Analysis of the Causes of Excessive Manganese and Discussion on Treatment Measures in a Waterworks in Cangnan County
DOI:
https://doi.org/10.71204/0an4m909Keywords:
Excessive Manganese in Water, Reservoir Water Source, Pre-Chlorination, Potassium Permanganate Composite Salt, Manganese Removal TechnologyAbstract
Excessive manganese in the effluent of a waterworks in Cangnan County not only leads to sensory abnormalities of drinking water but also poses a potential threat to human health, which has become an urgent water quality problem to be solved. In this study, flame atomic absorption spectrophotometry was adopted to determine the manganese concentration in water samples at each treatment stage, so as to evaluate the actual effect of different manganese removal processes. Aiming at the problem of excessive manganese in raw water, the waterworks optimized the conventional water treatment process by taking measures such as strengthening pre-chlorination and adding potassium permanganate composite salt. The results showed that both measures could effectively oxidize soluble divalent manganese into insoluble tetravalent manganese, which was then intercepted and removed by the filter, and the manganese content in the final effluent was stably controlled below the limit value of 0.1mg/L specified in GB 5749-2022. This study not only effectively solved the problem of excessive manganese in the waterworks but also provided a practical and feasible technical reference for the treatment of excessive manganese in reservoir water sources of similar waterworks in southern China.
Downloads
References
Cheng, Y., Wang, X., Zhang, H., et al. (2021). Methods for removing excessive manganese from reservoir water and manganese removal by potassium permanganate. Water Purification Technology, 40(S2), 76–79, 83.
Li, X. (2022). Research progress and prospect of manganese removal technology in drinking water. Agriculture and Technology, 42(3), 86–89.
Li, X., Li, X., Li, Z., et al. (2023). Research and production practice of chemical oxidation manganese removal technology in water supply plants. Urban Water Supply, (5), 9–16.
Ma, X., Wu, C., Xue, L., et al. (2023). Principles and technical progress of iron and manganese removal from drinking water. Journal of Xi’an University of Arts and Sciences (Natural Science Edition), 26(3), 81–87.
State Administration for Market Regulation of the People’s Republic of China, & Standardization Administration of the People’s Republic of China. (2022). Sanitary standards for drinking water (GB 5749–2022). China Standards Press.
Downloads
Published
Issue
Section
License
Copyright (c) 2026 Zuqing Li, Weiwei Fu (Author)
This work is licensed under a Creative Commons Attribution 4.0 International License.
All articles published in this journal are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are properly credited. Authors retain copyright of their work, and readers are free to copy, share, adapt, and build upon the material for any purpose, including commercial use, as long as appropriate attribution is given.
How to Cite
