Behaviour of Particles in a Network; Test Rig Results

of Technology. During my Master's courses, I decided to do my graduation project on drinking water. After doing an internship in Australia about the quality of drinking water and the behaviour of particles in drinking water transport mains, my attention was attracted. Back in the Netherlands I could join the Q21 project, about water quality in the 21st century. With great pleasure I worked on my project about sedimentation and resuspen-sion of particles in drinking water mains. Before continuing with my thesis, I would like to thank some people who have been of great help during my Master's project. I would like to thank my graduation committee. Prof. van Dijk had useful comments and remarks during the meetings of Q21 and the drinking water colloquia. Furthermore, it was always possible to discuss results or measurement methods with him. Jan Vreeburg supported me on a daily base and answered my questions in no time. Jasper Verberk had critical remarks, which made me consider the matter from all sides. With Wim Uijttewaal I had useful discussions about the hydraulics of the new test rig. Building a test rig never ends. After each experiment, it became necessary to build a new pipe, valve or measuring point. Tonny Schuit and Cees Boeter were always there to help me optimising the test rig. Especially Cees Boeter worked days on the test rig. Without him my test rig would be a big mess of tubes, hoses and tie raps. KIWA Water Research supported me financial and provided me with a particle counter and a turbidity meter. My last (but not least) thanks go to my parents, who are always very in-ii Preface and Acknowledgments terested in what I am doing. Renze always has time to help me with the English language, making this report in L A T E X, opening valves that were too tightly for me. Beside that, he was able to motivate me when things were not going as I wanted.