Operation time TDS (mg/l) unit Ca++ Mg++ Na+ K+ Total cations CO3-- HCO3- SO4-- Cl- Total anions Hypothetical salts (%)
NaCl MgCl2 MgSO4 CaSO4 Ca(HCO3)2
Pre-treatment
(Raw water)
42847.12 mg/l 520.8 1672 12902 380 734.48 0 244 4000 23250 742.92 77 11 8 3 1
me/l 25.99 137.53 561.24 9.72 0 3.99 83.28 655.65
% 3.54 18.73 76.41 1.32 0 0.54 11.21 88.20
Produced water after 8 hours 24689.96 mg/l 334.8 836.2 7500 240 417.86 0 183 2900 12788 423.98 80 5 11 3 1
me/l 16.71 68.77 326.25 6.14 0 2.99 60.38 360.61
% 3.99 16.46 78.08 1.47 0 0.71 14.24 85.05
Produced water after
16 hours
21946.01 mg/l 297.6 723.2 6714 210 371.75 0 152.5 2300 11625 378.20 80 5 11 3 1
me/l 14.85 59.47 292.06 5.37 0 2.49 47.89 327.83
% 3.99 16.00 78.57 1.44 0 0.66 12.66 86.68
Produced water after 24 hours 16721.95 mg/l 223.2 542.4 5104 102 280.38 0 122 1680 9009.4 291.04 80 6 10 3 1
me/l 11.14 44.61 222.02 2.61 0 1.99 34.98 254.06
% 3.97 15.91 79.19 0.93 0 0.69 12.02 87.29
Table 5: Chemical analysis data of pre-treated and post treated sea water sample using PVA+CA&PEG composite membrane after each operating time through desalination process.
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