隧道施工废水处理及回用技术

On the Treatment of and the Recycling Techniques for Waste Water from the Construction of Tunnels

对公路隧道施工废水的来源、监测项目、指标及危害等方面进行分析,阐述隧道施工废水主要污染类型为SS、NH 3 N、pH值及石油类。通过对4种常见的废水污水处理技术特征、优缺点、成本等方面进行综合对比分析,并根据公路隧道施工特点,采用最为简单的A/O处理工艺,废水处理后达到排放要求,且运行成本低廉、技术成熟。重点介绍了所采用的废水处理技术各部分组成及功能,为选用适合的废水处理技术提供了借鉴。

Upon the basis of analyzing the sources of the waste water from the construction of highway tunnels,the monitored items,targets,harms and the like,dealt with in the present paper are the main pollution targets of the waste water from the construction of tunnels,which include the pH values of SS,NH 3N,petroleum and the like.Through the comprehensive comparison and analysis of the characteristics,the merits and demerits and the costs of the four commonly-used waste water-treating techniques and also according to the construction characteristics of highway tunnels,the simplest A/O treating process is finally adopted.After being treated by the above mentioned techniques and methods,the quality of the treated waste water reaches the discharge standard.Besides,the operating cost is low,and the techniques adopted are ripe.The paper focuses itself on introducing the composition and functions of each part of the treating techniques adopted for the project.It may serve as a useful reference for the choice of the right treating techniques for other projects.