XtremeRO/NF—Brine Concentrator & Water Maker

Advanced Reverse Osmosis and Nanofiltration Systems

Our next generation reverse osmosis (RO) and nanofiltration (NF) systems achieve extreme freshwater recoveries, minimizing brine waste and costs. Use them to make water, concentrate brine, selectively separate ionic solutions, and reduce the size and cost of downstream brine management systems. 











Reverse Osmosis & Nanofiltration 2.0

Reverse Osmosis (RO) is the world’s dominant desalination technology. It uses pressurized, semi-permeable membranes to separate freshwater from salty water. RO should be considered in all projects where total dissolved solids (TDS) are less than 80,000 mg/L. 


Nanofiltration is RO’s cousin, which uses a slightly more porous membrane. NF has some speciality applications such as concentrating sulfate-rich solutions, while allowing some sodium chloride to pass into the filtered permeable water. 


Recent technological improvements are enabling the application of RO and NF to achieving higher concentrations, and functioning with ever more challenging waters, e.g. those laden with scalants, and waters high in organics. We have solutions that enable RO and NF on these complex waters. 


Thanks to the advent of ultra-high pressure RO (UHP RO), brine concentrations of up to 130,000 mg/L total dissolved solids (TDS) can now be reached. When partnered with scale-removing technology, waste brine volumes from UHP RO are reduced by almost 50% over prior RO technology


Saltworks pilot plants can demonstrate our performance at your site or ours.

RO System


Our XtremeRO/NF brine concentrator products are suitable for a wide range of wastewaters and designed to run at high recoveries—resulting in less brine waste.


Our plants are fully packaged systems, with intelligent automation that maintains membrane health, maximizes up-time, and minimizes operating costs. We can design and package them with the best RO or NF membranes for your project.


Our XtremeRO/NF products come in three pressure classes:  

  • XtremeRO/NF 600 operates at 600 psi (41 bar), enabling initial water recovery and producing brines of ~40,000 mg/L TDS.
  • XtremeRO/NF 1200 operates at 1,200 psi (80 bar), capable of concentrating to 80,000 mg/L TDS.
  • XtremeRO 1800 (UHP RO) operates at 1,800 psi (120 bar), pushing brine concentrations up to 130,000 mg/L TDS.

Comprehensive RO/NF Systems

To get the best performance, cost-effectiveness, and longevity out of an RO/NF process, scaling and fouling risks may need to be carefully managed. We can deliver our RO/NF systems as a total system solution, fully skidded, integrated, automated, scalable, and ready-to-operate, complete with:

  • Scaling ion removal using BrineRefine, our automated chemical softening system
  • Organics and particulate removal using our tough XtremeUF ceramic ultrafiltration technology
  • Dynamic recovery control using our novel sensors to measure recovery limits and adjust in real time as water conditions change.
  • Remote operation capability for hands-off operation as well as remote support from our service team. Interested in on-site operations support? We can offer that too.

Our plants are factory-tested and delivered with comprehensive on-site commissioning, training, and support.

RO & NF Related Products




An automated, real-time sensor for saline waters that measures calcium (Ca2+), barium (Ba2+), sulfate (SO42-) ions and silica (SiO2). ScaleSense is robust and corrosion-resistant and functions accurately and precisely, even at extremely high-TDS.


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BrineRefine Chemical Softening System

Chemical Softening System called Brine Refine

Smart, compact, modular chemical softening system that reduces costs with precision dosing and built-in solids management. Improves recovery and minimizes fouling risk with intelligent controls that communicate with downstream assets, like RO or evaporators.

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XtremeUF Ceramic Ultrafiltration System

An ultra-robust ceramic based ultrafilter that can remove suspended solids, oils, and grease from the most challenging slurries and impacted wastewaters. XtremeUF cleans itself as it operates, to ensure your membranes maintain performance.


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The first evaporator-crystallizer with no atmospheric contact, important for water with volatile organics. Choose between no liquid water return or clean water that is safe for discharge.





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RO & NF Related Resources

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