Purification of waste water

Details Purification of waste water Purification of waste water

C - Chemistry, Metallurgy

02

F

362/13, 362/63

C02F 1/00 (2006.01) B01D 37/00 (2006.01) B01D 37/03 (2006.01) C02F 3/04 (2006.01) C02F 3/10 (2006.01) C02F 3/12 (2006.01)

Patent

CA 1111158

A B S T R A C T This invention describes a process for purifying waste water including reduction of the chemical and biological oxygen demands needed in connection with any further purification thereof which comprises the steps of admixing the waste water with one or more flocculating agents to effect separation of the majority of the colloidal components and passing the resultant admixture under gravity through a fabric located in a sus- pension device whereby a combined filter is formed comprising a) the fabric and b) a primary filter layer of alluvial solids, thereby to effect pre- clarification of the waste water and the removal of the majority of the particles of solids including flocculated colloidal components from the aqueous phase, and an apparatus wherein the purification of the waste water is processed.

278336

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