Download or read book A Review of Literature on the Removal of Inorganic Contaminants from Drinking Water written by L. E. Liem and published by . This book was released on 1996 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a literature review of the current state of knowledge in the area of inorganic chemical removal from drinking water. The review considers inorganic chemical parameters that include arsenic, barium, boron, cadmium, chloride, chromium, copper, cyanide, fluoride, iron, lead, manganese, mercury, nitrate, selenium, sodium, sulphide, total dissolved solids, uranium, and zinc. Sources of inorganic chemicals include industrial and municipal effluent, agricultural runoff, and natural sources. Both conventional and advance treatment processes are noted to give an idea of how each contaminant could be removed. These processes include coagulation, softening, filtration, oxidation, adsorption, ion exchange, distillation, membrane processes, aeration, and dilution.
Download or read book A Review of Literature on the Removal of Organic Chemicals from Drinking Water written by Nicholas J. Oke and published by . This book was released on 1996 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the literature concerning the current state of knowledge of removing organic chemicals from drinking water. Such chemicals may include humic substances produced by degradation of plant and animal matter, contaminated leachate from landfills and lagoons, agricultural runoff, and accidental and illegal dumping of chemicals. Treatment techniques reviewed include coagulation, softening, sedimentation, filtration, chlorination, adsorption on activated carbon or resins, air stripping, reverse osmosis, and the use of oxidants or ultraviolet radiation.
Download or read book A Review of Literature on the Removal of Microbial Contaminants from Drinking Water written by Hongde Zhou and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the various water treatment technologies available to remove micro-organisms from raw water supplies. Discussions of each technology includes a process overview, performance information, design considerations, operating and maintenance aspects, and notes on costs and status of technology development. In addition, the impacts of important micro-organisms and relevant regulations are examined to highlight the significance and requirements of removing micro-organisms from water treatment processes. Specific consideration is made regarding those technologies suitable for small community systems located in the Northern River Basins Study area. Types of technologies examined include pre-filtration processes such as coagulation and sedimentation, filtration, and disinfection. Three types of package plants (conventional, tube-type clarification, and adsorption clarifier) suitable for small communities are also reviewed.
Download or read book Manual of Treatment Techniques for Meeting the Interim Primary Drinking Water Regulations written by Municipal Environmental Research Laboratory. Water Supply Research Division and published by . This book was released on 1978 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionic Liquids written by Alexander Kokorin and published by BoD – Books on Demand. This book was released on 2011-02-21 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the second in the series of publications in this field by this publisher, and contains a number of latest research developments on ionic liquids (ILs). This promising new area has received a lot of attention during the last 20 years. Readers will find 30 chapters collected in 6 sections on recent applications of ILs in polymer sciences, material chemistry, catalysis, nanotechnology, biotechnology and electrochemical applications. The authors of each chapter are scientists and technologists from different countries with strong expertise in their respective fields. You will be able to perceive a trend analysis and examine recent developments in different areas of ILs chemistry and technologies. The book should help in systematization of knowledges in ILs science, creation of new approaches in this field and further promotion of ILs technologies for the future.
Download or read book Nitrogen in the Environment written by J.L. Hatfield and published by Elsevier. This book was released on 2008-08-28 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is one of the most critical elements for all life forms. In agricultural systems it is essential for the production of crops for feed, food, and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Nitrogen in the Environment provides a wholistic perspective and comprehensive treatment of nitrogen. The scope of this book is diverse covering a range of topics and issues related to furthering our understanding of nitrogen in the environment at farm and national levels. Issues of nitrogen from its effects on crops and human nutrition to nitrogen in ground water, watersheds, streams, rivers, and coastal marine environments are discussed to provide a broad view of the problem and support scientists, researchers, and engineers in formulating comprehensive solutions. * The only source which presents an international, wholistic perspective of the effects of nitrogen in the environment with worldwide mitigation practices * Provides details on how to improve the quality of the environment by analyzing the development of emerging technologies * Develops strategies to be used by soil scientists, agronomists, hydrologists, and geophysicists for broad scale improvement of nitrogen efficiency
Download or read book Traces of Heavy Metals in Water Removal Processes and Monitoring written by J. Eleanora Sabadell and published by . This book was released on 1973 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatment of Microcontaminants in Drinking Water written by Rangesh Srinivasan and published by . This book was released on 2009 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the challenges in drinking water treatment arise out of contaminants that are present in extremely low concentrations and have properties that make them extremely difficult to be removed by conventional treatment methods. This study tries to look at the treatment of two such microcontaminants's serchlorate and MIB (Methyl Isoborneol)/ Geosmin. Perchlorate (ClO4- ) is a major inorganic contaminant in drinking water and has been detected in a number of public drinking water systems nationwide and has serious health impacts associated with it. A complete and critical review on this intriguing contaminant is presented including a detailed discussion on sources of contamination, the policy aspects including regulation and the available treatment technologies and their feasibility. It is clearly evident that it would not be possible