` Pamela Chelme‐Ayala and Mohamed Gamal El‐Din Department of Civil and Environmental Engineering University of Alberta, Edmonton, Canada April 23, 2010 Presentation Outline 1. Process Fundamentals 2. Application in Water Treatment 3. Application in Wastewater Treatment 4. Concluding Remarks WaterTech 2010 2 11.. PPrroocceessss FFuunnddaammeennttaallss WaterTech 2010 3 1. Process Fundamentals Ozone‐Based Process Non‐Ozone‐Based Processes Ozonation Ultraviolet light (UV)/H O 2 2 Ozone (O )/hydrogen 3 Vacuum UV peroxide (H O ) 2 2 O /UV TiO /hν 3 2 O /H O /UV Photo‐Fenton (UV/H O ) 3 2 2 2 2 Anodic Fenton (iron O / Titanium dioxide (TiO ) 3 2 electrode) WaterTech 2010 4 1. Process Fundamentals O ClO Cl MnO ‐ H O O ∙OH 2 2 2 4 2 2 3 E (V) 1.23 1.27 1.36 1.67 1.77 2.07 2.80 o Mechanisms +M M (Direct reaction, high selectivity) OX O 3 +I +M • OH M (Indirect reaction, AOP) OX WaterTech 2010 5 1. Process Fundamentals WaterTech 2010 6 1. Process Fundamentals WaterTech 2010 7 1. Process Fundamentals WaterTech 2010 8 1. Process Fundamentals Specific Kinetic Wastewater Pathway Treatment contaminant Regime Direct Odor AOP not Swine Manure Fast regime Ozone compounds recommended reaction Very slow Indirect AOP Petrochemical Benzoic acid regime Reaction recommended Very slow Indirect AOP Municipal Ammonia regime Reaction recommended Direct AOP not Textile Azoic dyes Fast regime Ozone recommended reaction WaterTech 2010 9 22.. AApppplliiccaattiioonn iinn WWaatteerr TTrreeaattmmeenntt WaterTech 2010 10
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