Method for control and monitoring of activated sludge in a biolo

Details Method for control and monitoring of activated sludge in a biolo Method for control and monitoring of activated sludge in a biolo

1989-03-23

1992-12-22

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210745, 210903, 210906, 436172, C02F 334

Patent

active

051731878

ABSTRACT:
The present invention provides a process for the control of a biological rification 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.

REFERENCES:
patent: 3684702 (1972-08-01), Hartmann
patent: 4564453 (1986-01-01), Coplot et al.
patent: 4584277 (1986-04-01), Ullman
patent: 4599307 (1986-07-01), Saunders et al.
patent: 4620930 (1986-11-01), McDowell
patent: 4986916 (1991-01-01), Hickey

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