针对含溴离子(Br-)的上海某水厂滤后水的高级氧化处理,考察了紫外/过氧化氢(UV/H2O2)技术对UV254和总有机碳(TOC)的削减效率、控制消毒副产物溴酸根(BrO3-)和三卤甲烷(THMs)的生成情况,同时研究了水中溴离子(Br-)浓度的改变对UV/H2O2处理效果的影响.结果表明,UV/H2O2处理工艺不产生BrO3-;500 mJ·cm-2的UV剂量和5 mg·L-1 H2O2投加量下,出水UV254和TOC分别降低了35％和21％;后续氯消毒过程中的THMs生成势随H2O2投加量的增加显著降低,500 mJ· cm-2的UV剂量下,H2O2投加量为5 mg·L-1和10 mg·L-1时,THMs生成势的削减率分别为49.4％和79.9％;水中Br-浓度的改变不影响UV/H2O2工艺的运行效果;相比UV,UV/H2O2还可使9种农药的降解率提高50％-85％.因此,UV/H2O2在含Br-水源水深度处理方面有着较好的应用前景.
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