Method and device for filtering waste gases of waste water...

Details Method and device for filtering waste gases of waste water... Method and device for filtering waste gases of waste water...

C - Chemistry, Metallurgy

02

F

C02F 3/30 (2006.01) B01D 53/85 (2006.01) C02F 3/02 (2006.01)

Patent

CA 2075450

P 153 S U M M A R Y The waste water which is discharged from the anaerobic treatment stages of biological waste water treatment plants still contains highly volatile organic substances which. If not biodegraded, escape into the ambient air and lead to unwelcome odors. Also, the exhaust air of the anaerobic treatment stage may contain such highly volatile substances. An escape into the ambient air can be prevented if the waste water which is discharged from the anaerobic treatment stage is aerated with exhaust air sucked off from the anaerobic stage and if this exhaust air, after the aeration, is then fed to a spray washer and compost filter. The water for the spray washer is taken from the discharge of the anaerobic stage and returns there.

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