Journal articles: 'Groundwater – Pollution'

1

Attoui, Badra, Samia T. Benrabah, Habiba Majour, and Nadjet Zair. "Assessment of groundwater vulnerability to pollution using the Kherici’s method in the Talezza plain, Collo region (NE Algeria)." Journal of Water and Land Development 33, no. 1 (June 1, 2017): 23–30. http://dx.doi.org/10.1515/jwld-2017-0015.

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Abstract The intrinsic vulnerability of groundwater aquifers refers to their sensitivity to all contamination coming from soil surface irrespective of the nature of the polluting. In order to improve the protection of groundwater, there must be a reduction in the infiltration of contaminants towards the reservoir through the impacting factors determination of this phenomenon by means of research. There are collected models that include particular number of factors which allow the determination of a sign of groundwater vulnerability of all superficial pollutions. The goal of the study centers on ascertaining the state of vulnerability and the risk of groundwater pollution of the Collo region with a new proposed method by Kherici. Generally, assessment methods of vulnerability and the danger of groundwater pollution employ parametric systems with numerical quotation, cartographic superposition where the analytical methods are based on equations. In this study, we consider the combination of criteria dependent on natural factors (thickness of the unsaturated zone, geologic facies, degree of auto-purification) and the causes of groundwater vulnerability to man-made pollution (anthropogenic factors).

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Zhang, Xuan, and Jin Yang. "The Application of Geophysical Methods in Groundwater Pollution Detection." Applied Mechanics and Materials 644-650 (September 2014): 1209–12. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.1209.

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Groundwater refers to the subsurface water that occurs beneath the water table in geological formation that are fully saturated. 95% of the water used for human production and living comes from groundwater. But now, the pollution degree of groundwater resources is serious, which is a serious threat to human. In order to capture groundwater pollution's situation, groundwater pollution detection should be carried out. Because of the geophysical methods are of low cost, high speed and the characteristics of in-situ nondestructive, people often used geophysical methods for groundwater pollution detection. Geophysical prospecting contains a lot of methods, and the researchers often use resistivity sounding method, ground penetrating radar method, high density resistivity method and seismic reflection method to detect the pollution condition of groundwater.

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Stevenazzi, Stefania. "Groundwater vulnerability or groundwater pollution risk?" Rendiconti Online della Società Geologica Italiana 41 (November 2016): 84–87. http://dx.doi.org/10.3301/rol.2016.99.

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Kott, Y. "Groundwater pollution microbiology." Journal of Hydrology 84, no. 1-2 (April 1986): 192–94. http://dx.doi.org/10.1016/0022-1694(86)90055-7.

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Kaushik, Aditya, Anusuya Gangopadhyay, Sarah Iqbal, and S. Priya. "Geogenic Groundwater Pollution." Current Science 115, no. 3 (August 1, 2018): 379. http://dx.doi.org/10.18520/cs/v115/i3/379-381.

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R., Venkata Ramana. "Groundwater Pollution in Nanduru Region in Andhrapradesh." International Journal of Psychosocial Rehabilitation 24, no. 5 (April 20, 2020): 2925–29. http://dx.doi.org/10.37200/ijpr/v24i5/pr201998.

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Blanchard, Allechy Fabrice, Lasm Théophile, Youan Ta Marc, Yao Kouadio Assemien François, Kouakou Ourapa Suzane, Oka Koua Armel Raphaël, Baka Derving, and De Lasme Omer Zephir. "Cartographie De La Vulnérabilité À La Pollution Des Aquifères Du Socle Précambrien : Cas De La Région D’oumé (Centre-Ouest De La Côte D’ivoire)." European Scientific Journal, ESJ 12, no. 20 (July 30, 2016): 374. http://dx.doi.org/10.19044/esj.2016.v12n20p374.

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Development of agricultural and mining activities and the rapid growth of the population (3.8%) in Oumé’s area, constitute a potential risk of groundwater’s pollutions. This study interested Oumé’s area and aims to elaborate a map of vulnerability to pollution for a better management of groundwaters. The database is constituted by various data in particular, geological, hydrogeological, geomorphological, pluviometric data and satellite image. Methods DRASTIC and GOD were used in this study. Results of DRASTIC method indicated that 31.86% of study area have a very low vulnerability, 68.12% a low vulnerability and 0.02% a moderate vulnerability. With GOD method, 12.8% of study area have a very low vulnerability, 86.46% a low vulnerability and 0.74% a moderate vulnerability. The chemical analysis of groundwater showed that weaker rates of nitrates (0-14mg/l) registered inside the surely well protected zones. These observations have led to validate some various maps obtained. Result of the test of Kappa revealed that coefficient K is reliable and gave moderate agreement (K=0.43) between both methods. This agreement is confirmed by the surface analysis (79.01%). In this study, the DRASTIC method supplied better results and is thus better adapted for the evaluation of vulnerability in the pollution of groundwater of this area.

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Qi, Fu Li, Meng Cai Zhang, Hui Jin, Yong Li Li, Shou Gang Lu, Feng Long Zhang, Yong Quan Sun, and Yi Liang Wang. "Groundwater Pollution Investigation and Remediation." Advanced Materials Research 1092-1093 (March 2015): 1150–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1150.

