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HIGHHIGH STRENGTH WASTESTRENGTH WASTE

WATER TRETMENT BYWATER TRETMENT BY

ANAEROBIC HYBRIDANAEROBIC HYBRIDREACTOR WITH ENERGYREACTOR WITH ENERGY

EXTRACTIONEXTRACTIONPrepared by :-

Satani Nitin

Guided By:-

N.M.Suchak

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INTRODUCTIONINTRODUCTION

Priliminary TreatmentPriliminary Treatment

Primary TreatmentPrimary Treatment

Secondary TreatmentSecondary Treatment

Tertiary TreatmentTertiary Treatment

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What materials have to be removed fromWhat materials have to be removed from

waste water?waste water? Soluble organicsSoluble organics

Heavy Metal ionsHeavy Metal ions

Acidity and alkalinityAcidity and alkalinity

Oils,Greases and other floating materialsOils,Greases and other floating materials

NutrientsNutrients

Suspended and colloidal solidsSuspended and colloidal solids

Colour, TurbidityColour, Turbidity

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Types of Anaerobic processTypes of Anaerobic process

Suspended Growth :Suspended Growth :Anaerobic DigestionAnaerobic Digestion

Anaerobic Contact processAnaerobic Contact process

Upflow Anaerobic Sludge BlanketUpflow Anaerobic Sludge Blanket

Attached Growth :Attached Growth :Anaerobic FilterAnaerobic Filter

Expanded BedExpanded Bed

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REACTOR CONFIGURATION OF ANAEROBIC TREATMENT

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Detail of ReactorDetail of Reactor

Down flow reactorDown flow reactor

Upflow reactorUpflow reactor

Sludge bedSludge bed

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Anaerobic Hybrid ReactorAnaerobic Hybrid Reactor

FundamentalsFundamentals ::--

TheThe conceptconcept ofof highhigh--raterate AnaerobicAnaerobic ReactorReactor isis basedbased onon threethree fundamentalfundamentalaspectsaspects::

((11)Accumulation)Accumulation withinwithin bebe reactorreactor ofof biomassbiomass byby meansmeans ofof settlingsettling andandattachmentattachment toto solidssolids.. SuchSuch systemssystems allowallow thethe retentionretention ofof slowlyslowly growinggrowingmicroorganismsmicroorganisms byby ensuringensuring thatthat thethe meanmean solidssolids retentionretention timetime becomesbecomesmuchmuch longerlonger thanthan thethe meanmean hydraulichydraulic retentionretention timetime..

((22)Improved)Improved contactcontact betweenbetween biomassbiomass andand wastewaste water,water, overover comingcoming

problemsproblems ofof diffusiondiffusion ofof subtractssubtracts andand productsproducts fromfrom thethe bulkbulk liquidliquid totobiofilmsbiofilms oror granulesgranules..

((33)Enhanced)Enhanced activityactivity ofof thethe biomass,biomass, duedue toto adoptionadoption andand growthgrowth..

Anaerobic Hybrid Reactor incorporates all the three design featuresAnaerobic Hybrid Reactor incorporates all the three design featuresdescribed above necessary for high rate anaerobic treatment.described above necessary for high rate anaerobic treatment.

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Anaerobic Hybrid Reactor DiagramAnaerobic Hybrid Reactor Diagram

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Flow DiagramFlow Diagram

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Anaerobic Hybrid Reactor AdvantageAnaerobic Hybrid Reactor Advantage

Process stabilityProcess stability

Low Sludge productionLow Sludge production

Nutrient RequirementNutrient Requirement

Tolerance to Shock LoadingsTolerance to Shock Loadings

Tolerance to Widely Varying Influent pH ConditionsTolerance to Widely Varying Influent pH Conditions

Energy ConsumptionEnergy Consumption

Methane ProductionMethane Production

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Characteristics of Anaerobic HybridCharacteristics of Anaerobic Hybrid

ReactorReactor

HighHigh biomassbiomass concentrationsconcentrations andand longlong SRTsSRTs achievableachievable..

SmallerSmaller reactorreactor volumevolume duedue toto highhigh organicorganic loadingloading ratesrates..

StableStable operationoperation underunder variablevariable feedfeed conditionsconditions oror toxictoxicshocksshocks..

NoNo mechanicalmechanical mixingmixing requiredrequired..

BiogasBiogas evolutionevolution andand effluenteffluent recyclerecycle insureinsure relativelyrelatively uniformuniformtemperature,temperature, pH,pH, andand substratesubstrate concentrationsconcentrations inin reactorreactor..

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Sewage Treatment

Industrial canteen waste

Dairy and dairy products

Sugar

Brewery and distillery

Starch and liquid glucose

Vegetable oil and fatty acids

Vegetable and fruit processing

Food processing

Abattoir and meat processing

Tanneries Paper and pulp

Chemical and petrochemical

Refinery

Pesticides and insecticides

Pharmaceuticals and bulk drugs

Anaerobic Hybrid Reactor Industrial

Applications

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Energy ExtractionEnergy Extraction

Methan gas generationMethan gas generation

Utillzation of BioUtillzation of Bio--gasgas

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SUMMARY

The anaerobic process most of the chemical energy in the organic

matter is retained in the form of methane gas, which leave the system.

The most commonly used reactor configurations for anaerobic

treatment are down flow and up flow fixed film and up flow

anaerobic sludge blanket reactors.

Limited amount of energy is available for cell growth resulting in low

growth rates and low sludge prioduction

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REFERENCESREFERENCES

Matcalf &Matcalf & EddyEddy WASTEWATER ENGG.WASTEWATER ENGG.

S.V.S.Sudhakara RaoS.V.S.Sudhakara Rao Chemical Engg.WorldChemical Engg.World

vol XXXIV no 5 may 1999vol XXXIV no 5 may 1999

Dr.J.A.DudhabhateDr.J.A.Dudhabhate Chemical Engg.WorldChemical Engg.World

vol XXXV no 10 oct 2000vol XXXV no 10 oct 2000

Reshmi MenonReshmi Menon Chemical Engg.WorldChemical Engg.World

Aug. 2002Aug. 2002 www.google.comwww.google.com

www.yahoo.comwww.yahoo.com

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THANK YOUTHANK YOUTHANK YOUTHANK YOU