What to do if the circulating water is acidic
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Since acid from equipment perforations has entered the circulating water system, is there any way to deal with it? Can it be neutralized with a base? What are the disadvantages of doing this, and what consequences might arise? Hydrochloric acid is injected into the water system
Personally, I think it’s better to increase the volume of cyclic replacement
Alkali can be added for neutralization, but attention must be paid to the pH level, as well as increasing the amount of displacement. Deal with leaking equipment promptly.
In response to the original poster’s question, the following suggestions are offered: 1. The top priority is to address the leaking equipment as soon as possible, as this is the fundamental solution. Otherwise, the acid will be leaking at all times, requiring neutralization with alkali constantly, which is not worth it and is not a viable approach. 2. If the pH is only slightly low, it is recommended to replace it with additional water (but ensure that the pH of the wastewater discharged meets the required standards) ； If the PH is significantly low, it indicates significant leakage; in such cases, alkali can be added to neutralize it, and at the same time, more water should be supplied for replacement.
The pH of the circulating water should be between 6.8 and 9.5; it depends on the level of alkalinity. Adding alkali is only a temporary solution – the leakage points must be sealed! If it’s not possible to stop production for the time being, the circulation rate and wastewater discharge volume can be increased; however, it’s difficult to determine the right amount of alkali to use!
Seal the leaks first. Na3PO4 can be added for neutralization.
That set of coolers should be removed as a solution; if it’s not possible to shut down the system, then close the outlet valve and direct the condensate to an external discharge site to prevent contamination of the entire system.
The circulating water is acidic, mainly due to leaks in the heat exchangers, which allow acidic fluids to mix into the circulating water. So, first, it is necessary to identify and fix any leaks, and second, add an appropriate amount of alkali for neutralization.
The top priority is to identify the source of leakage in the equipment; the water flow should be stopped and the water discharged directly outside (check the pH value of the discharged water, and recycle it to the wastewater treatment system if necessary). Production processes must be adjusted, and the leakage issue must be repaired as soon as possible.
The acidity problem in circulating water can be addressed by dilution or adding alkali, but to eliminate the underlying risk, the key is to fix leaks in the equipment
1 Seal leaks. 2 Neutralize with Na3PO4. 3 Replace the circulating cooling water as quickly as possible; high chloride levels are really troublesome
All of the acidic water should be drained; the consequences can be severe. We’ve encountered the same problem before, and it’s especially important to pay attention to the circulating water pipes over time for any signs of leaks or defects, especially when the quality of the pipes is poor.
Replacing with water results in excessive water waste; if the acidity is not high, alkali can be added to neutralize it appropriately. But first, the area where acid is leaking needs to be dealt with as soon as possible.
In such cases, the leak should be repaired immediately; at the same time, alkali should be added to the circulation tank to raise the pH level above 7, and circulation should be resumed as soon as possible to prevent further corrosion of the system and avoid greater losses.
Neutralize with alkali – can you ensure proper control over the amount added? It’s better to first deal with the equipment used for perforation; meanwhile, as mentioned above, increasing the volume of water in the circulation system will help dilute the hydrochloric acid, and it’s more appropriate to treat the circulating water after that.
It is necessary to identify the heat exchange equipment that may have penetrated into the acidic medium and conduct a thorough inspection of each one; until a result is obtained, the amount of waste discharged can be increased
1. Identify and address the leakage points such as the version changers that cause leaks, and repair them as much as possible. 2. Increase water replacement. 3. Na2CO3 can be considered, along with appropriate monitoring of the pH value
Alkali can be added for neutralization, but attention must be paid to the pH level, as well as increasing the amount of displacement. Deal with leaking equipment promptly.
⒈First, it’s necessary to identify and fix any gaps； ⒉Add sodium carbonate or trisodium phosphate, and measure the pH value promptly ； ⒊Increase the amount of fresh water replaced. Last edited by Zhongyuanren on 2009-3-19 08:42]
A lot has already been said upstairs regarding the issue of high acidity; adding alkali to neutralize it can only serve as a temporary solution. If too much alkali is used, scaling in the pipes may occur severely, so this issue must be addressed as soon as possible.