Quality issues with secondary brine
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This post was last edited by sunjl1981 on 2013-1-6 at 20:28. Over the past period, it has been observed that the levels of Ca and Mg in the secondary brine often exceed the allowed limits. There is also a strange phenomenon: the Ca level is 20 PPb in one tower, while it is 25 PPb in the second tower. This situation occurs frequently in all three towers. What could be the reason for this? # + + . hcbbs
There are many reasons; once it was a problem with saltwater, and there were also issues with chelating resins. If you need to discuss this, please call: 13572567263. A detailed discussion will definitely help you solve the problems
What are the specific ICP values for calcium and magnesium? First is to rule out contamination during sampling (usually an excess of calcium) ； Next is to check the quality of the brackish water after one testing How about adjusting the pH by adding acid? Finally, it’s necessary to check the issues related to the resin tower itself; each aspect needs to be verified, such as the resin level, the resin level before and after regeneration, the pH values when acid is added or removed, the opening degrees of the valves and instruments controlled by the PLC, as well as the air pressure used for backwashing, and so on. In short, checking the resin tower itself is very important! ! !
I’m not sure what kind of pipelines you’re using; it could also be due to the material of the pipelines.
Those who are aware of this situation, please feel free to share your insights; we have encountered the same problem as well, only it involves aluminum and silicon, with levels fluctuating up and down. We use pipes and storage tanks lined with low-calcium magnesium material, and some are lined with PO material.
It’s the Asahi Kasei process, right? There’s an issue with the resin tower regeneration process.
Try it at double the dose. Pay attention to observing the calcium and magnesium content in the replacement saline
It’s obvious; this isn’t the first time this has happened； There is a problem with the resin column regeneration.
Don’t be so firm; check whether the indicators for the replacement saline are satisfactory. Give it a try! !
Personally, I think it’s a problem with the pH control of the saline; I’m not sure if there is an acid addition process. Slightly lower the pH value.
One is the issue of brine quality (including the ICP parameters of the brine before it enters the tower, as well as its temperature, pH, and flow rate); the other is resin quality (including the resin’s activity, height, degree of caking, and the condition of resin regeneration)