Nijhuis Saur Industries
About us
Nijhuis Saur Industries
Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy and resource recovery for Light and Heavy Industries, Utilities, and Commercial Buildings around the world.
With Nijhuis Saur Industries being mainly responsible for the division, we deliver an extensive portfolio of innovative technologies, game-changing solutions and added-value services to protect water resources. With our unique Customer for Life approach, we help industries, utilities, and cities to comply with 'reduce, remove, reuse and recover', closing the water loop.
We deliver innovative technologies, engineering and consulting services, mobile water solutions, EPC / DBFOM project execution and O&M site services. Our portfolio of water solutions is based on the extensive knowledge and experience of Nijhuis, Econvert, Unidro, Nortech, Riventa, PWNT, Byosis, Sodai, Flootech, Aqua-Chem and NSI Mobile Water Solutions Europe.
Products
Portfolio Services and Solutions Nijhuis
In attachment you find our portfolio brochure with an overview of our Services & Solutions
Nijhuis MicroOxi
Micropollutants are persistent contaminants originating from everyday activities, posing a serious risk to water quality. Treating wastewater contaminated with these substances is highly complex, and there is no universal solution. Achieving effective removal requires a customized combination of technologies, carefully aligned with the specific characteristics of the wastewater and local regulatory requirements. Nijhuis Saur Industries has developed the MicroOxi solution to support WWTPs in addressing micropollutant challenges with sustainable, client-focused approaches. Depending on the local context, we apply an optimized mix of oxidation technologies, including BODAC. Our method is designed to minimize both total cost of ownership and environmental impact. With our extensive portfolio of micropollutant-removal technologies, we ensure the selection of the most suitable solution to meet your removal targets and resilience requirements.
Nijhuis Membrame Solutions
Nijhuis Membrane Solutions (NMS) offers a complete range of high-quality membrane technologies that help organizations reduce water consumption, lower their carbon footprint, and optimize the reuse of water streams. The modular systems are designed for maximum efficiency, reliability, and future-proofing, with applications in diverse sectors such as food & beverage, industry, microelectronics, and municipal water treatment. NMS solutions include MBR, UF, NF, and RO technologies, ranging from biological purification to ultrafiltration, nanofiltration, and reverse osmosis. They effectively remove suspended solids, organic contaminants, microorganisms, dyes, microplastics, and specific ions. This results in high-quality effluents suitable for reuse, drinking water production, or safe discharge. All systems are designed with a focus on sustainable performance: low energy consumption, minimal chemicals, compact design, and expandability for future capacity requirements. Thanks to in-house skid production and high-quality Dutch engineering, the installations meet the strictest industry standards, with optional drinking water certification. NMS supports companies on their journey to circular water management, zero liquid discharge, and cost-efficient water management – with reliable, flexible, and fully integrated membrane solutions.
ByoFlex® Nitrogen Recovery Stripper System
Resource recovery from ammonia With the rising demand for circular resources to reduce nitrogen and CO2 emissions, stripping technology can be applied to turn waste streams into valuable resources. Based on optimizing resource value and operational digester challenges, the ByoFlex® - a system from NSI Byosis - recovers ammonia from highly contaminated substrates. This can maximize biogas production while reducing discharge costs simultaneously. NSI Byosis combines and translates its extended knowledge of digestion and fermentation processes into practical and feasible solutions. Byosis offers solutions that considerably improve the efficiency and capacity of the digestion process, presenting a perfect alternative for anammox. Your ByoFlex® benefits +Reduces N2O and CO2 footprint: avoid conventional nitrogen oxidation. +Reduces the risk of clogging due to a robust and patented design. +Reduces discharge and treatment costs for nitrogen to the sewer or river. +Removes highly concentrated ammonia streams and difficult digestate substrates from wastewater sludge or manure. +Reuses centrate water to improve biogas digester performance by lowering the N-content through the treatment of recycled dilution water. +Recovers a valuable liquid circular fertilizer: ammonium sulphate or ammonium nitrate. The ByoFlex® system reduces discharge costs and recovers nitrogen to be used as a valuable fertilizer. Read More in attached brochure.