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Groundwater is an important part of the human living space and supplies us with high-quality freshwater resources. However, the intrusion of any foreign matter into groundwater may cause groundwater pollution. Once this happens, clearing, control and remediation can be very difficult: not only does it need a lot of money, it is also technically challenging and time consuming. In view of current research on groundwater remediation in and out of China, we propose a package of groundwater pollution investigation, groundwater pollution remediation technology and groundwater pollution control processes with a view to providing theoretical reference for future groundwater pollution remediation efforts.

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Bai, Li Ping, Ye Yao Wang, and Fa Sheng Li. "Research on GIS-Based Risk Assessment Method of Groundwater Pollution and its Application." Advanced Materials Research 356-360 (October 2011): 819–24. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.819.

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The risk assessment model and parameter system of groundwater pollution were established in this paper. The multi-index evaluation method of groundwater pollution sources was proposed, and the GIS-based risk assessment method of groundwater pollution was produced in comprehensive consideration of groundwater vulnerability and groundwater pollution sources. The multi-index method suggested in this paper was used in the risk assessment of groundwater pollution at a plain area of a big city in North China, and the different grades of groundwater pollution risk were computed. The evaluation results show that the groundwater pollution risk is determined by the combined action of ground pollution sources and groundwater vulnerability. The established risk assessment method of groundwater pollution could give a scientific support for the regional groundwater pollution prevention and control planning.

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Ogunba, Adebola. "Sustainable groundwater management in Lagos, Nigeria: the regulatory framework." Afrika Focus 28, no. 2 (February 26, 2015): 146–55. http://dx.doi.org/10.1163/2031356x-02802010.

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This doctoral research focuses on groundwater degradation in Lagos, Nigeria. Groundwater is a fundamental natural resource in Lagos that is presently troubled by pollution emanating from solid waste and wastewater. The city generates 10,000 metric tons of waste and 350 million gallons of wastewater daily, all of which are improperly managed and are heavily polluting its groundwater. This direct environmental pollution is aggravated by indirect problems of over-urbanization, and legal and institutional shortcomings. Over-urbanization in Lagos has resulted into a monumental population of 21 million people in the tiny city, which generates the enormous quantities of solid waste and wastewater. The population places a tremendous burden on the city’s water resources, forcing residents to revert to groundwater which is suffering the plight of pollution, and hence the concern of this research. The pollution problem is worsened by civic apathy to environmental matters, and unresolved by a nascent water sector whose evolving governance structures do not adequately address the multi-dimensional pollution problem. In the final analysis, the absence of holistic and comprehensive groundwater legislation that addresses all these problems challenges the sustainability of this vital resource. The research study contributes to knowledge by attempting to provide broad and holistic recommendations for law reform which address the pollution, management of the effects of over-urbanization and overpopulation on groundwater, and the strengthening of institutions to achieve a sustainable groundwater resource.

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Talabi, Abel O., and Tosin J. Kayode. "Groundwater Pollution and Remediation." Journal of Water Resource and Protection 11, no. 01 (2019): 1–19. http://dx.doi.org/10.4236/jwarp.2019.111001.

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12

Goldberg, Sabine. "Geochemistry, Groundwater and Pollution." Vadose Zone Journal 5, no. 1 (January 2006): 510. http://dx.doi.org/10.2136/vzj2005.1110br.

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13

Crawford, Ronald L. "Bioremediation of groundwater pollution." Current Opinion in Biotechnology 2, no. 3 (June 1991): 436–39. http://dx.doi.org/10.1016/s0958-1669(05)80152-1.

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14

Pac̆es, Tomas. "Geochemistry, groundwater and pollution." Geochimica et Cosmochimica Acta 58, no. 3 (February 1994): 1212. http://dx.doi.org/10.1016/0016-7037(94)90585-1.

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15

Van Der Molen, W. H. "Geochemical, groundwater and pollution." Journal of Hydrology 155, no. 1-2 (March 1994): 295–96. http://dx.doi.org/10.1016/0022-1694(94)90172-4.

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Man, Kai, Zhen Min Ma, and Xiu Jin Xu. "Research on the Mechanism of Sulfate Pollution of Groundwater in Jiaozuo Area." Applied Mechanics and Materials 665 (October 2014): 436–39. http://dx.doi.org/10.4028/www.scientific.net/amm.665.436.

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Based on the distribution of sulfate in groundwater of Jiaozuo Area, pollution sources can influence the groundwater were analyzed. The results show that sulfate pollution in groundwater of Jiaozuo Area is serious; industrial pollution is the main reason for sulfate pollution in groundwater; sewage irrigation and overcommitting fertilizers are the important reason for the sulfate pollution in groundwater; mine drainage and the overexploitation of groundwater can accelerate the sulfate pollution in groundwater.

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17

Liu, Jingchao, Jin Wu, Shaowei Rong, Yanna Xiong, and Yanguo Teng. "Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China." Sustainability 14, no. 21 (November 4, 2022): 14483. http://dx.doi.org/10.3390/su142114483.

