NX Filtration, the global provider of breakthrough filtration technology, has entered a strategic collaboration with TZW-DVGW (Technologiezentrum Wasser, German Water Centre) for a pioneering project aimed at addressing the challenge of PFAS (Per- and Polyfluoroalkyl Substances) removal from drinking water, with minimal energy and chemical dosing.
PFAS, commonly known as “forever chemicals,” are extensively used in various products such as clothing, cosmetics, electronics, and chemical goods. The persistent nature of PFAS in the environment, coupled with known health concerns, has led to growing apprehension. In response to the escalating concerns, Germany implemented a new drinking water regulation in June 2023. This regulation mandates compliance with PFAS-group limits, with specific deadlines set for PFAS20 by January 2026 and PFAS4 by January 2028.
Activated carbon and reverse osmosis have been deliberated as potential solutions for PFAS removal. However, activated carbon is facing increasing scrutiny due to its carbon footprint and limited PFAS sorption capability. Reverse osmosis demands extensive pretreatment and has high energy requirements. In addition, reverse osmosis (RO) typically requires the application of antiscalants and remineralization as post-treatment.
NX Filtration offers an alternative solution with its Hollow Fiber Nanofiltration (HFNF) technology, also referred to as capillary NF or direct nanofiltration (dNF). This method presents an option for water treatment facilities seeking to retain PFAS, as it significantly reduces energy consumption and eliminates the need for pre-treatment and additional treatment chemicals. The efficacy of HFNF in PFAS removal has been substantiated by a comprehensive study conducted by KWR.
Mrs. Pia Lipp (Ph.D) from TZW-DVGW commented, "Collaborating with NX Filtration on the ‘KapillO-PFAS’ project represents a significant step forward in our mission to find sustainable solutions for PFAS removal. The combination of TZW-DVGW's research capabilities and NX Filtration's innovative technology holds great promise in addressing the challenges posed by PFAS in drinking water."
Initiated by TZW-DVGW, the "KapillO-PFAS" project aims to evaluate the performance and economic viability of HFNF for PFAS removal through extensive pilot tests at five waterworks across Germany. The project encompasses both laboratory-scale and pilot-scale tests over three months at each location.
Mr. Jörg Winter (Ph.D), sales manager from NX Filtration stated, "We are excited to contribute our expertise and innovative HFNF technology to the 'KapillO-PFAS' project. This collaboration reaffirms our commitment to sustainable water solutions and underscores the role of advanced filtration technologies in addressing emerging challenges in the water industry."
The first pilot trial will commence with the commissioning of a Mexpert testing unitat a waterworks of Hessenwasser GmbH & Co. KG. Subsequent results from the five test sites will be used to predict the performance and economic feasibility of HFNF at other sites requiring PFAS treatment solutions.
About NX Filtration
NX Filtration is a provider of hollow fiber nanofiltration membrane technology for producing pure and affordable water to improve quality of life. Its HFNF membrane technology removes micropollutants (including pharmaceuticals, medicines, PFAS and insecticides), color and selective salts, but also bacteria, viruses and nanoplastics, from water whilst offering strong sustainability benefits. For further information on NX Filtration visit www.nxfiltration.com.
About TZW-DVGW:
TZW’s comprehensive research activities and practical experience form the basis of solutions and concepts for all areas of national and international water management issues. These range from resource protection to water catchment and treatment to the water supplying consumers' taps. About 190 highly qualified staff members cooperate closely with water works, companies,
authorities, and universities. TZW supplies reliable figures, data and facts, and creates solutions for a sustainable water supply. As TZW is part of German Technical and Scientific Association for Gas and Water (DVGW), it is a nonprofit and independent institution. For further information visit https://tzw.de/en/.
