Our patented technology of SDI™ based on capacitive deionization works when electricity is applied to the electrode, ions of opposite charge pass through the ion exchange membrane and move to the surface of the electrode and are electrically adsorbed



When the water source is groundwater, river water, or municipal water, SDI™ is the most cost-effective and energy-efficient method of purifying water. SDI™ removes the dissolved charged species such as total dissolved solids (TDS), inorganic contaminants, and radionuclides.

Smart Deionization (SDI) vs. Reverse Osmosis (RO)

  • SDI has an 80% water recovery when purifying to drinking water quality. RO has a 30% water recovery.

  • SDI costs approximately $0.06 per 1000 liters. RO costs $0.08 to $0.16 per 1000 liters.

  • SDI does not require water softening prior to purification. RO does require water softening prior to purification.

  • SDI is a low maintenance system. RO is a high-pressure system across membranes requiring routine maintenance.

  • SDI is capable of leaving some minerals in the water. RO removes everything, including good minerals.




  • Up to four cells can be configured in series, applicable to a wide range of TDS

  • Operation under stable DC voltage by using bipolar electrode (300VDC or less)

  • High recovery rate, up to 80%

  • Salt removal rate up to 80%

  • Operating temperature, max. 60℃

  • Low energy consumption due to low voltage operation

  • The electrode is not exposed to ensure electrical safety

  • Compared with other processes, the pretreatment conditions are simple and the pretreatment process cost is economical.