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Wastewater Bacteria

ISBN: 978-0-471-97989-0
208 pages
March 2006
Wastewater Bacteria (0471979899) cover image

Description

A practical guide to wastewater bacteria and the roles they perform in wastewater treatment

Communicating material in a practical manner for operators and technicians who regulate and troubleshoot their wastewater treatment processes, Wastewater Bacteria discusses the effective control and proper operation of aerobic (activated sludge) and anaerobic (anaerobic digesters) biological treatment units to ensure that an adequate, active, and appropriate population of bacteria is present in each treatment unit. It is a hands-on guide to understanding the biology and biological conditions that occur at each treatment unit.

Avoiding unnecessary technical jargon and chemical equations, Wastewater Bacteria, the fifth book in the Wastewater Microbiology Series, explores and explains:
* Bacteria and the wastewater environment
* Enzymes and sludge production
* Nitrogen, phosphorus, and sulfur bacteria
* Floc formation and filamentous organisms
* Nitrification and denitrification
* Sulfate reduction, fermentation, and methane production
* Toxicity
* Foam and malodor production

The goal of Wastewater Bacteria is to enable plant operators to achieve the twofold basic objectives of wastewater treatment-to degrade organic wastes to a level where a significant, dissolved oxygen demand is not exerted upon receiving waters and to remove nutrients to levels where photosynthetic organisms in receiving waters are limited in their growth. This straightforward manual equips plant technicians to meet these objectives with essential information to understand the biological processes and organisms involved in wastewater treatment.
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Table of Contents

PREFACE ix

PART I BACTERIA AND THEIR ENVIRONMENT 1

1 Wastewater Microorganisms 3

2 Microbial Ecology 11

3 Bacteria 19

4 Bacterial Groups 33

5 Bioaugmentation 41

6 Pathogenic Bacteria 49

PART II ENZYMES AND BACTERIAL GROWTH 53

7 Enzymes 55

8 Hydrolytic Bacteria 59

9 Bacterial Growth 65

PART III NITROGEN, PHOSPHORUS, AND SULFUR BACTERIA 75

10 Nitrifying Bacteria 77

11 Denitrifying Bacteria 91

12 Poly-P Bacteria 103

13 Sulfur-Oxidizing and Sulfur-Reducing Bacteria 117

PART IV FLOC FORMATION 133

14 Floc-Forming Bacteria 135

15 Filamentous Bacteria 143

PART V FERMENTATION AND METHANE PRODUCTION 153

16 Fermentative Bacteria 155

17 Methane-Forming Bacteria 161

PART VI TOXICITY 165

18 Septage 167

19 Toxicity 173

PART VII FOAM AND MALODOR PRODUCTION 211

20 Microbial Foam 213

21 Biological Malodors 223

22 Atmospheric Inversions 231

REFERENCES 235

ABBREVIATIONS AND ACRONYMS 239

CHEMICAL COMPOUNDS AND ELEMENTS 241

GLOSSARY 245

INDEX 251

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Author Information

Michael H. Gerardi holds an MS in biology from James Madison University and has authored more than ninety technical publications. He is responsible for the development and presentation of wastewater biology courses at The Pennsylvania State University and is an operational specialist with Cromaglass Corporation. Mr. Gerardi also is a wastewater biologist for Water Pollution Biology, where he provides troubleshooting of wastewater treatment plants and operator training. He can be reached at www.wastewaterbiology.com.
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Reviews

"...a hand-on guide to understanding the biology and biological conditions that occur at each treatment unit."  (Journal of the American Water Resources Association, October 2006)
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