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Groundwater pollution in karst areas is often the result of the interaction of hydrogeological characteristics and human activities. In this study, a chimeric evaluation system of groundwater vulnerability and pollution load was constructed, and the groundwater contamination risk was intuitively displayed using a risk map. The study area is located in Qiannan, a typical karst area in Southwest China. Groundwater vulnerability was mainly calculated using the PLEIK model. Pollution source load evaluation was evaluated using the classification method. The groundwater pollution status was evaluated by the CCME WQI method. The results show that the groundwater vulnerability in the research area was mainly at a medium level. The areas with high pollution load values were mainly distributed in industrial parks and other pollution-source-gathering areas. The results of the water quality evaluation show that the groundwater quality in the study area was generally good. However, the impact of some pollution sources on the surrounding groundwater still cannot be ignored. The results reveal the risk level of groundwater pollution in typical karst areas and provide theoretical support for regional groundwater protection.

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Prasetya, Dimas Ardi, I. Putu Santikayasa, and Iqbal Hanun Azizi. "Analisis Indeks Pencemaran Airtanah di DKI Jakarta dengan Interpolasi Spasial." Jurnal Teknik Sipil dan Lingkungan 6, no. 3 (December 31, 2021): 177–86. http://dx.doi.org/10.29244/jsil.6.3.177-186.

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Everyone needs water to his life and his activity. Groundwater pollution is one of the problems in Indonesia. The increasing number of the show an increase water needs. They were filled with groundwater needs. There has been decreasing groundwater that is occupied in quantity and quality. The research was done in Jakarta, consisting of 42 sub-district. Research takes into account the condition of the dry season. Uses index research quality of groundwater pollution. Monitoring parameter groundwater consisting of physics, chemical and biology paramater. The research consists of determining the pollution index in Jakarta, analysis of groundwater pollution, and predicted entanglement with an index pollution population density. The research uses spatial interpolation to determine locations. Pollution index calculation used calculation storet. The measurement results in the rate used in the analysis index groundwater pollution. The research results obtained index value has increased pollution are on the north and central of Jakarta. The research results obtained East Jakarta having the condition geology that porous. The value of the groundwater pollution index was in north Jakarta. The results of the study indicated by a map pollution index the quality of groundwater during three periods. Index pollution in Jakarta consisting of pollution until the same as the quality standard. Research shows the absence of correlation with the population with the pollution groundwater quality.

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Abed, Mahmood F., Ghazi Atiya Zarraq, and Salwa H. Ahmed. "Assessment of Groundwater Pollution using Aqueous Geo-Environmental Indices, Baiji Province, Salah Al-Din, Iraq." Iraqi Geological Journal 55, no. 1B (February 28, 2022): 94–104. http://dx.doi.org/10.46717/igj.55.1b.9ms-2022-02-25.

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The study area is located in Baiji province characterized by anthropogenic activities which may affect the groundwater quality. Therefore, the present work was intended for assessing groundwater quality and its suitability for drinking. Groundwater samples were collected from 33 different well, then analyzed to determine 20 parameter which are TDS, Ca, Mg, Na, K, Cl, SO4, NO3, Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn, As, B and Se. Nemerow Pollution Index Synthetic Pollution Index, and Pollution Index of Groundwater were used for determining groundwater suitability for human consumption. Nemerow Pollution Index values indicate that groundwater pollution is ranged from seriously to moderately polluted. According to Synthetic Pollution Index results, the water samples were moderately polluted to unsuitable for drinking. Depending on the rating of Pollution Index of Groundwater values, groundwater was polluted.

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Bai, Liping, Yeyao Wang, Youya Zhou, Li Liu, Zengguang Yan, and Fasheng Li. "Research on the process-based risk evaluation method of groundwater pollution for contaminated site." Water Supply 16, no. 1 (August 13, 2015): 150–62. http://dx.doi.org/10.2166/ws.2015.118.

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A universal method to evaluate groundwater pollution risk with the site scale has not been established. The groundwater pollution risk is commonly evaluated by overlaying the results of groundwater vulnerability and pollution sources, but this method is inapplicable for contaminated sites. Considering the current supervision demands of groundwater pollution in China, this paper suggests a risk evaluation method for contaminated sites. The present and forecasted groundwater pollutant concentrations and the variation trend of groundwater quality were used to get the risk classes of groundwater pollution. Chromium is one of the most common groundwater contaminants found at industrially contaminated sites. A chromium residue disposal site in Baotou, China was selected as the study area. The groundwater flow model and solute transport model were constructed by MODFLOW and MT3DMS. Based on the simulation results of the numerical model, the groundwater pollution risk of the contaminated site was divided into four classes, and the regulation measures of groundwater pollution were suggested. This study could provide guidance for the environmental supervision and management of contaminated sites.

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Asrifah, RR Dina, Ika Wahyuning Widiarti, Praditya Anggi Widhiananto, Lailiyatun Ni’ma, Dzulfiqar Izzatur Rahman, Aliendina Jwalita, and Hafidz Romizah. "Groundwater Vulnerability towards Pollution in Area Around the Piyungan Landfill, Bantul Regency, D. I. Yogyakarta." RSF Conference Series: Engineering and Technology 1, no. 1 (December 23, 2021): 432–52. http://dx.doi.org/10.31098/cset.v1i1.416.

