The feasibility of biogas production from sewage waste depends upon, among other factors, size of treatment plants and composition of sewage.
The Delhi Jal Board is upgrading their sewage treatment plants on their own by including production of biogas from sewage sludge.
The biogas production and utilization facilities are being incorporated in the sewage treatment plants at Keshopur, Kondli, Okhla, Rithala and Yamuna Vihar.
The Ministry of Urban Development has so far sanctioned 110 sewage projects under the Urban Infrastructure and Governance component of Jawaharlal Nehru National Urban Renewal Mission in 65 cities during 2005-2012. Sludge handling and digestion including biogas generation, is one of the components of sewage treatment plants in many projects.
This information was given by the Minister of New and Renewable Energy Dr. Farooq Abdullah in a written reply to a question in Lok Sabha today.