Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 58 for “"Combined sewer"”.
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The performance of certain combined sewer overflows with storage
… technique for the reduction of pollution from combined sewer systems. Field data were gathered at three combined sewer overflow sites during dry weather and a wide range of high flow events. The overflows incorporated off-line storage which at two sites took the form of rectangular partitioned …
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The movement of cohesive sediment in a large combined sewer
The presence of sediment deposits within sewerage systems may lead to operational (premature surcharging and surface flooding) and potential environmental problems (sediments act as a store of pollutants which can be released during erosion events). The consequences of allowing these problems to …
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Flow routing in the parallel pipes of a combined sewer system
… and successfully applied to a twin pipe sewer system. The model predicts flow and level for each of the parallel pipes and deals with the complex behaviour which occurs at cross-connections.<br/><br/>The model DUPPERS is an enhancement of the single pipe simulation model DUCTS developed …
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Solving Boston Harbor's combined sewer overflow problem : is there room for innovation?
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1988.
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Development of a transitioning approach to reduce surface water volumes in combined sewer systems
… implication of removing surface water in combined sewer systems is examined in three main components. Firstly the costs of electricity incurred at the single sewage pumping station (SPS) investigated during the various scenarios modelled require to be addressed. Secondly the costs to …
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Urban drainage modeling and evolutionary multiobjective optimization for combined sewer overflows prediction and control
… and river water quality degradation due to combined sewer over flows (CSOs) are prevailing problems in urban areas worldwide. In this study we have developed an integrated hydrologic-hydraulic and water quality modeling framework coupled with an evolutionary multiobjective optimization …
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Hydraulic modeling and evolutionary optimization for enhanced real-time decision support of combined sewer overflows
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Seth Robbins (robbins.sd@gmail.com) on 2014-01-16T18:19:40Z Item is restricted until 2016-01-16T18:19:34Z
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Re-Think the Streets: An Evaluation of Green Street Practices as a Method to Achieve Combined Sewer Separation
… applications (i.e., “Green Streets”) to reduce combined sewer dependency and provide an alternative solution to sewer separation. Typically, roadways reach the end of their design life after 40 years, at which point, they are fully reconstructed. Reconstruction provides an opportunity to …
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Impact of combined sewer overflows on hydrodynamics and sediment transport during flow reversal events in Chicago area waterway system
The student, Chieh Ying Chen, submitted this Thesis for approval on 2018-04-18 at 15:28.
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The use of a water quality model to evaluate the impacts of combined sewer overflows on the lower Hudson River
CSO discharges have long been recognized as a significant source of water pollution. While many sources of water pollution have been controlled over the past 20 years, CSOs continue to be a main environmental concern in several areas, especially in old cities. In the past, most CSO research focused …
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Optimal management and operational control of urban sewer systems
Combined sewer networks control, like many other real world problems, is usually identified with competing and conflicting objectives. Decision makers have a great need of selecting the best possible control strategy in minimizing the combined sewer overflows (CSOs) when controlling the sewer …
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A computer vision approach for sewer overflow monitoring
Combined Sewer Systems (CSS) exist in over 700 communities across the United States. Under extreme wet conditions, excess inflow which is beyond the capacity of CSS results in Combined Sewer Overflows (CSOs); the consequence being direct discharge of untreated water into the environment. Current …
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Restoring the Lost Rivers of Washington: Can a city's hydrologic past inform its future?
… and aging infrastructure. The city's combined sewer and stormwater system dumps millions of gallons of raw sewage into the Anacostia and Potomac Rivers over 70 times annually during significant rain events. While many groups, both public and private, attempt to clean the river, …
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Characterization of Flow Turbulence Induced by a Bubble-Plume in Large-Scale Experiments
… bubble-plume systems used in the design of the combined-sewer-overflow reservoirs.
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Treatment of overflows from combined sewers
… impairment due to concentrated urban growth is combined sewer overflow...
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Watershed-level Analysis of Urban Raingarden Performance
… four flow meters to monitor the flow rate in the combined sewer. This analysis examines the watershed-level runoff response from the rain garden installation.
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Transitioning to Sustainable Civil Infrastructure Systems: Green Stormwater Management and Engineering Design Thinking
… for stormwater management, particularly for combined sewer overflow mitigation. Viewing green infrastructure program adoption in combined sewer communities as a policy innovation, I develop an empirical model to differentiate factors associated with a sewer management authority’s binary …
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The Impact of Rochester Storm Sewers on the Water Quality of the Lower Genesee River: A Modeling Approach Using PCSWMM
… due to industrial and municipal sources, storm sewers, and urban runoff. In urban areas, nonpoint source pollution from stormwater runoff is known to be a dominant factor in water quality. An assessment of the lower Genesee River was initiated to determine impacts from the canal, storm sewers, …
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