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The Piyungan landfill is located in Bantul Regency, Daerah Istimewa Yogyakarta, still uses an open dumping system. The open dumping system produced more quantity of leachate from other systems. Leachate spreads to the ground and seeps into the ground to the groundwater surface. These conditions have an impact on the environment. This study aims to assess the groundwater vulnerability to leachate contamination in the area around the Piyungan landfill. The research method used is survey and mapping, and data analysis is carried out using the Le Grand method. Geographic Information System (GIS) is also used to visualize data into maps. The Le Grand method considers as many as 5 physical environmental parameters, including the groundwater depth, absorption above ground, aquifer permeability, groundwater slope, and horizontal distance of wells with pollutant sources. Next, scoring is carried out for each of these parameters, and then a groundwater vulnerability map is made using the overlay method. The results of the study were three classes of the potential vulnerability of groundwater pollutions. That were large pollution potential (may or may be polluted), medium pollution potential (maybe polluted but slightly), and small pollution potential (very difficult to pollute).

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Ahmad, Ali Bawasheakh, and Akram O. Esmail. "Some heavy Metal pollution investigation in Sulaimani province groundwater." Journal of Zankoy Sulaimani - Part A 17, no. 4 (May 31, 2015): 37–50. http://dx.doi.org/10.17656/jzs.10423.

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23

Xiong, Yanna, Jingchao Liu, Wenchao Yuan, Weijiang Liu, Shaobing Ma, Zhiyu Wang, Tongtong Li, Yanwei Wang, and Jin Wu. "Groundwater Contamination Risk Assessment Based on Groundwater Vulnerability and Pollution Loading: A Case Study of Typical Karst Areas in China." Sustainability 14, no. 16 (August 10, 2022): 9898. http://dx.doi.org/10.3390/su14169898.

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Groundwater contamination risk assessment is an important basis to support the protection of the groundwater ecological environment. In this research, the groundwater contamination risk in typical karst areas in China was evaluated by PLEIK model (P: protective cover; L: land use; E: epikarst development; I: infiltration conditions; K: karst development) and classification and discrimination methods were used to assess groundwater vulnerability and pollution source load; the water quality index method was used to assess the status of groundwater contamination in the research area. The results show that groundwater vulnerability values in the research area range from 3.04 to 7.79, and most areas have low groundwater vulnerability. Groundwater pollution loading indexes, in the region of the pollution sources, gathered numerical up-water quality status evaluation that shows that most of the regional groundwater quality in the research area has good groundwater at present. The groundwater contamination risk assessment results show that the groundwater pollution risk is mainly at a very low level in most areas of the study area, but the groundwater pollution risk is higher in the areas where the pollution sources gather. The result reveals that the regional groundwater contamination risk level for regional groundwater ecological environment protection provides a theoretical basis for policy making.

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Guo, Chao, and Xie Xiao. "Influence of Infiltration Facilities on Groundwater and Research Status of Groundwater Visualization." Frontiers in Science and Engineering 3, no. 6 (June 20, 2023): 40–43. http://dx.doi.org/10.54691/fse.v3i6.5120.

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The rise of "sponge city" construction in China has promoted the development of recharge facilities such as rainwater gardens and rainwater seepage wells, but there is a lack of research on the impact of practical projects on groundwater. Rainwater infiltration has the risk of polluting groundwater, so recharging groundwater in these ways may increase the risk of secondary pollution of groundwater. Visualization technology can reveal the occurrence conditions, dynamic characteristics and movement changes of groundwater, and reveal the hydrogeological conditions in the study area.

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Irfeey, Abdul Munaf Mohamed, Mohamed M. M. Najim, Bader Alhafi Alotaibi, and Abou Traore. "Groundwater Pollution Impact on Food Security." Sustainability 15, no. 5 (February 26, 2023): 4202. http://dx.doi.org/10.3390/su15054202.

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Global food security challenges have been burdened by a rapidly expanding population and its attendant food demands. Safer and higher-quality agriculture is one of the most essential solutions for addressing the growing problem. In agriculture that is safer, the quality of irrigation from a safer water source will boost food security. Groundwater is one of the most widely utilized water sources for agriculture. Safeguarding groundwater against contamination and preserving water resources is a rising global concern. Herein, previous literature studies were analyzed to determine the groundwater potential for food production of the various continents around the globe, as well as the various types of groundwater contamination, the sources of groundwater contamination, and the best methods for combating groundwater contamination in order to guarantee safe irrigation for agriculture and thus achieve food security. Consequently, the natural and anthropogenic activities that degrade the quality of the groundwater and transform it into contaminated water from harmful organisms, residues of organic and inorganic soluble and non-soluble salts of the groundwater from chemical, leachate from landfills, sewage systems, and biological contamination, are the major issues in safer agriculture, causing a number of problems in the growth of agricultural crops and leading to a negative impact on food production as well as on the health of the population. Proper identification of different sources of contamination and proper methods to prevent contamination from reaching groundwater, as well as governmental and institutional frameworks to combat contamination and treatment methods to treat contaminated groundwater, will contribute to the future achievement of food security by ensuring a safer irrigation method and agriculture.

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Medvid, Halyna, Luibov Yanush, Tatiana Solovey, Dmytro Panov, and Vasyl Harasymchuk. "Assessment of groundwater vulnerability within the cross-border areas of Ukraine and Poland." 58, no. 58 (June 1, 2023): 73–84. http://dx.doi.org/10.26565/2410-7360-2023-58-06.

