2007年-2015年广州市水源水中10种金属检测结果分析

Analysis of the detection results of 10 metals in source water in Guangzhou during 2007-2015

目的对2007年-2015年广州市市政水厂和自建水厂水源水中10种金属[铁、锰、铅、汞、钡、镉、铜、锌、铬(Ⅵ)和铍]的检测结果进行分析,研究各水源水中金属的合格情况和变化规律。方法使用Excel软件对检测数据进行整理,使用SPSS 18.0软件对数据进行分析。结果铅和汞的合格率在不同水域之间差异无统计学意义(P>0.05)。铅的合格率在丰水期(95.0%)比枯水期低(100.0%),差异有统计学意义(χ2=7.129,P<0.01)。结论广州市水源水主要受铁、锰、铅和汞污染,应重点加强水源防护,防止工业污水污染水源导致的金属项目超标,铅合格率在丰水期时更低,应根据季节特征,不断加强和调整水处理工艺。

Objective To analyze the detection results of 10 kinds of metals,including iron,manganese,lead,mercury,barium,cadmium,copper,zinc,chromium（ Ⅵ） and beryllium in source water from Guangzhou municipal water works as well as self-built works during 2007-2015,and to understand the variation and qualified rates of metal in source water. Methods Using Excel to collect and SPSS 18. 0 to analyze the detective data. Results There was no statistical significance on the qualified rates difference of lead and mercury among different waters（ P 〉 0. 05）. Lead qualified rate was lower in wet season（ 95. 0%）than in the drought season（ 100. 0%）,with the difference statistically significant（ χ2= 7. 129,P 〈 0. 01）. Conclusion Guangzhou source water is mainly polluted by iron,mercury,manganese and lead. We should focus on source water protection,especially to prevent metal iron to exceed the standards which is caused by industrial waste water. Water treatment processes should be adjusted and strengthened according to seasonal characteristic based on the fact that the qualified rate of lead is lower during wet season.