Online Course
Wastewater Disinfection Fundamentals
Learn how the last health barrier at the plant works: how chlorine and UV lower disease-causing organisms, and how operators check, adjust and troubleshoot the process.
Course Details
- Certificate
- 1.0 hour
- Time
- About 70 minutes
- To pass
- 80% or better on the final
- Price
- For credit: $20, or $150 for the Course Pass. To learn with no credit: Included with Premium Pay for this course
For You
Pick your state or province to see if this course counts.
Your progress
Checking your course record…
What You'll Learn
- Explain why disinfection matters, what pathogens and indicator organisms are, and what can change results.
- Describe the forms of chlorine, chlorine demand, residual and contact time.
- Describe chlorine feed equipment: storage, metering pumps, drawdown checks, injection, contact basins and analyzers.
- Operate chlorination through the shift: dose and residual, flow pacing, sampling points, high flow and residual problems.
- Explain why and how chlorine is removed before discharge, and how to match and check the dechlorination feed.
- Explain how UV disinfection works and how lamps, sleeves, intensity, transmittance, cleaning and alarms affect it.
- Collect good samples, judge test quality, read trends, confirm alarms and keep clear records.
- Recognize chemical, gas, energy, fall and spill hazards, and connect disinfection to the whole process.
What's Inside 8 parts, 72 pages
Why Disinfection Matters 9 pages
- Welcome
- The Purpose
- Pathogens
- Indicator Organisms
- Not Sterilization
- Upstream Quality
- What Changes
- The Operator’s Job
- Checkpoint
Chlorine Basics 9 pages
- Why Chlorine
- Chlorine Forms
- Gas Chlorine
- Sodium Hypochlorite
- Calcium Hypochlorite
- Chlorine Demand
- Chlorine Residual
- Contact Time
- Checkpoint
Chlorine Feed Equipment 9 pages
- Feed System
- Chemical Storage
- Metering Pumps
- Pump Drawdown
- Valves and Tubing
- Injection and Mixing
- Contact Basins
- Online Analyzers
- Checkpoint
Operating Chlorination 9 pages
- Start of Shift
- Dose and Residual
- Flow Pacing
- Sampling Points
- Process Timing
- High Flow
- Low Residual
- High Residual
- Checkpoint
Dechlorination 9 pages
- Why Remove Chlorine
- Dechlor Chemicals
- Feed Point
- Matching the Feed
- Final Residual
- Underfeed
- Overfeed
- Safe Handling
- Checkpoint
Ultraviolet Disinfection 9 pages
- How UV Works
- UV Equipment
- Lamps and Sleeves
- UV Intensity
- UV Transmittance
- Flow and Exposure
- Cleaning UV
- UV Alarms
- Checkpoint
Monitoring and Troubleshooting 9 pages
- Good Samples
- Sample Care
- Test Quality
- Read the Trend
- Confirm the Alarm
- Find the Cause
- Maintenance Clues
- Clear Records
- Checkpoint
Safety and the Whole Process 9 pages
- Know the Hazard
- Gas Alarm
- Lockout Tagout
- Basins and Falls
- Spill Response
- Simple Process Math
- Ozone Overview
- Whole Process
- Final Checkpoint
More Details
Who It's For
Wastewater operators at any level and people studying to become operators. No experience needed.
It does not replace plant training or site-specific safety rules.
Format
72 narrated pages with short checks and a final. Built by a working wastewater operator (Washington Group III).
Where Does This Course Count?
A course counts toward your continuing education credit only once your state or province accepts it. Today Minnesota and Montana have approved our courses, they count in Alabama, Arizona, Idaho, South Carolina, where courses need no pre-approval, and we are asking more states. Ask us to add your state or province.
Do I Need an Account?
Yes, to take the course. Signing in lets us record your time and issue your certificate. This page, the topic pages and the practice questions need no account.
Can I Skip Ahead?
No. Each page has a minimum time before the next one opens, and your time is recorded.
What Do I Get When I Finish?
A certificate of completion from Operator Master for 1.0 hour, once you pass the final with 80% or better. Your operator certificate or license always comes from your state, not from Operator Master.