PFO+RO Systems

PFO+RO systems are now available for pilot-scale evaluation and small-scale commercial applications. We are now working with a variety of industrial partners who have purchased these systems.

Porifera’s first FO+RO system was pilot tested for the US military for rapidly deployable mobile desalination systems that could handle any feedwater source. Click here for more details about this system.



  • Reduces CAPEX, OPEX, and life-cycle costs for many industrial and municipal applications.
  • Reduces maintenance, cleaning, and downtime. PFO is the ideal pretreatment for RO.
  • Creates high purity water in two treatment steps from any source. Draw can be tailored to achieve specific product water quality targets.
  • Dual-membrane barrier rejection of salts, bacteria, virus, and emerging contaminants.
  • Easy to operate and maintain.
  • Can handle large fluctuations in feed stream quality.
  • Provides consistent water quality and level of treatment.
  • Reduces chemicals and waste. No backwashing, washwater handling or sludge generation.

FO+RO is a complete solution for many industrial and municipal applications including the following:

  • Wastewater reuse
  • Indirect potable reuse
  • Graywater and carwash water recycling
  • Desalination
  • Waste stream recycling for cooling tower and boiler feed water
  • Remote desalination: operating FO+RO in PRO mode allows extremely low energy desalination in remote locations with low OPEX, maintenance, and consumable requirements.

Click here for more information.