Activated Sludge - 100 Years and Counting covers the current status of all aspects of the activated sludge process and looks forward to its further development in the future. It celebrates 100 years of the Activated Sludge process, from the time that the early developers presented the seminal works that led to its eventual worldwide adoption. The book assembles contributions from renowned world leaders in activated sludge research, development, technology and application. The objective of the book is to summarise the knowledge of all aspects of the activated sludge process and to present and discuss anticipated future developments. The book comprises invited papers that were delivered at the conference "Activated Sludge...100 Years and Counting!", held in Essen, Germany, June 12th to 14th, 2014. Activated Sludge - 100 Years and Counting is of interest to researchers, engineers, designers, operations specialists, and governmental agencies from a wide range of disciplines associated with all aspects of the activated sludge process. Authors: David Jenkins, University of California at Berkeley, USA, Jiri Wanner, Institute of Chemical Technology, Prague, Czech Republic.

- questions how bureaucracies conceive of and consequently interact with nature, and suggests that our managed public landscapes are neither entirely managed nor entirely wild - questions which kinds of human influence, conceived of in the widest possible sense, will produce ideal environments for future generations, and who gets to choose - draws on the author's experience as an objective scholar and over 10 years working as a practitioner in federal land management agencies - will be of great interest to students and scholars of natural resource management, policy and politics, and professionals working in environmental management roles as well as policymakers involved public policy and administration.

- questions how bureaucracies conceive of and consequently interact with nature, and suggests that our managed public landscapes are neither entirely managed nor entirely wild - questions which kinds of human influence, conceived of in the widest possible sense, will produce ideal environments for future generations, and who gets to choose - draws on the author's experience as an objective scholar and over 10 years working as a practitioner in federal land management agencies - will be of great interest to students and scholars of natural resource management, policy and politics, and professionals working in environmental management roles as well as policymakers involved public policy and administration.

The Activated Sludge (AS) Process is old technology but is still widely adopted worldwide for its convenience and simplicity: an impressive number (many hundred of thousands) of this kind of system are in operation. Occasionally, problems such as bulking and foaming occur, causing regulation violations and large investment is often required immediately to control them. For this reason, an intense research effort has been made during the last few decades to face these problems, and this report details the work undertaken by the IWA Specialist Group on Activated Sludge Population Dynamics. This Scientific and Technical Report describes the main reasons fslyuor the growth of the different filamentous microorganisms in activated sludge, and the biological molecular tools available today for the identification of the main biomass components. The wide range of experiences around the world is documented and the methods to avoid the proliferation of these organisms are presented and critically reviewed. Activated Sludge Separation Problems consists of seven chapters, presenting up-to-date technical and scientific aspects of these processes. Scientific and Technical Report No. 16

Anaerobic/aerobic (AnA) and completely aerobic (CA) laboratory-scale sequencing batch reactors operating on an acetate- and casamino acids-based synthetic wastewater were used to investigate the suitability of the AnA process for treating nutrient?deficient wastewaters in plants that have stringent effluent nutrient requirements. Of particular interest is the case where phosphorus (P)-deficient wastewaters with highly variable influent COD loading are being treated to meet both effluent TSS and P limits. At a 4 d mean cell residence time, AnA activated sludge had an approx. 20% lower P requirement than CA activated sludge. The difference between the end-of-aerobic cycle polyhydroxyalkanoate and carbohydrate contents of the sludges indicated that the AnAsludge used more influent carbon than the CA sludge for synthesis of non-P-containing storage products. The nitrogen requirements of AnA sludge were similar to those of the CA sludge. The AnA and CA SBRs were subjected to three different transient influent COD loading patterns that simulated (#1) daily COD Loading fluctuations, (#2) low weekend COD loading, and (#3) extended low COD loading periods. During the Loading Pattern #1 experiment, the average effluent soluble P concentrations for the AnA and CA SBRs were 0.4 and 1.0 mgP/L respectively, and complete removal of influent acetate was observed. During the Loading Pattern #2 experiment, the average effluent soluble P concentrations for the AnA and CA SBRs were 0.3 and 0.9 mgP/L respectively, but effluent acetate was detected during the first high COD loading cycle following the low weekend COD loading period. During the Loading Pattern #3 experiment, the VSS content of both reactors dropped sharply, effluent acetate breakthrough occurred, and effluent P concentrations exceeding 1 mgP/L were detected in both the AnA and CA SBRs. Based on these findings, the AnA process has potential as a technologically and economically superior alternative for wastewater treatment plants treating P-deficient wastewasters to meet stringent effluent TSS and P limits. This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

The most common activated sludge operating problems causing poor plant performance are related to solids separation. Especially common are bulking and foaming. Without a proper scientific foundation to support the efforts of wastewater treatment plant management, many attempts to thwart bulking and foaming have failed. Manual on Solving Activated Sludge Bulking, Foaming, and Other Solids Separation Problems provides the critical scientific and practical underpinnings needed to understand and combat these problems. The third edition of this flagship text is a comprehensive, concise guide to the microbiological and technical aspects of controlling all types of solid separation problems. The scientific theory is applied to real-world scenarios, greatly increasing the number of real-world examples of successful control methods. New information is also included on filamentous organism growth and its application in the control of sludge bulking and foaming. Now plant operators, regulators and wastewater engineers have a complete guide for battling these formidable design and operating problems.

Do your performance measures seek primarily to detect and control undesirable activities, rather than sharing and rewarding productive behaviour? Every organisation needs to measure its performance and that of the people it employs; David Jenkins shows you how to make more productive use of such measures. For measures to be accurate and reliable there are fundamental rules that need to be applied. Ignoring or misapplying them undermines performance and impedes the achievement of the corporate goal. For any enterprise, data must be available across the whole spectrum of activity in which it is engaged. The quality of that information will depend on the way it is measured. In some commercial organisations data is regularly gathered at local level. Instead of being used at this point, it is often fed into a corporate information system which, having recycled it, issues the result in a form that does not always meet needs. In Measuring Performance, David Jenkins examines the more traditional measures of performance and highlights their shortcomings as well as assessing the merits of the alternative approaches that are currently available. The book concludes with a step-by-step guide to reviewing the effectiveness of your organisation's existing systems for measuring performance and identifying ways of improving them.

Through a curated selection of quotations, images and interviews, Filmmakers on Film reveals what matters most to the masters. Discover how the giants of filmmaking - from Sofia Coppola to Agnes Varda - developed their distinctive visual styles, the core ideas that underpin their practice and, most importantly, what their films mean to you.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.

This set gathers together key writings which chart the formative years of insurance and reviews important stages in the history of the subject from contemporary perspectives.