What is coagulation in wastewater treatment?
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Coagulation in wastewater treatment is a process in which insoluble particles are formed into larger clumps or aggregates by the addition of a chemical coagulant such as aluminum sulfate (alum) or iron salts.
The aggregates are readily trapped in filtration units, resulting in a higher quality effluent. Coagulation can be used to improve water clarity, reduce turbidity and settle out and eliminate suspended solids from wastewater.