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This set of MCQs helps students to learn about unit operations for wastewater treatment, preliminary treatment which aims to remove bulky and large solids, thus preconditioning the effluent prior to the remainder of the treatment. This stage involves several unit operations such as screening, comminution, sedimentation for grit removal, skimming, and flow equalization.
By which process, odor producing substances are oxidized?
Which of the following process is used to remove the colloidal particles from the effluent?
In which unit operation, gases are released or absorbed in the effluent?
Which form of solute stabilization occurs when effluent passes through limestone?
Solids are removed from the wastewater by which of the following unit operation?
Dealkalization results in removal of all the ions from the wastewater.
Which of the following has minimum detention period?
Which of the following has a minimum detention period?
In which of the following, large impurities are attached with air bubbles to remove it from the wastewater?
Organic contaminants are removed from the wastewater by ____________.
Water softening
Demineralization
Absorption
Adsorption
The unit of dynamic viscosity is ____________.
Metre2/Sec
Metre/Sec
Pa * Sec
Dimensionless
The relation between dynamic and kinematic viscosity is given by ____________.
Dynamic viscosity = Kinematic viscosity * Density of water
Kinematic viscosity = Dynamic viscosity + Density of water
Dynamic viscosity = Dynematic viscosity * Density of water
Dynamic viscosity = Kinematic viscosity / Density of water
The coefficient of drag for a transition settling is ____________.
CD = 18.5/R^0.6
CD = 24/R
CD = 8.5/R0.6
CD = R/24
