Index
A
Acetic acid 177, 182, 234, 241, 243,
252,258
Achromobacter 57
Acid step, anaerobic processes 105
Acid-forming bacteria 101
Acidity production 270
Acinetobacter 57
Activated sludge 126, 204, 252
alternating process 252
biomass composition 71
definitions 120
design 134
post denitrification 252
recirculation 252
recycle rate 120
simultaneous nitrification - denitrification 252
sludge load 69
sludge mass 121
temperature 121
temperature variation 30
treatment efficiency 120
volumetric loading 120
Activated sludge plant 232
sludge mass balance 118
Activated sludge treatment plant 56,
113, 196,232,241
Active biomass 164
Adhesion 167, 180, 181, 215
Adsorption 61
Aerated filter 194
Aeration 179, 180
Aeration tank 198, 211
Aerobic heterotrophic removals 65
Aerobic sludge age 212, 219, 222
Aerobic sludge stabilization 215
Aerobic zone 268
Alcaligenes 57
Algae 56
Algae ponds 56
Alkalinity 49,195,203,204,249,258
Alkalinity production 270
Allowable loading 173
Allowable loads 175
Alternating operation 212, 213, 245
Alternating plant 261
Alternating plant type 245
Alternating process 245, 263
Aluminium, precipitant 315
Ammonia 48
Ammonia stripping 229
Ammonium 49,177,195
Ammonium limited nitrification 201
Anaerobic degradation, organic
matter 269
Anaerobic digestion 215
Anaerobic filter 293
Anaerobic filter plants, design 300
Anaerobic phosphorus tank 273
Anaerobic plants 286
design 295
disturbances 305
plant types 289
pretreatment 289
sludge load 298
technical data 297
volumetric load 296
Anaerobic processes 99, 101
acid step 100, 105
alkalinity 104
Environmental factors 107
inhibition 107,307
kinetics 104
nutrients 103
pH 107
process matrix 286, 287
reaction rate constants 108
temperature 107
Yield constants 102
Anaerobic sludge age 298
375