【摘要】 针对深圳市某饮用水厂供水管网水质进行了为期1年的调查监测研究。结果表明，供水管网取样点常规水质指标相对稳定，而管网水末端混浊度较出厂水升高了123.1%。相关性分析表明，高消毒剂的投加量能够有效控制管网中细菌的数量(R=-0.46,p≤0.001),同时抑制细菌对AOC的摄取。虽然增加消毒剂的投加量能有效抑制管网中细菌的活动，却也增加了水厂运营成本与消毒副产物生成的风险，建议水厂加强对AOC的监测与控制，供给优质饮用水。利用固相萃取和液相色谱质谱联用技术分析了深圳市某水厂供水管网中38种PPCPs和7种EDCs,并对新污染物的环境风险熵进行了评估。38种PPCPs在管网末端的风险熵均小于1,而EDCs中炔雌醇的风险熵(132.5)远超高风险限值，需要重点关注。更多还原

【Abstract】 In this work, the changes of water quality in water distribution system were investigated and monitored for one year. The results showed that the conventional water indicators in different water supply network points were relatively stable, but the turbidity of water in the end of networks rose by 123.7% compared with the finished water. Correlation analysis showed that high dosage of disinfectants can effectively control the total number of bacteria in the pipeline network(R=-0.46, p≤0.001), while inhibiting bacterial uptake of AOC. Though high disinfectant dosing can effectively inhibit bacterial growth in the pipe network, it also increased the risk of disinfection by-products generation. Therefore, it is recommended that the water plant should pay more attention on AOC to supply high quality drinking water. Solid phase extraction and liquid chromatography mass spectrometry were used to analyze PPCPs and EDCs in the water supply pipe network and the environmental risk quotients of these emerging contaminants were also evaluated. The risk entropy of PPCPs at the end of the pipeline network was < 1, but the risk quotient of ethinylestradiol(132.5) in EDCs exceeded the high-risk limit and needed attention.更多还原