萧山区5个水厂残留铝含量调查  

Investigation on residual aluminum content of five waterworks in Xiaoshan District

作　　者：张秋勉 陈燕 Zhang Qiumian;Chen Yan(Xiaoshan Water Supply Co.,Hangzhou 311201,China)

机构地区：[1]杭州萧山供水有限公司,浙江杭州311201

出　　处：《供水技术》2020年第4期18-21,共4页Water Technology

摘　　要：对萧山区5个水厂2018年1月至2019年1月的出厂水残留铝含量进行了统计分析。结果表明,出厂水铝含量均低于0.2 mg/L,满足现行饮用水国家标准。采用活性炭深度处理工艺的水厂出厂水铝含量明显低于采用常规工艺的水厂。出厂水的铝含量存在季节变化的规律性,每年的7—11月较其他季节明显升高约60%~391%,原因为原水pH的季节性变化。在铝的去除方面,沉淀池去除量最大,砂滤去除率最高。活性炭滤池将出厂水铝残留含量降低到了20μg/L以下的平均值水平。A statistical analysis on the residual aluminum content in the treated water from five waterworks in Xiaoshan District from January 2018 to January 2019 was taken.The results showed that the aluminum contents of the treated water were all lower than 0.2 mg/L,meeting the current national standard of drinking water.The aluminum content of the waterworks with advanced treatment process of activated carbon was significantly lower than that of the waterworks with conventional process.The aluminum content in water had the regularity of seasonal change,which was significantly higher from July to November than other seasons,and the increase range was about 60%~391%,due to the seasonal change of raw water pH.The sedimentation tank had the largest removal capacity and the sand filter had the highest removal rate on aluminum.Activated carbon filter reduced the residual aluminum content of water to an average value below 20μg/L.

关 键 词：残留铝 PH 水厂 饮用水 

分 类 号：TU991.13[建筑科学—市政工程]