Principles of Water and Wastewater Treatment Processes is the third book in the Water and Wastewater Process Technologies Series. The book outlines the principle unit operations that are involved in the separation, degradation and utilisation of organic and inorganic matter during water and wastewater treatment. The module builds on the subjects of chemistry, biology and engineering covered in Process Science and Engineering for Water and Wastewater Treatment (Module 1) and provides a descriptive introduction to unit operations that are further described with design and operational details in later books in the series. The text of Principles of Water and Wastewater Treatment Processes has been divided into the following Units: Water Quality Process Flowsheeting Physical Processes Chemical Processes Sorption Processes Biological Processes Membrane Processes Sludge Treatment Utilisation Odour Management These units have has been designed for individual self-paced study that includes photographs, illustrations and tables and describe the form, function and application of unit operations for the treatment of water and wastewater. Each section of the text gives step-by-step learning in a particular subject, that includes an approximation of how long you will need to spend on that section and provides key points that highlight the principles of the different sections. Each unit includes exercises to help understand the material in the text, self-assessment questions to test your understanding and text references.

As part of IWA's role to promote networking and career development opportunities for young researchers and professionals, IWA established the Young Researchers Conference (YRC) in 2002 as a biennial international forum for young water professionals to discuss current and future environnmental concerns and network with peers from different research institutions, disciplines and countries. The selection of papers in this special issue of IWA Publishing's Water and Environmental Management Series represents papers that were presented at the 3rd Young Researchers Conference (YRC06) held on the 24-26 of May, 2006 at Nanyang Technological University, Singapore. The 58 papers from 23 countries were selecteed from 238 submissions and illustrate various aspects of water and wastewater engineering, technology and management, including chapters on: Wastewater Treatment Water Policy and Management Sludge Management and Waste Treatment Monitoring and Data Analysis Modelling Water Quality and Wastewater Treatment Wastewater Biotechnology

Research into the sampling and measurement of odours has developed in a number of sectors, especially the agriculture, food and process industries, with knowledge from each sector being transferred to the wastewater and solid waste management sectors. Progressive developments in odour research have resulted in researchers re-tracing original research studies to understand the contribution and variability of differing sampling and measurement techniques. There are, however, very few reviews that compile earlier studies across each sector. This study looks at the information used to support current practices in odour sampling and measurement for impact reduction. Sampling for Measurement of Odours reviews European and other internationally available research studies to understand odour sampling and measurement practice in waste applications. The emphasis is placed on appropriate odour sampling and its relationship to differing measurement techniques. As recent developments in standardisation of odour measurement have reduced much of the variation and identified best practice in this area there is, at present, a far greater variation in sampling techniques with serious implications for the quality of samples obtained and their usefulness for assessing odour impact. The review considers the available information on uncontrolled area sources, identifies factors influencing sample losses or transformations and looks at information on the sources of variability identified through standardisation programmes. This need for this report was identified by the Odour Network, an EPSRC-sponsored discussion platform intended to promote multidisciplinary research in the areas of odour measurement, modelling and treatment. Scientific and Technical Report No.17