AI in Wastewater Treatment Control Quiz

Answers and explanations appear as you take the quiz.

1. According to the U.S. DOE wastewater energy guide, which process usually has the largest facility energy use?
   • Aeration
   • Pumping is always the largest at every plant
   • Office heating
   • Ultraviolet disinfection in all facilities
2. What does a soft sensor estimate?
   • A new regulatory permit
   • A difficult-to-measure process variable from other available measurements
   • The physical age of a pipe without data
   • A guaranteed effluent value
3. What is a reasonable use of a forecast of influent conditions?
   • Replace treatment processes and laboratory checks
   • Cancel the facility’s discharge permit
   • Provide information for operator review and planning
   • Guarantee that effluent will meet every limit
4. What does model predictive control use to choose process setpoints?
   • Randomly chosen setpoints without process information
   • An image classifier alone
   • A fixed output that ignores future conditions
   • A process model and an objective evaluated under constraints
5. Why must wastewater treatment decisions account for NPDES permits?
   • They establish applicable limits and requirements for point-source discharges
   • They set the price of model training
   • They certify that an AI controller is accurate
   • They replace process monitoring
6. Why can excessive aeration be a problem in addition to energy use?
   • It always sterilizes the whole plant
   • The DOE guide notes it can contribute to settling problems and solids carryover
   • It eliminates all process measurements
   • It makes permits unnecessary
7. How should a wastewater soft-sensor estimate be checked?
   • Assume the training score proves it is correct in operation
   • Compare it only with the model’s own prior predictions
   • Compare it with suitable laboratory or reference measurements
   • Remove measurement checks after deployment
8. What should be considered together when evaluating an aeration control?
   • Only the number of model parameters
   • Only the electricity price
   • Only training-set accuracy
   • Energy use, effluent quality, equipment limits, and permit conditions