Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers
In this study, abstraction, desalination and recharge method and SEAWAT numerical model are used to investigate seawater intrusion repulsion in a hypothetical two-dimensional coastal aquifer to understand the relation of seawater intrusion with abstraction, desalination and recharge parameters (i.e....
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2019-01-01
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| Series: | Global Journal of Environmental Science and Management |
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| Online Access: | https://www.gjesm.net/article_33763_956b08c9fcff5c4e1134c659b2069f98.pdf |
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| author | S. Sadjad Mehdizadeh S. Badaruddin S. Khatibi |
| author_facet | S. Sadjad Mehdizadeh S. Badaruddin S. Khatibi |
| author_sort | S. Sadjad Mehdizadeh |
| collection | DOAJ |
| description | In this study, abstraction, desalination and recharge method and SEAWAT numerical model are used to investigate seawater intrusion repulsion in a hypothetical two-dimensional coastal aquifer to understand the relation of seawater intrusion with abstraction, desalination and recharge parameters (i.e. abstraction/recharge rate, wells distance and depth). Abstraction, desalination and recharge consists of abstraction and desalination of brackish water and recharge of desalinated water. The results of different defined scenarios showed that increase of recharge rate has a significant effect on the seawater intrusion mitigation (e.g. more than 80% variation in saline water volume) while the increase of abstraction rate does not have specific impact on seawater recession (e.g. less than 3% variation in toe position). The method efficiency in reducing seawater intrusion is increased when freshwater is recharged by well at outside of saltwater wedge and close to its toe position. Moreover, it is shown that the abstraction, desalination and recharge performance has slightly improved when the recharge and extraction wells are placed deeper into aquifer and close to aquifer bottom (almost 15% for all characteristics of salt wedge). Ultimately, dilution of saline water with recharged freshwater will widen the mixing zone but as salt wedge recedes toward the sea simultaneously, the mixing zone thickness cannot follow the steady reduction trend.<strong> </strong> |
| format | Article |
| id | doaj-art-0a727142d86c4758909fd9e0d5a95872 |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | GJESM Publisher |
| record_format | Article |
| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-0a727142d86c4758909fd9e0d5a958722025-02-02T14:13:50ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662019-01-015110711810.22034/gjesm.2019.01.0933763Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifersS. Sadjad Mehdizadeh0S. Badaruddin1S. Khatibi2Department of Civil Engineering, Central Tehran Branch, Islamic Azad University, P.O. Box 13185-768, Tehran, IranCivil Engineering Department, Politeknik Negeri Ujung Pandang, P.O. Box 90245, South Sulawesi, IndonesiaDepartment of Civil Engineering, Sharif University of Technology, Tehran, IranIn this study, abstraction, desalination and recharge method and SEAWAT numerical model are used to investigate seawater intrusion repulsion in a hypothetical two-dimensional coastal aquifer to understand the relation of seawater intrusion with abstraction, desalination and recharge parameters (i.e. abstraction/recharge rate, wells distance and depth). Abstraction, desalination and recharge consists of abstraction and desalination of brackish water and recharge of desalinated water. The results of different defined scenarios showed that increase of recharge rate has a significant effect on the seawater intrusion mitigation (e.g. more than 80% variation in saline water volume) while the increase of abstraction rate does not have specific impact on seawater recession (e.g. less than 3% variation in toe position). The method efficiency in reducing seawater intrusion is increased when freshwater is recharged by well at outside of saltwater wedge and close to its toe position. Moreover, it is shown that the abstraction, desalination and recharge performance has slightly improved when the recharge and extraction wells are placed deeper into aquifer and close to aquifer bottom (almost 15% for all characteristics of salt wedge). Ultimately, dilution of saline water with recharged freshwater will widen the mixing zone but as salt wedge recedes toward the sea simultaneously, the mixing zone thickness cannot follow the steady reduction trend.<strong> </strong>https://www.gjesm.net/article_33763_956b08c9fcff5c4e1134c659b2069f98.pdfAbstraction, desalination and recharge (ADR)Controlling methodMixing zoneSeawater intrusion (SWI)Toe position |
| spellingShingle | S. Sadjad Mehdizadeh S. Badaruddin S. Khatibi Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers Global Journal of Environmental Science and Management Abstraction, desalination and recharge (ADR) Controlling method Mixing zone Seawater intrusion (SWI) Toe position |
| title | Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| title_full | Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| title_fullStr | Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| title_full_unstemmed | Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| title_short | Abstraction, desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| title_sort | abstraction desalination and recharge method to control seawater intrusion into unconfined coastal aquifers |
| topic | Abstraction, desalination and recharge (ADR) Controlling method Mixing zone Seawater intrusion (SWI) Toe position |
| url | https://www.gjesm.net/article_33763_956b08c9fcff5c4e1134c659b2069f98.pdf |
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