1.3 pre treatment -rdf - anaerobic digestion - biogas -composting and peat production plant
TRANSCRIPT
1.3 PRETREATMENT -RDF
COMPOSTING AND PEAT TREATED WASTE − Municipal solid waste. − Green waste. PROCESS DESCRIPTION Municipal solid waste are collected they are put into feeding bunkers. Amanual sorting device for the remoare taken into the composting areaafter a preliminary stocking. Urban waste are divided by mechanUndersize fraction are taken to thdestined to be transformed into bEXTRUDER system (pos. 6-12). Undersize organic materials comin(pos. 13-19 and 21) within a mixingto a minimum content of moistureheated up to 38°C, necessary tempBIMA digester (pos. 20) where it remBIMA digester gets no mechanicasystem is given by a flushing causFrom a chemical point of view, biog30-40% of carbon dioxide (CO2). Produced biogas is taken into a motors for the production of eledewatered, mixed with green sEXTRUDER (pos. 31-37). Then tcomposting process is developed innext refining phase enable the prodExhaust airs coming from the diffecompost windrows, are treated wicontrol panel it’s possible to manaanaerobic and composting process. PRODUCTS AND THEIR APPLICACompost. Produced compost is indispensable material for agricudestination, it can be mixed with comBiogas. Produce biogas is transforequirements and/or to be sold outsRDF briquettes. Compacted producweight of ca. 1.500 kg/mc.
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– ANAEROBIC DIGESTION – BIOGAS – PRODUCION PLANT.
together to a separate covered area of the plant where fter that the waste are transported to a shredder and to val of the damaging materials (pos. 1-4). Green waste : here they are shredded outside by a mobile machine
ical screening (pos. 5) as follow: e fermentation plant, while the oversize materials are riquettes with a specific plant including PROMECO
g from screening are pre-treated with a wet selection with water for a preliminary dissolving of organics due required by the methanisation. The organic sludge, erature for a mesophilic trasformation, is pumped into ains for a minimum period of 18 days.
l devices, such as mixers, pumps or blowers. Mixing ed by a difference of pressure of the produced biogas. as is constituted by 60-70% of methane (CH4) and ca.
gasholder where it’s stocked before burning into gas ctricity and heat (pos. 22-27). Digested sludge is hredded waste, and then treated by PROMECO he intensive phase (called Active compost time) of a covered area (pos. 38-40). The curing phase and a
uction of a good quality compost. rent area of the plant, besides the airs sucked from
th biofilter and chamber filter (pos. 28-30). From the ge the automation and the regular developing of the
TION characterised by high quality and it represents an lture and soil remediation. Depending by the final
pounds to improve the characteristic of the product. rmed into electricity and heat, both used for process ide. t with calorific value of 4.500 kcal/kg and with specific