Nashik Municipal Corporation...6.1.1 Tapovan Zone 6-3 6.1.2 Agar Takali Zone 6-9 6.1.3 Chehadi Zone...

Master Plan for Sewerage System (FINAL)

MWH India Private Limited 168, Udyog Bhavan Sonawala Road, Goregaon (East) Mumbai – 400 063. Tel : +91-22- 2686 7165 / 2686 1963 Fax : +91-22- 2686 7133

November 2009

Nashik Municipal Corporation Underground Sewerage Department

TABLE OF CONTENTS

Underground Sewerage System for Nashik City under JNNURM Master Plan Report – Final

i

Table of Contents

Executive Summary

1 INTRODUCTION 1-1 1.1 Background 1-1

1.2 Scope of Work 1-2

1.3 About this Report 1-2

1.4 About JNNURM Mission 1-3

1.4.1 The Mission 1-3

1.4.2 Objectives of the Mission 1-3

1.4.3 Scope of the Mission 1-3

1.5 Nashik City 1-4

1.5.1 Geographical Location and Topography 1-5

1.5.2 National and Regional Setting 1-5

1.5.3 Climatic Conditions 1-5

2 CITY PLANNING AND POPULATION 2-1 2.1 Introduction – City Development Plan 2-1

2.2 Understanding the Past and Existing Population 2-1

2.3 Population Growth Projections 2-3

2.4 Ward Wise Population 2-5

3 EXISTING SITUATION AND ANALYSIS 3-1 3.1 EXISTING SEWERAGE SYSTEM 3-2

3.1.1 Sewage Generation 3-3

3.2 Sewer Zones 3-3

3.2.1 Tapovan Sewerage Zone 3-5

3.2.2 Agar Takali Sewerage Zone 3-10

3.2.3 Chehadi Sewerage Zone 3-13

3.2.4 Panchak Sewerage Zone 3-14

3.2.5 Kamathwada Sewerage Zone: 3-15

3.2.6 Pimpalgaon Khamb Zone 3-16

3.2.7 Gangapur Sewerage Zone: 3-17

3.3 PUMPING STATIONS 3-17

3.4 Sewage Treatment Plants 3-20

3.4.1 STP at Tapovan 3-21

3.4.2 STP at Chehadi 3-24

3.4.3 STP at Panchak 3-25

4 DESIGN BASIS AND CRITERIA 4-1 4.1 Water Demand 4-1

4.2 Estimation of Sewage Flow 4-1

4.2.1 Design Period 4-1

4.2.2 Population Forecast 4-2

4.2.3 Flow Assumptions 4-2

4.2.4 Infiltration 4-2

4.2.5 Year Wise Sewage Flow 4-2

4.3 Peak Factors 4-3

4.4 Hydraulics of Sewers 4-3

4.4.1 Flow - Friction Formulae 4-3

4.4.2 Depth of Flow 4-4

4.4.3 Velocities 4-4

4.4.4 Sizing of Pipes and Slopes 4-5


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4.4.5 Minimum Depth of Cover 4-5

4.4.6 Maximum Depth of Sewer 4-5 4.5 Sewer Appurtenances 4-5

4.5.1 Manholes 4-5

4.5.2 Scraper Manholes 4-6

4.5.3 Drop Arrangement 4-6

4.5.4 Receiving Manhole at Pressure line Discharge 4-6

4.5.5 Pipe Selection 4-6

4.5.6 Structural Design of Buried Sewers 4-7

4.5.7 Type of Bedding 4-10

4.6 Rising Main 4-10

4.7 Sewage Pumping Stations 4-11

4.7.1 Design Year 4-11

4.7.2 Minimum Wet Well Capacity 4-11

4.7.3 Selection of Pumps 4-11

4.8 Sewage Treatment Plants 4-12

4.8.1 STP Capacities 4-12

4.8.2 Sewage Characteristics 4-12

4.8.3 Design years for STP 4-12

4.8.4 Selection of Treatment Scheme 4-13

4.8.5 Design criteria UASB followed by Aerobic Treatment 4-14

4.8.6 Design criteria for Activated Sludge Process 4-15

4.8.7 Design Criteria for Extended Aeration 4-16

4.8.8 Design Criteria for Sequential Batch Reactor 4-17

5 MASTER PLAN PROPOSAL FOR SEWERAGE NETWORK 5-1 5.1 Tapovan Sewerage Zone 5-4

5.1.1 Tapovan sewerage Zone 5-4

5.1.2 Makhamalabad sewerage Zone 5-8

5.2 Agar Takali Sewerage Zone 5-9

5.2.1 Nasardi Sub Sewerage Zone 5-9

5.2.2 Takali Sub Sewerage Zone: 5-12

5.3 Chehadi Sewerage Zone: 5-14

5.3.1 Vihitgaon Sub Sewerage Zone 5-15

5.3.2 Chadhegaon Sub Sewerage Zone 5-16

5.4 Panchak Sewerage Zone 5-17

5.4.1 Dasak Panchak Sub Sewerage Zone 5-17

5.4.2 Panchak Sub Sewerage Zone: 5-18 5.5 Kamathwada Sewerage Zone 5-19

5.6 Pimpalgaon Khamb Zone 5-20

5.7 Gangapur Sewerage Zone 5-21

5.7.1 Gangapur sub sewerage zone 5-22

5.7.2 Chikhali Nalla sub sewerage zone 5-22

5.8 Summary of sewerage network: 5-23

6 MASTER PLAN PROPOSAL FOR PUMPING STATIONS AND SEWAGE

TREATMENT PLANTS 6-1 6.1 Master Plan Proposal for Pumping Stations 6-2

6.1.1 Tapovan Zone 6-3

6.1.2 Agar Takali Zone 6-9

6.1.3 Chehadi Zone 6-11

6.1.4 Panchak Zone 6-13


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6.1.5 Kamathwada Zone 6-16

6.1.6 Pimpalgaon Khamb Zone 6-16 6.1.7 Gangapur Zone 6-17

6.1.8 Summary of Pumping Stations 6-18

6.2 Master Plan Proposal for Sewage Treatment Plants 6-20

6.2.1 Existing STPs 6-21

6.2.2 Proposed STPs 6-22

7 OPERATION AND MAINTENANCE ASPECTS 7-1 7.1 General 7-1

7.1.1 Types of Maintenance 7-1

7.2 O & M of Sewers 7-1

7.2.1 Sewer Cleaning Options 7-2

7.2.2 Sewer Cleaning Programme 7-4

7.2.3 Capital Cost of Sewer Maintenance 7-8

7.2.4 Operating Cost of Sewer Maintenance 7-9

7.3 O & M of Sewage Pumping Stations 7-10

7.3.1 Maintenance of Pumps 7-10

7.4 O & M of Sewage Treatment Plants 7-16

7.5 O & M Cost 7-18

8 BLOCK COST ESTIMATES 8-1 8.1 Abstract of Capital Cost 8-1

8.2 Block Cost for Sewerage Network 8-2

8.3 Block Cost for Pumping Stations 8-2

8.4 Block Cost for Pumping Stations 8-3

EXECUTIVE SUMMARY

Underground Sewerage System for Nashik City under JNNURM Master Plan Report

1

Executive Summary

Introduction

Nashik, an ancient historical city, is one of the important cities in the state of Maharashtra and an

important pilgrim centre in India. The city also governs business importance due to the regional

linkage. Nashik is situated on the transportation network runs between the nations political and

business capital. It is also connected to other major cities of Maharashtra, such as Mumbai, Pune,

Aurangabad, etc. by an excellent road network. City has immense potential for industrial,

commercial and urban development.

Nashik has grown on both sides of River Godavari. Ramkund is one of the holiest places in India

and pilgrims carry out religious activities through out the year. Kumbh mela is the most religious

function held after every 12 years at Nashik.

Nashik Municipal Corporation area is located between 190-55’ and 200-05’ North Latitude and

730-42’ and 73

0-55’ East longitude. It is situated on the Eastern slopes of the North-South

Sahyadri Ranges at 565 metres above MSL. The Nashik Town lies on both sides of the Godavari.

Old Nashik is situated on the low lying bank of Godavari. Around 259 sq. km. (25,900 Ha) of

land is under the control of Nashik Municipal Corporation. This 259 sq.km land has been divided

in to 108 wards in order to ensure effective and efficient administration.

Nashik Municipal Corporation (NMC) is making sustained efforts since its inception from 1982

to develop the infrastructure facilities, which catalyses the development process of the city as a

whole. In the development process, sewerage is the critical and most important part of the

infrastructure which has been given prime focus by NMC.

M/s. MWH India Pvt. Ltd (MWH), Mumbai, is appointed by NMC to prepare Master Plan for

underground sewerage scheme under Jawaharlal Nehru National Urban Renewal Mission

(JNNRUM). The consultancy assignment includes for preparation of master plan for sewerage

scheme for entire Nashik City including sewerage network, raw sewage pumping stations and

sewage treatment plants.


2

Scope of Work

The Master Plan excluding MIDC area is to be prepared with respect to projected requirement for

the year 2041 considering Nashik city as whole.

1. Deciding distribution of projected population for various areas under project for year 2026 &

2041.

2. Analysing existing sewer network as well as sewer network under execution as per Phase 1

and Phase 2 projects for condition and capacity and identifying augmentation requirements

for year 2041 requirement.

3. Examining with integrated approach for city as a whole, options of conveyance and treatment

to decide optimal and workable proposals.

4. Analysing condition and capacity of existing pumping station civil structures and

conceptualizing proposals for suitable additions w.r.t. year 2041 requirement.

5. Analysing condition and capacity of existing pumping machineries, rising mains & STP and


Population Projection

Population changes in the city occur in three ways: (a) by birth, (b) by deaths and (c) by

migration of people to and from other areas. Owing to the better residential and employment

opportunities available in the cities, there is a net gain in the population of any growing urban

area from migration of people from adjacent rural areas. Depending on many factors, the growth

of a city exhibits a certain pattern in population gain over a period of time. If similar situation is

likely to prevail in future, then population forecasting can be made by suitably extrapolating the

past population growth trends with various statistical methods. This is the basic assumption of

any population projection.

