Geofluids / 2019 / Article / Tab 2

Research Article

Cements, Waters, and Scales: An Integrated Study of the Szeged Geothermal Systems (SE Hungary) to Characterize Natural Environmental Conditions of the Thermal Aquifer

Table 2

General hydrochemical properties of the investigated production (p) and reinjection (r) wells. Data for famous spas in Szeged are also shown for comparison.

Well IDB–415 pB–748 pB–744 rB–745 rB–746 rB–747 rAnna wellDóra II well

Bottom depth (m)1999193713961750174012259441706
Depth of screens (m)1727–19141733–18781112–13811636–17411519–17101012–1150n.d.n.d.
Number of filtered sections635334n.d.n.d.
Effluent water temperature(°C)79.876.955.775.664.554.95280
Water yield (m3/h)395456357872n.d.n.d.
Dissolved ions (mg/l)
Na+145014201270870830450350830
K+18.219.515.310.88.53.42.28.3
Li+0.240.260.150.160.120.02n.d.0.13
NH4+20.823.315.217.618.03.01.749.0
Ca2+10.111.21.55.06.56.42.18.9
Mg2+3.23.51.21.71.92.81.72.9
Fe (total)0.390.070.172.200.961.690.170.35
Cl42035024527401233544
Br3.206.303.200.320.220.33n.d.0.26
I3.203.101.900.110.090.120.080.15
F2.902.302.003.004.001.381.202.60
SO42−7044<10<10<10<10<1025
HCO32870318025002370228010108102196
TDS (mg/l)54306350464034803210167028093169
pH8.37.38.57.58.27.87.8n.d.
Phenol index (μg/l)1852204016001740273<5n.d.n.d.
Total methane (l/m3)9588093031068416n.d.n.d.
CO2 (l/m3)16719957238<1n.d.n.d.
LSI1.660.70.580.421.040.36−0.51
RSI4.985.97.346.656.127.078.82

Abbreviations: n.d. = no data; TDS = total dissolved solids; LSI = Langelier Stability Index; RSI = Ryznar Stability Index [41].

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