Question: 3. For a filter going through backwash, the bed expanded by 25%. The filter uses silica sand with a density of 2.65 g/cm3. The fixed

3. For a filter going through backwash, the bed expanded by

3. For a filter going through backwash, the bed expanded by 25%. The filter uses silica sand with a density of 2.65 g/cm3. The fixed bed depth is 1.5 m and media size is 1.15 mm. The porosity is 48% and the operational temperature is 15C. Determine the backwash flow rate. Kv = 228, Kj = 4.4

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