| Title of Process/ Know-how/ Product/Design/Equipment

Electro-deionization unit for producing ultrapure water

IPR Status & Details:

WO 2014/080427A1; US 2015/0298116A1

Application/Uses/Problem being addressed

Ultrapure water (resistivity: 18.2 MΩ cm; pH: 7.0) and 10-50 litre per hour using indigenously developed ion-exchange membranes for electronics, pharmaceuticals and other niche applications

Salient Technical Features including Competing Features/ Impact

  • All components such as ion-exchange membranes, resins, electrodes are indigenously available.
  • Continuous regeneration of mixed bed resin
  • Steady quality control for the product water (resistivity: 18.2 MΩ at 25 oC; TOC: 1 ppb; pH: 7.00 flow rate: 15 LPH).
  • Ground water or municipal water may be taken as feed water
  • High percentage of water recovery
  • Maintenance cost: Negligible
  • TRL Level & Scale of Development:- TRL 8 TRL Reference

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    Business scope & opportunity (in terms of scale, cost, market etc.)

    Use of ultrapure water is on continuous increase. Emphasis on indigenous production of such units, which are currently served from international players, provides opportunity for Atma Nirbhar Bharat.

    Environmental Considerations

    Eco-friendly

    Status of Licensing:

    Licensed technology

    Status of Commercialization:

    Not yet commercialized

    Major Raw Materials Needed

    Ground/surface water

    Major Plant Equipment and Machinery Required

    Membrane casting facilities, and a workshop

    Techno-Economics

    Depends on the scale of manufacturing; Will be available on request

    Technology Package

    • Design for electro-deionization unit for producing ultrapure water (resistivity: 18.2 MΩ cm.)

    • Process for ion-exchange membrane

    • Demonstration of the process

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