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| Decentralized stormwater controls provide a significant and promising alternative strategy to limit the number of overflows from combined sewer systems. This research evaluates the functional processes employed by decentralized controls and possible methods of quantifying stormwater retention and detention mechanisms. Pilot installations and modeling are demonstrating significant reductions in runoff volumes especially when targeted at problematic catchment areas of the collection system. The technical considerations and perceived impediments of urban retrofits are analyzed and a methodology for modeling effectiveness is outlined. The comprehensive benefits gained from decentralized controls, in addition to stormwater volume reductions, are also presented. The results of this research provide a framework for communities to begin implementing decentralized controls as a component of a combined sewer inflow reduction program. Analytical assessments of categorical controls are provided to aid in the selection of appropriate decentralized techniques and strategies. This report is available only as a pay-per-view item. |
Decentralized Stormwater Controls for Urban Retrofit and Combined Sewer Overflow Reduction, Phase 2
Phase 1 of this project demonstrated the technical feasibility of using decentralized stormwater controls in urban areas for retrofits and controlling combined sewer overflows. This technical...
Tools for Evaluating the Benefits of Green Infrastructure for Urban Water Management
Available as eBook only.
Communities are increasingly looking to green infrastructure as a means of meeting not only stormwater management objectives but multiple...
21st Century Water Municipal Issues and Concerns: Literature Review
Ten years into the 21st Century, municipal and county leaders are facing significant water challenges, including: high water use rates, population growth, aging infrastructure, and the impact of...
Application and Optimization of the Galvano-Coagulator Process To Heavy Metal Waste Streams
The galvano-coagulator is a technology developed in the former Soviet Union in the 1980s. The major feature of the technology is that it appears to be an effective process in hexavalent chromium...
Research Digest - Infiltration vs. Surface Water Discharge: Guidance for Stormwater Managers
Urban stormwater runoff contributes to the degradation of receiving surface waters and groundwater. This degradation is caused both by the increased flows that result from urbanization (i.e., the...
An Evaluation of the Functions and Effectiveness of Urban Riparian Forest Buffers
This project was undertaken to evaluate the effectiveness of urban riparian forest buffers for a number of potential functions. States and local jurisdictions are increasingly requiring riparian...
The Effect of Wet Weather Driven Dissolved Oxygen Sags on Fishes in Urban Systems
Available as eBook only
Waters in urbanized areas often experience hypoxic events due to combined sewer overflows and urban runoff. Low...
Flare Efficiency Estimator and Case Studies
A flare efficiency estimator (FEE) tool is part of Water Environment Research Foundation (WERF) project U2R08 entitled Methane Evolution from Wastewater Treatment and Conveyance under WERF’s...
Energy Efficiency in Wastewater Treatment in North America: A Compendium of Best Practices and Case Studies of Novel Approaches
After manpower, energy is the highest operating cost item for most the wastewater utilities. Over the last decade, the implementation of new technologies to meet new effluent limits and water...
An Examination of Innovative Methods Used in the Inspection of Wastewater Collection Systems (CD)
This report brings together a body of information on the characteristics of the wastewater pipe network and the most common defects encountered. The technologies and methods in use by utilities to...
Remaining Asset Life: A State of the Art Review
This report is an output of the fourth research track (Track 4) of WERF’s strategic asset management research program ‘Asset Management Communication and Implementation’ (SAM1R06). Track 4...