净水技术2025，Vol.44Issue(2)：72-78,94,8.DOI:10.15890/j.cnki.jsjs.2025.02.008
水厂常规工艺强化去除原水中的2-MIB
Enhanced 2-MIB Removal in Raw Water by Conventional Processes of WTPs
李土雄 1刘伟 1刘岳峰 1范丹 1李抄 1曾立章 1叶晓华1
作者信息
- 1. 深圳市深水宝安水务集团有限公司,广东深圳 518000
- 折叠
摘要
Abstract
[Objective]In order to adapt to the limit value requirements of the Standards for Drinking Water Quality(GB 5749-2022)for 2-methyl isoethanol(2-MIB),improve the ability of conventional processes to remove 2-MIB[Methods]This paper studied the production measures of water treatment plants(WTPs)with conventional process to improve 2-MIB removal effect,and formed a set of full-process multi-stage barrier 2-MIB control technology routes suitable for WTPs with conventional processes,with the optimization of preoxidation,two-stage powder carbon adsorption and filter biodegradation as the core.[Results]Results showed that main measures to strengthen 2-MIB removal effect of the WTP with conventional process included optimizing the preoxidant,using potassium permanganate instead of sodium hypochlorite preoxidation,and the amount of potassium permanganate should not exceed 0.3 mg/L and the adsorption of powder activated carbon could significantly improve the 2-MIB removal effect.The water head built the powder carbon adding point and the adding device to realize the raw water+two-stage powder carbon in the WTP,prolong the powder carbon adsorption time;optimize and adjust the production and operation process in WTP(including stopping the use of sodium hypochlorite before filtration,backwashing without chlorine,prolong the filtration cycle,reduce the recoil strength,etc.),which could effectively improve the biodegradation effect of ordinary sand filter on 2-MIB.The culture cycle was about 4 months The stability reached about 90%,and 2-MIB of the water after filtration was stable below 10 ng/L.[Conclusion]Through the above measures,the removal efficiency of 2-MIB in the conventional process can be effectively improved,and the factory water can reach below the national standard limit.关键词
常规工艺水厂/2-甲基异莰醇/预氧化/粉末活性炭/滤池生物降解Key words
conventional process of WTP/2-methylisobornol(2-MIB)/pre-oxidation/powder activated carbon(PAC)/fliter biodegradation分类
建筑与水利引用本文复制引用
李土雄,刘伟,刘岳峰,范丹,李抄,曾立章,叶晓华..水厂常规工艺强化去除原水中的2-MIB[J].净水技术,2025,44(2):72-78,94,8.
