UASB Reactor Volume Calculator
Posted by Dinesh onUse the simple anaerobic wastewater treatment calculator tool to calculate the volume of UASB reactor.
Design Procedure for UASB Reactor
The UASB reactor can be designed as circular or rectangular. Modular design can be preferred when the volume of reactor exceeds about 400 m3. It is necessary to select proper range of operating parameters for design, such as OLR, SLR, superficial liquid upflow velocity (referred as liquid upflow velocity), and HRT.
| Category of wastewater | COD concentration (mg/L) | OLR (Kg COD/m3.d) | SLR (Kg COD/ kg VSS.d) | HRT (Hours) | Liquid Upflow Velocity (m/h) | Expected Efficiency (%) |
|---|---|---|---|---|---|---|
| Low strength | Up to 750 | 1.0 - 3.0 | 0.1 - 0.3 | 6 - 18 | 0.25 - 0.7 | 70 –75 |
| Medium strength | 750 - 3000 | 2.0 - 5.0 | 0.2 - 0.5 | 6 - 24 | 0.25 - 0.7 | 80 - 90 |
| High strength | 3000 - 10,000 | 5.0 - 10.0 | 0.2 - 0.6 | 6 - 24 | 0.15 - 0.7 | 75 - 85 |
| Very high strength | > 10,000 | 5.0 - 15.0 | 0.2 - 1.0 | > 24 | --- | 65 - 75 |
UASB Reactor Volume Calculation
Formula:
Volume = (Flow Rate x COD concentration) / OLR
where,- COD - chemical oxygen demand
- OLR - organic loading rates