The Chemical Dynamic Characteristic Research of Inland Shallow Salt Water

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.

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

2015 ◽  
Vol 9 (1) ◽  
pp. 25-28 ◽  
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.

scholarly journals Research on Formation Mechanism of Jiyang Shallow Saline Ground Water

2015 ◽  
Vol 9 (1) ◽  
pp. 155-160
Author(s):  
Zhang Fengjuan ◽  
Xing Liting ◽  
Wang Song ◽  
Zhuang Huibo ◽  
Dou Tongwen ◽  
...  
Keyword(s):  
Saline Water ◽  
Salt Water ◽  
Clay Content ◽  
Water Area ◽  
Test Methods ◽  
Rock Interaction ◽  
Tracing Test ◽  
Groundwater Circulation ◽  
Water Rock Interaction

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.

scholarly journals Strontium isotope geochemistry of alluvial groundwater: a tracer for groundwater resources characterisation

2004 ◽  
Vol 8 (5) ◽  
pp. 959-972 ◽  
Author(s):  
P. Négrel ◽  
E. Petelet-Giraud ◽  
D. Widory
Keyword(s):  
River Water ◽  
Hydrological Cycle ◽  
Isotopic Ratio ◽  
Groundwater Resources ◽  
Shallow Groundwater ◽  
Alluvial Aquifer ◽  
Strontium Isotope ◽  
Rock Interaction ◽  
Massif Central ◽  
Alluvial Aquifers

Abstract. This study presents strontium isotope and major ion data of shallow groundwater and river water from the Ile du Chambon catchment, located on the Allier river in the Massif Central (France). There are large variations in the major-element contents in the surface- and groundwater. Plotting of Na vs. Cl contents and Ca, Mg, NO3, K, SO4, HCO3, Sr concentrations reflect water–rock interaction (carbonate dissolution for Ca, Mg, HCO3 and Sr because the bedrock contains marly limestones), agricultural input (farming and fertilising) and sewage effluents (for NO3, K, SO4), although some water samples are unpolluted. Sr contents and isotope ratios (87Sr/86Sr vary from 0.70892 to 0.71180 along the hydrological cycle) in the groundwater agree with previous work on groundwater in alluvial aquifers in the Loire catchment. The data plot along three directions in a 87Sr/86Sr v. 1/Sr diagram as a result of mixing, involving at least three geochemical signatures–Allier river water, and two distinct signatures that might be related to different water-rock interactions in the catchment. Mixing proportions are calculated and discussed. The alluvial aquifer of the Ile du Chambon catchment is considered, within the Sr isotope systematic, in a larger scheme that includes several alluvial aquifers of the Loire Allier catchment. Keywords: : Loire river, major and trace elements, Sr isotopic ratio, alluvial aquifer, hydrology

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

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.

scholarly journals Assessment of Hydrogeoelectrical Characteristics of Crystalline Aquifers and Groundwaters Quality in Adamawa Plateau: Case of Mbakaou (Adamawa - Cameroon)

2020 ◽  
Vol 7 (4) ◽  
pp. 153-163
Author(s):  
Arnaud Tonang Zebaze ◽  
Adoua Kopa Njueya ◽  
Maurice Kwekam ◽  
Emile Temgoua
Keyword(s):  
Rock Interaction ◽  
Piper Diagram ◽  
Basement Rocks ◽  
Fractured Aquifers ◽  
Physico Chemical ◽  
Hydrodynamic Study ◽  
Alternative Water ◽  
Chemical Water ◽  
Alternative Water Supply ◽  
Water Rock Interaction

