New high rate bio-methanation technology for integrated treatment of sewage and organic solid waste useful for decentralized applications
Hyderabad: Solid and liquid wastes are major challenges faced by big cities as also for the rapidly urbanizing areas, and sustainable technologies are needed for tackling them. Now with a new technology developed by Indian scientists, an integrated treatment of sewage along with organic solid waste could overcome the solid and liquid waste disposal issues, and groundwater and wastewater can be converted into potable water.
This integrated approach of sewage and organic solid waste treatment could be exploited anywhere in India, where municipalities comprising around 50,000 to 1,00,000 population generate approximately 2 to 4 million litres per day of sewage and 5 to 10 metric tons per day of organic solid waste.
The integrated model plant comprising of Anaerobic Gas lift Reactor (AGR) and Nanofiltration (NF) technologies has been established at CSIR-IICT, Hyderabad, for the simultaneous treatment of sewage (100 liters/day) and organic solid waste (250 kg/day) for biogas, bio manure, and reusable water. The AGR Technology is used for the treatment of organic solid waste and concomitant generation of biogas and bio manure along with NF setup.
The integrated technology has been jointly developed by Dr. A. Gangagni Rao, Chief Scientist, and Dr. S. Sridhar, Senior Principal Scientist, CSIR- Indian Institute of Chemical Technology (IICT). It is field-tested and working continuously for the past two years. The technologies supported by the ‘Waste Management Technology’ program of the Department of Science and Technology (DST), Government of India have received national patents individually.
According to Dr. Rao and Dr. Sridhar, urban and local bodies and gated communities comprising around 50,000 to 1,00,000 population could benefit from this technology. Instead of sending the organic solid waste and liquid waste to the common bigger facilities in the city, the same waste could be treated at source only in decentralized manner.
This integrated and sustainable sewage and organic solid waste treatment system can be used for treating groundwater and wastewater and generating potable and reusable water, respectively.
– global bihari bureau
