Ultragreen™

GUARANTEE THE WATER QUALITY BEYOND

THE HIGHEST STANDARDS, EVEN IN THE CASE

OF STRONG SEASONAL FLUCTUATIONS.

BIOLOGICAL PURIFICATION BY ULTRAFILTRATION

FLAT SHEET MEMBRANES. RECOMMENDED

FOR INSTALLATIONS UP TO 100,000 PE.URBAN

WASTEWATER

P-PPT-ER-007-EN-1107

Urban

Wastewater

• The Challenges facing U.W.W Treatment

• The Choice of Membrane on U.W.W. Treatment

• The Membrane Bioreactor Range

• Membrane Technologies: the Degrémont Choice

• Properties of the Toray Membranes used in Ultragreen™

• Operating Principle

• Advantages of Ultragreen™

• Some references

• Case study: Val d’Arly (73), FRANCE

CONTENTS

Ultragreen™

Urban

Wastewater

THE CHALLENGES FACING U.W.W. TREATMENT

Increasingly stringent discharge standards• Health & safety (water standards)• Protecting the natural environment (European

framework directive)

Protecting water resources• Reuse (irrigation etc.)

Special limitations• Site limitations (available area)• Rehabilitation limitations• Operating limitations

Ultragreen™

THE CHOICE OF MEMBRANES ON U.W.W. (1/3)

Cl2

Primary sedimentat

ion

ClarifierBiological TANK

Sand filter

Disinfection

UF

PRE-TREATMENT

PRE-TREATMENT

TANKBiological and membrane filtration

THE CHOICE OF MEMBRANES ON U.W.W. (2/3)

DYNAMIC SEPARATION PHYSICAL BARRIER

Suspended solids «leakage»

Danger of denitrificationin the clarifier

Control over filtration and of the suspended

solids content in discharges

Urban

Wastewater

THE CHOICE OF MEMBRANES ON U.W.W. (3/3)

Compact design: • For the same target water quality, membranes can replace

several conventional treatment stages.

Integration:

• Architectural: structures are more compact, so that the

architectural constraints are easier to meet

Performances:

• Membranes form a physical barrier; water quality is

constant and, therefore, unaffected by fluctuating hydraulic

loading.

Ultragreen™

Urban

Wastewater

THE MEMBRANE BIOREACTOR RANGE (MBR) FOR TREATING WASTEWATER IS AVAILABLE IN TWO VERSIONS IN ORDER TO MEET THE REQUIREMENTS OF ALL CLIENTS.

THE MEMBRANE BIOREACTOR RANGE

In order to meet market demands and the specific requirements set in technical specifications, in future, Degrémont will deploy two complementary membrane technologies:

Ultrafor™Ultragreen™

Ultragreen™

Flat SheetMembranes

Specificprocess features

Preferential application

THE MBR RANGE

15 g/L

Plant SizeModels Maximum concentration of sludge in membrane tank recommended

Ultragreen™

Hollow fibersOut /In filtration

No limitsUltrafor™ 10 g/L

TORAY

Membrane manufacturer

GE

0 to 100,000 p.e.

0 to 20,000 m3/d

TECHNOLOGIES: THE DEGREMONT CHOICE

�2 complementary technologies that still form

part of the ultrafiltration sector

PLATES

Membrane density

Backflushing

Concentration-related flow

Membrane energy costs(low concentration)

Flexibility(small plants)

Lower pre-treatment requirements

Simplicity

Maximum sludge concentrationIn membranes

Membrane energy costs(high concentrations)

Layout (major plants)

HOLLOW FIBERS

TORAY: A TRUSTED NAME IN ULTRAFILTRATION

RO/NF for Desalination UF HF Membrane

“Torayfil (PAN)”

UF/MF HF Membrane

“PVDF membrane” PVDF UF for MBR

Trihalomethanes

Mem

bra

ne

Tar

get

of

Sep

arat

ion

0.001μμμμ m 0.01 μμμμ m 0.1 μμμμ m 1μμμμ m 10 μμμμ mSize

Na+, Cl- Ions

Pesticide, Organic Material

Virus

Bacteria

CryptosporidiumColiform

Ca2+, Mg2+, SO42 - Ions

NF(Nano-Filtration)

RO(Reverse Osmosis)

UF(Ultra-Filtration) MF

(Micro-Filtration)

