Master oxygen transfer principles, blower selection, and air system design for optimized biological treatment performance.

Course Description

Aeration is the heartbeat of biological treatment and the most energy consuming unit in wastewater treatment plants. Then, blower selection and air system design can make or break project applicability and process efficiency. This course gives engineers, operators, and designers the complete picture of how oxygen is transferred, consumed, and managed within aeration systems.
From BOD demand to Standard Oxygen Transfer Efficiency (SOTE) and Actual Oxygen Requirement (AOR), you’ll learn how to balance biology, air delivery, and power consumption. The course explores diffuser types, aeration grid layouts, blower power calculations, and correction factors like α, β, θ, and F to size your system accurately and avoid common pitfalls.
By combining theory, real-world rules of thumb, and practical design tips, this course equips you to work confidently on activated sludge systems, lagoons, MBRs, or aerated tanks—whether for new builds or upgrades.

Who Should Attend

Process Engineers | Mechanical Engineers | Wastewater Designers | Plant Operators | Aeration System Vendors | Environmental Engineers | Project Engineers | Technicians working in industrial and municipal treatment systems

Training Methodology

✔ Real equations explained with minimal math

✔ Diagrams, flowcharts, and correction tables

✔ Case-based learning: from undersized blowers to overdesigned pipes

✔ Designed by a seasoned wastewater engineer with real-world blower selection experience

Organizational Benefits

Reduce aeration energy costs with better blower and diffuser selection
Design systems with confidence using field-tested correction factors
Prevent underaeration, oxygen limitation, and blower overload
Make sense of supplier datasheets and optimize blower room planning
Evaluate upgrades like fine bubble systems or SOTE improvements

What You Will Learn

✔ How microorganisms use oxygen during BOD removal and nitrification

✔ How to convert biological demand into actual blower duty

✔ The relationship between AOR, SOTR, and SOTE

✔ How temperature, TDS, and water depth affect aeration efficiency

✔ Sizing rules: hp per air flow, hp per wastewater volume

✔ Piping limits for velocity, pressure loss, and noise

✔ Choosing between aeration systems: diffusers, jet aerators, surface aerators

✔ Best practices for blower selection and staging

Seminar Outline (Highlights)

Fundamentals of Biological Oxygen Demand • BOD to oxygen conversion • Nitrification oxygen requirements • Biomass yield and sludge generation
Oxygen Transfer Mechanics • SOTR vs. AOR • SOTE and how it's measured • Correction factors (α, β, θ, F, Ω) • Impact of bubble size, water depth, and diffuser placement
Aeration System Design • Suspended vs. attached systems • Grid layout and submergence depths • Fine vs. coarse bubble diffusers • Field OTR vs. theoretical OTR
Blower Design and Air Delivery • Blower sizing rules of thumb • Power requirements per flow and load • Discharge pressure and system pressure drop • Piping velocity limits and pressure classifications • Blower room layout tips

Practical Takeaways

✔ Sizing rules: hp per m³/h and hp per m³/d

✔ Air piping velocity tables

✔ Bubble efficiency charts (SOTE per ft)

✔ AOR/SOTR ratio correction worksheet

✔ Diffuser comparison guide

✔ Certificate of completion

✔ Email support post-course

Course FAQ

Q: Is this course beginner-friendly? 

A: Yes! The course uses simple language and visual tools, even for those with no prior experience.

Q: Do I need a calculator? 

A: No, it's not required.

Q: Will I get a certificate?

 A: Yes, a certificate of completion will be emailed.

Q: What if I have questions after the course?

 A: You can reach the instructor via email.

Q: Does it include real equipment pictures?

 A: Yes, this course has pictures from real plants.

Q: Is this course about biological microbiology? 

A: No. This course focuses on oxygen transfer and equipment design—not microbiological growth dynamics.

Q: Does it apply to both industrial and municipal plants?

 A: Yes, the principles apply to any system using aeration—lagoons, SBRs, MBRs, etc.

Q: Will I learn how to size a blower? 

A: Yes. We’ll cover practical blower selection methods and safety margins.

Q: Are design equations simplified for engineers? 

A: Yes. The math is minimal and focused on what you need to know to make decisions.

Q: Will this help reduce power costs? 

A: Absolutely. Aeration is typically the most energy-intensive part of treatment—better design means lower OPEX.

What Past Participants Say

— “Made blower selection and aeration design crystal clear.” – Wastewater Design Engineer
— “I finally understand what SOTE and AOR actually mean—and how to apply them.” – Plant Operator
— “This helped me fix an underaerated basin. Saved us major downtime.” – Process Consultant
— “Great visuals and practical advice. Really useful!” – Municipal Water Technologist