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This set of MCQs helps students to learn about sedimentation which is the process by which suspended particles are removed from the water by means of gravity or separation. and chemical clarification are physical water treatment processes using gravity or buoyancy to remove suspended solids from water. Solid particles entrained by the turbulence of moving water may be removed naturally by sedimentation in the still water of lakes and oceans.
How many types of settling are there in the sedimentation tank?
In which type of settling, settling of particles takes place by the contact of impurities with each other present in wastewater?
_______ is formed when alum is added to sewage.
How many types of sedimentation tanks are there on the basis of the method of operation?
In which type of sedimentation, the flocculent suspension of the intermediate concentration takes place?
In which type of sedimentation, the flocculent suspension of high concentration takes place?
When the impurities are separated by the gravitation of settling particles, the operation is called ______
What is the settling velocity of the particle in the wastewater if its diameter is 2 * 10-3cm. Given G=2.65, viscosity v=8 * 10-3cm2/Sec?
In the expression vS = 1.8 (g*d (G-1))1/2, the diameter of spherical particle is ____________.
0.1mm
< 0.1mm
1mm
>1mm
The settling velocity of spherical particle is given by ____________.
Darcy Weisbach equation
Hazen and William equation
Stokes equation
Bernoulli’s equation
