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NXF’s direct nanofiltration is proudly part of the water treatment plant of the future in Wilp (NL)

Dutch regional water authority ‘Valei en Veluwe’ wants to be fully circular by 2050. The development of the ‘Water Factory Wilp’ plays an important role in realizing this ambition. In June 2019 a large-scale pilot test has started which not only aims to reuse the water by industries and agriculture, but also aims to recover valuable nutrients such as celluloses, phosphor, and nitrogen for agricultural purposes.

NXF’s unique hollow fiber nanofiltration membranes play an important role in the total system in order to remove organics, including pharmaceutical residues, nano plastics and other micropollutants from the effluent stream. By preventing these chemicals from being discharged in the environment Vallei en Veluwe gives substance to the ambitions of the Dutch Ministry of Infrastructure and Water Management to improve the water quality in the Netherlands.

The use of this unique nanofiltration concept also enables efficient re-use of the effluent for various applications. Being part of the development of the water treatment plant of the future in Wilp makes all of us at NXF very proud, and we whish Vallei en Veluwe all the best in realizing their plans for a sustainable future.



Grundfos, Novozymes and NX Filtration collaborate for clean water. Enzymes, water technology and membranes are put together in a new open innovation collaboration. The aim is to remove pesticides and other contaminants from drinking water sources. Our innovative nanofiltration technology is capable of selectively removing small organic compounds from fresh water sources, which enables new applications such as the removal of pharmaceutical residues, pesticides and other contaminants in the production of drinking water. Combining our technology with the expertise of Novozymes and Grundfos, enables this collaboration to create something new, which can truly make a difference. 

Read more about this project on the HelloScience page or watch this video



MEDUWA (MEDicines Unwanted in WAter) develops innovative solutions to avoid emissions of pharmaceuticals and multi-resistant microorganisms into soil, water, air, and food.

Recently, a new project of the EU-funded Dutch-German Meduwa consortium in which NX Filtration (NXF) participates has been approved.  Focus of the NXF project will be on the development of a process using hollow fiber nanofiltration to remove micro-pollutants from surface water for the production of potable water. Another application that will be investigated is final treatment of municipal waste water prior to discharge meeting strict EU regulations.

The hollow fiber configuration is expected to reduce energy costs and reduce pretreatment of the membrane process and is expected to result in a significant reduction in capital as well as operating cost. Various municipalities and industrial clients have expressed interest in this new nanofiltration process with the ability to efficiently remove micro-pollutants.



Liberate is an European project carried out by an international consortium. The consortium received a grant from European Union’s Horizon 2020 programme to deliver a pilot scale Europe flagelectrochemical plant to demonstrate the commercial opportunities of converting low cost lignin feedstock in high value bio-sustainable chemicals.

The project partners are research centres and universities such as the Fraunhofer-Gesellschaft, TNO, SINTEF, Johannes Gutenberg University Mainz, University of Alicante, large enterprises like Evonik, Perstorp, and Oxiris, and SME’s including CHIMAR, Megara, NX Filtration, Condias, ENSO, Idener, and Gate2Growth. The project was officially launched on the 10th of October 2018 in Barcelona at Leitat’s headquarters.

LIBERATE will deliver a pilot scale electrochemical plant to demonstrate the commercial opportunities of converting low cost lignin, extracted from biomass such as wood, in high value bio-sustainable chemicals. Currently, lignin is being burnt for energy purposes, but LIBERATE aims to change that. NX Filtration’s nanofiltration technology will be one of the technologies used to extract basic chemicals for the European industry to produce valuable products such as polymers or antioxidants, currently coming from petrochemical industry.

“With LIBERATE, Europe goes a step further towards a circular economy model. It will make the industry less dependent from imported oil and reduce the impact of industries on the environment by reducing CO2 emissions and increase energy efficiency” says Angel Valdivielso, Project Technical Manager at Leitat.



Although we seem to be blessed in Western Europe with clean water from the tap, reports on issues related to drinking water quality are increasing at an alarming rate. It has been reported that the presence of micro-pollutants in water, such as pesticides, drug residues and hormone-disrupting compounds, have an effect on our health after long term exposure at small concentrations. This problem has also been addressed in the Water Framework Directive of the European Union. Current water treatment methods cannot effectively remove these micro-pollutants unless expensive, energy intensive processes are deployed.

NX Filtration has accepted this challenge and has spent the last two years developing a new generation of nanofiltration membranes aimed at removing these micro-pollutants. At the membrane technology research department of the University of Twente, new nanofiltration membranes were developed successfully at a laboratory scale. The basis of these membranes is a very thin, polymeric selective layer, which passes the pure water but rejects the micro-pollutants. This requires advanced polymers with a high charge-density, which were developed by the Department of Material Science and Polymer Technology of University of Twente.

In order to ensure the effective production of both the advanced polymers as well as the nanofiltration membranes, a sustainable and process intensive manufacturing method is required. The solution developed by NXF reduces the energy consumption in the membrane production by more than 50%. To accelerate this innovation, NX Filtration is working closely with Artecs, a local SME with proven expertise in polymer processing.

As a final validation, the membranes are installed in a system and tested by the water company Oasen. The installation is designed to minimize footprint and power consumption of the filtration process and will produce pure water as the final product. Sustainability is again the central theme in this process.

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