Liquid purification or separation – Processes – Treatment by living organism
Patent
1994-05-26
1997-10-21
Wyse, Thomas G.
Liquid purification or separation
Processes
Treatment by living organism
210617, G02F 306
Patent
active
056792522
ABSTRACT:
The present invention provides a high-performance organic waste water treating system which allows continuous processing of waste water without causing deterioration of the performance due to clogging of the filtration bed, excessive sludge, bad smell, or breeding of flies. The system of the invention includes a trickling filtration bed packed with filter media having a particle diameter of not greater than 10 mm, the filtration bed comprising an upper portion, a middle portion, and a lower portion, an air supply unit for feeding air from a bottom of the filtration bed to make the air flown through the filtration bed, and a vent pipe embedded into the middle portion of the filtration bed to connect to the atmosphere. A predetermined amount of organic waste water is abruptly supplied over a short time period into the trickling filtration bed at a predetermined cycle. Repetition of such abrupt supply of organic waste water into the system allows organic waste water to be processed efficiently without causing secondary products such as a microbial membrane or sludge.
REFERENCES:
patent: 4009099 (1977-02-01), Jeris
patent: 4076616 (1978-02-01), Verde
patent: 4177144 (1979-12-01), Hickey et al.
Gotou Yasuyuki
Kanie Teruyuki
Nakagaki Takashi
Okamoto Masumi
Suzuki Katsuhiro
Deconta Integre Co., Ltd.
Wyse Thomas G.
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