Sewage treatment process

Details Sewage treatment process Sewage treatment process

1996-11-08

1999-11-02

Wasyne, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210912, 4352625, 435874, 588223, C02F 334

Patent

active

059763760

ABSTRACT:
A process for the treatment of sewage to provide effective removal of selenium (especially the 6-valent selenium) to meet required standards for the dissolved amount of selenium, and the like, at a low cost are developed. The process and apparatus reduces selenium from the 6-valent selenium using microbiological treatment to obtain 4-valent selenium and/or simple selenium, and then provide a solid-liquid separation.

REFERENCES:
patent: 4519913 (1985-05-01), Baldwin et al.
patent: 4725357 (1988-02-01), Downing et al.
patent: 4910010 (1990-03-01), Khalafalla

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