Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1993-10-29
1995-01-17
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210670, 210678, 210 98, 210190, 210269, 210277, 205 99, 205100, B01D 1500
Patent
active
053823664
ABSTRACT:
In a retardation installation having a container holding the adsorber material capable of accepting acid, in particular adsorber resin, and a feed for a watery acid-salt-solution, for example from an anodizing bath, a further feed for a regenerating solution to regenerate the adsorber material, in particular demineralized Water in opposite flow to the acid-salt-solution, as well as a drain for the treated acid-salt-solution which has passed the adsorber material and with at least one pump for the transport of the acid salt solution and/or the regenerating solution, precisely one pump is provided for which is configured as a compressed air-diaphragm pump and which exhibits a device for stroke counting as well as a device for the control of the volume flow of acid-salt-solution or regenerating solution on the a basis of the stroke count of the compressed air-diaphragm pump. By means of the stroke count it is possible to obtain a precise admeasurement of the critical amount of fluid up to an acid breakthrough or a dilution of the anodizing bath in consequence of the fluid introduced thereto by the regeneration of the adsorber resin.
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Schaich Roland
Schwering Hans-Ulrich
Guetling GmbH
Nessler Cynthia L.
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