Research on Formation Mechanism of Jiyang Shallow Saline Ground
Water

Shallow salt water in the inland plain has huge development potential. Taking saline water area in Sungeng Town, Jiyang County as an example, based on field water quality and water table tests., tracing test, methods such as mathematical statistical, hydrochemistry diagram of piper and numerical simulation by PHREEQC are used to analyze synthetically. 6862 groups data were studied. Results showed: (1) The groundwater presents typically “weather - evaporation” type, chemistry type is Cl.SO4-Mg.Na. and Cl.SO4-Na.Mg type. (2) In area of inland saline water presents characteristics of lagging water flow with high clay content in aquifer medium. Groundwater mineralization is obvious. (3) Hydrogeochemistry actions such as evaporation, alternate adsorption and water-rock interaction are the primary cause of the forming complex hydrochemistry type. The unique groundwater circulation characteristics of inland plains saltwater area makes water dynamic being relatively stable.

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The Chemical Dynamic Characteristic Research of Inland Shallow Salt Water

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.1185 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 1185-1188

Author(s):

Tong Qiang Peng ◽

Feng Juan Zhang ◽

Li Ting Xing ◽

Yan Cheng Han ◽

Zhao Han ◽

...

Keyword(s):

Quality Improvement ◽

Salt Water ◽

Groundwater Resources ◽

Shallow Groundwater ◽

Water Area ◽

Test Analysis ◽

Rock Interaction ◽

Piper Diagram ◽

Resources Exploitation ◽

Water Rock Interaction

Shallow inland water resources has a large potential for development. To Jiyang shallow groundwater for example, through the regular ion-test analysis, Piper diagram and hydrogeochemical characteristics, the results show that: (1) The type of chemistry of shallow groundwater inland were Cl·SO4-Mg·Na·Ca; (2) The salt water area is relatively fixed, there is no expansion or decreasing trend; (3) The level flow of shallow groundwater is slow and water rock interaction is strong, that is not conducive to the shallow groundwater quality improvement, changing the runoff conditions of shallow groundwater is essential way for shallow groundwater resources exploitation.

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Time and Space Evolution of Shallow Saline Groudwater Dynamic in Inland Area of Jiyang County，Shandong Province, China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.1197 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 1197-1201

Author(s):

Feng Juan Zhang ◽

Li Ting Xing ◽

Tong Qiang Peng ◽

Juan Zhou ◽

Yi Yang

Keyword(s):

Saline Water ◽

Shallow Groundwater ◽

Pumping Test ◽

Water Area ◽

Creeping Flow ◽

Water Testing ◽

Dynamic Type ◽

Groundwater Circulation ◽

The Town

Inland plain shallow saline water has great exploitation potentiality. Based on field water testing, water level monitoring, pumping test, as well as indoor leaching experiment, applying mathematical statistics, Pipers trilinear nomograph and PHREEQC chemistry simulation methods, saline water area of the town of Sungeng Jiyang was studied. The results showed as follows: (1) Inland shallow groundwater presents “weather-evaporative” dynamic type; (2)The shallow saline water and middle-deep groundwater belonging to different flow system; (3) Because of the creeping flow and aqueous medium riched in clay, inland shallow groundwater mineralized significantly. In saline water area inland plain, the unique features of groundwater circulation result in brackish water dynamic relative stability.

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Mixing Experimental Study on Water-rock Interaction (WRI) in the Inland Shallow Salt Groundwater Area

The Open Chemical Engineering Journal ◽

10.2174/1874123101509010025 ◽

2015 ◽

Vol 9 (1) ◽

pp. 25-28 ◽

Cited By ~ 1

Author(s):

Li Changsuo ◽

Xing Liting ◽

Wang Liyan ◽

Zhang Fengjuan ◽

Liu Bo

Keyword(s):

Salt Water ◽

Atmospheric Precipitation ◽

Shallow Groundwater ◽

Mineral Dissolution ◽

Rock Interaction ◽

Groundwater Circulation ◽

Exchange Adsorption ◽

Action Process ◽

Strong Evaporation ◽

Water Rock Interaction

The shallow salt groundwater is widely distributed in North Shandong, which makes it difficult for people and livestock to drink daily. In addtion, the genetic mechanism of shallow salt groundwater is complicated. The study was carried out in Xiyan Village of Jiyang County, it choosed the silt buried in 3-9 m depth, shallow salt groundwater and atmospheric precipitation as test materials to measure chemical composition of groundwater. Base on soluble salt test, rain-saltwater mixing test and rain-saltwater-silt mixing test, ions component of mixture were measured, the hydrogeochemical action process of WRI was analyzed and formation-evolution of inland saltwater was deepened knowledge. It is shown that (1) The occurrence threshold of WRI was 20%, which was the volume of saltwater in mixture. (2) When the rainwater, saltwater and silt were mixed together for 12 hours, calcite and dolomite precipitated, halite and gypsum were in dissolved state. When the volume of saltwater in mixture was larger than 20%, gypsum was closed to saturation, the main cation exchange was Mg-Na, the exchange of Ca-Na was in the second place; The order for anion adsorption amount of aquifer medium was SO42- > HCO3- >C-. The study proves that groundwater circulation is slow and continual, some hydrochemical actions (i.e. ion exchange, adsorption, mineral dissolution or precipitation, and strong evaporation-concentration) are happened during the evolution process of inland shallow groundwater. All these will lead to Cl•SO4-Mg•Na type salt or slight salt water with TDS being larger than 2g·L-1.

