Example of water treatment plants - University of Belgradewater-environment.vin.bg.ac.rs/presentations/banja/Schrotter/2... · 2 Jean-Christophe Schrotter TRANSPORTS SERVICES ENERGETIQUES

TRANSPORTS PROPRETE EAUSERVICES ENERGETIQUES

Example of water treatmentplants

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Jean-Christophe Schrotter


Membrane development over the last 15 years in Veolia

1989 :MF ceramic1st drinking water(2000 m3/d) St Maurice les Chateauneufs (France)

2002 : MF(126 000 m3/d)Bendigo (Australia)

1997 : BIOSEP1st MBR

1999 :NFNanofiltration (140 000 m3/d)Méry/Oise (France).

Sept 2005 :OI(326 000 m3/d)Ashkelon (Israel)

2000 : UF(160 000 m3/d) ClayLane (UK) 2003 : ARAMIS

Membrane center of expertise

2003 : MBR(40 000 m3/d)Noord Canal (Germany)

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Examples of membrane integration in process train

Raw water

Drinking water

Disinfection+ pesticides

+ nitratesClarification +disinfection

Pump

CoagulationFloculation

Post treatment

Raw Water

Drinking Water

Disinfection+ pesticides

Pump

Settler

Post treatment

Raw water

Drinking water

Microfiltration


GAC

Ultrafiltration

Pump


settler

Sand filtration

Post treatment

Nanofiltration

Ozone

Ozone

Filtration GAC

Drinking water

Raw water

Pump


settler

Sand Filtration

Post treatment

Reverse Osmosis

Desalination

Typical Process trains for drinking water production

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Example for Clarification / Disinfection :Yvetot (Site de Héricourt) - France

Karstic water treatment :• Turbidity removal• Bacteries removal

Plant capacity:•5 000 m3/ d• membrane area : 2 x 1 350 m2

• operated since 1997 by Veolia Water

Pump


Post treatment

Raw water

Microfiltration

Drinking water

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Example for Clarification / Disinfection :Coliban - Australia

Coliban :• 126 000 m3/d in Australia,• in operation since April, 2002• Immersed Membranes (cmf-s) operated by

Veolia Water• Main Objectives: clarification and disinfection

Pump


Post treatment

Raw water

Microfiltration

Ozone

Filtration GAC

Drinking water

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Pump

Post treatment

Raw water

Drinking water

GAC

Ultrafiltration

Ozone

example disinfection + pesticides : Clay-Lane (UK) :

CAG + UF on groundwater -• Objective : Pesticides + Cryptosporidium• Capacité : 160 000 m3/j• Ozone + GAC for pesticides (1996)• UF for Cryptosporidium• Operated since Feb, 2001 by Veolia Water

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example disinfection + pesticides + nitrates : Magenta (F)

• Removal of DOC, nitrate and pesticides with NF • Physical Disinfection•Removal of turbidity• Capacity 2600 m3/d• Operated since 2000 by Veolia water

Raw water Treated w

Average turbidity

NO3 : Average

18 NTU 0,1 NTU

37 mg/l 12 mg/l

Max. turbidity

NO3 : maximum

82 NTU 0,26 NTU

52 mg/l 18 mg/l

Raw water

Drinking Water

Pump


settler

Sand filtration

Post treatment

Nanofiltration

Cart. filter

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Example disinfection + pesticides + nitrates : Méry sur Oise (F)

• Main objectives: BDOC removal, pesticides removal, partial softening

• 140 MLD, operated by Veolia Water since 1999

• World ’s largest nanofiltration plant for surface water

• NF 200 membrane, jointly developed with DOW

Raw water

Drinking water

Pump


Settler

Dualmediafilter

Post treatment

Nanofiltration

Ozonation

Card. Filter

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Example of desalination plant : Ashkelon (Israel)

Raw water

•Water desalination (TDS < 300 mg/l)• Bore < 0,4 mg/l• Physical disinfection• capacity 326 000 m3/j• Operated since sept 2005 by Veolia water/IDE

Drinking water

Pump

Coagulation

Dualmediafilter

Post treatment

Reverse Osmosis

Cart. Filter

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Design - Reverse Osmosis

4 pass RO design1st pass 45% recoveryPart of first pass permeate is fed to the final permeate2nd pass

85% recoveryHigh pH for boron removalantiscalantPermeate from 2nd pass is part of final product

