Phosphates are essential nutrients, but excess amounts entering water bodies lead to eutrophication, causing algal blooms and oxygen depletion. Major anthropogenic sources are runoff from agricultural fields treated with phosphate fertilizers and wastewater from domestic sewage (containing phosphates from detergents and waste).
Phosphate pollution is caused by
Asked in WBCS Main Paper 4 2022 · Topic: Pollution (Water Pollution: Sources, common pollutants, water quality indicators (BOD, COD, DO), effects, control measures.)
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