What is Waste Management
Management of Garbage
Garbage is refuse of food, vegetables and fruit articles along with other domestic wastes. Every household produces garbage. Garbage management is the nonpollutant disposal of the waste. It consists of three steps.
- Collection of garbage.
- Transport of garbage from collection sites to disposal sites.
- Disposal of garbage.
The noncombustible waste is used in landfill.
Pig and Cattle Feeding :
Pigs and stray cattle feed on garbage and reduce its bulk.
Rag Picking :
Rag pickers remove various recyclable articles like rags, polythene, plastic articles, glass pieces, cans, paper, cardboard, etc.
Recycling :
Articles salvaged by rag pickers are recycled. Waste paper yields cardboard while waste cotton textiles are used to produce paper.
Composting :
Garbage is shredded and mixed with sewage sludge and other organic remains. It is converted into compost or vermicompost.
Biogas and Manure :
Organic wastes can also be decomposed anaerobically to yield biogas and manure.
Burning :
The solid combustible waste is burnt. It, however, causes air pollution.
Incineration :
Organic waste is aerobically burnt at 850ºC inside incinerator. Ash and unburnt matter is disposed off in land filling.
Pyrolysis :
It is anaerobic combustion of organic waste at a temperature of 1650ºC.
Land-filling or Dumping :
Solid waste is pulverised and dumped into a low lying area.