Podcast
Questions and Answers
What is the main characteristic of aeration lagoons?
What is the main characteristic of aeration lagoons?
- Oval or race-track channel equipped with mechanical aerators
- Completely mixed stirred tank reactor
- Influent flows into the tank at several locations
- Continuous air injection at the bottom (correct)
Which configuration provides the benefits of plug flow and completely mixed reactor in one tank?
Which configuration provides the benefits of plug flow and completely mixed reactor in one tank?
- Step feed
- Plug flow
- Oxidation ditch (correct)
- Complete mix
What is the process where the influent is immediately diluted with the tank contents, resulting in uniform substrate concentration and dissolved oxygen?
What is the process where the influent is immediately diluted with the tank contents, resulting in uniform substrate concentration and dissolved oxygen?
- Complete mix (correct)
- Step feed
- Tapered aeration
- Plug flow
Which process involves flow entering one end of a long narrow tank and exiting at the other end?
Which process involves flow entering one end of a long narrow tank and exiting at the other end?
In which configuration does the influent flow into the aeration tank at several locations along its length?
In which configuration does the influent flow into the aeration tank at several locations along its length?
Which configuration involves an oval or race-track channel equipped with mechanical aerators?
Which configuration involves an oval or race-track channel equipped with mechanical aerators?
What is required for achieving a high nitrate removal efficiency in the single sludge process?
What is required for achieving a high nitrate removal efficiency in the single sludge process?
In the Bardenpho (4-stage) denitrification process, what was discovered to occur in actual practice besides nitrate removal?
In the Bardenpho (4-stage) denitrification process, what was discovered to occur in actual practice besides nitrate removal?
What is one of the requirements for achieving biological nutrient removal (BNR) in an oxidation ditch?
What is one of the requirements for achieving biological nutrient removal (BNR) in an oxidation ditch?
What characterizes a hybrid process that combines suspended growth and attached growth microorganisms?
What characterizes a hybrid process that combines suspended growth and attached growth microorganisms?
In the extended aeration process, what role does the long sludge retention times play?
In the extended aeration process, what role does the long sludge retention times play?
What is one of the key factors for efficient denitrification in the modified Ludzack-Ettinger process?
What is one of the key factors for efficient denitrification in the modified Ludzack-Ettinger process?
What is the main advantage of a tapered aeration system compared to step feeding?
What is the main advantage of a tapered aeration system compared to step feeding?
How long is process aeration extended in extended aeration treatment?
How long is process aeration extended in extended aeration treatment?
What is a key requirement for biological nitrogen removal during denitrification?
What is a key requirement for biological nitrogen removal during denitrification?
Which process relies on the return of nitrate from the aerobic zone to the anoxic zone?
Which process relies on the return of nitrate from the aerobic zone to the anoxic zone?
How does the step feed process differ when modified for denitrification?
How does the step feed process differ when modified for denitrification?
What additional operational step modifies the SBR system for BOD oxidation and nitrification?
What additional operational step modifies the SBR system for BOD oxidation and nitrification?
