An Introduction to Wastewater Treatment

Description

Ventus Publishing ApS, 2011. — 80 p. — ISBN 978-87-7681-843-2This book is intended to provide an introduction to the technical concepts of wastewater treatment. It assumes that The reader has at least a first-year undergraduate level of scientific understanding but not necessarily any previous knowledge of wastewater treatment A reading list is provided at the end of the book for more in-depth information on the topics that are introduced here.The traditional aim of wastewater treatment is to enable wastewater to be disposed safely, without being a danger to public health and without polluting watercourses or causing other nuisance. Increasingly another important aim of wastewater treatment is to recover energy, nutrients, water, and other valuable resources from wastewater.Contents Preface Introduction The Aims of Wastewater Treatment The Composition of Wastewater Unit Processes in Wastewater Treatment Process Selection and Design Considerations Impact of Wastewater Effluent on Oxygen in Receiving Waters Estimating Wastewater Quantities Combined and Separate Sewers Sources and Variability in Wastewater Flow Dry Weather Flow Preliminary Treatment Screening Grit Removal Sedimentation Particle Settling Ideal Sedimentation Real Sedimentation and Settling Column Tests Underflow and Solids Mass Flux Sedimentation Tank Designs Other Solids Removal Processes Biological Treatment Biological Growth Kinetics Activated Sludge Attached Growth Processes Sludge Volume Index Nutrient Removal Nitrification and Denilrilication Phosphorus Removal Disinfection Sludge Treatment Wastewater Management in Developing Countries Emerging Trends and Concerns in Wastewater Treatment References / Further Reading