How to deal with sodium hypochlorite that has a red color
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Friends, during the production of sodium hypochlorite, the color of the resulting sodium hypochlorite is purplish-red; we suspect this is due to rust from the chlorine pipelines mixing in. So I would like to ask whether something similar happens in everyone’s production as well? How was it handled? (This type of sodium hypochlorite that is red or purple in color is not desired by customers.) It is said that there is a substance that can be added to red sodium hypochlorite to remove the red color; what is this substance? Thank you.
The anti-corrosion issue with sodium hypochlorite tanks is quite serious; it’s better to let the customers handle it themselves, as the effort required to remove rust isn’t worth it.
I’ve heard of it, but I’ve never seen it, and I don’t know what substances are added to it.
The selection of equipment pipes is very important; where are you located?
This is a pipeline for draining waste from the liquefier, so 16-manganese steel is used; we certainly can’t use plastic pipes.
This post was last edited by nanren2 on 2016-4-17 at 14:18. The reddening of sodium hypochlorite usually occurs due to issues with iron pipelines and carbon steel equipment in the liquefaction process, or as a result of sulfuric acid from Naismith pumps at the filling station; this is because metal pipelines are not used in other areas. Chlorine is discharged under positive pressure in these areas, so you can install a small mist catcher before the metal pipelines enter the decontamination tower, and the problem will be resolved!
Check for iron and chlorine; sometimes it’s not necessarily an excess of iron that affects the color
It happened there as well, but not everything turned red; at that time we suspected iron contamination, so it was sold at a low price. Later, almost all of those affected pipes were replaced
It is best to treat them as defective products and have sales handle their disposal, or use the company’s own circulating water system to remove algae and kill bacteria
We’re all gradually adding it to the sodium with normal color～
Or just give it to customers who don’t care~