... membrane?8 .41 The feedwater to an RO unit contains 3,000 mg/L of NaCl, 300 mg/L of CaCl2, and 40 0 mg/L of MgSO 4 . The membrane used is cellulose acetate.Applying a pressure of 4, 826 kPag, ... N/m2=F177.76 46 .6() 4, 563 ,41 0()1 0.57–0.20m3m2⋅ day Ans==TX 249 _frame_C08.fm Page 390 Friday, June 14, 2002 4: 35 PM© 2003 by A. P. Sincero and G. A. SinceroTherefore,Example 8.8 A wastewater ... oper-ated?8.39 The feedwater to an RO unit contains 3,000 mg/L of NaCl, 300 mg/L of CaCl2, and 40 0 mg/L of MgSO 4 . The membrane used is cellulose acetate.Applying a pressure of 4, 826 kPag, the flux...