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【目的】河水、地下水和雨水等外水进入市政污水管网，将引起污水管网流量剧增、污水漫溢和污水厂污染物进水浓度偏低等一系列问题，对外水水量的估计与定位已成为提高污水管网系统运维水平先决条件。为确定工作重点并节约外水检测成本，【方法】主要介绍了市政污水管网的外水入侵途径、外水水量的评估方法、以及外水定位的技术及其相关应用，针对假设条件、精度、实施难易程度与评估成本等方面进行综合评估，全面分析了外水水量估计与定位方法的优缺点，总结了污水管网外水查找现阶段存在的问题和今后发展的方向，以攻克外水规模摸排、问题管网预判等难题。【结果】结果显示：外水水量评估结果势必存在误差，不同方法的适用条件、评估精度不一；外水定位难以实现大范围普查，存在检测难度高、技术受限等问题，外水水量估计与定位方法的择定至关重要。【结论】结果表明：污染物时间序列法虽评估费用昂贵但精度高，有望在今后工程应用中普及化；DTS的可实施性强，运维成本低，相比于传统的CCTV检测，能较为准确的反应外水入侵的动态变化，具有良好的外水定位发展前景。研究成果可作为城市市政污水管网外水量估计、定位和治理的参考。
Abstract：[Objective] External water such as river water, groundwater and rainwater entering the municipal sewage network will cause a series of problems such as sharp increase of discharge, sewage overflow and low pollutant influent concentration in sewage plants, etc. The estimation and location of external water volume has become a prerequisite for improving the operation and maintenance of sewage network system. In order to determine the focus of the work and save the cost of external water detection, [Methods] The way of external water intrusion, the evaluation method of external water quantity, as well as the technology of external water location and its related application of municipal sewage network are introduced. It evaluates The assumptions, accuracy, implementation difficulty and evaluation cost are evaluated, and the advantages and disadvantages of the estimation and location method of external water quantity are comprehensively analyzed. The existing problems and the future development direction of sewage network external water search are summarized, in order to overcome the scale of external water drainage, problem network prediction and other problems. [Results] There is bound to be errors in the evaluation results of external water quantity, and the application conditions and accuracy of different methods are different. It is difficult to realize large-scale survey of external water location, and there are some problems such as high detection difficult and limited technology. Therefore, the selection of external water amount estimation and location method is very important. [Conclusion] The results show that the pollutant time series is expensive, but its accuracy is high, which is expected to be popularized in future engineering applications. DTS has strong feasibility and low operation and maintenance cost. Compared with traditional CCTV detection, it can more accurately reflect the dynamic changes of external water intrusion, and has a good development prospect of external water positioning. The research results could serve as a reference for the estimation, positioning and management of extraneous water in the municipal sanitary sewer.
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基本信息:
DOI：10.13928/j.cnki.wrahe.2023.02.018
中图分类号:TU992.2
引用信息:
[1]庞晶津,黄棚兰,陈仪,等.市政污水管网的外水水量估计与定位研究进展[J],2023,54(02):190-204.DOI:10.13928/j.cnki.wrahe.2023.02.018.
基金信息:
国家自然科学基金项目(51478410)