Chapter 4: Activated Sludge Modelling - IqTMA-UVa
Chapter 4: Activated Sludge Modelling - IqTMA-UVa Chapter 4: Activated Sludge Modelling - IqTMA-UVa
Processes for BiologicalPhosphorous Removal• Modified UCT process offers ahigher protection of theAnaerobic tank against thepernicious effects of Nitrate• More complex operationd) PhoStrip: Combined biological and chemical P removal• No N removal• P is released from Biomass in ananaerobic gravity settler receivingRAS• Overflow from the settler is treatedchemically with alum, lime or Fe salt•The RAS is returned to the aerobicstage62
Processes for BiologicalPhosphorous Removal☺ PhoStrip can be easily incorporated in existing AS plants☺ It can achieve [Ortophosphate] < 1 mg/L☺ Less dependent on bsCOD☻ High operation cost due to chemical use.☻ High maintenance when using LimeSRT 5-20 d; HRT anae8-12 h; HRT aer4-10 hE) Modified Bardenpho• The second anoxic stageprovides additional nitrificationRAS free of Nitrates• 3-5 mg/TN• Less efficient for P removal• Large Tank Volumes63
- Page 12 and 13: Maximum Dilution Rate: DmaxCell con
- Page 14 and 15: Influence of nbVSSAn amount of non
- Page 16 and 17: Influence of nbVSSFraction of activ
- Page 18 and 19: Biomass retentionCell washout is mo
- Page 20 and 21: AerationSurfaceDiffused$$$ Aeration
- Page 22 and 23: Many configuration possible!The A2/
- Page 24 and 25: OverviewApplicationCostsAdvantagesD
- Page 26 and 27: Solid Retention Time (SRT)The SRT i
- Page 28 and 29: Expression of SBiomass balance:VdX/
- Page 30 and 31: Total mixed liquor VSS (MLVSS)MLVSS
- Page 32 and 33: ..and if we have nitrification??P M
- Page 34 and 35: Processes for BOD Removal andNitrif
- Page 36 and 37: Processes for BOD Removal andNitrif
- Page 38 and 39: Processes for BOD Removal andNitrif
- Page 40 and 41: Processes for BOD Removal andNitrif
- Page 42 and 43: Processes for BOD Removal andNitrif
- Page 44 and 45: Processes for Biological NitrogenRe
- Page 46 and 47: Processes for Biological NitrogenRe
- Page 48 and 49: Processes for Biological NitrogenRe
- Page 50 and 51: Processes for Biological NitrogenRe
- Page 52 and 53: Processes for Biological NitrogenRe
- Page 54 and 55: Processes for Biological NitrogenRe
- Page 56 and 57: Processes for Biological NitrogenRe
- Page 58 and 59: Processes for BiologicalPhosphorous
- Page 60 and 61: Processes for BiologicalPhosphorous
- Page 64 and 65: Activated Sludge ModelingASM nº164
- Page 66 and 67: Biological reaction kineticsMicroor
- Page 68 and 69: Model presentationMASS BALANCES:•
- Page 70 and 71: Components in ASM1Organic matter ch
- Page 72 and 73: Components in ASM172
- Page 74 and 75: Processes in ASM1Biological process
- Page 76 and 77: Organic Matter BiodegradationORGANI
- Page 78 and 79: Organic matter biodegradationAerobi
- Page 80 and 81: Organic matter biodegradationSlowly
- Page 82 and 83: NitrificationNitrification Kinetics
- Page 84 and 85: NitrificationAutotrophic biomass de
- Page 86 and 87: NitrificationSoluble organic N ammo
- Page 88 and 89: DenitrificationHeterotrophic Biomas
- Page 90 and 91: Stoichiometric Matrix90
- Page 92 and 93: Conclusions• The Model works at c
- Page 94 and 95: In BioWin3Bioreactor Brush aeratorS
Processes for BiologicalPhosphorous Removal• Modified UCT process offers ahigher protection of theAnaerobic tank against thepernicious effects of Nitrate• More complex operationd) PhoStrip: Combined biological and chemical P removal• No N removal• P is released from Biomass in ananaerobic gravity settler receivingRAS• Overflow from the settler is treatedchemically with alum, lime or Fe salt•The RAS is returned to the aerobicstage62
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