These wastes are generated from a variety of sources, ranging from industrial manufacturing process wastes to batteries and may come in several forms, including gases, solids, liquids, and sludges. The following are the major hazardous wastes.
Hazardous waste can be defined as waste with properties that make it dangerous or capable of having a harmful effect on human health or the environment.
- Radioactive substances: Nuclear waste, nuclear waste handling tools and unused fuel rods of nuclear power plants.
- Chemicals: Synthetic organics, inorganic metals, hydrocarbons, salts, acids and bases, and flammables and explosives.
- Biomedical wastes: Hypodermic needles, bandages, human waste, discarded medicines and cytotoxic drugs.
- Flammable wastes: Organic solvents, petroleum (oils), plasticisers and organic sludges.
- Explosives: The wastes resulting from ordnance manufacturing, fireworks, airbag inflators and some industrial gases.
- Household hazardous wastes: Pesticides, toilet cleaning acids, waste oil, automobile battery and household battery.