Chapter 4: Activated Sludge Modelling - IqTMA-UVa
Chapter 4: Activated Sludge Modelling - IqTMA-UVa Chapter 4: Activated Sludge Modelling - IqTMA-UVa
Total mixed liquor VSS (MLVSS)MLVSS = active biomass + inert nbVSS = (X) + (X i )X i = X 0,i (nbVSS introduced) + X d (concentration of cell debris in thereactor)Q 0 , X 0,iQ r , X r,iX iQ e , X e,iQ w , X w,iMLSS = Mixed Liquor TSS30
Solids production rateP MLVSS = r g V (active X) + r d V (debris) + QX 0,I (nbVSS) = [kgVSS/d]r g = µX = X/SRT with X= (SRT/HRT)Y(S 0 – S)/(1+ k d SRT)r d = cell debris production rate = f d k d XQX 0,i = amount of nbVSS introducedP MLVSS = QY(S 0 – S)/(1 + k d SRT) + f d k d XV + QX 0,iRemember the solid fraction in made of active biomass, cell debris andan inert VSS introduced from the influent. The last 2 fractions willimpact process efficiency because larger settler and reactor tank willbe needed.During wastewater treatment, one must also add the solid fraction dueto inorganics.31
- Page 4 and 5: Solving the Exponential ModelBy sol
- Page 6 and 7: Endogenous decayIf part of the biom
- Page 8 and 9: Continuous Treatment in wellmixed r
- Page 10 and 11: ExerciseThe growth of a strain of L
- 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 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 62 and 63: 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
Total mixed liquor VSS (MLVSS)MLVSS = active biomass + inert nbVSS = (X) + (X i )X i = X 0,i (nbVSS introduced) + X d (concentration of cell debris in thereactor)Q 0 , X 0,iQ r , X r,iX iQ e , X e,iQ w , X w,iMLSS = Mixed Liquor TSS30
Change language