The population of Nashik has recorded the highest growth rate between the years 1941-51. The

growth rate during this decade was about 85%. This high growth rate was basically due to the

partition of India at that time. The population growth started rising steadily after 1961 and

Nashik recorded more than the average growth rate for India for the last two decades. The growth

rate of 63% was recorded for the year 1971-1981 which also continued for the 1981-1991

decade. In the year 2001 Nashik became a city of million plus population. The average decadal


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increase for Nashik has been higher as compared to the National growth rate (21.3%), which is

attributed mainly to the rapid urbanisation of the city.

Nashik is a growing town and has vast scope for expansion. The population within Nashik

Municipal Corporation limit area has increased from 1,48,573 in the year of 1951 to 10,77,236 in

2001. The population as per the Census record is as given below. On an average the growth rate

in the city has been of the order of 49.06%.

The growth trends for the past five decades for Nashik city is presented in the table below:

Census Year Population of

Nashik City in

lakhs

1951 1.49

1961 2.01

1971 2.74

1981 4.32

1991 6.57

2001 10.77

The population for 2011 has been forecasted by the Straight Line method as stipulated in the

CPHEEO guidelines. The population for the years 2021, 2031 and 2041have been calculated by

the Graphical Method. The Population figures stated in the table below have been adopted for

design purposes.

Year Population Decadal Growth%

1971 2,74,482 -

1981 4,32,044 57.40

1991 6,56,925 52.05

2001 10,77,236 63.98

2011 17,50,000 62.00

2021 25,96,278 48.50

2031 37,50,000 44.25

2041 48,50,000 29.33


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Existing Situation

There are six (6) existing sewage pumping stations which are as Old Ganeshwadi, New

Ganeshwadi, Takali, Kapila, Chehadi and Panchak Pumping presented in the following table.

Sr. Name of Pumping

Station

No. of

Pumps

Capacity Diameter

of Rising

main in

mm

Length of

Rising

main in

km.

1 Old Ganeshwadi (3 + 1) 17.33 MLD, 160 HP

700

2.7 (1 + 1) 10 MLD, 80 HP

2 New Ganeshwadi (2 + 1) 45 MLD, 400 HP

800

2.5 (1 + 1) 22.5 MLD, 160 HP

3 Takali (2 + 1) 21 MLD, 80 HP

700

2.0 (1 + 1) 10.5 MLD, 30 HP

4 Kapila (2 + 1) 7.5 MLD, 50 HP

350

0.5 (1 + 1) 3.75 MLD, 25 HP

5 Chehadi 5 nos. 19.5 MLD, 120 HP 700 0.5

6 Panchak (2 + 1) 7.5 MLD, 40 HP 300 0.5


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The following pumping stations are proposed to be constructed under Package-1 of JNNURM

sewerage project.

Sr. No. Name of Pumping Station Average capacity in MLD

1 New Kapila 52.00

2 Nandur Dasak 36.50

3 Agar Takali 210.00

Existing Sewage Treatment Plant

There are three existing sewage treatment plants in Nashik City. The details of the treatment

plants are as follows:

Sr. No Location Average Capacity

(MLD)

Treatment Process scheme

1 Tapovan 78.00 UASB followed by Facultative Aerated Lagoon

2 Chehadi 22.00 UASB followed by Facultative Aerated Lagoon

3 Panchak 7.50 Activated sludge process

In addition to the above STP’s, there are three more existing STPs namely Bhujbal Farm,

Morwadi and Untwadi in CIDCO area of Nashik. These STPs are very old and need major

renovation. Thickly populated residential areas also surround the above STP’s. The residents

staying around the treatment plant complain of bad odour most of the time. This makes it very

difficult for them to stay around the STPs. Hence it is proposed to discard these small STP’s and

divert the flow of CIDCO area to Agar Takali sewerage zone by gravity sewer network.

There are four STPs which are under construction.

Sr.

No.

Location Average Capacity

(MLD)

Treatment Process scheme

1 Agar Takali 70.00 Activated Sludge Process


3 Chehadi 20.00 Activated Sludge Process

4 Panchak 21.00 Activated Sludge Process


6

Design Years

for Master Plan : 2041 (Ultimate Design year)

for sewerage system : 2041

for Pumping station (Civil) : 2041

for Pumping station (E & M) : 2026

for Sewage Treatment Plant : 2026

(Civil, E&M)

Total Water Demand

Year Population Population

in slums

water

requirement

for

population

connected

at 150 lpcd

Water for

slums at

40 lpcd

Institutional

Demand

Fire

Demand

Floating

Population

Demand

Total

water

demand

at

Consumer

end

system

losses

at

15%

Total

water

Demand

Say

lakhs lakhs MLD MLD MLD MLD MLD MLD MLD MLD MLD

2006 13.50 1.6 178.50 6.40 24.00 4.00 4.00 216.90 32.54 249.44 250

2011 17.50 0.8 250.50 3.20 31.00 5.00 5.00 294.70 44.21 338.91 339

2016 21.45 0.5 314.25 2.00 35.00 5.75 5.75 362.75 54.41 417.16 418

2021 26.00 0.3 385.50 1.20 40.00 5.75 5.75 438.20 65.73 503.93 504

2026 31.75 0.3 471.75 1.20 44.00 6.00 6.00 528.95 79.34 608.29 609

2031 37.50 0.3 558.00 1.20 48.00 6.00 6.00 619.20 92.88 712.08 713

2041 48.50 0.3 723.00 1.20 62.00 6.00 6.50 798.70 119.81 918.51 919

Total Sewage Generation

Year Water

requirement

for population

connected at

150 lpcd

Water for

slums at 40

lpcd

Institutional

Demand

Floating

Population

Demand

Total water

demand at

Consumer

end

Sewage

generation

(80% of

the water

supply)

Total

sewage

with 5%

infiltration

2006 178.50 6.40 24.00 4.00 212.90 170.32 178.84

2011 250.50 3.20 31.00 5.00 289.70 231.76 243.35

2016 314.25 2.00 35.00 5.75 357.00 285.60 299.88

2021 385.50 1.20 40.00 5.75 432.45 345.96 363.26

2026 471.75 1.20 44.00 6.00 522.95 418.36 439.28

2031 558.00 1.20 48.00 6.00 613.20 490.56 515.09

2041 723.00 1.20 62.00 6.50 792.70 634.16 665.87

Proposed Pumping Stations

The following pumping stations are proposed to be constructed under Package-2 of JNNURM

sewerage project.


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1. Flow from Gangapur road pumping station is to be discharged into Makhamalabad relief

sewer till 2021.

2. Untwadi pumping station flow discharging into Takali relief sewer until year 2021.

Sr. No. Location Corresponding

STP

Average Capacity for (MLD)

Civil work

(Year

2041)

E & M work

Package-

1

E & M work

Package-

2

Add E & M work

(Year

2041)

Tapovan Zone

1 New Kapila Tapovan 52.00 30.00 - 48.00

Makhamalabad Zone

2 Gangapur Road Makhamalabad 25.00 - 17.00 8.00

3 Mate Nursery Makhamalabad 3.00 3.00 - -

4 Makhamalabad

STP

Makhamalabad 14.00* - - -

5 Makhamalabad

Nallah

Makhamalabad 8.00* - - -

Agar Takali Zone

6 Agar Takali Agar Takali 70.00 70.00 - 67.00

7 Nasardi Sangam Agar Takali 40.00 - 30.00 10.00

8 Bhadrakali Agar Takali 14.00 - 10.00 4.00

Chehadi Zone

9 Chehadi Chehadi 52.00 32.00 - 38.00

10 Chadhegaon Chehadi 3.00 3.00 - -

Panchak Zone

11 Dasak Panchak Panchak 36.50 23.00 - 18.50

12 Manur Panchak 55.00 30.00 - 25.00

Kamathwada Zone

13 Untwadi Kamathwada 28.00 - 28.00 Nil

14 Kamathwada Kamathwada 28.00 - - 28.00

Pimpalgaon Khamb Zone

15 Pimpalgaon

Khamb

Pimpalgaon

Khamb

55.00+ - - 55.00

Gangapur Zone

16 Chikhali Nalla Makhamalabad 25.00 - 13.00 12.00

17 Gangapur Gangapur 4.50 - 4.50 Nil


8

* These sewage pumping stations will be taken for construction in the year 2021 AD.

+ This sewage pumping station is pending as land acquisition is in process by NMC.

Sewage Treatment Plants

The following sewage treatment plants are proposed to be constructed under JNNURM sewerage

project.

Sr.

No.

Location Average Capacity (MLD)

Existing Under

construction

Package-1

Upto

year

2026

Packa

ge-2

Upto

year

2041

Total Land

requirement

for Packages

1&2

(Ha)

1 Tapovan 78.00 52.00 0.00 9.00 139.00 NMC land

2 Makhamalabad 0.00 0.00 27.00* 18.00 45.00 7.00

4 Agar Takali 0.00 70.00 40.00 67.00 177.00 NMC land

5 Chehadi 22.00 20.00 0.00 28.00 70.00 NMC land

6 Panchak 7.50 21.00 32.00 43.00 103.50 NMC land

7 Kamathwada 0.00 0.00 36.00* 18.00 54.00 6.50

8 Pimpalgaon

Khamb

0.00 0.00 32.00+ 22.50 54.50 8.00

9 Gangapur 0.00 0.00 18.00 10.50 28.50 3.50

Total 107.50 163.00 185.00 216.00 671.50

* These plants will be taken for construction in the year 2021 AD.

+ This plant is pending as land acquisition is in process. Land is presently not in possession of

NMC.

