Liquid purification or separation – Processes – Treatment by living organism
Patent
1987-03-17
1987-09-08
Wyse, Tom
Liquid purification or separation
Processes
Treatment by living organism
210622, C02F 308
Patent
active
046922504
ABSTRACT:
An improved wastewater treatment process is provided which utilizes a rotating biological contactor (RBC) containing at least two stages as the secondary treatment phase. In such RBC, biological oxidation of carbonaceous and nitrogenous matter is accomplished simultaneously in a partially submerged aerated RBC arranged for multiple stage treatment. Wastewater being charged to the RBC is preliminarily subjected to particulate separation and admixing with biologically treated and the clarified effluent from the RBC at a rate sufficient to produce a wastewater feed to the RBC system which has approximately acceptable standards of SBOD.sub.5 and NH.sub.3 -N. The process also features a high flow rate of the diluted wastewater through the RBC.
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E. D. Smith and J. T. Bandy, "A History of the RBC Process", pp. 11-26.
Shankha K. Banerji, "ASCE Water Pollution Management Task Committee Report on `Rotation Biological Contactor for Secondary Treatment`", pp. 31-52.
C. C. Chou, R. J. Hynek, R. A. Sullivan, "Comparison of Full Scale RBC Performance with Design Criteria", pp. 1101-1125.
T. Viraraghavan, R. C. Landine, E. Winchester, & G. H. Jenkins, "Design and Operation of Two Rotating Biological Contactor Plants at Fundy Natl. Park, New Brunswick, Canada", pp. 1137-1146.
K. Ito and T. Matsuo, "The Effect on Organic Loading on Nitrification in RBC Wastewater Treatment Processes," pp. 1165-1175.
Hallvard Odegaard & B. Rusten, "Nitrogen Removal in Rotating Biological Contactors Without the Use of External Carbon Source," pp. 1301-1317.
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