What are the three major kinds of impurities in domestic waste water?
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The three major kinds of impurites in domestic waste water are
(i) Dissolved salts such as nitrates, phosphate, other nutrients, toxic , metal ions and organic compounds.
(ii) Biodergradable organic matter.
(iii) Pathogenic microorganisms.
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Answer:
The three major kinds of impurites in domestic waste water are:
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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