High Solids AD Integrated Into Composting Footprint

In 2014, the municipalities that own the plant decided to restructure the business with a particular focus on energy, increasing the range of waste accepted, improving product quality, enhancing site environmental protection - particularly in terms of allowed greenhouse gas emissions as methane slip...

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Bibliographic Details
Published in:BioCycle 2018-01, Vol.59 (1), p.59-62
Main Author: Szmidt, Robin
Format: Magazinearticle
Language:English
Subjects:
Agricultural production
Biogas
Brand loyalty
By products
Composting
Efficiency
Emission standards
Energy
Fertilizers
Food
Food waste
Heat
Heat recovery systems
Liquid fertilizers
Market positioning
Particle size
Product quality
Raw materials
Recycling centers
Salmonella
Winter
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Summary:In 2014, the municipalities that own the plant decided to restructure the business with a particular focus on energy, increasing the range of waste accepted, improving product quality, enhancing site environmental protection - particularly in terms of allowed greenhouse gas emissions as methane slippage - and integrating the site with other energy interests of the management group. Irrespective of markets for the fertilizer-rich liquid, local regulations and the reality of a cold winter climate mean that the site has to plan for a short summer season when digestate can be applied to land, with about 6 to 8 months of storage capacity required. [...]the operational team has had to adapt and overall it has been a good stress test of the site to ensure that it has flexibility to cope with future changes. Forsbacka At A Glance Operator Gästrike Ekogas AB Technology Supplier Thöni Industriebetriebe GmbH, Austria Total Investment Approximately US$15 million Throughput 25,000-38,500 tons/yr based on food content Biogas @ 58-62% methane 4,250-6,000 scf/ton Compost 4,000 tons/yr Liquid fertilizer 3.4 million gal/yr (high food waste values) Heat requirement (AD and composting) 1.2 million kWh/yrdepending on season
ISSN:0276-5055