Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1983-10-11
1984-09-11
Cintins, Ivars C.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210 89, 210 98, 210140, 210143, 364502, B01J 4900
Patent
active
044709110
ABSTRACT:
An improved control for a particle bed water treatment device includes a microcomputer which is supplied with input data from a flowmeter indicative of the quantity of treated water leaving the water treatment device. In accordance with the flow data, the microcomputer determines the amount of water used since the last regeneration and also determines the average daily treated water consumption. The microcomputer is also coupled to a data input device and receives input data indicative of the total particle bed treating capacity resulting in complete particle bed exhaustion. To recognize and account for the additional particle bed capacity that is created when a partially exhausted particle bed is regenerated, the microcomputer advantageously adjusts the total treating bed capacity value received from the data input device in accordance with the remaining particle capacity existing prior to regeneration. At a prescribed hour each day, the microcomputer determines the remaining particle bed treating capacity in accordance with the difference between the adjusted total capacity and the amount of water used since the last regeneration. The remaining particle bed treating capacity is compared to the reserve established as a proportion of the average daily consumption of treated water and regeneration is initiated when the reserve is greater than the remaining particle bed treating capacity.
REFERENCES:
patent: 4104158 (1978-08-01), Davis
patent: 4237538 (1980-12-01), Le Dall
patent: 4275448 (1981-06-01), Le Dall
patent: 4385357 (1983-05-01), Davis et al.
"Comput-A-Save System--Operation and Installation Guide" by Water Refining Company, Inc., Jul. 1, 1978.
Sales Literature--"The Electronic Demand Water Softener with Variable Reserve (The Lindsay Know It All)" by Lindsay Corp., Publication Date Feb. 1982.
Sales Literature--"Water King Solid State 301 & 302" by Water King, Sta-Rite Industries, Publication Date Unknown.
Autotrol Corporation
Cintins Ivars C.
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