Waste Water Engineering Practice Test 2

1. Which type of mixer is used when the flow needs to be changed often?

2. Which heavy metal is found in cooling water treatment?

3. Waste water is injected into the ground between impermeable layers of rocks to avoid polluting fresh water supplies.

4. What is the objective of water quality management?

5. Supplemental means of aeration are often employed with an equalization basin to provide better mixing.

6. ______ is determined by measuring the dissolved oxygen used during the chemical oxidation of organic matter in 3 hours.

7. Refrigeration is a mass transfer process.

8. In which of the following bioreactors is the vessel divided into two interconnected zones?

9. Organic matter + nutrients + O₂ → CO₂ + H₂O + _______

10. Which of these is the used as the indicator when the titration is carried out to determine the amount of COD present in a sample.