Liquid purification or separation – With gas-liquid surface contact means – With separator
Patent
1993-02-01
1996-01-16
Wyse, Thomas
Liquid purification or separation
With gas-liquid surface contact means
With separator
2101953, 210219, 261DIG70, C02F 306
Patent
active
054845246
ABSTRACT:
A wastewater treatment plant for removal of organic matter, suspended solids and other pollutants comprising a pre-treatment chamber, a biofilm-aeration chamber and a settling chamber. Biofilm grows on biofilm support structure which is stationary and submerged in the mixed liquor of the biofilm aeration chamber. The combination of submerged or surface aeration and suspended solids particle size reduction occurs thereby creating a sufficient fluid flow within the biofilm aeration chamber. This combination of sufficient fluid flow, and reduced size suspended organic particles results in the efficient digestion of organic matter and pollutants by the biofilm growing on the biofilm support structure submerged in the biofilm aeration chamber. This results in a vastly more effective digestive process than conventional processes producing no sludge. Further, resulting treated effluent has a high dissolved oxygen content and low BOD and SS. The apparatus and process has the following advantages: low MLSS concentration, short biofilm incubation time, no clogging of the system, good response to shock loading, high DO in the effluent, consistent effluent quality, sludge is eliminated, wastewater treatment duration is shortened, the process is not temperature sensitive, plant design is greatly simplified, plants of the present invention are small by comparison to conventional plants, the present invention can be a significant step in the treatment of drinking water, energy consumption during treatment is low, the present invention is very cost effective, the process permits other purification processes to be used and the process is volumetrically and BOD insensitive.
REFERENCES:
patent: 3928l99 (1975-12-01), Kirk et al.
patent: 3966599 (1976-06-01), Burkhead
patent: 3966608 (1976-06-01), Mason et al.
patent: 3972965 (1976-08-01), Higgins
patent: 4263143 (1981-04-01), Ebner et al.
patent: 4267052 (1981-05-01), Chang
patent: 4289626 (1981-09-01), Knopp et al.
patent: 4415451 (1983-11-01), Suzuki
patent: 4415454 (1983-11-01), Fuchs
patent: 4505813 (1985-03-01), Graves
patent: 4540528 (1985-09-01), Haegeman
patent: 4608157 (1986-08-01), Graves
patent: 4618426 (1986-10-01), Mandt
patent: 4663046 (1987-05-01), Feldkirchner et al.
patent: 4690764 (1987-09-01), Okumura et al.
patent: 4818404 (1989-04-01), McDowell
patent: 4844843 (1989-07-01), Rajendren
patent: 4956082 (1990-09-01), Choi
patent: 5190646 (1993-03-01), Hattori et al.
Rittmann, Aerobic Biological Treatment, 1987.
Tanaka, Oshima and Rittmann, Performance Evaluation of Rotating Biological Contactor Process, 1987.
NSF International, Wastewater Technology, Report on Evaluation of Scienco/FAST Model 23-001-750, Aug. 1992.
Scienco/FAST, Single Home FAST, Brochure and Engineering Data, Feb. 1992.
Banerji and CHO, Evaluation of a Small-Scale Biofilm Process for Wastewater Treatment, 1991.
Wang et al., A Study of Simultaneous Organics and Nitrogen Removal By Extended Aeration Submerged Biofilm Process, 1991.
Scienco, Industrial Product Data, Jul. 1986 and Various Scienco/FAST Brochures.
Iwai et al., Design and Operation of Small Wastewater Treatment Plants by the Microbial Film Process, 1990.
Paolini, A. E., Effect of Biomass on Oxygen Transfer in RBC Systems, Apr. 1986.
Paolini and Variali, Kinetic Considerations on the Performance of Activated Sludge Reactors and Rotating Biological Contactors, Feb. 1982.
Ouyang et al., Effects of Various Biofilm Processes for Treating High-Aged Landfill Leachate, Jun. 1991.
Hiavach et al., Submerged Biological Contactor Full-Scale Demonstration Studies of Operational Characteristics, Nov. 1990.
Chou et al., Field Performance of Three RBC Aeration Modes Treating Industrial Wastes, May 1980.
Backhurst et al., Rates of Oxygen Transfer Using a Model Surface Aerator, 1987.
MacLaren David S.
Tang Nianfa
Champagne Thomas M.
Jet Inc.
Roberts Jon L.
Wyse Thomas
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