Hydraulic modelling of drinking water treatment plant operations
- 1PWN Water Supply Company North-Holland, P.O. Box 2113, 1990 AC, Velserbroek, The Netherlands
- 2Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Water Management, P.O. Box 5048, 2600 GA, Delft, The Netherlands
- 3KWR, Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, The Netherlands
- 4DHV, P.O. Box 1132, 3800 BC, Amersfoort, The Netherlands
- 5Delft Center for Systems and Control, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
- 6Vitens, P.O. Box 1090, 8200 BB, Lelystad, The Netherlands
Abstract. The flow through a unit of a drinking water treatment plant is one of the most important parameters in terms of a unit's effectiveness. In the present paper, a new EPAnet library is presented with the typical hydraulic elements for drinking water treatment processes well abstraction, rapid sand filtration and cascade and tower aeration. Using this treatment step library, a hydraulic model was set up, calibrated and validated for the drinking water treatment plant Harderbroek. With the actual valve position and pump speeds, the flows were calculated through the several treatment steps. A case shows the use of the model to calculate the new setpoints for the current frequency converters of the effluent pumps during a filter backwash.