Both constant head water and electrodialysis cut water turn black
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Why does the water from electrodialysis desalination, as well as the normal overhead water, turn black?
The main reason for the blackening of water after electrodesalination is likely the presence of large amounts of sludge in the crude oil; blackening can also occur if oil is present； If the surface of the constant-pressure cutting water turns black, it is caused by corrosion, so attention should be paid to corrosion prevention.
What is the pH value of the dehydration pack in the constant-top reflux tank?