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Evolution of groundwater chemistry in coastal aquifers of the Northern Dvina basin (NW Russia)

E3S Web of Conferences ◽

10.1051/e3sconf/20199807016 ◽

2019 ◽

Vol 98 ◽

pp. 07016

Author(s):

Alexander Malov

Keyword(s):

Fresh Water ◽

Coastal Aquifers ◽

Salt Water ◽

Groundwater Chemistry ◽

Rock Interaction ◽

Calcite Dissolution ◽

Alkaline Earth Elements ◽

Northern Dvina Basin ◽

Hydrolysis Of ◽

Water Rock Interaction

The specific objective of the study is to clarify the sources and characteristics of groundwater chemistry in coastal aquifers of the Northern Dvina basin. It has been established that the chemical composition of fresh water evolves in the direction (Ca-Mg-HCO3) - (Na-HCO3) - (Na-Cl). It is due to successive replacement of the process of calcite dissolution in the recharge area on the watershed i) by the process of hydrolysis of sodium aluminosilicates in the transit zone and ii) by the processes of mixing fresh water with salt water and brines, cation exchange of alkaline earth elements with alkaline elements and dissolution of gypsum near discharge areas at the seashore and in paleovalleys. In the brackish and salty waters the Na/Ca ratio is reduced to 1-4. This indicates that in the aquifers there are other sources of Ca, in addition to the dissolution of gypsum. The most probable process is the hydrolysis of Ca-aluminosilicates, which indicates a significant time of water-rock interaction. The “brackish1” water with TDS 5-6 g·L-1, is particularly distinguished by the degree of modification due to water-rock interaction.

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Noble gas geochemistry and chronology of groundwater in an active rift basin in central China

E3S Web of Conferences ◽

10.1051/e3sconf/20199801040 ◽

2019 ◽

Vol 98 ◽

pp. 01040 ◽

Cited By ~ 1

Author(s):

Zhonghe Pang ◽

Jie Li ◽

Jiao Tian

Keyword(s):

Groundwater Recharge ◽

Noble Gas ◽

Sedimentary Basins ◽

Central China ◽

Rift Basin ◽

Rock Interaction ◽

Groundwater Circulation ◽

History Of ◽

Circulation Dynamics ◽

Water Rock Interaction

Stable noble gas isotopes are excellent groundwater tracers. Radioactive noble gases are emerging new tools in the study of groundwater circulation dynamics. Among these, the 85Kr and 81Kr, and 39Ar have advanced very fast in recent years and exhibit strong potential in the reconstruction of the history of groundwater recharge and evolution in sedimentary basins at different scales. Here, we report the findings in groundwater circulation dynamics as relative to intensive water-rock interactions, heat transfer and He gas flux in Guanzhong Basin located in Xi’an, the geographical centre of China, which is a rift basin created by collision between the Eurasia and Indian plates, with active neotectonic activities. The recent technological breakthrough in noble gas isotope measurements, i.e. the atomic trap trace analysis (ATTA) techniques on Kr and Ar gas radionuclei, has revolutionized groundwater dating. Noble gas samples from shallow and deep wells to 3000 m depth have been collected to study isotope variations to reconstruct the history of groundwater recharge and understand the water-rock interaction processes. Stable isotopes of water show strong water-rock interaction in the formation, creating a strong positive O-isotope shift up to 10 ‰, a phenomenon that is rarely seen in a fairly low temperature environment. Analysis of 85Kr and 81Kr show groundwater ages up to 1.3 million years old along both North-South and a West-East cross sections, which offers strong evidence about the slow moving flow, strong water-rock interaction, rich geothermal resources as well as He gas resources.

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HIDROGEOQUÍMICA DAS ÁGUAS SUBTERRÂNEAS NO MUNICÍPIO DE LENÇÓIS, BAHIA

Brazilian Journal of Aquatic Science and Technology ◽

10.14210/bjast.v19n2.7513 ◽

2016 ◽

Vol 19 (2) ◽

Author(s):

Jonatas Batista Mattos ◽

Manoel Jerônimo Moreira Cruz ◽

Francisco Carlos Fernandes De Paula

Keyword(s):

