Certified Pool Operator Practice Test

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Study for the Certified Pool Operator Test. Prepare with comprehensive flashcards and multiple-choice questions. Each question includes hints and detailed explanations. Get ready for your exam!

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The backwash ratio for high rate sand filters is __________.

  1. 1:1

  2. 1:2

  3. 1:3

  4. 1:4

The correct answer is: 1:1

The backwash ratio for high rate sand filters refers to the ratio of the flow rate during backwashing to the normal filtration flow rate. This ratio is important as it determines the efficiency of the backwashing process in removing dirt and debris from the filter bed. Option A, a 11 ratio, means that the flow rate during backwashing is equal to the normal filtration flow rate. This is the most efficient ratio for cleaning the filter bed. Options B, C, and D have higher backwash ratios, meaning the flow rate during backwashing is greater than the normal filtration flow rate. This may result in inadequate cleaning and potential damage to the filter bed. Therefore, option A is the correct answer.

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