Water deionizing apparatus

Details Water deionizing apparatus Water deionizing apparatus

1989-05-26

1990-05-22

Cintins, Ivars

Liquid purification or separation

Serially connected distinct treating with or without storage...

With storage unit

210282, C02F 142

Patent

active

049275330

ABSTRACT:
In photographic processing apparatus for developing, bleaching-fixing and washing photographic materials, a predetermined quantity of fresh wash water is supplied into a washing tank every time a predetermined amount of the photographic materials have been washed. The fresh wash water is provided by deionizing city water and is reservoired in a replenisher tank. In order to detect a predetermined loss of the fresh wash water in the replenisher tank, a conductivity increasing material is dissolved in the fresh wash water in the replenisher tank when a predetermined quantity of the deionized water is supplied so as to electrically connect a pair of electrodes disposed at a predetermined depth of the replenisher tank. A sterilizer is mixed in the fresh wash water to prevent bacterial growth in the replenisher tank. The conductivity increasing material and the sterilizer are prepared as a predetermined dose of mixture necessary and sufficient for the predetermined quantity of deionized water supplied into the replenisher tank.

REFERENCES:
patent: 4474620 (1984-10-01), Hall

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