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Pure Water EDI System

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High Purity Water Systems - Electrodeionization System

Application: include power generation, metal finishing, electronics fabrication, and more.

Product Specifications:

  • EDI System
  • water resistivity:15—18MΩ .cm
  • PH:6.5—7.5
  • Silica (SiO2): 3-20ppb


High Purity Water Systems - Electrodeionization System


  • Reverse osmosis and electrodeionization technology
  • no regeneration chemicals required.
  • Worldwide Support.
  • Cost-Effective.
  • Packaged Systems.
  • 10 Years of Experience.

When fed with low total dissolved solids (TDS) feed (e.g., feed purified by RO), the EDI System output can reach very high purity levels (e.g., [[Purified water/ Electrical Conductivity|18 megohms/cm], Resistivity / Conductivity Measurement of Purified Water. The ion exchange resins act to retain the ions, allowing these to be transported across the ion exchange membranes.

The main applications of EDI technology, are widely in electronics, pharmaceuticals and power generation.

Input water quality standards

In order to make sure the best treatment of the EDI System, It’s better the input water quality meets the below table :

Raw Water Output of RO System, the Conductivity ≤ 10 μ/ cm
PH value 6.5—7.5
Temperature 5℃–38℃
Working Pressure 0.15—0.4MPa
Hardness ≤1ppm(Take CaCO3 as sample test)
organic matter TOC <0.5ppm,it’s better none
Oxidant active chlorine(Cl2)< 0.05ppm;
ozone(O3)< 0.02ppm
Heavy metals ions < 0.01ppm (including Fe, Mn)
Silicon < 0.5ppm(by SiO2 )
CO2 CO2< 3ppm, if the CO2 > 3ppm , you can use
NaOH adjust the PH value
Particle ≤1μ m

Running parameter

  • Frequency: 50 Hz
  • Input Voltage: 220V AC
  • Output Voltage: 0 – 200 VDC
  • Output current: 0- 6.5A
  • power consumption:≤ 8 W
  • Working temperature: 0-45℃

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