Population in Adamawa Plateau faced to borehole failure and return to alternative water supply structures (wells and catchments) with a doubtful quality. This study was carried out to highlight the location of aquifers, their hydrodynamics characteristics and groundwaters quality in Mbakaou locality, which belong to the Adamawa Region. Combination of geological and geoelectrical surveys at 10 stations, with hydrodynamic study of 4 boreholes were carried out to characterize aquifers. Hydrochemical analysis of 10 waters samples has been done to determine physico-chemical water quality and origin of waters mineralization. Geological studies show that basement rocks, which constitute fractured aquifers, consists of a large assemblage of granitoid. Geophysics and drilling data highlight superficial aquifers located between 2 and 17 m and fractured aquifers located between 11 and 74 m, with resistivity ranging from 50 to 671 Ω.m. The borehole have yield varying between 2.80 and 5.14 m3/h. Transmissivity and permeability ranging from 10-6 to 10-5 m2/s and 10-7 to 10-6 m/s respectively, indicating that aquifers are semi-permeable. Waters are of good quality compared to WHO norms and weakly mineralized (35 to 247.9 mg/l). Piper diagram show that calcium and magnesium bicarbonate facies is dominant. Mineralisation of water is mainly influenced by water-rock interaction through silicate weathering.

The Analysis of Shallow Groundwater Quality around Laemchabang Sanitary Landfill, Chonburi, Thailand

2014 ◽  
Vol 931-932 ◽  
pp. 716-720 ◽  
Author(s):  
Witchuda Ponsai ◽  
Srilert Chotpantarat
Keyword(s):  
Ph Value ◽  
Shallow Groundwater ◽  
Sanitary Landfill ◽  
Rock Interaction ◽  
Groundwater Samples ◽  
Fe And Mn ◽  
Shallow Wells ◽  
Correlation Techniques ◽  
Water Rock Interaction

This study focused on quality of shallow groundwater collected around Laemchabang sanitary landfill Chonburi Province, Thailand. The sixteen public shallow wells were collected and analyzed for pH, cations (Ca2+, Mg2+, Na+ and K+), anions (HCO-3, Cl- and SO4 2-) and metals (As, Fe, Mn, Zn and Al). The results were reported by statistical and correlation techniques. It was found that, in some wells, metals such as Fe and Mn exceeded the acceptable limits. Thus, shallow groundwater around Laemchabang Sanitary Landfill would not be suitable for drinking. According to correlation analysis, pH value is positively correlated with HCO-3, Fe and Al. Ca2+ and Mg2+ are positively correlated with HCO-3 and Cl-. Arsenic is positively correlated with Fe and Mn. Most shallow groundwater samples in this area are the mixed type, Ca (Mg)Cl (SO4) type, which may occur from water-rock interaction and leakage from landfill to groundwater system.

scholarly journals HIDROGEOQUÍMICA DAS ÁGUAS SUBTERRÂNEAS NO MUNICÍPIO DE LENÇÓIS, BAHIA

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.

scholarly journals ECOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF SHALLOW GROUNDWATER IN SOUTHERN BUG AND SYNIUKHA INTERFLUVE AREA

2021 ◽  
Vol 26 (1(38)) ◽  
pp. 149-168
Author(s):  
D. V. Melkonyan ◽  
E. A. Cherkez ◽  
V. G. Tyuremina
Keyword(s):  
Chemical Composition ◽  
Anthropogenic Impact ◽  
Local Population ◽  
Shallow Groundwater ◽  
Anthropogenic Factors ◽  
Agricultural Activity ◽  
Rock Interaction ◽  
Priority Task ◽  
High Concentrations ◽  
Water Rock Interaction

