Solid waste Is any discarded material, including solid, liquid, semisolid, or contained gaseous material, resulting from industrial, municipal, commercial, agricultural operations and from community and institutional activities. It can be classified into municipal, industrial, or hazardous waste.
Municipal solid waste results from or is incidental to municipal, community, commercial, institutional, and recreational activities, including garbage (food waste), rubbish, yard waste, litter, ashes, street cleanings, dead animals, abandoned automobiles, and all other solid waste other than industrial solid waste.
Industrial solid waste is the waste produced by industrial activity which includes any material that is rendered useless during a manufacturing process such as that of factories, mills, and mining operations. Types of industrial waste include dirt and gravel, masonry and concrete, scrap metal, oil, solvents, chemicals, scrap lumber, even vegetable matter from restaurants. Industrial waste may be solid, semi-solid or liquid in form.
Hazardous solid waste is a waste with properties that make it dangerous or capable of having a harmful effect on human health or the environment. Hazardous waste is generated from many sources, ranging from industrial manufacturing process wastes to batteries and may come in many forms, including liquids, solids gases, and sludges.