REUSE OF WASTE WATER FOR MEGA CITIES

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REUSE OF WASTE WATER FOR MEGA CITIESFRANS KNOPS

CONTENTS

• Introduction• Applications• Wastewater treatment• Ultrafiltration• Case studies• Future trends• Conclusions

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Membrane Production Plant in Enschede

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Headquarters in Enschede

System Construction Plant in Almelo

KEY TO SUCCESS

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INTEGRATED KNOW HOW CENTRE

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One location with Projectmanagement, Mechanical&Electrical engineering, Process Engineering, Automation, Operations, Commissioning and Service (> 100 employees).

OPERATIONS

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3500 m2 state-of-the-art factory produces and pre-fabricates skid constructions

AFTER SALES SERVICE

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Pentair X-Flow Market leader in UF/MF

WORLD’S NO. 1 UF/MF COMPANY

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Source Global Water Intel May 2011

ULTRAFILTRATION APPLICATIONS

WWTP

Potable waterproduction

UF RO

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Surface waterGround waterSeawaterEffluent reuse

production

FILTRATION TECHNOLOGIESMediaFiltration10 – 100 micron

UltraFiltration0.01 – 0.1 micron

ReverseOsmosis< 1 nm

MicroFiltration0.1 – 10 micron

SettleableSolids

colloidsVirusesLarge organics

colourhardnessPesticidessalts

SuspendedSolidsbacteria

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SuspendedSolidsmicrobiologyhardness pesticides saltswater

colour hardnesspesticidessaltswater

water

colloids virusesLarge organicshardness pesticides saltswater

URBAN SECTOR APPLICATIONSREUSE APPLICATIONS IN MUNICIPAL AND INDUSTRIAL ENVIRONMENT• Application / use Landscaping

Non potable domesticAquifer recharge / indirect reuseCommercial / light industrialFire fightingPretreatment for high grade (RO / IX)

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ADDED VALUE ULTRAFILTRATION• Microbiological safety• Small footprint• Regrowth potential• Better performance of RO and IX

ULTRAFILTRATION MEMBRANE

~14.600 fibers0.8 mm PES

8” module 0.8 mm (55 m2)

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6 corrugated plates:à optimal

hydrodynamics

Nominal pore size 20 nm

HOW EFFECTIVE IS UF?

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UFCXiga & Aquaflex

MEMBRANE PROPERTIES - POLISHINGX-FLOW ULTRAFILTRATION MEMBRANE MODULE• Complete removal of suspended solids• Partial removal of dissolved organics (enhanced by coagulation)• Removal of micro-organisms:

> 6 log bacteria, cryptosporidium and giardia> 4 log viruses

• 55 m2 of membrane area

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Pentair X-Flow Global references

Reuse applications in Megacities

MELBOURNE

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MELBOURNEEASTERN IRRIGATION SCHEME ULTRAFILTRATION SKIDS

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MELBOURNE

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MELBOURNEFACTS AND FIGURES• Location Melbourne, Australia• Design UF product flow rate 1,250 m3/hr• In operation since March 2005

• Application Unrestricted reuseGardeningCrop growing / leafy vegatablesIrrigation golf courses

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Irrigation golf courses

Small scale reuse

BEIJINGBACKGROUND• Sun Palace Power Plant• 2 X 350 MW + district heating• Make up water for heating circuit + boiler feed• Source Jiuxianqiao Waste Water Treatment Plant• Pre-treatment self cleaning strainer• Post treatment:

‐ RO (make up water)

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‐ RO (make up water)‐ 2 pass RO + IX (boiler feed)

BEIJING

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BEIJINGFACTS• Location Beijing, China• Design UF product flow rate 135 m3/hr• In operation since October 2007

• Application Pretreatment reverse osmosisBoilerfeedDistrict heating

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Small scale reuse

BEIJINGQINGE MUNICIPAL WASTE WATER TREATMENT PLANT

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BEIJINGQINGE MUNICIPAL WASTE WATER TREATMENT PLANT

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BEIJINGFACTS• Location Beijing, China• Design UF product flow rate 7,500 m3/hr• Planned start up 2012

• Application LandscapingCommercial

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Large scale reuse

DOHA NORTH

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DOHA NORTH

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DOHA NORTHFACTS• Location Doha, Qatar• Design UF product flow rate 18,300 m3/hr• Planned start up 2012

• Application Domestic non-potableLandscapingCommercial

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Large scale reuse

DOHA SOUTHFACTS• Location Doha, Qatar• Design UF product flow rate 8,500 m3/hr• Planned start up 2013

• Application Domestic non-potableLandscapingCommercial

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Large scale reuse

INDIA – MULTIPLE PROJECTSLOCATION GURGAON• Project DLF housing properties• Design UF product flow rate 375 m3/hr• Application Landscaping

Irrigation

LOCATION MUMBAI• Project Mumbai International Airport

Design UF product flow rate 200 m3/hr

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• Design UF product flow rate 200 m3/hr• Application Non potable (toilet flushing & floor washing)

Irrigation

LOCATION COUNTRY WIDE• Project Petrochemical complexes (7 total)• Design UF product flow rate 4,620 m3/hr• Application Industrial (boilerfeed)

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KUWAIT

RawWastewater

SecondaryClarifiers

ARDIYA

Screens Extended Grit& Fog Removal

Sludge

AerobicChamber

AnaerobicChamber

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RO

Brine

ChlorinationContact Basin

PurifiedWater

SludgeDisposal

Buffertank

MicroStrainers

Bufferingtank UF

CO2 Stripping

HPP

KUWAIT

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KUWAITFACTS AND FIGURES• Location Sulaibiya, Kuwait• Design UF product flow rate 15,600 m3/hr• In operation since November 2004

• Application LandscapingIrrigationCommercial

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Large scale reuse

KUWAIT

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KUWAITFACTS AND FIGURES• Location Shuwaikh, Kuwait• Design UF product flow rate 6,500 m3/hr• In operation since 2011

• Application Potable water

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Large scale desalination

KUWAIT

WWTP

UF

RO

RO

UF

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Holistic approach to lower overall energy consumption

Seawater 4 kW hr / m3Effluent reuse 1 kW hr / m3

ROUF

Total 5 kW hr / 2m32.5 kW hr / m3

WINDHOEK

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WINDHOEK

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WINDHOEK

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WINDHOEKFACTS AND FIGURES• Location Windhoek, Namibia• Design UF product flow rate 850 m3/hr• In operation since 2002

Expanded to 1000 m3/hr in 2008

• Application Potable water

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Direct reuse as potable water

CONCLUSIONS• Currently over half of the world’s population lives in urban areas

Urbanisation and industralisation are linked

• Increased stress on water supply

• Increased stress on waste water treatment

• Waste water reuse is a sustainable solution for both problemsReducing the use of potable water for non-potable applicatons

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Reducing the use of potable water for non-potable applicatonsIndirect reuse

• Future trendsHolistic approach: water mapping, urban planningDirect reuse

QUESTIONS?

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QUESTIONS?

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