Question: 1. A trickling filter, 75 ft in diameter, treats a primary effluent flow of 640,000 gpd. If the recirculated flow to the trickling filter is

1. A trickling filter, 75 ft in diameter, treats a primary effluent flow of 640,000 gpd. If the recirculated flow to the trickling filter is 110,000 gpd, what is the hydraulic loading rate in gpd/sq ft on the trickling filter

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