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Wastewater Temperature Decrease in Pressure Sewers

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Abstract:

The centralization of wastewater treatment in large central treatment plants and the connection of sparsely populated areas to sewerage systems have increased the time wastewater is retained in sewers. These retention times lead to a decrease in wastewater temperature and affect wastewater treatment, especially the removal of nitrogen. In this study, temperature changes in long transfer sewers were examined. The temperature change was greatest at the end of winter and in the front part of the sewer. Temperature changes in the front parts of the sewers ranged from 0.16 to 0.27°C/km, and in the end parts from 0.02 to 0.10°C/km. When expressed in terms of the retention time for wastewater in the sewer, the temperature changes ranged from 0.12 to 0.17°C per retention hour.

Keywords: cold climate; municipal wastewater; sewers; temperature; temperature change; wastewater

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143008X276642

Publication date: December 1, 2008

More about this publication?
  • 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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