Quality of secondary brine
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Currently, there is a situation where, after the resin tower has been in operation for about 10 hours, sampling and analysis show that the secondary brine does not meet specifications; however, prior to the switchover, sampling and analysis indicated that the secondary brine was compliant. A sample of the brine was taken for analysis, and the calcium and magnesium levels were around 1000 PPb; these levels remained unchanged under all operating conditions. Please analyze what could be the cause of this.
It’s difficult to analyze every time such a post is made. I assume you’re referring to normal sampling, in which case it’s the brine sample coming out of the resin tower and into the electrolyzer. So, take samples from each tower; this will make it easy to determine which tower is the problem. If there is no problem with the brine in one batch, it is very likely that the lining of the resin tower has fallen off or cracked.
First, rule out sampling errors or analysis errors. Determine whether sampling was done from the front tower or the back tower; if the back tower does not meet the standards, analyze the front tower first for comparison. If it is indeed the back tower that shows higher values, then it is possible that there is a problem with the lining of the resin tower, as mentioned earlier