Index
Nitrification-denitrification tank 245
Nitrifying bacteria 61,205, 224
Nitrifying biofilm plants 224
Nitrifying biomass 198
Nitrite 49, 177
Nitrobacter 57, 207, 225
Nitrogen 48, 229
Nitrogen compounds 195
Nitrogen gas 254
Nitrogen gas bubbles 254
Nitrogen gas, settling tanks 248
Nitrogen removal 62, 230
Nitrosomonas 57, 199,207,225
Nocardia 57
Non-competitive reversible
inhibition 74
Non-diffusible 182
Non-diffusible matter 184
North America 229
Nutrient 195
Nutrients 70
denitrification 89
in domestic wastewater 29
0
Observed yield constant 67, 69
Operational cycle 212, 219
Optimal design 225
Optimal operation 221
Optimal pH 222
Optimization of plant operation 261
Optimizing operation 222
Optimum C/N ratio 252
Order of reaction 176
Organic matter 39
easily degradable 43
slowly degradable 43
very easily degradable 44
Organic matter in domestic
wastewater 28
Organic phosphates 311
Organic surface loading rate 166
Organic volumetric loading rate 173
Organics in wastewater 39
380
Orthophosphate 49, 311
Oxidant 157
Oxidation ditches 126, 129
Oxygen 177, 182
saturation constant 72
Oxygen consumption 176,257
Oxygen consumption rate 51
Oxygen limited nitrification 201
Oxygen saving 243
Oxygen uptake rate (OUR) 262
p
Paddle stirring 254
Panduro 55
Partial penetration 149, 234
Partially penetrated biological film 154
Particle adsorption 183
Particulate organic matter 182
Pathogenic organisms 55
Peclet number 241
Penetration 158
Peripheral speed 175
pH 195,258,270
pH dependency 73
pH-inhibition 203
Phase length 261
Phases 188
Phenol 65
Phosphate crystallization 314
Phosphorus 49, 229
adsorption 330
Phosphorus accumulating bacteria
nitrate 99
reaction rate constant 99
Phosphorus binding in soil 330, 345
Phosphorus removal
design 337
mass balances 311
treatment plants 332
Plant alternatives 241
Plant designs 241
Plant growth 195
Plant types 241
for denitrification 241