Process and apparatus for treatment of wastewater

Details Process and apparatus for treatment of wastewater Process and apparatus for treatment of wastewater

C - Chemistry, Metallurgy

02

F

362/25

C02F 3/22 (2006.01)

Patent

CA 1126420

8 B 30585 Abstract Process and Apparatus for Treatment of Wastewater A method and apparatus for treating wastewater by circulating it around a system comprising a downcomer and a riser communicating with each other at their lower ends, the level of the wastewater in the downcomer being above the level of the wastewater in the riser and providing a hydrostatic pressure head which causes circulation of the wastewater around the system, supplying a gas containing free oxygen to the wastewater as it passes through the downcomer, and pumping the wastewater up from, or from near, the top of the riser to a part of the downcomer, at or near the top thereof, which has, for at least a part of its length, a cross- sectional area which is less than the cross-sectional area of the remainder of the downcomer below the said part.

343661

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