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以南方某微污染水源为研究对象,分析了二氧化氯、高锰酸钾、过氧化氢、臭氧和臭氧-过氧化氢不同预氧化剂对水体中三氯乙醛生成潜能(CHFP)的影响,以找出合适的预氧化剂及其适宜的投加量,为三氯乙醛(CH)的控制提供指导.结果表明,能够有效降低CHFP的化学预氧化方式依次为高锰酸钾、过氧化氢和二氧化氯,优化投加量分别为0.4、5.0、0.5 mg/L,对CHFP相应的去除率分别为43.66％、23.86％、21.86％;臭氧和臭氧-过氧化氢能够使CHFP含量增加或对其去除作用不明显,不适用于常规工艺中CH的控制.“,”The influences on chloral hydrate formation potential (CHFP) from different chemical pre-oxidants,chlorine dioxide (C1O2),permanganate (KMnO4),hydrogen peroxide (H2O2),ozone (O3) and ozone/hydrogen peroxide (O3-H2O2,) were studied for a micro-polluted water source in the south of China.Suitable pre-oxidants and corresponding optimum doses were determined to provide guidance for controlling chloral hydrate (CH) formation during drinking water treatment.The results indicated that the pre-oxidants of KMnO4,H2O2 and C1O2 could decrease CHFP effectively were,and corresponding optimum doses were 0.4,5.0 and 0.5 mg/L respectively,and the removal rates to CHFP were 43.66％,23.86％ and 21.86％ separately.In addition,O3 and O3-H2O2 were not suitable for controlling CH in the conventional treatment process because they could increase CHFP or not remove CHFP effectively.