Time Schedule:
H. David Stensel
CEE 541
Seattle Campus
Basic reactions, design principles, current design models, and operational considerations for biological treatment systems used in environmental engineering. Applications include activated sludge design and optimization, fixed film reactors, nitrification, nitrogen removal, phosphorus removal, anaerobic treatment, and toxic organics removal. Prerequisite: CEE 540 and CEE 482 or equivalent.
Class description
DATE TOPIC Reading Assign. Week 1 Introduction/Activated Sludge Mass Balances Jan. 7 Introduction Notes Jan. 9 Substrate Utilization/oxygen consumption, growth p563-571, 579-588 Jan. 11 Modeling suspended growth A.S. for soluble COD removal p588-592
Week 2 Completely Mixed Activated Sludge Design Jan. 14 Activated sludge design p592-602, 680-684 Jan. 16 Activated sludge processes p741-749 Jan. 18 Nitrification and SRT selection p611-616, 706-720
Week 3 Activated Sludge Staged and Batch Processes Jan. 21 No Class Scheduled – Martin Luther King Day Jan. 23 Staged process design pp734-738, notes Jan. 25 Sequence Batch Reactor Design p720-734
Week 4 Activated sludge clarification, Nitrogen Removal Jan. 28 Sludge settling problems and selectors p694-703 Jan. 30 Secondary clarification design, state point analysis p686-688, 820-840, Feb. 1 Nitrogen removal p616-623
Week 5 Activated sludge nitrogen and phosphorus removal Feb. 4 Nitrogen removal designs p749-796 Feb. 6 Enhanced biological P removal p623-629, Feb. 8 EBPR processes p799-816
Week 6 BioWin Model Feb. 11 IWA Model, BioWin Program p859-865, Notes Feb. 13 Wastewater Characterization for BioWin Notes Feb. 15 Midterm Exam
Week 7 Test, Membrane Bioreactors, Aerobic Fixed Film Process Feb. 18 No class – Presidents Holiday Feb. 20 Membrane Bioreactors p854-859, notes Feb. 22 Aerobic Fixed Film Processes p602-607
Week 8 Aerobic Fixed Film Processes/Anaerobic Fundamentals Feb. 25 Biological Aerated Filters p957-971 Feb. 27 Hybrid processes p952-956 Feb. 29 Anaerobic process p629-635, 988-991
Week 9 Anaerobic Processes Mar. 3 Anaerobic Digestion p1505-1533 Mar. 5 Anaerobic suspended growth processes p996-1018 Mar. 7 Anaerobic Fixed film processes p1018-1027
Week 10 Other Processes Mar. 10 Aerobic Digrestion p1533-1546 Mar. 12 Denitrification Filtres Notes Mar. 14 Paper Review Presentations
Week 11 Mar. 19 Final Exam, Wednesday, 8:30 AM-10:20 AM
Student learning goals
• Objective 1: Understand concepts of the distribution of substrate utilization between that oxidized and that ending up as biomass on a COD basis.
• Objective 2: Understand the importance and use of solids retention time (SRT) in biological process design
• Objective 4: Be able to perform a mass balance to follow any specific component in a biological suspended growth process under steady state or dynamic conditions
• Objective 5: Design activated sludge systems for organics, nitrogen and phosphorus removal with conventional clarifiers or with membrane separation.
• Objective 12: Understand the design basis for key fixed film processes and the importance and effect of diffusion limitations in fixed film processes
• Objective 13: Design anaerobic digestion and other key anaerobic processes.
General method of instruction
Class lecture and class participation on design methodology Homework assignments Computer modeling
Recommended preparation
CEE540 or equivalent microbiology Basic course in environmental engineering Background in understanding mass balance procedures
Class assignments and grading
REading assignments and preclass Q/A Homework on design methods BioWin computer software assignment-team project Paper review and presentation -team project
Pre-class Prep 10% Homework 25% Midterm Exam 25% Process review paper 10% Final Exam 30%
