A side-stream membrane bioreactor process (influent flow rate, Qf=0.44m3/s ) is operating to remove organic and inorganic compounds from the feed stream at 90% recovery. (a) Calculate Qp(m3/s) (5 points) (b) Calculate membrane surface area (m2) to get the constant permeate flux of 50.9L/m2/h. (5 points) (c) If this system uses spiral wound membrane elements with a packing density of 2,000m2/m3 and each element is 10cm in diameter and 95cm long. How many membrane elements would be required? (5 points) (d) If rejection efficiency of organic compounds (Cf=100mg/1) by the plant is 80%, then calculate concentration of organic compounds in the retentate stream (Cr) in mg/L. (5 points) (e) After one-month operation, transmembrane pressure (TMP) increased to 20kPa. Calculate the total resistance of membrane (m1) at 20C. Viscosity of water is 103Pas. (10 points)