Waterschap De Dommel (Netherlands) optimizes the urban wastewater system

Waterboard De Dommel and the City of Eindhoven intend to control storm water and waste water flows to a higher extent to efficiently meet the requirements of the European Union Water Framework Directive.

Rough cost estimations show that individually solving of these bottlenecks would require investments of about 150 to 200 million EUR. With the KALLISTO project, by applying an innovative combination of monitoring, modelling and controlling water flows and constructing adequate technical measures like pumping an advanced treatment facilities, the storm water and waste water flows will be actively controlled based on water quality and quantity in the receiving water (so-called pollution load control).

By applying this integrated and high technology approach, it is expected to save approximately 10 pct. to 30 pct. of the total costs. Based on detailed hydrodynamic models, a fully integrated simplified model including the sewer, the WWTP and the river is implemented by WATERWAYS in WEST, with special focus on water quality. This allows to overcome:

• The communication problem typical of linking different software, reducing the possible scenarios to be run, especially regarding integrated real-time control;
• The simulation speed problem of the detailed models, reducing the time needed to run each (long term) scenario by several orders of magnitude, even allowing to run Monte Carlo simulations.