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 19 of 19 for “"Combined Sewer Overflow"”.
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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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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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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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Hydraulic modelling of Chicago Area Waterways System (CAWS) to assess the impact of hydrologic separation on water levels and potential flooding during extreme rainfall events in Chicago, Illinois
… 100-year storm event observed in September 2008. Combined Sewer Overflow hydrographs at +150 locations were estimated using the CityModel (InfoWorks). Historic conditions were defined by setting historic operation of gates and locks at controlling structures at Lakefront and Lockport. Also …
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Computer-based decision-support methods for hydrological ecosystem services management
… GSI designs are identified that reduce combined sewer overflow volumes in an urban setting while maximizing the net benefit across social, economic, and environmental categories. Overall, this dissertation research provides useful and relevant computer-based tools for water resources …
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Choosing green over gray : Philadelphia's innovative stormwater infrastructure plan
… capitalized on a regulatory policy window, the Combined Sewer Overflow Long Term Control Plan Update, that garnered momentum from the city's decision to "re-brand" itself as a green city and galvanized support for the $1.6 billion plan for green infrastructure across the city. These conclusions …
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The performance of certain combined sewer overflows with storage
The provision of storage at overflows is a commonly used 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 …
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Sustainable cities and institutional change : the transformation of urban stormwater management
… pipes to control polluted urban runoff and sewer overflows, as required under the Clean Water Act. Yet the extent to which cities facing very similar municipal pollution problems adopt GSI varies widely. This dissertation seeks to account for the disparate adoption of, and investment in, …
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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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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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Water quality and quantity response from implementation of low impact development in the Racine Avenue Pumping Station service area
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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In situ characterization of sediment oxygen demand across the spectrum of non-resuspension to full resuspension with varying bed shear stress
… of very high flow rates associated with pumped combined sewer overflow (CSO) during intense hydrologic events. These events can cause resuspension of the highly organic, nutrient-rich bottom sediments, resulting in precipitous drawdown of dissolved oxygen (DO) in the water column. While many …
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HSPF modeling of the Charles River Watershed
… Postulated dry weather sources include illegal sewer connections and wastewater treatment plant discharge. Additional sources occurring during wet weather include washoff of animal feces from the watershed, combined sewer overflow discharge, increased contributions from illegal connections, and …
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Embodied Virtual Reality: The Impacts of Human-Nature Connection During Engineering Design
… study was about a federal mandate to minimize combined sewer overflow in a neighborhood within Cincinnati, OH. Following the plan review, VR groups were given a VR walkthrough or flythrough of the case study area of interest as a selected avatar (embodied:bird, self-lens:oneself). Participants …
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Assessment of integrated green infrastructure-based stormwater controls in small to large scale developed urban watersheds
… discharges to water bodies, and decreased combined sewer overflow events. The main objective of this dissertation research was to examine the benefits of individual and integrated GI stormwater control practices at small to large scales in urban watersheds. The hypothesis of this research …
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The characterisation of the hydrodynamic vortex separator using residence time distribution analysis.
… at wastewater treatment works and in the sewerage system as a combined sewer overflow (CSO) for the separation of solids from an incoming waste stream. This project presents the first stage in developing and aiding the existing design methodology for the optimisation of kinetic processes …
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Dissolved Organic Matter Characterization and Impact on Mercury Binding in an Urbanizing Watershed
<p>Dissolved organic matter (DOM) is ubiquitous in aquatic ecosystems, interacting with and controlling the bioavailability and transport of mercury (Hg) and other trace metals through complexation. The complexation of ionic Hg (Hg<sup>2+</sup>) with DOM can either limit methyl mercury (MeHg) …
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Long-term impacts of water quality and climate variability on Illinois River waterway fish assemblages
The Illinois River has been heavily altered by a range of human activities. Among these, wetlands have been drained, lock and dams constructed, navigation channels maintained, and industrial effluent and sewage discharged. These alterations have strongly affected fish assemblages within the river. …