Proposed Treatment Schemes

The selection of a particular type of treatment depends upon the techno-economic feasibility of

the process selected for the treatment. The techno-economic feasibility can be attributed to the

following parameters:

• Simple to construct and operate,

• Ability to handle strong sewage within short detention time,

• Minimum capital and operation cost,

• Possibility of cost recovery,

• Minimum land requirement,


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• Ability to treat upto the prescribed discharge standards,

• Minimum odour, flies and other nuisance, and

• General acceptance to the people in the vicinity of the STP.

There are many treatment processes available however due to constraints of land available only

following treatment technologies are considered for techno-commercial evaluation for all

proposed STPs.

1. Option 1: UASB followed by Aerobic Treatment (UASB + Aerobic treatment)

2. Option 2: Activated Sludge Process (ASP)

3. Option 3: Extended Aeration (EA)

4. Option 4: Sequential Batch Reactor (SBR)

Block Cost Estimates

It is quite understandable, exact costing of all components such as sewerage network, pumping

station and treatment plants would depend upon detailed process design, hydraulics, survey,

design parameters, etc. However in order to give NMC an indication on the financial aspects

under master plan report, the block cost estimates based on the prevailing market rates and

experience of the consultants is given below. The reader should bear in mind that variations are

possible in this cost.

While working on block cost estimates, design year for sewer network is considered as 2041, for

pumping stations it is 2041 (E & M for 2026) and for sewage treatment plants it is 2026.

Sr. No. Components Capital Cost

(Rs. in Crores)

1 Sewerage Network 171.22

2 Sewage Pumping Stations 72.15

3 Sewage Treatment Plants 132.65

Total 376.02

Contingencies (3%) 11.28

Total 387.30

The above cost does not include the cost for operation and maintenance (O & M). The annual

O & M cost will be worked in the Detailed Project Report based on detailed engineering.

CHAPTER 1 :

INTRODUCTION


1-1

1 INTRODUCTION

1.1 BACKGROUND

Nashik Municipal Corporation (NMC) is making sustained efforts since its inception from 1982

to develop the infrastructure facilities, which catalyses the development process of the city as a

whole. In the development process, sewerage is the critical and most important part of the

infrastructure which has been given prime focus by NMC.

NMC has developed a two phase sewerage project, Phase I and Phase II, to provide full-fledged

sewerage facility. The Detailed Project Report (DPR) for Phase I have been prepared by M/s.

WAPCOS, New Delhi. The part of the sewerage project under Phase I with an estimated cost of

Rs.158.38 crores is nearing to completion.

M/s. CES, Mumbai prepared the DPR under Godavari Action Plan for the Phase II in the year

2000. The project area covers the part of city not included in Phase I. The project area under

Phase II is divided in six zones and 14 villages. Sewerage system under Phase II is designed for

the year 2031. The estimated cost of this phase is Rs. 132.45 crores.

M/s. MWH India Pvt. Ltd (MWH), Mumbai, was appointed by NMC as consultants for detailed

engineering, tender documentation, evaluation of bid and providing engineering support to NMC

during execution for the remaining works under Phase I and the works proposed under Phase II.

The consultancy assignment was limited majority for execution of existing and proposed

pumping stations, rising mains and for sewage treatment plants.

M/s. MWH is again appointed by NMC to prepare Master Plan for underground sewerage

scheme under Jawaharlal Nehru National Urban Renewal Mission (JNNRUM). The consultancy

assignment includes for preparation of master plan for sewerage scheme for entire Nashik City

including sewerage network, raw sewage pumping stations and sewage treatment plants.


1-2

1.2 SCOPE OF WORK

The Master Plan excluding MIDC area is to be prepared with respect to projected requirement for

the year 2031 considering Nashik city in totality. Subsequently NMC changed the design year to

year 2041. The scope of design services includes:

1. Deciding distribution of projected population for various areas under project for year 2021 &

2041.

2. Analysing existing sewer network as well as sewer network under execution as per Phase 1

and Phase 2 projects for condition and capacity and identifying augmentation requirements

for year 2041 requirement.

3. Examining freshly, with integrated approach for city as a whole, options of conveyance &

treatment to decide optimal and workable proposals.

4. Analysing condition and capacity of existing pumping station civil structures &


5. Analysing condition and capacity of existing pumping machineries, rising mains & STP and


6. Delineating the components of works to be covered under scope of various DPRs.

1.3 ABOUT THIS REPORT

Master Plan is prepared for entire Nashik City. Based on the existing water supply and sewerage

system, population projection sewerage master plan is to be prepared.

The Master Plan includes following chapters.

Chapter 1: Introduction

Chapter 2: City Planning and Population

Chapter 3: Existing Situation and Analysis

Chapter 4: Design Basis and Criteria

Chapter 5: Master Plan Proposal for Sewerage Network

Chapter 6: Master Plan Proposal for SPS and SPT

Chapter 7: O & M Aspects

Chapter 8: Block Cost Estimates

Chapter 9: Institution and Financial aspect for Master Plan


1-3

1.4 ABOUT JNNURM MISSION

1.4.1 The Mission

Mission Statement: The aim is to encourage reforms and fast track planned development of

identified cities. Focus is to be on efficiency in urban infrastructure and service delivery

mechanisms, community participation, and accountability of ULBs / Parastatal agencies towards

citizens.

1.4.2 Objectives of the Mission

1. The objectives of the JNNURM are to ensure that the following are achieved in the urban

sector;

2. Focussed attention to integrated development of infrastructure services in cities covered

under the Mission;

3. Establishment of linkages between asset-creation and asset-management through a slew of

reforms for long-term project sustainability;

4. Ensuring adequate funds to meet the deficiencies in urban infrastructural services;

5. Planned development of identified cities including peri-urban areas, outgrowths and urban

corridors leading to dispersed urbanisation;

6. Scale-up delivery of civic amenities and provision of utilities with emphasis on universal

access to the urban poor;

7. Special focus on urban renewal programme for the old city areas to reduce congestion; and

8. Provision of basic services to the urban poor including security of tenure at affordable prices,

improved housing, water supply and sanitation, and ensuring delivery of other existing

universal services of the government for education, health and social security.

1.4.3 Scope of the Mission

The mission comprises of two sub-missions, namely:

1. Sub-Mission for Urban Infrastructure and Governance:

This will be administered by the Ministry of Urban Development through the Sub- Mission

Directorate for Urban Infrastructure and Governance. The main thrust of the Sub-Mission

will be on infrastructure projects relating to water supply and sanitation, sewerage, solid

waste management, road network, urban transport and redevelopment of old city areas with a


1-4

view to upgrading infrastructure therein, shifting industrial and commercial establishments to

conforming areas, etc.

2. Sub-Mission for Basic Services to the Urban Poor:

This will be administered by the Ministry of Urban Employment and Poverty Alleviation

through the Sub-Mission Directorate for Basic Services to the Urban Poor. The main thrust

of the Sub-Mission will be on integrated development of slums through projects for

providing shelter, basic services and other related civic amenities with a view to providing

utilities to the urban poor.

1.5 NASHIK CITY

Nashik, an ancient historical city, is one of the important cities in the state of Maharashtra

renowned for pilgrimage. The city also governs business importance due to the regional linkage.

Nashik is situated on the transportation network runs between the nations political and business

capital. It is also connected to other major cities of Maharashtra, such as Mumbai, Pune,

Aurangabad etc by an excellent road network. City has immense potential for industrial,

commercial and urban development.

Nashik is an important pilgrim centre in India. It has grown on both sides of River Godavari.

Ramkund is one of the holiest places in India and pilgrims carry out religious activities through

out the year. Kumbh mela is the most religious function held after every 12 years at Nashik.

The erstwhile Nashik Municipal Council was established in May 1864. In 1965 it was upgraded

to an “A” class Municipal Council. Nashik Municipal Corporation was established in the year

1982. The Corporation limit includes area of three erstwhile municipal councils (Nashik

Municipal Council, Nashik Road Deolali Municipal Council, Satpur Municipal Council) and

surrounding 19 villages.

Around 259 sq. km. (25,900 Ha) of land is under the control of Nashik Municipal Corporation.

This 259 sq.km land has been divided in to 108 wards in order to ensure effective and efficient

administration.


1-5

1.5.1 Geographical Location and Topography

Nashik Municipal Corporation area is located between 190-55

’ and 20

0-05

’ North Latitude and

730-42’ and 73

0-55’ East longitude. It is situated on the Eastern slopes of the North-South

Sahyadri Ranges at 565 metres above MSL. The Nashik Town lies on both sides of the Godavari.

Old Nashik is situated on the low lying bank of Godavari.

All new developments are however on higher grounds. The river Darna forms the South-Eastern

boundary of the Corporation area to which its tributary Waldevi meets near Chehedi. The river

Nasardi flows through the corporation area from west to east and joins Godavari near Takali.

1.5.2 National and Regional Setting

Nashik is the Divisional headquarters of the newly constituted Nashik Administrative Division.

The city is located on the Delhi Broad Gauge Railway Line on the Bombay - Bhusawal section.

Bombay-Agra National Highway No.3 passes through the city. National Highway No.50

between Nashik and Pune connects the city to important Towns/Districts of Maharashtra. There

are several other roads connecting Nashik with other important towns of Maharashtra and other

states, Jalgaon district is located to the East and North-East of Nashik. On the West is Dang

District of Gujarat while on the North is Dhule District. Ahmednagar is to the south. Thane

district to the South West and West and Aurangabad district to the South-East.

There are two airstrips near Nashik, one at H.A.L. Ozhar and the other opposite Upnagar. The

Upnagar airstrip is with the Civil Aviation Department and is in use at present.

1.5.3 Climatic Conditions

The monthly maximum temperature reported to have been recorded in May 1984 was 38.50C and

monthly average minimum temperature recorded in Jan ‘1984 was 9.50C. The weather is cold

from December to February and is hot / dry from March to May. Rainy / monsoon season from

June to September is due to South - West Monsoon. The weather is fair after the rainy season i.e.

in October and November. In general climate of Nashik is dry and conducive to health.

