管网饮用水三氯甲烷检测与影响因素分析

吴卿; 赵新华

doi:10.11847/zgggws2006-22-05-48

管网饮用水三氯甲烷检测与影响因素分析

吴卿,
赵新华

Detection and influente factors of trichloromethane in drinking water of network

摘要

摘要:
目的研究三氯甲烷(trichloromethane, TCM)在配水管网中的变化及其他水质指标对其生成量的影响。
方法对我国北方某市市区配水管网饮用水中TCM、自由余氯、254 nm紫外吸光度(UV254)、溴离子(Br-)等水质指标进行了监测。
结果自由余氯与TCM在管网中的变化呈一定的负相关关系。经较长距离的输配后管网水中的UV254与TCM呈现一定的负相关关系。Br-含量较低的监测点, Br-含量的变化与TCM浓度呈一定的正相关关系; Br-含量较高的监测点, Br-含量的变化与TCM浓度呈一定的负相关关系。
结论从水源污染、消毒剂的使用、出厂水水质稳定性和管网腐蚀4个方面, 分析了问题的原因并提出了相应的措施。

Abstract:
Objective To study the variety of trichlor omethane(TCM)in distribution network, and the influence of other parameter to the production of TCM.
Methods Detection was made on the parameters such as TCM, free chlorine, UV254 and Br-in a northern city distribution network of China.
Results Free chlorine had a good negative correlation with TCM.UV254 had good negative correlation with TCM after long distance distribution.the sampling sites with low Br-concentration had positive correlation with TCM; on the contrary, sampling sites with high Br-concentration had negative correlation with CM.
Conclusion
Results of the experiments were analyzed and measurement correspond to the problems were provided from four aspect as the pollution of source; the sort of the disinfector; water stability of the out flow and corruption of the distribution network.

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