MANAGING WET WEATHER FLOWS USING REAL TIME CONTROLS FOR THE WASHINGTON, D.C. COMBINED SEWER SYSTEM
A hydraulic model has been developed for the District of Columbia combined sewer system as part of a long-term control plan (LTCP). It is a fully dynamic model and can be used to develop real time rule-based strategies. In addition to other capital alternatives such as storage basins and tunnels, the model has been applied to evaluate existing and potential improvements of real time controls (RTC) for the sewer system. The combined system encompasses about 12,955 acres and includes many complex structures including more than a hundred regulators, eight major pump stations, and a swirl concentrator. In the past, real time control strategies were implemented by constructing inflatable dams at several locations within the system. The dams provide retention of wet weather flows through in-system storage, and help capture first flush pollutant loads by maximizing flow to the pump stations. The model can simulate all the current settings of the inflatable dams and gates, and is capable of simulating many other real time control strategies, including a dam reacting to a distant system variable such as flow and/or water level, and a pump discharging depending on the flow at a single or multiple locations or position of a gate. The model was used to evaluate effectiveness of past controls in reducing combined sewer overflows. The results indicate significant reductions in overflows from some sewersheds because of the dams.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Research Article
Publication date: 2001-01-01
More about this publication?
- 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 These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites