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Instructor: Mark Peterson, P.E.
Course Length: 1.5 Hours
Purpose and Background
Low pressure sewer systems can be used in areas where gravity sewer systems are not economical due to long distances or uneven terrain. Two types of low pressure sewer systems are in common use. One type uses grinder pumps at each building. The other type uses a septic tank and a septic tank effluent pump at each building. This webinar addresses the basic reasons to use a low pressure sewer system. It also discusses some of the characteristics of effluent pumps and grinder pumps, including advantages and disadvantages. It discusses the force main design parameters. It will also cover in general terms the hydraulic design of low pressure sewer systems and some of the challenges associated with these types of systems, including maintenance responsibilities.
Primary Discussion Topics
- Basic concepts of low pressure sewers
- Different system types
- Pump characteristics
- Design fow considerations
- Maintenance responsibility and considerations
Learning Outcomes
Upon completion of this course, you will be able to:
- Identify the two different types of systems (grinder pumps and septic tank effluent pumps)
- Describe the characteristics of grinder pumps and septic tank effluent pumps
- Identify how peak flows impact a low-pressure sewer system
- Identify the appropriate entity that should be responsible for different components of a low-pressure system
Webinar Benefits
- Learn how to identify the situations where a low-pressure sewer system would be appropriate
- Examine the differences between a system that uses grinder pumps and one that uses septic tanks and effluent pumps
- Examine the important differences between a grinder pump and an effluent pump
- Learn how peak flow considerations impact a low-pressure system differently than a typical sanitary sewer system
- Learn how different agencies approach maintenance responsibilities and how the different system types impact these decisions
Assessment of Learning Outcomes
Students' achievement of the learning outcomes will be assessed via a short post-assessment (true-false, multiple choice and fill in the blank questions).
Intended Audience
- Civil engineers responsible for design of low pressure sewer systems
- Public agency officials responsible for review of low pressure sewer systems
- Developers responsible for developing topographically challenging sites
Webinar Outline
- Concepts of low pressure sewer systems
- Grinder pump systems vs. septic tank effluent pump systems
- Pump characteristics
- Hydraulic design considerations
- Maintenance considerations
How to Earn your CEUs/PDHs and Receive Your Certificate of Completion
To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 1 year of purchasing the course.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]