2006-12-02 02:17:45 · 3 answers · asked by Iswarya G 1 in Science & Mathematics ➔ Chemistry
The references given will give you background, pictures, and diagrams on the subject.
2006-12-02 03:26:52 · answer #1 · answered by Peter Boiter Woods 7 · 0⤊ 0⤋
Drinking water can come from surface waters (lakes and rivers) or from underground (pumped from ground water or artesian aquifers).
Effluent is the treated water from sewage processing. To meet the modern regulations it must be free of germs and of chemicals and of cloudiness and of bad smells. It must then be dumped only into a river of sufficient flow (or into the ocean) to dilute the effluent on a volume by volume basis.
Note that this does not mean that the receiving river itself can't already be polluted from chemical wastes and that the same river getting this effluent can't be used as a drinking water supply source downstream at the next city.
2006-12-02 02:29:14 · answer #2 · answered by Rich Z 7 · 0⤊ 0⤋
refer to google.
2006-12-02 02:43:32 · answer #3 · answered by deepak. 2 · 0⤊ 0⤋