Podcast
Questions and Answers
What is the purpose of aerating a water treatment plant?
What is the purpose of aerating a water treatment plant?
- To accelerate the settling of grit in the water
- To add oxygen to the water as organic matter decays (correct)
- To release dissolved gases like hydrogen sulfide
- To increase the concentration of volatile gases in the water
How does aeration help in water treatment?
How does aeration help in water treatment?
- By causing grit to dissolve in the water
- By increasing the concentration of dissolved carbon dioxide
- By promoting the settling of 'grit' (correct)
- By preventing the release of volatile gases
What is the role of scrubbing action in aeration?
What is the role of scrubbing action in aeration?
- Add hydrogen sulfide to the water solution
- Remove dissolved gases like carbon dioxide from water (correct)
- Promote the growth of organic compounds
- Increase the odor of the water
How is oxidation used in water treatment?
How is oxidation used in water treatment?
What happens to heavy floc particles during sedimentation in a water treatment plant?
What happens to heavy floc particles during sedimentation in a water treatment plant?
Why is sludge collected at the bottom of sedimentation tanks?
Why is sludge collected at the bottom of sedimentation tanks?
What is the main function of the mechanical sludge scraping devices in circular and rectangular tanks?
What is the main function of the mechanical sludge scraping devices in circular and rectangular tanks?
In which type of tank is the main sludge removal from the top of the sludge basket?
In which type of tank is the main sludge removal from the top of the sludge basket?
What is the purpose of removing lighter materials such as grease, oils, plastics, and soap from sludge?
What is the purpose of removing lighter materials such as grease, oils, plastics, and soap from sludge?
Which method is used to remove bacteria, reduce turbidity, and remove most solid particles from liquid sewage?
Which method is used to remove bacteria, reduce turbidity, and remove most solid particles from liquid sewage?
What does a circular radial-flow tank typically consist of?
What does a circular radial-flow tank typically consist of?
What is the main function of filtering liquid sewage through sand by gravity in sewage treatment?
What is the main function of filtering liquid sewage through sand by gravity in sewage treatment?
