Surface water nanofiltration: comparison of the performances of two nanofiltration membranes with two antiscalants

This study compares the performance of two nanofiltration (NF) membranes and two antiscalants injected upstream of the NF system. The pilot unit is installed at the Choisy-le-Roi drinking water treatment plant (DWTP) located in the suburbs of Paris, France on behalf of the Syndicat des Eaux d?Ile de- France (SEDIF). This DWTP treats river water under a conventional process comprised of pre-ozonation, coagulation/flocculation/sedimentation, sand filtration, ozonation, GAC adsorption and chlorination.