Method and apparatus for recovering water from a sewer main

Details Method and apparatus for recovering water from a sewer main Method and apparatus for recovering water from a sewer main

1996-09-09

1999-06-08

Lithgow, Thomas M.

Liquid purification or separation

Processes

Treatment by living organism

210631, 210641, 210650, 210652, 210639, 210636, 210798, 2101952, 210747, 210170, 210201, 210202, 210206, 21032169, 210393, 210411, 2104161, 210460, 210151, C02F 900, C02F 144, B01D 3602, B01D 6104

Patent

active

059102497

ABSTRACT:
A process and apparaus for recovery water from raw sewage extracted directly from the sewer including a screen(2) operable to obtain from raw sewage a screened effluent having a maximum particle size of no more than 900 microns. The apparatus also comprises a first membrane separator(5) which is operable to filter the suspended solids from some or all of the screened effluent. The process also includes a second membrane separator preferably in the form of reverse osmosis filter(8).

REFERENCES:
patent: 1666164 (1928-04-01), Chappel
Patent Abstracts of Japan, C-4, p. 123, JP, A, 55-13103 (Mitsui Toatsu Kagaku K.K.), Jan. 30, 1980, Abstract.
Derwent Abstract Accession No. 22853C/13, Class A88 D15 J01 (JO1), JP, A, 55-22304 (Ashahi Chemical Ind. K.K.) Feb. 18 1980, Abtract.
Derwent Abstract Accession No. 129093/18, Class D15, JP, A, 3-68498 (Ebara Infilco K.K.), Mar. 25 1991, Abstract.
Patent Abstract of Japan, C-1130, p. 164, JP, A, 5-192659 (Tokyo Metropolis) Aug. 3 1993, Abstract.
Degremont, "Water Treatment Handbook", sixth edition, vols. 1 and 2, (1991), pp. 179-182, and 849.
Smith and K.S. Wilson, "Power", vol. 134, No. 3, issued Mar. 1990, Triple-membrane treatment enhances feedwater quality, pp. 37-38.
Patent Abstract of Japan, C-1063, p. 122, JP, A, 5-7886, (Ebara Infilco Co. Ltd), 19 Jan. 1993, Abstract and figure, components, 8, 9, 11.

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