7.4 questions

What is the purpose of flocculation in the mechanical water treating process?

• To remove large particles from the water

• To help small particles clump together

• To disinfect the water

• To adjust the pH of the water

• No correct answer

Which of the following is a common method used in the sedimentation stage of water treatment?

• Filtration

• Chlorination

• Aeration

• Allowing particles to settle

• No correct answer

What is the primary goal of coagulation in water treatment?

• To kill bacteria

• To remove dissolved minerals

• To neutralize the charge of particles

• To add color to the water

• No correct answer

How does the filtration stage contribute to clean water production?

• By exposing water to UV light

• By trapping tiny particles in a medium

• By evaporating the water

• By adding minerals for taste

• No correct answer

In the context of water treatment, what does the acronym 'TDS' stand for?

• Total Dissolved Solids

• Toxin Detection System

• Treatment and Disinfection Strategy

• Turbidity Determination Solution

• No correct answer

Which step usually follows the filtration stage in the mechanical water treating process?

• Sedimentation

• Aeration

• Disinfection

• Softening

• No correct answer

What is the purpose of the disinfection stage in water treatment processes?

• To remove odors

• To adjust the temperature of the water

• To kill harmful microorganisms

• To enhance the taste of the water

• No correct answer

What does the term 'backwash' refer to in water filtration systems?

• The flow of water in the opposite direction to clean the filter

• The addition of chemicals to the water

• The measurement of water turbidity

• The final stage before water distribution

• No correct answer

How does aeration contribute to the water treatment process?

• By adding oxygen to the water to remove impurities

• By reducing the water temperature

• By increasing the concentration of minerals

• By speeding up the sedimentation process

• No correct answer

What is the primary purpose of the biological water treating process?

• Remove heavy metals from water

• Break down organic matter into simpler substances

• Increase the water temperature

• Add more chemicals to the water

• No correct answer