CVEN 3424 WATER AND WASTE WATER TREATMENT HW 1 Introduction 30 points total 1-1 WC: 11-8. [5 pts} Determine the hydraulic detention time and overflow {hydraulic surface loading} rate in a 30 m diameter by 4 m deep sedimentation tank for a flowr rate of 12,000 msld. 1-2 WC: 11-9 [5 pts} What diameter and sidewall depth is needed fora circular clarifier for a flow 20,000 maid to achieve an overflow [hydraulic surface loading} rate of 20 mSImZ-d and a detention time of 3.0 hr? 1-3 WC: 11-11(3 pts} A water treatment plant has a sedimentation tank with a volume of 1,400 mg, a water depth of 3.0 m, and a lengthtowidth ratio of 2.5 to 1. If the plant flow rate is 9,000 msfd determine {a} the detention time in hours, {lo} the surface loading rate in mgflmZ-s], [c] the horizontal flow-through velocityr in mlhr. 1-4 WC: 11-12 {3 pts] The influent flow and 0005 to a wastewater treatment plant are 4,000 maid and 250 g/m3, respectively. What is the plant loading expressed in kilograms per day? 1-5 WQ 11-13 {3 pts} If 250 kg of chlorine is used to treat 125,000m3 of water, what is the dosage in milligrams per liter