(Solved): Determine the dimensions for two rectangular primary sedimentation tanks operated in parallel that ...

Determine the dimensions for two rectangular primary sedimentation tanks operated in parallel that will process a flow of \( 3400 \mathrm{~m}^{3} / \) day of domestic wastewater based on the following criteria: an overflow rate of \( 32 \mathrm{~m}^{3} / \mathrm{m}^{2} \)-day, a side-water depth \( =2.4 \) meters, acceptable range for weir loading rate \( 125-250 \mathrm{~m}^{3} / \mathrm{m} \)-day, and a length/width ratio in the range of \( 3 / 1 \) to \( 5 / 1 \). State the location of the effluent weirs. Calculate the detention time and state the expected BOD removal efficiency after sizing the tanks, (25 points)