Back-washable Spiral Ultrafiltration Technology for Domestic & Industrial Water Purification
Back-washable Spiral Ultrafiltration Technology Ultrafiltration (UF) refers to the separation of species through membranes on size exclusion principle. It differs from micro filtration with reference to the size of the species being separated. Ultrafiltration membranes are thin polymeric film having pores of the sizes 2 nm to 100nm, operate at relatively low pressure (< 5 bar) and separate the micro species based on size exclusion principle. 

BARC has developed and deployed various types of membranes and membrane devices for wide range of water related applications and already transferred the know-how of online domestic water purifier based on ultrafiltration polysulfone membrane to a number of private companies who have successfully commercialised the product in market under different brand names. These domestic water purifiers are of low capacity, zero operating cost gadgets meant to satisfy the need for safe water for small families. Based on UF membrane, BARC presents know-how of another product namely, back washable spiral utrafiltration membrane device. 

Salient features

  • Crystal clear water free from turbidity, bio-contaminants, colloidal species, etc.
  • Compact and delivers stable output quality.
  • Ensures continuous operation with less footprint area.
  • Very low operating pressure of about 2-3 Bar, back washable pressure up to 2 Bar.
  • Cross flow mode of operation preferred for higher turbidity feed of >10 NTU.
  • Eco-friendly as no chemicals are used (other than for need based cleaning).
  • Adaptable for high turbidity industrial water (with changes in operating parameters).

Applications

Depending on the types of applications and capacities, these membranes are used in specific module configurations. 

These devices with capacity range from about 0.5 LPM to 4 LPM per unit can be deployed for 

  • Community water purification  
  • Small-scale industries

For details contact :
    

    Head, Technology Transfer & Collaboration Division,
    BHABHA ATOMIC RESEARCH CENTRE,
    TROMBAY, MUMBAI - 400 085
    Fax : 091-022-25505151
    Email : technology@barc.gov.in

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