The impact of sodium polyacrylate on subsequent processes
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This post was last edited by sunjl1981 on 2013-1-6 at 20:07. During the purification of saline, traditional processes involve the use of sodium polyacrylate as a sedimentation aid. In our company, there are no issues with the carbon tube filters, but the resin in the resin towers has formed clumps. I’m not sure how harmful sodium polyacrylate is to electrolytic cells; those who know please share their insights. # ， ， &
As a supplementary point, sodium polyacrylate is an organic substance, and an increase in its amount added will lead to an increase in the TOC content in the saline solution. Will this also have an impact on the battery cell?
An excess of sodium polyacrylate causes white flocculent particles to appear in the saline solution; organic pollutants are non-ionic, but this does not have any effect on the electrolyzer
Although organic pollutants are non-ionic, could they attach to the ion exchange membrane and increase its resistance? During our maintenance, we noticed a thin layer of substance on the membrane; it could be washed away with water. We suspect that this substance is organic in nature, but it’s just a guess – there’s no theoretical basis for it.
An excessive amount of sodium polyacrylate may affect the removal of calcium and magnesium by chelating resins; I wonder if anyone has encountered this issue
Sure, of course – with all the resin stuck together, it should still not be affected.
Has the resin stuck together? :If L were really in excess, there wouldn’t be such results, right? Is there a problem with the sintered tube filter, causing cellulose to get into the resin tower?
It’s not a filter issue; indeed, the resin has stuck together, and it’s sticky, giving the same feel as when sodium polyacrylate is used at a low dilution ratio. No cellulose was found in the resin, and the reason has not been identified to this day. Those who have had similar experiences, please come and share.
It will clog the filter, and an excessive amount will cause the chelating resin to clump, affecting its ion exchange capacity.
If sodium polyacrylate enters the electrolytic cell, it tends to form lumps at the saltwater inlet, blocking the pipes and resulting in a shortage of saltwater supply, which in turn causes the cell voltage to rise and leads to shutdown.
Sodium polyacrylate, when used as a flocculant, tends to form larger molecules that help precipitate impurities; however, it also increases the viscosity of the material, clogs filters, and is detrimental to ion exchange membranes!