the treatment of municipal organic waste in

8/14/2019 The Treatment of Municipal Organic Waste In

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Bioenergy 2005 Trondheim 26.10. - 27.10.2005

TheThe treatmenttreatment ofof municipalmunicipalorganicorganic wastewaste in Europein Europe byby

anaerobicanaerobic digestiondigestion

Dr.Dr.--Ing. Dieter Jrgen KorzIng. Dieter Jrgen Korz

Ros Roca GroupRos Roca Group

Plochinger Str. 3Plochinger Str. 3

DD--73730 Esslingen73730 Esslingen

www.rosroca.dewww.rosroca.de


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Classification of presentation

Introduction Ros Roca Group

AD as waste treatment technology

Classification of AD systems

Current situation of AD technologies for organic waste in Europe

Example of digestion plant for biowaste treatment, Vsteras,Sweden

Summary


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Longtime experienc e of Ros Roca

in waste treatement

Composting

Digestion


4/21Bioenergy 2005 Trondheim 26.10. - 27.10.2005

BiowasteBiowaste

(BW)(BW)Household wasteHouseho ld wa ste

(MSW)(MSW)

Orga nic frac tionOrga nic frac tion

Plastic , Metals etc .Plastic , Metals etc .

Recycling, energyRecycling, energy

productionproduction

Anaerob ic digestionAnaerob ic d igestion

Produc tion of b iogasProduc tion of b iogas

Produc tion o fProd uc tion o fheat, elec tric ityheat, elec tric ity

Prod uc tion of fuelProd uc tion of fuel

Landfill:Landfill:

Stab ilized produc tStab ilized produc t

Prod uc tion of c om post ?Produc tion of c om post ?

Prod uc tion of highProd uc tion of high

qua lity compostqua lity c ompost

Ag riculture, horticultureAg riculture, horticulture

etc.etc.

AD as waste treatment technology



Energy balance of AD

(Specifications per ton of MSW organic material)

Biogas production: 120 150 mN3/t

CH4: 55 70 Vol.-%Biogas energy content: 700 900 kWh/t

Electricity production

(Co-generation): 250 360 kWh/tElectricity consumption: 80 125 kWh/t

AD plants work energy self-sufficient with a high surplusof electric and thermal energy.



Classification of AD technologies

Partial materialPartial material flowflow digestiondigestion

PercolationPercolation systemssystems SystemsSystems withwith mechanicalmechanical solid / liquidsolid / liquid separationseparation

Total materialTotal material flowflow digestiondigestion

WetWet systemssystems (DS < 20 % )(DS < 20 % )

DryDry systemssystems (DS > 20 %)(DS > 20 %)



Input Wet DryBiowaste X X

Organic fraction MSW X X

Organic industrial waste(Food and kitchen waste,slaughter house)

X ( X )

Manure X ( X )

Sewage sludge X ( X )

Agricultural products

(Renewable raw material)

X ( X )

Waste water X -

Application areasareas forfor wetwet andand drydry ADAD systemssystems



Current digestion capacities in european countries

TheThe followingfollowing overviewoverview considersconsiders ADAD plantsplants for thefor the organicorganic

fractionfraction of MSW and BWof MSW and BW whichwhich areare underunder constructionconstruction oror inin

operationoperation inin westernwestern europeaneuropean countriescountries

SourcesSources of informations:of informations:-- TechnologyTechnology supplierssuppliers

-- PlantPlant operatorsoperators-- GeneralGeneral technicaltechnical literatureliterature

ADAD playsplays at theat the momentmoment aa minorminor rolerole in newin new easterneastern EUEU countriescountries

thereforetherefore nono detailleddetailled investigationinvestigation waswas mademade

NotNot consideredconsidered coco--digestiondigestion plantsplants ((manuremanure, biowaste), biowaste)



