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Water-and-waste-water Questions Set 42:

Quiz Mode

In a fill-and-draw type sedimentation tank, What is the detention period in hours?

Solution:

The detention period of a rectangular tank is given by

t₀ = LBH/Q

t₀ = LB/HQ

t₀ = Q/LBH

t₀ = HQ/LB

Solution:

The elapsed time in gravity filter is 1sec. What is the height of fall in a single descent?

4.4m

4.9m

8.8m

9.8m

Solution:

1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

36000

864000

24000

6000

Solution:

What will be the surface area of the basin for a flow of 2*10⁶ litre per day having a surface loading rate 10,000 litre/day/m²?

100

200

300

400

Solution:

The time period for which the water is stored in a sedimentation tank is called

Time of flow

Frequency of flow

Settling time

Detention period

Solution:

In which type of settling, sedimentation of discrete particles takes place?

Zone settling

Compression settling

Hindered settling

Discrete settling

Solution:

Which of the following are used in fine screen so that they do not get clogged up?

Automatic strainers

Spray aerators

Cascade aerators

Gravel bed aerators

Solution:

Which of the following represents the correct relation between displacement velocity and diameter of the particle?

v1 = (8Bg (G-1) d/f) ^1/2

v1 = (8Bg (G-1) d2/f)²

v1 = (8Bg (G-1) d/f)

v1 = (8Bg (G-1) d/f)²

Solution:

A water sample or testing gave the following data
From the above data , non carbonate
hardness in the water sample is use
atomic weights as
[Na+]=38 mg/l,∣∣Ca2+∣∣=10 mg/l
[HCO−3]=183 mg/l,[Mg2+]=12 mg/l
[CO2−3]=30 mg/l,[Al3+]=27 mg/l
[SO2−4]=45 mg/l
Ca = 40, O = 16 , Mg = 24 , Na = 23 , Al = 27, C = 12, H = 1, S = 32
(in mg/l as CaCO3)

175

225

Water-and-waste-water Questions Set 42:

In a fill-and-draw type sedimentation tank, What is the detention period in hours?

Solution:

The detention period of a rectangular tank is given by

Solution:

The elapsed time in gravity filter is 1sec. What is the height of fall in a single descent?

Solution:

1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

Solution:

What will be the surface area of the basin for a flow of 2*10⁶ litre per day having a surface loading rate 10,000 litre/day/m²?

Solution:

The time period for which the water is stored in a sedimentation tank is called

Solution:

In which type of settling, sedimentation of discrete particles takes place?

Solution:

Which of the following are used in fine screen so that they do not get clogged up?

Solution:

Which of the following represents the correct relation between displacement velocity and diameter of the particle?

Solution:

Solution:

Related Question Sets:

Related Topics:

Water-and-waste-water Questions Set 42:

In a fill-and-draw type sedimentation tank, What is the detention period in hours?

Solution:

The detention period of a rectangular tank is given by

Solution:

The elapsed time in gravity filter is 1sec. What is the height of fall in a single descent?

Solution:

1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m2.

Solution:

What will be the surface area of the basin for a flow of 2*106 litre per day having a surface loading rate 10,000 litre/day/m2?

Solution:

The time period for which the water is stored in a sedimentation tank is called

Solution:

In which type of settling, sedimentation of discrete particles takes place?

Solution:

Which of the following are used in fine screen so that they do not get clogged up?

Solution:

Which of the following represents the correct relation between displacement velocity and diameter of the particle?

Solution:

Solution:

Related Question Sets:

Related Topics:

1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m².

What will be the surface area of the basin for a flow of 2*10⁶ litre per day having a surface loading rate 10,000 litre/day/m²?