Drinking Water Engineering and Science www.drink-water-eng-sci.net 1996-9457 1996-9465 2 1 2009 10.5194/dwes-2-15-2009 http://www.drink-water-eng-sci.net/2/15/2009/ http://www.drink-water-eng-sci.net/2/15/2009/dwes-2-15-2009.html http://www.drink-water-eng-sci.net/2/15/2009/dwes-2-15-2009.pdf 15 20 2009-06-10 Hydraulic modelling of drinking water treatment plant operations G. I. M. Worm ignaz.worm@pwn.nl G. A. M. Mesman K. M. van Schagen K. J. Borger L. C. Rietveld PWN Water Supply Company North-Holland, P.O. Box 2113, 1990 AC, Velserbroek, The Netherlands Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Water Management, P.O. Box 5048, 2600 GA, Delft, The Netherlands KWR, Watercycle Research Institute, Groningenhaven 7, 3433 PE, Nieuwegein, The Netherlands DHV, P.O. Box 1132, 3800 BC, Amersfoort, The Netherlands Delft Center for Systems and Control, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands Vitens, P.O. Box 1090, 8200 BB, Lelystad, The Netherlands 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. Daugherty, R. L., Franzini, J. B., and Finnemore, E. J.: Fluid mechanics with engineering applications, 8 Ed., McGraw-Hill Book Company, New York, 598 pp., 1985. De Moel, P. J., Verberk, J. Q. J. C., and Van Dijk, J. C.: Drinking water : principles and practices, World Scientific Publishing Co. Pte. Ltd., Delft, 413 pp., 2006. Fontenot, E., Ingeduld, P., and Wood, D.: Real Time Analysis of Water Supply and Water Distribution Systems, World Water and Environmental Resources Congress, Philadelphia, Pennsylvania, 443–452, 2003. Gallard, H., Von Gunten, U., and Kaiser, H. P.: Prediction of the disinfection and oxidation efficiency of full-scale ozone reactors, J. Water Supply Res. T., 52, 277-290, 2003. Hranisavljevic, D., Mazounie, P., MacLean, G. W., and Cox, R. J.: Cooperation between private enterprise and applied research – Prospect Water Filtration Plant, Water Supply, 17, 425–430, 1999. Martínez, F., Hernández, V., Alonso, J. M., Rao, Z., and Alvisi, S.: Optimizing the operation of the Valencia water-distribution network, J. Hydroinform., 9, 65–78, 2007. Rorabaugh, M. I.: Graphical and theoretical analysis of step-drawdown test of artesian well, American Society of Civil Engineers, Ann Arbor, Mich., 1953. Rossman, L. A.: EPANET 2 Users manual, National Risk Management Research Laboratory, Water supply and water resources division, Cincinnati, 138, 2000. Thiem, G.: Hydrologische methoden, J M Gebhardt's Verlag, Leipzig, 1906. Van Schagen, K. M., Babuska, R., Rietveld, L. C., and Baars, E. T.: Optimal flow distribution over multiple parallel pellet reactors: A model-based approach, Water Sci. Technol., 53, 493–501, 2006. Van Schagen, K. M.: Model-based control of drinking-water treatment plants, PhD thesis, Delft, 2009. Worm, G. I. M., Van der Helm, A. W. C., Lapikas, T., Van Schagen, K. M., and Rietveld, L. C.: Integration of models, data management, interfaces, and training and decision support in a drinking water treatment plant simulator, Environ. Modell. Softw., \mboxaccepted for publication, 2009.