Suchergebnisse

Intro -- Preface -- Contents -- Contributors -- Chapter 1: Effects of Human Activity on the Processing of Nitrogen in Riparian Wetlands: Implications for Watershed Water Quality -- 1.1 Introduction -- 1.2 Methods -- 1.2.1 Wetland Study Sites -- 1.2.2 Quantifying Anthropogenic Activity Surrounding Wetland Study Sites -- 1.2.3 Field and Laboratory Measurements -- 1.2.3.1 Nitrogen Pools -- 1.2.3.2 Soil Accretion and Carbon Pools -- 1.2.3.3 Hydrologic Metrics -- 1.2.3.4 Data Analysis -- 1.3 Results -- 1.3.1 Nitrogen and Carbon (Soil Properties Important to N Cycling) -- 1.3.2 Hydrology -- 1.4 Summary and Conclusions -- References -- Chapter 2: Nutrients Tracking and Removal in Constructed Wetlands Treating Catchment Runoff in Norway -- 2.1 Introduction -- 2.2 Methods -- 2.2.1 Phosphorus Losses from Rural Catchments -- 2.2.2 Phosphorus Losses from On-site Wastewater Treatment Systems -- 2.2.3 Case Study -- 2.2.3.1 Site Description -- 2.2.3.2 Wetland Design -- 2.2.3.3 Source Tracking and Distribution of Pollutants Through the Seasons -- 2.3 Results and Discussion -- 2.3.1 Phosphorus Losses from the Catchments -- 2.3.1.1 Phosphorus Losses from On-site Wastewater Treatment Systems -- 2.3.2 Case Study -- 2.3.2.1 Effect of the Constructed Wetland in the Gryteland Stream -- 2.3.2.2 Faecal Contamination in the Catchment -- 2.4 Conclusions -- References -- Chapter 3: Performance of Constructed Wetlands Treating Domestic Wastewater in Norway Over a Quarter of a Century - Options for Nutrient Removal and Recycling -- 3.1 The State of the Art in a Nutshell -- 3.2 General Characteristics and Design Principles -- 3.2.1 Septic Tank -- 3.2.2 Pre-filter/Biofilter -- 3.2.3 Constructed Filter/Wetland Bed -- 3.2.4 Filter Media -- 3.3 Overall Treatment Performance -- 3.4 Recycling Options for Filter Media -- 3.5 Conclusions -- References.

Natural and constructed wetlands play a very important role on the landscape and their ecological services are highly valuable. In fact, some wetland types are regarded as one of the most valuable ecosystems on the Earth. Water management, including flood water retention, biomass production, carbon sequestration, wastewater treatment and biodiversity sources, are among the most important ecological services of wetlands. The book is aimed at the use of constructed wetlands for wastewater treatment and for the evaluation of various ecosystem services of natural wetlands. Special attention is paid to the role and potential use of wetlands on the agricultural landscape. The book presents up-to-date results of ongoing research and the content of the book could be used by wetland scientists, researchers, engineers, designers, regulators, decision-makers, universities teachers, landscape engineers and landscape planners as well as by water authorities, water regulatory offices or wastewater treatment research institutions. Jan Vymazal received his degrees (M.Sc. and Ph.D.) from Prague Institute of Chemical Technology. After five years in Water Research Institute in Prague he spent two years at Duke University, North Carolina. At present, he is affiliated with Czech University of Life Sciences Prague where he has become Full Professor at the Department of Applied Ecology. His principal research interests are in the areas of wastewater treatment in constructed wetlands and ecology of natural wetlands. He has published over 400 technical publications including two authored and seven edited books.

Natural and constructed wetlands play a very important role within the landscape and their ecological services are highly valuable. Water management, including flood water retention, biomass production, carbon sequestration, wastewater treatment and as a biodiversity source are among the most important ecological services of wetlands. In order to provide these services, wetlands need to be properly evaluated, protected and maintained. This book provides results of the latest research in wetland science around the world. Chapters deal with such topics as the use of constructed wetlands for trea