Includes bibliographical references and index.

Contents: Part I: Completely mixed systems: Introduction -- Reaction kinetics -- Mass balance, steady-state solution, and response time -- Particular solutions -- Feedforward systems of reactors -- Feedback systems of reactors -- Computer methods: well-mixed reactors -- Part II: Incompletely mixed systems: Diffusion -- Distributed systems (steady-stated) -- Distributed system (time-variable) -- Control-volume approach: steady-state solutions -- Simple time-variable solutions -- Advanced Time-variable solutions -- Part III: Water-quality environments -- Estuaries -- Lake and impoundments -- Sediments -- The "modeling" environment -- Part IV: Dissolved oxygen and pathogens: BOD and oxygen saturation -- Gas transfer and oxygen reaeration -- Steeter-phelps: point sources -- Streeter-phelps: distributed sources -- Nitrogen -- Photosynthesis/ respiration -- Sediment oxygen demand -- Computer methods -- Pathogens -- Part V: Eutrophication and temperature: The eutrophication problem and nutrients -- Phosphorus loading concept -- Heat budgets -- Thermal stratification -- Microbe/ substrate modeling -- Plants growth and nonpredatory losses -- Predator-prey and nutrient/ food-chain interactions -- Nutrient/ food-chain modeling -- Eutrophication in flowing waters -- Part VI: Chemistry: Equilibrium chemistry: Coupling equilibrium chemistry and mass balance -- pH modeling -- Part VII: Toxics: Introduction to toxic-substance modeling -- Mass-transfer mechanisms: sorting and volatilization -- Reaction mechanisms: photolysis, hydrolysis, and biodegradation -- Radionuclides and metals -- Toxicant modeling in flowing waters -- Toxicant/ food-chain interactions.