Ort Christoph, Siegrist Hansruedi
Swiss Federal Institute of Aquatic Science and Technology, Eawag CH-8600, Dübendorf, Switzerland.
Water Sci Technol. 2009;59(8):1593-601. doi: 10.2166/wst.2009.174.
Installation and maintenance of flow gauging stations to assess wastewater dilution in small creeks is expensive. The method outlined in this paper provides a flexible and cheap alternative for situations with dilution factors smaller than 10 and unambiguous flow direction. It is shown that conductivity profiles from three sampling locations enable accurate identification of the dilution factor with an uncertainty of +/-10-30%. Furthermore, much insight can be gained on the temporal behavior of both, the receiving water and the wastewater treatment system by combined analysis of conductivity and temperature data. In this case study the data also enabled identification and tracking down of illegal polluters.
安装和维护用于评估小河流中废水稀释情况的流量测量站成本高昂。本文概述的方法为稀释因子小于10且水流方向明确的情况提供了一种灵活且廉价的替代方案。结果表明，来自三个采样位置的电导率剖面能够准确识别稀释因子，不确定性为±10% - 30%。此外，通过对电导率和温度数据的综合分析，可以深入了解受纳水体和废水处理系统的时间行为。在本案例研究中，这些数据还能够识别和追踪非法污染者。
