Wastewater Design: fm_ratio_mbr to oil_grease_typical
Wastewater and leachate treatment design criteria — process design parameters (HRT, SRT, MLSS, F/M, loading rates, membrane flux) and removal efficiencies (BOD, TSS, TN, TP) for activated sludge, SBR, MBR, oxidation ditch, trickling filter, aerated lagoon, and facultative lagoon processes, covering both municipal wastewater and landfill leachate applications
| parameter id | category | design basis | notes | parameter name | subcategory | unit | value max | value min | value typical |
|---|---|---|---|---|---|---|---|---|---|
| fm_ratio_mbr | process_design | Metcalf & Eddy 5e | Low F/M due to high MLSS. Typically <0.1 for stable operation. | F/M ratio - MBR | mbr | kg BOD/kg MLVSS/d | 0.2 | 0.05 | 0.1 |
| hrt_extended | activated_sludge | Metcalf & Eddy 5th Ed Table 8-14 | Long HRT due to low F/M | HRT extended aeration | extended_aeration | hr | 36 | 18 | 24 |
| hrt_sbr | process_design | Metcalf & Eddy 5e Table 8-21 | Fill+react+settle+decant cycle total time. Longer for nitrification/denitrification. | Hydraulic retention time - SBR | sbr | hours | 12 | 4 | 6 |
| mlss_mbr | process_design | Metcalf & Eddy 5e | Key MBR advantage — membrane prevents solids washout. | MLSS concentration - MBR | mbr | mg/L | 15,000 | 8,000 | 10,000 |
| oil_grease_typical | wastewater_characteristics | Metcalf & Eddy 5th Ed Table 3-15 | Includes fats and fatty acids | Typical oil and grease concentration | organic | mg/L | 100 | 50 | 80 |
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