将TiO2光催化臭氧氧化-生物活性炭(TiO2/UV/O3-BAC)组合工艺用于处理水源水,在优化工艺参数的条件下,该工艺对水源水中溶解性有机碳(DOC)的平均去除率为46.5%, 而UV/O3-BAC工艺对DOC的平均去除率仅为41.6%. TiO2/UV/O3-BAC工艺对有机物去除的协同效应较强. TiO2/UV/O3过程将水中的大分子有机物氧化成小分子,提高了出水的可生物降解性,从而有利于后续的BAC对有机污染物的去除. TiO2/UV/O3-BAC工艺对持久性有机污染物的去除非常有效. 其中,酞酸酯的去除率均大于94%, 但随着烷基链长度的增加而降低; 多溴联苯的去除率均超过89%, 但随着溴原子取代数目的增加而降低.
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