Water-and-waste-water Questions Set 47:
The effective size of a rapid sand filter is
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The value of the uniformity coefficient for uniformly graded sand is
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How much % of the bacteria in the water is removed by a slow sand filter?
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The effective size of sand of the slow sand filter is
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What is the frequency of cleaning of a slow sand filter?
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The depth of an enclosed tank of a rapid sand filter lies in the range of
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The minimum depth of sand of a rapid sand filter is given by
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In which type of under drainage system of rapid sand filter, laterals are provided with strainers?
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Which of the following statement is correct?
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Consider the following statement regarding the depth of sand of the rapid gravity filter.
i. It should be checked against breakage of floc
ii. The sand depth should lie between 100-200cm
iii. The floc should be attached through the sand bed
Which of the above statement is/are correct?
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