Download or read book Changes in ground water quality near two granular iron permeable reactive barriers in a sand and gravel aquifer Cape Cod Massachusetts 1997 2000 written by and published by DIANE Publishing. This book was released on with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in Ground water Quality Near Two Granular iron Permeable Reactive Barriers in a Sand and Gravel Aquifer Cape Cod Massachusetts 1997 2000 written by and published by . This book was released on 2004 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Environmental Analysis written by Chaudhery Mustansar Hussain and published by Royal Society of Chemistry. This book was released on 2016-11-09 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental analysis techniques have advanced due to the use of nanotechnologies in improving the detection sensitivity and miniaturization of the devices in analytical procedures. These allow for developments such as increases in analyte concentration, the removal of interfering species and improvements in the detection limits. Bridging a gap in the literature, this book uniquely brings together state-of-the-art research in the applications of novel nanomaterials to each of the classical components of environmental analysis, namely sample preparation and extraction, separation and identification by spectroscopic techniques. Special attention is paid to those approaches that are considered greener and reduce the cost of the analysis process both in terms of chemicals and time consumption. Advanced undergraduates, graduates and researchers at the forefront of environmental science and engineering will find this book a good source of information. It will also help regulators, decision makers, surveillance agencies and the organizations assessing the impact of pollutants on the environment.
Download or read book Arsenic Research and Global Sustainability written by Prosun Bhattacharya and published by CRC Press. This book was released on 2016-06-08 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Congress "Arsenic in the Environment" offers an international, multi- and interdisciplinary discussion platform for research and innovation aimed towards a holistic solution to the problem posed by the environmental toxin arsenic, with considerable societal impact. The congress has focused on cutting edge and breakthrough research in physical, chemical, toxicological, medical, agricultural and other specific issues on arsenic across a broader environmental realm. The Congress "Arsenic in the Environment" was first organized in Mexico City (As2006) followed by As2008 in Valencia, Spain, As2010 in Tainan, Taiwan, As2012 in Cairns, Australia and As2014 in Buenos Aires, Argentina. The 6th International Congress As2016 was held June 19-23, 2016 in Stockholm, Sweden and was entitled Arsenic Research and Global Sustainability. The Congress addressed the broader context of arsenic research along the following themes: Theme 1: Arsenic in Environmental Matrices and Interactions (Air, Water, Soil and Biological Matrices) Theme 2: Arsenic in Food Chain Theme 3: Arsenic and Health Theme 4: Clean Water Technology for Control of Arsenic Theme 5: Societal issues, Policy Studies, Mitigation and Management Long term exposure to low-to-medium levels of arsenic via contaminated food and drinking water can have a serious impact on human health and globally, more than 100 million people are at risk. Since the end of the 20th century, arsenic in drinking water (mainly groundwater) has emerged as a global health concern. In the past decade, the presence of arsenic in plant foods – especially rice – has gained increasing attention. In the Nordic countries in particular, the use of water-soluble inorganic arsenic chemicals (e.g. chromated copper arsenate, CCA) as wood preservatives and the mining of sulfidic ores have been flagged as health concern. The issue has been accentuated by discoveries of naturally occurring arsenic in groundwater, primarily in the private wells, in parts of the Fennoscandian Shield and in sedimentary formations, with potentially detrimental effects on public health. Sweden has been at the forefront of research on the health effects of arsenic, technological solutions for arsenic removal, and sustainable mitigation measures for developing countries. Hosting this Congress in Sweden was also relevant because historically Sweden has been one of the leading producer of As2O3 and its emission from the smelting industries in northern Sweden and has successfully implemented actions to reduce the industrial emissions of arsenic as well as minimizing the use of materials and products containing arsenic in since 1977. The Congress has gathered professionals involved in different segments of interdisciplinary research in an open forum, and strengthened relations between academia, industry, research laboratories, government agencies and the private sector to share an optimal atmosphere for exchange of knowledge, discoveries and discussions about the problem of arsenic in the environment and catalyze the knowledge generation and innovations at a policy context to achieve the goals for post 2015 Sustainable Development.
Download or read book The relation of ground water quality to housing density Cape Cod Massachusetts written by James H. Persky and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a study of the correlation between housing density and nitrate concentration in groundwater.
Download or read book Permeable Barriers for Groundwater Remediation written by Arun R. Gavaskar and published by . This book was released on 1998 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the limitations of conventional pump-and-treat systems in treating groundwater contaminants, permeable barriers are potentially more cost-effective than pump-and-treat systems for treating dissolved chlorinated solvent plumes, which may persist in the saturated zone for several decades. Other contaminants, such as chromium or other soluble heavy metals, can also be treated with this technology. Permeable Barriers for Groundwater Remediation discusses the types of permeable barriers, their design and construction, and how they can be monitored to evaluate compliance. It provides practical guidance on reactive media selection, treatability testing, hydrogeologic and geochemical modeling, and innovative installation techniques for the evaluation and application of this promising new technology. The types of permeable barriers discussed include: trench-type and caisson-based reactive cells; innovative emplacements, such as horizontal trenching and jetting; and continuous reactive barriers versus funnel-and-gate systems.
