C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/1
C02F 3/00 (2006.01) B01D 53/14 (2006.01) B05B 15/12 (2006.01) C02F 3/04 (2006.01) C02F 3/12 (2006.01)
Patent
CA 1175169
Abstract In a plant for purifying contaminated air the contaminants are transferred from the air to a liquid flowing through a spray booth (1) through which the contaminated air (2) also flows under intimate contact with the liquid. The liquid is then collected in a container (5,13) from which it is recirculated to the spray booth. The closed liquid circulation circuit taking in the spray booth is connected to a biological cleaning step (12,13) in which the contaminants dissolved and/or suspended in the liquid are decomposed and then separated. The biological cleaning step comprises a bioreactor (12), known per se, in which the main portion of the bio-degradation occurs, and a separator(13) for separation of the biosludge coming from the reactor. At least part of the contaminated liquid passing through the spray booth (1) is continuously transferred to the biological cleaning step from which substantially the same quantity of the cleaned liquid is recirculated to the spray booth circulation circuit.
401385
Flakt Aktiebolag
Gowling Lafleur Henderson Llp
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