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Waste management is the collection, transport, processing, recycling, or disposal of solid, liquid, and gaseous wastes in ways that reduce their effect on human health and the environment. Waste can be treated using thermal, chemical, biological, physical and other processes in order to reduce its volume, to recover materials for recycling or to produce energy. Landfill is a common way of disposing of solid waste, while liquid waste is often injected underground
Waste management practices differ for developed and developing nations, for urban and rural areas, and for residential and industrial, producers. Management for non-hazardous residential and institutional waste in metropolitan areas is usually the responsibility of local government authorities, while management for non-hazardous commercial and industrial waste is usually the responsibility of the generator
