A comparative study on hydrochemical evolution and quality of groundwater in coastal areas of Thailand and Bangladesh

Xiong, Guiyao; Chen, Guangquan; Xu, Xingyong; Liu, Wenquan; Fu, Tengfei; Khokiattiwong, Somkiat; Kornkanitnan, Narumol; Seddique, Aahraf Ali; Shi, Xuefa; Liu, Shengfa; Su, Qiao; Xinwen, Xu

doi:10.1016/j.jseaes.2020.104336

Cited by 38 publications

(17 citation statements)

References 54 publications

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“…Sensitivity analysis showed that the influence of any one parameter on IWQI results was not strong. In brief, all indexes play a role in water quality assessment, and the IWQI does not only rely on one or a few parameters, which is consistent with other researches [ 64 ]. The results of sensitivity analysis show that the self-organizing water quality assessment method was developed correctly.…”

Section: Resultssupporting

confidence: 82%

“…As shown in Figure 5 e, the groundwater samples were mainly plotted on between the y = x and y = 0.5 x relationship lines, indicating that the weathering of carbonate rock is the main rock weathering process affecting the hydrochemical characteristics of groundwater of the study area. Generally speaking, cation exchange may be one of the important processes affecting the chemical characteristics of groundwater in a region [ 9 , 64 ]. In addition, the comparison diagram of (Ca 2+ + Mg 2+ ) − (

) and (Na + − Cl − ) was used to further illustrate the ion exchange between groundwater and its host environment.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of Groundwater Using an Integrated Approach of Entropy Weight and Stochastic Simulation: A Case Study in East Region of Beijing

Zhang

Jia

et al. 2021

IJERPH

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Groundwater is an important source of water in Beijing. Hydrochemical composition and water quality are the key factors to determine the availability of groundwater. Therefore, an improved integrated weight water quality index approach (IWQI) combining the entropy weight method and the stochastic simulation method is proposed. Through systematic investigation of groundwater chemical composition in different periods, using a hydrogeochemical diagram, multivariate statistics and spatial interpolation analysis, the spatial evolution characteristics and genetic mechanism of groundwater chemistry are discussed. The results show that the groundwater in the study area is weakly alkaline and low mineralized water. The south part of the study area showed higher concentrations of total dissolved solids, total hardness and NO3−-N in the dry season and wet season, and the main hydrochemical types are HCO3−-Ca and HCO3−-Ca-Mg. The natural source mechanism of the groundwater chemical components in Chaoyang District includes rock weathering, dissolution and cation exchange, while the human-made sources are mainly residents and industrial activities. Improved IWQI evaluation results indicate that water quality decreases from southwest to northeast along groundwater flow path. The water quality index (WQI) method cannot reflect the trend of groundwater. Sensitivity analysis indicated that the improved IWQI method could describe the overall water quality reliably, accurately and stably.

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Section: Resultssupporting

confidence: 82%

) and (Na + − Cl − ) was used to further illustrate the ion exchange between groundwater and its host environment.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Groundwater Using an Integrated Approach of Entropy Weight and Stochastic Simulation: A Case Study in East Region of Beijing

Zhang

Jia

et al. 2021

IJERPH

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“…Southern rivers close to Bay of Bengal contain saline water in major parts. During rainy season, saline water intrusion occurs frequently in this region [ 196 ]. Public perceptions is that the salinity intrusion is now more frequent thing in that region.…”

Section: River Pollution In Bangladeshmentioning

confidence: 99%

“…Extensive use of inorganic fertilizer, pesticides and insecticides affect ground water all over the country. Higher concentrations of nitrate, ammonia, dichlorodiphenyltrichloroethane (DDT), Fe, Mn, Ni, Co, B and Arsenic were found in ground water from several parts of the country [ 196 ]. Natural processes and anthropogenic activities are polluting river and ground water continuously.…”

Section: Accumulation Of Metals Into the Ground Watermentioning

confidence: 99%

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Uddin

Jeong

2021

Heliyon

131

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River water is very much important for domestic, agriculture and industrial use in Bangladesh which is in critical condition from long time based on research data. During last 40 years, extreme pollution events occurred in peripheral rivers surrounding Dhaka city and Karnaphuli River in Chittagong city. Present data showed that other urban rivers are also in critical condition especially Korotoa, Teesta, Rupsha, Pashur and Padma. The pollutants flowing with water made a severe pollution in downstream areas of rivers. Metals concentrations in river water was found to be higher in dry season. Dissolve oxygen (DO) was nearly zero in Buriganga River and several points in Turag, Balu, Sitalakhya and Karnaphuli River. NO 3 - , NO 2 - and PO 4 3- pollution occurred in different rivers. Zn, Cu, Fe, Pb, Cd, Ni, Mn, As and Cr concentration was above drinking water standard in most of the river and some metals was even above irrigation standard in water from several rivers. Sediment data showed very much higher metal concentrations in most of the rivers especially peripheral rivers in Dhaka and Karnaphuli, Korotoa, Teesta, Rupsha and Meghna River. Metal concentrations in sediment was above US EPA threshold value in most of the rivers. Metal concentrations in fish and agricultural crops showed that bioaccumulations of metals had occurred. The concentration of metals showed the trend like: water

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“…Water is one of the most valuable but vulnerable natural resource in the world. With the explosive population increase and rapid industrial development, water resource has been significantly overexploited and polluted [1][2][3]. Of note, limited reserves and irregular distribution of surface water lead to it is not being available in many regions of the world, and thus groundwater would be the solely alternative for human society.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Analysis and Geochemical Signatures of Shallow Groundwater in the Main Urban Area of Chongqing, Southwestern China

Chen

Tang

Jian

et al. 2020

Water

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Hydrogeochemical processes and quality assessment for shallow groundwater are pivotal issues to be solved in many regions over the world due to the easy access of shallow groundwater. In this study, eighty-six water samples were collected from shallow aquifers of Chongqing, China, during July–September 2019. Multivariate statistical techniques, major ion ratios, and geochemical modeling were integrated to investigate hydrogeochemical characteristics and controlling factors. Afterwards, groundwater quality in spatial was classified by entropy-weighted water quality index and geographic information system (GIS) spatial analysis. Groundwater samples were alkaline and possessed high total dissolved solids (TDS) values. Two-group samples were distinguished as mix cations-HCO3-SO4 (group 1) and Ca-Mg-SO4 (group 2) facies. Hydrogeochemical compositions of group 1 samples were dominated by silicate dissolution and ion exchange, while sulfate and calcite dissolution were the main factors influencing the hydrogeochemical characteristics of group 2. The overall quality of groundwater samples varied greatly from excellent quality to extremely poor quality. Group 1 samples were found with excellent and good quality and suitable for drinking purposes. Group 2 samples were all unsuitable for direct drinking purposes as the quality varied from medium to extremely poor, but were spatially limited. Groundwaters with relatively poor quality were due to dissolution of sulfate that were locally enriched in the aquifers. The new findings of this study are expected to provide the reference for future management and sustainable exploitation of groundwater in Chongqing.

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A comparative study on hydrochemical evolution and quality of groundwater in coastal areas of Thailand and Bangladesh

Cited by 38 publications

References 54 publications

Evaluation of Groundwater Using an Integrated Approach of Entropy Weight and Stochastic Simulation: A Case Study in East Region of Beijing

Evaluation of Groundwater Using an Integrated Approach of Entropy Weight and Stochastic Simulation: A Case Study in East Region of Beijing

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Multivariate Analysis and Geochemical Signatures of Shallow Groundwater in the Main Urban Area of Chongqing, Southwestern China

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