摘要
目的通过在线监测数据,描述北京市2014年生活饮用水水质总体情况,分析各地区水质、水厂及供水管网特点,为卫生监督部门制定监管方案、优化在线监测系统提供参考。方法收集2013年12—2014年10月北京市不同区域7个市政水厂附近在线监测点的管网末梢水监测数据,整理为日平均值后进行统计分析,从数据有效性、月均值、日均值、地区差异等角度,对pH、浑浊度、余氯、电导率和总有机碳(TOC)五项指标进行综合分析比较。结果经统计学分析,各监测点的五项指标数据有效,日均值均有统计学差异。丰台区、大兴区的监测点位于南水北调水源地切换点,电导率变化趋势与水源切换时间相符。结论北京市城区市政管网供水监测点水质监测指标符合标准要求,市政水厂及供水管线中全年水质波动平稳。在线监测系统稳定性较好,通过各参数的实时监测能从一定程度上反映管网中水质变化,可进一步完善综合分析能力,普及推广。
Objectives To described the quality of drinking water in Beijing through on-line monitoring data in 2014; to analyze the characteristics of water works,water supply networks and water quality in some districts of Beijing to provide reference data for formulate regulatory schemes of supervision department and to optimize the on-line monitoring system. Methods The data collected from seven monitoring points were sorted out and analyzed on data validity,monthly and daily averages,district differences and so on; and five indexes on pH value,turbidity,residual chlorine,conductivity and total organic carbon（ TOC） were compared. Results According to the statistics analysis,the five indicators of the monitoring data are valid and the daily average values are statistically significant. Because of Fengtai district and Daxing district located in the south- north water switch point,the changing of the TOC is consistent with water switch time. Conclusions The quality of drinking water in Beijing municipal pipeline network could meet the requirements of the national standards. The stability of on-line monitoring system was good,which could reflect the water quality in the network to certain extent,and the iprovement of on-line monitoring is indispensable for comprehensive analysis and popularize among the water works in the capital.
出处
《环境卫生学杂志》
2016年第1期42-45,共4页
JOURNAL OF ENVIRONMENTAL HYGIENE
关键词
生活饮用水
末梢水
在线监测
drinking water
terminal piped water
on-line monitoring
