| Abstract |
| This study used computational fluid dynamics (CFD) analysis and tracer tests to examine water flow and the reactor in the integrated sedimentation and dissolved air flotation (SeDAF) process for an advanced wastewater treatment plant. Two CFD models were simulated: the original model with raw water and microbubble distribution flow rates of 100 and 15 ㎥/d, andthe alternative model with flow rates of 200 and 15 ㎥/d, respectively. CFD analysis of the original model yielded an average flow rate of 0.014 kg/s for each branch of the four perforated distribution pipes, with a standard deviation (S.D.) of 0.00305, indicating successful and reliable simulations. In the alternative model simulation, the average flow rate for each branch of the four perforated distribution pipes was 0.0518 kg/s, with an S.D. of 0.00604. The Morrill index ranged from 3.4 to 9.0, indicating the plug flow reactor characteristics. These simulations for both the original and alternative models confirmed that the design parameters for distribution pipes, ensuring even microbubble supply, and perforated drainpipes, facilitating treated water withdrawal, were appropriate for the integrated SeDAF process. The tracer test furtherconfirmed the plug flow characteristic of the SeDAF reaction tank. |
|
|
| Key Words |
| CFD, Flow characteristic, Integrated sedimentation and flotation, Optimization, Tracer, 일체형 침전부상공정, 전산유체해석, 추적자, 최적화, 흐름특성 |
|
|
|
|
|
PDF