C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/52 (2006.01) C02F 1/54 (2006.01) C02F 1/66 (2006.01) C02F 9/00 (2006.01) C02F 11/14 (2006.01)
Patent
CA 2265058
The present invention relates to a process for treating more or less concentrated aqueous effluents, such as processing waters, industrial or urban waste waters, and sludges, in particular sludges derived from these waste waters. The said process comprises at least one step of physical separation of a liquid phase and of a solid phase dispersed in the said liquid phase and at least one addition of chemical conditioning reagents and optionally of antifoaming agents. The process also comprises the injection of carbon dioxide (CO2) into the said treated aqueous effluents, in an amount which is sufficient to give them a pH of less than 7.8.
L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Geo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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