Purification process for waste and/or industrial water...

Details Purification process for waste and/or industrial water... Purification process for waste and/or industrial water...

C - Chemistry, Metallurgy

02

F

362/12, 362/48

C02F 1/56 (2006.01) B01D 37/03 (2006.01) C02F 1/54 (2006.01) C02F 3/06 (2006.01)

Patent

CA 1145867

Abstract A process for purifying waste or industrial water containing hydrocarbons, comprising the filtration of the water in at least one filter formed from a granular material, the process comprising alternately a fil- tration phase and a counter-washing phase of each of the filters with water, this second phase being intended to remove from the filter the impurities retained thereby during the filtration phase, wherein, during the filtration phase, the water charge to be purified has an anionic polyelectrolyte added thereto before passing over the filter. The incorporation of such polyelectrolytes into the water improves the process efficiency compared with known filter systems of this type.

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