CeraMac® Cost-effective ceramic membrane design
CeraMac® is an innovative and cost-effective ceramic membrane filtration process designed by PWNT. This design enables the economically viable use of ceramic membranes on surface water for large-scale applications, as well as for reuse and desalination applications. CeraMac® offers a compact proprietary system with multiple membranes mounted in one vessel. This reduces the cost of the ceramic membrane system to a level that makes the cost of the system competitive. CeraMac® offers a compact proprietary system with multiple membranes mounted in one vessel. This reduces the cost of the ceramic membrane system to a level that makes the cost of the system competitive. The advantages of ceramic membranes are: -No fiber breakage - Indefinite service life (proven > 20 years with continuous use) -Use of ozone upstream of the membrane for cleaning -Possibility to use strong chemicals to clean the membrane and prevent fouling -Using high rewind speeds to restore permeability - Narrow pore size distribution -Sustainable materials, without plastic -Potential for high throughput with small footprint compared to other technologies CeraMac® offers the following benefits: -Very small footprint -Low energy consumption -High reliability -Low maintenance -Powerful backwash, at a pressure of 5 bar -High productivity > 95%.
Mobile Water Solutions: One reliable supplier, three different services
One reliable supplier, three different services With 25 years of experience, Mobile Water Solutions (MWS), part of the Nijhuis Saur Industries, is a leading provider of temporary water and wastewater treatment solutions pre-packaged on a trailer, skid, or container for maximum mobility and rapid response. Our mission is to be the mobile water services provider of choice and exceed your expectations by offering you a cost-efficient alternative to fixed installations and ensuring continuity of water supply to your core operations. We apply the latest technologies to your context to meet your requirements. Available as modular systems, our modern fleet is pre-engineered with plug-and-play connections for ease of use and an unrivaled guarantee for quality and quantity of water. To help you achieve your objectives in various industrial situations and circumstances, MWS offers three flexible services: ● Emergency where an existing plant has failed ● Planned commissioning, refurbishment, or maintenance projects ● Multi-Year requirements for continuous water supply For more information, contact the Mobile Water Solutions team: Email: mws@nijhuisindustries.com
Industrial and Municpal Water Re-Use
Ultra Filtration (UF) membranes The skid-mounted UF technology offers a superior barrier for viruses and bacteria removal and a solid pre-treatment for reverse osmosis. The small pore size ensures reduced membrane fouling. Our DEEPEST technology containing titanium membranes (TiO2 membranes) consists of an internal titanium liner combining unique properties with top-level performance for difficult to treat wastewater. Direct Nano Filtration (dNF) membranes With the dNF, minimum pre-treatment is required. This unit can be implemented to remove color, bacteria and viruses for drinking water and wastewater applications in one single step: without pre-treatment and without the use of chemicals. • Reverse Osmosis (RO) membranes The reverse osmosis technology has maximal efficiency due to a smart design and high quality execution of the skid. The unit removes dissolved components, such as ions, heavy metals, TOC and viruses. • Ceramic membrane (CeraMac®) CeraMac® is an innovative and cost-effective ceramic membrane filtration process to produce drinking water. This design allows the economically feasible use of ceramic membranes on surface water for large-scale applications, as well as in reuse and desalination pre-treatment applications. • Electro-deionization (EDI) Electro-deionization is a continuous process used to polish deionized water, a chemicals-free alternative to conventional resin mixed bed exchangers. It is a form of deionization that uses electricity to remove the ions from the water. • Suspended ion exchange process (SIX®) SIX® is a suspended ion exchange process as an alternative to coagulation for organics removal. It is suitable for treating surface waters to remove dissolved organics. Brine Treatment Solutions (MLD / ZLD) • Evaporator (No-Briner) Modular innovative plastic multi-effect evaporator with exchangeable cartridges • Concentrator Evaporator for brine of RO concentrates
Our vacancies
Join a team that is shaping the future of water. We create sustainable solutions that earn trust and deliver lasting value. We are more than water experts, we are community builders, forward-thinkers, and passionate professionals united by a shared #missionwater; giving water the value it deserves. Check the website to see if there is a vacancy for you. Is there nothing for you, but would you like to express your interest? Send an email to careers.nl@nijhuisindustries.com
Econvert Anaerobic solutions
Econvert Water & Energy, part of Nijhuis Saur Industries, offers the following solutions: - Anaerobic wastewater treatment plants (Econvert-EGSB®, Econvert-UASB®, Econvert-IR®) - Biogas desulphurization products (Econvert-Dsulph® and Econvert-RTF®) - Anaerobic rental installations and pilots Econvert is well known for its technological knowledge in the field of anaerobic wastewater treatment and biogas desulphurization. Econvert makes sure everyone can benefit from the advantages of anaerobic wastewater treatment. Over time Econvert developed into a leading contractor in biological wastewater treatment and biogas conditioning. Biological treatment aimed on lowering the ecological impact and reduces costs. As we think that local reuse is the future. Over time Econvert established a strong track record in anaerobic wastewater treatment and biogas desulphurization. Econvert serves many customers in Pulp & Paper, Food & Beverage and Chemical & Pharmaceutical. Most often we serve the end-user directly, but we also cooperate with partners to optimize the solutions and project implementation. For more information, contact the Econvert team: Email: info@econvert.nl
PFAS removal solutions
Facing a PFAS challenge? Nijhuis provides complete PFAS removal solutions, from concentration to destruction, tailored to your needs. Choose from flexible delivery models from fast action with our mobile to long-term support. To tackle PFAS challenges, we follow a holistic approach.
