Case Study: The Corporation of Chennai looks after clearance and management of solid waste in Chennai. Every day around Metric Tonnes (MT) of garbage is collected from the city. Door to door collection of garbage is done in most zones apart from sweeping, collecting, and storing the waste in the specified bins. At present garbage generated in Chennai is dumped at two sites.
Proposals are there for remediation of the existing landfill or scientific closure and to have integrated waste processing facilities with waste to energy plants as one of the components at the existing Kodungaiyur and Perungudi sites. Dr. Sultan Ahmed Ismail is an Indian soil biologist and ecologist from Tamil Nadu. His work has centered on techniques for recycling biodegradable waste into fertiliser using varieties of earthworms, and on soil bioremediation.
Dr. Ismail received a D.Sc. in Zoology from the University of Madras for his research on the role of earthworms in soil ecology and waste management. He works on vermicomposting as a sustainable ecological practice.
He has been instrumental in introducing as well as spreading awareness on environmental issues, solid waste management, vermicomposting, organic farming, vermitech and waste management to several educational institutions, industries and organic farmers in India and abroad. Waste category Source Residential Food wastes, plastics, paper, glass, leather, cardboard, metals, yard wastes, ashes, tires, batteries, old mattresses Industrial Packaging wastes, ashes, chemicals, cans, plastics, metal parts Commercial Thin and thick plastics, food wastes, metals, paper, glass, wood, cardboard materials Institutional Wood, paper, metals, cardboard materials, electronics Construction and Demolition Steel materials, concrete, wood, plastics, rubber, copper wires, dirt and glass Agriculture Agricultural wastes, spoiled food, pesticide containers Biomedical Syringes, bandages, used gloves, catheter, urine bags, drugs, paper, plastics, food wastes, sanitary napkins and diapers, chemicals E-Waste Electronic items like used TVs, transistors, tape recorders, computer cabinets, mother boards, CDs, cassettes, mouse, wires, cords, switches., chargers Table . Major sources of solid waste XII Std Biology-Zoology Chapter- XII Std Biology-Zoology Chapter- Environmental Issues