Nature-based stormwater management for aquifer recharge: exploring bioclogging-induced challenges

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dc.contributor.authorWu, Yuhui
dc.contributor.authorLu, Ying
dc.contributor.authorYan, Zihan
dc.contributor.authorShi, Min
dc.contributor.authorWang, Qiandan
dc.contributor.authorLyu, Tao
dc.contributor.authorJia, Ruoyu
dc.contributor.authorHuang, Ling
dc.contributor.authorChen, Zhiliang
dc.contributor.authorChen, Jianyu
dc.contributor.authorSong, Xiaoming
dc.contributor.authorYang, Yuesuo
dc.date.accessioned2025-05-30T14:36:31Z
dc.date.available2025-05-30T14:36:31Z
dc.date.freetoread2025-05-30
dc.date.issued2025-08-01
dc.date.pubOnline2025-05-05
dc.description.abstractUtilising excess urban stormwater to recharge groundwater can effectively mitigate the problems caused by the over-exploitation of subsurface environments while simultaneously making full use of valuable water resources. However, bioclogging can significantly reduce the efficiency of recharge projects in practical applications. This study is distinguished by its comprehensive consideration of unsaturated hydraulic conditions during stormwater recharge, which can influence microbial activities and the evolution of bioclogging, setting it apart from the predominant focus on saturated conditions in previous research. Microbial activity in the media became more vigorous under unsaturated conditions, and the cell volume decreased to 33–50 % of that under saturated conditions. Under unsaturated conditions, microbial EPS exhibited a curled morphology. At 60 % saturation, the contents of LB-EPS and polysaccharides increased by 141.23 and 187.47 μg/g sand, respectively, compared to saturated conditions. The reduction in saturation weakened microbial migration, promoted their deposition on the media surfaces, and reduced the non-uniformity of interlayer distribution. Simultaneously, unsaturated seepage conditions attenuated the effect of flow velocity (0.5–2 mL/min) changes on microbial migration and deposition. Bioclogging under unsaturated seepage conditions was governed by both EPS action and the EPS-bacterial interaction, with EPS secretion significantly influencing the degree of internal bioclogging development. This work contributes to a more comprehensive understanding of the bioclogging mechanisms under the unique hydrodynamic conditions of stormwater recharge, enabling more precise prevention and control of bioclogging during artificial stormwater recharge.
dc.description.journalNameEnvironmental Technology & Innovation
dc.description.sponsorshipThis work was supported by the open fund from the Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education (grant no.: KF-23–10), Special Basic Research Fund for Central Public Research Institutes of China (PM-zx951–202303–125), National Natural Science Foundation of China (42272284, 42277189), China Postdoctoral Science Foundation 2023M732396, Guangxi Key Research and Development Plan (No. Gui ke AB24010113).
dc.identifier.citationWu Y, Lu Y, Yan Z, et al., (2025) Nature-based stormwater management for aquifer recharge: exploring bioclogging-induced challenges. Environmental Technology & Innovation, Volume 39, August 2025, Article number 104228
dc.identifier.eissn2352-1864
dc.identifier.elementsID672905
dc.identifier.issn2352-1864
dc.identifier.paperNo104228
dc.identifier.urihttps://doi.org/10.1016/j.eti.2025.104228
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23945
dc.identifier.volumeNo39
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S2352186425002147?via%3Dihub
dc.rightsAttribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectAdvanced stormwater management
dc.subjectBiological clogging
dc.subjectGroundwater recharge
dc.subjectWater reuse
dc.subjectNature-based solutions (NbS)
dc.subject3707 Hydrology
dc.subject37 Earth Sciences
dc.subject40 Engineering
dc.subject41 Environmental Sciences
dc.subject4011 Environmental Engineering
dc.titleNature-based stormwater management for aquifer recharge: exploring bioclogging-induced challenges
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-04-23

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