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Ultrafor™

URBAN

WASTEWATER

GUARANTEE THE WATER QUALITY BEYOND

THE HIGHEST STANDARDS

BIOLOGICAL PURIFICATION BY HOLLOW FIBER

ULTRAFILTRATION MEMBRANES

P-PPT-ER-006-EN-1107

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CONTENTS

• The challenges and choice of membranes for U.W.W. (Urban Wastewater) treatment

• The Membrane Bioreactor Range

• Membrane technologies: the Degrémont choice

• The Ultrafor™ utilization area

• The MBR Process

• Properties of the GE Membranes used in the Ultrafor™

• Operating Principle

• Design Principle

• Advantages of the Ultrafor™

• Case Study: La Morée (93), France

• Case Study: Mediouna, Morocco

Ultrafor™

Urban

Wastewater

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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• Operational limitations

Ultrafor™

Urban

Wastewater

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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

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

DYNAMIC SEPARATION A PHYSICAL BARRIER

Suspended solids «leakage»

Danger of denitrificationin the clarifier

Control over filtration and of the suspended

solids content in discharges

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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.

Ultrafor™

Urban

Wastewater

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THE MEMBRANE BIOREACTOR (MBR) RANGE 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 the future, Degrémont will deploy two complementary membrane technologies:

Ultrafor™Ultragreen™

Ultrafor™

Flat sheetmembranes

Specificprocess features

Preferential application

0 to 100,000 p.e.

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

Membranemanufacturer

GE

0 to 20,000 m3/day

Urban

Wastewater

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TECHNOLOGIES: THE DEGREMONT CHOICE

�2 complementary technologies that still form

part of the ultrafiltration sector

PLATES

HOLLOW FIBERS

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)

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THE Ultrafor™AREA OF UTILIZATION

Ultrafor™ is suitable for Urban Wastewater and Industrial Wastewater treatment. It achieves a quality of effluent that meets the requirements of the most stringent standards on discharge or that can be recycled for reuse.

Pre-treatment

Raw water Désinfection

UV Diinfection

Discharge into the

Natural environment

OI

Reverse osmosis

+-+

-

+-+

-

Electrodialysis

ULTRAFOR

membrane bioreactors

Reuse

Discharge

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THE MBR PROCESS

THE MBR PROCESS COMBINES BIOLOGICAL

PURIFICATION USING ACTIVATED SLUDGE WITH

ULTRAFILTRATION MEMBRANE CLARIFICATION.

Ultrafor™ uses GE ZW500 hollow fiber membranes.

Ultrafor™

Urban

Wastewater

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GE membrane

Ultrafiltration membrane

(0.04 µm),

Hollow fiber membrane with a

reinforced structure,

Material: PVDF (Polyvinylidene

Fluoride, the submerged

membrane polymer),

Proven membrane longevity on

many Urban Waste Water sites.

Membrane surface viewed under the

electronic microscope

PROPERTIES OF THE GE MEMBRANES

Ultrafor™

Urban

Wastewater

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OPERATING PRINCIPLE (1/3)

Ultrafor™

Retention of solids

Biological purification designed on the basis of treatment objectives:

• Elimination of carbonaceous pollution and nitrification,•Denitrification,•Dephosphatation

Combined liquid clarification using membranes :

• Filtration is carried out by drawing through the membrane by gravity or by pumping.

Pretreatment and/or primary

treatment (if required)

SludgeTreatment

Raw Water

TreatedWater

Urban

Wastewater

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Ultrafor™

Filtration through suction

OPERATING PRINCIPLE (2/3)

Treated water

Biological tank or dedicated tank

Submerged membranes

Membrane aeration

Surplus sludge

Backflushingreserve

Suction and backflushing

pump

Urban

Wastewater

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1. MEMBRANE AERATIONContinuous sequencing

2. BACKFLUSHINGAutomatically - every 10 minutes

3. MAINTENANCE WASHTwice weekly – automatic

4. REGENERATION CLEANTwice a year

���� A guarantee against cloggingUltrafor™

OPERATING PRINCIPLE (3/3)Urban

Wastewater

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DESIGN PRINCIPLE:

PRE-TREATMENT

Bar screen

Grit – grease remover

Buffer capacity (upstream or in the biological section):• Optimizing membrane design

Fine straining:• For membrane protection • Hollow fibers: 1 mm

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DESIGN PRINCIPLE:

BIOLOGICAL TREATMENT

Designed to eliminate carbon and for nitrification treatment:• → Good activated sludge filtration capacity,• More thorough treatment if required (denitrification,

biological and physical-chemical dephosphatation)

The biological reactor:• Sequenced channel or plug flow• Anoxia at the inlet or sequential aeration

Activated sludge concentration (6 to 12 g.L-1) in the biological unit:• The high concentration option is the result of

a technical-economic compromise that depends on client objectives and limitations

Ultrafor™

Urban

Wastewater

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DESIGN PRINCIPLE: ULTRAFILTRATION

The design and installation of membranes affect their longevity

Design data required:• A knowledge of hydraulic conditions

–An annual average,–A monthly maximum (30 days),–A weekly maximum (7 days),–A daily maximum (24 hours),–Hourly peaks.

