Results 261 to 270 of about 35,685 (305)

Design Verification for Tropical Oxidation Ponds

Journal of the Environmental Engineering Division, 1979
In this note the authors will present the results obtained in northeastern Brazil from a series of five pilot scale ponds each having a retention time of 5 days-7 days.
D. Duncan Mara, Beatriz S. de Ceballos, Salomao A. Silva   +2 more
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Enzymatic Evaluation of Oxidation Pond Performance

Internationale Revue der gesamten Hydrobiologie und Hydrographie, 1988
AbstractA one year study on a waste oxidation pond was undertaken to observe the behaviour of four enzymes, viz catalase, phosphatase, protease and amylase with respect to other ecological factors. The increase in solar radiation from March to May enhanced phytoplankton growth resulting in increased pH and DO and considerable reduction in nutrients and
B. B. Hosetti, H. S. Patil
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Some Design Considerations for Oxidation Ponds

Journal of the Sanitary Engineering Division, 1956
Factors which influence operation of oxidation ponds; design should be based upon proposed effiuent usage, BOD load, climatic characteristics and geographical location; uniform inlet and flow through distribution systems, bank stabilization and elimination of mosquito breeding places are of prime importance; BOD loadings up to 200 lb/Ac/D are possible.
Earnest F. Gloyna, Edward R. Hermann
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Tertiary Treatment of Wastewater Using Oxidation Ponds

1975
Abstract: The purpose of the project was to determine the value of using lagoons as a supplemental process for treating the effluent from an activated sludge wastewater treatment plant. Only tentative conclusions can be suggested since the project was not carried to completion.
Lauderdale, Robert A., Moeller, John R., Hamilton, Raymond D.   +2 more
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Mathematical Modelling of Wastewater Treatment in Oxidation Pond

Journal of Computational and Theoretical Nanoscience, 2019
Oxidation pond also known as shallow ponds designed to treat wastewater through the interaction of sunlight, bacteria and algae. In this research, wastewater treatment model was developed to study the effect of pH towards, COD, DO and PSB. Using the process rate of breakdown of organic and inorganic substance, mass transfer and oxygen and the growth ...
Nurul Nadiah Muhammad, Dennis Ling Chuan Ching, Amir Syafiq Syamin Syah Amir Hamzah   +2 more
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Maximizing Algal Yield in High-Rate Oxidation Ponds

Journal of the Environmental Engineering Division, 1982
One of the major problems in operating high-rate oxidation ponds (HROP) so as to give the maximal yield of algae is the determination of the best combination of retention time and effluent depth under varying environmental conditions. The criteria for choosing these variables were determined by applying the results previously obtained from pilot and ...
Gideon Oron, Gedaliah Shelef
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An Oxidation Pond as a Tertiary Treatment Device

Journal of the Sanitary Engineering Division, 1965
Tertiary treatment is becoming necessary to effect greater removal of BOD, solids, and coliform organisms from the effluents of conventional secondary wastewater treatment facilities. In addition, increasing emphasis is being placed on the removal of nitrogen and phosphorous from treated wastewater.
Raymond C. Loehr, Ralph L. Stephenson
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Nitrogenous compounds in facultative oxidation pond sediments

Water Research, 1977
Abstract The protein content of sludge samples from facultative oxidation ponds was measured and was found to have even distribution in the pond floor. Proteolytic activity which degrades protein to intermediate compounds, was found to be slightly higher near the pond inlet region. It was also shown that proteolytic activity increased with increasing
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Rheological problems and alternatives for existing oxidation ponds

Environmental Earth Sciences, 2016
A trace test and computational flow analysis were carried out in order to identify the flow characteristics of mine drainage in an existing oxidation pond. Consequently, despite the need for sufficient retention time of mine drainage to purify the mine drainage, the effective volume of an oxidation pond without any structure is too small and the time ...
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Suitability of metu oxidation pond effluent for irrigation

International Journal of Environmental Studies, 1991
The acceptability of oxidation pond effluent of Middle East Technical University (METU) wastewater treatment plant by soil for irrigation was investigated. Survey area belonged to the textural class of sandy clay loam. Test columns were prepared by undisturbed soil cores, chemical parameters were determined for soil, wastewater and column effluents ...
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