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研究了北京市第九水厂处理工艺过程中卤乙酸的去除特性，并测定了五个水厂配水管网中卤乙酸的变化情况。结果表明：①传统水处理工艺对卤乙酸的去除率仅在20％以下；活性炭对卤乙酸的去除效果较好，不同运行时期的炭床对其进水中的卤乙酸去除率为50％～85％，去除的卤乙酸占预氯化后水厂进水中卤乙酸总量的40％～70％，其去除作用包括活性炭的吸附和炭床中的生物分解，两者所去除的卤乙酸量基本相同。②配水管网中影响卤乙酸变化的因素较多，如清水池停留时间较短，出水余氯较高，则可能在管网前部继续生成卤乙酸，使其浓度升高；在管网末梢，余氯较低，在微生物的作用下卤乙酸浓度将降低。
Characteristics of haloacetic acids (HAAs) removal were studied in Beijing No. 9 Water words. Changes of HAAs concentration in five distrbubion systems served by five water works were also measured. The results showed that: (1) HAAs removal efficiency was low by conventional treatment process, with a removal of less than 20 % . Activated carbon had a satisfactory removal for HAAs, with a removal of 50 % ～85 % depending on operation time of carbon bed, which consists of 40 % ～70 % of total HAAs in the raw ...
