In our society as we are getting civilised and technically advance, we are surrounded by some social and environmental issues and one of them is â€œWaste Managementâ€ .The waste generated from the various sources can be categorised into two following types:
I] Biodegradable waste: Those materials which can be degraded (broken down) by the micro-organisms, from complex form to simple forms and relatively harmless compounds e.g. paper, vegetable and fruit peels, food leftovers, sewage, animalâ€™s excreta, plants and its parts etc.
II] Non-biodegradable waste: Those materials which cannot be degraded e.g. plastics, glass, some biomedical waste, styrofoam, thermacole (the kinds of packing material) and pesticides like DDT etc.
The solid waste includes bottles, glass containers, crockery, plastic containers, polyethylene and other packing materials which are used and then thrown away as garbage. These pile up at public and demolition, sludge, dead and decaying animals, heaps of crop residues etc. All of these materials enhancing more quantity of solid waste in the urban and populated areas than in the rural areas.
Solid waste can be disposed to the land or ocean. Solid wastes can also be recovered and reprocessed as well as recycled. Before disposal or recovery, all waste is segregated accordingly into solid and liquid wastes and side by side into bio and non-bio degradable waste to make the waste management programmes successfully6. As already mentioned, waste disposal in India simply involves rounding up the waste from different parts of the city, and dumping everything in landfills. Various research institutes estimate that 1400 sq.km. land would be required by 2047 for municipal waste. All these i.e. collection, classification and recovery are forming the steps of systematic any waste management assignments.
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