tender for source level waste management project, project no so982/23 source level waste management portable ( prefabricated ) biogas unit. , items , portable ( prefabricated ) biogas unit - 1.00 m3 capacity specification and size unit with water jacket : frp tanks as per ( ii ) above but with water jacket in between the digester and the gas holder thickness of 3mm to 4 mm infrastructure requirements treatment capacity – 7.5 kg solid waste per day • digester with gas holder of any one of the specifications listed above. • inlet device with pipe of diameter 110 mm • inlet chamber container, having circular shape of 30 cm diameter and with a lid. outlet device with pipe of 63mm diameter • a plastic can of 10 litre capacity to be used for collecting slurry / effluent for safe disposal. ( if toilet waste is also treated in a biogas plant, slurry from the biogas plant to be treated in a septic tank soak pit arrangement. ) • rubber hose of 25 mm ( ¾ inch ) diameter for conveyance of biogas for use with a maximum length of 10 m • stove with single burner • control valve for regulating gas • mosquito net also to be provided over the water jacket. • cow dung - 50 kg • * plant to be established in a place fully exposed to sunlight and away from drinking water sources.