Strange phenomenon – the preprocessor overflow tube turned completely red overnight
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This post was last edited by sunjl1981 on 2013-1-6 at 19:59. The overflow tube (outer layer) of our company’s brine pretreatment unit turned completely red overnight, with a red substance adhering to the tube wall; it’s unknown what this substance is (this red substance dissolves in hydrochloric acid). There is no color change inside the preprocessor overflow tube; the coloring occurs mainly on the outer wall, in the areas where the overflow saline flow passes through. I wonder if any of my friends have encountered a similar phenomenon? Any good ideas? I would appreciate your guidance! ， ， -
It can’t be iron ions; there is water inside, so rust doesn’t form. It’s the outer surface that comes into contact with air and turns into rust. Was too much ferric chloride used?
The amount of ferric chloride added was too large all at once
The color of the floating sludge should not be too dark; the ratio of saltwater to ferric chloride should be kept as low as possible
Maybe too much ferric chloride was used?
Everything upstairs is correct. Adjust the DCS FeCL3 flow curve and compare it with the liquid level drop curve of the sump to see who is neglecting their duties.
This situation is likely due to an excess amount of ferric chloride; observe the sludge discharge