Attached Growth Design: trickling filter
tf organic loading high rate rock to tf packing river rock bulk density
Attached growth biological treatment design parameters — trickling filter (low rate, high rate, partial BOD, nitrification), TFSC, TFAS, IFAS, MBBR carrier properties and removal/volumetric fluxes, and BAF volumetric loadings, oxygen transfer, denitrification loadings, and backwash rates. Source: Metcalf & Eddy Wastewater Engineering 5th Ed., Chapter 9.
| process type | parameter id | parameter name | unit | value max | value min |
|---|---|---|---|---|---|
| trickling filter | tf organic loading high rate rock | Organic loading - high rate rock | kg BOD/m³·d | 1.6 | 0.6 |
| trickling filter | tf organic loading low rate | Organic loading - low rate | kg BOD/m³·d | 0.3 | 0.08 |
| trickling filter | tf organic loading nit | Organic loading - BOD removal and nitrification | kg BOD/m³·d | 0.4 | 0.08 |
| trickling filter | tf organic loading partial | Organic loading - partial BOD removal | kg BOD/m³·d | 3.5 | 1.6 |
| trickling filter | tf packing crossflow specific surface high | Plastic cross-flow packing specific surface area (high) | m²/m³ | — | 223 |
| trickling filter | tf packing crossflow specific surface low | Plastic cross-flow packing specific surface area (low) | m²/m³ | — | 100 |
| trickling filter | tf packing crossflow specific surface mid | Plastic cross-flow packing specific surface area (mid) | m²/m³ | — | 138 |
| trickling filter | tf packing plastic random large specific surface | Plastic random packing (18.5 cm) specific surface area | m²/m³ | — | 98 |
| trickling filter | tf packing plastic random small specific surface | Plastic random packing (9 cm) specific surface area | m²/m³ | — | 125 |
| trickling filter | tf packing river rock bulk density | River rock bulk density | kg/m³ | 1,300 | 1,000 |
What else is in Engineering Database
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators