Print this page An Introduction to Secondary Wastewater Treatment
J. Paul Guyer, P.E., R.A., Fellow ASCE, Fellow AEI
Course Outline
1. General considerations
2. Trickling filter plants
3. Activated sludge plants
4. Wastewater treatment ponds
5. Sewage treatment in hot climates
6. Special considerations for cold climates
7. References
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.
Learning Objective
At the conclusion of this course, the student will:
- Learn design basis and criteria for trickling filter plants;
- Learn the different dosing intervals for different classifications of trickling filters;
- Learn the biochemical oxygen demand (BOD) efficiency of different classifications of trickling filters;
- Learn how recirculation increases BOD removal efficiency in high rate trickling filter processes;
- Learn the four common flow diagrams for single stage trickling filter plants;
- Learn the four common flow diagrams for two stage trickling filter plants;
- Learn why loading rate is the key design factor whether the surface application is continuous, intermittent, constant or varying rate;
- Learn the importance of ventilation in providing aerobic conditions for effective treatment;
- Learn how performance of trickling filters will be affected by temperature changes in the wastewater and filter films;
- Learn about design formulas for determining BOD removal efficiencies for single and two stage trickling filters;
- Learn the purpose of secondary sedimentation tanks;
- Learn about the conventional plug-flow activated sludge process;
- Learn about the step aeration activated sludge process;
- Learn about the contact stabilization activated sludge process;
- Learn about the completely-mixed activated sludge process;
- Learn about the closed-loop reactor (oxidation ditch) extended aeration process;
- Learn the classifications of wastewater treatment ponds;
- Learn about shallow and aerated aerobic ponds;
- Learn about aerobic-anaerobic wastewater treatment ponds; and
- Learn about facultative wastewater treatment ponds.
Intended Audience
This course is intended for civil, environmental and mechanical engineers, technicians and construction professionals wanting an introduction to the processes, equipment and design considerations for the third phase of wastewater treatment….secondary treatment.
Benefit for Attendee
This course will give civil, environmental and mechanical engineers, technicians and construction professionals an introduction to the processes, equipment and design considerations for primary treatment of wastewater.
Course Introduction
This is an introduction to design parameters and methods, equipment and processes for the secondary treatment of wastewater.
About Course Author
Paul Guyer is a registered mechanical engineer, civil engineer, fire protection engineer and architect with over 35 years experience in the design of buildings and related infrastructure. For an additional 9 years he was a senior-level advisor to the California Legislature on infrastructure and capital outlay issues. He has designed and supervised the design of hundreds of construction projects requiring the preparation of detailed working drawings and specifications for federal, state and local public agencies and private companies. He is a graduate of Stanford University and has held numerous national, state and local positions with the American Society of Civil Engineers and National Society of Professional Engineers.
Course Content
The course content is contained in the following PDF file:
An Introduction to Secondary Wastewater Treatment
Please click on the above underlined hypertext to view, download or print the document for your study. Because of the large file size, we recommend that you first save the file to your computer by right clicking the mouse and choosing "Save Target As ...", and then open the file in Adobe Acrobat Reader. If you still experience any difficulty in downloading or opening this file, you may need to close some applications or reboot your computer to free up some memory.
Course Summary
This course will give you an introduction to the processes, equipment and design considerations for the secondary treatment of wastewater streams.
Quiz
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.
DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.
