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A computational fluid dynamic and experimental study of an ozone contactor
T Huang1, C J Brouckaert, M Docrat
1Pollution Research Group, School of Chemical Engineering, University of Natal, Durban, South Africa. huangt@nu.ac.za
Summary
A computational fluid dynamic model of an ozone contactor was verified using tracer tests. This study optimizes disinfection efficiency in water treatment by simulating gas injection effects.
Area of Science:
- Environmental Engineering
- Fluid Dynamics
- Water Treatment Technology
Background:
- Ozone contacting chambers are crucial for water disinfection.
- Optimizing their efficiency is vital for public health and water quality.
- Computational modeling offers a powerful tool for understanding and improving these systems.
Purpose of the Study:
- To develop and verify a computational fluid dynamic (CFD) model of an ozone contacting chamber.
- To investigate the impact of gas injection on the chamber's performance.
- To optimize the control and disinfection efficiency of the water treatment contactor.
Main Methods:
- A CFD model was established for the ozone contacting chamber at Umgeni Water Wiggins Waterworks.
- The model's accuracy was verified using experimental tracer tests.
- Gas injection effects were simulated by adjusting turbulent intensity at the reactor inlet.
Main Results:
- The CFD model accurately predicted experimental tracer responses.
- Simulations closely matched real-world performance, confirming model validity.
- The study provides a validated tool for further optimization.
Conclusions:
- The validated CFD model is a reliable tool for assessing ozone contacting chamber performance.
- This approach can guide improvements in disinfection efficiency and operational control.
- The findings contribute to enhanced water treatment strategies.