UCF Process Model Calibration - Jimenez

Low fm sbr other parameters high fm washout procedure

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Low F/M SBR – other parameters High F/M Washout procedure Typical Simulation Study 32 Typical Simulation Study 33 Step 1: Physical data Process configuration Volumes Settler area/depth …..
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2/22/2013 12 Typical Simulation Study 34 Step 2: Operating data RAS rate WAS rate Recycles DO DO Temperatures ….. Typical Simulation Study 35 Step 3: Influent loading Flow Flow COD / COD / BOD BOD BOD /TKN TKN Alkalinity, pH ….. Step 4: Wastewater Characteristics COD fractions N and P N and P fractions fractions ….. Typical Simulation Study 36 Step 5: Kinetic parameters Step 5: Kinetic parameters Step 5: Kinetic parameters Step 5: Kinetic parameters Nitrification Rates Denitrification Rates …..
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2/22/2013 13 Typical Simulation Study 37 Have Have all the data? all the data? Simulate ! General approach is to calibrate model until predicted performance reasonably matches observed performance for calibration period Generally match trends for a number of observed plant parameters Achieve this by making reasonable model adjustments (experience based) Calibration Approach Proposed iterations to calibrate a BNR plant model based on GMP Model calibration typically is performed using a stepwise approach, typically consisting of the following steps: Mass balance and solids inventory Effluent quality (esp. nutrient removal) Process oxygen or aeration air demand 39 BIO-P CHEMICAL PRECIPITATION NITRIFICATION DENITRIFICATION OXYGEN TRANSFER Yes No Influent and recycle stream characterization: X U, ORG, INF , X U, ING, INF , WAS mass/load, effluent mass/load, X TSS, EFF Settling parameters: f ns Biokinetic parameters: Chemical dosing, Industrial input: Inerts Addition, Y OHO Hydrodynamics: Check flow distribution Settling parameters: v 0 , r hin , f ns , r floc Settling parameters: reactive settler, Q rec Influent and recycle stream characterization: S B Biokinetic parameters: Hydrolysis NUR/OUR tests; SND problem? Hydrodynamics: S O2 profile Influent and recycle stream characterization: Alkalinity Biokinetic parameters: Inhibition: µ ANO , b ANO , K O2, ANO , K NHx, ANO Specific OUR + nitrification rate tests Precipitation efficiency SLUDGE PRODUCTION CLARIFIER Simulation Yes No Yes No Yes No Yes No Yes No Influent and recycle stream characterization: S VFA, INF Biokinetic parameters: Hydrolysis, fermentation rates Yes No Mass transfer parameters Blower/motor efficiency Check data/flow meters Calibrated parameter set Stakeholder agreement In-tanks and effluent NH x -N, NO x -N MLSS/MLVSS in tanks and flows Effluent TSS SBH In-tanks and effluent NO x -N O 2 transfer characteristics Airflow rate Energy Effluent PO 4 –P and P tot Effluent PO 4 –P and P tot Rieger et al. (2012) IWA Guidelines for Activated Sludge Modeling. Step 1 Step 2 Step 3
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2/22/2013 14 Select simulation period – stable operation in important Model inputs include: Concentrations ( e.g.
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