http://www.biogas-info.co.uk/index.php/ad-map.html This map shows operational anaerobic digestion plants in the UK (excluding those in the water industry * ). Plants can be filtered by the following categories: Agricultural – an anaerobic digester exclusively using slurries, manures, crops or crop residues produced on-farm Community – an anaerobic digester predominantly using food waste, collected from multiple sources Industrial – an anaerobic digester used to treat on-site waste, such as brewery effluent or food processing residues Each of these categories can be further filtered by the end-use of the biogas : Heat and/or Power ( CHP ) – an anaerobic digester generating biogas which is burned on-site to generate heat, power or both Biomethane to Grid (BtG) – an anaerobic digester generating and upgrading biogas, to derive biomethane for injection into the national gas grid
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http://www.bioenergyconsult.com/refuse-derived-fuel/ MSW is a poor-quality fuel and its pre-processing is necessary to prepare fuel pellets to improve its consistency, storage and handling characteristics, combustion behaviour and calorific value. Technological improvements are taking place in the realms of advanced source separation, resource recovery and production/utilisation of recovered fuel in both existing and new plants for this purpose. There has been an increase in global interest in the preparation of RDF containing a blend of pre-processed MSW with coal suitable for combustion in pulverised coal and fluidised bed boilers. Pelletization of municipal solid waste involves the processes of segregating, crushing, mixing high and low heat value organic waste material and solidifying it to produce fuel pellets or briquettes, also referred to as Refuse Derived Fuel (RDF). The process is essentially a method that condenses the waste or changes its physical form and enric
http://www.organic-power.co.uk/why_anaerobic_digestion.aspx Why Anaerobic Digestion? There are essentially three main options for dealing with organic wastes: § bury it - which means landfilling § burn it - which means incineration, gasification or pyrolysis § bio-digest it - which means either anaerobic digestion or composting Technology Sustainable Impact on the environment Energy recovery Fertiliser output Water recovery Heavy metal recovery Landfill Unsustainable waste of resources Some CH 4 to atmosphere, leachate problems Partial if landfill gas extracted No fertiliser outputs Lost in leachate Not possible Composting Energy required Damage to ozone layer, also leachate problems None Incomplete pathogen kill Lost to atmosphere Not possible Incineration Fertiliser loss negates any energy gain