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Design – Reverse Osmosis

Brine from 2nd pass feed to 3rd pass3rd pass –

85% recovery Low pH

4th pass treats permeate from 3rd pass to remove any remaining boron4th pass

90% recoveryHigh pHAntiscalantPermeate part of

final product

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Design – Reverse Osmosis

Number of RO trains32 for 1st pass8 for 2nd pass2 for 3rd and 4th

passesMembrane elements

25,600 SWRO type15,600 BWRO typeDow Filmtecmembranes

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Design – Process Schematic

Boosters10x

DWEERS40x

Drain

Membranes 2nd stage

H2SO4Membranes 3rd stage

Antiscalant

Degasifier

DegasifierTo client

3000 m3

Membranes 1st stage16 trains

IntakeNaOCl

H2SO4

Dual media Filters

Micronic Filters6x

Boosters3x

Boosters4x

NaHSO3

Micronic Filters8x

FeCl3 Polymer

NaOH

AntiscalantNaOH

NaOHNaOCl

Filtered water tankBackwash pumps

Air blowers

HP pumps4x

4x3 trains

1 train2/1

2/2

3/1

3/2

2x

2x

1 train

1 train

4/2

4/12x

20 filters

Static mixer

3x

3x

2x

Ashkelon desalination plantProcess diagram

Limestonefilters

6x

Backwash tank

Membranes 4th stage

NaOClH2SO4

Air blowers2x


Perthes en Gatinais

Example of MBR : the Biosep process

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TECHNOLOGY of the BIOSEP PROCESS

Treated water( permeate )

Sludge extractionpump

Rawwaste water

To sludge dewatering

Air Blower

Fine screening1-2 mm

Permeate/Backwashpump

Permeatetank

BiologicalActivated Sludge

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BIOSEP® – Perthes en gatinais

Water Quality

Parameters Unit Raw water Moy Min Max

Treated water Moy Min Max

COD mg/l 448 231 549 26.5 5 40BOD5 mg/l 198 144 238 ≤ 5 ≤ 5 ≤ 5SS mg/l 224 97.5 334 ≤ sd ≤ sd 5NT mg/l 42.6 25.9 66.7 7.8 5.2 21.3N-NH4 mg/l 33.1 24.3 43.2 0.6 0.0 2.2N-NO2 mg/l 0.1 0.0 0.6 0.0 0.0 0.0N-NO3 mg/l 0.2 0.0 1.1 6 3.2 21.2Pt mg/l 9.1 7.8 10.7 0.3 0.1 0.9

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Cooperl, 2003, Reuse treatment in F&B with BiOSEPTM and RO producing1000 m3/d (2003)

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NH3

Cl2

TDS = 800 mg/L

TDS < 50 mg/L

Industrial Customers

BNRBiological Nutrient Removal

Tertiary Filtration

Ocean OutfallUV

Wollongong Clarificationand SedimentationPrimary Screening

RO Units

MF Backwash

Product Water

Microfiltration

Illawarra NSW, Design Build, 2004IllawarraIllawarra NSW, Design Build, 2004NSW, Design Build, 2004

uv

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Kwinana Water Reclamation Plant Case Study (2004)Using a sophisticated dual-membrane technology

ObjectiveRecycling wastewater from Perth’s Woodman Point Waste Water Treatment Plant for industrial reuse

Capacity16,700 m3/day and upgradableto 26,700 m3/day

TechnologyDual-membrane technologymicrofiltration (submerged continuous microfiltration CMF-S) and reverse osmosis

Quality of waterHigh quality treated water will be used by industrial customers: TDS guaranteed by Veolia: 50 mg/L

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Kranji Plant (53 000 m3/d)

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upgrading of

biological process

intermediate

secondary

pumping

Ballasted Settling

(ACTIFLO®)

Filtration

(HydrotechDiscfilter)

UV secondary disinfection

post secondary disinfection

micro-filtration

reverse osmosis

oxygen saturatio

n

2500 m3/dayAquifer recharge to avoid salt-intrusion

172,800 m3/dayecological flow of Llobregat river

64,800 m3/dayirrigation of farm areas

34,560 m3/day recharge of wetlands

The biggest municipal wastewater reuse plant in Europe

Barcelona50 millions m3/year

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Direct drinking water production : Windhoeck Plant (Namibia)

Pre O3 coag flottation filtration ozonationfloc

UF membranes GAC BAC

H2O2KMnO4

Cl2 NaOH

DAM

WWTP

O3

21 000 m3/d

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Windhoeck

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KEY OPERATING LESSONS

• Adequate training and operating procedures are essential (keypossible failures, cleaning, recommended first actions)

• Need for operator-support tools to help develop a continuousdiagnostic of the hydraulics/behaviour of the plant and anticipate problems ASAP (smart but robust interface betweensupervision and operators)

• Access to strong chemical/biochemical analytical backup possible fouling/cleaning diagnostic (some applications are tough!)

• Integration of Membrane operations into global water and waste operating scheme (sludge disposal, pre-treatment, pollution prevention plans as well as possible process water segregation)

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CONCLUSIONS :

Membranes and Membrane Processes are not Magical!! Their implementation at very large scale still representsan unacceptable level of technico-economical risk todayfor some applications.

The challenge : Find the right place for these tools into our toolbox, develop the right process trains for each application, develop robust adapted operating practices, minimizing technical and financial risks

Membranes need to be forgotten, or seen as only part of the treatment solution in order to gain full potential in Water and Wastewater Treatment

Think and focus on treatment train rather than individual processes !

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Thank you

[email protected]

Documents

Example of water treatment plants - University of Belgradewater-environment.vin.bg.ac.rs/presentations/banja/Schrotter/2... · 2 Jean-Christophe Schrotter TRANSPORTS SERVICES ENERGETIQUES