Memthane ® Anaerobic MBR -

weitestgehende anaerobe Abwasserbehandlung

München – 10. Oktober 2012

PTS – Betrieb biologischer Abwasserreinigungsanlagen

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Contents

1. Introduction Biothane

2. Drivers for AnMBR

3. Novel Memthane® technology

4. Case studies

5. Conclusion

Biothane: competence centre of Veolia Water

Veolia Water • Revenues 12.6 bln€; 69 countries; 97,000 employees

• Drinking water for 103 mln consumers; sewage of 73 mln inhabitants

Veolia Water Solutions and Technologies (VWS) • Contracting and equipment; 250 proprietary technologies

• Revenue 2.6 bln€; 135 business units; 10,000 employees

Biothane • Experts for Anaerobic industrial wastewater treatment

• 35 years of experience with app. 540 references were established

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Biothane Granular Technologies

Biothane UASB • Granular Sludge Bed

• Up to 12 kg COD/m3/d

Biobed® EGSB • Granular Sludge Bed

• High Rate Process

• Soluble COD removal

• Up to 25 kg COD/m3/d

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Biothane Non-granular Technologies;

Biobulk CSTR • Solid waste digestion

• With our without sludge recirculation

• Suitable for high COD / SS / FOG waste (water)

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Upthane™ • Municipal UASB technology for

tropical climates

• Novel design

Memthane ® Anaerobic MBR • New technology for high strength wastewater

• Using Cross-flow UF membranes

• High COD / SS removal efficiencies

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From wastewater treatment plant to Bio-Refinery…

AWWTP Wastewater Water for reuse

Energy in Biogas

Nutrients for fertilizer Residue

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Drivers for Anaerobic MBR

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Drivers for Anaerobic MBR (1)

Specific wastewater characteristics

FOG (Fat, Oil & Grease) and LCFA (Long Chain Fatty Acids)

• Hamper granulation in UASB or EGSB

High concentrations (COD + salts); e.g. Whey & Thin Stillage

• Un-diluted: no granulation in UASB due to high HRT, salts

• Diluted: too large UASB reactor volume

• Solution often low loaded CSTR systems

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Drivers for Anaerobic MBR (2)

Higher loading rate in CSTR digester achieved by

• Uncoupling of HRT and SRT by use of membranes

Higher COD removal efficiencies & clear effluents

• Smaller post treatment; more compact & less energy consumption

• Higher digestion efficiency, more biogas

• Effluent free of suspended solids; easy nutrient recovery

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Memthane® - Market positioning

COD

Susp

en

ded

So

lids

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Novel Memthane® technology

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Memthane® - step-by-step

Conditioning of high- strength wastewaters.

Influent is fed to the anaerobic bioreactor where the organic components are converted into energy-rich biogas.

Cleaning In Place (CIP)

After anaerobic treatment, the UF membrane unit separates the clean permeate from the biomass.

If required, several polishing techniques are available to further treat the suspended solids free effluent for reuse or recovery of nutrients, while the low COD permeate is often clean enough for direct discharge to sewer.

Biomass is returned to the bioreactor, while a small amount of biomass is removed from the system and discharged after dewatering.

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Memthane® - Features

Treat high-strength effluent previously considered untreatable • High concentrated streams : COD 20,000 – 250,000 ppm

• Superb effluent quality

• Create product for nutrient recovery (N+P)

Maximize renewable green energy production • Generates biogas from wastewater

• Minimizes carbon footprint and water footprint

Remove COD efficiency: > 98% • Avoids / reduces costly aerobic post treatment

• Generates more biogas

Reduced OPEX • Reduces disposal costs while generating biogas

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Memthane® - Technology (1) Mechanically Simple & Reliable

• All streams fully contained to eliminate odor (pressurized design)

• Cross-flow UF membranes; fully accessible for maintenance

• Sustainable flux rate – automated & controlled cleaning regime

Membrane fouling controlled by • Reactor design; stratified mixing (patented Design)

• Proven tubular UF cross-flow (X-Flow Pentair)

• Selective removal inorganic precipitation (patented Design)

