Surface water-quality modeling.

PART I: Completely Mixed Systems.
Lecture 1.- Introduction.
Lecture 2.- Reaction Kinetics.
Lecture 3.- Mass Balance, Steady-State Solution, and Response Time.
Lecture 4.- Particular Solutions.
Lecture 5.- Feedforward Systems of Reactors.
Lecture 6.- Feedback Systems of Reactors.
Lecture 7.- Computer Methods: Well-Mixed Reactors.
PART II: Incompletely Mixed Systems.
Lecture 8.- Diffusion.
Lecture 9.- Distributed Systems (Steady-State).
Lecture 10.- Distributed Systems (Time-Variable).
Lecture 11.- Control-Volume Approach: Steady-State Solutions.
Lecture 12.- Simple Time-Variable Solutions.
Lecture 13.- Advanced Time-Variable Solutions.
PART III: Water-Quality Environments.
Lecture 14.- Rivers and Streams.
Lecture 15.- Estuaries.
Lecture 16.- Lakes and Impoundments.
Lecture 17.- Sediments.
Lecture 18.- The "Modeling". - Environment.
PART IV: Dissolved Oxygen and Pathogens.
Lecture 19.- BOD and Oxygen Saturation.
Lecture 20.- Gas Transfer and Oxygen Reaeration.
Lecture 21.- Streeter-Phelps: Point Sources.
Lecture 22.- Streeter-Phelps: Distributed Sources.
Lecture 23.- Nitrogen.
Lecture 24.- Photosynthesis/Respiration.
Lecture 25.- Sediment Oxygen Demand.
Lecture 26.- Computer Methods.
Lecture 27.- Pathogens.
PART V: Eutrophication and Temperature.
Lecture 28.- The Eutrophication Problem and Nutrients.
Lecture 29.- Phosphorus Loading Concept.
Lecture 30.- Heat Budgets.
Lecture 31.- Thermal Stratification.
Lecture 32.- Microbe/Substrate Modeling.
Lecture 33.- Plant Growth and Nonpredatory Losses.
Lecture 34.- Predator-Prey and Nutrient/Food-Chain Interactions.
Lecture 35.- Nutrient/Food-Chain Modeling.
Lecture 36.- Eutrophication in Flowing Waters.
PART VI Chemistry.
Lecture 37.- Equilibrium Chemistry.
Lecture 38.- Coupling Equilibrium Chemistry and Mass Balance.
Lecture 39.- pH Modeling.
PART VII Toxics.
Lecture 40.- Introduction to Toxic-Substance Modeling.
Lecture 41.- Mass-Transfer Mechanisms: Sorption and Volatilization.
Lecture 42.- Reaction Mechanisms: Photolysis, Hydrolysis, and Biodegradation.
Lecture 43.- Radionuclides and Metals.
Lecture 44.- Toxicant Modeling in Flowing Waters.
Lecture 45.- Toxicant/Food-Chain Interactions.
--Appendixes A. Conversion Factors--B. Oxygen Solubility--C. Water Properties--D. Chemical Elements--E. Numerical Methods Primer--F. Bessel Functions--G. Error Function and Complement

National and international interest in finding rational and economical approaches to water-quality management is at an all-time high. Insightful application of mathematical models, attention to their underlying assumptions, and practical sampling and statistical tools are essential to maximize a successful approach to water-quality modeling. Chapra has organized this user-friendly text in a lecture format to engage students who want to assimilate information in manageable units. Comical examples and literary quotes interspersed throughout the text motivate readers to view the material in the proper context. Coverage includes the necessary issues of surface water modeling, such as reaction kinetics, mixed versus nonmixed systems, and a variety of possible contaminants and indicators; environments commonly encountered in water-quality modeling; model calibration, verification, and sensitivity analysis; and major water-quality-modeling problems. Most formulations and techniques are accompanied by an explanation of their origin and/or theoretical basis. Although the book points toward numerical, computer-oriented applications, strong use is made of analytical solutions. In addition, the text includes extensive worked examples that relate theory to applications and illustrate the mechanics and subtleties of the computations.