Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1987-09-30
1989-06-13
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210669, 210721, 210724, 210744, 210 86, 210104, 210143, 210199, 210202, 210219, 2102571, 210916, 210917, C02F 900
Patent
active
048390577
ABSTRACT:
A method and apparatus for the removal or reduction of inorganic contaminants, hardness, radionuclides, organic contaminants, odor, turbidity, discoloration, and objectionable taste from water, subjects the water to lime-phosphate softening, aeration, sedimentation, filtration and ion exchange in an automatic cycle especially suited for home and small commercial usage. The raw water, such as well water, is first subjected to a cold lime softening and aeration treatment, then to a phosphate treatment followed by settling and filtering. The thus treated water is supplied to a pressurized tank feeding a conventional ion exchange water softening unit as the water is tapped for use. No heat input is needed but the treated water can be heated as desired for use. An electrical control system regulates the water and chemicals input agitation, aeration, the time of chemical treatment in successive stages and the maintenance of a desired head pressure for the treated water. The apparatus is compact, fully automatic in operation, low in cost and is well suited for use in private homes.
REFERENCES:
patent: 4029576 (1977-06-01), Shivers
patent: 4329224 (1982-05-01), Kim
patent: 4412924 (1983-11-01), Feather
patent: 4659481 (1987-04-01), Chen
patent: 4676908 (1987-06-01), Ciepiela et al.
Alar Engineering Corporation
Cintins Ivars
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