Nitrification and Denitrification in the Activated Sludge Process / Edition 1

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Nitrification and Denitrification in the Activated Sludge Process is an ideal companion for operators and technicians of wastewater treatment plants as they study to receive certification in their field, now required in more than thirty states. Sanitary engineers, chemists, microbiologists, and educators will benefit from this comprehensive guide.
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Product Details

  • ISBN-13: 9780471065081
  • Publisher: Wiley
  • Publication date: 1/9/2002
  • Series: Wastewater Microbiology Series
  • Edition number: 1
  • Pages: 208
  • Sales rank: 1,037,179
  • Product dimensions: 10.00 (w) x 7.00 (h) x 0.44 (d)

Meet the Author

MICHAEL H. GERARDI is Research Project Associate and Instructor at the Pennsylvania State University in Linden, Pennsylvania.
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Table of Contents

Pt. I Overview 1
1 Nitrogen: Environmental and Wastewater Concerns 3
2 The Oxidation States of Nitrogen 11
3 Nitrogenous Compounds 17
4 Bacteria 21
5 The Activated Sludge Process 31
Pt. II Nitrification 35
6 Introduction to Nitrification 37
7 Nitrifying Bacteria 43
8 Organotrophs 55
9 The Wastewater Nitrogen Cycle 63
10 Nitrogen Assimilation 77
11 Forms of Nitrification 81
12 Indicators of Nitrification 87
13 Nitrite Ion Accumulation 91
14 BOD 95
15 Dissolved Oxygen 103
16 Alkalinity and pH 109
17 Temperature 115
18 Inhibition and Toxicity 119
19 Mode of Operation 123
20 Classification of Nitrification Systems 127
21 Troubleshooting Key and Tables 129
Pt. III Denitrification 133
22 Introduction to Denitrification 135
23 Denitrifying Bacteria 137
24 Biochemical Pathway and Respiration 139
25 Gaseous End Products 143
26 Sources of Nitrite Ions and Nitrate Ions 145
27 Operational Factors Influencing Denitrification 147
28 Substrate or cBOD 149
29 Free Molecular Oxygen 151
30 The Occurrence of Denitrification 153
31 Monitoring and Correcting Accidental Denitrification 159
32 Zoning 163
33 Benefits of Denitrification 167
App. I The Gram Stain 169
App. II F/M, HRT, MCRT 171
References 175
Abbreviations and Acronyms 179
Chemical Compounds and Elements 181
Glossary 183
Index 191
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