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ZVI Blue™


mediaLiberty Hydro owns and manufactures a patented technology, ZVI Blue™, to remove arsenic, selenium, chromium and mercury and other dissolved metals from wastewaters, some shown below:


  • To remove dissolved metals from water
  • Call for delivery schedules and prices
  • Granular media is pourable into various reactor vessels
  • Can replace activated alumina and other media struggling with compliance

Technical Information

For a number of years, elemental iron or zero valent iron (ZVI) has been used to treat ground water and surface water to remove a number of pollutants (e.g., mercury, arsenic, selenium, chromium (VI), chlorinated hydrocarbons, etc.). The methods for bringing the ZVI in contact with the contaminant have varied from direct addition of the iron to the water to the construction of underground permeable reactive barriers containing iron particles.

More recently, Liberty Hydro, Inc. has developed a unique ZVI delivery system for the removal of heavy metals and selenium from water. The ZVI Blue™ system is a patented process in which finely-divided ZVI is attached to an open-pore polymer foam. The foam media allows easy flow of the water while enabling adequate contact and reaction time with the ZVI.

In all ZVI applications, iron acts as a strong reducing agent and, when it is in the finely-divided form, is particularly effective at reacting with low levels of contaminants. In the case of selenium, the ZVI Blue™ system will effectively reduce all water-soluble forms of selenium and immobilize it as elemental selenium on the surface of the iron. The used ZVI Blue™ media can then be safely sent to the landfill.

Liberty Hydro has also developed customized blends of its reactive media and can install its proprietary technology within a properly-designed treatment train to assure compliance with applicable effluent discharge standards.

Bench-Scale Units

Clients can purchase bench-scale units to test water at their sites. benchscales

  • Specify the size desired
  • Obtain confirmation of removal effectiveness
  • Help assess the size of a pilot unit and full-scale treatment unit

Pilot Units

Clients can purchase Pilot Units for field trialspilotunits

  • Units available to treat a flow rate from 1 gpm to 20 gpm or higher
  • Preliminary step toward sizing a full-scale treatment system


Water Studies and Testing Services

Clients can ship water for testing and treatment studies.waterstudies

We determine the characteristics of the water, the reaction time for removal, and the most effective treatment protocol.