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BIOFOR Technology SAURABH GUPTA

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PRESENTED BY- SAURABH GUPTA
Transcript
Page 1: BIOFOR Technology SAURABH GUPTA

PRESENTED

BY-

SAURABH

GUPTA

Page 2: BIOFOR Technology SAURABH GUPTA

BIOFOR Technology includes Intensified Aerobic treatment

with Dense-Deg & BIOFER.BIOFOR filters are aerobic or

anoxic biological reactors that use attached growth

technology for application in municipal or industrial

wastewater treatment. The BIOFOR technology can be

applied to aerobic carbonaceous BOD5 removal and to

nitrification and Denitrification.

MAIN FEATURES

•Upflow filtration in which feedwater flow expands the filter

media leading to an even distribution of the biomass

throughout the bed

•Co-current flow of feedwater and air prevents short

circuiting and also extends the length of filter run times

•Quick adaptability to flow and load variations

•Enhanced primary treatment with addition of coagulants and

flocculants

•High rate primary tube settlers and integrated thickening

offers space economy

Page 3: BIOFOR Technology SAURABH GUPTA

Contd...

•Two stage high rate filtration through a biologically

active media and with enhanced external aeration.

•Deep reactors enabling low land requirements.

•A compact and robust system.

•Very limited odour production.

Page 4: BIOFOR Technology SAURABH GUPTA

HOW IT WORKS

The effluent to be treated enters continuously from

the bottom of the reactor and is distributed over the

entire filter surface area by the nozzle underdrain.

The water then passes through the Biolite filter

media which retains the suspended solids.

Carbonaceous and nitrogenous pollution is

eliminated through the high concentration of fixed-

film biomass which is retained on the filter media

during the filtration cycle. Process air is introduced

continuously into the lower part of the reactor by air

diffusers .BIOFOR employs a proprietary dense

granular support media that acts as a biological

contactor as well as a filter, thus eliminating the

need for a separate clarification step. Exceptionally

high oxygen transfer is achieved in the media due to

the up-flow pattern of air bubbles. The biological

Page 5: BIOFOR Technology SAURABH GUPTA
Page 6: BIOFOR Technology SAURABH GUPTA

Process Flow Diagram of STP based on BIOFOR at Sen Nursing Home

Drain, Delhi

Page 7: BIOFOR Technology SAURABH GUPTA

The DensaDeg Clarifier/Thickener is a high-rate solids contact clarifier which

combines optimized flocculation, internal and external sludge recirculation, and

plate settling in two conjoined vessels to maximize hydraulic loading and

treatment efficiencies. The proprietary blend of energy input and high volume

solids recirculation reduces waste volumes and results in rapid settling operation

and high quality treated water.

Page 8: BIOFOR Technology SAURABH GUPTA

BIOFOR MEDIA

BIOLITE filter material with rough & porous surface

are particularly used in BIOFOR for treatment. The

multi-porous structure provides 6-8 times large

surface compared to other bio-media. Its highly

penetrative porous structure enables the aerobic

nitrifying bacteria’s nitrification and

anaerobic denitrifying bacteria’s denitrification.

BIOLITE media used in

BIOFOR

Page 9: BIOFOR Technology SAURABH GUPTA

PERFORMANCE

•Suspended solids removal and BOD removal of

90% and 70% respectively in the primary clarifier

•High quality effluent with BOD under 10 mg/l and

total system efficiency of 94-99.9%

•Low turbidity with suspended solids under15 mg/l

•Pathogen removal of 2 on log scale

Page 10: BIOFOR Technology SAURABH GUPTA

SPECIFIC REQUIREMENTS

•Addition of alum as coagulant(~@60ppm).

•Polyelectrolyte for high rate

sedimentation(~@around 0.2-0.3ppm) in tube

settlers.

•Special granular filter media ‘biolite’ made of clay.

•Backwash of BIOFER bed and recycle of

wastewater.

•Treatment(digestion) and disposal of sludge from

clarifier(not provided at STPs due to space

limitations).

ENERGY REQUIREMENT

•220-335KWh/ML treated. Approximately double of ASP

LAND REQUIREMENT

•0.04 hectares per MLD installed capacity(excluding

land requirement for sludge drying beds).Much

lower than ASP.

Page 11: BIOFOR Technology SAURABH GUPTA

SLUDGE PRODUCTION

•Thickened sludge @1000KG/MLD water treated

CAPITAL COSTS

•Rs. 6.5-8.1 million per MLD capacity . More than

double that of ASP

O&M COSTS

•Rs.0.86 million/year/MLD installed capacity . Much

higher than ASP.

