2 6 John Van Haeff-Association Netherlands Tcm7-1688

8/17/2019 2 6 John Van Haeff-Association Netherlands Tcm7-1688

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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.

2 6 John Van Haeff-Association Netherlands Tcm7-1688

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