Low Emission Scenario approach to Solid Waste Management from the landfills in Surat City, Gujarat

摘要

Municipal solid waste generation rate is over-riding the population growth rate in all mega-cities in India. The existing policies, programmes and management structure do not adequately address the imminent challenge of managing this waste which is projected to be 165 million tonnes by 2031. The collection of solid waste increased from 30% in 1995 to 98% in 2006. Surat City, with its population of 4.46 million (2011), produces 1350 Mt/d of waste. Until 2002, Surat had one open dumpsite at Bhatar (about 0.23 km2 and 35,45040 Mt of waste). Currently the city has one sanitary landfill site at Khajod (Gujarat) whit a Gabion walled structure and a methane extraction mechanisms. Currently 1243.847 Mt of MSW are collected from six transfer stations based at Bhatar, Katargam, Varachha, Anjana, Pal and Bhestan. In the landfill the waste is leveled by the heavy machineries and a daily cover of soil is also applied. About 400 t/d of garbage are sent to a processing plant established in 2008 on BOOT basis. Other 600 Mt/d of waste are planned to be sent to an energy plant of 'Concorde Blue' technology (Germany) which will be commissioned in 2015.