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Chemical waste is any excess, unused, or unwanted chemical. [1] Chemical waste may be classified as hazardous waste , [ 2 ] non-hazardous waste, universal waste , or household hazardous waste , each of which is regulated separately by national governments and the United Nations . [ 3 ]
Hazardous waste, chemical waste, industrial solid waste and municipal solid waste are classifications of wastes used by governments in different countries. Sewage treatment plants can treat some industrial wastes, i.e. those consisting of conventional pollutants such as biochemical oxygen demand (BOD).
A household hazardous waste collection center in Seattle, Washington, U.S. Under United States environmental policy, hazardous waste is a waste (usually a solid waste) that has the potential to: cause, or significantly contribute to an increase in mortality or an increase in serious irreversible, or incapacitating reversible illness; or
"In terms of hazardous waste, a landfill is defined as a disposal facility or part of a facility where hazardous waste is placed or on land and which is not a pile, a land treatment facility, a surface impoundment, an underground injection well, a salt dome formation, a salt bed formation, an underground mine, a cave, or a corrective action ...
Pyrolysis of solid waste converts the material into solid, liquid, and gas products. The liquid and gas can be burnt to produce energy or refined into other chemical products (chemical refinery). The solid residue (char) can be further refined into products such as activated carbon.
Solid Waste Tree, Based on Resource Conservation and Recovery Act, United States Environmental Protection Agency. Solid waste means any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or an air pollution control facility and other discarded material, including solid, liquid, semi-solid, or contained gaseous material resulting from industrial ...
Solid waste treatment. The treatment of solid wastes is a key component of waste management. Different forms of solid waste treatment are graded in the ...
A waste product may become a by-product, joint product or resource through an invention that raises a waste product's value above zero. Examples include municipal solid waste (household trash/refuse), hazardous waste, wastewater (such as sewage, which contains bodily wastes (feces and urine) and surface runoff), radioactive waste, and others.