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Important Question And Answer: Water Treatment

   Posted On :  09.07.2016 06:21 pm

Important Question And Answer: Water Treatment

Important Question And Answer: Water Treatment

 

 

1. What are the methods of desalination? 

    The methods of desalination are,

 

a. Desalination by evaporation & distillation. b. Electro dialysis method.

c. Reverse osmosis method.

d. Freezing process.

e. Solar distribution method.

f. Other method.

 

2. What is different system of distribution networks?

 

The different system of distribution networks is, a. Dead end system.

 

b. Grid iron system.

c. Ring system.

 

d. Radial system.

 

3. What are various methods of distribution system?

 

The various methods of distribution system are, a. Gravity system.

 

b. Pumping system.

c. Combined gravity and pumping system.

 

4. Define fire storage?

 

It is sufficient amount of water available in the reservoir for throwing it over the fire in case of fire accidents is called fire storage.

 

5. Enumerate various chemical parameter of water? Various chemical parameter of water are, a.

 

Chlorine content.

 

b. Nitrogen content. c. Iron content.

 

d. Manganese and other metal content.

 

6. What are the two types of sewage system?

 

The two types of sewage system are, a. Combined system:

 

When the drainage is taken along with the sewage then it is called as

combined system.

 

b. Separate system:

 

When the drainage and sewage are taken independently of each through two different sets of sewage is called as separate system.

 

7. What are the two types of water meter?

 

The two types of water meter are, a. Inferential meter.

 

b. Displacement meter.

 

8. Define time of concentration?

 

The period after which the entire area will start contributing to the runoff is called time of concentration.

 

9. List the components of sewerage system?

 

The components of sewerage system are, a. House sewers.

 

b. Lateral sewers.

 

c.     Branch sewers. d. Main sewers.

 

e. Outfall sewers. f. Man holes.

 

10. What is peak drainage disturbance?

 

The method estimating the maximum rate of storm runoff is called as peak drainage disturbance.

 

11.Mention some shapes of sewer pipes

 

        Circular shape

 

        Egg shape

 

        Horse shoe shape

 

        Parabolic shape

 

        Elliptical shape

 

Rectangular shape

 

 

 

 

12.What are the forces acting on sewer pipes?

 

�        Internal pressure of sewage

 

        Pressure due to external loads

 

        Temperature stress

 

        Flexural stress

 

13.What are the materials used for constructing sewer pipes?

 

        Vitrified clay

 

        Cement concrete

 

        Asbestos cement

 

        Cast iron

 

14.Give some qualities of the good sewer pipes

 

        Resistance to corrosion

 

        Resistance to abrasion

 

        Strength and durability

 

        Light weight

 

        Economy and cost

 

15.What are the tests conducted in sewer pipes after laying?

 

        Test for leakage(water test)

 

        Test for straightness of alignment and obstruction

 

16.Define sewer appurtenances

 

        Sewer appurtenances are those structures which are constructed at suitable interval along a sewerage system and help in its efficient operation and maintenance

 

17.Mention the classification of manholes

 

�        Shallow manholes

 

        Normal manholes

 

        Deep manholes

 

18.What is meant by catch basins?

 

        Catch basins are nothing but street inlets provided with additional small setting basins for avoiding the entry of the particles like grit, sand ,debris in to the sewer pipes

 

 

 

 

 

19.Define inverted siphons

 

        Inverted siphon is defined as the sewer section constructed lower than the adjacent sewer section and it runs full under gravity with pressure greater than the atmosphere

 

20.What are the various methods of ventilation for sewers?

 

        Use of ventilating columns

 

        Use of ventilating manhole covers

 

        Proper design of sewers

 

        Use of mechanical devices

 

21.        What is Unit operation and unit process?

 

Unit operation only involve physical operation

Unit process  is a process which involes both physical and chemical operation.

 

22. What are the various method of purification of water?

 

1.Screening

 

2.Plain Sedimentation

3. Filteration

4.Disinsfection

5.aeration

6.Softening

 

 

 

Tags : Civil - Environmental Engineering - Water Treatment
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