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Introducing SDI+ with double power of softening and purification


Patented technology of Logicwater, capacitive deionization works when electricity is applied to the electrode, ions of opposite charge pass through the ion exchange electrode and move to the surface of the electrode and are electrically adsorbed

Greengate Enterprises is the sole distributer of Kerala.

This SDI Technology 21st century water filter system  will deliver  4 benefits to the end user:

#   Perfect replacement for your R O filtering system

#   A whopping  80 % water recovery against R O s  meagre  30 % ( water wastage reduced to 30%)

#   Removes  all organic contaminants forthwith.

#   cost of filtering one litre water is decreased to  60% when compared to R O systems.


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.

Capacitive 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 ₹8 per 1000 liters. RO costs ₹15 to ₹25 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.

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  1. Water purification
  2. Water softening
  3. Waste water Recovery
  4. Water Desalination.


  • 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

  • Electrode is not exposed to ensure electrical safety

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

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