Download or read book Microorganisms in Urban Stormwater written by Vincent P. Olivieri and published by . This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microorganisms in Urban Stormwater written by and published by . This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microorganisms in Urban Stormwater written by and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Workshop on Microorganisms in Urban Stormwater Edison New Jersey March 24 1975 written by Richard Field and published by . This book was released on 1979 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microorganisms in Urban Stormwater written by U. S. Environmental Protection Agency and published by BiblioGov. This book was released on 2013-07 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Download or read book PROCEEDINGS WORKSHOP ON MICROORGANISMS IN URBAN STORMWATER MUNICIPAL ENVIRONMENTAL RESEARCH LABORATORY U S ENVIRONMENTAL PROTECTION AGENCY written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microorganisms in Urban Stormwater written by Vincent P. Olivieri and published by . This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling Microorganisms in Urban Stormwater written by David T. McCarthy and published by . This book was released on 2008 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Workshop on Microorganisms in Urban Stormwater written by Richard Field and published by . This book was released on 1976 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Stormwater Runoff Based on Microbial Source Tracking Methods written by Gaspar Teixeira de Queiroz and published by LAP Lambert Academic Publishing. This book was released on 2015-09-03 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies acknowledge the impact that stormwater has in receiving waters, often as great as wastewater, in urban contexts. Despite being widely studied, modelling of urban stormwater runoff has proven a challenge due to relevant spatial and temporal variability, and a short understanding of the build-up processes of diffuse source pollutants in dry weather. Current water quality evaluation is based on the level of faecal contamination, through faecal indicator bacteria, such as E. coli and enterococci. As pollution mitigation measures are currently converging towards treat-at-source solutions, it seems urgent to pinpoint the source of the detected faecal pollution in urban environments. Microbial source tracking methods are promising tools in finding the source of any contamination, but despite their fast development and numerous applications, they haven't yet been used to track faecal pollution in urban stormwater runoff. This study presents a viable tracking of three species - Humans, Cats and Dogs - through mitochondrial DNA markers, in collected samples, correlated with a strong degree of faecal pollution, highlighting the need for treatment at WWTPs prior to discharge.
Download or read book Proceedings of Workshop on Microorganisms in Urban Stormwater written by United States. Environmental Protection Agency and published by . This book was released on 1977 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Stormwater Management in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-03-17 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.
Download or read book Microbial Risk Assessment of Sustainable Urban Stormwater Management Practices written by Keah-Ying Lim and published by . This book was released on 2016 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Urban Water Management (SUWM), a new approach to manage stormwater as a water resource instead of nuisance, has the potential to supplement the diminishing traditional water supplies as well as reducing surface water pollution from storm runoff. Uncertainties of public health risks represent one of the main barriers for the smooth transition to SUWM approach as urban stormwater is known to be highly variable in water quality and is less studied than the conventional water supplies. My research is aimed at improving our state-of-knowledge for the public health risks associated with the SUWM practices. Using the Quantitative Microbial Risk Assessment (QMRA) framework as my main research tool, I investigated the risk implications of three SUWM scenarios: 1) rainwater harvesting, 2) stormwater harvesting, and 3) discharging stormwater into recreational water. As household-level rainwater harvesting is the most readily implementable SUWM approach, I first investigated the public health risks associated with using the rooftop harvested rainwater for household produce irrigation---a reasonable scenario considering the relatively clean water quality of rainwater. My result showed that the risk associated with consuming produce irrigated by harvested rainwater exceeded the EPA's benchmark for safe drinking water, but is still at least ten-fold lower than when reclaimed water is used for the same purpose. To investigate the risks associated with capturing, treating, and reusing urban stormwater collected from urban developments, I examined three non-potable household applications: 1) toilet-flushing, 2) showering, and 3) foodcrop irrigation. My results showed that harvested stormwater is only safe for toilet-flushing under the circumstances considered. However, interpretations of the risks also differ depending on the risk benchmark used for comparison. In my final case study, I adopted a new contamination source apportionment QMRA method to investigate the recreational health risks associated with discharging stormwater into a popular recreational beach. My results showed that sewage contamination of urban stormwater is the governing factor for elevated risks in the water. However, the risk levels are within the acceptable risk set by the U.S. EPA in most of the cases in spite of the violation of water quality standard due to contribution of fecal bacteria from non-human sources. The overall finding of my research demonstrated that the QMRA is a powerful tool to provide a scientific basis for SUWM decisions. The risk outcomes can be used to set the appropriate public health risk management guidelines and water legislation that are necessary for the progress of SUWM practices.
