C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/49
C02F 1/52 (2006.01) C02F 1/54 (2006.01)
Patent
CA 1334543
A method is provided herein for the treatment of sewage or other impure water. The method includes adding to the sewage or other impure water in a mixing zone, all three individually but no more than two premixed together of the following: (a) an inorganic coagulant, (b) an anionic polymer, and (c) a cationic polymer, with intimate mixing of the added chemicals with the sewage or other impure water, with the proviso that (d) the inorganic coagulant, either alone or with the anionic polymer or the cationic polymer, cannot be added last; and (e) the anionic polymer and the cationic polymer cannot be premixed and added together. This provides chemically-treated effluent having large, compact, firmly-bonded, substantially-shear resistant and rapidly-separatable flocs therein. The flocs are separated from the liquid in a separating zone. Treated effluent is then removed from the separating zone. A predetermined amount of the treated effluent is then recycled back e.g. to the mixing zone, or another location determined by site trials.
543724
Connaughton Noel
Pohoreski Anton
Continental Manufacturing & Sales Inc.
Johnson Ernest Peter
LandOfFree
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