A wastewater treatment plant is a facility in which a combination of various processes (e.g., physical, chemical and biological) are used to treat industrial wastewater and remove pollutants
A treatment plant refers to a plant or installation that is used to purify contaminated substances. These substances may be solid, liquid and semi-solids.
Chemicals that are used in the process of removal of suspended solids, viruses, fungi, bacteria, algae and minerals are called as water treatment chemicals.