Q. Solids are removed from the wastewater by which of the following unit operation?

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Q. Dealkalization results in removal of all the ions from the wastewater.

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Q. The minimum spacing between the bars on fine screen is ____________

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Q. The spacing between the bars in racks is ____________

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Q. Screens are inclined to the direction of flow to ____________

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Q. The maximum spacing between the bars in medium screen is ____________

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Q. __________ is used to cut the sewage into smaller parts.

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Q. What is the maximum capacity of medium screen in collecting solids?

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Q. The head loss through the screen is given by HL = k* (Vₜ² – Vₐ²), where Vₜ and Vₐ are velocities through and above the screen respectively. What is the value of constant k?

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Q. The unit of dynamic viscosity is ____________

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Q. Which of the following has minimum detention period?

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Q. The relation between dynamic and kinematic viscosity is given by ____________

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Q. The dimension formula of dynamic viscosity is ____________

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Q. The dimension formula of kinematic viscosity is ____________

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Q. The coefficient of drag for a transition settling is ____________

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Q. In which of the following, large impurities are attached with air bubbles to remove it from the wastewater?

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Q. Which of the following has a minimum detention period?

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Q. The design velocity of flow of a detritus tank is ____________

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Q. Which of the following device is used for the removal of oil and grease?

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Q. The detention period of detritus tank is ____________

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