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Over 50 percent of the 6,900 million dry tons of sewage sludge generated each year in the United States is land applied. The principal controversies surrounding the land application of biosolids involve heavy metals and pathogens. Land Application of Sewage Sludge and Biosolids is a comprehensive, scientific text providing a complete review of vari
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.
Biosolids (appropriately treated sewage sludge) can make an important contribution to sustainable environmental management, through the return of organic material, trace elements, moisture and nutrients to our soils. The Guidelines for Environmental Management: Biosolids Land Application enables this beneficial use of biosolids, by providing a management framework that ensures any chemical and microbiological risks are appropriately managed.
This book covers the advantages, limitations and operational standards for common land application of biosolids practices, including uses on agricultural lands, forest lands, reclamation sites, and public and private use sites. It is useful to people in all aspects of the wastewater industry.
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.
Land application of sewage sludge generated by domestic sewage is performed in an environmentally safe and cost-effective manner in many communities. Land application involves taking advantage of the fertilizing and soil conditioning properties of sewage sludge by spreading the sewage sludge on the soil surface, incorporating or injecting the sewage sludge into soil, or spraying the sewage sludge. Because sewage sludge disposal practices (e.g., landfilling) are becoming less available and more costly, and because of the increasing desire to beneficially reuse waste residuals whenever possible, land application is increasingly chosen as a sewage sludge use or disposal practice. Approximately 33 percent of the 5.4 million dry metric tons of sewage sludge generated annually in the United States at publicly owned treatment works (POTWs) is land applied. Of the sewage sludge that is land applied, approximately 67 percent is land applied on agricultural lands, 3 percent on forest lands, approximately 9 percent on reclamation sites, and 9 percent on public contact sites; 12 percent is sold or given away in a bag or other container for application to the land. In addition, approximately 8.6 billion gallons of domestic sewage is generated annually. Land application of sewage sludge has been practiced in many countries for centuries so that the nutrients (e.g., nitrogen, phosphorus) and organic matter in sewage sludge can be beneficially used to grow crops or other vegetation. Over the years, land application has been increasingly managed to protect human health and the environment from various potentially harmful constituents typically found in sewage sludge, such as bacteria, viruses, and other pathogens; metals (e.g., cadmium and lead); toxic organic chemicals (e.g., PCBs); and nutrients (e.g., nitrogen as nitrate). Management of the land application of sewage has included regulatory measures; voluntary and mandatory pretreatment of wastewater and/or sludge by industry to improve quality (e.g., lower pollutant levels); and use of good management practices at land application sites (e.g., buffer zones, slope restrictions). Land Application of Biosolids: Process Design Manual covers the advantages, limitations and operational standards for common land application of biosolids practices, including uses on agricultural lands, forest lands, reclamation sites, and public contact and private use sites. This process design manual will help you use this cost-effective and environmentally safe biosolids disposal method to recycle, fertilize and condition agricultural, forest and reclamation soils. Land Application of Biosolids: Process Design Manual will be useful to people in all aspects of the wastewater industry.
A-Z guide to soil/plant/microbe-based wastewatertreatment Engineers and planners eager to benefit from the costefficiencies and convenience of land treatment of waste will find practical guidelines in this comprehensive manual. It covers soil hydraulics, vegetation selection, site selection, field investigations, preapplication treatment and storage, and transmission and distribution of wastewater. You're introduced to: Design procedures and appropriate uses for each of the three land treatment processes: soils, plants, and microbiological agents Special attributes of food processing wastewater, with 6 case studies The use of biosolids produced by mechanical treatment systems as crop nutrients Options for preapplication treatment, including ponds and constructed wetlands Much more
Author : Lawrence K. Wang Publisher : Springer Science & Business Media Page : 831 pages File Size : 40,47 MB Release : 2007-11-17 Category : Science ISBN : 1592599966
The aim of Biosolids Treatment Processes, is to cover entire environmental fields. These include air and noise pollution control, solid waste processing and resource recovery, physicochemical treatment processes, biological treatment processes, biosolids management, water resources, natural control processes, radioactive waste disposal and thermal pollution control. It also aims to employ a multimedia approach to environmental pollution control.