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Which one of the following impuritites is easiest to remove from wastewater ?A. BacteriaB. ColloidsC. Dissolved soildsD. Suspended solids

Answer» Three type of impurites are found in waste water , suspended particle (solids). Colloidal impurities and dissolved material (inorganic) like calcium, ammonia, toxic material , phosphate , sodium , calcium and nitrate. Out of them suspended solids like sand silt and clay impurities are easily removes , in sewage treatment plants.


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