Interaction between the treatment plant and the sewer system in Halmstad: Integrated upgrading based on real time control

  • Hernebring C
  • Ohlsson L
  • Andreasson M
 et al. 
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Abstract

In Halmstad, Sweden great efforts have been made during the 1990's to improve the functionality and to reduce the environmental impact of the sewer system and the wastewater treatment plant. The investment and rehabilitation program includes to a great extent an effective use of existing resources. The wastewater treatment plant is reconstructed to meet increased nutrient removal demands. A five year rehabilitation plan for the sewer system is under completion, where the measures mainly are motivated by the aim to reduce the combined sewer overflow volumes and to minimize the risk of local flooding. It was soon realized that an integrated use of storage volumes at the wastewater treatment plant and within the sewer system could improve the general conditions for the treatment at the plant. To implement this strategy a real time control system was introduced by installing controllable weirs and flow control devices in the main sewer. The article describes the background of the sewerage master plan, how the upgrading work has been carried out by means of simulations and measurement, gives examples of some expected potential benefits, and outlines plans for the future.

Author-supplied keywords

  • Combined sewer overflow
  • Flooding
  • Mouse
  • Pollution transport
  • Real time control
  • Sewer
  • Stoat
  • Tvp
  • Wastewater treatment plant

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Authors

  • C. Hernebring

  • L. Ohlsson

  • M. Andreasson

  • L. G. Gustafsson

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