Download or read book Water Quality of Rooftop Runoff written by Kathy M. DeBusk and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Green Roofs on Roof Runoff Water Quality written by Brett Long and published by . This book was released on 2007 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Roof Runoff Water Quality written by Alameda County Urban Runoff Clean Water Program and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Runoff Water Quality written by Douglas J. Canning and published by . This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rooftop Runoff for Water Supply written by William Oscar Ree and published by . This book was released on 1976 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Analysis for Green Roof Runoff written by Isam Alyaseri and published by . This book was released on 2010 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Storm Water Management for Industrial Activities written by and published by DIANE Publishing. This book was released on 1992 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Water Runoff and Water Quality Control written by John T. Wildrick and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Ecology Water Quality and Climate Change written by Arup K. Sarma and published by Springer. This book was released on 2018-03-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book brings together high-quality research contributions on ecological aspects of urbanization, water quality concerns in an urban environment, and climate change issues with a strong Indian focus under one umbrella. It includes several case studies that discuss urban water management, particularly highlighting the quality aspects. Urbanization is an ecological disturbance that the modern world accepts as essential in the absence of a better alternative that could provide an equal level of comfort. The prohibitive costs of eco-friendly production technologies are forcing the developing world to generate industrial waste that is detrimental to the environment. At the same time, the availability of adequate fresh water is another challenge for our climate-change impacted world. The scientific community is, therefore, searching for ways towards ecologically sustainable urban development. Discussing all these issues, this book offers a useful guide for academicians, researchers, practicing engineers, and managers dealing with diverse water-related problems in urban areas.
Download or read book Runoff Water Quality and Pollutant Mass Loads from Extensive Green Roofs written by Rebecca H. Shopiro and published by . This book was released on 2012 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compares green roof runoff quality with the water quality of precipitation and runoff from a bare shingle roof.
Download or read book A Roof Runoff Strategy and Model for Augmenting Public Water Supply written by Robert Carnahan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is the essential resource that is becoming extremely scarce worldwide. The 21st century will further stress all available water resources through the growth and expansion of developing nations. It is not only the quantity of cheap water that is being depleted, but the quality of these waters is being endangered. Florida is an example where rapid development and an exploding population are competing for shrinking groundwater resources. Current water use does not address the use of alternative supplies and reuses in the United States. The objective of this research was to determine a strategy for augmenting existing water supplies with alternative sources that could be developed economically. Having reviewed numerous alternative sources, it was determined that runoff from roofs potentially provides a source that might meet the augmentation requirement for a small community of a population of 30,000 or less. This research has shown that the quality of water collected from five different roof surfaces meets the drinking water standards and will not degrade the current quality of the main source of water supply. This work not only required the collection of hydrological data from the roof systems, but chemically and biological analyzes samples for contaminants. Since rainfall events vary periodically and in duration, 100,000 meteorological events were analyzed for wind speed, relative humidity, rainfall intensity, and the rainwater runoff across five roofing surfaces to analyze variables that contribute to the effects on the water quality of the source. The model establishes the economics and the public health value of this water. The research assesses the local regulatory aspects of using the water with the outcome of a working objective and rational decision matrix that will permit agencies to select an optimal and safe utilization of the water sources.
Download or read book Water Quality Analysis of Ecoroof Runoff in Portland written by and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland, Oregon is internationally recognized for its implementation of sustainable stormwater management technologies. Ecoroof is one of the sustainable solutions to reduce stormwater runoff which also provides multiple environmental benefits. However, very little is known about the impact of ecoroofs on water quality of roof runoff. Stormwater runoff carries a significant amount of pollutants, which, if it directly enters a stream or river, degrades water quality and severely harms aquatic life. This study evaluates the trends in the long-term water quality data from ecoroofs and conventional roofs in the Portland area. Mann Kendall trend test was used to detect the trends in concentrations of parameters. Concentration levels of metals (copper, lead, zinc) and nutrients (nitrogen and phosphorous) in runoff from ecoroofs were compared with the runoff from conventional roofs using Mann Whitney U test. Results indicated elevated levels of copper and phosphorous in ecoroof runoff. Concentrations of lead and zinc were found to be lower in ecoroof runoff than conventional roof runoff. Monitoring of ecoroof for a longer period is recommended for future studies to quantify the effect of roof age, thickness, and composition of soil media, and plant types on runoff.
