Method for separating foreign substances by means of a filter fo

Details Method for separating foreign substances by means of a filter fo Method for separating foreign substances by means of a filter fo

1976-10-28

1978-09-19

Cuchlinski, Jr., William A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210500R, B01D 2324

Patent

active

041152662

ABSTRACT:
A method for separating foreign (or extraneous) substances from a liquid containing same (such as waste water) by filtration is provided wherein said liquid is caused to flow in and out of a filtration vessel in which a large number of materials in the form of small piece, granule or powder (of e.g. atactic polypropylene) having a true or apparent specific gravity lower than or equal to that of said liquid are filled without fixing to form a floating layer as a filtering layer. Said foreign substances adhere onto the surfaces of the materials, grow into large particles, are peeled therefrom by the contacting motion of the materials with each other, float up or precipitate, and are removed.

REFERENCES:
patent: 3557955 (1971-01-01), Hirs et al.
patent: 3635764 (1972-01-01), Setser et al.
patent: 3948767 (1976-04-01), Chapman

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