Liquid purification or separation – Processes – Treatment by living organism
Patent
1996-03-14
1997-07-29
Upton, Christopher
Liquid purification or separation
Processes
Treatment by living organism
210622, 210624, 210903, 210629, C02F 330
Patent
active
056518927
ABSTRACT:
A method of treating municipal or industrial wastewater containing undesired concentrations of ammonium or nitrate ions comprising treating the wastewater under anoxic, denitrifying conditions with denitrifying bacteria to reduce the concentration of nitrate ion and produce nitrogen gas and a denitrified liquor; treating the denitrified liquor in an aerobic vertical shaft bioreactor with an oxygen-containing gas to effect BOD removal by the bioxidation of organic compounds in the denitried liquor and produce carbon dioxide off-gas and a shaft bioreactor effluent liquor; clarifying a first portion of the shaft bioreactor effluent liquor to provide a first clarified liquor and a second portion of the shaft bioreactor effluent liquor to provide a second clarified liquor; treating the first clarified liquor under aerobic, nitrifying conditions with nitrifying bacteria, an oxygen-containing gas and the off-gas to oxidize ammonium ion to nitrate ion and provide a first nitrified liquor; recycling by adding the first nitrified liquor to the wastewater under step (a); treating the second clarified liquor under aerobic, nitrifying conditions with nitrifying bacteria, an oxygen-containing gas to oxidize ammonium ion to nitrate ion and provide a second nitrified liquor; and removing the said nitrified liquor as plant effluent.
REFERENCES:
patent: 3957632 (1976-05-01), Knopp et al.
patent: 3964998 (1976-06-01), Barnard
patent: 4425231 (1984-01-01), Fujimoto et al.
patent: 4780208 (1988-10-01), Bohnke et al.
patent: 5022993 (1991-06-01), Williamson
patent: 5098572 (1992-03-01), Faup et al.
patent: 5252214 (1993-10-01), Lorenz et al.
patent: 5290451 (1994-03-01), Koster et al.
patent: 5342522 (1994-08-01), Marsman et al.
patent: 5518618 (1996-05-01), Mulder et al.
patent: 5531896 (1996-07-01), Tambo et al.
Deep Shaft Technology Inc.
Upton Christopher
LandOfFree
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