Podcast
Questions and Answers
What is the process of killing harmful disease-producing bacteria in water known as?
What is the process of killing harmful disease-producing bacteria in water known as?
- Oxidation
- Sterilization (correct)
- Decontamination
- Purification
Which equation represents the reduction of microorganisms when exposed to a disinfectant?
Which equation represents the reduction of microorganisms when exposed to a disinfectant?
- $\frac{dN}{dt}=kN$
- $\frac{dN}{dt}=-kN$ (correct)
- $N=N_0e^{-kt}$
- $N=N_0(1-e^{-kt})$
What detrimental effect does excess lime have on water when used for disinfection?
What detrimental effect does excess lime have on water when used for disinfection?
- It reduces alkalinity
- It increases acidity
- It increases alkalinity
- It increases bacterial survival (correct)
Why is boiling not considered a practical method for disinfecting large quantities of water?
Why is boiling not considered a practical method for disinfecting large quantities of water?
What happens to ozone when used for water treatment?
What happens to ozone when used for water treatment?
Which method requires the removal of excess lime before supplying treated water to the public?
Which method requires the removal of excess lime before supplying treated water to the public?
What is the purpose of preparing hydraulic profiles at peak and average design flows?
What is the purpose of preparing hydraulic profiles at peak and average design flows?
Why is pumping sometimes needed in a treatment plant?
Why is pumping sometimes needed in a treatment plant?
What contributes to the total loss through connecting pipings, channels, and appurtenances?
What contributes to the total loss through connecting pipings, channels, and appurtenances?
What does the hydraulic profile represent in a treatment plant?
What does the hydraulic profile represent in a treatment plant?
What is a component of head losses through the treatment unit?
What is a component of head losses through the treatment unit?
Why is head loss computation started in the direction of flow using watersurface in the influent as a reference?
Why is head loss computation started in the direction of flow using watersurface in the influent as a reference?
What is the role of nascent oxygen in water treatment?
What is the role of nascent oxygen in water treatment?
What forms the free chlorine residual in water treatment?
What forms the free chlorine residual in water treatment?
Which compound reacts with chlorine to form chloramines in drinking water systems?
Which compound reacts with chlorine to form chloramines in drinking water systems?
What is the term for the reactions that create a unique relationship between chlorine dose and the form of chlorine?
What is the term for the reactions that create a unique relationship between chlorine dose and the form of chlorine?
Which principle is important in plant layout for treatment plants based on the provided text?
Which principle is important in plant layout for treatment plants based on the provided text?
What theory explains the germicidal action of chlorine in killing enzymes in bacteria?
What theory explains the germicidal action of chlorine in killing enzymes in bacteria?
In water treatment, what does the term 'chlorine demand' refer to?
In water treatment, what does the term 'chlorine demand' refer to?
What are the products of the breakpoint reaction?
What are the products of the breakpoint reaction?
What is the main disinfectant used by many drinking water utilities?
What is the main disinfectant used by many drinking water utilities?
What compound reacts with all forms of chlorine at corrosion sites at pipe walls?
What compound reacts with all forms of chlorine at corrosion sites at pipe walls?
