Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
-
Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Search results for query: *
- Users: deposition
- Order by date
-
pH shift in softening water
I believe it may have nothing to do with ion exchange chemistry. The softener may be experiencing organic fouling, releasing acids either from bacteria or organic chemicals. You can verify the guess by sampling a column of resin for microscopic examination and a caustic rinse wash.- deposition
- Post #5
- Forum: Water treatment and distribution
-
low pH problem in spray humidifier systems
Another factor I forgot to bring up is bacteria. I don't know the operating temperature. If the temperature is below 120 F, you may have anaerobic bacteria problem. In other words, acid producing bacteria may be present in your system.- deposition
- Post #3
- Forum: Water treatment and distribution
-
heat exch loop Ph and galvanic prevention?
pH 5.5 is corrosive to copper. Ideal pH for copper is between 7.5 and 9.3. If you should use antifreeze, don't use automotive grade antifreeze because it contains silicate. Silicate is unstable in low pH. It forms gels and fouls your heat exchanger. If you use water, you can buy corrosion...- deposition
- Post #3
- Forum: Corrosion engineering
-
low pH problem in spray humidifier systems
A comprehensive water analysis should be done, at least on one of the low pH (~4) samples to diagnose the problem. My guess is something to do with the pretreatment of the RO. If you can break down the cations and the anions in the water analysis, it will shed more light to the problem.- deposition
- Post #2
- Forum: Water treatment and distribution
