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This paper will present the results of an interceptor system and flow metering evaluation of a regional sewage disposal district in southeastern Michigan and how the evaluation was used to generate an automated method for calculating a community's flow rate. The monitoring of community flows and analysis of data collected through the monitoring program are essential for the effective management of a regional system and its compliance with regulatory requirements. Calculating flow rates generated by communities is complicated by the fact that none of the communities can be directly metered and many often have multiple connections to the interceptor network. With few exceptions, the community flows are introduced into the network downstream of one or more of the neighboring community's flow contributions where a meter records the total flow from both communities. In order to determine the downstream community's flow, a differential metering calculation was required. This incremental flow calculation has been performed in a variety of ways in the past with methods employing simplified assumptions or using external hydraulic modeling programs that did not lend themselves to easily generated results. This paper will review how the authors developed a methodology to quickly perform these calculations and provide the system manager with an automated tool for generating communities'flow rates.

Document Type: Research Article


Publication date: January 1, 2007

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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