The average rainfall is about 700 mm falling in about 50 rainy days in year. Relative humidity is

maximum 62% and minimum 43.65 %.

CHAPTER 2 :

CITY PLANNING AND

POPULATION


2-1

2 CITY PLANNING AND POPULATION

2.1 INTRODUCTION – CITY DEVELOPMENT PLAN

The City Development Plan (CDP) for Nashik city has been prepared by the Nashik Municipal

Corporation in an articulate manner. The plan horizon considered is for a period of 25 years viz.

2006 to 2041. The CDP has assessed and discussed the current situation of the city. It focuses on

the major issues related to city development and also speaks about the City’s Vision and strategy

options for identifying specific projects and their implementation in the appropriate manner.

The major thrust areas covered in the CDP are infrastructure projects relating to water supply,

sanitation, sewerage, solid waste management, road network, urban transport, redevelopment of

old city areas etc.

2.2 UNDERSTANDING THE PAST AND EXISTING POPULATION

The population of Nashik has recorded the highest growth rate between 1941 - 51. The Growth

rate during this decade was about 85%. This growth rate was basically due to the partition of

India at that time. The population growth started rising steadily after 1961 and Nashik recorded

more than the average growth rate for India for the last two decades. The growth rate of 63% was

recorded for the year 1971-1981 which also continued for the 1981-1991 decade. Nashik became

a million plus city in the year 2001. The average decadal increase for Nashik has been higher

than the National growth rate (21.3%), which is attributed mainly to the rapid urbanisation of the

city.

The Growth trends for the past 5 decades for Nashik city is given in the table below:

Table 2.1: Growth Trends for Nashik in the past 5 decades

Census Year Population of

Nashik City in

lakhs

1951 1.49

1961 2.01

1971 2.74

1981 4.32

1991 6.57

2001 10.77 Source: CDP of NMC under JNNURM


2-2

Fig 2.1 : Comparison of Growth Trends of Nashik City for the past 5 decades

Nashik is a growing town and has vast scope for expansion. The population of Nashik Municipal

Corporation limit area increased from 1,48,573 in the year of 1951 to 10,77,236 in 2001. The

population as per the Census record is given in Table 2.1. On an average, the growth rate in the

city has been of the order of 49.06%.

Figure 2.2 : Map of Nashik District

1.49 2.01

2.74

4.32

6.57

10.77

-

2.00

4.00

6.00

8.00

10.00

12.00

1951 1961 1971 1981 1991 2001

Population in Lakhs

Year

Population


2-3

Table 2.2 : Population as per Census record

Decadal Year Population

1951 1,48,573

1961 2,00,814

1971 2,74,482

1981 4,32,044

1991 6,56,925

2001 10,77,236

Source : Census, Government of India

Figure 2.3 : Graphical Representation of Population Vs. Decadal Year as per Census

record

2.3 POPULATION GROWTH PROJECTIONS

For every city, planning in anticipation of future population is much necessary. Parameters of

infrastructure are directly or indirectly dependent on the population. Number of indicators are

related to the population. Demand assessment of the population can indicate the facilities that are

existing and those that are to be created. Money and manpower inputs are decided on the future

population.

As the decisions of importance are to be taken by the management based on the analysis of the

population growth. Anticipated population at various stages of the development is very important

0

200000

400000

600000

800000

1000000

1200000

1951 1961 1971 1981 1991

Population

Population


2-4

parameter to decide the dimension of the developing infrastructure. It is very interesting

phenomenon that demand always supersedes the provisions till the saturation stage is achieved.

Apart from the increase in the existing population in natural way migrants are attracted to the city

because of better living. Industries and commerce also gets larger inputs in the better-managed

city. Hence, for the developing city infrastructure should be planned on higher side.

The population for 2011 has been forecasted by the Straight Line method as stipulated in the

CPHEEO guidelines. The population for the years 2021 and 2031 have been calculated by the

Graphical Method. The population figures stated in the table below have been adopted for design

purposes.

Table 2.3 : Projected Population Vs Decadal Year

Year Population Decadal Growth%

1971 2,74,482 -

1981 4,32,044 57.40

1991 6,56,925 52.05

2001 10,77,236 63.98

2011 17,40,413 61.56

2021 25,96,278 49.18

2031 37,50,000 44.25

2041 48,50,000 29.33

Source: Water Supply Master Plan

Figure 2.4: Graphical Representation of Projected Population Vs. Decadal Year as per CDP


2-5

2.4 WARD WISE POPULTAION

The total city population for each key year is divided into 108 wards based on the growth rate of

each ward. Growth rate was finalised based on development and developable area of each ward.

The summary of the ward wise population for the key years is as follows,

Table 2.4: Ward wise Population for Key Years

Ward

No

Area Developable

area

2001 2026 2041

(Ha) (Ha)

1 1647.92 1383.9 9,775 1,27,306 2,14,231

2 147.67 130.44 10,196 26,088 39,132

3 1603.14 1480.62 9,101 84,383 1,71,271

4 2612.99 2183.45 9,314 1,77,241 3,25,667

5 431.2 376.11 9,977 75,222 1,12,833

6 242.5 155.86 10,824 31,172 46,758

7 732.04 697.39 10,101 75,712 1,28,128

8 59.06 55.21 9,843 16,563 22,084

9 12.46 10.3 9,106 10,017 12,048

10 9.09 9.09 9,306 10,237 11,260

11 117.26 56.8 9,737 17,040 22,720

12 230.23 159.23 9,277 30,591 61,516

13 1474.65 1335.18 9,342 1,16,308 2,09,426

14 502.92 466.47 9,468 41,168 73,914

15 49.26 31.97 9,468 10,731 13,928

16 17.27 11.5 9,504 10,454 11,500

17 26.29 22.32 9,582 16,794 19,026

18 29.11 21.02 10,340 12,773 14,192

19 31.03 30.53 9,183 12,801 15,854

20 24.74 24.74 10,749 12,370 13,607

21 569.31 569.31 10,755 41,951 79,705

22 119.77 75.54 9,461 22,662 30,216

23 124.92 108.76 10,444 32,628 43,504

24 212.55 188.99 10,209 21,961 36,433

25 498 418.2 9,192 64,216 1,00,500

26 105.7 92.8 10,337 27,840 37,120

27 89.43 46.45 9,259 18,413 23,062

28 18.55 17.87 10,399 16,083 17,870

29 14.36 13.66 10,365 12,294 13,660

30 53.85 37.47 10,729 24,651 28,398

31 189.04 107.18 9,772 32,154 42,872


2-6

Ward

No

Area Developable

area

2001 2026 2041

32 228.9 186.55 9,724 25,291 40,627

33 240.98 172.87 10,588 25,136 39,752

34 159.14 138.3 10,533 20,320 42,384

35 27 26.24 9,035 10,496 11,808

36 95.08 75.74 9,123 22,722 30,296

37 93.2 92.79 10,567 17,572 26,440

38 95.77 79.82 10,276 23,946 31,928

39 111.12 90.01 9,712 27,003 36,004

40 166.5 142.75 9,329 42,825 57,100

41 16.84 14.45 10,308 11,346 12,467

42 10.17 10.17 10,390 11,429 12,572

43 12.11 11.49 9,902 10,892 11,981

44 51.3 38.36 9,538 18,066 21,790

45 51.53 31.06 10,298 15,462 18,568

46 77.14 47.74 9,603 14,322 19,096

47 73.17 56.37 10,783 22,857 28,494

48 173.68 64.3 10,695 19,290 25,720

49 240.3 50.02 10,266 13,724 18,674

50 435.56 43.35 9,391 13,005 17,340

51 492.44 400.37 10,647 63,061 1,01,964

52 504.97 468.89 10,265 32,112 62,556

53 72.43 68.9 10,140 18,263 25,056

54 30.89 30.05 9,371 12,020 13,523

55 36.71 10.66 9,423 10,362 11,406

56 79.77 67.46 9,524 18,309 22,228

57 127.05 96.36 9,450 28,908 38,544

58 122.13 89.57 9,884 26,871 35,828

59 77.93 43.89 10,146 13,167 17,556

60 18.39 17.46 10,032 11,101 12,216

61 10.79 10.79 10,784 11,865 13,035

62 67.29 51.906 10,181 16,727 21,918

63 69.29 41.99 9,450 12,597 16,796

64 112.34 109.14 10,002 32,742 43,656

65 228.19 212.49 9,616 42,498 84,996

66 Military Area

67 66.31 56.41 10,032 16,923 22,564

68 43.49 41.29 9,364 12,387 16,516

69 314.1 134.21 10,731 17,648 27,451

70 763.34 610.02 10,287 41,480 80,909

71 280.5 247.01 10,153 31,902 55,436

72 132.81 64.12 10,516 19,236 25,648

73 73.74 45.33 10,732 13,599 18,132


2-7

Ward

No

Area Developable

area

2001 2026 2041

74 100.07 76.76 10,374 23,028 30,704

75 115.92 96.29 10,536 28,887 38,516

76 83.47 82.25 9,363 28,941 37,166

77 69.97 65.44 9,618 19,632 26,176

78 250.25 232.54 9,332 50,819 95,172

79 33.16 33.16 9,220 14,780 16,438

80 105.3 86.65 9,372 25,995 34,660

81 374.57 268.34 9,566 20,635 37,890

82 109.44 104.42 9,461 18,503 26,977

83 260.43 250.34 9,844 40,352 62,721

84 197.03 152.64 9,657 30,528 45,792

85 136.78 135.08 10,273 41,940 55,448

86 23.76 23.76 9,570 11,880 13,068

87 21.69 21.69 9,427 10,845 11,930

88 38.8 38.8 9,524 17,160 19,100

89 73.63 73.63 9,404 27,503 33,513

90 47.28 47.28 9,239 22,312 25,008

91 27.44 27.44 9,789 13,720 15,092

92 75.03 60.2 9,810 18,060 24,080

93 304.76 289.33 10,770 40,894 68,695

94 113.72 97.32 10,496 29,196 38,928

95 46.65 37.24 10,607 11,731 14,896

96 37.81 22.06 9,953 12,954 15,160

97 211.89 99.96 10,619 18,096 38,114

98 88.1 76.31 10,400 16,788 24,175

99 793.39 728.68 10,362 48,514 95,209

100 1329.55 945.47 10,942 103,655 174,411

101 1454.59 1110.58 10,308 150,098 256,355

102 45.92 45.92 9,623 22,960 25,256

103 27.52 27.52 9,531 13,760 15,136

104 17.48 17.48 10,174 11,187 12,323

105 19.6 19.6 9,376 10,310 11,368

106 23.44 23.44 9,471 11,720 12,892

107 69.32 69.42 10,259 34,710 38,181

108 1090.55 498.42 10,772 69,452 97,394

Total 25899.01 20594.52 10,62,948 31,70,851 48,51,355

Source: Water Supply Master Plan

CHAPTER 3 :

