再生水用于地下回灌的加氯消毒研究

针对城市污水厂二级出水用于地下回灌的两种深度处理工艺，确定了达到消毒要求的加氯量，并且研究了加氯消毒对有关水质参数DOC、AOX、CHCl3、CCl4、UV254等的影响。研究发现，有效氯投加量在8mg/L左右时，水中细菌总数与总大肠菌群数均能达到我国饮用水卫生标准。加氯后水的DOC值变化不大，AOX值则有较明显的增大，CHCl3浓度略有增加，CCl4基本维持在加氯前的水平，UV254值也较加氯前有所增大。研究结果还表明，粒状活性炭处理工艺在污水深度处理流程中对去除消毒副产物（AOX）及其前驱物发挥着重要的作用。

Study on Chlorination of Reclaimed Wastewater Used for Artificial Groundwater Recharge

s: To enable the secondary effluentt to be used for groundwater recharge, chlorine dosages for two advanced treatment processes were determined to meet the disinfection requirement. The effects of chlorination on organic parameters such as DOC , AOX , CHCl 3, CCl 4, UV 254 were also studied. The results show that an available chlorine dosage of about 8 mg/L can make the total count of bacteria and the total coliforms meet the national sanitation standard for drinking water. After disinfection with chlorine, DOC changes very little, AOX increases significantly, CHCl 3 increases a little, CCl 4 almost does not change, and UV 254 also increases. The result also shows that the granular activated carbon plays a very important role in the removal of disinfection by-product - AOX and its precursors.