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Giardia and Giardiasis
The intestinal protozoan Giardia was first described over 300 years ago in 1681 by Leeuwenhoek, from his own stools. In his description of Giardia, he noted the size, movement, and morphology of the organism, and associated its presence with the diarrheic nature of his stools and his dietary habits. This truly remarkable account contains the first description of Giardia in morphologic, pathogenic, and epidemiologic terms. Our knowledge of the organisms in the genus Giardia has advanced tremendously in the past two decades. With the advent of new tech nologies, including techniques in electron microscopy, biochemistry, immunochemistry, tissue culture, and physiology, a tidal wave of information has appeared on the organization and function of this parasitic protozoan and its interaction with its host. The purpose of this book is to celebrate the tricentennial discovery of Giardia by Leeuwenhoek by presenting the above-mentioned advances in our knowledge of Giardia and giardiasis. In the first section of this book, the dominant theme is the biology of the organism and the correlation of structure-function relationships.
Water Treatment Unit Processes
The unit process approach, common in the field of chemical engineering, was introduced about 1962 to the field of environmental engineering. An understanding of unit processes is the foundation for continued learning and for designing treatment systems. The time is ripe for a new textbook that delineates the role of unit process principles in environmental engineering. Suitable for a two-semester course, Water Treatment Unit Processes: Physical and Chemical provides the grounding in the underlying principles of each unit process that students need in order to link theory to practice. Bridging the gap between scientific principles and engineering practice, the book covers approaches that are ...
Regional Cooperation for Water Quality Improvement in Southwestern Pennsylvania
The city of Pittsburgh and surrounding area of southwestern Pennsylvania face complex water quality problems, due in large part to aging wastewater infrastructures that cannot handle sewer overflows and stormwater runoff, especially during wet weather. Other problems such as acid mine drainage are a legacy of the region's past coal mining, heavy industry, and manufacturing economy. Currently, water planning and management in southwestern Pennsylvania is highly fragmented; federal and state governments, 11 counties, hundreds of municipalities, and other entities all play roles, but with little coordination or cooperation. The report finds that a comprehensive, watershed-based approach is needed to effectively meet water quality standards throughout the region in the most cost-effective manner. The report outlines both technical and institutional alternatives to consider in the development and implementation of such an approach.
Protocol for Equipment Verification Testing for Arsenic Removal
This document is the study protocol to be used for verification testing of equipment designed to achieve arsenic removal. In order to participate in the equipment verification process, the equipment Manufacturer is requested to adhere to the requirements of this study protocol in developing a Manufacturer Field Operations Document. The final submission of the Manufacturer Field Operations Document shall: (1) include the information requested in this protocol; (2) conform to the format identified herein; and (3) conform to the specific NSF International (NSF) Equipment Verification Testing Plan or Plans related to the statement(s) of capabilities that are to be verified. The Manufacturer Field Operations Document may include more than one Testing Plan. For example, testing might be undertaken to verify performance of a package plant employing coagulation and filtration for arsenic removal and for removal of microbiological and particulate contaminants or for removal of disinfection by-product precursors.
Operational Control of Coagulation and Filtration Processes
This manual discussed the latest techniques, procedures, and equipment necessary to assure efficient and effective treatment processes of coagulation and filtration. Provides thorough topical coverage to assure regulations are met.
Envisioning the Agenda for Water Resources Research in the Twenty-First Century
In this century, the United States will be challenged to provide sufficient quantities of high-quality water to its growing population. Water is a limiting resource for human well-being and social development, and projections of population growth as well as changing social values suggest that demands for this resource will increase significantly. These projections have fueled concerns among the public and water resources professionals alike about the adequacy of future water supplies, the sustainability and restoration of aquatic ecosystems, and the viability of our current water resource research programs and our institutional and physical water resource infrastructures. With the goal of ou...
Technologies for Upgrading Existing or Designing New Drinking Water
This book discusses drinking water treatment technologies that address contaminants and contaminant categories regulated under the Safe Drinking Water Act and its 1986 amendments. It covers both established and emerging technologies needed to comply with the new regulations of 1986 amendment.
