Table 4 Sampling test results of recharge wells.

From: Numerical simulation of hydrochemical evolution of deep pore thermal reservoirs in shallow groundwater recharge of Yancheng uplift

Sample time

K+

Ca2+

Na+

Mg2+

Cl−

SO42−

HCO3−

120d

0.110

3.08

25.3

0.60

2.55

1.30

4.74

150d

0.11

3.08

25.3

0.6

2.55

1.3

4.74

180d

0.092

2.30

25.5

1.40

2.83

1.52

4.70

240d

0.091

2.280

25.633

1.500

3.353

1.580

4.647

360d

0.088

2.24

25.9

1.70

4.40

1.70

4.54

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