As yet, filtration of wastewater treatment effluent has not been practised in the Netherlands. The main objections were the expected high costs. In order to gain practical experience an investigation programme studied the applicability and optimization of effluent filtration. Especially multi-layer filtration with the addition of ironchloride seemed to be very effective. Very low concentrations of suspended solids and phosphorus were achieved, even at high filtration rates (up to 30 m/h). This leads to an impressive reduction of expected costs, down to Dfl. 0.02/m3 (treated water).
Experiments on high rate effluent filtration in the Netherlands
Jaap H. J. M. van der Graaf, Arjen F. van Nieuwenhuijzen; Experiments on high rate effluent filtration in the Netherlands. Water Sci Technol 1 August 1998; 38 (3): 127–134. doi: https://doi.org/10.2166/wst.1998.0191
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