Title:
METHOD FOR CONTROLLING BACTERIA CONCENTRATION OF WATER SOLUTION
Document Type and Number:
Japanese Patent JP2731078
Kind Code:
B2
Abstract:
PURPOSE: To easily control the bacteria concentration of a water solution in a bath to a fixed value by setting an optimum sampling quantity of the water solution correspondiong to the bacteria concentration of the water solution stored in the bath.
CONSTITUTION: This method draws out a certain constant flow rate of the water solution from a bath 1 and eliminates bacteria in the water solution with a precise filter film or an ultrafiltration film 2 and returns this water solution to the bath 1 to control the bacteria concentration of the water solution in the bath to a fixed value. Relations between the temperature of the water solution in the bath 1 and the multiplication rate of bacteria are preliminarily checked to express the multiplication rate of bacteria as a function of the temperature of the water solution, and the temperature of the water solution in the bath is used as a control signal to set the flow rate of the water solution to be sampled from the bath.
Inventors:
ITO HIDENOBU
Application Number:
JP11740292A
Publication Date:
March 25, 1998
Filing Date:
May 11, 1992
Export Citation:
Assignee:
MITSUI ZOSEN KK
International Classes:
B01D61/14; C02F1/00; C02F3/00; C12M1/36; C12N1/00; G05D21/00; (IPC1-7): G05D21/00; B01D61/14; C02F1/00; C02F3/00; C12M1/36; C12N1/00
Attorney, Agent or Firm:
Kawakita Takecho
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