Royal HaskoningDHV, Barbarossastraat 35, P.O. Box 151, 6500, AD, Nijmegen, The Netherlands.
Water Sci Technol. 2013;67(12):2712-8. doi: 10.2166/wst.2013.176.
Distributed temperature sensing (DTS) with fiber-optic cables is a powerful tool to detect illicit connections in storm sewer systems. High-frequency temperature measurements along the in-sewer cable create a detailed representation of temperature anomalies due to illicit discharges. The detection limits of the monitoring equipment itself are well-known, but there is little information available on detection limits for the discovery of illicit connections, as in mixing of sewers, and attenuation also plays an important role. This paper describes the results of full-scale experiments aiming to quantify the detection limits for illicit connections under various sewer conditions. Based on the results, a new monitoring set-up for (partially) filled sewer conduits has been proposed.
分布式光纤温度传感 (DTS) 是一种检测雨水管道系统中非法连接的强大工具。沿污水管内光缆进行高频温度测量，可以详细反映因非法排放而产生的温度异常。监测设备本身的检测限是众所周知的，但对于发现非法连接（如污水混合）的检测限，以及衰减的作用，相关信息却很少。本文介绍了旨在量化各种污水条件下非法连接检测限的全尺寸实验结果。基于这些结果，提出了一种用于（部分）充满式污水管道的新型监测设置。
