Understanding Arsenic Removal During Conventional Drinking Water Treatment PDF Download
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Author: Laurie Suzanne McNeill
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 198
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Author: Laurie Suzanne McNeill
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 198
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Book Description
Author: Bryan Black
Publisher: American Water Works Association
ISBN: 158321058X
Category : Arsenic
Languages : en
Pages : 90
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Book Description
The recently lowered arsenic maximum contaminant level (MCL) presents new challenges in the monitoring and treatment capabilities of drinking water utilities. This report provides advice to utilities and consultants as they monitor, make treatment modifications to control arsenic, and explain arsenic issues to the public. It overviews research on arsenic in drinking water with respect to health issues, occurrence, monitoring and treatment, and reviews the major treatment processescoagulation, lime softening, iron-manganese removal, ion exchange, activated alumina, reverse osmosis, nanofiltration, and augmented micro- or ultrafiltration. No index. Member price, $85. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Author:
Publisher: DIANE Publishing
ISBN: 1422330028
Category : Arsenic
Languages : en
Pages : 164
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 371
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Book Description
Congress created the Arsenic Water Technology Partnership (AWTP) in 2002 to develop and provide solutions for the cost-effective removal of arsenic from drinking water. The AWTP was funded by four congressional appropriations (FY03-FY06) to evaluate and develop new technologies that could significantly reduce compliance costs associated with the new 0.010 mg/L maximum contaminant level (MCL) for arsenic in drinking water. Initially focused on arsenic research, in FY06 the AWTP was expanded to include desalination research upon recognition that the research challenges were similar. The funding for the research and subsequent transfer of technology was made available by Congress through the Department of Energy (DOE). The AWTP was a collaborative effort between DOE's Sandia National Laboratories (Sandia), Water Research Foundation (WaterRF, formerly Awwa Research Foundation) and WERC: A Consortium for Environmental Education and Technology Development based at New Mexico State University (WERC). Key features of the AWTP included technology development, technology implementation/testing and technology transfer. Each of the partners evaluated and oversaw development of new arsenic and desalination treatment technologies, and the technology transfer program ensured that successful technologies were transferred to the water supply community. Through the use of an arsenic treatment cost model, training sessions and a web site, information on arsenic removal and desalination technologies was transferred to stakeholders. KEY ACCOMPLISHMENTS The AWTP partnership funded research on, and deployment and testing of, innovative arsenic and desalination removal technologies; education for small and large water system operators; and development of a comprehensive web-based tool for arsenic treatment technology selection using site-specific data. As water becomes scarcer, and potable water supplies become increasingly vulnerable to contamination, the development of affordable water treatment systems is critical. Choosing the best available treatment system can be difficult. The AWTP has developed and evaluated improved arsenic and desalination treatment systems and provided that information to water utilities and stakeholders. Key technology advancements achieved by the partnership include: ARSENIC Development and full-scale implementation (San Antonio, NM) of an in-situ treatment process that is producing drinking water without the generation of any residuals that require disposal. The way is now paved for in-situ treatment to be used throughout the U.S. Detailed information on how to evaluate and prevent unintended consequences of bringing an arsenic treatment technology online prior to implementation, including: -potential for increased distribution system corrosion -potential for treatment systems to release arsenic into drinking water due to unintended pH variation Methods and options on the most appropriate ways to classify, stabilize and dispose of potentially hazardous arsenic-containing water treatment residuals A much improved understanding of water quality characteristics that impact specific treatment technologies allowing for site-specific selection of a best-available-technology Demonstrated at pilot scale that use of ultra-light filter media in a coagulation-filtration process can significantly reduce required backwash water volume and achieve 99 percent feedwater recovery while effectively removing arsenic Development of a polymeric ligand exchanger that selectively and effectively removes the oxidized form of arsenic under typical groundwater conditions, which is best utilized for treating water with high sulfate and relatively low alkalinity Development of iron-granular activated carbon (GAC) and titanium-GAC composite adsorbents for arsenic removal, which can simultaneously remove contaminants that adsorb onto activated carbon, e.g., neutral organic chemicals, radionuclides, and taste-and-odor compounds DESALINATION Development of a comprehensive and detailed set of guidelines for utilities wanting to evaluate and bring a desalination treatment process online Improved understanding of membrane fouling in seawater desalination, and evaluation of a pretreatment method to minimize fouling Improved understanding of mechanisms underlying VSEP, a membrane-based inland brackish desalination process that may enhance recovery by up to 25% Demonstrated a hybrid reverse osmosis-forward osmosis process which can enhance seawater desalination through dilution with treated wastewater.
Author: Nalan Kabay
Publisher: CRC Press
ISBN: 0203843398
Category : Science
Languages : en
Pages : 270
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Book Description
A prevalent and increasingly important issue, arsenic removal continues to be one of the most important areas of water treatment. Conventional treatment plants may employ several methods for removing arsenic from water. Commonly used processes include oxidation, sedimentation, coagulation and filtration, lime treatment, adsorption onto sorptiv
Author: Dennis A. Clifford
Publisher:
ISBN:
Category : Arsenic
Languages : en
Pages : 8
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Author:
Publisher: DIANE Publishing
ISBN: 1428901507
Category :
Languages : en
Pages : 108
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Book Description
Author: Gayle Newcombe
Publisher: Academic Press
ISBN: 0080530516
Category : Science
Languages : en
Pages : 377
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Book Description
It is difficult to imagine anything more important to the human population than safe drinking water. Lack of clean drinking water is still the major cause of illness and death in young children in developing countries. In more fortunate communities, where water treatment is practiced, the primary aim of water authorities is to provide water that is free from pathogens and toxins. Most countries now have water quality regulations, or guidelines, which are driving water authorities to produce purer water, with the minimum of contamination from natural or man-made origin. At the same time, consumers are demanding that chemicals added during the treatment of drinking water be kept to a minimum. As a consequence, conventional clarification methods are being challenged to comply with the new regulations and restrictions and our understanding of the mechanisms involved is being tested as never before. Interface Science in Drinking Water Treatment contains a rigorous review of water treatment practices from a fundamental viewpoint. The book includes material from leading experts in the field of water treatment, reviewing their specific fields of expertise against a background of colloid and surface chemistry, and examines each step of the journey from source to consumer tap. It therefore permits the reader to develop a deep understanding of the complex processes taking place and of the necessary treatments which are vital for the provision of safe and palatable drinking water. The book is aimed at researchers, educators and practitioners in science and engineering, particularly those involved in water treatment and colloidal chemistry. - Covers all existing water treatment processes, approached from a fundamental surface and colloid science viewpoint - Unique collection of R&D authors, all experts in water treatment processes - Comprehensive review of water treatment with a complete list of references
Author: Frederick Jr Rubel
Publisher:
ISBN:
Category : Aluminum oxide
Languages : en
Pages : 80
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Book Description
Author: Phyllis Frank
Publisher:
ISBN:
Category : Arsenic
Languages : en
Pages : 86
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Book Description
