Q. What is the percentage of wash water?

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Q. Which of these does high rate filters not remove?

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Q. Which of these has been used as a medium for high rate filtration?

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Q. What is the porosity of these synthetic media?

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Q. While designing a high rate filter what would be the velocity assumed?

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Q. For a high rate filter calculate the diameter of the filter required for a flow of water of 200 m³/h.

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Q. What is the bed depth of the sand considered in such rapid filters?

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Q. Which is the special feature of secondary clarifier?

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Q. What does SSCC stand for?

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Q. What is the mixed liquor?

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Q. Micro-organisms metabolize the _______that exists after primary clarification.

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Q. What does EDI stand for?

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Q. What does MLSS stand for?

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Q. Radial tube header is designed to remove _______

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Q. Orifice placement is critical to the successful operation of the clarifier.

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Q. Hindered zone settling refers to the suspensions of intermediate concentration.

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Q. The liquid tends to move up through the interstices of contacting particles because of _______

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Q. Calculate the volume of the flocculation zone for a clariflocculator for the following data.

Flow: 500 m³/h.

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Q. Calculate the diameter of the flocculation zone for the following data:

Flow: 200 m³/h.
Height considered (SWD):3.5 m

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Q. Calculate the surface area of the flocculation zone for the following data.

Flow: 300 m³/h.
Rise rate :1.2 m/h

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