Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences
Efficient identification of groundwater contamination is a major issue in the context of groundwater use and protection. This study used a new approach of multi-hydrochemical indicators, including the Cl-Br mass ratio, the hydrochemical facies, and the concentrations of nitrate, phosphate, organic c...
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oai:doaj.org-article:c70eeed9a2ec4fe09603a5622f634a252021-11-25T17:51:34ZIdentification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences10.3390/ijerph1822121431660-46011661-7827https://doaj.org/article/c70eeed9a2ec4fe09603a5622f634a252021-11-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/22/12143https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601Efficient identification of groundwater contamination is a major issue in the context of groundwater use and protection. This study used a new approach of multi-hydrochemical indicators, including the Cl-Br mass ratio, the hydrochemical facies, and the concentrations of nitrate, phosphate, organic contaminants, and Pb in groundwater to identify groundwater contamination in the Pearl River Delta (PRD) where there is large scale urbanization. In addition, the main factors resulting in groundwater contamination in the PRD were also discussed by using socioeconomic data and principal component analysis. Approximately 60% of groundwater sites in the PRD were identified to be contaminated according to the above six indicators. Contaminated groundwaters commonly occur in porous and fissured aquifers but rarely in karst aquifers. Groundwater contamination in porous aquifers is positively correlated with the urbanization level. Similarly, in fissured aquifers, the proportions of contaminated groundwater in urbanized and peri-urban areas were approximately two times that in non-urbanized areas. Groundwater contamination in the PRD was mainly attributed to the infiltration of wastewater from township-village enterprises on a regional scale. In addition, livestock waste was also an important source of groundwater contamination in the PRD. Therefore, in the future, the supervision of the wastewater discharge of township-village enterprises and the waste discharge of livestock should be strengthened to protect against groundwater contamination in the PRD.Pan BiLixin PeiGuanxing HuangDongya HanJiangmin SongMDPI AGarticlegroundwater contaminationmulti-hydrochemical evidencesporous aquifersfissured aquifersurbanizationMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 12143, p 12143 (2021) |
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groundwater contamination multi-hydrochemical evidences porous aquifers fissured aquifers urbanization Medicine R |
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groundwater contamination multi-hydrochemical evidences porous aquifers fissured aquifers urbanization Medicine R Pan Bi Lixin Pei Guanxing Huang Dongya Han Jiangmin Song Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
description |
Efficient identification of groundwater contamination is a major issue in the context of groundwater use and protection. This study used a new approach of multi-hydrochemical indicators, including the Cl-Br mass ratio, the hydrochemical facies, and the concentrations of nitrate, phosphate, organic contaminants, and Pb in groundwater to identify groundwater contamination in the Pearl River Delta (PRD) where there is large scale urbanization. In addition, the main factors resulting in groundwater contamination in the PRD were also discussed by using socioeconomic data and principal component analysis. Approximately 60% of groundwater sites in the PRD were identified to be contaminated according to the above six indicators. Contaminated groundwaters commonly occur in porous and fissured aquifers but rarely in karst aquifers. Groundwater contamination in porous aquifers is positively correlated with the urbanization level. Similarly, in fissured aquifers, the proportions of contaminated groundwater in urbanized and peri-urban areas were approximately two times that in non-urbanized areas. Groundwater contamination in the PRD was mainly attributed to the infiltration of wastewater from township-village enterprises on a regional scale. In addition, livestock waste was also an important source of groundwater contamination in the PRD. Therefore, in the future, the supervision of the wastewater discharge of township-village enterprises and the waste discharge of livestock should be strengthened to protect against groundwater contamination in the PRD. |
format |
article |
author |
Pan Bi Lixin Pei Guanxing Huang Dongya Han Jiangmin Song |
author_facet |
Pan Bi Lixin Pei Guanxing Huang Dongya Han Jiangmin Song |
author_sort |
Pan Bi |
title |
Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
title_short |
Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
title_full |
Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
title_fullStr |
Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
title_full_unstemmed |
Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences |
title_sort |
identification of groundwater contamination in a rapidly urbanized area on a regional scale: a new approach of multi-hydrochemical evidences |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/c70eeed9a2ec4fe09603a5622f634a25 |
work_keys_str_mv |
AT panbi identificationofgroundwatercontaminationinarapidlyurbanizedareaonaregionalscaleanewapproachofmultihydrochemicalevidences AT lixinpei identificationofgroundwatercontaminationinarapidlyurbanizedareaonaregionalscaleanewapproachofmultihydrochemicalevidences AT guanxinghuang identificationofgroundwatercontaminationinarapidlyurbanizedareaonaregionalscaleanewapproachofmultihydrochemicalevidences AT dongyahan identificationofgroundwatercontaminationinarapidlyurbanizedareaonaregionalscaleanewapproachofmultihydrochemicalevidences AT jiangminsong identificationofgroundwatercontaminationinarapidlyurbanizedareaonaregionalscaleanewapproachofmultihydrochemicalevidences |
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1718411948197937152 |