Ion, small molecule PolymerColloid

SiltTrihalomethanes

Mem

bra

ne

Tar

get

of

Sep

arat

ion

0.001μμμμ m 0.01 μμμμ m 0.1 μμμμ m 1μμμμ m1μμμμ m 10 μμμμ mSize

Na+, Cl- Ions

Pesticide, Organic Material

Virus

Bacteria

CryptosporidiumColiform

Ca2+, Mg2+, SO42 - Ions

NF(Nano-Filtration)

RO(Reverse Osmosis)

UF(Ultra-Filtration

)MF

(Micro-Filtration)

Ion, small molecule PolymerColloid

Silt

Ultragreen™ : THE TORAY MEMBRANES

• Submerged flat sheet membranes

• Filtration by gravity suction or pumping

• Continuous aeration throughout filtration

Ultragreen™ : THE MODULES (1/3)

Space separating the membranes: 7.5mm

13.5mm

6.0mm

Aeration block

Ultragreen™ : THE MODULES (2/3)

• Reference: TMR140-100

• Number of plates: 100

• Membrane surface area: 140 m2

• Height: 2,100 mm

• Length: 1,620 mm

• Width: 565 / 810 mm

Aeration block

Membrane block

Permeate collectors

• Reference: TMR140-200D

• Number of plates: 200

• Membrane surface area: 280 m2

• Height: 4,160 mm

• Length: 1 620 mm

• Width: 565 / 810 mm

Ultragreen™ : THE MODULES (3/3)

�One single aeration unit for the

entire aeration block

Urban

Wastewater

−An ultrafiltration membrane (0.08 µm)

−Tight distribution of pore sizes

Pore diameter (µm)

Pore

density

(10

12

units.m

-2)

THE TORAY MEMBRANES (1/3)

Ultragreen™

�Clogging controlled

Urban

Wastewater

Mem

bra

ne

Mem

bra

ne

TORAY

THE TORAY MEMBRANES (2/3)

Ultragreen™

�Clogging controlled

Urban

Wastewater

•HIGH PORE DENSITY

•HYDROPHILIC MEMBRANE

���� High permeability

���� Low trans-membrane pressure

THE TORAY MEMBRANES (3/3)

Ultragreen™

LINES - ULTRABOX

1 Ultrabox – 1 short line (≤≤≤≤ 8 module places)

Cross section

Viewed from above

Permeate outlet

Permeate outlet

Ultragreen™ : A LAYOUTEXAMPLE

Aeration network

blowdown

Collectors

Aeration network

Example with 2 reactors:

Urban

Wastewater

Ultragreen™ ADVANTAGES

COMPACT PRODUCT:

• Suppression of clarifiers

• SS concentrations in the bioreactor are higher than with conventional AS

• No denitrification required if the discharge permit allows it

• Cost of civil works is reduced– Landscape integration is easier because of compactness

TREATED EFFLUENT QUALITY: • Assimilation of the pollution by the biomass + membrane

filtration that stops all suspended solids

• Better quality effluent, with consistency• Severe discharge levels in TSS, BOD5, COD, TN, TP

(sensitive areas)

• Discharge permits with disinfection requirements

Ultragreen™

SOME REFERENCES

PLANT NAME COUNTRY CAPACITY (PE)START-UP

DATE

Crest Voland France 5,600 2011

St Barthélémy France 3,500 2012

Cogolin France 6,000 2011

Pierre Lenquette New Caledonia 2,500 2012

CASE STUDY:VAL D’ARLY (73), FRANCE

CONTEXT:

• Construction of a 28,000 p.e. wastewater treatment plant

• Client: Syndicat Intercommunald’Eau Potable et d’Assainissementdes Moulins (SIEPAM)

• To be commissioned mid 2011

Specific features of the project:

– Its proximity to the village–Protecting the Arly (river)–High seasonal variations–Operating authority–Sustainable Development Aspect

DESIGN :

• Treatment line: – Fine bar screen (6 mm)– Grit – Grease removal– Straining (2 mm)– Distribution structure– Biological tanks (Incorporated buffer

tank)– Ultragreen™

• Water system running in gravity mode

• Number of Ultragreen™: 4 lines of membranes in 4 reactor tanks including one on total standby

CASE STUDY:VAL D’ARLY (73), FRANCE