9. •SOURCE OF WATER : Pawana River
•RAW WATER FLOW:
Ph. 1:- 114 mld + 20% started on 1989
Ph. 2:- 114 mld + 20% started on 1999
Ph. 3:- 100 mld + 20% started on 2006
Ph.4:- 100 mld + 20% started on 2010
10. a) Aeration By means of cascade Aerators.
b) Coagulation with chemical addition in flash mixer.
c) Flocculation & clarification in clariflocculator.
d) Filtration in rapid gravity filters.
e) Chlorination for disinfections (Pre & post
chlorination)
11. AREATION FOUNTAIN
• It is the process of
bringing water in
intimate contact with
air there by the water
absorbs oxygen from
air. The various method
are.
By air diffusion
By trickling bed
By using spray
Nozzles
By using cascade.
12. CLARIFLOCULATOR
• When a coagulant is
added to water, the
precipitating solids
remains finely divided
unless they are
agglomerated into well
developed flocks by
way of gentle agitation.
13.
14.
15.
16. FILTER BED
• The suspended & colloidal
matter in the river water is
reduced to consistently
normal proportion by
coagulation., flocculation
and clarification
treatments.
• The final purification is
effected by passing the
treated water through
rapid gravity sand filter.
