What are the three major kinds of impurities in domestic wastewater ?

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asked Mar 14, 2018 in Class XII Biology by nikita74 (-1,048 points)
What are the three major kinds of impurities in domestic wastewater ?

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answered Mar 14, 2018 by vijay Premium (523 points)
1. Suspended solids, e.g., Sand, silt and clay.
2. Colloidal materials, e.g., Fecal matter, bacteria, cloth and paper fibres.
3. Dissolved materials, e.g., Nutrients (nitrate, ammonia, phosphate, sodium, calcium).

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