Download or read book Sustainable Surface Water Management written by Susanne M. Charlesworth and published by John Wiley & Sons. This book was released on 2016-11-14 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Surface Water Management: a handbook for SUDS addresses issues as diverse as flooding, water quality, amenity and biodiversity but also mitigation of, and adaptation to, global climate change, human health benefits and reduction in energy use. Chapters are included to cover issues from around the world, but they also address particular designs associated with the implementation of SUDS in tropical areas, problems with retrofitting SUDS devices, SUDS modelling, water harvesting in drought-stricken countries using SUDS and the inclusion of SUDS in the climate change strategies of such cities as Tokyo, New York and Strasbourg.
Download or read book Investigating the Effects of Variable Water Chemistry on Bacterial Transport During Stormwater Infiltration written by Haibo Zhang and published by . This book was released on 2013 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogenic microorganisms and heavy metals have frequently been detected in urban stormwater runoff. Pathogens transport to the groundwater table with the infiltrating water and cause groundwater contamination. A variety of physical, chemical and biological factors have been studied for their effects on bacterial transport. However, the effect of heavy metals has largely been ignored, despite the elevated concentrations common in stormwater runoff. This work examines changes in bacterial and soil surfaces using scanning electron microscopy and energy dispersive X-ray spectroscopy after exposure to synthetic stormwater amended with heavy metals. Sets of batch bacterial sorption experiments were conducted under different conditions by varying heavy metal concentrations in synthetic stormwater and soil exposure history. The results indicate that the presence of heavy metals increases bacterial attachment to soil surfaces. Modeling bacterial transport during stormwater infiltration is challenging due to the variability and complexity of the physical, chemical and biological interactions in the soil-water-bacteria system. This work quantified changes in bacterial attachment under variable solution chemistry using a newly combined rate equation, which varies temporally and spatially with changes in solution chemistry. The relative importance of physiochemical variation on the estimation of bacterial attachment was quantitatively described using two-phase Monte Carlo analysis. A semi-reactive microbial transport model was further developed in HP1 (HYDRUS1D-PHREEQC) with the incorporation of the newly combined rate equation. The model matched observed bacterial breakthrough curves in laboratory column experiments well. This method represents one step towards a more realistic model of bacterial transport in complex microbial-water-soil systems. The developed model was further applied to the investigation of bacterial removal in field bioretention systems. The influent and effluent water samples from bioretention systems in New York City were sampled and analyzed over the summer of 2012 for fecal indicator Escherichia coli. Reduction of the effluent bacterial concentrations was observed and the removal efficiency was up to 66%. The antecedent dry period was found to affect bacterial removal. Shorter antecedent dry period results in higher soil moisture which is favorable for bacteria in soil to persist. The semi-reactive microbial transport model was applied and the modeled bacterial removal efficiency agrees well with observed values with a slight overestimation. This is primarily due to the presence of preferential flow paths in the field bioretention systems, which are not considered in the model.
Download or read book Wetland Systems to Control Urban Runoff written by M. Scholz and published by Elsevier. This book was released on 2006-09-29 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetland Systems to Control Urban Runoff integrates natural and constructed wetlands, and sustainable drainage techniques into traditional water and wastewater systems used to treat surface runoff and associated diffuse pollution. The first part of the text introduces the fundamentals of water quality management, and water and wastewater treatment. The remaining focus of the text is on reviewing treatment technologies, disinfection issues, sludge treatment and disposal options, and current case studies related to constructed wetlands applied for runoff and diffuse pollution treatment. Professionals and students will be interested in the detailed design, operation, management, process control and water quality monitoring and applied modeling issues.* Contains a comprehensive collection of timely, novel and innovative research case studies in the area of wetland systems applied for the treatment of urban runoff * Demonstrates to practitioners how natural and constructed wetland systems can be integrated into traditional wastewater systems, which are predominantly applied for the treatment of surface runoff and diffuse pollution * Assesses the design, operation, management and water treatment performance of sustainable urban drainage systems including constructed wetlands
Download or read book Grays Harbor Fecal Coliform Bacteria Monitoring to Characterize Water Quality in Urban Stormwater Drains written by Betsy Dickes and published by . This book was released on 2011 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