• Membrane design can be optimized when there is the possibility of using a buffer capacity for evening out hourly peaks

Urban

Wastewater

Ultrafor™

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TREATMENT GUARANTEES

THE DISCHARGE QUALITY PRODUCED BY THE Ultrafor™ SOLUTION

PARAMETERSGUARANTEES

DEMANDEDQUANTIFICATION LIMITS

COD< 50 mg/L

(depends on the refractory soluble COD in the treated water)

30 mg.L-1

BOD < 10 mg/L 3 mg.L-1

SUSP. SOLIDS < 3-5 mg/L 3 mg/L

Turbidity 2 NTU 0.5 NTU

NGL 10mg/L, 15 mg/L

Disinfection Meets bathing water and reuse standards

Helminth eggs Total retention

E. coli 100 /100 ml

Enterococci 50 /100 ml

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SUMMARY OF Ultrafor™ STRENGTHS

A quality effluent that provides a solution to problems involving:• The protection of the natural environment and its

biodiversity & Health safety => Discharges• The conservation of potable water resources => Water

reuse

Extremely compact:• Minimized footprint, reduced amounts of civil works• Easily put in place when extending a plant that is

undergoing rehabilitation works

Optimized energy consumption:• Maximized transfers of oxygen from biological treatment • Minimized membrane aeration

Ultrafor™

Urban

Wastewater

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NUMEROUS REFERENCES

More than 40 references in the world including:

Bonifaccio

Petit Bourg (Guadeloupe)

La Morée (Le Blanc Mesnil)

Veules-les-Roses

Claye-Souilly

Fontainebleau / Avon

Mers-les-Bains / Le Tr éport

Carpentras

Dourdan Ollainville

St Barthélémy

IN FRANCE

Cannes (Aquaviva)

Grasse-la-Paoute

Grasse Roumigui ères

Fitou

Ile de Br éhat

Perros Guirec (Kervasclet)

Carantec

Ploudalmezeau

Plouescat

Baillargues

La Montagne (Nantes)

L'Ile d'Arrault (Orl éans)

La Canourgue

Sarzeau (Kergorange)

Villefranque

Bora-Bora (French Polynesia)

Calasparra, Murcia (Spain)

Firgas (Canary Islands)

Jinamar (Canary Islands)

Morrojable (Canary Islands)

Cubbon Park (India)

Rozzano (Italy)

Mediouna (Morocco)

Lusail Doha (Qatar)

Les Diablerets (Switzerland)

Etc.

IN THE WORLD

Boulari (New Caledonia)

Goronickel (New Caledonia)

Noum éa Baie Sainte Marie

Noum éa James Cook

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CASE STUDY:LA MOREE (93), FRANCE

CONTEXT:

• Construction of a 320,000 p.e. wastewater treatment plant

• Client: Syndicat Interdépartementalpour l’Assainissement de l’agglomération Parisien (SIIAP)

• To be commissioned in 2012

Specific features of the project:

–Reinstating the Morée-Croult water mass sound ecological potential

–Producing sludge compatible with the various treatment solutions

–Creating a "zero nuisance« site–Addressing the overall costs concept–Contributing to sustainable

development

DESIGN :

• Treatment line: – Bar screen – Grit – Grease remover– Pre-treatments– Primary sedimentation without chemicals – Fine Straining– Ultrafor™

• Number of ultrafiltration cassettes: 64

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CASE STUDY:MEDIOUNA, MOROCCO

CONTEXT:

• Construction of a 40,000 p.e. wastewater treatment plant

• Client: LYDEC on behalf of the Mediouna municipality

• To be commissioned at the start of 2012

Specific features of the project:

As part of its sustainable development and resource conservation policy, the client wanted:

– a real showcase wastewater treatment plant (1st wastewater treatment plant of its type in North Africa)– to be able to make immediate use of water delivered by the Ultrafor™ for agricultural purposes

DESIGN :

• Treatment line: – 6/10mm bar screen– Grit – Grease remover– Fine Straining – Ultrafor™

• Number of ultrafiltration cassettes: 4x2

• Membrane surface area: 7,330 m2