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 Row water)

3333

mg/l

334.8

180.8

614

5.09

 

58.41

0

244

900

1176

 

55.89

46

18

7

22

7

me/l

16.71

14.87

26.70

0.13

0

3.989

18.73

33.16

%

28.6

25.46

45.72

0.22

0

7.14

33.53

59.33

Produced water after
8 hr.

1620

mg/l

167.4

79.1

316.6

1.82

 

28.67

0

122

370

624

 

27.29

48

17

6

22

7

me/l

8.353

6.505

13.77

0.04

0

1.99

7.7

17.59

%

29.13

22.68

48.03

0.16

0

7.42

28.22

64.27

Produced water after 16 hr.

1301

mg/l

130.2

56.5

252

1.36

 

22.14

0

106.8

280

528

22.46

50

15

6

21

8

me/l

6.497

4.65

10.96

0.034

0

1.74

5.82

14.88

%

29.33

21

49.51

0.16

0

7.77

25.39

64.84

Produced water after
24 hr.

933

mg/l

93

33.9

209

1.36

 

16.53

0

76.25

150

408

 

15.87

55

14

3

20

8

me/l

4.641

2.79

9.07

0.034

0

1.24

3.123

11.50

%

28.07

16.86

54.86

0.21

0

7.85

18.79

69.21

Table 4: Chemical analysis data of raw water and post treatment of highly saline water samples using PVA+CA reverse osmosis membrane.