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Problem statement. The growing global trend of groundwater consumption and excessive groundwater abstraction in many parts of the world requires an accurate and comprehensive assessment of the potential for groundwater resource development. The EU-WATERRES international project has begun developing a concept for coordinated management and harmonized monitoring of groundwater resources in the transboundary areas of Ukraine and Poland. Studying groundwater's natural protection status or vulnerability is a priority, as groundwater pollution has become a significant environmental problem in recent decades due to the growth of industrial production and agricultural activities. Study objective is to analyze the existing materials on the natural protection of groundwater within the study area and to quantify the vulnerability of the main useful aquifer (MUA) to surface pollution in the cross-border Polish-Ukrainian area. Methodology involves the quantitative method of groundwater vulnerability assessment by calculating the time of pollutant penetration into the aquifer through the aeration zone using the modified Bindemann formula and GIS. Research results. Studies have shown that the most vulnerable among MUA there is an unconfined alluvial Quaternary horizon (alQ) of the Syan and Dniester River basins. Throughout its entire development, its vulnerability corresponds to the "very high" category because of pollution from the surface caused by precipitation filtration. The Upper Cretaceous aquifer (K2) is less vulnerable. The groundwater of this horizon in the Polish part of the cross-border area is more vulnerable - here the vulnerability corresponds to the categories "very high" and "high". In the Ukrainian part, the Upper Cretaceous aquifer is characterized by better natural hydrogeological conditions and is less vulnerable to pollution. The Lower Neogene aquifer, which has a limited distribution on the slopes of the Western Bug-Syan River watershed within Roztochia, is the least vulnerable to pollution as compared to the others. The lithological composition of the aeration zone and the thickness of weakly permeable and practically impermeable rocks have a decisive impact on the filtration time and vulnerability of groundwater to pollutants from the surface by infiltration. Scientific novelty of the research. For the first time, a quantitative assessment of the vulnerability of the MUAs for the Polish-Ukrainian cross-border area was carried out. The use of the results of this assessment will facilitate the adoption of appropriate management decisions for the comprehensive protection of transboundary groundwater, prevention of its pollution, and reduction of anthropogenic impact.

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Zuo, Rui, Xiaojuan Chen, Bin Wang, Dan Shan, Jie Yang, Xianbo Li, Jinsheng Wang, and Yanguo Teng. "Pollution risk evaluation of regional groundwater based on sources apportionment of pollution." Water Supply 18, no. 4 (September 29, 2017): 1294–307. http://dx.doi.org/10.2166/ws.2017.196.

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Abstract Pollution sources are determined by source apportionment, and are used as human-influenced factors to calculate the pollution risk of regional groundwater. In this case study, 266 samples of shallow groundwater were collected from the Lower Liaohe River Plain in northeastern China. Hydrochemical indexes of NH4+, Ca2+, Cl−, F−, HCO3−, Pb, Mg2+, NO3−, NO2−, K+, Na+, SO42−, total Cr, chemical oxygen demand, total dissolved solids, and total hardness of each sample were determined. Factor analysis method was used to identify potential pollution sources. Five common factors (agricultural activities, groundwater extraction, industrial activities, river pollution, and sewage discharges) represented 77.10% of the total variance. The results showed that the relatively high pollution risk mainly occurred in the west, with 19.91% of the area. The southeastern area showed a low risk of pollution, covering only 1.07% of the study area. Clearly, human activities have significantly changed the distribution of regional groundwater pollution risk in the study area.

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Zhang, Wei, Shao Gang Dong, Ding Ding Wu, and Ling Feng Zhang. "The Summary of Groundwater Contamination." Advanced Materials Research 726-731 (August 2013): 2355–62. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.2355.

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Groundwater is widely distributed and stability changed.It is the ideal drinking water with good quality and easy application.As well as, it is an important water supply source of the life, industry and agriculture.However, groundwater pollution can't be ignored in China.In this paper, groundwater pollution,groundwater vulnerability evaluation and groundwater water pollution remediation technologies are reviewed through reading a lot of theses in China and other countries. The groundwater vulnerability evaluation of DRASTIC and based on the GIS technology are mainly introduced. According to the evaluation results, appropriate pollution remediation technologies are taken, so as to protect and repair groundwater. I hope this paper can provide some theoretical suggestions for the sustainable development of groundwater in China.

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Sun, Ying, Jinlong Zhou, Yinzhu Zhou, Yanyan Zeng, and Yunfei Chen. "Influencing Factors of Groundwater Organic Pollution around the Bosten Lake Area of Xinjiang, China." E3S Web of Conferences 98 (2019): 09029. http://dx.doi.org/10.1051/e3sconf/20199809029.

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To study the status and influencing factors of groundwater organic pollution around the Bosten Lake area (Kaidu River-Kongque River Basin), Xinjiang, China, the pollution index method was applied to 82 groundwater samples and 15 lake water samples for comprehensive pollution evaluation. Results showed that the detection rates of organic pollutants in groundwater and lake water samples in the study area are 24.4% and 6.7%, respectively, but all the water samples have concentrations of organic pollutants less than the standard water quality limits. There are 11 unpolluted groundwater samples, 8 mildly polluted groundwater samples and one mid-polluted groundwater sample, accounting for 13.4%, 9.8% and 1.2% of total groundwater samples, respectively. The detection points of groundwater organic pollutants in the study area are mainly distributed in the piedmont plain area in the northern Yanqi Basin, the Yanqi County and the northwestern plain area of Bosten Lake. Some points sporadically distributed in the urban area in Korla. Groundwater organic pollution around the Bosten Lake area is mainly affected by industrial pollution, agricultural pollution, domestic pollution, vadose zone lithology, surface water quality and land utilization type.

