Q. With respect to the operation which of these screens is the most expensive?

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Q. Which of these type of screen can be used both as a fine and coarse screen?

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Q. What is the maximum allowable approach velocity for a bar screen at peak flow rates?

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Q. What should be installed in order to control the velocity of the bar screens?

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Q. What is the mathematical representation of hydraulic loses through a screen?

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Q. Which of these screens is used to remove secondary suspended solids?

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Q. What is the headloss for fine screens?

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Q. What is the amount of BOD removed by a fixed parabolic fine screen?

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Q. How is the headloss for a fine screen calculated?

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Q. What is the size of the openings for a microscreen?

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Q. What is the removal efficiency of TSS in case of microscreens?

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Q. What is the typical headloss through the microscreens?

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Q. What is the hydraulic loading rate for a microscreen?

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Q. Comminutors are usually installed in which size of water treatment plants?

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Q. What is the headloss through a communitor?

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Q. In aerated grit chambers, there are no moving parts below the water surface.

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Q. A grit chamber is usually installed ______ primary sedimentation tanks.

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Q. At what velocity will the particles settle down?

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Q. Grit chamber is constructed to protect the further mechanical equipment of the water treatment plant.

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Q. Grit chambers are constructed to prevent their accumulation in _______

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