What causes the circulating water to turn red?
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In the circulating water system of the coking plant, the water turned red; initially, it was thought to be corrosion, which led to an excessive iron content. However, after testing, the total iron content in the circulating water was less than 0.5. With such low total iron levels, the color of the circulating water won’t be so dark. May I ask, apart from total iron, what other factors can cause the circulating water system to turn red? By the way, when testing total iron and sodium sulfite was added, the color of the circulating water turned colorless. These must be the phenomena where sodium sulfite converts trivalent iron into divalent iron, right? But why can’t it be detected?
What system is it, and is there any material leakage? The change in color upon adding sodium sulfite indicates the presence of oxidizing substances.
This system is the circulating cooling water system of a coking plant. Think about it – what other substances or ions have this property: 1. They appear red in water. 2. Upon adding sodium sulfite salts, it changes from red to colorless. I hope everyone will speak up actively!
Is it possible that the heat exchanger is leaking, causing the material to leak into the circulating water?
It’s likely that phenolic substances have entered the circulating water system……
It seems that the sediment in the circulating water has come loose, which is why the water has turned red. I noticed that the amount of floating sediment on the columns of our circulating water cooling towers has decreased significantly; in the water itself, it appears red (earthy-colored).
Have you tested the composition of the attached mud? Does it contain corrosion products?
We haven’t added any water from industrial production to our circulation pool for a month; a small amount was added in an emergency a few days ago, and in less than 10 minutes rust and mud in the pipes caused the entire pool to turn red. It was cleaned just less than 2 months ago.
This post was last edited by Obba on 2014-7-16 at 17:50. Hello, red discoloration of circulating water is usually caused by corrosion and excessive levels of total iron. Issues related to water treatment can be discussed on Environmental Protection Network. It is recommended to carry out cleaning and coating treatments for the system, add corrosion and scale inhibition agents, and ensure proper sterilization. The phenol content can also be tested; generally, if wastewater contains phenol, it will turn red when exposed to air.
Learned*: victory:
Our water quality has deteriorated significantly recently; ammonia levels are above the acceptable range. However, the pressure in the recirculation water system is very high, so the possibility of ammonia seeping in is minimal