Research Article
Apr 1979
Real-Time Control of Activated Sludge Process
Publication: Journal of the Environmental Engineering Division
Volume 105, Issue 2
Abstract
A technique for real-time control of the activated sludge process using specific oxygen uptake rate (SCOUR) has been developed. Mathematical modeling and computer simulation techniques were used to develop multivariant control strategies using SCOUR and mean cell retention time as the controlled variables, and manipulating sludge recycle rate, sludge wasting rate, and wastewater feed point location. It is shown that SCOUR is a valid indicator of process efficiency and sludge activity for nonsteady state operation, and that multivariant control techniques using SCOUR are superior to techniques that use only food-to-mass ratio, or mean cell retention time. It is also shown that SCOUR can be used to detect shock loads of toxic and biodegradable materials. The value of forecasting flow rates for improving control is illustrated through the use of time-series models.
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Information
Published In
Journal of the Environmental Engineering Division
Volume 105 • Issue 2 • April 1979
Pages: 245 - 260
Copyright
© 1979 American Society of Civil Engineers.
History
Published in print: Apr 1979
Published online: Feb 11, 2021
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Authors
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Michael K. Stenstrom, AM.ASCE
Asst. Prof.; Engrg. Systems Dept., Univ. of Calif., Los Angeles, Calif., USA
John F. Andrews, M.ASCE
Prof.; Dept. of Civ. Engrg., Univ. of Houston, Houston, Tex., USA
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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.
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.