Objective The project aims at demonstrating a reliable system, namely a fluidized bed, for the anaerobic treatment with energy production of low-strength wastewaters at high space loading rates.The technology consists of a fluidized bed of 125 m3 useful volume containing 50 m3 of an innovative porous granular material.The latter will prevent the active biomass to escape from the reactor and, hence, allow low hydraulic retention times (6-12 h) and, thus, high space loading rates (20-35 kg COD per m3 bioreactor volume per day).The demonstration will be applied to an agro-food wastewater, effluent of an ice creamproducing factory located at Saint-Dizier (France).2000 kg COD in 200 (up to 300) m3 of effluent at 10 g COD per litre, a temperature of 25-30 deg. C and a pH of 4-5. 5 are to be treated daily. After neutralisation to pH 6. 5-7. 0, the effluent will be fed in the bioreactor and biomethanized at 30-35 deg. C. Fluidisation of the porous carrier will occur by recycle of the effluent. A specific biogas production rate of 3. 6 m3 per m3 bioreactor volume per day is expected, that is 3500 GJ per year.Compared to a classical solution implying 1735 MWh of primary energyper year for treatment in an aerobic municipal wastewater treatment plant, and the depollution taxes, the savings allow to calculate a simple payback period of 6. 3 years.Cooperation with Spain (CIEMAT: Centro de Investigacion Energetica Medioambiental y Technologica, Madrid) is planned. Programme(s) ENG-ENDEMO C - Programme (EEC) of demonstration projects and industrial pilot projects (EEC) in the energy field, 1985-1989 Topic(s) 1.5 - PRODUCTION AND USE OF BIOGAS Call for proposal Data not available Funding Scheme DEM - Demonstration contracts Coordinator Bertin & Cie EU contribution No data Address 59 rue Pierre Curie Zone Industrielle des Gatines 78373 Plaisir France See on map Total cost No data
