Kerala Govt biogas plant subsidy instructions

Subsidy Details for  Household level Bio gas plant

2.3. 1 a. Household level (Prefabricated -Low Cost Type) biogas plant
Infrastructure & Specifications
1. Treatment capacity – 2.5 kg of solid waste per day
2. Volume of digester including gas holder - 0.50 m3
3. PVC tank with circular shape as digester and gas holder
4. Inlet device with PVC pipe of diameter 110 mm
5. Inlet chamber with a plastic mug having circular shape and with a lid.
6. Outlet devise with PVC pipe of 63mm
7. A plastic can of 10 liter capacity to be used for collecting slurry/effluent for safe disposal.
If toilet waste is also treated in biogas plant, slurry from biogas plant to be treated in a
septic tank soak pit arrangement.
8. Rubber hose of 25 mm (¾ inch) diameter for conveyance of biogas for use with a
maximum length of 10 m
9. Stove with single burner
10. Control valve for regulating gas
*Plant to be established in a place fully exposed to sunlight and away from drinking water
source.
Standards
1. Minimum waste retention time of 40 days
2. All PVC pipe of class 4 kg/cm2
3. Rubber hose, stove and control valve with ISI mark
4. Particle size of waste not to exceed 20 mm
Unit cost
Rs.6,500/-
O&M Protocols
1. Start up by adding 25 kg of cow dung with equal quantity of water
2. Waste feeding after chopping and mixed with water in the ratio 1:1
3. Daily feeding of easily degradable waste in slurry form or solid waste mixed with equal
quantity of water ( rice water or other kitchen waste water used for washing of rice,
vegetables ,meat etc is preferable) Clean the inlet chamber after each feed and keep
4. Limit the maximum quantity of daily feeding of waste.
5. Daily removal of slurry in plastic cans and disposal as manure / disposal in to septic tank
and soak pit arrangement.
6. Prohibited to feed the 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.
7. Mix the substrate or rotate the drum at least weekly for preventing scum formation
Maintenance cost
Rs. 200/- annum per unit
For more information visit:Here

Subsidy Will be like this

Household level portable low cost biogas plants / pucca biogas plants: 50 % of the 

capital cost for installation of biogas plants subject to a maximum of Rs.3250 per unit.

Source:Kerala Government site Link