Presenter: Dr. Sara Heger
Title: Septic Tank Sizing: Bigger Is Better
Content: This presentation reviews the septic tank as a primary treatment unit and explores how sizing, geometry, hydraulic retention time, watertightness, access, and secondary protection contribute to system performance and longevity. Participants will connect settling theory with practical sizing and maintenance decisions. Learning Objectives: Analyze the septic tank’s role as a primary treatment unit, apply settling theory to tank geometry and sizing decisions, and connect hydraulic retention time to effective sludge and scum separation and storage,
Title: Sampling – Where, When and How
Content: Taking wastewater samples from onsite sewage treatment systems is an important task for service providers, operators, maintainers, designers, and engineers. This session covers sampling locations, timing, equipment, representative collection practices, and how sampling data can be used to compare systems, rate performance, and calculate loading rates. Learning Objectives: Select appropriate sampling locations and timing, collect representative wastewater samples, and use sampling results to compare systems, rate performance, and calculate loading rates.
Title: Overview of Aerobic Treatment Unit
Content: This session introduces aerobic treatment units, including common configurations, treatment similarities and differences, and the biological processes that transform solids into gases, cell mass, and non-degradable material. Participants will gain a practical understanding of how ATUs support advanced wastewater treatment.
Learning Objectives: Identify common aerobic treatment unit configurations, explain the biological role of oxygen in treatment, and evaluate factors that influence ATU performance and maintenance.
Title: Commercial Design Considerations
Content: This session examines design considerations for commercial and high-strength wastewater applications, including variable use patterns, waste strength, nutrients, solids, and organic loading. Participants will review characterization needs, flow equalization, and design strategies that support long-term system performance. Learning Objectives: Characterize commercial wastewater sources, evaluate high-strength design considerations, and identify design and management strategies that improve long-term performance.