Target & remove specific ions

Targeting specific ions for removal can be the most cost-efficient way to treat a wastewater flow. Saltworks has treatment and sensing solutions available to treat ions and other species, making water suitable for discharge or re-use and avoiding more costly interventions such as zero liquid discharge (ZLD).

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Selective Removal of Ions

Is your wastewater challenge limited to one or two constituents of concern? It may be possible to target and remove specific contaminants, avoiding the need for more complex and expensive treatment. 


Many wastewaters are more than 99% fit for discharge or re-use, but one or two contaminants prevent this. Saltworks’ IonSelect solutions target specific ions or contaminants of concern, removing them as a solid so you can discharge 99% of your wastewater volume and avoid brine management costs.


We pull from a variety of treatment methods, robust real-time sensors, and the expertise to know when and how to use them. 

Selective ion removal for brine management
Filter Press Producing Solids selective removal
Solids removed by selective precipitation and filter press.

IonSelect Examples

Method Examples
Selective precipitation and filtration
  • Remove heavy metals such as arsenic, cobalt, mercury, iron, manganese, aluminum, and others.
  • Reduce barium, sulfate, or calcium concentration in waters.
  • Produce solid filter cake, without a brine by-product.
  • Direct chemical or electrochemical destruction
  • Treat for cyanide and ammonia. Produce safe by-products such as nitrogen gas.
  • Monovalent electrodialysis removal
  • Remove monovalent ions such as chloride, to enable the water to be recycled and re-used.
  • Nanofiltration
  • Reject and concentrate sulfates, multivalent ions, and organics while passing monovalent ions such as sodium and chloride.
  • Challenge Us

    Don’t see your problem listed? Saltworks develops custom treatment solutions, designed for cost-effectiveness. Contact us and our process and chemistry experts will rapidly review your problem.

    targeted precipitation filter press solids
    Filter press cake: precipitated solids targeted for removal.

    IonSelect Applications

    IonSelect Solutions Related Resources

    IonSelect Related Products

    BrineRefine Chemical Softening System

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

    FlexEDR Electrodialysis Reversal

    FlexEDR is an advanced electrodialysis reversal (EDR) system, leveraging our next generation ion exchange membranes. It requires less pre-treatment, tolerates oils and organics, selectively removes ions and uses fewer chemicals. More …


    An automated, real-time sensor for saline water 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. More ...

    XtremeUF Ceramic Ultrafiltration System

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

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