Activated Sludge Design: secondary clarifier
chem P total P 02 05 avg metric to extended aeration peak metric
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 max | value min |
|---|---|---|---|---|---|---|
| secondary clarifier | chem P total P 02 05 avg metric | Chemical P addition (Total P = 0.2-0.5 mg/L) - avg overflow rate metric | Settling for effluent P after chemical addition | m³/m²·d | 20 | 12 |
| secondary clarifier | chem P total P 1 avg | Chemical P addition (Total P = 1 mg/L) - avg overflow rate | Settling for effluent P after chemical addition | gal/ft²·d | 600 | 400 |
| secondary clarifier | chem P total P 1 avg metric | Chemical P addition (Total P = 1 mg/L) - avg overflow rate metric | Settling for effluent P after chemical addition | m³/m²·d | 24 | 16 |
| secondary clarifier | chem P total P 2 avg | Chemical P addition (Total P = 2 mg/L) - avg overflow rate | Settling for effluent P after chemical addition | gal/ft²·d | 800 | 600 |
| secondary clarifier | chem P total P 2 avg metric | Chemical P addition (Total P = 2 mg/L) - avg overflow rate metric | Settling for effluent P after chemical addition | m³/m²·d | 32 | 24 |
| secondary clarifier | extended aeration avg | Extended aeration - avg overflow rate | Settling following extended aeration | gal/ft²·d | 400 | 200 |
| secondary clarifier | extended aeration avg metric | Extended aeration - avg overflow rate metric | Settling following extended aeration | m³/m²·d | 16 | 8 |
| secondary clarifier | extended aeration depth | Extended aeration - side-water depth | Settling following extended aeration | m | 5.5 | 4 |
| secondary clarifier | extended aeration peak | Extended aeration - peak overflow rate | Settling following extended aeration | gal/ft²·d | 800 | 600 |
| secondary clarifier | extended aeration peak metric | Extended aeration - peak overflow rate metric | Settling following extended aeration | m³/m²·d | 32 | 24 |
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