Biological oxygen transfer enhancement in wastewater treatment systems
Abstract:The occurrence of biological oxygen transfer enhancement was investigated with samples of influent wastewater and wastewater solids collected from a nearby wastewater treatment plant. The potential mechanisms for the enhancement, namely, cell respiration, physical presence of solids, and wastewater modification, were studied in isolation by careful experimental design. The physical presence of nonrespiring solids was found to retard oxygen transfer, presumably because of the lower oxygen permeability in the solids layer accumulated near the bubble surfaces. On the other hand, cell respiration and wastewater modification enhanced the oxygen transfer rates. Overall oxygen transfer enhancements of approximately 20% were observed.
Document Type: Research Article
Publication date: 1995-07-01
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Water Environment Research� (WER�) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year. Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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