| No water
available from bore well , open well , spring have same physical & chemical
characteristics, hence each treatment employed , design of the plant depends upon
the result of raw water analysis report. There are generally 3 types of impurities
in raw water which needs treatment : 1.
Undissolved physical impurities. [ Turbidity , Odour, Colour
etc.]
2. Dissolved chemical impurities. [ Mg,
Ca, Na, Hco3, iron etc.]
3. Microbiological
impurities [ Bacteria, Virus, Pathogens etc.] As
EURO norms are applicable since 1st January, 2004 the raw water should be tested
in a competent laboratory to ascertain the level of pesticides in raw water as
it takes typical absorbtion method to treat excess level of pesticides
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