ElectroFlex Electro-deionization Systems (EDI)

Graver’s ElectroFlex EDI systems are factory assembled skids that are pre-engineered and designed to meet the purified water demands of the power, microelectronics, and general industry markets. These systems also provide continuous quality as well as 40-50% lower operating costs when compared to mixed bed DI.   All this is accomplished using a combination of selective ion exchange membranes, ion exchange conductive resins, and electricity to remove ions from water rather than costly hazardous chemicals.

Typical Applications

  • Power Generation: Steam makeup water
  • Petrochemical: Steam makeup water
  • All Industrial applications where demineralized or deionized water is needed for ultrapure processes

Advantages Over Mixed Bed Ion Exchange

• Complete internal control over water system – nothing leaves or comes into plant
• No inconsistent performance due to poor regenerations
• Continuous, not batch operation
• No disruptive regenerations
• No bulk storage of regeneration chemicals
• No waste neutralization required for regeneration chemicals
• Smaller system floor space creates more facility space for other uses
• No risk of cross contamination with other customer resins
• Reduction of environmental, health and safety risks

Operating Cost Savings

• Uses only electricity instead of chemicals to regenerate • No need for bulk acid/caustic storage
• No need for regeneration system or neutralization system
• Recycle of EDI reject (quality is better than RO feed)
• Can be recycled upstream to the RO feed for 100% recovery, zero waste production
• Water savings on both the processing and waste ends
• Or reject can be discharged with no further treatment
• Reduction in labor
• 50-75% less floorspace than ion exchange based demineralization

ElectroFlex Electro-deionization Systems (EDI)

Graver’s ElectroFlex EDI systems are factory assembled skids that are pre-engineered and designed to meet the purified water demands of the power, microelectronics, and general industry markets. These systems also provide continuous quality as well as 40-50% lower operating costs when compared to mixed bed DI.   All this is accomplished using a combination of selective ion exchange membranes, ion exchange conductive resins, and electricity to remove ions from water rather than costly hazardous chemicals.

Typical Applications

  • Power Generation: Steam makeup water
  • Petrochemical: Steam makeup water
  • All Industrial applications where demineralized or deionized water is needed for ultrapure processes

Advantages Over Mixed Bed Ion Exchange

  • Complete internal control over water system – nothing leaves or comes into plant
  • No inconsistent performance due to poor regenerations
  • Continuous, not batch operation
  • No disruptive regenerations
  • No bulk storage of regeneration chemicals
  • No waste neutralization required for regeneration chemicals
  • Smaller system floor space creates more facility space for other uses
  • No risk of cross contamination with other customer resins
  • Reduction of environmental, health and safety risks

Operating Cost Savings

  • Uses only electricity instead of chemicals to regenerate • No need for bulk acid/caustic storage
  • No need for regeneration system or neutralization system
  • Recycle of EDI reject (quality is better than RO feed)
  • Can be recycled upstream to the RO feed for 100% recovery, zero waste production
  • Water savings on both the processing and waste ends
  • Or reject can be discharged with no further treatment
  • Reduction in labor
  • 50-75% less floorspace than ion exchange based demineralization