EXISTING SITUATION AND

ANALYSIS


3-1

3 EXISTING SITUATION AND ANALYSIS

The history of Nashik city sewerage system dates back to 1895, when a sewer from Tiwari Mahal

up to the river Godavari meeting just downstream of the ghats was laid. The diameter of the

sewer is 400-500mm. The old Nashik Town on the right bank of the river Godavari had a system

of brick /stone masonry drains covered with stone slabs, running along narrow streets for

conveying sullage and storm water to the river.

There are brick masonry sewers in the gaothan area of Nashik City existing since olden days.

These sewers collect the waste water from households as also the storm water run off. These old

sewers are joined to the piped sewerage system, which was created later. Due to the inadequate

capacity of these sewers, during monsoon, both the storm water and sewerage get mixed and

enters the river. There are some old sewers which are laid along the bank of the river Godavari.

These sewers are in a deteriorated condition and need to be examined thoroughly.

Nashik city, still recent times did not have an adequate sewerage system. The untreated sewage

was being let out in to River Godavari and its tributaries like Nasardi & Waldevi.

DEVELOPMENT OVER THE YEARS THROUGH VARIOUS PROJECTS

In 1991, a Consultant was appointed for framing the Detailed Project Report (DPR) for

Underground Sewerage Scheme, Phase I. The Phase I project was designed to cover thickly

populated core areas of Nashik city, Satpur, Nashik Road – Deolali & Dasak Panchak. The DPR

was sanctioned by NMC vide their General Body resolution.

During the same period, Government of India launched a programme and assured funding for the

projects for abatement of pollution in major rivers, hence some part of Phase I works costing

around Rs. 60 crores were transferred under the ‘Godavari Action Plan’.

Due to rapid urbanization it was found necessary to extend the comprehensive sewerage system

to the rapidly growing areas beyond the Phase I project area in all directions.

NMC, then appointed another Consultant to frame the DPR for Phase II for the year 2031. The

project area under Phase II is divided in to Six zones and 14 villages and covers approximately

3943 ha. The DPR was received by NMC in 2001.


3-2

Nashik Municipal Corporation has appointed M/s MWH as consultants to carry out detailed

engineering, tender documentation, evaluation of bids and providing post implementation support

for the remaining works under Phase I and the works proposed under Phase II. M/s MWH has

also been appointed by NMC to prepare the master plan of the underground sewerage scheme for

Nashik city under JNNURM.

3.1 EXISTING SEWERAGE SYSTEM

The topography of Nashik City, as per

Master Plan the city is divided into

seven sewerage zones.

There were 82 wards in the city till that

year. Currently, there are 108 wards

under NMC. Nashik City is divided in to

the following six divisions as per the

Nashik Municipal Corporation.

1. Nashik East Division

2. Nashik West Division

3. Panchavati Division

4. Nashik Road Division

5. CIDCO Division

6. Satpur Division

The total area of Nashik City is around 25900 Ha of which the residential area is 10240 Ha. The

sewerage facility is provided for approximately 5538 Ha.

Fig 3.1 : Nashik City Zonal Map


3-3

3.1.1 Sewage Generation

Considering the water demand as presented in Chapter 3, the total sewage flow for the key years

is as follows;

Table 3.1: Sewage Generation for the key years

Year Water

requirement

for population

connected at

150 lpcd

Water for

slums at 40

lpcd

Institutional

Demand

Floating

Population

Demand

Total

water

demand at

Consumer

end

Sewage

generation

(80% of

the water

supply)

Total

sewage with

5%

infiltration

2006 178.50 6.40 24.00 4.00 212.90 170.32 178.84

2011 250.50 3.20 31.00 5.00 289.70 231.76 243.35

2016 314.25 2.00 35.00 5.75 357.00 285.60 299.88

2021 385.50 1.20 40.00 5.75 432.45 345.96 363.26

2026 471.75 1.20 44.00 6.00 522.95 418.36 439.28

2031 558.00 1.20 48.00 6.00 613.20 490.56 515.09

2041 723.00 1.20 62.00 6.50 792.70 634.16 665.87

3.2 SEWER ZONES

There are three major rivers cutting across Nashik Municipal Corporation area which are running

from west to east. These rivers are Godavari, Nasardi and Waldevi Nasardi. The river Waldevi

runs on the southern outskirts of the city and finally joins the river Darna, which is a tributary of

the river Godavari near Chehadi beyond NMC limits.

The Project area is thus divided into three drainage basins namely Godavari, Nasardi and Waldevi

Nasardi. These drainage areas are further divided in to Seven (7) Sewerage Zones on the basis of

the topography and sewage flows.

The topography of Nashik City, as per Master Plan the city is divided into seven sewerage zones.

Out of these seven zones, four zones comprise of the core area of the city and the other three

zones comprise of fringe areas in the city as shown in the map below.


3-4

The Figure 3.2 shows the Sewerage Zones as per the Master Plan.

Fig 3.2 : Sewerage Zones as per Master Plan

GO

DA

VAR

I RIVER

GODAVARI

RIV

ER

KA

PI L

A

RIV

ER

WA

GH

AD

IR

IVE

R

NASARDI

RIVER

RIVERNASARDI

WALDEVI RIV

ER

WALD

EVI

RIVER

NH

-3

NH-3

NH-

3

NH

-3

SH-50

SH-50

TRIMB

AK RO

AD

TRIM

BAK

ROAD

DIN

DO

RI R

OA

D

TO

AG

RA

TO

PU

NE

TO M

UM

BAI

TO

TR

IMB

AK

ESH

WAR

TAKALI

ZONE

TAPOVAN

ZONE

PANCHAK

ZONE

CHEHEDI

ZONE

TO B

HU

SAW

AL

TO

MU

MB

AI

ZONE

STP & PS

GANGAPUR

GANGAPUR

CHADHEGAON

PS

VIHITGAON

CHEHADI

STP & PS

PS

STP & PS

PANCHACK

NANDUR DASAK

PS

MATE NURSARY

PS

NEW GANESHWADI

OLD GANESHWADI

PS

PS NEW KAPILAKAPILA

TAPOVAN

PS

STP

PS

MIDC

SATPUR

AMBAD

MIDC

KAMATHWADA

ZONE

KAMATHWADA

STP & PS

TAKALI

PS

AGAR TAKALI

STP & PS

ZONE

PIMPALGAONPIMPAL GAON KHAMB

STP & PS

The seven Sewerage Zones as per the Master Plan are as follows:

1. Tapovan Sewerage Zone

2. Agar Takali Sewerage Zone

3. Chehadi Sewerage Zone

4. Panchak Sewerage Zone

5. Kamathwada Zone

6. Pimpalgaon Khamb Zone

7. Gangapur Zone


3-5

3.2.1 Tapovan Sewerage Zone

The Tapovan Sewerage Zone consists of the Makamalabad Sub Sewerage Zone, Panchavati Sub

Sewerage Zone, Makhamalabad Relief Sewer, Godavari Right Bank Sub sewerage zone,

Godavari Right Bank Relief Sewer, Chikali Nalla Sub Sewerage Zone, Gangapur Road Sub

Sewerage Zone, Chopda Nalla Sub sewerage Zone.

Makhamalabad Sub Sewerage Zone: The existing length of the sewer in Makhamalabad Sub

Sewerage Zone is 86,664m and the diameter ranges from 200 to 700 mm. The sewage is pumped

at New and Old Kapila Pumping Stations. There are two major existing sewers running along the

left and right bank of river Kapila. The details of those are as follows:

The existing trunk sewer length of the Kapila Left Bank Sewer is 3,511 m and the diameter

ranges from 400 to 700 mm. The sewage is discharged into the Kapila Pumping station.

The existing trunk sewer length of the Kapila Right Bank Sewer is 3,210 m and the diameter

ranges from 250 to 400 mm. The sewage is discharged into the Kapila Pumping station.

A relief sewer named as Makhamalabad Relief Sewer is proposed to augment the existing trunk

and branch sewers.

The wards and their contributing area for Makhamalabad Sub Sewerage Zone are as given below:

Table 3.2: Sewer area contributing to New Kapila PS

Ward No. Total % Area

1 686.87 100%

2 147.88 100%

3 139.17 100%

4 20.08 4%

5 407.63 98%

6 240.24 95%

7 260.17 96%

11 10.72 11%

12 74.88 38%

14 67.05 39%

Grand Total 2054.72


3-6

Table 3.3: Sewer area contributing to Old Kapila PS


14 64.59 38%

Grand Total 64.59

Panchavati Sub Sewerage Zone: This zone is also called as Godavari left bank zone. There are

two gravity trunk main sewers that run along the Godavari left bank. One is constructed by

MWSSB in the year 1969-70, called “OLD SEWER” and the other one is constructed by NMC

before the time of “SIHASTA” in 1991. These two sewers collect the sewerage mainly from the

left bank, viz. Sewer along Ramwadi nalla, Makhamalabad road sewer, sewer along Aruna nalla

and Ramkund sewer and discharge it to the Old Ganeshwadi Pumping Station. Another separate

trunk main runs along Waghadi river to meet the Old Ganeshwadi pumping station. Thus in all

three trunk mains are discharging sewage in to the existing Old Ganeshwadi pumping station.

