钱塘江水中有机污染物的检测与纳滤脱除研究

Study on detection and nanofiltration removal of organic pollutants in water of Qiantang River

以钱塘江为水源的杭州市大部分自来水厂,不同程度受到成潮上溯与有机污染物的影响,存在严重的饮水安全隐患问题.在2009～2011年间,定期对受潮汐影响的钱塘江水体进行取水采样,对水源中的有机污染物监测分析.结果表明,钱塘江水源中含有超过国标的有机污染物,下游潮汐上溯会增加水体中有机污染物的含量,而传统自来水工艺脱除微量有机污染物效果不甚理想.为此,本文开展纳滤法处理脱除钱塘江原水中微量有机物的研究,该过程对UV254、TOC、CODMn的平均去除率分别达到77.83％、62.71％、67.81％,可促进饮用水安全保障.

Qiantang River,as the source of water plants of Hangzhou,is always affected by salt tide and organic pollution,and there were serious potential hygienic risks of dringking water.In this paper,the raw water from Qiantang River was regularly detected from 2009 to 2011,organic pollutants in which were monitored and analyzed.The result showed that the content of organic pollutants in the Qiantang River was higher than China＇s drinking water standard,and the value could increase because of tide.Traditional process of tap water couldn＇t remove these organics very idealy.So,a nanofiltration process was developed,and the average removal rates of TOC,UV254 and CODMn were 62.71％,77.83％ and 67.81％ respectively.It could promote the safety of drinking water.