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Shamsuddin, Aida Soraya, Nurfashareena Muhamad, Aziemah Zulkifli, and Nur Maizatul Idayu Othman. "Application of isotope as a nuclear technique in groundwater pollution assessment due to human activities." Warta Geologi 50, no. 1 (April 24, 2024): 15–26. http://dx.doi.org/10.7186/wg501202403.

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Clean and sustainable groundwater is an important asset for human life and ecosystems. However, the threat of groundwater pollution is increasing as a result of human activities such as industrial, agricultural, and municipal. The objective of this review article is to examine how isotope techniques, as one of the nuclear techniques serve as an effective tool in studying, detecting, and understanding the issue of groundwater pollution stemming from anthropogenic activity on the surface. This article covers the description and discussion of the types of isotopes used in the detection of groundwater pollution and factors that influence the variation in the composition of isotopes in groundwater based on the findings of previous studies. In addition, this article also comments on the study of groundwater pollution using isotopes in the context of groundwater pollution assessment in Malaysia. This article serves as a guide or reference to researchers, environmental professionals, and water resources managers who want to understand and implement nuclear techniques in the monitoring and assessment of groundwater pollution. This article also outlines a holistic view on the resolution of groundwater pollution issues through the application of nuclear techniques and isotopes as a significant tool in ensuring sustainable environmental management.

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Hartland, Adam, Graham D. Fenwick, and Sarah J. Bury. "Tracing sewage-derived organic matter into a shallow groundwater food web using stable isotope and fluorescence signatures." Marine and Freshwater Research 62, no. 2 (2011): 119. http://dx.doi.org/10.1071/mf10110.

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Little is known about the feeding modes of groundwater invertebrates (stygofauna). Incorporation of sewage-derived organic matter (OM) into a shallow groundwater food web was studied using fluorescence and stable isotope signatures (δ13C and δ15N). Organic pollution was hypothesised to limit sensitive species’ abundances along the contamination gradient and isotope signatures of stygofauna consuming sewage-derived OM were expected to be enriched in δ15N. Stygofauna communities near a sewage treatment plant in New Zealand were sampled over 4 months and microbial biofilms were incubated in situ on native gravel for 1 month. As anticipated, OM stress-subsidy gradients altered stygofauna composition: the biomass of oligochaetes and Paraleptamphopus amphipods increased in OM-enriched groundwater (higher dissolved organic carbon (DOC) and tryptophan-like fluorescence), whereas other, probably less-tolerant taxa (e.g. ostracods, Dytiscidae) were absent. Isotopic signatures for stygofauna from polluted groundwater were consistent with assimilation of isotopically enriched sewage-N (δ15N values of 7–16‰), but highly depleted in δ13C relative to sewage. Negative 13C discriminations probably occur in Paraleptamphopus amphipods, and may also occur in oligochaetes and Dytiscidae, a finding with implications for the application of δ13C for determining food sources in groundwaters. Organic pollution of groundwaters may have serious repercussions for stygofauna community structure with potentially irreversible consequences.

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Hu, Li Tang, Tong Gao, and Jing Rui Wang. "Groundwater Pollution Risk Assessment in the Quanzhou Area." Advanced Materials Research 807-809 (September 2013): 1469–72. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.1469.

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Groundwater pollution under the intense of human activities in the Quanzhou coastal area strongly threatens the supply safety of groundwater sources. Based on hydrogeological conditions and the pollution load in this field, the multi-index evaluation method of pollution sources and improved DRASTIC model were employed to assess groundwater pollution risk. The rating and weights of each important factor were determined by expert evaluation method and three-level groundwater pollution risk index were obtained using ARCGIS software. The results show that groundwater pollution risk at the industrial-intensive areas are dominant. So it is necessary for government to control the emmision of pollutant from inducstry in the Quanzhou area.

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Jing, Ping. "Research on Groundwater Pollution with Contour Line Realization Methods Based on Monitoring Data by COMGIS." Advanced Materials Research 908 (March 2014): 485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.908.485.

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Groundwater pollutions visualization can be come true by interpolation with monitoring data, which is very helpful to know the situation of regional pollution. In this paper, the spatial database is constructed by GIS software, it is used to manage the monitoring data dynamically, adopting the component GIS, the monitoring data can be easily loaded into the developing environment, by the contour and contour line method, the contour line of groundwater pollutants can be acquired, which is very important to visualize the regional pollution situation.

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34

Lytton, L., S. Howe, R. Sage, and P. Greenaway. "Groundwater pollution risk assessment methodology." Water Science and Technology 47, no. 9 (May 1, 2003): 1–7. http://dx.doi.org/10.2166/wst.2003.0478.

