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Q. |
What is the maximum allowable flow for backwash? |
A. | 20 m/hr |
B. | 45 m/hr |
C. | 60 m/hr |
D. | 80 m/hr |
Answer» C. 60 m/hr | |
Explanation: the maximum allowable water flow for backwash is 60 m/hr. the recommended water flow for backwash is 45 m/hr. |
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