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From the book's introduction: This is not an introductory text about activated sludge. In this book, we discuss the observation, testing, and calculation procedures that provide data about the status of the activated sludge process. In addition, we discuss in depth how to apply this data to the business of controlling your activated sludge treatment process. Basic activated sludge concepts are addressed in this book in the context of process evaluation and control. We focus our efforts on discussing a basic, practical system of control for the process. The procedures discussed in this manual are equally applicable to all variations. An operator must have information about settleability, dissolved oxygen concentration, solids concentration, effluent quality, and clarifier sludge levels for consistent, efficient process performance of every type of activated sludge process. These procedures are covered in detail. The procedures discussed are based on work done by E. B. Mallory in the 1930's and 40's and further developed by Alfred W. West while he was head of the Operational Technology Branch of the Environmental Protection Agency in the 1960's and 70's. The system, with some modifications by this author, is frequently called the "West Method" or "Sludge Quality Method" of activated sludge process control because operational controls adjustments are based on the sludge quality existing in your facility rather than on arbitrary values.

For students of Middle English, Andrew and Waldron's The Poems of the Pearl Manuscript has been the key edition of the four Pearl poems (the best-known of which is Gawain and the Green Knight) for 30 years. Now, with the changing needs of today's Activated Sludge : Evaluating and Controlling Your Process download epub student in mind, the editors have undertaken the most comprehensive revision of the book since its inception. The revised edition includes a new introduction providing historical, literary and cultural contexts for the poems. It also incorporates a revised and updated bibliography, minor changes to the text and glossary, and significant revision and updating of the explanatory notes. In addition the authors have provided for the first time a complete prose translation of the four poems for students to use as a working tool. This is included on a CD-ROM at the back of the book.

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Author: Tim Hobson
Number of Pages: 116 pages
Published Date: 08 Dec 2009
Publisher: Createspace Independent Publishing Platform
Publication Country: United States
Language: English
ISBN: 9781500692995
Download Link: Click Here
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