give two examples of each type of impurities present in sewage
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nitrates and phosphates
Harsdeep:
that was very esay
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nutrients -- phosphorus and nitrogen
bacteria--cholera and typhoid
other microbes-- which cause dysentry
inorganic impurities --nitrates metals
bacteria--cholera and typhoid
other microbes-- which cause dysentry
inorganic impurities --nitrates metals
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