Problem Statement and purpose. The study area encompassing the territory of about 150 km2, in August 2000, was declared as a zone of environmental emergency due to increasing pollution rates in shallow groundwater, in surface water and to health deterioration of the inhabitants of some settlements. Groundwater is widely used by the local population in numerous boreholes for domestic and agricultural purposes. In the zone of environmental emergency there are about 35 anthropogenic objects, such as: industrial and domestic landfills, pesticide and fertilizer storage, various livestock farm complexes, settling tanks, wastewater and solid waste discharges, etc. The insecurity of shallow groundwater, also its location close to the surface and in the lowest parts of the terrain leads to intensive pollution of groundwater. Besides, groundwater in relation to the fractured waters of the Precambrian crystalline rocks, which lie below and are used for drinking water supply, perform the functions of both a protective screen and a source of pollution. In this case, a multifaceted study of shallow groundwater chemical composition and their formation conditions is a priority task of this study for the environmental emergency zone and for the district as a whole. The purpose of this paper to study the chemical composition and to establish the processes and factors controlling the shallow groundwater chemistry in modern and Pleistocene sediments of the Southern Bug and Syniukha interfluve. Data and Methods. A total of 102 water samples were collected from groundwater wells and boreholes and were hydrochemically analyzed for their macrocomponent composition. Groundwater quality geochemical assessment was carried out using statistical methods in combination with conventional graphical methods by examining groundwater in the Boleslavchik village, where they are most polluted. Results. The dominant hydrochemical types of shallow groundwater are SO4- Na, HCO3-Na and mixed SO4-Mg-Na, SO4-Ca-Na types, sometimes NO3-HCO3 and NO3-Cl-Na types. These groundwater types are formed under the influence of natural and anthropogenic factors, such as water-rock interaction, evaporation-crystallization, precipitation and anthropogenic impact. In this case, water-rock interaction processes, such as silicate weathering, carbonate and sulfate dissolution, ion exchange, evaporation-crystallization and anthropogenic impact play major roles. The weathering of feldspars, chlorites and dissolution of calcites, dolomites are the primary sources for Na+, K+, Mg2+, Ca2+ ions, and dissolution of gypsum, sulfide mineralization for SO4 2– ions. High concentrations of Na+, Cl–, SO4 2–, NO3 – in shallow groundwater reflect agricultural activity as the main source of these ions.

scholarly journals Comparison Of Isotope And Hydrochemical Characteristics Of Springs In Sembalun – Rinjani Area, East Lombok, West Nusa Tenggara, Indonesia Before And After The Earthquake Events In 2018

2021 ◽  
Vol 71 ◽  
pp. 215-226
Author(s):  
Satrio Satrio ◽  
◽  
Rasi Prasetio ◽  
B. Yoseph C.S.S. Syah Alam ◽  
M. Sapari D. Hadian ◽  
...  
Keyword(s):  
Meteoric Water ◽  
Hot Spring ◽  
Hydrochemical Characteristics ◽  
Rock Interaction ◽  
Piper Diagram ◽  
Hydrochemical Data ◽  
Hydrochemical Study ◽  
Before And After ◽  
Hydrochemical Composition ◽  
Water Rock Interaction

The current 2019 isotope and hydrochemical study of hot and cold springs in Sembalun - Rinjani area is a re-assessment of previous similar study in 2012. The aim of this study is to assess the isotope and hydrochemical characteristics of springs due to the earthquake events in 2018. After the earthquake events in 2018, the stable isotopes δ18O and δ2H composition of Sebau hot spring and most of cold springs is shifted into more depleted values which may indicate water-rock interaction or interaction with cold waters which has more depleted δ18O and δ2H values. Also, Sebau hot spring is still plotted at mixing line of meteoric and andesitic water, but still dominant meteoric water. The hydrochemical data of all cold springs and Orok river show the enrichment of Na, probably from silicates weathering or the cation exhchange. While hydrochemical composition of Sebau hot spring is significantly decreased, except SO4, probably due to dilution with cold waters before the thermal water reach the surface. The Piper diagram showed that cold springs and Orok river are Ca-Mg-HCO3 type before and after the earthquake events. While Sebau hot spring is shifted from Ca-Cl type into mixed Ca-Mg-Cl type after the earthquake events. The temperature of Sebau hot spring slightly decreased from 35.5 °C to 34.8 °C after the earthquake events, while Na/K geothermometer calculation also indicate decreasing of sub-surface temperature, i.e. from 146–165 °C to 130–150 °C.

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