The existing sewer length in the Panchavati Sub Sewerage Zone is 34,460m and the diameter

ranges from 300 to 1000 mm.

The sewage to be generated from this zone will be taken to Old Ganeshwadi Pumping Station and

consequently to Tapovan STP.

The wards and their contributing area for Panchavati Sub Sewerage Zone are as given

below:

Table 3.4: Sewer area contributing to Panchavati Sub Sewerage Zone


6 11.84 5%

7 10.10 4%

8 50.89 100%

9 10.59 100%

10 9.09 100%

11 90.10 89%

12 3.20 2%

14 17.36 10%

15 25.81 60%

16 23.65 100%

17 18.83 100%


3-7


18 43.38 100%

19 22.98 100%

20 53.49 100%

21 63.87 100%

Grand Total 455.16

Godavari Right Bank Sub Sewerage Zone:

The main trunk sewer is running along the Godavari Right Bank and discharges into the New

Ganeshwadi pumping station. This sewer collects sewage from all the right bank main sewers

viz.: sewers along the Gangapur nalla, Shivaji Nagar nalla, MIDC nalla, Aanandvalli nalla, Mate

Nursery area, Mahatma Nagar area, Mahatma Phule Nagar, intermediate pumping station near

Mate Farm, Sahadev Society, Old pumping station road, Old Gangapur nalla, Medical college

road, Malharkhan nalla & Gharpure ghat nalla. A relief sewer is also proposed to adequate the

Existing Trunk Sewer lines along the Godavari Right Bank.

The existing length in this sewerage zone is 1,24,180 m and the diameter of GRB sewer ranges

from 500 to 1400.

The wards and their contributing area for Godavari Right Bank Sub Sewerage Zone are as

given below:

Table 3.5: Sewer area contributing to New Ganeshwadi Pumping Station


14 3.04 2%

15 17.44 40%

27 39.04 58%

28 15.2 100%

29 16.24 100%

30 30.88 98%

31 41.84 29%

40 11.52 8%

41 17.44 100%

42 7.84 100%

43 11.2 100%


3-8


44 60.72 100%

45 65.84 100%

46 53.2 77%

47 20.16 28%

58 33.76 38%

59 75.52 97%

60 22.08 100%

61 10.56 100%

62 58.96 100%

63 18.24 35%

Grand Total 630.72

Table 3.6: Sewer area contributing to Gangapur Road Pumping Station


22 68.16 66%

23 95.44 100%

24 64.32 66%

25 150.08 50%

26 79.12 73%

48 73.44 63%

49 44 74%

57 1.12 1%

Grand Total 575.68

Table 3.7 : Sewer area contributing to Chikhali Nallah Pumping Station


25 80 27%

49 4 7%

50 56.64 98%

51 260.2 100%

52 56.16 69%

Grand Total 457


3-9

Table 3.8: Sewer area contributing to Chopda Nallah Pumping Station


22 34.8 34%

26 29.04 27%

27 27.84 42%

46 15.52 23%

47 31.2 43%

48 25.68 22%

Grand Total 164.08

Wards with the Contributing area in Tapovan Zone

The Tapovan zone includes the core area of Nashik city. The wards and their contributing area for

Tapovan sewerage zone are given in the table below;

Table 3.9: Wards with the Contributing area in Tapovan Zone

Sr. No. Ward No. Contributing

area

1 1 100%

2 2 100%

3 3 100%

4 5 75%

5 24 45%

6 25 70%

7 26 100%

8 27 100%

9 28 100%

10 29 100%

11 30 100%

12 31 100%

13 32 100%

14 33 100%

15 34 100%

16 35 100%

17 60 65%

18 61 30%


3-10


area

19 62 100%

20 63 100%

21 64 100%

22 65 100%

23 66 100%

24 67 100%

25 68 100%

26 69 100%

27 70 100%

28 71 100%

29 72 100%

30 73 100%

31 74 100%

32 75 100%

33 76 100%

34 77 100%

35 78 10%

36 79 35%

37 80 100%

38 81 100%

39 82 100%

40 83 100%

41 84 100%

42 85 100%

43 86 100%

44 87 100%

3.2.2 Agar Takali Sewerage Zone

The Agar Takali Sewerage Zone consists of the Nasardi Sub Sewerage Zone, Takali Sub

Sewerage Zone.


3-11

Nasardi Sub Sewerage Zone:

Nasardi Sub Sewerage zone consists of the Trunk main sewers viz.: Nasardi Left Bank and

Nasardi Right Bank along River Nasardi.

Nasardi Left Bank:

The area of the Nasardi Left bank is bounded by River Nasardi in the south, the Nashik Municipal

Corporation boundary in the west and the Godavari - Nasardi confluence in the east. The Nasardi

Left Bank carries sewage from Satpur area and discharges in to the Takali Pumping Station

located in Takali village. This trunk main carries sewage from five main branches NL1, NL2,

NL3, NL4, NL5, NL6 and NL7. The existing trunk sewer length of the Nasardi Left Bank is

6,289 m and the diameter ranges from 700 to 800mm.

Nasardi Right Bank:

The project area of Nasardi Right bank sewer is bounded by Bombay – Agra road in the west,

Nasardi river in the North and Gandhi Nagar Takali road in the east. The Nasardi Right Bank

sewer carries sewage from the following branches viz.: NR1, NR2, NR3, NR4, NR5, & NR6 and

discharges the same to Takali Pumping station. The existing trunk sewer length of the Nasardi

Right Bank is 3,746 m and the diameter ranges from 700 to 1200mm.

The Takali Sub Sewerage Zone carries sewage from Bhujbal Farm area and discharges into the

Agar Takali Pumping Station located in Takali village. This trunk main also carries sewage from

Untwadi, Morewadi area. The length of the existing network is 1,23,496 m and the diameter

ranges from 150 to 1200mm in Takali Sub Sewerage Zone.

The Agar Takali zone also includes the core area of city. The wards and their contributing areas

for this sewerage zone are given in the table below.

Table 3.10 : Wards with contributing area in Agar Takali Sewerage Zone


Area

1 30 2%

2 31 71%

3 32 21%

4 37 14%

5 38 46%

6 39 100%


3-12


Area

7 40 92%

8 47 29%

9 48 16%

10 49 17%

11 56 14%

12 57 84%

13 58 62%

14 59 3%

15 63 65%

16 64 100%

17 65 100%

18 76 100%

19 77 100%

20 78 100%

22 80 75%

23 84 30%

24 85 100%

25 86 100%

26 87 100%

27 88 100%

28 89 100%

29 90 100%

30 92 100%

31 93 100%

32 100 26%

33 101 2%

34 102 100%

35 103 100%

36 104 100%

37 105 100%

38 106 100%

39 107 100%

40 108 15%


3-13

3.2.3 Chehadi Sewerage Zone

This sewerage zone consists of three major parts namely Chehadi, Vihitgaon and Chadhegaon.

The brief information about these zones has been mentioned in the following discussion.

Chehadi Sub Sewerage Zone:

The Chehadi sewerage zone consists of Nashik Road and Deolali area. The three main branches

meet the main trunk sewer, which is the Chehadi trunk main. The sewage from the Vihitgaon area

and Chadhegaon area has been taken by gravity to the pumping station at Chehadi.

Chehadi sewerage zone carries 51,224 m of existing network and diameter ranges from 200mm to

1200 mm.The sewage collected at the Chehadi pumping station will be consequently treated at

STP situated at Chehadi itself.

The wards and their contributing area for Chehadi Sub Sewerage Zone are as given below:

Table 3.11: Wards with contributing area to Chehadi Sub Sewerage Zone


66 771.00 100%

67 17.08 28%

68 14.49 44%

69 54.62 66%

70 138.43 64%

71 184.71 100%

72 123.00 100%

73 70.84 100%

74 90.88 100%

75 111.70 100%

94 118.11 100%

95 59.78 100%

96 19.84 100%

97 123.85 100%

98 25.42 34%

99 6.40 3%

Grand Total 1930.16


3-14

Vihitgaon Sub Sewerage Zone:

This zone caters for the region of which almost 50% part is unsewered. This zone carries 7,840 m

of existing network and the diameter varies from 200mm to 400mm.

The sewage from this region will be taken by gravity to the Chehadi Pumping station and will be

treated at Chehadi STP.

The wards and their contributing area for Vihitgaon Sub Sewerage Zone are as given below:

Table 3.12: Wards with contributing area to Vihitgaon Sub Sewerage Zone


70 78.36 36%

Grand Total 78.36

Chadhegaon Sub Sewerage Zone:

This is a zone, which gratifies the area having 100% proposed network.

The wards and their contributing area for Chadhegaon Sub Sewerage Zone are as given below:

Table 3.13 Wards with contributing area in Chadhegaon Sub Sewerage Zone


98 50.28 66%

99 183.84 97%

Grand Total 234.12

3.2.4 Panchak Sewerage Zone

Now this zone is primarily classified into two parts viz.: Dasak Panchak Sub Sewerage Zone and

Panchak Sub Sewerage Zone (Manur).

Dasak Panchak Sub Sewerage Zone:

The Dasak Panchak sewerage zone area is bound by the Godavari river on the north, the right

bank canal on the south, the Nashik Municipal Corporation boundary on the East and Gandhi

Nagar Takali road in the west. The five branch mains meet the Dasak Panchak trunk main.


