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Process Water Filtration

Updated: Oct 20, 2020

Process water,or utility water, is a common name for water which is not drinkable and typically used in connection with technical plants and processes in production.

Process water can be used in a wide variety of ways. From chemicals to petrochemical plants, process water is a widely used commodity. However, depending on the source of the incoming water-municipal water plant, well water or surface water - a number of filtration steps may be required to produce water that is acceptable for use in the application. 

For example, incoming water may contain particulate and bacteria that can foul RO membranes, damage pump seals, clog nozzles, contaminate catalysts, etc., leading to costly repairs or downtime.

Proper water treatment is often a complex multi-stage process. Some process water need to undergo a more extensive treatment, e.g. softening and demineralization. Depending on the contaminant load in the incoming stream it may be prudent to first treat with a coarse sand or multimedia followed by an activated carbon bed to remove dissolved organics. Treatment may also involve the use of deionizing resins (to remove dissolved inorganic salts), reverse osmosis membranes (to reduce salts and dissolved organic material), special adsorbents to remove heavy metals, arsenic and lead, and ultraviolet light (to kill bacteria and other microbial contaminants). 

We offer a variety of Graver filters that can be used as part of a comprehensive water treatment process:

  • Pre-RO filters to protect the RO membranes from fouling

  • Tank vent filters prevent ingress of airborne mold and bacteria

  • Trap filters downstream of sand, resin, and carbon beds

  • Prefilters to prevent particulate loading of carbon and ion exchange resin beds

  • Membrane filtration to produce high purity water quality

  • Absorbents to remove arsenic III which is not removed by the RO membrane

Product Selection:

  • CMBF™ or STC™: Melt blown depth filters for Pre RO filtration to prevent membrane fouling.  5 micron is most typically used.

  • CMBF™ or STC™: Melt blown depth filters to trap any released sand, carbon or DI resins.  5 or 10 micron filters are recommended.

  • CMBF™ or STC™: Melt blown depth filters are ideal for removing particulate upstream of carbon and resin beds to assure their maximum effectiveness

  • ZTEC™ B: Final filtration when sub-micron purity levels are required

  • TefTEC™: Hydrophobic PTFE membrane for tank vent applications

Contact us for inquiries.



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