Water purification process

Details Water purification process Water purification process

1980-01-23

1981-07-28

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210778, B01D 3702

Patent

active

042809134

ABSTRACT:
A process for removing colloidal and soluble contaminants from impure water moving through a hollow, cylindrical microscreen under a positive head pressure, comprising dispersing insoluble, finely divided particulate matter into the impure water and rotating the microscreen at a rate that will form, during each rotation thereof, an intermixed layer of contaminants and particulate matter over substantially the entire inner surface of the microscreen through which the impure water is passing. The intermixed layer forms a filter substantially impermeable to contaminants and particulate matter of a size that could pass through the microscreen pores, but it is not impermeable to water. Preferably, the finely divided particulate matter can be a sorbent material, e.g. powdered activated carbon, so that contaminants are both filtered and sorbed from the water.

REFERENCES:
patent: 2179028 (1939-11-01), Alton
patent: 3733266 (1973-05-01), Bishop et al.
patent: 3904518 (1975-09-01), Hutton et al.
patent: 4038187 (1977-07-01), Saffran
patent: 4198299 (1980-04-01), Ewing et al.

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