水厂深度处理工艺对上海青草沙原水的处理效果

Effects of advanced treatment in waterworks on source water from Qingcaosha in Shanghai

目的了解上海青草沙原水经深度处理后水质变化。方法于2017—2018年,选择浦东新区深度处理工艺水厂1家(A厂)以及常规处理工艺水厂2家(B、C厂),分析每月水质检测数据。结果3个水厂的出厂水符合《生活饮用水卫生标准》(GB 5749—2006)要求,均合格。深度处理工艺的A厂水样中耗氧量、铝、三氯甲烷的浓度均低于常规处理工艺的B厂和C厂,差异有统计学意义(P<0.05)。水样中耗氧量与三氯甲烷呈正相关(r=0.258,P<0.05)。结论深度处理工艺对出厂水中的铝、三氯甲烷和耗氧量指标具有明显的改善作用。

Objective To obtain information about the current Qingcaosha water quality after being processed by advanced treatment technology in waterworks in Shanghai,and the improvement effects of the technology.Methods A waterwork in Pudong New District with advanced treatment technology(Works A),and two other waterworks with conventional treatment technology(Works B,Works C)were selected,and the monthly water quality data were collected and analyzed.Results Evaluated by Standards for Drinking Water Quality(GB 5749-2006),the samples of finished water from the three waterworks all met the standard.The levels of COD,aluminum and trichloromethane in the finished water samples from Works A with advanced treatment technology were all lower than those from Works B and Works C with conventional treatment technology with significant differences(P<0.05).COD was positively correlated with trichloromethane(r=0.258,P<0.05).Conclusion Advanced treatment technology has evidently improvement effects on the processed water in terms of aluminum,trichloromethane and COD.