Page 12: BIOFOR Technology SAURABH GUPTA

PHYSIO-CHEMICAL ANALYSIS OF BIOFOR STP located at Dr. Sen Nursing Home

drain, DelhiParameters PH TSS BOD COD

MONTH 2013 INLET OUTLE

T

INLET OUTLET INLET OUTLET INLET OUTLET

JANUARY 7.03 6.8 969 17 306 3 925 13

FEBRUARY 7.4 7.3 448 14 115 10 296 36

MARCH 7.3 7.2 324 12 140 8 460 32

APRIL 7.4 7.3 328 14 100 9 368 32

MAY 7.4 7.3 344 14 145 8 324 44

MAXIMUM 7.4 7.3 969 17 306 10 925 44

MINIMUM 7.03 6.8 324 12 100 3 296 13

AVERAGE 7.3 7.2 483 14.2 161 27.6 475 31.4

% REDUCTION 97% 95.2% 93.4%

Microbial Analysis of BIOFOR based STP

PARAMETERS INLET OUTLET

TOTAL

COLIFORM(MPN/100ML)97 X10^6 42X10^5

FECAL

COLIFORM(MPN/100ML)24 X10^7 23 X10^4

Page 13: BIOFOR Technology SAURABH GUPTA
Page 14: BIOFOR Technology SAURABH GUPTA
Page 15: BIOFOR Technology SAURABH GUPTA

ADVANTAGES

•COMPACT LAYOUT AS A RESULT OF HIGH RATE

PROCESSES

•HIGHER AERATION EFFICIENCY THROUGH CO-CURRENT

DIFFUSED AERATION SYSTEM

•SPACE SAVING AS SECONDARY SEDIMENTATION IS

DISPENSED

•ABLE TO WITHSTAND FLUCTUATIONS IN FLOW RATE AND

ORGANIC LOADS

•COMPLIANCE WITH STRICTER DISCHARGE STANDARDS

•EFFLUENT SUITABLE FOR INDUSTRIAL APPLICATIONS

•EFFLUENT SUITABLE FOR UV DISINFECTION WITHOUT

FILTRATION

•ABSENCE OF AEROSOL AND ODOUR NUISANCE IN THE

WORKING AREA

•ABSENCE OF CORROSIVE GASES IN THE AREA

•LOW OPERATION SUPERVISION ENABLES LESSER

MANPOWER REQUIREMENT

Page 16: BIOFOR Technology SAURABH GUPTA

DISADVANTAGES

•CONTINUOUS AND HIGH CHEMICAL DOSING IN PRIMARY

CLARIFICATION

•UNDIGESTED SLUDGE FROM PRIMARY CLARIFICATION

REQUIRING POST TREATMENT

Page 17: BIOFOR Technology SAURABH GUPTA

CONCLUSION

• BIOFOR technology is being used as an advanced aerobic method for

sewage treatment as an alternative to conventional aerobic treatment

technologies.

• Results of STPs based on BIOFOR Technology indicate that BOD, COD

& Suspended Solids

removal efficiencies were noted to be 95.2%, 93.4% and 97% respectively,

that indicates efficient removal of the parameters.

•As compared to other treatment technologies, area requirement is lowest

for BIOFOR which is around 500m2/MLD.

• Energy requirement is 220 kWh/d/MLD which is high as continuous high

rate aeration is required to be provided in Biofiltration tank.

• The technology was found to be quite satisfactory in removal of Fecal

Coliform from the wastewater though not efficient enough in removal of

Total Coliform. However, after disinfection high quality of microbial

population reduction can be achieved.

• Conventional Treatment technology such as ASP not only involves

higher initial investments but also incur higher O&M Costs to run the

system based on the same. Thus, BIOFOR systems open up further

possibilities for a more economically and secure sewage treatment

process in India.

Page 18: BIOFOR Technology SAURABH GUPTA

REFERENCES

•Charu Sharma, S.K Singh Performance Evaluation Of Sewage

Treatment Plant Based On Advanced Aerobic Biological Filtration

And Oxygenated Reactor (BIOFOR) Technology- A Case Study Of

Capital City -Delhi, India

•http://cseindia.org Innovative Technologies for Urban Waste

Water Treatment

•http://www.degremont-technologies.com/

•COMPENDIUM OF SEWAGE TREATMENT TECHNOLOGIES

,NATIONAL RIVER CONSERVATION DIRECTORATE MINISTRY

OF ENVIRONMENT & FORESTS GOVERNMENT OF INDIA

Page 19: BIOFOR Technology SAURABH GUPTA

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