IntenSieve® — the fine‑screening technology of the future.
The CirTec fine screen is a rotating belt filter designed for separating suspended solids from water. Depending on the application and the solids to be removed, the machines are equipped with a screen cloth with a mesh size ranging from 90 to 1,000 microns. The fine screen models are available in various machine sizes, allowing a wide range of flow capacities to be processed. By combining multiple machines, any required flow rate can be handled. With around sixty operational fine screens in the Netherlands, CirTec is the market leader in fine screening technology in the country. Fine screens can be used for various applications, including reducing the load on downstream treatment processes and effluent polishing. CirTec has references at both municipal wastewater treatment plants and across a wide range of industries, such as food production, recycling, and tanneries.
CellCap
Recovering raw materials and saving energy are the key characteristics of the CellCap® process. Cellulose, the main component of toilet paper, is one of the raw materials that can be recovered from wastewater. CellCap® is the technology for producing clean, marketable cellulose. In addition to producing a valuable raw material, the CellCap® installation offers a significant reduction in energy consumption for aeration in the wastewater treatment plant. Moreover, by recovering cellulose, the amount of sludge produced—and therefore the consumption of chemicals—is minimized, the treatment capacity is increased, and costs are sustainably reduced. CellCap® already received the Aquatech Innovation Award in 2017. According to the jury: “This is a very good example of resource recovery and is a perfect example of the circular economy in action.”
Disc Filter; effluent polishing
Years of experience in the field of tertiary wastewater treatment have led to the development of a Disc Filter with the highest performance, suitable for a wide range of applications for both domestic and industrial installations. The Disc Filter can be used for tertiary filtration in municipal or industrial applications, filtration of process water, and the reuse of (waste)water. The principle of filtration using filter discs is extremely simple. The water to be filtered flows by gravity into the rotating central drum, into the discs that are covered on both sides with micro‑screen cloth. The water flows from the inside to the outside through the panels. The solids are collected on the panels, and the purified water passes through. As soon as the amount of captured material increases to the point that clogging begins to occur on the filter plates, the liquid level in the machine starts to rise. This causes the screen to rotate, exposing a clean section of screen cloth. The captured material is rinsed off the cloth and discharged from the machine through a central trough.
Belt Thickener – thickening sludge streams
With the CirTec GT‑Optima belt thickener, liquid streams with very low concentrations of suspended solids—such as sludges—can be thickened. On an endless belt, sludge conditioned with polyelectrolyte is thickened. Independently mounted ploughs resting on the filter cloth turn and rotate the sludge, allowing water to escape from the sludge layer and preventing water from accumulating in formed grooves. An adjustable weir at the discharge end of the machine ensures a high degree of thickening. After discharge of the thickened material, the belt is cleaned by a spray system. Of the 500 Giotto Water references worldwide, 22 belt thickeners are operational in the Netherlands and Belgium. Features of the belt thickener: -Smooth and uniform gravity thickening -Very low polymer consumption -High dry solids content in the thickened sludge -Very clean filtrate (suitable for belt cleaning) -Consistent thickened sludge quality, independent of inlet concentration
Belt Filter Press – dewatering sludge into a stackable product
The dewatering characteristics of sludge can vary significantly depending on its specific properties. Mineral sludges and highly fibrous sludges behave very differently from biological sludges — not only in terms of dewatering performance, but also in abrasiveness. For that reason, we offer a broad range of dewatering machines tailored to the characteristics of each sludge type. BPF WR Greenland: dewatering of biological sludges SD: dewatering of mineral sludges CMF Optima: dewatering of sludges from municipal wastewater treatment plants and industry across various concentrations BPF‑C: dewatering of heavy sludge types, where high pressure must be applied quickly