论文部分内容阅读
[目的]分析上海市松江区水厂水质质量监测数据,了解松江区水质质量变化趋势,为政府制定供水规划及监管措施提供科学依据。[方法]收集2006—2012年松江区水厂水源水和出厂水水质监测资料,分析各年度松江区出厂水合格率变化趋势及不合格指标分布情况,分析不同原水、不同制水工艺对出厂水水质的影响。[结果]2006—2012年松江区常规处理工艺水厂关闭了10座(镇级),深度水处理工艺水厂增加到了2座(区级)。出厂水水质合格率呈上升趋势(χ2=31.82,P<0.01)。出厂水水质以有机物污染为主,在出厂水总不合格项次中氨氮占44.61%、耗氧量占31.99%。使用相同原水,经深度处理工艺后氨氮、耗氧量的浓度低于常规制水工艺(t氨氮=4.529,P氨氮<0.01;t耗氧量=8.321,P耗氧量<0.01)。[结论]水源水质质量和制水工艺是影响水质的关键因素,扩大斜塘江原水的供应范围,全面使用深度处理制水工艺,对提高松江区水质质量有重要意义。
[Objective] The research aimed to analyze the monitoring data of water quality in Songjiang District of Shanghai, understand the trend of water quality in Songjiang District, and provide a scientific basis for the government to formulate water supply planning and supervision measures. [Method] The monitoring data of water source and outlet water quality of Songjiang District waterworks were collected from 2006 to 2012, the changing trend of qualified rate of outlet water of Songjiang District in each year and the distribution of unqualified indicators were analyzed. The effects of different raw water and different water-making technologies The impact of water quality. [Result] From 2006 to 2012, Songjiang District routine treatment water plant closed 10 (town level), the depth of water treatment water plant has increased to 2 (district level). The passing rate of factory water quality is on the rise (χ2 = 31.82, P <0.01). The quality of factory water is dominated by organic pollutants, accounting for 44.61% of ammonia nitrogen and 31.99% of oxygen consumption. After using the same raw water, the concentration of ammonia nitrogen and oxygen consumption after the advanced treatment was lower than that of the conventional water making process (t ammonia nitrogen = 4.529, P ammonia nitrogen <0.01; t oxygen consumption = 8.321, P oxygen consumption <0.01). [Conclusion] The quality of water source and water making process are the key factors that affect water quality. Extending the supply range of raw water in the area of the mainstream of the Xietang River and making full use of the advanced water treatment process are of great significance to improving the water quality in Songjiang District.