What is tertiary treatment? name two chemicals used as disinfectants?
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Tertiary treatment is the advanced treatment process, following secondary treatment of waste water, that produces high—quality water. Tertiary treatment includes removal of nutrients such as phosphorus and nitrogen and practically all suspended and organic matter from waste water.
Due to its low cost, high availability and easy operation, chlorine has historically been the disinfectant of choice for treating wastewater. Chlorine oxidizes organic matter, including microorganisms and pathogens (see also drinking water chlorination).
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