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Nijhuis Saur Industries

At Nijhuis Saur Industries (NSI), innovation isn’t just a department — it’s in our DNA since 1904.

In a world facing urgent challenges like climate change, aging infrastructure, rapid urbanization, and growing resource scarcity, we’re redefining (waste)water treatment and resource recovery.

Every day, our dedicated R&D technologists, engineers, and consultants work together to develop game-changing solutions and create value from water and waste.

We are not doing this alone: We work in close partnerships with recognized institutions, universities and utilities in the global water sector.

Why innovation matters

Choosing NSI means choosing a partner who thinks beyond tomorrow. Our patented technologies and award-winning solutions are renown worldwide for their performance, reliability, and sustainability. But what truly sets us apart is our mindset — constantly questioning, improving, and inventing. Whether it’s developing new solutions and applications purifying complex industrial wastewater or recovering valuable raw materials, we innovate to make a real difference as part of our #missionwater strategy: giving water the value it deserves.

From idea to impact

Innovation at NSI is powered by a unique ecosystem of people, facilities, and partnerships. Our state-of-the-art laboratory and pilot testing facilities allow us to simulate real-water treatment plant conditions and accelerate time-to-market. With expertise spanning engineering, chemistry, microbiology, and consultancy, our multidisciplinary teams collaborate seamlessly to turn bold ideas into proven technologies.

Our most successful innovations and applications include:

  • Circular resource recovery solutions, from biogas to nutrients
  • Advanced anaerobic and aerobic treatment technologies
  • Valuable resource chains, powered by smart partnershipsand our own group companies (e.g. cellulose and nitrogen recovery)

  • Integrated treatment approach both for drinking water or reuse with e.g. ion exchange, coagulation, advanced oxidation and membrane filtration
  • Compact pre-treatment systems like the high-rate dissolved air flotation (DAF)
  • Compact decentralized water reuse concepts for building facilities

Industry recognition

Our innovations have not gone unnoticed. NSI received several prestigious awards, this includes:

Global Water Intelligence (GWI) Awards

for reuse, drinking water and technologies

Aquatech Innovation Awards

decentralized concepts and cellulose recovery

the Golden Lion Award

for CanalCafe: from canal water to espresso

BlueTech Lighthouse Award

cellulose recovery

WEX Global 2022 Award

CellCap

Regional awardings

For example the Dutch ‘Achterhoek Open Innovatie Prijs’ for micropollutants removal and the Stena Circular Economy Award for a water reuse project.

A future-forward strategy

We don’t just respond to challenges — we anticipate them. Our innovation strategy is built on continuous learning, strategic partnerships, and a firm belief in creating value through circularity. By investing in R&D, scaling emerging technologies, and co-creating with clients, we ensure that you work with a global leader and pioneer in sustainable water solutions — today and in the future.

All based on a proven and well-funded strategy, staying ahead of the curve and turning complex problems into easy and adaptable solutions.

NSI Academy

Do you want to be inspired and updated on the latest trends and insights? Understanding the value of water? Or in-depth training about a specific water treatment system? Contact us and perhaps one of our water champions can share their expertise and experience with you, either digitally or at one of your locations.

Ideal for: client, schools/universities, reference visits, tours