Apparatus and process for biological wastewater purification

Details Apparatus and process for biological wastewater purification Apparatus and process for biological wastewater purification

C - Chemistry, Metallurgy

02

F

C02F 3/10 (2006.01) B01D 21/00 (2006.01) C02F 3/12 (2006.01)

Patent

CA 2329393

The present invention relates to an apparatus and a process for biological wastewater purification. According to the invention an activation tank (10) is provided in which, with feed of a catalyst, wastewater constituents are degraded by degradation means (11), for example microorganisms, suspended in the wastewater. In the activation tank (10) is disposed at least one lamellae pack (50) in or on which the degradation means (11) suspended in the wastewater are separated out by sedimentation to fall as thickened sedimentation means sludge (11') to the bottom region (15) of the activation tank (10). In the said bottom region (15) of the activation tank (10) is provided forced recirculation (20, 22) of the degradation means, which takes up the thickened degradation means sludge (11') and recirculates it as suspended degradation means (11) back to the activation tank (10).

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