C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/1
C02F 3/00 (2006.01) C02F 3/04 (2006.01) C02F 3/10 (2006.01) C02F 3/12 (2006.01) C02F 3/30 (2006.01) C02F 3/34 (2006.01)
Patent
CA 1099829
Abstract of the disclosure Waste water purifying procedure to be used in treatment of waste water containing aromatic compounds. In a biofilter in a layer containing bark of wood there is formed a bacterial population comprising one or several of the bacterial strains deposited in the University of Helsinki Institute of General Microbiology under the deposition codes YM 134-202 and YM 241-268 and which have been formed by packing into biofilters crushed coniferous tree bark and bactericidal water, ooze, mud or bark residues taken from a water body polluted by chlorinated and unchlorinated phenols and by aromatic carboxylic acids and by thereafter feeding into the biofilters water containing said substances, whereby the bacterial strains are characterized by tolerance of the presence of chlorinated and unchlorinated phenols and of aromatic carboxylic acids, and the waste water to be purified is conducted through the biofilter, whereby the waste water is purified by effect of action of the bacterial population.
296529
Enso-Gutzeit Osakeyhtio
Marks & Clerk
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