Math
Course Pack: Chemical Math & Process Calculations
Detention Time
Course Code: WWW-MAT-011
Old Course Code: 1003.3
Water/Wastewater/Dual: Dual
Course Pack: Chemical Math & Process Calculations
Course Time (mins): 30
State Approval ID:N/A
Course Description
Detention refers to the amount of time water spends in a water treatment system to ensure how effective the treatment is.
Learning Objectives
- Define detention time and its role in treatment performance
- Calculate theoretical and effective detention time
- Relate flow changes to contact time variability
- Use detention time to troubleshoot process issues
Agenda
- Detention time concepts and assumptions
- Volume and flow relationships
- Baffling factors and short‑circuiting
- Worked examples (basins, clearwells, digesters)
- Operational implications and compliance ties
- Quick‑calculation job aids
Target audience
Operators and OITs completing math series
Level
I, II
Learning material and method
Online on-demand
Assessment
Knowledge check and quiz (80% correct and above)
Instructor
John Hricko