to achieve compete removal of perchlorate with the direct application of a single technology and it is highly likely that a combination of these technologies would have to be employed to overcome this challenge. Physical removal technologies such as ion exchange are effective for perchlorate but they also generate brines highly concentrated in perchlorate and suffer from selectivity issues. Hence a destruction technology that completely reduces perchlorate to harmless chloride is preferred. This study investigates the potential removal of perchlorate ion in drinking water by combining electrochemical reduction with zero-valent iron reduction and the effectiveness of this technology will serve as a basis to further develop the proposed methodology to purify surface or ground water in target zones at a larger scale. Geosmin and MIB are organic semi-volatile chemicals that can seriously influence the finished quality of drinking water by imparting taste and odor to it even at extremely low concentrations. A critical review of these two taste and odor causing compounds in drinking water is presented with emphasis on the relevant treatment alternatives. Although some of these technologies are more effective and show more promise than the others, much work remains to be done in order to optimize these technologies for removal of MIB and geosmin while being effectively used for treatment of other common contaminants. Studies have shown that activated carbon adsorption is the most effective technology currently available for treatment of these compounds. The impact of adsorbent pore size distribution (PSD) and presence of natural organic matter (NOM) on activated carbon adsorption of MIB and geosmin was evaluated through single solute and multicomponent adsorption of these compounds on three types of activated carbon fibers (ACFs) and one granular activated carbon (GAC). It was seen that the experimental data was well defined by single solute adsorption isotherms and both PSD and NOM were major factors influencing adsorption. The binary adsorption of MIB and geosmin on ACFs and GAC was well defined by the ideal adsorbed solute theory (IAST), which is a well established thermodynamic model for multicomponent adsorption. There were no significant differences in the binary isotherm between the oxic and anoxic conditions, indicating that adsorption was purely through physical adsorption and no oligomerization was taking place.
Download or read book Quarterly Report written by and published by . This book was released on 1978 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traces of Heavy Metals in Water written by J. Eleonora Sabadell and published by . This book was released on 1974 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reviews of Environmental Contamination and Toxicology Volume 236 written by Pim de Voogt and published by Springer. This book was released on 2015-09-30 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews of Environmental Contamination and Toxicology provides concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.
Download or read book Toxicology Research Projects Directory written by and published by . This book was released on 1978 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Removal of Organic Contaminants from Drinking Water Using Techniques Other Than Granular Activated Carbon Alone written by and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Contamination Emergencies written by Ulrich Borchers and published by Royal Society of Chemistry. This book was released on 2013 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the proceedings of the fifth conference on this topic and addresses these issues relating to drinking water and drinking water systems.
Download or read book Technical Reports of the Northern River Basins Study by Subject and Geographical Area Studied written by Mark S. J. Ouellett and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists Northern River Basins Study technical reports by issue number, subject, and geographic area studied. Subject areas used to classify the reports are: hydrology/hydraulics, nutrients/dissolved oxygen, contaminants, food chain, drinking water, other uses, traditional knowledge, and synthesis and modelling. Ten geographic divisions are used: three each for the Athabasca and Peace Rivers, and one each of the Wapiti/Smoky rivers, Peace-Athabasca Delta, Lake Athabasca, and Rivière des Rochers/Slave River.
Download or read book Safe Drinking Water written by Rip G. Rice and published by CRC Press. This book was released on 2017-11-22 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of the nation’s new coverages serves as a ready reminder that drinking water safety is more than regional of local concern. In recent times, the print media alone has drawn attention to barium, bacteria, heavy metals, and increasingly organic contaminants, in public water supplies located in Florida, Rhode Island, Texas, Oregon, Illinois, Minnesota, North Carolina, Michigan, and California, to name a few. In an effort to address one of the major issues confronting the future of the nation’s drinking water supplies, chemical contamination, the Drinking Water Research Foundation and the American Chemical Society presented the symposium, "Safe Drinking Water: the Impact of Chemicals on a Limited Resource." To add balance to the total presentation, two papers were included that were not part of the symposium. Many questions as to the public significance of hundreds of organic chemicals known to be present in the national drinking water supply are waiting to be answered. In some areas of the country, aid rain-induced alterations of the natural leaching process represent an unexplored potential source of toxic pollutants. Finding workable ways to clean up the water supply will be an ongoing task. Addressing these questions, as well as investigating how other countries are responding to these problems, the alternate sources available, such as bottled water, and point of use devices, the presenters in this symposium have attempted to explain the problems, situation, and alternatives. As progress is made in one area, setbacks will occur in another. As we eliminate problems thought chemical technology, we often create others, such as contamination of our waters. While all the situations, problems, and alternatives are not discussed in these proceedings, it is hoped that some attention will be brought to the public, government, and private sectors so that future work will be done to assure the nation of safe drinking water resources.
Download or read book Treatment Effectiveness for the Removal of Selected Contaminants from Drinking Water written by Ralph Stone and published by . This book was released on 1975 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
