Directorate Of Panchayat Tender

Portable (Prefabricated) biogas unit - 1.00 m3 capacity (Digester with gas holder of any one of the following specifications) Unit with water jacket : FRP tanks as per (ii) above but with water jacket in between the digester and the gas holder thickness of 3 mm to 4 mm 54 54 17360 937440 ● 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. * Plant to be established in a place fully exposed to sunlight and away from drinking water sources. ● Start up by adding 50 kg of cow dung with equal quantity of water ● Waste feeding after chopping and mixed with water or part of waste water in the ratio of 1:1 ● Daily feeding of easily degradable waste in slurry form or solid waste mixed with equal quantity of water. Rice water, other waste water used for washing of rice, vegetables or meat in the kitchen can be used instead of water. ● Limit the maximum quantity of daily feeding of waste to 7.5 kg/day. A plastic can shall be used for collecting slurry/effluent in case of portable units 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. ● Clean the inlet chamber after each feed and keep it closed ● It is prohibited to feed wastes of slow degrading nature like straw, soil, egg shells, fibrous materials like banana leaves, coconut shells, coconut coir, pseudo stem etc. Feeding of toxic substances like fungicides, insecticides, pesticides, detergents, and disinfectants like phenyl, dettol etc. are also prohibited. ● Mix the substrate or rotate the drum at least weekly for preventing scum formation ● Minimum waste retention time of 40 days ● All PVC pipe of class 4kg/cm2 ● Rubber hose stove and control valve with ISI mark ● Particle size of waste no to exceed 20 mm

Laying and Jointing PVC Pipe. Heading