A new municipal wastewater treatment plant plans to have an average flow rate of 5.3 MGD and a peak daily flow rate of 13.2 MGD. Primary sedimentation tanks are planned prior to secondary treatment processes.
Design a system with two primary sedimentation basins in parallel that each has a channel width of 20 ft. Assume an average overflow rate d of 1,000 gal/ft². Specify the required surface area, A (ft²), and tank length, L (ft) of each basin. Assuming a sidewater depth of 13 ft, calculate the total tank volume (ft2).