Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-02-02
1979-09-25
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 11, 210 17, 435251, C02C 104
Patent
active
041690494
ABSTRACT:
Waste water purifying procedure intended 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 bactery strains deposited in the Universite 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 bacteriferous 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 bactery 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 bactery population.
REFERENCES:
patent: 1437394 (1922-12-01), Brown
patent: 3660278 (1972-05-01), Mimura et al.
patent: 3700590 (1972-10-01), Burton
patent: 3871956 (1975-03-01), Azarowicz
Enso-Gutzeit Osakeyhtio
Wyse Thomas G.
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