Q. What is the average pore diameter of NF270?

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Q. What is the surface roughness of the BW30 membrane?

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Q. What is the surface roughness of NF270 membrane?

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Q. Operating conditions also affect fouling of the membrane.

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Q. Which of the following factors does membrane fouling does not depend on?

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Q. Which of these pollutants cause biofilm formation?

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Q. Which of these do not cause scaling of the membranes?

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Q. How can biofilm formation be prevented?

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Q. How can scaling be prevented?

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Q. What is the SDI assumed for nanofiltration?

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Q. What is the SDI assumed for reverse osmosis spiral wound?

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Q. What is the SDI assumed for reverse osmosis hollow fibre?

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Q. What is the MFI in s/L2 assumed for nanofiltration?

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Q. What is the MFI in s/L2 assumed for reverse osmosis hollow fibre?

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Q. What is the MFI in s/L2 assumed for reverse osmosis spiral wound?

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Q. Ion exchange units are known as ______

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Q. Water softener units work most efficiently with particulate water.

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Q. Which of these have a negative electrical charge?

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Q. The ions with opposite charge can be exchanged.

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Q. While designing the demineralisation plant what is considered as the weak acidic cation load?

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