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
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