Solids in Sewers

Solids in Sewers

Author: Richard M. Ashley

Publisher: IWA Publishing

Published: 2004-04-30

Total Pages: 362

ISBN-13: 1900222914

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This Report presents information on the current state of knowledge of the origins, occurrence, nature and effects of sewer solids for use by engineers, scientists, administrators and water quality planners for the planning, design and operation of sewerage systems. The report addresses both sewer maintenance requirements and environmental protection issues. Increasing environmental standards, coupled with public expectations, have led to stringent water quality standards. In response to this, it has been necessary to develop new methodologies and computer based analytical techniques to model and understand the performance of all aspects of waste water systems. Fundamental to these techniques is the understanding of the way in which sewer solids contribute to the poor performance of wastewater systems and consequential environmental damage. The information presented in this Report about the origins, nature, movement, hydraulic and polluting effects of solids in sewers has enabled strategies and rules to be developed for the management of sewerage systems to minimise the deleterious effects of these solids and associated pollutants. Scientific & Technical Report No. 14


Flow Equalization

Flow Equalization

Author: United States. Environmental Protection Agency. Office of Technology Transfer

Publisher:

Published: 1974

Total Pages: 36

ISBN-13:

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Discusses equalization of wastewater flows at municipal wastewater treatment plants. Focuses on equalization of dry weather flows. Includes performance and case histories.


Biosolids Applied to Land

Biosolids Applied to Land

Author: National Research Council

Publisher: National Academies Press

Published: 2002-11-01

Total Pages: 366

ISBN-13: 0309084865

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The 1993 regulation (Part 503 Rule) governing the land application of biosolids was established to protect public health and the environment from reasonably anticipated adverse effects. Included in the regulation are chemical pollutant limits, operational standards designed to reduce pathogens and the attraction of disease vectors, and management practices. This report from the Board on Environmental Studies and Toxicology evaluates the technical methods and approaches used by EPA to establish those standards and practices, focusing specifically on human health protection. The report examines improvements in risk-assessment practices and advances in the scientific database since promulgation of the regulation, and makes recommendations for addressing public health concerns, uncertainties, and data gaps about the technical basis of the biosolids standards.