Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China
To study the seasonal change rules of water quality indicators and water chemical control mechanisms in the nearby city river Xinbian River, in Suzhou City, Anhui Province, China, nine points were selected and periodically sampled for 12 months. Totally 108 water samples were collected, and basic ph...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2024-03-01
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| Series: | Water Practice and Technology |
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| Online Access: | http://wpt.iwaponline.com/content/19/3/874 |
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| author | Yuqi Chen Weihua Peng Manli Lin Xinyi Qiu Jiankui Liu Jinchen Zhang Dong Xu |
| author_facet | Yuqi Chen Weihua Peng Manli Lin Xinyi Qiu Jiankui Liu Jinchen Zhang Dong Xu |
| author_sort | Yuqi Chen |
| collection | DOAJ |
| description | To study the seasonal change rules of water quality indicators and water chemical control mechanisms in the nearby city river Xinbian River, in Suzhou City, Anhui Province, China, nine points were selected and periodically sampled for 12 months. Totally 108 water samples were collected, and basic physical–chemical indicators and routine ions (e.g., Ca2+, Mg2+, Na+, K+, SO42−, Cl−, F−, NO3−, CO32−, and HCO3−) were measured. Piper diagram, Gibbs diagram, and ion ratio method were used. The result shows that the seasonal and upstream-to-downstream variations in pH were less varied, whereas the fluctuation in dissolved oxygen was large. Four ions, namely, SO42-, F−, Cl−, and Na+ generally first decreased overall and then changed from spring to winter. The maximum contents of SO42- (406.03 mg/L), Cl− (250.22 mg/L), and Na+ (269.99 mg/L) in single water samples appeared at the S9 sampling point (Suzhou control gate) in March 2020. The dominant hydrochemical types in summer were Na–Ca–HCO3 and Na–Mg–SO4, while Na–Mg–SO4 and Na–Mg–HCO3 were the main hydrochemical types in the other seasons. The control factors of water chemical composition vary according to the season. However, rock weathering (e.g., silicate dissolution) is the dominant control factor of water chemistry in the studied river section.
HIGHLIGHTS
The annual water quality indicators of a proposed surface water source in a severely water-deficient city were tested.;
The seasonal change characteristics of water quality indicators and their control mechanisms were revealed.;
Both natural and human factors that affect water quality have been comprehensively analyzed.; |
| first_indexed | 2024-04-24T07:35:35Z |
| format | Article |
| id | doaj.art-bc1c8f20233f4e5da125c828840927a4 |
| institution | Directory Open Access Journal |
| issn | 1751-231X |
| language | English |
| last_indexed | 2024-04-24T07:35:35Z |
| publishDate | 2024-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Practice and Technology |
| spelling | doaj.art-bc1c8f20233f4e5da125c828840927a42024-04-20T07:03:44ZengIWA PublishingWater Practice and Technology1751-231X2024-03-0119387488610.2166/wpt.2024.053053Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, ChinaYuqi Chen0Weihua Peng1Manli Lin2Xinyi Qiu3Jiankui Liu4Jinchen Zhang5Dong Xu6 National Engineering Research Center of Coal Mine Water Hazard Controlling, School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, China National Engineering Research Center of Coal Mine Water Hazard Controlling, School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, China National Engineering Research Center of Coal Mine Water Hazard Controlling, School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, China Exploration Research Institute, Anhui Provincial Bureau of Coal Geology, Hefei 230001, China Anhui Geological Environment Monitoring Station, Hefei 230001, China Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, China Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, School of Resources and Civil Engineering, Suzhou University, Suzhou 234000, China To study the seasonal change rules of water quality indicators and water chemical control mechanisms in the nearby city river Xinbian River, in Suzhou City, Anhui Province, China, nine points were selected and periodically sampled for 12 months. Totally 108 water samples were collected, and basic physical–chemical indicators and routine ions (e.g., Ca2+, Mg2+, Na+, K+, SO42−, Cl−, F−, NO3−, CO32−, and HCO3−) were measured. Piper diagram, Gibbs diagram, and ion ratio method were used. The result shows that the seasonal and upstream-to-downstream variations in pH were less varied, whereas the fluctuation in dissolved oxygen was large. Four ions, namely, SO42-, F−, Cl−, and Na+ generally first decreased overall and then changed from spring to winter. The maximum contents of SO42- (406.03 mg/L), Cl− (250.22 mg/L), and Na+ (269.99 mg/L) in single water samples appeared at the S9 sampling point (Suzhou control gate) in March 2020. The dominant hydrochemical types in summer were Na–Ca–HCO3 and Na–Mg–SO4, while Na–Mg–SO4 and Na–Mg–HCO3 were the main hydrochemical types in the other seasons. The control factors of water chemical composition vary according to the season. However, rock weathering (e.g., silicate dissolution) is the dominant control factor of water chemistry in the studied river section. HIGHLIGHTS The annual water quality indicators of a proposed surface water source in a severely water-deficient city were tested.; The seasonal change characteristics of water quality indicators and their control mechanisms were revealed.; Both natural and human factors that affect water quality have been comprehensively analyzed.;http://wpt.iwaponline.com/content/19/3/874gibbs diagrampiper diagramwater chemical control mechanismwater qualityxinbian river |
| spellingShingle | Yuqi Chen Weihua Peng Manli Lin Xinyi Qiu Jiankui Liu Jinchen Zhang Dong Xu Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China Water Practice and Technology gibbs diagram piper diagram water chemical control mechanism water quality xinbian river |
| title | Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China |
| title_full | Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China |
| title_fullStr | Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China |
| title_full_unstemmed | Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China |
| title_short | Seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city: a case study in the Xinbian River of Suzhou City, Anhui Province, China |
| title_sort | seasonal variations and water chemical control mechanism of water quality in a suburban river near a coal city a case study in the xinbian river of suzhou city anhui province china |
| topic | gibbs diagram piper diagram water chemical control mechanism water quality xinbian river |
| url | http://wpt.iwaponline.com/content/19/3/874 |
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