Robust control • Robust in handling COD and hydraulic peaks

• Short startup; function of seed culture volume

• Stable biomass; 100% retention

• Automated control (load, pH, Temp, Foam)

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Memthane® - Technology (2) Minimal Operational Expenses • Maximum Energy Production (98% COD conversion)

• Biodegradation complex COD due to controlled SRT (> 100 days)

• Lower chemical consumption; less soda for pH correction

• Low Sludge Production (0 – 3% due to long SRT)

• Excellent Final effluent quality (High) Removal Efficiency (TSS ~ 0 ppm) and (COD removal > 98% in 1 stage)

• Easy downstream nutrient recovery and water re-use

Compact installations • High volumetric loading rates

• Substantial savings in posttreatment

• Anaerobic + Aerobic = Memthane®

2 processes combined in 1

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Memthane® - Performance Characteristics

Input COD : > 20 ~ 250 g/l

• FOG : up to 10 g/l

COD Loading rate : 5 - 10 kg/m3*d

Sludge concentration : 20 – 30 kgVSS/m3

Sludge retention time : 20 - 50 d

Membrane Flux : 10 – 20 lmh

COD removal efficiency : >98 ~ 99.5 %

Effluent COD : < 200~500 mg/l

Effluent TSS : < 1.0 mg/l

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Memthane® - Applications (so far)

High concentrated streams (COD 20,000 ~ 250,000) such as

Dairies

• Whey, Milk Processing

Ethanol Facilities • Pot Ale, Spent Wash, (Thin) Stillage and Vinasse

Food wastewaters with Fat, Oil and Grease (FOG) • Ice cream

Wastewaters containing high COD • Bio-ethanol, Biodiesel, Chemical wastewaters

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Memthane® - Track record

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Proven Innovation • 6 full-scale Memthane® plants contracted

• 4 years of full-scale industrial operation

• 14 pilot plant tests in operation or finalized

Implemented in: • Dairy industries

• Bioethanol plant

• Cellulosic Bioethanol plant

• Biodiesel plant

• Food processing

Case studies for Memthane® technology

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Dairy in US – Wastewater situation in 2005

(NOT a Biothane reference, but the bases on all further developments)

Acid whey byproduct and other wastewaters

• Flow > 190 m3/d

• COD > 20,000 ‐75,000 mg/l

COD load > 10,000 kg/d

• TKN > 230 mg/l

• TP > 500 mg/l

• Ca > 200 mg/l

• TSS > 3,000 mg/l *

Dairy in US – Wastewater situation in 2005

Evaluation of existing anaerobic technologies to dairy applications seemed problematic • Efficiency, Reliability, Odour

Low rate systems • Very large

• Decent but still high strenght effluent

High rate systems • Decent but still high strength effluent

• Process sensitive

• Unacceptable recovery times from upsets

AnMBR selected

Dairy in US - Full scale

Beta-scale plant in 2007

Expanded to full-scale in October 2009

Additional digester

Additional X-flow membranes

Beta-Scale reactor

Operation:

• 170 m3/d through X‐flow

• 27 m3/d in Membralox

Influent COD is 62,000 mg/L

Average 8 day digester detention

Correlates to an organic loading range of 5‐8 kg COD/(m3.d)

So far the process has operated identical to beta system

COD removal rates since full scale startup remain around 99.5%

Dairy in US - Full scale

Dairy in US - Full scale

4500 kg/d

9000 kg/d

Dairy in US – Wastewater situation in 2009

Anaerobic MBR permeate

• Flow > 180 m3/d

• COD < 300 mg/l

COD load < 54 kg/d

• TKN < 100 mg/l

• TP < 50 mg/l

• Ca < 25 mg/l

• TSS < 1 mg/l

Acid whey plus ww

• Flow > 190 m3/d

• COD > 20,000 ‐75,000 mg/l

COD load > 10,000 kg/d

• TKN > 230 mg/l

• TP > 500 mg/l

• Ca > 200 mg/l

• TSS > 3,000 mg/l *

Thank you for your attention For further information or questions Please contact: Erik Draber - Senior Account Manager at Biothane erik.draber@veoliawater.com or your local VWS Business Unit (for Germany: Aquantis GmbH, Ratingen)

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