PARTNER IN WATER SUPPLY

PWNT is wholly owned by Nijhuis Saur Industries (NSI). Through its inception as a daughter of PWN it valorized the utilities’ 100 years of experience to develop innovative technologies. Now as a subsidiary of NSI, it is in an improved position to bring those technologies to utilities worldwide. Our extensive R&D programmes have led to the development of efficient and sustainable solutions in water treatment based on suspended ion exchange, ceramic membrane applications and advanced oxidation, applications that can be used for a wide variety of water sources.

All our solutions offer lower life cycle costs, greater efficiency and much lower environmental impact. We work closely with our clients to create optimal results and strongly believe in partnering with highly recognized universities and globally respected companies. PWNT is located in the Netherlands and Singapore.

Latest Video

PWNT acquisition by Nijhuis Saur Industries (NSI) completed; Clement Pierart appointed as new CEO

The Netherlands, 30 August 2022 – With the acquisition process of PWNT by NSI completed, PWNT are now officially part of the Saur Group within their Industrial Water Solutions division. This means that PWNT is…

World’s largest ceramic membrane-based water treatment works in development using PWNT innovations

The United Kingdom’s South Staffs Water, a regulated clean-water company, serving 1.3 million people and 35,000 businesses, is upgrading its Hampton Loade Water Treatment Works using PWNT’s CeraMac® technologies. Once completed in August 2024, it…

CeraMac® in the May/June 2022 edition of Water & Wastewater Asia

Find out more about the Science and #Sustainability behind PWNT‘s CeraMac® innovative water treatment system in the May/June 2022 edition of Water & Wastewater Asia, in an editorial contributed by Reinout Holland and Holly Shorney-Darby,…

PWNT at the Singapore International Water Week 2022, Singapore

PWNT returns as a Founding Sponsor of the Singapore International Water Week 2022 in support of the event’s aims to promote water industry innovation and collaboration to solve the world’s water challenges. As a Founding…

Nijhuis Saur Industries acquires PWNT

With the acquisition of PWNT, the commercial subsidiary of the North Holland drinking water company and nature manager PWN, Nijhuis Saur Industries is strengthening its portfolio for the purification of drinking water. PWNT was specially…

Proven technologies

In today’s global markets innovative ideas are not enough.
Innovations that are validated, proven and work are true assets.

Our solutions

Integrated Solutions

With SIX®, Ceramic Micro Filtration, UV H2O2 treatment and GAC filtration as unique, innovative components for fully integrated, sustainable water treatment processes, based on process fundamentals, mathematics and hydraulics and real world testing, PWNT experts are able to provide end-users with custom-oriented solutions.

CeraMac®

CeraMac® is a well designed and engineered filtration process based on ceramic membranes. By combining up to 90 ceramic membrane elements into one vessel, the application of ceramic membranes becomes a highly economical and compact solution.

SIX®

SIX® stands for Suspended Ion eXchange process and is designed to remove Dissolved Organic Carbon (DOC) from the water to improve membrane filtration performance. SIX® also removes sulphate, nitrate, and phosphate. Removal of DOC minimizes membrane fouling and reduces the formation of trihalomethanes (THMs) after final disinfection with chlorination.

ILCA®

PWNT’s In-Line Coagulation and Adsorption (ILCA®) process was developed to minimise coagulation/flocculation footprint and to simplify pre-treatment upstream of CeraMac®. For most surface waters, coagulated feed water lowers the ceramic membrane fouling rate, but strong, large, setting flocs are not required for filtration with ceramic microfiltration.