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Table 4 Chemical analysis of CSG water

From: Novel pre-treatment of zeolite materials for the removal of sodium ions: potential materials for coal seam gas co-produced wastewater

 

Na+

Ca2+

Mg2+

Cl

\( {\text{HCO}}_{3}^{ - } \)

SAR \( \left( {{\text{mEq/mEq}}^{1/2} } \right) \)

EC \( ({\text{dS/cm}}) \)

pH

\( \bar{X} \)

        

 (mg/L)

1156.4

28.3

5.6

1993

618.1

104

6.02

8.34

 (mEq/L)

50.3

0.35

0.12

56.2

10.1

σ

        

 (mg/L)

241.6

38.5

2.8

759.9

140.7

20

1.48

0.58

 (mEq/L)

10.5

0.4

0.06

21.4

2.3