The dNF installation that produces drinking and process water from highly coloured surface water in Sweden.
The dNF installation that produces drinking and process water from highly coloured surface water in Sweden.

ProMinent has installed a water treatment system based on NX Filtration’s hollow fiber nanofiltration membranes to produce drinking and process water for the Forsmark power plant in Sweden.

The feed water is taken from a local, highly coloured lake with temperatures close to zero degrees Celsius in the winter. This feed water goes through a simple one step process consisting of, initially, 74 dNF40 hollow fiber nanofiltration modules from NX Filtration. The system removes bacteria, viruses and organics, including colour, from the lake water. The resulting product water is used for drinking water and for process water in the Forsmark power plant.

“We previously worked with NX Filtration’s technology for a bottled water application in eastern Europe and quickly understood that this disruptive technology could also address Forsmark’s water challenges,” said Jonas Lindqvist, sales manager at ProMinent. “With the use of NX Filtration’s MexPlorer test unit, we were able to quickly determine the potential of hollow fiber nanofiltration technology for Forsmark’s application. Compared to other alternatives, the hollow fiber nanofiltration technology showed significantly better performance with regards to organics removal.”

“We are proud to supply Forsmark with our innovative hollow fiber nanofiltration membranes, which enable a simple and sustainable process of producing clean and affordable drinking and process water,” said Robert Gerard, commercial director at NX Filtration. “Compared to traditional methods, we reduce the number of filtration steps, we avoid the use of chemicals in pretreatment and significantly reduce energy consumption during operation.”