Natural wastewater treatment systems

"The first edition of natural wastewater treatment systems has long served as the basis for understanding the design and performance of natural systems in treating wastewater. This updated edition will only enhance its recognition as an industry standard." Calling for ecologically and economically sound wastewater treatment systems, the authors of natural wastewater treatment systems explore the use of wetlands, sprinkler irrigation, groundwater recharge, and other natural systems as sustainable methods for the treatment and management of wastewater. Based on work by prominent experts in natural waste treatment, this text provides a thorough explanation on how soil and plants can successfully sustain microbial populations in the treatment of wastewater. Determining that natural systems cost less to construct and operate and require less energy than mechanical treatment alternatives, the text also explains how these processes produce lower amounts of residual solids and use little or no chemicals. What's new in the second edition: This revised edition includes current design and regulatory and operational developments in the natural wastewater treatment field. It provides detailed examples and analyses along with significant operational data in each chapter. It also considers how processes provide passive treatment with a minimum of mechanical elements and describes new approaches to partially mixed ponds, including dual-powered aeration ponds. Introduces the planning procedures and treatment mechanisms responsible for treatment in ponds, wetlands, land applications, and soil absorption systems. Presents design criteria and methods of pond treatment and pond effluent upgrading. Describes constructed wetlands design procedures, process applications, treatment performance data, and land treatment concepts and design equations. Provides new case studies of decentralized natural treatment and reuse systems. Includes examples of onsite wastewater management district operations. Designed for practicing wastewater engineers and scientists involved in the planning, design, and operation of ponds, wetlands, land treatment, biosolids, and onsite soil-based treatment systems, the book integrates many natural treatment systems into one single source.