SaltMaker Evaporators & Crystallizers

Modernized evaporators and crystallizers for reliable minimal and zero liquid discharge

Our SaltMaker family of robust modular evaporators and crystallizers turns almost any saline wastewater into clean water, minimal liquid discharge (MLD) brines or zero liquid discharge (ZLD) solids.

Evaporation & Crystallization Reinvented

Evaporators and crystallizers serve two important roles:

  1. Concentrating and crystallizing valuable input materials used in the production of everyday products,
  2. Achieving minimal liquid discharge (MLD) or zero liquid discharge (ZLD) from wastewaters. 

Our SaltMaker evaporator crystallizers process challenging industrial brines without complex pre-treatment thanks to their self-cleaning and forced circulation designs. They are engineered to withstand corrosion, minimize site installation costs, and maximize uptime through robust design and intelligent automation.

Whether you need concentration and minimal liquid discharge (MLD) with an evaporator, or salt crystallization and zero liquid discharge (ZLD) with a crystallizer, there is a SaltMaker suited to your project’s treatment goals.

Photo of a modular SaltMaker plant built into standard ISO frames
Photo of zero liquid discharge solids produced by a SaltMaker

SaltMaker® Services

Our SaltMaker® family of services provides scalable, flexible solutions that cover all evaporation and crystallization needs, including recovery of valuable metals, and MLD and ZLD.


We offer solutions across five categories, each of which has different advantages for different projects. These technologies are then tailored to specific end-user needs and energy sources.


We help you to achieve the optimal solution for your project by providing early consulting and engineering advice up to full process design integration with project assets. We also provide a range of bench and pilot testing services and ongoing project support. 

SaltMaker Product SaltMaker MultiEffect SaltMaker AirBreather SaltMaker MVR SaltMaker MSF SaltMaker ChilledCrys
Evaporation Process Multiple effect humidification dehumidification (HDH) Single effect humidification (open), with optional dehumidification (HDH) Mechanical vapor recompression (MVR) Multistage flash (MSF) Salts formed by eutectic crystallization. Not an evaporator.
Primary Energy Source Thermal energy ~90°C Thermal energy ~60–90°C Electrical power Thermal energy > 85°C Electrical power
Carrier Gas Humid air Humid air Sub-atmosphere steam (30 kPa) Sub-atmosphere steam (30 kPa) No carrier gas. Cooling a warm brine crystallizes salts.
Solid Salt (ZLD) or Brine Concentrator (MLD) MLD MLD ZLD or MLD ZLD or MLD ZLD or MLD
Atmospheric Air Contact None Optional None None None
VOC Management Post-treatment of distilled water Built-in Post-treatment of distilled water Post-treatment of distilled water Not generally applicable
Use Case Thermal energy >$5/GJ Thermal energy <$5/GJ Electrical power available, lower cost than steam equivalent Low cost steam available Feed fluid has rapid solubility-temperature changes
  • Multiple effect heat recycle reduces heat quantity consumption.
  • For high quantity thermal sources (co-benefit of plant cooling)
  • Optional open version evaporates water to atmosphere (no liquid water byproduct)
  • Safe volatiles management (no atmospheric contact)
  • High capacity in a small footprint.
  • High capacity in a small footprint.
  • Membrane hybrid crystallizer, which avoids boiling water
  • Highly energy efficient on specific water chemistry
  • * Challenging water chemistry typically means high in organics and/or scaling ions. Saltworks’ other technologies such as XtremeUF and BrineRefine address challenging chemistry upstream of evaporators & crystallizers.

    Robust, Modular & Efficient 

    The SaltMaker evaporator-crystallizer family is engineered to meet diverse needs while integrating safety-by-design. Each system is built to maximize uptime through sound engineering to reduce scale, remove corrosion risk, and self-clean during operation.


    Scalability and ease of installation and operation is at the heart of every SaltMaker. All four SaltMaker products are constructed using modular ISO shipping container building blocks and are available in different sizes, with configurable options for your application.

    Photo of a modular SaltMaker evaporator being assembled
    A photo of a SaltMaker AirBreather evaporator effect

    Comprehensive Solutions

    Every brine presents unique challenges, and our engineers are ready to review yours. The best solution may involve a cost-optimized blend of technologies. As a manufacturer of membrane, thermal, and chilled concentrators Saltworks is uniquely positioned to optimize treatment economics for the lowest total cost of ownership.


    Contact us for an assessment. Find out what SaltMaker will work best for you and explore upstream membrane concentration options for superior economics.

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