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Impact of particles on sediment accumulation in a drinking water distribution system |
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| Authors: | Vreeburg J H G Schippers D Verberk J Q J C van Dijk J C |
| Affiliation: | a Kiwa Water Research, University of Technology Delft, P.O. Box 1072, 3430 BB Nieuwegein, The Netherlands b University of Technology Delft, Faculty of Civil Engineering and Geo Sciences, Department of Water Management, P.O. Box 5048, 2600 GA Delft, The Netherlands c Vitens Water Company, P.O. Box 400, 8901 BE Leeuwarden, The Netherlands |
| Abstract: | Discolouration of drinking water is one of the main reasons customers complain to their water company. Though corrosion of cast iron is often seen as the main source for this problem, the particles originating from the treatment plant play an important and potentially dominant role in the generation of a discolouration risk in drinking water distribution systems. To investigate this thesis a study was performed in a drinking water distribution system. In two similar isolated network areas the effect of particles on discolouration risk was studied with particle counting, the Resuspension Potential Method (RPM) and assessment of the total accumulated sediment. In the ‘Control Area’, supplied with normal drinking water, the discolouration risk was regenerated within 1.5 year. In the ‘Research Area’, supplied with particle-free water, this will take 10-15 years. An obvious remedy for controlling the discolouration risk is to improve the treatment with respect to the short peaks that are caused by particle breakthrough. |
| Keywords: | Particle counting Drinking water distribution systems Ultrafiltration Discolouration Corrosion |
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