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A generic groundwater pollution risk assessment methodology has been developed to enable the evaluation and ranking of the potential risk of pollution to groundwater abstractions. The ranking can then be used to prioritise risk management or mitigation procedures in a robust and quantifiable framework and thus inform business investment decisions. The risk assessment considers the three components of the pollution transport model: source - pathway - receptor. For groundwater abstractions these correspond to land use (with associated pollutants and shallow subsurface characteristics), aquifer and the abstraction borehole. An hierarchical approach was chosen to allow the risk assessment to be successfully carried out with different quality data for different parts of the model. The 400-day groundwater protection zone defines the catchment boundary that forms the spatial limit of the land use audit for each receptor. A risk score is obtained for each land use (potential pollution source) within the catchment. These scores are derived by considering the characteristics (such as load, persistence and toxicity) of all pollutants pertaining to each land use, their on-site management and the potential for the unsaturated subsurface to attenuate their effects in the event of a release. Risk scores are also applied to the aquifer characteristics (as pollutant pathway) and to the abstraction borehole (as pollutant receptor). Each risk score is accompanied by an uncertainty score which provides a guide to the confidence in the data used to compile the risk assessment. The application of the methodology has highlighted a number of problems in this type of work and results of initial case studies are being used to trial alternative scoring methods and a more simplified approach to accelerate the process of pollution risk assessment.

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35

MURAOKA, Kohji. "Recent aspects on groundwater pollution." Doboku Gakkai Ronbunshu, no. 405 (1989): 25–41. http://dx.doi.org/10.2208/jscej.1989.405_25.

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Canora, Filomena, and Francesco Sdao. "Groundwater Vulnerability to Pollution Assessment." Water 14, no. 14 (July 12, 2022): 2205. http://dx.doi.org/10.3390/w14142205.

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Kurwadkar, Sudarshan. "Groundwater Pollution and Vulnerability Assessment." Water Environment Research 89, no. 10 (October 1, 2017): 1561–77. http://dx.doi.org/10.2175/106143017x15023776270584.

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38

Freeze, Allan. "Modeling groundwater flow and pollution." Canadian Geotechnical Journal 25, no. 4 (November 1, 1988): 851–52. http://dx.doi.org/10.1139/t88-098.

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Zamil Al-Sudani, Hussein Ilaibi. "A Review on Groundwater Pollution." International Journal of Recent Engineering Science 6, no. 5 (October 25, 2019): 13–21. http://dx.doi.org/10.14445/23497157/ijres-v6i5p103.

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40

VAN HERWAARDEN, ONNO A., and JOHAN GRASMAN. "DISPERSIVE GROUNDWATER FLOW AND POLLUTION." Mathematical Models and Methods in Applied Sciences 01, no. 01 (March 1991): 61–81. http://dx.doi.org/10.1142/s0218202591000058.

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By solving asymptotically the Dirichlet problem for the backward Kolmogorov equation describing the random walk of a particle in a dispersive flow, it is computed at what rate contaminated particles cross the boundary of a protected zone. The method also yields an estimate of the expected arrival time.

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41

Konikow, Leonard F. "Modeling Groundwater Flow and Pollution." Eos, Transactions American Geophysical Union 69, no. 45 (1988): 1557. http://dx.doi.org/10.1029/88eo01182.

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42

Glueke, C. G. "Numerical Models in Groundwater Pollution." Waste Management 22, no. 7 (November 2002): 838–39. http://dx.doi.org/10.1016/s0956-053x(02)00033-8.

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McCulloch, J. S. G. "Groundwater — Drought, pollution and mangement." Journal of Hydrology 165, no. 1-4 (February 1995): 377. http://dx.doi.org/10.1016/0022-1694(95)90003-9.

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44

Winkler, S., M. Bicher, and F. Breitenecker. "Alternative approaches for groundwater pollution." IFAC-PapersOnLine 48, no. 1 (2015): 159–64. http://dx.doi.org/10.1016/j.ifacol.2015.05.149.

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45

Covaciu (Neamțu), Diana Cătălina, Ana Claudia Balint, Călin Vasile Neamțu, Silvia Claudia Moșneag, Daniela Bordea, Sorina Dîrjan, and Antonia Cristina Maria Odagiu. "Assessment of Groundwater Quality in Relation to Organic versus Mineral Fertilization." Water 15, no. 16 (August 11, 2023): 2895. http://dx.doi.org/10.3390/w15162895.

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Groundwater pollution is a threat to the environment and human health because it is an important source of drinking water. Groundwater is used to supply water to communities and pollution occurs when harmful substances and contaminants infiltrate into the groundwater. Through excessive use of fertilizers, agriculture is a major contributor to groundwater pollution. This study tests the impact of organic and mineral fertilization on the groundwater physiochemical parameters and explores the potential consequences of using manure as fertilizer on groundwater nitrate pollution. The experiment was carried out in Satu Mare County, Romania, where both organic (manure) and mineral fertilizers were applied to potato cultures to test their impact on 18 physiochemical parameters of groundwater quality. Basic Statistics, Nitrate Pollution Index (NPI), and Principal Components Analysis were used for emphasizing the impact of mineral and organic fertilization on groundwater quality and relationships between analyzed groundwater parameters. The results show that groundwater corresponding to the site where the higher dose of organic fertilization was applied is characterized by nitrate concentrations (64.92 mg/L) and pH values (6.3 pH units) beyond the allowed limits. Based on the calculated NPI (2.21), it falls within the significant pollution category. Two principal factors were identified as having an impact on groundwater quality: fertilizer type and administered dose, respectively.

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Dong, Yihui, Jiale Li, Zhanxue Sun, Evgeniya Soldatova, and Jinjing Zan. "Bacterial diversity and community structure in nitrate-contaminated shallow groundwater in the Poyang Lake basin, China." E3S Web of Conferences 98 (2019): 01012. http://dx.doi.org/10.1051/e3sconf/20199801012.

