Robust, Ceramic Ultrafiltration

Ultrafiltration (UF) filters particles with a size range of about 0.01 to 1 µm. This includes oils, grease, precipitated by-products, bacteria, viruses, and suspended solids. UF is widely used in wastewater treatment, often employing polymeric membranes. However, ceramic membrane UF systems have some advantages and have recently made great advances. When traditional polymeric UF does not meet your needs, consider Saltworks’ XtremeUF. 

Robust Ultrafiltration



remove oils and grease from water



remove suspended solids from water



protect downstream membrane treatment ultrafiltration


Polymeric & Ceramic UF

Most UF systems employ polymeric membranes, especially those in municipal water treatment. However, polymeric UF membranes struggle in harsh environments and with higher particulate loads.

Ceramic UF membranes are now commodity standardized items. Their cost has been driven down, opening UF’s application range. They are extremely robust membranes—”as hard as a rock”. In comparison to polymeric membranes, not only do ceramics treat more impaired wastewaters, they take a beating and performance can be recovered, if operated correctly.

ceramic ultrafiltration of petrochemical oil and gas wastewaters
XtremeUF Ceramic Ultrafiltration System

Introducing XtremeUF 

Saltworks has developed a ceramic membrane system for repeated industrial implementation. We use off-the-shelf commodity ceramic membranes widely available from multiple vendors. We package them into a well-engineered and intelligently automated skid that keeps the membranes clean as it operates.


Our novel UF systems offer lower energy and higher performance, with both cross flow and dead-end options.

Clarifier Replacement

Clarifiers are a wonderful technology, treating most of the world’s wastewater. However, new water challenges can require new thinking. When warranted, XtremeUF can replace a clarifier in a flow sheet, offering:

  • Higher quality output water with less ‘slip’ of smaller particles, ensuring you meet your discharge standards
  • Zero coagulant addition, reducing chemical consumption and fouling potential of any downstream membrane assets
  • Increased capacity per unit footprint, albeit at higher energy consumption

Depending on the application—and with consideration of the above three points—Saltworks uses clarifiers or XtremeUF.

xtremeUF ceramic ultrafiltration skid
enhanced oil recovery pilot oil and gas
Pilot plant with XtremeUF, treating oil & gas produced water

XtremeUF Solutions

XtremeUF filters almost any wastewater, opening up UF applications to highly impaired waters where polymeric UF cannot cope. XtremeUF ensures that your membranes maintain performance, even when treating the toughest wastewaters.


With different capacity and filter specifications available, XtremeUF is suited for many applications. It is available with filtration specifications of 0.01, 0.05, 0.1, 0.5, and 1.2 µm.


We have pilot plants ready to prove performance at your site or ours. Contact us to learn more about what XtremeUF can do for your project.

Ultrafiltration Applications

  • Agriculture
  • Automotive
  • Brine Management
  • Chemical Extraction
  • Chemical Softening
  • Cooling Tower Blowdown
  • Factory Wastewater
  • Flue Gas Desulfurization
  • Food & Beverage
  • Landfills
  • Lithium Extraction & Refining
  • Microelectronics
  • Mining & Metals
  • Municipal & Wastewater Reuse
  • Oil & Gas Produced Water
  • Particulate & Suspended Solids
  • Petrochemical & Refining
  • Pharmaceutical
  • Power Generation
  • Pulp & Paper
  • Remediation
  • Slurry Thickening

Ultrafiltration Related Products

XtremeRO/NF Brine 


Xtreme Reverse Osmosis device Saltworks Technologies

Next-generation water-maker and brine-concentrator based on reverse osmosis that achieves extreme freshwater recoveries, enabling cost-effective brine management and treatment of challenging organic-laden waters including oil & gas produced waters.


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BrineRefine Chemical Softening System

BrineRefine Chemical Softening System

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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airbreather evaporator crystallizer

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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ScaleSense Real-Time Scaling Ion Sensor

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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Ultrafiltration Related Resources

Trash being dumped into a landfill

Ultra High Pressure Reverse Osmosis for Landfill Leachate

Reverse osmosis (RO) is the best available technology to treat landfill leachate for surface discharge. Possible trace volatile organic compounds (VOCs) and ammonia emerging in the RO permeate can be removed with a polishing step to meet the highest discharge standards.

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