Modeling Ultraviolet (UV) Light Emitting Diode (LED) Energy Propagation in Reactor Vessels
Abstract
The United States Environmental Protection Agency (EPA) is concerned with both accidental and intentional releases of chemicals into waste streams. Certain chemicals may be detrimental to the effectiveness of municipal wastewater treatment plants. This can lead to reduced capability or costly damage to the plant. An Advanced Oxidation Process (AOP) is one method to pre-treat waste streams. This method uses ultraviolet (UV) energy and hydrogen peroxide to create hydroxyl radicals that can neutralize harmful chemicals. Recent advancements in Ultra Violet Light Emitting Diodes (UV LEDs) are making it possible to use this energy source instead of traditional UV energy sources. This research effort focuses on the modeling and simulation of UV LED energy sources for the purpose of providing the ability to predict the efficiency of different reactor vessel geometries. The model is used to evaluate the irradiance present at any point within a test reactor. When coupled with a suitable AOP production rate equation or pathogen kill rate equation, the model provides insight into tradeoffs when designing a UV reactor suitable for an AOP or pathogen extermination, respectively. Finally, simulated results are compared to measurements collected in actual laboratory experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 27, 2014
- Accession Number
- ADA600182
Entities
People
- John P. Richwine
Organizations
- Air Force Institute of Technology