Electrical Conductivity ◽

Salt Water ◽

Hard Water ◽

Total Dissolved Solids ◽

The Other ◽

Rock Interaction ◽

Metasedimentary Rocks ◽

Low Concentrations ◽

Sampling Points ◽

Water Rock Interaction

This study aimed to point out the hydrogeochemistry groundwater in the municipality of Lençóis, State of Bahia, to classify them according to the content and types of dissolved salts. To this, twenty sampling points were listed in the groundwater in aquifers formed by metasediments, detritical covers and limestones, with the purpose of analyze the following parameters: electrical conductivity, temperature, pH, turbidity, total dissolved solids, HCO3, PO4, SO4, Cl-, NO3, Na+, K+, Ca2+, Mg2+, Fe3+, Mn4+, Sr2+ and Ba2+. The results showed that the groundwater in the municipality of Lençóis are distributed into two zones with different hydrogeochemistry, one of the largest controlled by geological clastic metasedimentary rocks typologies (sandstones, quartzites, conglomeratics, detritical covers) where the process of water-rock interaction allows occur little quantity salt water, slightly acidic, sweet, soft and predominantly sulfated sodic. The other zone is controlled by chemical metasedimentary rocks (limestones) as well as bicarbonates, where they occur hard water, slightly alkaline, sweets and sulfated calcic and mixed. The levels of metals and elements nitrate, phosphate and sulfate presented themselves generally at low concentrations, with some deviations detected in points of the urban area.

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Study of Water-rock Interaction with Hydrochemical and Isotopic Datum in Laizhou Bay

The Open Chemical Engineering Journal ◽

10.2174/1874123101509010090 ◽

2015 ◽

Vol 9 (1) ◽

pp. 90-97 ◽

Cited By ~ 1

Author(s):

Liu Feng ◽

Ma Fengshan ◽

Guo Jie ◽

Ding Kuo

Keyword(s):

Surface Water ◽

Fresh Water ◽

Water Surface ◽

Saline Water ◽

Eastern China ◽

Laizhou Bay ◽

Rock Interaction ◽

Aquifer System ◽

Isotopic Analyses ◽

Water Rock Interaction

Water-rock interaction of the groundwater in aquifer system has been analyzed and inferred with hydrochemical and isotopic datum in Laizhou Bay, eastern China. 32 samples of groundwater from three boreholes (96-5#, 96-6#, 112- 1#), couples of seawater, saline water, fresh water, surface water and rainfall are obtained in study area for hydrochemical and isotopic analyses. The origin of groundwater is generally concluded by stable isotope (§18O and §D) and the analytic results of Na+, Ca2+, Mg2+, Cl-, SO2- , HCO3- changing with depth, combined with total dissolved solids (TDS), electrical conductivity (EC), can be apparently proofs for serious water-rock interaction. The conclusion reveals that the origin of 96-5#, 112-1# is most likely saline water different from that the groundwater of 96-6# which is possible originated from fresh water, surface water or mixing of both. Compared the ion content of same borehole at different depth and different boreholes with same depth, the optimal area for building main well and mining area is determined eventually is around 96-5#.

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Geothermometry and Circulation Behavior of the Hot Springs in Yunlong County of Yunnan in Southwest China

Geofluids ◽

10.1155/2019/8432496 ◽

2019 ◽

Vol 2019 ◽

pp. 1-16

Author(s):

Xiaocui Wang ◽

Xun Zhou

Keyword(s):

Southwest China ◽

Hot Springs ◽

Cold Water ◽

Geothermal Reservoir ◽

Spring Discharge ◽

Geochemical Processes ◽

Rock Interaction ◽

Thermal Groundwater ◽

Groundwater Circulation ◽

Water Rock Interaction

Travertine and nontravertine thermal springs have been studied in Yunlong County in southwest China to determine the geothermal reservoir temperatures and to find the geochemical processes that affect the evolution of thermal groundwater constituents during subsurface circulation. Hydrochemical characteristics distinguish travertine from nontravertine types. Travertine springs show HCO3·Cl-Na and SO4·HCO3-Ca·Na type, and a nontravertine spring presents Cl·HCO3·SO4-Na type. Log(Q/K) versus T diagrams show that reservoir temperatures can be expressed as intervals based on the equilibrium mineral assemblages coexisting in equilibrium and multiminerals in equilibrium with the aid of the PHREEQC and WATCH programs. The spring water mixing ratio with shallow water is between 59% and 82% with steam loss ranging from 12.1% to 27.8%. The Dalang Spring mixes with the highest proportion of cold water (76% to 82%) among the four hot springs and has the highest geothermal reservoir temperature (132°C to 176.9°C). The water-rock interaction during recharge from precipitation demonstrates that the minerals halite, kaolinite, chalcedony, plagioclase, and CO2(g) play an important part in the evolution of the thermal groundwater. Four inverse modeling simulation paths between precipitation and spring discharge were established to calculate the mass flux of minerals by the PHREEQC program. Halite, kaolinite, chalcedony, plagioclase, and CO2(g) participate in dissolution reactions in the thermal groundwater circulation, while gypsum, calcite, dolomite, biotite, and fluorite keep the geochemical processes in equilibrium.

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