Process for the control of biological clarification stages

Details Process for the control of biological clarification stages Process for the control of biological clarification stages

G - Physics

01

N

167/43, 73/51.5

G01N 33/569 (2006.01) C02F 3/00 (2006.01) G01N 15/10 (2006.01)

Patent

CA 1339959

The present invention provides a process for the control of a biological clarification stage of the aerobic activated sludge type, wherein at least one of the micro-organisms most frequently present in the activated sludge is continuously monitored with regard to the amount thereof in that, in a representative sample from the activated sludge and/ or from the inlet of the activated sludge tank, this micro-organism is bound to fluorescence-labelled antibodies directed against the chosen micro-organism or this micro-organism is allowed to react with a fluorogenic substrate by means of a special metabolic ability, the amount of the thus fluorescence-labelled micro-organism is determined by flow cytometry and, at the same time, the total amount of the micro-organism present is determined by scattered light measurement and/or coloration of the DNA and, depending upon the measurement values thus obtained, the amount of at least one particular micro-organism and/ or the growth conditions for this micro-organism is regulated.

594620

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