Liquid purification or separation – Processes – Treatment by living organism
Patent
1992-12-23
1995-03-07
Wyse, Thomas
Liquid purification or separation
Processes
Treatment by living organism
210624, 210903, C02F 306
Patent
active
053955285
ABSTRACT:
A method of biologically purifying liquids that are heavily contaminated with organic or inorganic impurities, by using bacteria in the presence of a solid support on which bacteria can be fixed, comprises the following steps: the liquid to be purified is continuously injected without prior filtering into a reactor in which a solid support having grain size lying in the range 1 mm to 5 mm and density lying in the range 1.01 g/cm.sup.3 to 1.3 g/cm.sup.3 has been put into turbulent motion by blowing in gas in the presence of bacteria and while satisfying the conditions required by the metabolism of the bacteria; and the treated liquid is taken continuously from the reactor after a transit time that is long enough to ensure purification of the impurities contained in the liquid to be purified.
REFERENCES:
patent: 3829377 (1974-08-01), Hashimoato
patent: 4130365 (1978-12-01), Sittig
patent: 4415454 (1983-11-01), Fuchs
patent: 4479876 (1984-10-01), Fuchs
patent: 4482458 (1984-11-01), Rovel et al.
patent: 4505819 (1985-03-01), Barnes et al.
patent: 4532042 (1985-07-01), Aivasidis et al.
Audic Jean-Marc
Blanc Joelle
Galvez Laure
Lyonnaise des Eaux-Dumez S.A.
Wyse Thomas
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