WASTE TREATMENT FOR DOMESTIC USE
Using bio-methanisation technology all domestic bio waste including wastewater can be treated hygienically and biogas, a very good cooking fuel is produced. This helps to prevent the tendency to throw the waste materials in roads and public places. Generation of cooking gas at house hold level helps to overcome fuel crisis to a great extent.
Anybody can install domestic Bio waste treatment plants with a minimum investment. Local self governments should take much interest to provide financial assistance for domestic programmes. This helps the local bodies to save permanently the huge recurring expenses they have to incur for the collection and transportation of domestic waste to a centralized plant.
Different models of domestic plants to meet the requirement of all categories of beneficiaries in the society is available.
The easily degradable waste material mixed with wastewater from the kitchen is fed into the plant through the inlet chamber of the plant. This waste is converted into cooking gas with the help of a special type of anaerobic bacteria. The main component of the gas produced is methane which is a renewable source of energy.
The space required for a domestic plant (1 Cum) is one square meter and installation does not take a long time depending on the plant size. The gas generated from the waste of a family of 3 -5 members is sufficient enough to work a single burner stove for more than 2 hrs everyday.
The return on investment of a domestic bio waste treatment – bio energy plant is also very good. A 1 Cum plant is sufficient to save the 70% - 90% consumption of fire wood or other cooking fuels every day. Within 3-4 years the entire investment will be got back as cooking gas and liquid fertilizer. The benefit from the methane emission reduction is another added advantage.