Download or read book Water Quality and the First flush Effect in Roof based Rainwater Harvesting written by Jessica Jeanette Lay and published by . This book was released on 2014 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rainwater harvesting (RWH) is a low impact development practice that involves the capture, diversion and storage of rainwater for later use. RWH can help alleviate demands on public water supply systems and promote better conservation practices in the public. Incorporating a first-flush diversion in a RWH system can drastically improve the water quality of harvested rainwater. The objectives of this research were to (1) evaluate the water quality of roof runoff from asphalt shingle, clay tile, metal, and tar and gravel roofs, (2) quantify a first-flush diversion based on a mass removal of pollutants, (3) evaluate a first-flush occurrence in roof runoff based on continuous conductivity measurements throughout a storm event, and (4) perform a pilot-study to determine if soils had potential for long-term accumulation of polycyclic aromatic hydrocarbons (PAHs) when watered with roof runoff that had no first-flush diversion. All runoff samples met "good" and "excellent" Oklahoma irrigation water-quality guidelines for conductivity, sodium adsorption ratio, and boron concentrations. While present, PAH concentrations in runoff samples were observed to be three orders of magnitude below recommended Health Based Screening Levels. An upper-confidence limit was constructed using the binomial probability density function to determine the minimum first-flush diversion required to obtain a 50, 75, 90, and 95% mass removal of total suspended solids and PAHs. Results from the soil pilot study indicated that there is potential for long-term accumulation of PAHs in soils receiving roof runoff that has no first-flush diversion. Approximately 70% of the soil samples that received roof runoff had higher PAH concentrations than the paired soil samples that did not receive roof runoff. Twenty-four to 100% of soil samples were also observed to exceed minimum human-health risk-based screening levels for individual PAH compounds in residential soils. Using harvested rainwater from rooftops to water lawns or irrigate gardens can potentially lead to long-term accumulation of PAHs in the soils when a first-flush diversion is neglected. Therefore, it is recommended that an appropriate first-flush diversion be included in a RWH collection system in order to reduce this potential of accumulation and improve the overall water quality of the harvested rainwater.
Download or read book Green Roof Ecosystems written by Richard K. Sutton and published by Springer. This book was released on 2015-06-04 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date coverage of green (vegetated) roof research, design, and management from an ecosystem perspective. It reviews, explains, and poses questions about monitoring, substrate, living components and the abiotic, biotic and cultural aspects connecting green roofs to the fields of community, landscape and urban ecology. The work contains examples of green roof venues that demonstrate the focus, level of detail, and techniques needed to understand the structure, function, and impact of these novel ecosystems. Representing a seminal compilation of research and technical knowledge about green roof ecology and how functional attributes can be enhanced, it delves to explore the next wave of evolution in green technology and defines potential paths for technological advancement and research.
Download or read book Water Quality Management Planning for Urban Runoff written by and published by . This book was released on 1974 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rooftop Runoff For Water Supply written by United States. Agricultural Research Service and published by . This book was released on 1976 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rooftop Runoff for Water Supply Classic Reprint written by W. O. Ree and published by Forgotten Books. This book was released on 2017-10-28 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Rooftop Runoff for Water Supply A theoretical approach was developed in an attempt to answer the first of the three ques tions. In figure 1 vector P' represents the rainfall; its length is proportional to the rain fall amount passing through a unit area normal to the flow path. The angles p and a are its direction with respect to the horizon and a reference meridian, respectively. A rain gage, with its opening in a horizontal plane, will receive P' sin d units of rainfall. The angle a will not affect the catch. Place a sloping roof in this same rain-flow field and determine the unit rainfall catch of the roof. Let a horizontal element of the roof be the reference meridian. The direction of the horizontal component of the rainfall vector with respect to the meridian is a. The angle of the rainfall vector with respect to a horizontal plane is y}. The slope of the roof is S. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
