1. (15 points) A circular primary clarifier (PC) is to be designed for a municipal wastewater treatment plant that has an average flow of 0.07 m/s and a peak hourly flow of 0.175 m3/s. The side water depth of the PC will be 4 m, and the target overflow rate will be 40 m/dm? under average flow conditions. Ignore redundancy considerations. Based on the criteria above, (a) determine the required diameter (in m) for the PC assuming increments of 0.5 m are allowed. Using your final PC design, report the actual values for: (b) surface area (in m-) and water volume (in m) (c) overflow rates (in m/dom) for average and peak flows (d) detention times (in h) for average and peak flows (e) Based on typical values, will your final PC design be acceptable