Method and apparatus for treating waste water

Details Method and apparatus for treating waste water Method and apparatus for treating waste water

C - Chemistry, Metallurgy

02

F

362/17

C02F 3/12 (2006.01) C02F 3/06 (2006.01) C02F 3/10 (2006.01)

Patent

CA 1141045

ABSTRACT OF THE DISCLOSURE: The invention is concerned with a method for biologically treating waste water comprising the steps of: (a) introducing the waste water into a biological basin; (b) introducing an oxygen containing gas into the waste water; and (c) circulating the mixture of waste water and biological sludge upwardly through basin installation which is provided with channels comprising baffle plates spaces 2 to 20 cm apart and shaped in the form of chicanes; characterized in that a sludge age of at least three days is reached by creating a slow circulation flow while avoiding clogging of said basin installations. The inven- tion is also concerned with the apparatus for carrying out this process which has the advantage to improve the purifi- cation action.

343810

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