2 6 john van haeff-association netherlands tcm7-1688
TRANSCRIPT
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Digestion and Composting in the NetherlandsJohn van Haeff
Dutch Waste Management Association / Attero
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Corporate social responsibility through organic
waste
• Attero• Attero Compost• Cornerstone Green energy• Cornerstone Soil fertility• Cornerstone CO 2 footprint
• Digestion & Composting, Venlo• Biogas
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Attero
• Corporate core values
• Sustainable• Innovative• Reliable• Customer-focussed
• Optimum balance betweensustainability andeconomics
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Green composting
Composting
Digestion
Organic waste: Attero in the Netherlands
Groningen
Wijster
Venlo
Deurne
Maastricht
Moerdijk
Mechelen
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Attero compost
• Reliable vegetable, fruit andgarden waste processingnetwork
• First class compost• Biomass Torch ® developer
and market leader• Developer of CO 2 calculation
tool• Digestion developer, Venlo
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65,5%
Weighted average composition of VGF waste
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1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51
o n s w e e
week number
inert (as)
vocht
organisch
VGF waste composition(annual pattern for average supply of 100 metric tons/week)
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green waste
VGF waste
organiccorporatewaste
fuel
compost
biogas
Products from waste flows
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Cornerstone Green Energy
• Biomass Torch © 10 MJ/ton
• Excellent biogas composition.• CH4 > 60 %• H2S < 100 ppm
• 2010: Attero Compost is a producer instead of a consumer of energy
• Compost from the combination of digestion and composting has a
better quality.
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Torch ® : bio fuel from VFG waste
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Cornerstone Soil fertility:
10 advantages of compost• More organic matter / better soil quality• Fewer nutrients are washed out• Soil structure improvement by better moisture balance and
improved tilling qualities• Prevention of damage due to frost• Soil life improvement, more active soil bugs• Higher crop yield and better crop quality• Less erosion• Higher disease resistance, better soil health
• Reduced greenhouse effect because carbon is bound• Peat replacement, compost in potting soil
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Soil fertility
Organische stof: voedsel voor het bodemleven
Bron: Lijbert Brussaard
Regenworm
Duizendpoot
Pissebed
Miljoenpoot
Aaltjes
Bacteriën
Schimmels
Wat is het nut van GFT-compost? Bodemleven
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Cornerstone CO 2 emission reduction
(Source: CE, IVAM, Senter Novem)
• 1 ton of VFG waste• 50 kg of CO 2 emission reduction• standard quality compost• standard applications
• CO 2 savings in the Netherlands• 1.6 million metric tons = 80,000
metric tons of CO 2 (ref. 2007)
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CO2 saving potential
Measur e CO 2 saving
Composting (traditional) 50 kg of CO 2 eq
Addi t iona l
Bio fuel (Torch®
)Digestion (electric power)
Peat replacement
Heat utilization
Transport fuel
up to 30 kg of CO 2 eq extraup to 100 kg of CO 2 eq extra
up to 120 kg of CO 2 eq extra
optional
optional
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Digestion / composting pilot plant, Venlo
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Biological basics of digestion / composting Venlo
Acidogenesis
Acetogenesis
Methano-genesis
Hydrolysis
Fatty acidsAlcohols
Acetic acid
Methane
SugarsAmino acids
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Digestion / Composting Venlo
VGF
Blending
Hydrolysis
BlendingShreddering
Composting
Sanitation
Post treatment
Recirculationtank
Blending tank UASBReactor
WKK800 kW
Heat
Electricity
VGF
Blending
Compostingphase 1
Shreddering
Compostingphase 2
Sanitation
Post treatment
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Reactor
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Total energy system
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Development of biogas• Roll-out of local green electricity / gas sites supplied with local
municipal organic waste
• Roll-out of green electricity / gas certificates for municipalities tofulfil municipal sustainability ambitions
• Roll-out of network of digesters in the Netherlands• Trend to convert composting plants into combined digestion /
composting plants.
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Certification• Green Gas certificates
• Instruments to assign waste flows per municipality to theirsustainability performance
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Conclusions• The combination of digesting and composting is both technologically
and economically feasible
• Biogas of a fine quality• Green energy reinforces C2C• Biogas and compost are complementary
• The need for Bio Waste and Soil Directives is and remains evident.