基于常规处理工艺水中铊污染应急处理研究  

Research on emergency treatment of Thallium pollution in water based on conventional treatment process

作　　者：朱敏 卞卡 ZHU Min;BIAN Ka(Zhuzhou water Investment Group Co,,Ltd,Zhuzhou 412000,China)

机构地区：[1]株洲市水务投资集团有限公司,株洲412000

出　　处：《给水排水》2021年第8期28-31,78,共5页Water & Wastewater Engineering

摘　　要：由于湘江水体出现铊含量超过《地表水环境质量标准》(GB 3838—2002)规定限值0.0001 mg/L的现象,以湘江为水源的自来水厂供水安全受到威胁。为了保障供水水质安全,在株洲市某水厂进行了一系列的生产性试验,发现预氯化+强化混凝的方法对水中铊有较好的处理效果。结果表明:通过增加预处理加氯量,将沉淀出水余氯控制在0.4 mg/L以上,浊度控制在2.0 NTU以下,经砂滤池过滤后,水中铊含量明显降低,铊的去除率最高达93.94%,出厂水满足《生活饮用水卫生标准》(GB 5749—2006)的要求。该方法利用水厂现有常规处理工艺,无需增加或改造应急投加设施,通过调整运行参数,即可取得较好的除铊效果。According to the concentration of Thallium(Tl)in the Xiangjiang River exceeded the limit 0.0001 mg/L for Environmental quality standards for surface water(GB 3838-2002),and the safety of water supply water treatment plants intaking raw water from Xiangjiang River was threatened by Tl toxicity.In order to ensure the quality of water supply,we conducted a series of productive experiments in a water plant in Zhuzhou.It is found that the method of pre-chlorination and enhanced coagulation has a good treatment effect on Tl removal.These results indicate that the concentration of Thallium in water is significantly removed with removal rate as high as 93.94%by adjusting chlorination before coagulation taking place and maintaining the amount of chlorine residual remaining no less than 0.4 mg/L,the turbidity below 2.0 NTU,after passing through the sand filter.The clean water meets the requirements of Standardsfordrinkingwaterquality(GB5749-2006).The method utilizes the existing conventional water treatment process,no need to add or modify dosing emergency facilities,we can achieve a better Tl removal effect by adjusting the operating parameters.

关 键 词：源水突发性污染 预氯化 强化混凝 铊 

分 类 号：TU991.2[建筑科学—市政工程]