3-15

This zone carries 34,080 m of existing sewer network and the diameter ranges from 200mm to

800mm.

Panchak Sub Sewerage Zone:

Panchak zone carries 24,780 m of existing sewer network and the diameter ranges from 200mm

to 800mm.

Table 3.14: Sewer area contributing to Panchak zone


32 65.71 65%

33 89.42 89%

34 109.23 100%

35 32.43 100%

36 95.84 100%

37 52.88 96%

38 47.47 56%

67 43.68 73%

68 21.46 49%

69 30.86 66%

Grand Total 1064.79

3.2.5 Kamathwada Sewerage Zone:

Industrial Zone binds northern boundary of this zone. This zone carries 50,164 m of existing

network and the diameter of sewer lines varies from 200 mm to 600 mm.

The part of the sewer line, which is in good condition, shall be augmented for the required

capacity.

Initially some of the sewers will have very low flows, hence the operation and maintenance

required for the sewers having less velocity will be high. Flushing facilities have to be provided

to avoid choking/silting in the sewers.

This zone comprises of following wards with the contributory area:


3-16

Table 3.15: Wards with the Contributing area in Kamathwada Zone


49 1.28 2%

50 1.12 2%

52 25.65 31%

53 64.67 100%

54 23.04 100%

55 10.32 100%

56 17.76 86%

57 16.80 15%

80 23.20 25%

81 62.16 100%

82 46.96 100%

83 183.32 100%

84 118.48 70%

108 178.16 85%

Grand Total 772.92

3.2.6 Pimpalgaon Khamb Zone

This is southern most part of Nashik. River Waldevi flows through this zone. An industrial zone

restricts the boundary of this zone in the Northwest, the military area cuts the boundary of this

zone in the Northeast. The STP for this zone is proposed on the banks of river Waldevi.

This zone carries 18,340 m of existing sewer network and the diameter ranges from 200mm to

800mm.

This zone comprises of following wards with the contributory area:

Table 3.16: Wards with the Contributing area in Pimpalgaon Khamb Zone


100 267.68 73.94

101 690.992 97.83

Grand Total 958.672


3-17

3.2.7 Gangapur Sewerage Zone:

This is the smallest zone in Nashik situated in the Northwest direction. Gangapur STP is proposed

to treat the wastewater generated in this zone, on the banks of river Godavari.

Gangapur sub sewerage zone carries 5,564 m of existing sewer network and diameter rages from

200mm to 400mm.

This zone comprises of following wards with the contributory area;

Table 3.17 : Wards with the Contributing area in Gangapur Zone


24 33.15 34

25 67.49 23

Grand Total 100.63

3.3 PUMPING STATIONS

There are Five (5) Existing Pumping stations which are as Old Ganeshwadi, New Ganeshwadi,

Takali and Kapila Pumping Stations. The existing capacities, length and diameter of rising main

for each Pumping Station is given in the table below.

Table 3.18 : Details about Pumping Stations

Name of Pumping

Station

No. of

Pumps

Capacity Diameter of

Rising main in

mm

Length of Rising

main in km.

Old Ganeshwadi PS (3 + 1) 17.33 MLD, 160 HP

700

2.7 (1 + 1) 10 MLD, 80 HP

New Ganeshwadi PS (2 + 1) 45 MLD, 400 HP

800

2.5 (1 + 1) 22.5 MLD, 160 HP

Takali PS (2 + 1) 21 MLD, 80 HP

700

2.0 (1 + 1) 10.5 MLD, 30 HP

Kapila PS (2 + 1) 7.5 MLD, 50 HP

350

0.5 (1 + 1) 3.75 MLD, 25 HP

Chehadi PS 5 nos. 19.5 MLD, 120 HP 700 0.5

Panchak PS (2 + 1) 7.5 MLD, 40 HP 300 0.5


3-18

Analysis of Pumping Stations:

a. Old Ganeshwadi Pumping station

Type of pumps : Horizontal

Capacity of pumps : (3 + 1) 17.33 MLD, 160 HP

(1 + 1) 10 MLD, 80 HP

Dia of rising main : 700 mm

Length of rising main : 2.7 km

Present capacity of Pumping Station

As per pumping machinery : Peak 50 MLD

Average 25 MLD

As per rising main : Peak 50.00 MLD

Average 25.00 MLD

Max velocity in rising main : 2.13 m/s

b. New Ganeshwadi Pumping station

Dia of incoming sewer : 1400 mm

Pipe material : RCC NP 3

Type of pumps : Horizontal

Capacity of pumps : (2 + 1) 45 MLD, 400 HP

(1 + 1) 22.5 MLD, 160 HP





Average 45 MLD

As per HRT : Peak 90 MLD

Average 45 MLD

HRT assumed : 15 min

Volume of wet well : 1055 m3

As per rising main : Peak 90 MLD

Average 45 MLD

Max velocity in rising main : 2 m/s


3-19

c. Takali Pumping station

Type of pumps : Submersible

Capacity of pumps : (2 + 1) 21 MLD, 80 HP

(1 + 1) 10.5 MLD, 30 HP


Length of rising main : 2 km



Average 21 MLD

As per HRT : Peak 52 MLD

Average 21 MLD



As per rising main : Peak 66 MLD

Average 21 MLD

Max velocity in rising main : 2 m/s

d. Kapila Pumping station


Capacity of pumps : (2 + 1) 7.5 MLD, 50 HP

(1 + 1) 3.75 MLD, 25 HP





e. Chehadi Pumping station


Capacity of pumps : 5 nos. 19.5 MLD, 120 HP





Based on the analysis of pump capacity and rising main diameter the capacity of the pumping

stations was determined and the same is presented in the following table


3-20

Table 3.19 : Details of Pumping Stations Capacities


1 Old Ganeshwadi PS 25.00

2 New Ganeshwadi PS 45.00

3 Takali PS 21.00

4 Kapila PS 7.50

5 Chehadi PS 22.00

Following pumping stations are under construction:

Table 3.20 : Details of Pumping Stations under Construction


1 New Kapila 52.00

2 Nandur Dasak 36.50

3 Agar Takali 210.00

3.4 SEWAGE TREATMENT PLANTS

There are three major existing sewage treatment plants in Nashik City. The details of the

treatment plants are as follows :

Table 3.21 : Details of Sewage Treatment Plants

Sr.

No.

STP Location Average Capacity

(MLD)

Treatment scheme


2 Chehadi 22.00 UASB followed by Facultative Aerated Lagoon

3 Panchak 7.50 Activated sludge process

In addition to the above STP’s, there are three more STPs namely Bhujbal Farm, Morwadi and

Untwadi in CIDCO area of Nashik. These STPs are very old and need major renovation. Thickly

populated residential areas also surround the above STP’s. The residents staying around the

treatment plant complain of bad odour most of the time. This makes it very difficult for them to

stay around the STPs. Hence it is proposed to discard the small STP’s and divert the flow of

CIDCO area to Agar Takali zone by gravity.


3-21

There are two STPs which are under construction;

Table 3.22 : Details of Sewage Treatment Plants under construction

Sr.

No.

STP Location Average Capacity

(MLD)

Treatment scheme

1 Agar Takali 70.00 Activated Sludge Process


3.4.1 STP at Tapovan

The STP at Tapovan receives flow from four different pumping stations namely Old Ganeshwadi,

New Ganeshwadi, Takali and Kapila. This 78 MLD capacity Sewage treatment plant at Tapovan

is based on UASB followed by Facultative Aerated Lagoon.

Fig : 3.3 Sewage Inlet Chamber with Four Rising Mains at Tapovan

Design Criteria

The Design Criteria for the Tapovan Sewage Treatment plant is as given below :

Design Flow

The summary of the Average Flow to the 78 MLD STP at Tapovan is given below;

Average Flow : 78 MLD

Peak Factor : 2.0

Peak Flow : 156 MLD


3-22

Table 3.23: Average Flow from Existing PS to Tapovan STP for Key years

SN Pumping Station 2011 (MLD) 2016 (MLD) 2031 (MLD)

1 Old Ganeshwadi 23.07 27.24 24.83

2 New Ganeshwadi 44.03 45.35 46.21

3 Kapila 6.17 7.15 7.51

Total 73.27 79.74 78.55

Design Parameters

The Raw and Treated Effluent parameters which have been considered for the design of the

Tapovan treatment plant are as follows.

Table 3.24 : Raw and Treated Effluent Parameters

Parameters Raw Treated

PH 6.0 to 8.0 7.0 to 8.0

BOD5 at 20 0C, mg/l 100 - 200 < 20

Suspended solids, mg/l 200 - 400 < 50

Treatment Scheme

The inlet chamber receives raw sewage from the above said four pumping stations. It then passes

through screen chamber and manual Grit channels. In the screen chamber floating matter is

trapped and removed whereas in grit chamber, grit is removed. The sewage having been treated

for screening and grit removal is then treated biologically in the UASB Reactor. The overflow

from the UASB reactor is taken to the Facultative Aerated Lagoon (FAL).

Overflow from Aerated Lagoon shall be taken to the proposed chlorine contact tank for

disinfection. Disinfected treated sewage is then discharged into river Godavari.

The sludge from UASB reactor is dewatered using Sludge Drying Beds before disposal. The

biogas generated in the UASB reactor is stored in the Gasholder. This biogas is utilised for

generation of electricity using a duel fuel gas engine.

