Waste Water Engineering Mock Test 3

10%

Question 1 of 10

1. Heat treatment involves heating of the sludge. The supernatant from the heat treatment system is rich in ___________

TSS

BOD

Heavy metals

TDS

Question 1 of 10

Question 2 of 10

2. In Newton’s law for the settling of discrete particles, the particles size is _______

1 mm

Less than 1 mm

Greater than 1 mm

0.5 mm

Question 2 of 10

Question 3 of 10

3. At what depth are the air diffusers placed in the grit chamber?

0.6-0.9 m

1-2 m

0.1-0.4m

0.45-0.6 m

Question 3 of 10

Question 4 of 10

4. Which of these remove coarse materials?

Fine screen

Commutors

Grit chamber

Coarse screen

Question 4 of 10

Question 5 of 10

5. The tanks built with mechanical means for continuous removal of solids being deposited by sedimentation are called _________

Eco-pons

Clarifiers

Settling basins

Sedimentation tanks

Question 5 of 10

Question 6 of 10

6. In which year was the term Biosolids introduced?

1998

2000

1995

1990

Question 6 of 10

Question 7 of 10

7. Which type of treatment does clarification fall in?

Tertiary treatment

Preliminary treatment

Primary treatment

Secondary treatment

Question 7 of 10

Question 8 of 10

8. The vertical type of sedimentation tanks are usually in _________ shape.

Cylindrical

Semi-circular

Circular

Rectangular

Question 8 of 10

Question 9 of 10

9. How many types of sedimentation tanks are there based on the method of operation?

Question 9 of 10

Question 10 of 10

10. Clarification removes most of the turbidity.

True

False

Question 10 of 10