Download or read book Detection of Fresh Ground Water and a Contaminant Plume Beneath Red Brook Harbor Cape Cod Massachusetts 2000 written by Timothy D. McCobb and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: ... Study of a landfill plume eminating from the Massachusetts Military Reservation on Cape Cod which flows to Red Brook Harbor in the Cataumet section of the town of Bourne; the study investigated the characteristics of the plume as it journeys along the water table to the harbor; it was also an attempt to determine if fresh groundwater is present at the bottom of the harbor and how far freshwater extends off shore; lastly TCE and PCE levels were studied beneath the harbor to see how far offshore contaminants are present ...
Download or read book Impact of Human Activities on the Quality of Groundwater and Surface Water in the Cape Cod Area written by Karl H. Deubert and published by . This book was released on 1974 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alternatives for Managing the Nation s Complex Contaminated Groundwater Sites written by National Research Council and published by National Academies Press. This book was released on 2013-02-27 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the United States, thousands of hazardous waste sites are contaminated with chemicals that prevent the underlying groundwater from meeting drinking water standards. These include Superfund sites and other facilities that handle and dispose of hazardous waste, active and inactive dry cleaners, and leaking underground storage tanks; many are at federal facilities such as military installations. While many sites have been closed over the past 30 years through cleanup programs run by the U.S. Department of Defense, the U.S. EPA, and other state and federal agencies, the remaining caseload is much more difficult to address because the nature of the contamination and subsurface conditions make it difficult to achieve drinking water standards in the affected groundwater. Alternatives for Managing the Nation's Complex Contaminated Groundwater Sites estimates that at least 126,000 sites across the U.S. still have contaminated groundwater, and their closure is expected to cost at least $110 billion to $127 billion. About 10 percent of these sites are considered "complex," meaning restoration is unlikely to be achieved in the next 50 to 100 years due to technological limitations. At sites where contaminant concentrations have plateaued at levels above cleanup goals despite active efforts, the report recommends evaluating whether the sites should transition to long-term management, where risks would be monitored and harmful exposures prevented, but at reduced costs.
Download or read book Influence of Groundwater Constituents on Longevity of Iron Based Permeable Barriers written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent work has demonstrated the utility of iron permeable reactive barriers (PRBs) for the in situ treatment of chlorinated hydrocarbons. In these systems, the surface of the granular iron acts as an electron donor with the reducible contaminant acting as an electron acceptor, thereby leading to corrosion of the material. Although the exact mechanisms involved have not been fully elucidated, field demonstration indicate that the reactions are rapid under environmentally relevant conditions. At the time of this writing, granular iron PRBs for the degradation of VOCs in groundwater have been installed at over 70 sites, including 53 sites located within the United States. Questions remain, however, concerning the longevity of effective contaminant removal at such installations. From a design standpoint, the long-term success of iron treatment walls is critically dependent on their ability to maintain a reactive surface and appropriate hydraulic residence times (HRTs) for treatment. Deteriorations in the performance of iron-based treatment processes may occur if either the chemical activity of the solid surface diminishes of if the mean hydraulic residence time of the porous medium is reduced. Moreover, changes in the hydraulic residence time distributions (HRTDs) of the porous medium may affect treatment efficiency in a manner that is strongly dependent on the nature of the reaction kinetics. At present, the relationships between the iron surface composition, reaction mechanisms, and reactivity are imperfectly understood. Although some studies have indicated little change over time in iron reactivity for chlorinated hydrocarbons, other investigations have demonstrated that specific groundwater constituents can act over the long term to either diminish or to enhance the reactivity of the iron's interfacial region towards certain species.
Download or read book Groundwater around the World written by Jean Margat and published by CRC Press. This book was released on 2013-03-19 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a unique and up-to-date summary of what is known about groundwater on our planet, from a global perspective and in terms of area-specific factual information. Unlike most textbooks on groundwater, it does not deal with theoretical principles, but rather with the overall picture that emerges as a result of countless observations,
Download or read book Cape Cod Aquifer Management Project Ccamp written by George A. Zoto and published by Forgotten Books. This book was released on 2017-11-07 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Cape Cod Aquifer Management Project (Ccamp): Final Report Cape Cod's groundwater is the sole source of water for domestic and for most commercial and industrial uses. In recognition of this and the need to initiate steps to protect the purity of this fragile resource for future generations, epa officially designated the Cape Cod peninsula as a a Sole Source Aquifer in 1982. Groundwater on Cape God has long been considered a pristine resource in abundant supply but increasing incidents of contamination of public and private-supply wells have been occurring in recent years. The extraordinary development pressure on Cape God has also created additional cause for concern. Barnstable County, synonymous with Cape Cod, has been growing at the fastest rate in New England. Between 1970 and 1980, the population grew 53 percent; another 46 percent increase is expected in the winter population alone from 1980 to the year 2000. In the year 2000, the Cape Cod aquifer will be called on to provide year-round inhabitants with 5 billion gallons of water annually and an additional 3 billion gallons during the summer excluding commercial and other water uses. With this high level of residential growth, will come significant commercial and industrial development. The peninsula's sandy, permeable soil and generally shallow depth to the water table make its groundwater particularly vulnerable to contami nation. Further, as shown in Figure there was concern that many of the groundwater-supply areas (or zones of contribution) which provide water for the public-supply wells, were threatened from contamination from the sanitary landfills, hazardous-waste sites, and waste-water treatment plants located within these zones. The combination of this vulnerable groundwater resource and extreme growth made the development of a comprehensive protection program urgent. 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.
