引汉济渭工程秦岭隧洞岭北段施工废水污染物解析

ANALYSIS ON POLLUTANTS OF CONSTRUCTION WASTEWATER IN NORTHERN SECTION OF QINLING TUNNEL OF THE YINHANJIWEI PROJECT

秦岭隧洞是引汉济渭工程的主要组成部分,在秦岭隧洞岭北段施工过程中产生了大量的施工废水,直接排放会对周围环境产生诸多不利影响。通过对秦岭隧洞岭北段施工废水的分析监测,全面解析废水中污染物种类及来源,研究表明,该隧道施工废水属于高SS、低COD、含有较少量氮磷等营养物、无重金属等有毒有害物质的无机污染性废水。同时,基于隧道施工方法的特点,分析隧洞施工废水中污染物的浓度变化模式,为施工废水处理工艺的选择提供依据与参考。

The Qinling tunnel is a major component of the Yinhanjiwei Project,a lot of wastewater was generated in the construction process of the northern section of Qinling tunnel. The wastewater might have a detrimental impact on the surrounding environments if direct emissions. The analysis and monitoring of the construction wastewater of the northern section of Qinling tunnel were implemented,and it was comprehensively analyzed the types and sources of pollutants in wastewater. The study showed that this tunnel construction wastewater is inorganic pollution wastewater with high SS,low COD,little nitrogen and phosphorus nutrition and no toxic or harmful substances,such as heavy metals. Moreover the concentration changing pattern of tunnel construction wastewater pollutants was analysed,according to the characteristics of the tunnel construction method. The results of this study can provide useful information and the reference for the selection of suitable treatment process for tunnel construction wastewater.