Pamela Chelme-Ayala and Mohamed Gamal El-Din

36 Pages·2010·1.36 MB·English

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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
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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)
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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
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1. Process Fundamentals
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1. Process Fundamentals
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1. Process Fundamentals
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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
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