Additional Information
Book Details
Abstract
Activated Sludge and Aerobic Biofilm Reactors is the fifth volume in the series Biological Wastewater Treatment. The first part of the book is devoted to the activated sludge process, covering the removal of organic matter, nitrogen and phosphorus.A detailed analysis of the biological reactor (aeration tank) and the final sedimentation tanks is provided. The second part of the book covers aerobic biofilm reactors, especially trickling filters, rotating biological contractors and submerged aerated biofilters. For all the systems, the book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects and operational guidelines.
About the series: The series is based on a highly acclaimed set of best selling textbooks. This international version is comprised by six textbooks giving a state-of-the-art presentation of the science and technology of biological wastewater treatment. Other titles in the series are: Volume 1: Waste Stabilisation Ponds; Volume 2: Basic Principles of Wastewater Treatment; Volume 3: Waste Stabilization Ponds; Volume 4: Anaerobic Reactors; Volume 6: Sludge Treatment and Disposal
Table of Contents
| Section Title | Page | Action | Price |
|---|---|---|---|
| Contents | vi | ||
| Preface | x | ||
| 1 Activated sludge process and main variants | 1 | ||
| 1.1 Introduction | 1 | ||
| 1.2 Variants of the Activated Sludge Process | 4 | ||
| 2 Principles of organic matter removal in continuous-flow activated sludge systems | 17 | ||
| 2.1 Preliminaries | 17 | ||
| 2.2 Sludge age in activated sludge systems | 19 | ||
| 2.3 Suspended solids concentration in the reactor | 19 | ||
| 2.4 Calculation of the reactor volume | 21 | ||
| 2.5 Substrate removal | 24 | ||
| 2.6 Soluble bod and total bod in the effluent | 27 | ||
| 2.7 Sludge digestion in the reactor | 31 | ||
| 2.8 Recirculation of the activated sludge | 34 | ||
| 2.9 Production and removal of excess sludge | 39 | ||
| 2.10 Oxygen requirements | 48 | ||
| 2.11 Nutrient requirements | 55 | ||
| 2.12 Influence of the temperature | 58 | ||
| 2.13 Functional relations with the sludge age | 59 | ||
| 3 Design of continuous-flow activated sludge reactors for organic matter removal | 68 | ||
| 3.1 Selection of the sludge age | 68 | ||
| 3.2 Design parameters | 70 | ||
| 3.3 Physical configuration of the reactor | 71 | ||
| 3.4 design details | 74 | ||
| 4 Design of activated sludge sedimentation tanks | 77 | ||
| 4.1 Types of sedimentation tanks | 77 | ||
| 4.2 Determination of the surface area required for secondary sedimentation tanks | 78 | ||
| 4.3 Design details in secondary sedimentation tanks | 99 | ||
| 4.4 Design of primary sedimentation tanks | 101 | ||
| 5 Design example of an activated sludge system for organic matter removal | 104 | ||
| 5.1 Introduction | 104 | ||
| 5.2 Model parameters and coefficients | 105 | ||
| 5.3 DESIGN of the conventional activated sludge system | 106 | ||
| 5.4 Summary of the design | 119 | ||
| 6 Principles of biological nutrient removal | 121 | ||
| 6.1 Introduction | 121 | ||
| 6.2 Nitrogen in raw sewage and main transformations in the treatment process | 123 | ||
| 6.3 Principles of nitrification | 127 | ||
| 6.4 Principles of biological denitrification | 140 | ||
| 6.5 Principles of biological phosphorus removal | 148 | ||
| 7 Design of continuous-flow systems for biological nutrient removal | 159 | ||
| 7.1 Biological nitrogen removal | 159 | ||
| 7.2 Biological removal of nitrogen and phosphorus | 176 | ||
| 8 Intermittent operation systems (sequencing batch reactors) | 185 | ||
| 8.1 Introduction | 185 | ||
| 8.2 Principles of the process | 185 | ||
| 8.3 Process variants | 188 | ||
| 8.4 Design criteria for sequencing batch reactors | 193 | ||
| 8.5 Design methodology for sequencing batch reactors | 196 | ||
| 8.6 Design example of a sequencing batch reactor | 197 | ||
| 9 Activated sludge for the post-treatment of the effluents from anaerobic reactors | 204 | ||
| 9.1 Design criteria and parameters | 204 | ||
| 9.2 Design example of an activated sludge system for the post-treatment of the effluent from a uasb reactor | 207 | ||
| 10 Biological selectors | 217 | ||
| 10.1 Introduction | 217 | ||
| 10.2 Types of selectors | 219 | ||
| 11 Process control | 223 | ||
| 11.1 Introduction | 223 | ||
| 11.2 Basic concepts of process control | 225 | ||
| 11.3 Dissolved oxygen control | 227 | ||
| 11.4 Solids control | 228 | ||
| 11.5 Monitoring the system | 235 | ||
| 12 Identification and correction of operational problems | 236 | ||
| 12.1 Introduction | 236 | ||
| 12.2 High concentrations of suspended solids in the effluent | 237 | ||
| 12.3 High bod concentrations in the effluent | 260 | ||
| 12.4 High ammonia concentrations in the effluent | 263 | ||
| 13 Basic principles of aerobic biofilm reactors | 265 | ||
| 13.1 Introduction | 265 | ||
| 13.2 Classification of aerobic biofilm reactors | 266 | ||
| 13.3 Formation, structure and behaviour of biofilms | 267 | ||
| 14 Trickling filters | 271 | ||
| 14.1 Description of the technology | 271 | ||
| 14.2 Design criteria | 275 | ||
| 14.3 Construction aspects | 282 | ||
| 14.4 Operational aspects | 283 | ||
| 15 Rotating biological contactors | 287 | ||
| 15.1 Introduction | 287 | ||
| 15.2 Description of the technology | 287 | ||
| 15.3 Design criteria | 289 | ||
| 15.4 Construction aspects and characteristics of the support medium | 292 | ||
| 16 Submerged aerated biofilters | 294 | ||
| 16.1 Introduction | 294 | ||
| 16.2 Description of the technology | 294 | ||
| 16.3 Design criteria | 302 | ||
| 16.4 Construction aspects | 304 | ||
| 16.5 Operational aspects | 305 | ||
| References | 313 |