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SIZING REPLACEMENT INTERCEPTORS: BEYOND TEN STATES STANDARDS

机译:尺寸替换拦截器:十个州标准以外

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The sizing of larger sanitary sewer trunk lines and interceptors has been a vague practice. Using a typical peaking factor applied to a serviced population at an average dry weather flow (e.g., 10 States Standards) has been the traditional approach. This approach (assuming well-designed, specified, and installed pipe) is acceptable for new collection systems; but what about aging systems? What happens when the existing collection system contributes high amounts of clean water, either in the form of inflow or rainfall-induced infiltration? As the nation's sanitary sewer infrastructure continues to deteriorate, and as the miles of collector pipes and laterals increasingly leak, leading to sanitary sewer overflows (especially in the form of backups in residential homes), the sizing of replacement and relief trunk lines and interceptors has become increasingly important. How do we adequately convey the wastewater flow during wet-weather events without undersizing or oversizing the relief interceptor or unnecessarily increasing construction costs? A procedure to size replacement interceptors using flow monitoring data collected on existing interceptors in response to wet weather events can provide the answers.
机译:较大的下水道主干线和拦截器的尺寸确定是一种模糊的做法。传统方法是在平均干燥天气流量下(例如10个州标准)使用适用于服务人群的典型峰值因子。这种方法(假设设计,指定和安装良好的管道)适用于新的收集系统;但是老化的系统呢?当现有的收集系统以入流或降雨引起的渗透形式提供大量清洁水时,会发生什么?随着国家的污水管道基础设施持续恶化,以及集水管和支管的泄漏越来越多,导致污水管道溢出(尤其是住宅房屋中的备用管道),更换和泄压干线和拦截器的尺寸越来越大变得越来越重要。我们如何在雨天天气期间充分输送废水流量,而又不会使救援拦截器的尺寸过大或过大,也不会不必要地增加建筑成本?响应潮湿天气事件,使用在现有拦截器上收集的流量监控数据来确定替换拦截器大小的过程可以提供答案。

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