Find the reasons for the increase in the alkalinity of circulating water
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This post was last edited by 1025199692 on 2011-10-21 at 13:27. Recently, after adding water treated at the wastewater recycling station to our circulating water system, the alkalinity of that water increased; however, the analysis of the added water showed low levels of alkalinity. What could be the reason for this? The pH value is normal, so an increased concentration factor can be ruled out. What else?
I don’t know what kind of sewage it is? I suspect it’s due to certain chemical components in the make-up water reacting chemically with the raw water or additives ； It is recommended to add water and give it a try.
The wastewater is reused in the circulating water system. Do you have a water reuse system? What device is it? It is generally not feasible to directly use wastewater as a supplement to the circulating water; the parameters of the wastewater outlet must be analyzed carefully, and after examining the results, it can then be determined whether it is suitable for use as a supplement to the circulating water.
Have you tried stopping the replenishment of water to observe the changes in alkalinity? The problem might not be here. The recycled water used for replenishment in our facility has an even higher quality than the water used for production, with stricter control over its parameters.
Learn about *recirculating water systems, Beijing Sifang Dingtai Environmental Protection Technology Co., Ltd
Original poster, please check whether there are any leaks in the system.
If factors such as system leakage, human errors (addition of alkali), changes in make-up water, and system concentration have all been checked, the only thing left to examine is the process of measuring alkalinity, for example, whether the reagents used in the test were freshly prepared.
Consider the added ingredients, as well as drug quality issues.
Acid can be added, or the supply of make-up water can be stopped to observe the changes in alkalinity. The recycled water used for replenishment in our facility has a higher quality than the water used for production, with stricter control over its parameters
Excluding the issues of water replenishment and concentration ratio, it could be a problem with the leakage of alkaline materials or an issue with the analysis
There are likely issues with the water quality after wastewater treatment; therefore, the parameters of the make-up water should be strictly controlled, and monitoring and analysis should be carried out in accordance with relevant standards.