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The Poyang Lake basin in the Jiangxi province of China has been exposed to nitrate pollution caused by irrigation practices, leading to high groundwater nitrate concentration. Eight groundwater samples were collected from shallow wells for hydrochemical, bacterial diversity, and community structure analysis in November 2017. Shallow groundwaters of the basin are weakly acid and in an oxidizing state, with EC ranging from 87.6 to 279.5 µS/cm and TDS varying between 53 to 344 mg/L and averaging of 164 mg/L. The NO3-N form is the dominant nitrogen species in groundwater, with сoncentrations of NO3-N, NO2-N and NH4-N ranging between 2.5 to 164 mg/L, 0.01 to 0.10 mg/L, <0.01 to 0.08 mg/L, respectively. Groundwater communities are dominated by actinobacteria, alphaproteobacterial, gammaproteobacteria and betaproteobacteria both in high- and low-nitrate groundwaters. The results of a 16S rRNA gene clone library indicate that the bacterial community structure of the high-nitrate groundwater is different from that of the low-nitrate groundwater. The bacterial populations Denitratisoma and Sulfuritalea detected in low-nitrate groundwater suggest that these bacteria are capable of denitrification in anaerobic groundwater environment. Bacterial populations Flavobacteria and Cytophagia in high-nitrate groundwater are common in the s wetlands examined and likely capable of nitrification.

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Bai, Liping, Yeyao Wang, Huina Fang, Li Liu, Youya Zhou, Zengguang Yan, and Fasheng Li. "Research on the evaluation method of groundwater quantity and pollution vulnerability." Water Supply 13, no. 2 (March 1, 2013): 368–75. http://dx.doi.org/10.2166/ws.2013.027.

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Current research on groundwater vulnerability is aimed mainly at groundwater pollution vulnerability (GPV), and the vulnerability of groundwater quantity is seldom considered. It is important to carry out the groundwater vulnerability evaluation for the management of groundwater resources. This paper presents evaluation models and methods for assessing groundwater quantity and pollution vulnerability. The models and methods were used to evaluate the groundwater vulnerability in the plain area of Baotou, Inner Mongolia, China. The groundwater quantity vulnerability was assessed by computing the groundwater recharge rate, and the GPV was evaluated by simulating the migration time for pollutants traveling from ground surface to the aquifer. The research results could provide scientific support for the management of regional groundwater resources, prevention and control of groundwater pollution.

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Wu, Hao, Jing Wen Qi, Hui Qian, Jie Chen, and Xue Di Zhang. "Groundwater Quality Affected by Yellow River Irrigated Agriculture in Northern Suburb of Yinchuan, China." Advanced Materials Research 1073-1076 (December 2014): 1035–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.1035.

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Groundwater quality is affected by agricultural irrigation easily. Northern suburb of Yinchuan is a part of Yellow River irrigation area. Shallow buried depth of groundwater and sandy aeration bring about high vulnerability which is adverse to prevent pollution. As source of drinking water, the quality of groundwater needs to be assessed eagerly. The analysis indicated primary pollution comes from agriculture activities. Pollution loss ratio was adopted to determine the level of pollution. The results show that pollution caused by high salinity is more prominent than nitrogen pollution. The pollution is considerable and a few pieces of advice were proposed in order to improve groundwater quality.

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Manenti, Raoul, Beatrice Piazza, Yahui Zhao, Emilio Padoa Schioppa, and Enrico Lunghi. "Conservation Studies on Groundwaters’ Pollution: Challenges and Perspectives for Stygofauna Communities." Sustainability 13, no. 13 (June 23, 2021): 7030. http://dx.doi.org/10.3390/su13137030.

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Assessing the effects of pollution in groundwaters is recently considered among the most relevant aims for subterranean biology; with this perspective, we aim to provide examples of the most relevant effects that pollution may cause on stygofauna community and underline patterns deserving further investigations. We retrieved different cases in which pollution caused alteration of groundwater trophic webs, favored invasions by epigean mesopredators, damaged stygobiont keystone species, and promoted interspecific competition between stygobionts and epigean animals. The results and the remarks derived from our perspective review underline that pollution may play multifaceted effects on groundwaters communities, and the paucity of information that exists on community-level changes and threats underlines the necessity for further studies.

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Belgiorno, V., and R. M. A. Napoli. "Groundwater quality monitoring." Water Science and Technology 42, no. 1-2 (July 1, 2000): 37–41. http://dx.doi.org/10.2166/wst.2000.0288.

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The paper describes results of monitoring activities of groundwater in a rural area carried out to verify the impact on water quality in an uncontaminated area resulting from the initiation of an atmospheric pollution source. Significant emissions of nitrogen oxides from the pollution source resulted in particular attention to verifying the increase of nitrate concentrations in monitored water. Over 10,000 analytical tests including several chemical parameters were conducted in the full monitoring period. In the paper, a first reading of data, graphical trends and non-parametric statistical analysis are presented. Measured values for nitrates, nitrites, hardness, alkalinity and pH showed poor variability during the entire period. Checked parameters were in the usual ranges of uncontaminated rural areas and comparisons between meaningful values of the periods ante operam and post operam do not show any degradation of water quality following the atmospheric pollution source activity. Nitrites are occasionally found in some spring water due to organic pollution, confirmed by the randomness with which their presence was detected.

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Journal articles on the topic 'Groundwater – Pollution'

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