What are the standards for calcium and magnesium hardness in softened water? Are there any relevant standards? How to determine it quickly?
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The facility has large centrifugal pumps that use softened water as cooling water. What are the standards for calcium and magnesium hardness in softened water? Are there any relevant **standards or corporate standards? Apart from the traditional titration method, are there any quick testing methods, such as using instruments or test strips?
There are no specific requirements for using softened water as cooling water, right? Generally, titration is used; I’ve also heard of calcium and magnesium hardness testers! You can look for it online :)
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If it’s only used for cooling water, there seems to be no requirement regarding hardness standards. As for rapid testing, there are related handheld devices that can do it quickly; I’ve seen ones at one of my clients’ sites, but they seemed to be from abroad. I’m not sure about the specific brand; you can ask Baidu.
The hardness should be no less than 50; otherwise, the tendency for corrosion increases. In the case of deionized water, there are requirements regarding dissolved oxygen and conductivity