Publikation:
Impact of river reconstruction on groundwater flow during bank filtration assessed by transient three-dimensional modelling of flow and heat transport

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dc.contributor.authorWang, Wei-shi
dc.contributor.authorGräff, Thomas
dc.contributor.authorOswald, Sascha E.
dc.date.accessioned2024-06-16T14:32:04Z
dc.date.available2024-06-16T14:32:04Z
dc.date.issued2019
dc.description.abstractBank filtration (BF) is an established indirect water-treatment technology. The quality of water gained via BF depends on the subsurface capture zone, the mixing ratio (river water versus ambient groundwater), spatial and temporal distribution of subsurface travel times, and subsurface temperature patterns. Surface-water infiltration into the adjacent aquifer is determined by the local hydraulic gradient and riverbed permeability, which could be altered by natural clogging, scouring and artificial decolmation processes. The seasonal behaviour of a BF system in Germany, and its development during and about 6 months after decolmation (canal reconstruction), was observed with a long-term monitoring programme. To quantify the spatial and temporal variation in the BF system, a transient flow and heat transport model was implemented and two model scenarios, 'with' and 'without' canal reconstruction, were generated. Overall, the simulated water heads and temperatures matched those observed. Increased hydraulic connection between the canal and aquifer caused by the canal reconstruction led to an increase of ~23% in the already high share of BF water abstracted by the nearby waterworks. Subsurface travel-time distribution substantially shifted towards shorter travel times. Flow paths with travel times <200 days increased by ~10% and those with <300 days by 15%. Generally, the periodic temperature signal, and the summer and winter temperature extrema, increased and penetrated deeper into the aquifer. The joint hydrological and thermal effects caused by the canal reconstruction might increase the potential of biodegradable compounds to further penetrate into the aquifer, also by potentially affecting the redox zonation in the aquifer. © 2019 Springer Nature Switzerland AGen
dc.format.extent1 Onlineressource (21 Seiten)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-348
dc.identifier.urihttps://openumwelt.de/handle/123456789/4901
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectUferfiltration
dc.titleImpact of river reconstruction on groundwater flow during bank filtration assessed by transient three-dimensional modelling of flow and heat transport
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleHydrogeology Journal
local.bibliographicCitation.originalDOI10.1007/s10040-019-02063-3
local.bibliographicCitation.volume(2019)
local.collectionAufsätze
local.contributor.authorId02183271
local.contributor.authorId02177927
local.identifier.catalogId02470626
local.ingest.leader05034naa a2200000uu 4500
local.jointTitleIMPACT OF RIVER RECONSTRUCTION ON GROUNDWATER FLOW DURING BANK FILTRATION ASSESSED BY TRANSIENT THREEDIMENSIONAL MODELLING OF FLOW AND HEAT TRANSPORT
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local.staffPublicationtrue
relation.isAuthorOfPublicationcb196f2d-de98-4109-bdbe-129178e81921
relation.isAuthorOfPublication.latestForDiscoverycb196f2d-de98-4109-bdbe-129178e81921
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