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A benchmark study of controlled emptying of equalization basins

Publiceringsår: 2005
Språk: Engelska
Sidor: 113-121
Publikation/Tidskrift/Serie: Water Science and Technology
Volym: 52
Nummer: 12
Dokumenttyp: Artikel i tidskrift
Förlag: IWA Publishing


Storm tanks, or equalization basins, have been used for many years in sewer or wastewater treatment systems to reduce the amount of combined sewer overflows. In this paper, a systematic control of an equalization basin is used not only to dampen or reduce the hydraulic load, but also to systematically improve the effluent quality in a nitrogen removal plant. It is demonstrated that the effluent ammonia concentration is the key component. The Benchmark Simulation Model 1, implemented in MATLAB/Simulink, has been used to perform the evaluations. It has been extended with systematic rainfall generations. Intuitively, it is apparent that the equalization basin should be emptied before a rainfall. This requires a prediction capacity. It is shown that the choice of prediction time is by no means trivial and it is not true that a long prediction horizon is a,ways advantageous.


  • Other Electrical Engineering, Electronic Engineering, Information Engineering
  • integrated control
  • control strategies
  • equalization basins
  • wastewater


  • ISSN: 0273-1223

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