Treatment Plant Units

The Existing treatment plant Unit Sizes for the 78 MLD STP at Tapovan are given below:


3-23

Table 3.25: Unit Sizes for the 78 MLD Sewage Treatment Plant at Tapovan

S. No Unit Nos. Size

1 Inlet chamber 1 3.1 m x 5.15 m x 2.5 m SWD

2 (i) Screen chamber Mechanical 2 5 m x 1.0 m x 0.9 m SWD

2 (ii) Screen Chamber Manual 1 5 m x 1.65 m x 0.9 m SWD

3 Grit chamber 4 16.8 m x 2.75 m x 0.9 m SWD

4 Collection Tank 1 11.0m x 2.75 m x 1.0 m SWD

5 Division box 2 3.5 m x 3.25 m x 0.9 m SWD

6 Distribution box 12 2 m x 1.55 m x 0.8 m SWD

7 UASB Reactors 6 32 m x 30 m x 4.86 m SWD

8 Sludge Sump 1 4.0m dia x 6.5 m SWD

9 Sludge Drying Beds 30 18 m x 13.6 m x 0.3 m SWD

10 Facultative Aerated Lagoon 2 100 m x 74 m x 4 m SWD

11 Filtrate Pump Sump 1 4.0m dia x 5.4 m SWD

12 Flow meter (Chamber Size) 1 4 m x 2 m x 1.5 m SWD

13 Gas Holder 1 12.0m dia x 4.0 m SWD

14 Gas Burner 1 6.0 m above FGL

15 STP MEP Room 1 72 m. sq.

16 Generator Room 1 90 m. sq.

17 Office and Lab Building 1 132.0 m.sq.GF + 105.0 m.sq. FF

18 Sludge Withdrawal Pit 24 2.5m x 2.5 m

19 Common Effluent Channel 3 64.0m x 1.0 m x 0.9m

20 Final Effluent Channel 1 160.0m x 1.9 m x 0.8m

21 Filtrate Pump Panel Room 1 3.0m x 3.0 m

22 Sludge Pump Panel Room 1 3.0m x 3.0 m

23 By Pass Pipe Line 1400 mm dia Lot 1.4m dia x RCC NP3 pipe X 180 m

24 Future Extension - -

25 Polishing Pond (FAL Part II) 2 105.0m x 74.0 m x 1.25m

26 Chlorine Contact Tank 1 40.0m x 20.0 m x 3.5m

27 Chlorine House 1 20.0 m x 10.0 m

28 Treated Sewage Disposal Line 250 m 1.4m dia x RCC NP3 pipe

29 Storm Water Drain Pipe 750 m 0.3 m dia x RCC NP3 pipe


3-24

3.4.2 STP at Chehadi

This plant receives raw sewage from the existing pumping station located in the STP premises.

Design Criteria

The Design Criteria for the Chehadi Sewage Treatment plant is as given below :

Design Flow

The summary of the Average Flow to the 22 MLD STP at Chehadi is given below

Average Flow : 22 MLD

Peak Factor : 2.0

Peak Flow : 44 MLD

Design Parameters

The Raw and Treated Effluent parameters, which have been considered for the design of the

Chehadi treatment plant, are as follows.

Table 3.26: Raw and Treated Effluent Parameters


pH 6.0 to 8.0 7.0 to 8.0

BOD5 at 20 0C, mg/l 100 - 200 < 20


Treatment Scheme

The inlet chamber receives raw sewage from the above said four pumping stations. It then passes

through screen chamber and manual Grit channels. In the screen chamber floating matter is

trapped and removed whereas in grit chamber, grit is removed. The sewage having been treated

for screening and grit removal is then treated biologically in the UASB Reactor. The overflow

from the UASB reactor is taken to the Facultative Aerated Lagoon (FAL).

Overflow from Aerated Lagoon shall be taken to the proposed chlorine contact tank for

disinfection. Disinfected treated sewage is then discharged into river Godavari.


3-25

The sludge from UASB reactor is dewatered using Sludge Drying Beds before disposal. The

biogas generated in the UASB reactor is stored in the Gasholder. This biogas is utilised for

generation of electricity using a duel fuel gas engine.

Treatment Plant Units

The treatment plant Unit Sizes for 22 MLD STP at Chehadi are given below:

Table 3.27 : Unit Sizes of Existing 22MLD STP at Chehadi

S. No Unit Nos. Size

1 Inlet chamber 1 2.1m x1.1m

2 Screen chamber 1 2.5m x 1.0m

3 Grit channel 2+1 18m x 1.25 m

4 Division box 1 4.0 m x 1.0 m

5 Distribution box 4 2.6 m x 1.6 m

6 UASB Reactors 6 32 m x 24m

7 Facultative Aerated Lagoon – I 2 79 m x 30 m

8 Facultative Aerated Lagoon – II 2 74 m x 30 m

9 Final Effluent Channel 1 0.7 m x 0.7 m

10 Sludge with Pit 8 3.5 m x 3.0 m

11 Sludge Sump 1 4.5 m dia

12 Sludge Drying Beds 14 22.0m x 10.39m

13 Drain Sump 1 5.0 m dia

14 Biogas Holder 1 8.0 m dia

15 Gas Flaring System 1 2.0m x 2.0m

16 Substation 1 20.0 x 15.0 m

17 Pump House 1 30.0 m x 25.0 m

18 Panel 1 15.0 x 10.0 m

19 Pre Aeration Tank 1 12.50m x 12.50 m x 3.0m SWD

20 Chlorine Contact Tank 1 24.0m x 12.0 m x 3.6m

21 Chlorine House 1 1.5 m x 5.0 m

3.4.3 STP at Panchak

This plant receives raw sewage from the existing pumping station located in the STP premises.


3-26

Design Criteria

The Design Criteria for the Panchak Sewage Treatment plant is as given below :

Design Flow

The summary of the Average Flow to the 7.5 MLD STP at Panchak is given below

Average Flow : 7.5 MLD

Peak Factor : 2.5

Peak Flow : 15 MLD

Design Parameters

The Raw and Treated Effluent parameters which have been considered for the design of the

Panchak treatment plant are as follows.

Table 3.28: Raw and Treated Effluent Parameters


PH 6.0 to 8.0 7.0 to 8.0

BOD5 at 20 0C, mg/l 100 - 200 < 20


Treatment Scheme

The treatment scheme followed is Activated Sludge Process. Raw sewage will be received in the

inlet chamber and then passed to the screen channel and subsequently to the Detritor tank. In the

screen channel floating matters are trapped and removed whereas in Detritor tank, grit is

removed. After screening and grit removal the wastewater is taken into the Primary Clarifier. This

is provided for the removal of suspended matter before taking wastewater for further biological

treatment. The sludge generated as a result of primary settling is taken for thickening and

subsequently for digestion. A sludge digester and pumps are provided for this purpose.

After primary settlement of the suspended matter, the wastewater is taken to aeration tank

containing micro-organisms in suspension in which the biological degradation takes place.

Further, a secondary Clarifier is provided to separate the activated sludge. A part of the incoming

flow is re-circulated upstream of the aeration tank. A tapping is provided on this line to lead the

excess sludge to the sludge sump.


3-27

A sludge digestion system is provided for sludge digestion. Mixers are provided to operate in a

completely mixed regime in the digester. Sludge drying beeds are provided to dewater the sludge.

Disposal of treated effluent

The disposal of treated effluent from Tapovan and Panchak STP is discharged in to the river

Godavari.

The treated effluent from Chehadi STP is discharged in to river Waldevi.

CHAPTER 4 :

DESIGN BASIS AND

CRITERIA


4-1

4 DESIGN BASIS AND CRITERIA

Anticipation of future growth in any community in terms of population or commercial and

industrial expansion should be based on a long term Master Plan, which shall form the basis for

preparation of plan for providing the amenities including installation of sewers in the area to be

served. A plan of this type will permit the orderly and timely expansion of the facilities on a

sound technical and financial basis, without resorting to costly crash programs. The provision for

future should not however be much in excess of the actual generation of sewage in the early

years of its use to avoid deposition in sewers.

The design of sewerage system, pumping stations and sewage treatment plants for Nashik has

been generally based on the design criteria given in the Manual on Sewerage and Sewage

Treatment published by CPHEEO and also the prevailing standard engineering design practices

in India.

4.1 WATER DEMAND

Water demand is taken from the DPR for Water Supply prepared by NMC. Summary of the

water demand is as follows

Year Poulation Poulation

in slums

water

requirement

for

population

connected

at 150 lpcd

Water

for

slums at

40 lpcd

Institutional

Demand

Fire

Demand

Floating

Population

Demand

Total

water

demand

at

Consumer

end

system

losses

at

15%

Total

water

Demand

Say

lakhs lakhs MLD MLD MLD MLD MLD MLD MLD MLD MLD

2006 13.50 1.6 178.50 6.40 24.00 4.00 4.00 216.90 32.54 249.44 250

2011 17.50 0.8 250.50 3.20 31.00 5.00 5.00 294.70 44.21 338.91 339

2016 21.45 0.5 314.25 2.00 35.00 5.75 5.75 362.75 54.41 417.16 418

2021 26.00 0.3 385.50 1.20 40.00 5.75 5.75 438.20 65.73 503.93 504

2026 31.75 0.3 471.75 1.20 44.00 6.00 6.00 528.95 79.34 608.29 609

2031 37.50 0.3 558.00 1.20 48.00 6.00 6.00 619.20 92.88 712.08 713

2041 48.50 0.3 723.00 1.20 62.00 6.00 6.50 798.70 119.81 918.51 919

Based on the above table, sewage flow is calculated for the key years. Water for fire demand will

not enter into the sewerage system. Hence it not considered for calculating the total sewage flow.

4.2 ESTIMATION OF SEWAGE FLOW

4.2.1 Design Period

The ultimate design year for the sewer design has been specified as 2041 in the CDP.


4-2

Planning horizon 1: Initial Phase for Electrical and Mechanical works : Upto year 2016

Planning horizon 2: Second Phase : Upto year 2026

Planning horizon 2: Ultimate phase for Civil works : Upto year 2041

4.2.2 Population Forecast

Population projections have been verified with CPHEEO guidelines. The population forecasted

for the years 2011, 2021, 2031 and 2041 is 17.50 lakhs, 26 lakhs, 37.5 lakhs and 48.50 lakhs

respectively as Water

Date post:	03-Aug-2020
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