Activated Sludge Design: kinetic coefficients
b NH4 to mu max NO2
Activated sludge process design data from Metcalf & Eddy 5th Ed. — biokinetic coefficients (mu_max, Ks, Y, b, fd, Kn) and Arrhenius theta correction factors for COD oxidation, nitritation (Nitrosomonas), and nitratation (Nitrobacter); minimum SRT ranges by treatment goal; activated sludge process design parameters (SRT, F/M, volumetric loading, MLSS, HRT) for 11 process variants including conventional plug flow, complete mix, extended aeration, oxidation ditch, SBR, and high-purity oxygen; SDNR denitrification coefficients (b_0, b_1) vs. rbCOD percentage; secondary clarifier design criteria (surface overflow rate, solids loading, side-water depth) for air-activated sludge, extended aeration, BNR, and chemical P removal; MBR membrane flux vs. temperature (low and high MLSS); MBR manufacturer membrane product specs (GE Zenon, Kubota, Mitsubishi, Siemens, Huber); BNR process design parameters for A/O, A2/O, Modified Bardenpho, UCT, VIP, SBR, and Phostrip; biological P removal substrate ratios (VFA:P, rbCOD:P, BOD:P, COD:P); aerobic and anoxic selector zone F/M and O2 transfer design criteria; and typical domestic wastewater influent characterization
| data type | key name | parameter name | process type | unit | value typical |
|---|---|---|---|---|---|
| kinetic coefficients | b NH4 | Endogenous decay coefficient - NH4 oxidation | NH4 oxidation (Nitrosomonas) | g VSS/g VSS·d | 0.17 |
| kinetic coefficients | b NO2 | Endogenous decay coefficient - NO2 oxidation | NO2 oxidation (Nitrobacter) | g VSS/g VSS·d | 0.17 |
| kinetic coefficients | fd COD | Non-biodegradable fraction of endogenous residue - COD oxidation | COD oxidation | dimensionless | 0.15 |
| kinetic coefficients | fd NH4 | Non-biodegradable fraction of endogenous residue - NH4 oxidation | NH4 oxidation (Nitrosomonas) | dimensionless | 0.15 |
| kinetic coefficients | fd NO2 | Non-biodegradable fraction of endogenous residue - NO2 oxidation | NO2 oxidation (Nitrobacter) | dimensionless | 0.15 |
| kinetic coefficients | mu max COD | Maximum specific growth rate - COD oxidation | COD oxidation | g VSS/g VSS·d | 6 |
| kinetic coefficients | mu max NH4 | Maximum specific growth rate - NH4 oxidation | NH4 oxidation (Nitrosomonas) | g VSS/g VSS·d | 0.9 |
| kinetic coefficients | mu max NO2 | Maximum specific growth rate - NO2 oxidation | NO2 oxidation (Nitrobacter) | g VSS/g VSS·d | 1 |
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