1.478.000

2.770.500

4.248.500

0

800.000

1.600.000

2.400.000

3.200.000

4.000.000

Total Biowaste MSW

Capacity,

t

65 %35%

Current digestion capacities for BW and MSW in AD plants

(Situation october 2005)



4.248.500

1.946.000 2.088.500

214.000

0

500.000

1.000.000

1.500.000

2.000.000

2.500.000

3.000.000

3.500.000

4.000.000

4.500.000

Total Dry Wet Others

Capacitytotal

,t

5 %46% 49%

Current digestion capacities in different AD systems for BW and MSW


C t di ti iti i diff t t i



Current digestion capacities in different european countries


0

200.000

400.000600.000

800.000

1.000.000

1.200.000

1.400.000

1.600.000

GermanySpain

FranceItaly

Netherlands

Belgium

Switzerland

Sweden

Austria UK

Portugal

Finland

Norway

Ca

pacity,

t

49 22

6 8 3 4 18 8 5 1 1 2 2

Number of plants



Example of AD plant for treatingbiowaste, silage and industrial organic

waste

The Vxtkraft digestion plant in

Vsters, Sweden



General informations about the Vxtkraft-project

Input material:Biowaste 14.000 t/ySilage 5.000 t/yGrease trap removal sludge 4.000 t/y

Main targets of the project:Closed cycle of organic material from municipalities, industrieand agricultureSanitation of organic material according to ABPR requirements1774/2002Production of biogas as fuel for city busses, refuse collectorsand private carsProduction of high quality liquid and solid fertilizer for

agricultural use

The Vxtkraft digestion plant is part of the EU Agroptigasproject (www.agroptigas.com)


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Vxtkraft digestion plant, Vsteras (Schweden)

Pretreatment of organic waste


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Heat exchanger with heat recovery Sanitation tanks

Vxtkraft digestion plant, Vsteras (Schweden)Sanitation process


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Specific requirements of ABPR 1774/2002

Temperature > 70 C

Retention time > 1 h

Particle size < 12 mm

Sanitation temperature controlled under batch conditions

Utilization of calibratable temperature sensors

No bypass possibilities

Separation in dirty and clean areas

Vxtkraft digestion plant Vsteras (Schweden)


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Vxtkraft digestion plant, Vsteras (Schweden)Digester V=4.000 m3


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Vxtkraft digestion plant, Vsteras (Schweden)

Dewatering of digestate


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Summary

AD (AD (especiallyespecially wetwet system) is a flexible technology for differentsystem) is a flexible technology for different typestypes ofoforganicorganic materialmaterial

ADAD systemssystems produceproduce renewablerenewable energyenergy fromfrom wastewaste andand cancan bebe operatedoperated

energyenergy selfself--sufficientsufficient

AD is aAD is a contributioncontribution toto substitutesubstitute fossilfossil energyenergy sourcessources and toand to reducereduceCOCO22-- emissionsemissions

BiogasBiogas cancan bebe usedused toto produceproduce differentdifferent typestypes ofof energyenergy ((electricityelectricity,, heatheat,,fuelfuel))

HighHigh qualityquality compost iscompost is producedproduced from biowaste ADfrom biowaste AD plantsplants

LandfillLandfill directivedirective:: MassMass reductionreduction forfor disposaldisposal ofof organicorganic materialmaterial

ReductionReduction ofof landfilllandfill emissionsemissions (gas,(gas, leakageleakage water)water)

AD is aAD is a longlong experiencedexperienced and welland well provenproven technology totechnology to treattreat organicorganic

wastewaste


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Thank you very much for your attention

Ros Roca Internacional, S.L.Ros Roca Internacional, S.L.

Plochinger Str. 3Plochinger Str. 3DD--73730 Esslingen73730 Esslingen

Tel. +49 711 31059970Tel. +49 711 31059970

Fax +49 711 31059979Fax +49 711 31059979EE--MailMail [email protected]

VisitVisit ourour websitewebsite::

www.rosroca.dewww.rosroca.de

the treatment of municipal organic waste in

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