Bas Wols works as a scientific researcher on the KWR drinking water treatment team. He models water purification processes such as UV/H2O2 oxidation, membrane filtration, sand filtration, softening and aeration. He uses CFD modelling to characterise the water flow. The CFD models are combined with physico-chemical models to simulate the effect of the purification. This way, the UV/H2O2 system designs were improved. Furthermore, Bas works a lot on modelling the distribution network as well. He developed models to calculate the pressure in pipelines as a result of all kinds of impact, such as internal pressures, traffic and settings. Bas also uses statistical models. These are used to research correlations between climate and pipe failures and to determine correlations between chemical substances and the purification efficiency. In addition, Bas also works as a project manager for various projects and as a theme coordinator for the Joint Research Programme ‘drinking water technology of the future’ theme group.