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Reuse options for the salt recovered from textile

Posted by ganesan viswanathan on March 11, 2013 at 1:03am

Large qty of common salt being used in textile dyeing operations.While going for ZLD,The Salt are recovered through R.O.tHE Recovered salts are contatminated with other chemicals.Can any one suggest to free the salt from contamination so as to reuse.(1500-2000tons/day is generated ) 

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Comments

  • ganesan viswanathan March 13, 2013 at 9:48am

    Dear Jaideep,

    Thank u for ur suggestion

    Ganesan.V

  • ganesan viswanathan March 13, 2013 at 9:46am

    Dr Pillai,

    Thank u for ur suggestion

    Ganesan.V

  • Dr Jaideep Dudhbhate March 13, 2013 at 6:43am

    Ganesan,

    The RO reject needs to be made hardness free and decolorized for salt to be recycled. Ozonation could be a good option at this stage. It is expensive byt when you are recycling salt back, it might be a good option for decolorization as well as organic impurity removals. Load on evaporator will reduce.

  • Prof Dr V N Sivasankara Pillai March 12, 2013 at 11:27am

    The constituents in the waste lye are buffering agents (alkaline) and organics derived from wasted dye. the organic part can be destructively oxidized with ozone/hydrogen peroxide/UV, and reused in the dying industry itself. The process can be done at ambient temperature, and leaves no treatment residue. If some body is interested to work out as an industrial/academic project, I can help. sivasankarapillai@gmail.com or 09847151631

  • V.K. Raman March 12, 2013 at 11:11am

    For Textile Effluent Colour Remover, Plz. Ct. +91 99 529 88 540.

  • ganesan viswanathan March 11, 2013 at 5:52am

    Dear Raman,

    The qty is tons /day from textile waste in tamilnadu especialy from tirupur and erode.That is it is a alrming issue

  • ganesan viswanathan March 11, 2013 at 5:49am

    Dear Vinodh,

    Thank u for ur enc report.This would be usefull.Is the Technology is applied in tanning industry any where?

  • Vinodh Valluri March 11, 2013 at 4:44am

    Here is a report that may be helpful. 

    http://www.academia.edu/1856290/A_First_Report_on_the_Selective_Pre...

  • V.K. Raman March 11, 2013 at 3:18am

    Is it 1500-2000 Tons/day or Kgs/day?  Has the contamination toxic effect?  

    If the salt is non-toxic, can it be reused for pH correction in acidic soil? 

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