Biological Nutrient Removal 223

10.1 Introduction 223

10.2 Biological Nitrogen Removal 227

10.2.1 The Nitrogen Cycle and the Technical Removal Process 227

10.2.2 Nitrification 228

10.2.2.1 Nitrifying Bacteria and Stoichiometry 228

10.2.2.2 Stoichiometry and Kinetics of Nitrification 231

10.2.2.3 Parameters Influencing Nitrification 235

10.2.3 Denitrification 237

10.2.3.1 Denitrifying Bacteria and Stoichiometry 237

10.2.3.2 Stoichiometry and Kinetics of Denitrification 239

10.2.3.3 Parameters Influencing Denitrification 240

10.2.4 Nitrite Accumulation During Nitrification 242

10.2.5 New Microbial Processes for Nitrogen Removal 243

10.3 Biological Phosphorus Removal 244

10.3.1 Enhanced Biological Phosphorus Removal 244

10.3.2 Kinetic Model for Biological Phosphorus Removal 245

10.3.2.1 Preliminary Remarks 245

10.3.2.2 Anaerobic Zone 246

10.3.2.3 Aerobic Zone 247

10.3.3 Results of a Batch Experiment 248

10.3.4 Parameters Affecting Biological Phosphorus Removal 249

10.4 Biological Nutrient Removal Processes 250

10.4.1 Preliminary Remarks 250

10.4.2 Nitrogen Removal Processes 250

10.4.3 Chemical and Biological Phosphorus Removal 252

10.4.4 Processes for Nitrogen and Phosphorus Removal 253

10.4.4.1 Different Levels of Performance 253

10.4.4.2 WWTP Wa├čmannsdorf 255

10.4.4.3 Membrane Bioreactors (MBR) 257

10.5 Phosphorus and Nitrogen Recycle 257

10.5.1 Recycling of Phosphorus 257

10.5.2 Recycling of Nitrogen 258 Problems 259 References 262

0 0

Post a comment