Download or read book Hydrogeophysics written by Yorum Rubin and published by Springer Science & Business Media. This book was released on 2006-05-06 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ground-breaking work is the first to cover the fundamentals of hydrogeophysics from both the hydrogeological and geophysical perspectives. Authored by leading experts and expert groups, the book starts out by explaining the fundamentals of hydrological characterization, with focus on hydrological data acquisition and measurement analysis as well as geostatistical approaches. The fundamentals of geophysical characterization are then at length, including the geophysical techniques that are often used for hydrogeological characterization. Unlike other books, the geophysical methods and petrophysical discussions presented here emphasize the theory, assumptions, approaches, and interpretations that are particularly important for hydrogeological applications. A series of hydrogeophysical case studies illustrate hydrogeophysical approaches for mapping hydrological units, estimation of hydrogeological parameters, and monitoring of hydrogeological processes. Finally, the book concludes with hydrogeophysical frontiers, i.e. on emerging technologies and stochastic hydrogeophysical inversion approaches.
Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.
Download or read book Water Quality for Ecosystem and Human Health written by Geneviève M. Carr and published by UNEP/Earthprint. This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is intended to provide an overview of the major components of surface and ground water quality and how these relate to ecosystem and human health. Local, regional and global assessments of water quality monitoring data are used to illustrate key features of aquatic environments, and to demonstrate how human activities on the landscape can influence water quality in both positive and negative ways. Clear and concise background knowledge on water quality can serve to support other water assessments.
Download or read book Riverbank Filtration written by C. Ray and published by Springer Science & Business Media. This book was released on 2006-03-01 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chittaranjan Ray, Ph. D. , P. E. University of Hawaii at Mãnoa Honolulu, Hawaii, United States Jürgen Schubert, M. Sc. Stadtwerke Düsseldorf AG Düsseldorf, Germany Ronald B. Linsky National Water Research Institute Fountain Valley, California, United States Gina Melin National Water Research Institute Fountain Valley, California, United States 1. What is Riverbank Filtration? The purpose ofthis book is to show that riverbank filtration (RBF) isa low-cost and efficient alternative water treatment for drinking-water applications. There are two immediate benefits to the increased use of RBF: Minimized need for adding chemicals like disinfectants and coagulants to surface water to control pathogens. Decreased costs to the community without increased risk to human health. Butwhat,exactly, isRBF? In humid regions, river water naturally percolates through the ground into aquifers (which are layers of sand and gravel that contain water underground) during high-flow conditions. In arid regions, most rivers lose flow, and the percolating water passes through soil and aquifer material until it reaches the water table. During these percolation processes, potential contaminants present in river water are filtered and attenuated. If there are no other contaminants present in the aquifer or ifthe respective contaminants are present at lower concentrations, the quality of water in the aquifer can be ofhigher quality than that found in theriver. In RBF, production wells — which are placed near the banks ofrivers —pump large quantities ofwater.
Download or read book Recent Progress in Slow Sand and Alternative Biofiltration Processes written by Rolf Gimbel and published by IWA Publishing. This book was released on 2006-03-31 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slow sand filtration is typically cited as being the first "engineered" process in drinking-water treatment. Proven modifications to the conventional slow sand filtration process, the awareness of induced biological activity in riverbank filtration systems, and the growth of oxidant-induced biological removals in more rapid-rate filters (e.g. biological activated carbon) demonstrate the renaissance of biofiltration as a treatment process that remains viable for both small, rural communities and major cities. Biofiltration is expected to become even more common in the future as efforts intensify to decrease the presence of disease-causing microorganisms and disinfection by-products in drinking water, to minimize microbial regrowth potential in distribution systems, and where operator skill levels are emphasized. Recent Progress in Slow Sand and Alternative Biofiltration Processes provides a state-of-the-art assessment on a variety of biofiltration systems from studies conducted around the world. The authors collectively represent a perspective from 23 countries and include academics, biofiltration system users, designers, and manufacturers. It provides an up-to-date perspective on the physical, chemical, biological, and operational factors affecting the performance of slow sand filtration (SSF), riverbank filtration (RBF), soil-aquifer treatment (SAT), and biological activated carbon (BAC) processes. The main themes are: comparable overviews of biofiltration systems; slow sand filtration process behavior, treatment performance and process developments; and alternative biofiltration process behaviors, treatment performances, and process developments.