Research Article
Apr 1976
Pollutional Analysis of Combined Sewer Systems
Publication: Journal of the Environmental Engineering Division
Volume 102, Issue 2
Abstract
Mathematical models for sewer networks and wastewater treatment plants are used to simulate the BOD levels at different points in the treatment works and to combine sewer overflows under different conditions. The network and the treatment plant were simulated as a unit during an entire year's varying precipitation. Storm-water retention basins proved to be beneficial in reducing total pollution load discharged to the receiving waters only when the degree of pollution in storm-water runoff exceeds a specific limit. However, the effect of a retention basin increased considerably when the storm overflows and the basin outlet flows were set to an optimum setting, and when the size of the secondary clarifier was compatible with the retention basin. The simulations showed that retention basins could have an adverse effect on the discharge of BOD to the receiving water if the amount of BOD is removed by the storm overflow anyway.
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Information
Published In
Journal of the Environmental Engineering Division
Volume 102 • Issue 2 • April 1976
Pages: 301 - 312
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Apr 1976
Published online: Feb 11, 2021
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Authors
Affiliations
Oddvar Georg Lindholm
Research Environmental Engr., Norwegian Inst. for Water Research, Blinden, Norway
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.