Geofluids / 2019 / Article / Tab 9

Research Article

A Review of the Hydrochemistry of a Deep Sedimentary Aquifer and Its Consequences for Geothermal Operation: Klaipeda, Lithuania

Table 9

Determination of particle loads from manual filtration of Klaipeda brines at various sampling points in July 2010 [9].

Location (Figure 8)Filter aperture (μm)Quantity of water filteredMass of filter residueLoading of filtered suspended solidsIdentified particulate matter, sorted by quantity
μmLitremgmg m-3

T2. Production wellhead (2P) prior to phosphonate dosing0.4544.253.476.8CuFeS2, iron (Cu, Zn) sulphides, iron hydroxides/oxides, K-feldspar, Ca(Mg)CO3, clay minerals, SiO2
T2. Production wellhead (2P) prior to phosphonate dosing0.4544.252.658.8
T2a. After phosphonate dosing, prior to bag filter0.4544.252.658.8Iron (Cu, Zn) sulphides, iron hydroxides/oxides, CaCO3, SiO2, Cu, Zn sulphides, CaSO4
T2a. After phosphonate dosing, prior to bag filter353.7Iron (Cu, Zn) sulphides, CaCO3, iron hydroxides/oxides, SiO2, CaSO4
T6. After bag filter, prior to heat pump heat exchanger0.4544.251.0122.8CuFeS2, iron (Cu, Zn) sulphides, K-feldspar, clay minerals, iron hydroxides/oxides, CaCO3, SiO2, CaSO4
T6. After bag filter, prior to heat pump heat exchanger354Iron hydroxides/oxides, iron sulphides
T8. After heat pump heat exchanger, prior to cartridge filter and injection pump at injection well 1I0.45450.715.6Iron (Ni, Zn) sulphides Fe, Cr particles, iron hydroxides/oxides, clay minerals, CaCO3, SiO2, CaSO4+P, Mg(Ca)CO3, CuZn sulphide
T8a. After cartridge filter and injection pump at injection well 1I0.4544.250.24.5Iron hydroxides/oxides, iron (Cu, Ni) sulphides, CaSO4, clay minerals, FeCr particles, zinc sulphide, SiO2
T12. After heat pump heat exchanger, prior to cartridge filter and injection pump at injection well 4I0.4544.25122.6Iron sulphides, CaCO3, iron hydroxides/oxides, clay minerals (bearing K, Mg, Fe), SiO2, FeCr particles
T14. After cartridge filter and injection pump at injection well 4I0.45451.431.1CuFeS2, Fe, Cr particles, SiO2, K-feldspar, CaCO3, Ca is always present, CaSO4?

Italic text indicates >10% of particulates.

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