1.6 Sedimentation

Which of the following best describes sedimentation?

• A mechanical process

• A biological process

• A chemical reaction

• A physical process

What role does gravity play in the sedimentation process?

• Causes chemical reactions

• Forces particles to settle

• Increases water temperature

• Enhances microbial activity

Which type of particles settle faster in the sedimentation process?

• Irregularly shaped particles

• Neutral particles

• Large particles

• Small particles

What is the purpose of coagulation before sedimentation?

• Increases particle size for easy removal

• Decreases water temperature

• Adds color to the water

• Enhances microbial growth

In the sedimentation process, what is the primary function of the floc?

• Create turbulence

• Form a layer on top

• Increase water density

• Trap suspended particles

What can disrupt the settling process in sedimentation basins?

• Increased temperature

• Agitation

• Reduce flow rates

• Large settling particles

How does sedimentation contribute to water conservation?

• Increasing water consumption

• Allowing evaporation

• Reusing settled water

• Reducing water temperature

What is the function of baffles in the settling zone of a sedimentation basin?

• Prevent short-circuiting

• Enhance floc formation

• Remove sludge

• Increase turbulence

What could be a consequence of inadequate settling time in the basin?

• Higher sludge production

• Short-circuiting

• Increased effluent quality

• Decreased flow rate

What is the purpose of a scraper mechanism in the sludge zone?

• Increase settling velocity

• Enhance floc formation

• Remove settled sludge

• Prevent turbulence