Wastewater Lagoons and Ponds

Online /
May 1 - 2, 2024 /
Course Code: 15-0514-ONL24

The confirmation of this course depends on early registration; Register early to avoid the postponement or cancellation of a course.
  • Overview
  • Syllabus
  • Instructor


Please note, This instructor-led course has specific dates and times:
This course is held online over 2 days on the following schedule (All times in Eastern Time Zone):

10:00 am to 6:00 pm Eastern (Will include the usual breaks)

After participating in this course, you will be able to:

  • Recognize the application and operation principles of lagoons
  • Understand the physical, chemical, and biological processes that influence the operation and efficiency of lagoons
  • Assess design considerations for lagoons
  • Develop practical solutions to common problems encountered during the operation of lagoons

Lagoons are used as a stand-alone technology for treating effluents originating from domestic, industrial or agricultural activities. The successful operation of lagoons relies on proper design, sound operation, and maintenance practices. This course discusses the physical, chemical, and biological processes that govern wastewater treatment in lagoons and addresses the design principles and operation and maintenance practices of lagoons for increased efficiency of treatment, as well as the methods that help in upgrading lagoon effluents.

You will also learn how lagoons can be used as polishing steps for removing nutrients such as phosphorus.

Course Outline:

  • Applications, benefits and limitations of lagoons
  • Processes and controlling factors in wastewater treatment lagoons
  • Lagoons types, design and construction
  • Monitoring lagoons performance
  • Desludging lagoons
  • Potential causes and recommended solutions to reduced lagoons performance
  • Optimizing for improved quality of lagoons effluent
  • Optimizing for reduced energy consumption and cost
  • Optimizing design for improved treatment efficiency

Who Should Attend:
Plant Managers • Plant Operating Personnel • Environmental Engineers in Private Sector Development Projects • Engineers in Manufacturing Plants and Processing Plants • Municipal Engineers • Municipal Planners • Biologists • Chemists • Environmental Scientists • Geologists • Regulatory Personnel • Compliance Officers • Consulting Engineers

More Information

Time: 10:00 AM - 6:00 PM Eastern Time

Please note: You can check other time zones here.


Day 1

Applications, Benefits and Limitations of Lagoons

  • Treatment of wastewater and removal of organic and inorganic contaminants
  • Comparison of lagoons with conventional wastewater treatment plants
  • Cost, energy and maintenance aspects of lagoons

Processes and Controlling Factors in Wastewater Treatment Lagoons

  • Physical, chemical and biological treatment processes in lagoons
  • Physical, chemical and biological controlling factors
  • Role of algae in oxygen generation and pH changes
  • Removal processes for organic compounds, nitrogen and phosphorus
  • Lagoons design and operating parameters

Lagoons Types, Design and Construction

  • Facultative lagoons
  • Aerated lagoons
  • Aerobic lagoons
  • Anaerobic lagoons
  • Aeration means in lagoons
  • Degradation mechanisms in anaerobic lagoons
  • Operation and construction considerations of lagoons

Monitoring Lagoons Performance

  • Sampling types, locations and frequencies
  • Measurement of lagoons parameters: flow rate, pH, dissolved oxygen, solids, BOD
  • Lagoons maintenance aspects

Day 2

Desludging Lagoons

  • Problems associated with sludge accumulation in lagoons
  • Monitoring and management of sludge buildup
  • Options for sludge removal, treatment and disposal
  • Preventing sludge accumulation

Potential Causes and Recommended Solutions to the Reduced Lagoons Performance

  • Algae growth and control
  • Sludge accumulation
  • Benthal feedback
  • Changes in wastewater characteristics and/or environmental conditions
  • Bacterial activity

Optimizing for Improved Quality of Lagoons Effluent

  • Flow regulation
  • Structural design changes
  • Using biofilm/attached-growth systems
  • Optimizing for ammonia and phosphorus removal
  • Improving biological activity inside lagoons

Optimizing for Reduced Energy Consumption and Cost

  • Energy consumption and operating costs components in lagoons
  • Aeration means
  • Attached growth biomass
  • Cost reduction in mechanical aeration systems

Optimizing Design to Improve the Treatment Efficiency

  • Pre-treatment to reduce lagoon loading and improve the treatment efficiency
  • Post-treatment to improve the effluent quality
  • Attached-growth systems: RBC, MBBR, SAGR
  • Sand filtration systems
  • Wetlands
  • Effluent disinfection

Concluding Remarks: Lagoons Troubleshooting

Discussion Period: Questions and Answers


Laleh Yerushalmi, Ph.D., P.Eng.

Laleh is the Chief Technology Officer of BioCAST Systems Inc. and Dagua Technologies Inc. She holds a Ph.D. in Chemical Engineering and specializes in Environmental and Biochemical Engineering.

She is a professional engineer and member of l’Ordre des ingénieurs du Québec. Laleh is the inventor of BioCAST technologies and is currently in charge of research and development at BioCAST Systems Inc. and Dagua Technologies Inc. Laleh has more than twenty years of experience in the design, development and optimization of chemical and biological processes for wastewater treatment and site bioremediation.

She was formerly the Director of Research and Development, in charge of operation management and performance optimization of a proprietary wastewater treatment technology at Atara Corporation in Montreal. She has also been a Research Analyst at Statistics Canada, involved in environmental modelling, designing and developing methodologies for estimating environmental emissions. She was formerly a Research Officer at the National Research Council of Canada, responsible for designing and developing groundwater treatment technologies. Laleh teaches and supervises graduate research theses at McGill and Concordia Universities.

She has presented the results of her research at numerous conferences and has published more than a hundred articles in scientific journals.

The Engineering Institute of Canada

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Fee & Credits

$1295 + taxes

  • 1.4 Continuing Education Units (CEUs)
  • 14 Professional Development Hours (PDHs)
  • ECAA Annual Professional Development Points

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