Liquid purification or separation – Processes – Treatment by living organism
Patent
1986-03-06
1988-12-27
Wyse, Tom
Liquid purification or separation
Processes
Treatment by living organism
210626, 210903, 210906, C02F 312
Patent
active
047939303
ABSTRACT:
Waste water purification employing the activated sludge process with batch-wise waste water feed to the aeration tank. There is continuous aeration and water discharge from the tank. The process has a fixed dosing cycle based on historical values for the curve of the bacterial activity with the batch-wise waste water feed or a function of indicator values for this activity, specifically as a function of the oxygen concentration in the tank through an appropriate control, which briefly opens the waste water feed when, for example, an oxygen electrode indicates that an adjustable limit value has been exceeded. By means of such an oxygen electrode, an alarm signal can simultaneously be tripped if the high oxygen consumption expected after the admission of the waste water does not occur. The process is specifically useful for the treatment of waste waters which tend to form too much bulking sludge.
REFERENCES:
patent: 4303527 (1981-12-01), Reimann et al.
patent: 4437992 (1984-03-01), Saito et al.
patent: 4504393 (1985-03-01), Davies
"The Oxidation of Sewage Without the Aid of Filters. Part II.", E. Ardern, . Soc. Chem. Ind. 33 (1914) pp. 1122-1124.
"Nitrification on the Sequenching Batch Biological Reactor", Alleman, J. Water Pollut. Control Fed. 51 (1980) pp. 2747-2754.
"Continuous Intermittent Wastewater Systems for Municipal and Industrial Effluents", Publ. Health Eng. 8 (1980) 20.
"Treatment of a High-Strength Industrial Waste in a Continuously Fed, Intermittently Operated, Activated Sludge System", B. A. Bell, J. Water Pollut. Control Fed. 56 (1984) pp. 1160-1164.
"Relation Between Substrate Feeding Pattern and Development of Filamentous Bacteria in Activated Sludge Processes" E. Van den Eynde, Europ. J. Appl. Microbiol. Biotechno. 15 (1982) pp. 246-251.
Hofmeister Franz
Keusen Heinrich
Soeder Carl J.
Zanders Erich
Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftun
Ljungman Nils H.
Wyse Tom
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