Global ETD Search
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Showing 1 to 19 of 19 for “"Stormwater Treatment"”.
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Floating wetlands for urban stormwater treatment
A floating treatment wetland (FTW) is an ecological approach which seeks to reduce point and nonpoint source pollution by installing substrate rooted plants grown on floating mats in open waters. While relatively novel, FTW use is increasing. A review of literature identified several research gaps, …
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Stormwater Treatment by Two Retrofit Infiltration Practices
… Tech designed and constructed two innovative stormwater best management practices (BMPs). The goal of this project was to evaluate the effectiveness of a bioretention cell and a CU-Structural Soil™ infiltration trench. BMP construction was completed in July 2007. Twenty-nine precipitation …
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Optimization of BMP Selection for Distributed Stormwater Treatment Networks
Current site scale stormwater management designs typically include multiple distributed stormwater best management practices (BMPs), necessary to meet regulatory objectives for nutrient removal and groundwater recharge. Selection of the appropriate BMPs for a particular site requires consideration …
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Evaluation Of Proprietary Stormwater Treatment Devices In Field And Laboratory Conditions
Proper stormwater management acknowledges both water quantity and water quality. Historically, stormwater quantity and quality have been separately considered; runoff was routed as quickly as possible into the nearest body of water. Although this alleviates potential flooding concerns, water …
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Performance Evaluation of a Low Impact Development Retrofit for Urban Stormwater Treatment
… removal and hydrologic performance. The treatment train included four in-line grass swales followed by a bioretention cell with a gravel base. The facility retained 85% of the rainfall. Influent and effluent pollutant loads were calculated using three common substitution methods for …
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Evaluation on an on-site stormwater treatment device for sediment flux mitigation in the Lake Tahoe basin
… was to evaluate the performance of an on-site stormwater treatment device in removing sediment from simulated stormwater runoff. The sediment trapping device consists of removable, porous 200-micron nylon inserts for filtration and is designed to mitigate premature clogging infiltrative runoff …
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Stormwater treatment during infiltration and its effect on shallow urban groundwater quality in the Cape Flats Aquifer: field study and soil-column experiments
… a commitment to become a water sensitive city. Stormwater harvesting and recharge of the Cape Flats Aquifer are steps toward both commitments. This study formed part of a larger transdisciplinary research project where a stormwater detention pond in Mitchell's Plain, Cape Town was retrofitted …
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The Effectiveness Of A Specifically Designed Green Roof Stormwater Treatment System Irrigated With Recycled Stormwater Runoff to Achieve Pollutant Removal and Stormwater Volume Reduction
… threats to surface-water quality is polluted stormwater runoff. In this research, investigated is the use of a green roof irrigated with recycled stormwater runoff to remove pollutants from stormwater runoff and reduce the volume of stormwater runoff leaving developed areas. The green roof …
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Advanced Biofilm and Aerobic Granulation Technologies for Water and Wastewater Treatment
… biofilms have been broadly applied in wastewater treatment, its potential for potable reuse or stormwater treatment has not been well studied. The treatment trains of pre-ozonation followed by biologically active filtration (ozone- BAF) is an advanced biofilm technology for potable reuse that can …
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Understanding the role of aquatic plants in stormwater management pond performance in Oshawa, Ontario, Canada
Stormwater Management Ponds (SMPs) are engineered to receive, store, and treat stormwater runoff before it enters receiving waters in urbanizing landscapes. While these systems are not considered natural, they are typically colonized by aquatic plants. Although submergent and emergent vegetation is …
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Urban Landscape Management Practices as Tools for Stormwater Mitigation by Trees and Soils
… be used for constructing urban infrastructure, stormwater treatment costs and environmental damage from untreated stormwater will rise. Well designed urban landscapes can employ trees and soils to reduce stormwater runoff flowing to streams and treatment facilities. Typical urban soil, however, …
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Development of unsaturated flow functions for low impact development stormwater management systems filter media and flow routines for hydrological modeling of permeable pavement systems
<p>Low Impact Development - Stormwater Management (LID-SWM) systems are relatively new technologies that were developed in order to meet the water quality criteria imposed by the Clean Water Act. LID-SWM is also used to replicate the natural hydrology of developed sites. However, the hydrological …
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Regulatory and Economic Consequences of Empirical Uncertainty for Urban Stormwater Management
… mitigation of the ecological effects of urban stormwater runoff has been delegated to local government authorities through the Clean Water Act's National Pollutant Discharge Elimination Systems' Stormwater (NPDES SW), and Total Maximum Daily Load (TMDL) programs. These programs require that …
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Scaling Nature-based Solutions in Urban Areas: Assessment Methods and Insights for Planning and Design
… of specific NbS at the local scale for urban stormwater management, considered a determinant issue for ensuring the adaptability and efficiency of scaled-out NbS. A review of the scientific literature identified a broad set of design variables, related impacts on runoff mitigation and …
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Infiltration Models for Engineered Media in Living Roofs and Bioretention
… bioretention plays a crucial role in determining stormwater treatment performance and sustaining plant growth. This research focuses on (1) the hydraulic properties and pore size distributions of engineered media with varying aggregates, compost ratios, and amendments, and (2) the application of …
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A Bayesian stormwater quality model and its application to water quality monitoring
<p>Stormwater runoff is a topic of research that over the years has increasingly grown due to its impact on our water resources. Treatment systems have been developed to mitigate this impact by preserving the pre-development hydrologic and water quality characteristics of the drainage areas. …
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A framework for designing and optimizing green infrastructure network under uncertainty
… (GI) is becoming a common solution to mitigate stormwater-related problems. Despite wide acknowledgement of GI benefits, there is a lack of decision support tools that allow practitioners to interactively identify and evaluate the performance of small GI practices using hydrologic models under …
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An Assessment of Sustainable Water Management at University Campuses
… beyond the campus. The Radford University Stormwater Treatment Wetland Project case illustrated the potential for institutions with limited space and resources to establish effective outdoor teaching laboratories using environmental features already present or in development on campus. …
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Functional Characterization of Green Sorption Media and Scaling of Pilot Studies for Copper Removal in Stormwater Runoff
… and recycled materials can be applied as a stormwater best management practice for copper removal. A green adsorption media mixture composed of recycled tire chunk, expanded clay aggregate, and coconut coir was physicochemically evaluated for its potential use in an upflow media filter. The …