Podcast
Questions and Answers
What is the purpose of disinfection or sterilization in water treatment?
What is the purpose of disinfection or sterilization in water treatment?
- To increase the pH level of water
- To soften the water
- To kill harmful disease-producing bacteria (correct)
- To remove suspended particles from water
Which law describes the reduction in microorganisms when exposed to a disinfectant?
Which law describes the reduction in microorganisms when exposed to a disinfectant?
- Newton's Law
- Boyle's Law
- Brewster's Law
- Chick's Law (correct)
What effect does excess lime have on bacteria in water treatment?
What effect does excess lime have on bacteria in water treatment?
- It makes the water more acidic, which is beneficial for bacteria growth
- It helps bacteria multiply
- It has no effect on bacteria
- It makes the water excessively alkaline, which is detrimental to bacteria survival (correct)
Why is boiling water not a practical method for disinfection of large amounts of water?
Why is boiling water not a practical method for disinfection of large amounts of water?
What happens to ozone in water treatment?
What happens to ozone in water treatment?
Why is lime removed from water after disinfection before supplying it for public use?
Why is lime removed from water after disinfection before supplying it for public use?
What is the reference level used for head loss computations in the treatment plant?
What is the reference level used for head loss computations in the treatment plant?
When can flow by gravity not be achieved in a treatment plant?
When can flow by gravity not be achieved in a treatment plant?
What does the head loss through the treatment plant comprise?
What does the head loss through the treatment plant comprise?
Which of the following is NOT included in the head losses through the treatment unit?
Which of the following is NOT included in the head losses through the treatment unit?
What contributes to the total loss through connecting pipings, channels, and appurtenances?
What contributes to the total loss through connecting pipings, channels, and appurtenances?
When should hydraulic profiles be prepared in a treatment plant?
When should hydraulic profiles be prepared in a treatment plant?
What is the role of nascent oxygen in water treatment?
What is the role of nascent oxygen in water treatment?
According to the Enzymatic hypothesis, how does chlorine act as a germicide on bacteria?
According to the Enzymatic hypothesis, how does chlorine act as a germicide on bacteria?
What forms the free chlorine residual in water treatment?
What forms the free chlorine residual in water treatment?
What is the consequence of excess free chlorine after all ammonia nitrogen has converted to monochloramine?
What is the consequence of excess free chlorine after all ammonia nitrogen has converted to monochloramine?
What is the stoichiometry when hypochlorous acid reacts with ammonia in water treatment?
What is the stoichiometry when hypochlorous acid reacts with ammonia in water treatment?
How are chloramines removed in water treatment?
How are chloramines removed in water treatment?
In water treatment, what reaction can increase the chlorine demand by reacting with reduced iron at corrosion sites?
In water treatment, what reaction can increase the chlorine demand by reacting with reduced iron at corrosion sites?
"Plant layout" in water treatment refers to:
"Plant layout" in water treatment refers to:
"Siting" in water treatment involves:
"Siting" in water treatment involves:
"Site development" for a treatment plant should aim to:
"Site development" for a treatment plant should aim to:
