"Manual of practice no. 30"--Cover.

Chapter 2Overall Process Considerations -- Nutrient Sources -- 8 -- Effects of Nutrients on Receiving Waters -- 12 -- Wastewater Characteristics -- 13 -- Variations in Flows and Loads -- 25 -- Effect of Recycle Flows -- 27 -- Effect of Effluent Permit Requirements -- 29 -- Chapter 3 Nitrification and Denitrification -- Wastewater Characteristics -- 35 -- Nitrification -- 37 -- Denitrification -- 68 -- Combined Nitrification and Denitrification Systems -- 78 -- Hybrid Systems -- 87 -- Secondary Clarification -- 100 -- Chapter 4 Enhanced Biological Phosphorus Removal -- Introduction and Basic Theory of Enhanced Biological -- Phosphorus Removal -- 106 -- Basic Enhanced Biological Phosphorus Removal Theory -- 107 -- Basic Enhanced Biological Phosphorus Removal Design Principles -- 108 -- Operational Parameters -- 113 -- Types of Enhanced Biological Phosphorus Removal Systems -- 129 -- Process Control Methodologies -- 140 -- Chapter 5 Combined Nutrient Removal Systems -- Combined Nitrogen and Phosphorus Removal Processes -- 162 -- Flow Sheets for Combined Nutrient Removal -- 162 -- Interaction of Nitrates and Phosphorus in Biological Nutrient Removal Plants -- 178 -- Process Control Methodologies -- 182 -- Effect of Chemical Phosphorus Removal on Biological Nutrient Removal Systems -- 189 -- Process Selection for Combined Nitrogen and Phosphorus Removal -- 192 -- Benefits from Converting to Biological-Nutrient-Removal-Type Operation -- 196 -- Troubleshooting Biological Nutrient Removal Plants -- 202 -- Chapter 6 Models for Nutrient Removal -- History and Development of Models for Biological Nutrient Removal -- 227 -- Description of Models -- 228 -- Use of Simulators for Plant Operation -- 230 -- Chapter 7 Sludge Bulking and Foaming -- Microscopic Examination -- 234 -- Filamentous Bulking -- 236 -- Process Control for Filamentous Bulking Problems -- 239 -- Chapter 8 Chemical Addition and Chemical Feed Control -- Carbon Supplementation for Denitrification -- 257 -- Volatile Fatty Acid Supplementation for Biological Phosphorus Removal -- 271 -- Alkalinity Supplementation -- 277 -- Phosphorus Precipitation -- 288 -- Chemical Feed System Design and Operational Considerations -- 309 -- Chapter 9 Sludge Fermentation -- Overview of Fermentation Processes -- 314 -- Primary Sludge Fermenter Configurations -- 322 -- Primary Sludge Fermentation Equipment Considerations -- 329 -- Return Activated Sludge Fermentation -- 333 -- Chapter 10 Solids Handling and Processing -- Issues and Concerns -- 351 -- Sludge Production -- 353 -- Nutrient Release -- 353 -- Estimating Recycle Loads -- 357 -- Eliminating or Minimizing -- Recycle Loads -- 360 -- Sidestream Management and Treatment -- 362 -- Formation of Struvite and Other Precipitates -- 376 -- Chapter 11 Laboratory Analyses -- Nitrogen -- 400 -- Phosphorus -- 411 -- Short-Chain Volatile Fatty Acid Analysis -- 415 -- Analytical Methods for Short-Chain Volatile Fatty Acid Measurement -- 416 -- Chapter 12 Optimization and Troubleshooting Techniques -- Process Evaluation -- 422 -- Sampling and Testing -- 422 -- Data Analysis and Interpretation -- 462 -- Optimization and Troubleshooting Guides -- 465 -- Chapter 13 Instrumentation and Automated Process Control -- Online Analyzers -- 506 -- Specific Analyzers -- 508 -- Process Parameters for Optimization and Automatic Control -- 521 -- Advanced Control -- 537 -- Supervisory Control and Data Acquisition System Requirements -- 541.