GUOXiao-ming,XIEYao-hua,HUANGHui,et al.Process Optimization for a Conventional Water Treatment Plant in Southern China to Address Low Levels of 2-MIB in Raw Water[J].China Water & Wastewater,2025,41(3):22-27.
Process Optimization for a Conventional Water Treatment Plant in Southern China to Address Low Levels of 2-MIB in Raw Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第3期
Page:
22-27
Column:
Date of publication:
2025-02-01
- Keywords:
- 2-MIB; conventional water treatment process; pre-chlorination; powdered activated carbon; potassium permanganate
- Abstract:
- To address the new requirements for the limit of 2-MIB in the Standards for Drinking Water Quality (GB 5749-2022), a production-scale experiment was conducted at a conventional water treatment plant in southern China to tackle the removal of low concentrations of 2-MIB (10-25 ng/L) in the raw water. The study employed different treatment methods, including pre-chlorination, the separate addition of powdered activated carbon (PAC), and its combined application with potassium permanganate, to evaluate their removal efficiency and cost-effectiveness. The results indicated that pre-chlorination led to an increase in the concentration of 2-MIB in the finished water, whereas the addition of PAC at the raw water pump station was more effective than adding it in the reaction tank. More significantly, the combination of PAC with potassium permanganate not only achieved the same removal effect as PAC alone, but also had a lower cost. The research confirms that the strategy of adding PAC at the pump station in conjunction with potassium permanganate within the plant can effectively remove low concentration of 2-MIB in the raw water, ensuring that the finished water meets the new standards.
Last Update:
2025-02-01