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O3-BAC工艺对含溴水体消毒副产物生成势的影响
杨宏伟, 王昊宇, 刘云霞, 刘文君, 杨少霞
清华大学学报（自然科学版） ›› 2014, Vol. 54 ›› Issue (5) : 607-612.
PDF(1346 KB)
PDF(1346 KB)
O3-BAC工艺对含溴水体消毒副产物生成势的影响
Ozone-biological activated carbon treatment of DBP in high-bromide water
该文主要研究了含溴水体在经过臭氧-生物活性炭(O3-BAC)工艺处理前后消毒副产物生成势的变化。通过加氯培养测定三卤甲烷(THMs)和卤乙酸(HAAs)的生成势。结果表明: 进水经过臭氧-生物活性炭系统处理后,总三卤甲烷(TTHM)和9种卤乙酸(HAA9)的生成势均降低了20 μg/L左右, 抑制率在30%以上。其中,主要去除的是一些含氯的消毒副产物如三氯甲烷、二氯乙酸和三氯乙酸的前体物。当原水中含有高质量浓度的Br-时,臭氧化可能会导致含溴消毒副产物(如三溴甲烷、一溴乙酸和二溴乙酸)占总消毒副产物的分配比例升高。同时,研究表明: 活性炭对于溴代副产物(Br-DBPs)前体物的去除效果低于氯代副产物(Cl-DBPs), 因此在经过Q3-BAC工艺处理后,消毒副产物生成势中,溴代产物所占分配比例进一步增加。
The disinfection by-product (DBP) formation of high-bromide water was evaluated before and after ozone and biological activated carbon (O3-BAC) treatment. The objective is to remove trihalomethanes (THMs) and haloacetic acids (HAAs) formed by adding chlorine. The results showed that the O3-BAC treatment reduced the total trihalomethanes (TTHM) and nine haloacetic acid (HAA9) by 20 μg/L. The inhibitory rate was above 30%. Precursors of chloro-byproducts (Cl-DBPs) like chloroform, dichloroacetic acid and tichloroacetic acid were also removed. Chloriation of high-bromide water increases the proportion of bromo-byproducts (Br-DBPs) such as bromform, bromoacetic acid and dibromoacetic acid after the pre-ozonation. The BAC treatment reduces the Br-DBP less than that of Cl-DBPs, which resulted in further increases of the Br-DBP proportion.
臭氧(O3) / 生物活性炭(BAC) / 三卤甲烷(THMs) / 卤乙酸(HAAs) / 溴
ozone (O3) / biological activated carbon (BAC) / trihalomethanes (THMs) / haloacetic acid (HAAs) / bromide
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