CAJ | 학술논문

目的了解江苏省某水厂不同工艺过程及管网水样中消毒副产物(DBPs)的生成水平.方法于2011年7月份采集该水厂各加氯环节、出厂和管网水样12份,经液液萃取后,以气相色谱电子捕获器检测水中三卤甲烷、卤乙酸、碘乙酸、碘仿、卤乙腈、卤代酮、硝基甲烷类消毒副产物,经固相萃取后,以气相色谱质谱仪检测亚硝胺类消毒副产物,各消毒副产物浓度以双份平行水样检测结果的平均值表示.结果原水中含有一定量的二溴一氯甲烷(0.61 μg/L)、氯仿(1.64 μg/L)和N-亚硝基二甲胺(3.06 ng/L),其他消毒副产物均来自饮水加工过程.预加氯后可形成卤乙酸、卤代酮、卤乙腈和亚硝胺类等消毒副产物,前三者浓度分别为5.01、0.66、0.57 μg/L,后者浓度为98.09 ng/L.后加氯和补加氯后三卤甲烷和卤乙酸等迅速增加至70.31和43.71 μg/L,而亚硝胺类未增加.消毒副产物均以出厂水浓度最高,其中,三卤甲烷(70.311μg/L)和卤乙酸类(43.711μg/L)分别以一溴二氯甲烷(34.12μg/L)和三氯乙酸(13.45 μg/L)浓度最高；卤乙腈类、卤代酮类、三氯硝基甲烷出厂水样浓度分别为14.96、2.32、0.96 μg/L,N-亚硝基二甲胺、N-亚硝基二丙胺2种亚硝胺类副产物出厂水样浓度分别为21.22、69.43 ng/L；碘乙酸、碘仿及亚硝基甲乙胺、亚硝基二乙胺、亚硝基吡咯烷、亚硝基吗啉、亚硝基哌啶、亚硝基二丁胺等副产物均未检出.结论该水厂多项DBPs浓度较高,应采取措施对其进行控制.
목적 료해강소성모수엄불동공예과정급관망수양중소독부산물(DBPs)적생성수평.방법 우2011년7월빈채집해수엄각가록배절、출엄화관망수양12빈,경액액췌취후,이기상색보전자포획기검측수중삼서갑완、서을산、전을산、전방、서을정、서대동、초기갑완류소독부산물,경고상췌취후,이기상색보질보의검측아초알류소독부산물,각소독부산물농도이쌍빈평행수양검측결과적평균치표시.결과 원수중함유일정량적이추일록갑완(0.61 μg/L)、록방(1.64 μg/L)화N-아초기이갑알(3.06 ng/L),기타소독부산물균래자음수가공과정.예가록후가형성서을산、서대동、서을정화아초알류등소독부산물,전삼자농도분별위5.01、0.66、0.57 μg/L,후자농도위98.09 ng/L.후가록화보가록후삼서갑완화서을산등신속증가지70.31화43.71 μg/L,이아초알류미증가.소독부산물균이출엄수농도최고,기중,삼서갑완(70.311μg/L)화서을산류(43.711μg/L)분별이일추이록갑완(34.12μg/L)화삼록을산(13.45 μg/L)농도최고；서을정류、서대동류、삼록초기갑완출엄수양농도분별위14.96、2.32、0.96 μg/L,N-아초기이갑알、N-아초기이병알2충아초알류부산물출엄수양농도분별위21.22、69.43 ng/L；전을산、전방급아초기갑을알、아초기이을알、아초기필각완、아초기마람、아초기고정、아초기이정알등부산물균미검출.결론 해수엄다항DBPs농도교고,응채취조시대기진행공제.
Objective This work aimed to investigate the carbon-,nitrogen-,iodine-containing disinfection by-products(DBPs)formation and pollution situation in different treatment processes and pipe water of a water plant in Jiangsu province China.Methods 12 water samples were collected from raw water,different time points after the addition of chlorine,finished water and pipe water in July,2011.Trihalomethanes(THM4),haloacetic acids(HAA6),haloacetonitriles(HANs),chloropicrins(CPs),haloketones(HKs),iodoform(IF)and iodoacetic acid(IAA)were detected by gas chromatography with electron capture detector(GC-ECD)after liquid-liquid extraction.Nitrosamines(NAms)were detected by gas chromatography with mass spectrometer(GC-MS)after solid-phase extraction.The concentration of DBPs was represented as the mean of duplicate samples.Results Most DBPs were found in water treatment processes except dibromochloromethane(0.61 μg/L),chloroform(1.64 μg/L)and N-nitrosodimethylamine(3.06 ng/L),which were detected in raw water.Pre-chlorination formed HAA6(5.01 μg/L),HKs(0.66 μg/L),HANs(0.57 μg/L)and NAms(98.09 ng/L).Chlorination and postchlorination led to a dramatic increase in the levels of THM4,HAA6(70.31 and 43.71 μg/L,respectively),while Nams didn't increase.In finished water,bormodichloromethane(34.12 μg/L)had the highest concentration among THM4(70.31 μg/L),and so was trichloroacetic acid(13.45 μg/L)among HAA6(43.71 μg/L).Levels of HANs,HKs,and CPs were 14.96,2.32,0.96 μg/L,respectively.Levels of N-nitrosodimethylamine and N-nitrosodipropylamine were 21.22,69.43 ng/L,respectively.IAA,IF and other six NAms including N-nitrosomethylethylamine,N-nitrosodiethylamine,N-nitrosopyrolidine,N-nitrosomorpholine,N-nitrosopiperidines and N-nitrosodibutylamine were not detected in all water samples.Conclusion Levels of DBPs in this water plant are relative high.and measures should be taken to control DBPs.