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Minimax ProgrammeMinimax Programme

DifferentiatingDifferentiating Solutions forSolutions for

SludgeSludge TreatmentTreatment inin thethe

FoodFood && BeverageBeverage industryindustry

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Key DriversKey Drivers

z Legislative Requirements

z Product recycling & valorization

\ Agricultural (SEDE)

\ Other valorization

z Price competitiveness

z Health and Safety: public reluctance

\ Sanitary aspects: Mad-Cow Disease (BSE), Dioxins,

pesticides,

\ N.I.M.B.Y syndrome : odours

Regard sludge as

added value product ,not as disposal waste

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Minimax programme:Minimax programme: thethe argumentsarguments

Thanks to MiniMax, VEOLIA WATER is the best

partner to help making long term responsible

decisions :

1. Take optimal action on the wastewater treatment

train by reducing sludge volume

2. Maximize health safety and sludge quality for a

safe recycling and valorization

3. Minimize odourproblem

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DisposalDisposal routesroutes andand adaptedadapted sludgesludge treatmentstreatments

Food & Beverage Industry = Organic Sludge / light pollution

Valorization in Agriculture Landfilling and other valorizations

1) Dewatering

2) Composting / Liming

3) Treatment at the source:hydrolysis / sludge methanisation

4) Drying

1) Drying

2) Incineration

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SpecificSpecific MinimaxMinimax offeroffertoto thethe F&BF&B

Liquid Stabililzation

Chemical: liming

Biological: methanization

Thickening

Incineration

PYROFLUID

BIOCON

VALORIZATION

IN

AGRICULTUREDewatering

Pasty stabilization

chemical: liming

biological: COMPOSTING

Drying: BIOCON

Raw Sludge

Wet Air

Oxidation

(W.A.O)

BIOTHELYS

LANDFILLING

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44 ClassicalClassical treatmentstreatments forfordewateringdewatering

1) Dewatering Table

2) Belt Press

3) Centrifugation

4) Filter Press

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COMPOSTING (SEDE)COMPOSTING (SEDE)

Principle

Aeration of sludge mixed with other organic products, during

several weeks

+ -

Stabilisation

Hygienisation

Drying (60% dryness)

No need for energy

Large surface area required

Needs for maintenance

Needs for commercializing the compost

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BIOTHELYSBIOTHELYS (1)(1)

Principle Increase in pressure (15 bar) and temperature (175C)

Hydrolysis + Biological Treatment

Gas Exit

Exchanger

BIOTHELYS

Thickened sludge

W.A.O Reactor

(175C; 15 bar; 45 min.)Centrifugation

Fiber

sludge

Thickening

Diluted sludge

Dry Gas

Condensate

Centrate

Sludge blow down

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BIOTHELYSBIOTHELYS (2)(2)

+ -

Only process to reduce SS

(until 50%)

Hygienisation

Volume reduction until 75% due to

increase in dryness

Needs for energy and steam

Sludge must be thickened before

entering the system

COD returns to the biological

tank

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BIOCONBIOCONdryerdryer (1)(1)

Principle: Indirect drying process on two moving belts bearing the sludge

Thicked sludgebiosolids : 17 30%

Wet air

towards

condenser

Air

Hot dryer

Temp.: 180 140C

Hot oil

Hot water Temp.: 85C

MS: 50 60%

Dried sludge

biosolids > 90%

1 hour treatement

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BIOCONBIOCONdryerdryer (2)(2)

+

-

Production of pellets up to 90% dryness

Use of all energy sources (Biogas, fuel) No odour emission

Indirect heating of drying air

Low drying temperature Continuous or non continuous process

Higher energy consumption than direct drying

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PyrofluidPyrofluidincineratorincinerator

flue gas

fluidisation airwet sludge

arch

freeboard

Sand fluid bed

duct

cooling water

refractory lining

fuel

wind box

+ Low maintenance

Easy to operate

Long life expectancy

No dioxin mission

In accordance with gas treatment

regulations

C l tC l t Mi iMi i ffff ll i l di l d

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CompleteComplete MinimaxMinimax offerofferalsoalso includesincludes

z Athos: Wet Air Oxidation (W.A.O.)

Thermal oxidation without smoke treatment required

z Saphyr: thermal dewatering

Sludge stabilization and odour reduction

z Aquilair and Alizair: physico-chemical and

biological odour treatments

z Solia : solar drying with aerobic fermentation

NEW

C t tContacts dand t ltools

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ContactsContacts andand toolstools

z Jean Pierre Levasseur (Sludge department)

z D. Cretenot (Sludge department)

z

Philippe Mouroux (Industrial Water department)

z Tools available:

Minimax posters presenting all VWS sludge treatmentproducts

Biocon CD-Rom

Athos CD-Rom

Brochures: sludge management