What are deadzones?
How did the Stargard project redesign the layout of mixers in the tank?
What is the aim of thrust-to-power sizing?
Why is it important to position mixers correctly?
Which of these describe the specific mixing power?
Résultats de l’évaluation
Félicitations. Vous avez réussi l’évaluation et terminé le 20 - Mixing in Wastewater Treatment
Badges obtenus :
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: How did the Stargard project redesign the layout of mixers in the tank?
A: They gathered four mixers in the middle of the tank
Q: How did the Stargard project redesign the layout of mixers in the tank?
A: They spread four mixers across the tank
Q: How did the Stargard project redesign the layout of mixers in the tank?
A: They remained in the same position, but were replaced with more powerful mixers
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 is the aim of thrust-to-power sizing?
A: Maintain a steady momentum and a constant required thrust rate
Q: What is the aim of thrust-to-power sizing?
A: Deliver a sufficient thrust with the least possible energy consumption
Q: What is the aim of thrust-to-power sizing?
A: Run the power at the limit to deliver maximum thrust when necessary
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: 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