Traditionally high purity water is produced by a combination of membrane separation and ion exchange processes. Electrodeionization (EDI) is an electrically-driven water treatment technology that utilize ion exchange membranes and resin to remove ionized species from water by electrical driving force,

An EDI stack has the basic structure of a deionization chamber.  There is an ion exchange resin between two selective membranes. The membranes are ion selective and pass only specific charged ions.   As water flow into the EDI module applied electricity makes ions to move through the resins and across the membranes.  Therefore, water is deionized as the ions can pass through the membrane. These ions are collected into concentrate channel and remove from the system.

In comparison to more traditional ion-exchange process, EDI can provide a better energy consumption and operating expenses for high purity water treatment system in a constant flow. EDI has a continues and simple operation and there is no need of acid and caustic chemicals for regeneration. EDI requires little space and very few automatic valves or complex control sequences that need supervision by an operator


EDI can be used in any application that requires pure water for such as application as following

  • Pharmaceutical industry
  • Boiler feed water
  • Demineralized water
  • Biotechnology
  • Electronics
  • Laboratories
  • Pharmaceutical industry
  • Reduction of ionizable SiO2 and TOC

Ceramic Membranes

Unlike conventional membrane which are from polymer, ceramic membranes are made of inorganics such as alumina, zirconia oxides, silicon carbide and etc.  Ceramic membrane normally has an asymmetrical structure with porous support active membrane layer. Ceramics membrane can categorize based on different modules into flat membranes, roll membranes, hollow fiber membranes, and tubular membranes.

The membrane modules can withstand harsh operating condition such as  high temperatures, extremes of pH (0 to 14), and elevated operating pressures up to 10 bar. This makes these membranes fit for many applications where polymeric and other inorganic membranes cannot be utilized. Furthermore, ceramic membranes are ideal for in-place chemical cleaning at high temperatures, while using caustic, chlorine, hydrogen peroxide, ozone and strong inorganic acids, and/or by using steam sterilization.

* High resistance on acid and alkali condition.
* Long operating life which is 2-3 times longer than polymeric membrane
* Extensive application range of water temperature.
* Environmentally friendly, can be recycled as a raw material for ceramic products.
* Good hydrophilic, low operating pressure, saving energy.
* High flux


Ceramic membranes are widely being used in a broad range of industries such as biotechnology and pharmaceutical, dairy, food and beverage, as well as chemical and petrochemical, microelectronics, metal finishing, and power generation.

Water Purification

Waste Water Treatment

Chemical Industry

Food and Beverage

Application in municipal water treatment

Application in domestic sewage treatment

Application in oily wastewater treatment

Application in textile wastewater treatment

Application in printing and dyeing wastewater treatment

Application in chemical wastewater  treatment