Journal article
Diverting 4400 MGD into a Deep CSO Tunnel: Forest Park Intake Design
Proceedings of the Water Environment Federation, Vol.2017(15), pp.502-518
01/01/2017
DOI: 10.2175/193864717822153210
Abstract
The Metropolitan St. Louis Sewer District's Forest Park intake located at the upstream end of a 14.5 km (9 mile) long, 9.1 m (30 foot) diameter CSO Tunnel will have to divert a peak flow of 16,731 ML/d (4420 MGD) into the deep tunnel. This large and complex tangential vortex-flow intake includes a large deaeration chamber. Computational Fluid Dynamics (CFD) modeling was initially undertaken to verify that the proposed intake configuration would convey the peak design flow without causing an overflow downstream. A 1:16 scale physical model of the intake was constructed and tested to confirm CFD results. The physical model identified hydraulic performance issues with the initial dimensions of the deaeration chamber and concluded that a larger chamber was necessary to achieve satisfactory performance. The ratio between the dropshaft diameter and deaeration chamber diameter is an important design consideration and should not be less than 1:1.75, and preferably 1:2.
Details
- Title: Subtitle
- Diverting 4400 MGD into a Deep CSO Tunnel: Forest Park Intake Design
- Creators
- W KlecanP Pride - Milwaukee Metropolitan Sewerage DistrictJ HallstenA Craig - University of IowaT Lyons - University of IowaA Kharazi
- Resource Type
- Journal article
- Publication Details
- Proceedings of the Water Environment Federation, Vol.2017(15), pp.502-518
- DOI
- 10.2175/193864717822153210
- ISSN
- 1938-6478
- Language
- English
- Date published
- 01/01/2017
- Academic Unit
- IIHR--Hydroscience and Engineering
- Record Identifier
- 9984627197402771
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