This lecture provides the knowledge and tools necessary to understand a range of environmental aqueous processes in natural waters (river, lake, ocean and so forth) and engineered waters (water and wastewater treatment systems). In the first 5 classes, students learn fundamentals in chemical reaction including thermodynamics and kinetics. The next 5 classes introduce specific reactions that occur in natural and engineered waters including acid-base, complexation and redox reactions. The last 5 classes provide some examples (e.g., nutrient cycles in watershed, disinfection in drinking water treatment, fate and behavior of organic contaminants, etc.) to which the aforementioned chemical theory can be applied in natural and engineered systems.
All over the world, the aquatic environment is expected to be the place which serve a good quality of water resource to human society and accommodate fruitful ecosystem and this can be achieved by properly managing and preserving water quality. This lecture aims to cultivate the ability of students, by using chemical reaction theory, to quantitatively assess the influence of human activities to the water quality and ecosystems including impact of wastewater discharge and climate changes to the water quality formation in watershed and transformation of water quality in treatment processes.
By the end of this course, students will be able to:
• Understand fundamental concept and theory that govern aqueous environmental processes including thermodynamics, kinetics and non-ideal system modeling.
• Understand a range of aqueous processes including acid-base equilibrium, oxidation-reduction reactions, elementary and complex reactions, mass balance and transport, multiphase reaction modelling (solid/water/air interface processes).
• Apply problem-solving algebraical, geometric and computational tools for the quantitative characterization and prediction of water quality composition in the engineered water and also natural waters.
• Understand the impact of human activities (e.g., wastewater discharge and climate change) to the water quality in river, lake, coastal and oceanic waters
Thermodynamics, kinetics, acid-base, complexation, nutrient, water treatment, chlorine disinfection
|Intercultural skills||Communication skills||Specialist skills||Critical thinking skills||Practical and/or problem-solving skills|
A small quiz and homework (report) will be given every time in the class.
|Course schedule||Required learning|
|Class 1||Introductory matters (1)||To understand the significance of water chemistry in water and environmental engineering (water and wastewater treatment)|
|Class 2||Introductory matters (2)||Understand overlapping neighborhoods of water chemistry and units used in this field.|
|Class 3||The thermodynamic basis for equilibrium||Understand reaction and energy relationship.|
|Class 4||Characterization of ideal and non-ideal systems||Understand activity-concentration relationship and effect of ionic strength on the relationship.|
|Class 5||Fundamentals of chemical kinetics||Understand expression and solving technique of elemental and multiple kinetic reactions.|
|Class 6||Acid-base reaction chemistry||Understand the relationships between pH and acid dissociation equilibrium.|
|Class 7||Carbonate chemistry (1)||Understand the relationship among carbonate, alkalinity and pH.|
|Class 8||Carbonate chemistry (2)||Understand the carbonate equilibrium and speciation in the open and closed systems.|
|Class 9||Metal and complexation reaction||Understand mechanism(s) of metal and ligand coordination.|
|Class 10||Solid phase reaction and solubility||Understand precipitation, dissolution and adsorption reactions in solid-water interface.|
|Class 11||Redox Equilibra and kinetics (1)||Understand expression and reaction mechanism of redox reaction including the Nernst equation.|
|Class 12||Redox Equilibra and kinetics (2)||To calculate dominant chemical species in a range of waters based on the relationship between redox potential and pH.|
|Class 13||Water chemistry in drinking water treatment process (chlorine disinfection etc)||Understand pH dependency of chlorine reaction and formation of disinfection by-product.|
|Class 14||Water chemistry in wastewater treatment process (biological reaction and dissolved oxygen etc)||Understand a range of reactions governing chemistry of dissolved oxygen which is inevitable for biological respiration.|
|Class 15||Water chemistry in natural waters (nutrient cycle etc)||Understand chemical behavior and cycles of nutrients (nitrogen and phosphorous) in aqueous environment.|
Water Chemistry: An Introduction to the Chemistry of Natural and Engineered Aquatic Systems, Oxford Univ Pr, 2011
- Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters, 3rd Edition by Werner Stumm, James J. Morgan, Wiley, 1995
- Principles and Applications of Aquatic Chemistry by François M. M. Morel, Janet G. Hering, Wiley, 1993
Assessment of this lecture is provided according to following criteria: 20% for quiz in the end of lecture, 40% for report and 40% for final examination (100% in total).