Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1982-08-27
1984-01-17
Cintins, Ivars C.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210 89, 210 98, 210140, 210143, 364502, B01J 4900
Patent
active
044262949
ABSTRACT:
An improved control for a resin bed water softener includes a microcomputer which is supplied with input data from a flowmeter indicative of the quantity of soft water leaving the softener. In accordance with the flow data, the microcomputer determines the amount of water used since the last regeneration and also determines the average daily soft water consumption. The microcomputer also coupled to a data input device and receives input data indicative of the total resin bed treating capacity and the incoming water hardness. At a prescribed hour each day, the microcomputer determines the remaining water softener resin bed treating capacity as calculated from the water hardness, the total resin bed treating capacity and the amount of water used since the last regeneration. The remaining resin bed treating capacity is compared to the reserve established as a proportion of the average daily consumption of soft water and regeneration is initiated when the reserve is greater than the remaining resin bed treating capacity.
REFERENCES:
patent: 4237538 (1980-12-01), Le Dall
patent: 4257887 (1981-03-01), Rak et al.
patent: 4275448 (1981-06-01), Le Dall
patent: 4385357 (1983-05-01), Davis et al.
"Comput-A-Save System", Water Refining Company, Inc. Technical Bulletin (7/1/78), pp. 1-19.
"Water King" Sales Brochure.
"The Electronic Demand Water Softner with Variable Reserve" Sales Brochure.
Autotrol Corporation
Cintins Ivars C.
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