Which of these isn’t a main target for wastewater mixers?
Where do vortices develop if the propeller is too close to the water surface?
Why is it important to position mixers correctly?
What are deadzones?
Which of these describe the specific mixing power?
Test results
Congratulations. You have passed the test and completed the 20 - Mixing in Wastewater Treatment
Achieved badges:
Q: Which of these isn’t a main target for wastewater mixers?
A: To blend liquid with solid particles
Q: Which of these isn’t a main target for wastewater mixers?
A: To ensure quick drainage from the tank
Q: Which of these isn’t a main target for wastewater mixers?
A: To keep solid particles in suspension
Q: Where do vortices develop if the propeller is too close to the water surface?
A: At the front of the propeller
Q: Where do vortices develop if the propeller is too close to the water surface?
A: At the rear of the propeller
Q: Where do vortices develop if the propeller is too close to the water surface?
A: Underneath the propeller
Q: Why is it important to position mixers correctly?
A: To prevent the propellers from breaking
Q: Why is it important to position mixers correctly?
A: To neutralise vortices
Q: Why is it important to position mixers correctly?
A: To maximise the total bulk flow
Q: How much was the average velocity of the volume improved by?
A: 20%
Q: How much was the average velocity of the volume improved by?
A: 25%
Q: How much was the average velocity of the volume improved by?
A: 30%
Q: What are deadzones?
A: Areas that are compromised during the mixing process
Q: What are deadzones?
A: Areas consisting of infected water
Q: What are deadzones?
A: Areas in which the homogeneity is high
Q: Which of these describe the specific mixing power?
A: The ratio between the propeller power and the liquid volume
Q: Which of these describe the specific mixing power?
A: The ratio between the liquid volume and the solid particles
Q: Which of these describe the specific mixing power?
A: The ratio between the propeller power and propeller size