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首页> 外文会议>Beneath our feet: challenges and solutions >A Case Study at Vallejo Sanitation and Flood Control District: A Methodology for Assessing the Effectiveness of Sanitary Sewer Rehabilitation on Reducing Infiltration and Inflow
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A Case Study at Vallejo Sanitation and Flood Control District: A Methodology for Assessing the Effectiveness of Sanitary Sewer Rehabilitation on Reducing Infiltration and Inflow

机译：瓦列霍（Vallejo）卫生防洪区的案例研究：评估污水管道修复减少渗入和流入的有效性的方法

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摘要

The Vallejo Sanitation and Flood Control District (District) is undertaking a pilot program tornassess the effectiveness of sanitary sewer rehabilitation to reduce rainfall dependentrninfiltration and inflow (RDI/I). The pilot program includes measurement of flow andrnrainfall in selected basins within the District over an extended period, both before and afterrnrehabilitation of the sewer pipes and manholes in the basins. The goal of the program is tornmeasure the amount of reduction in RDI/I entering the system after completion ofrnrehabilitation and to determine the level of RDI/I flow reduction that may be expected ifrnrehabilitation is expanded to other basins.rnDue to a lack of standardized methodology for conducting RDI/I reduction assessments, arnnew methodology was developed for this project. The methodology includes use of controlrnbasins in which no rehabilitation was conducted. The control basins are intended to providernan indication of variations in RDI/I resulting from varying weather patterns. Data from therncontrol basins indicates that wide variations in RDI/I flow were observed that werernattributable to weather variations rather than sewer rehabilitation.rnThis paper provides an description of the methodology used to assess RDI/I reduction inrnthree basins including adjustments for variations in weather patterns. Varying levels ofrnrehabilitation and replacement of service laterals, main sewer lines, and manholes wererncompleted in the three selected basins..
机译：瓦列霍卫生与防洪区（区）正在实施一项试点计划，以评估下水道修复的有效性，以减少与降雨有关的渗入和流入（RDI / I）。试点计划包括在较长时期内对流域的下水道和检修孔进行修复之前和之后的区域内选定流域的流量和降雨量的测量。该计划的目标是撕裂恢复完成后进入系统的RDI / I减少量，并确定如果将恢复范围扩大到其他流域时可以预期的RDI / I流量减少水平。由于缺乏标准化的方法为了进行RDI / I减少评估，为此项目开发了arnnew方法。该方法包括不进行康复治疗的控制盆地的使用。控制流域旨在提供由变化的天气模式导致的RDI / I变化的指示。来自控制流域的数据表明，观测到的RDI / I流量变化很大，这是由于天气变化而不是下水道恢复。在三个选定的盆地中完成了不同程度的修复和服务支管，主要下水道管线和沙井的更换。

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