Assessment of stormwater pollutant loads and source area contributions with storm water management model (SWMM)

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Tuomela, Camilla Sillanpää, Nora Koivusalo, Harri 2019-02-25T08:47:37Z 2019-02-25T08:47:37Z 2019-03-01
dc.identifier.citation Tuomela , C , Sillanpää , N & Koivusalo , H 2019 , ' Assessment of stormwater pollutant loads and source area contributions with storm water management model (SWMM) ' Journal of Environmental Management , vol. 233 , pp. 719-727 . en
dc.identifier.issn 0301-4797
dc.identifier.issn 1095-8630
dc.identifier.other PURE UUID: 6c72b1ca-fd62-45a9-a3a6-cc5047707d19
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
dc.identifier.other PURE LINK:
dc.description.abstract Decentralized urban runoff management requires detailed information about pollutant sources and pathways. However, scarce data of local water quality compel simplified approaches in water quality modelling. This study investigated the use of constant source concentrations in modelling pollutant loads. The source area contributions of total suspended solids, total phosphorus, total nitrogen, lead, copper and zinc were modelled with SWMM based on literature event mean concentrations (EMCs) for different land cover types and on-site rainfall and discharge data for a residential area in southern Finland. The simulated pollutant loads were compared with loads measured at the catchment outlet. Large differences were evident in the modelled catchment-scale and land cover specific loads, depending on the EMC data source. The simulated loads exceeded the measured loads especially during wet conditions, which was explained by the dilution effect of large stormwater volumes on measured EMCs. In addition, the mismatch was explained by the lack of local data for the source area EMCs and by the unaccountability of the mechanisms affecting loads along the pollutant pathways from source areas to sewer outlet. The spatial simulation of stormwater pollutant loads enabled the assessment of source area contributions at the catchment scale, as well as the pollutant pathways and the total diffuse pollution load. For a single pollutant, one or two important pollutant sources contributed the majority of the catchment load, which provides useful information for stormwater management. However, for a group of pollutants, no single land cover type dominated the pollutant loads, reflecting the challenges in decentralized water quality management in the scale of a residential area. Overall, the results emphasize that the widely used stormwater quality modelling with constant EMCs is uncertain even when on-site water quality and rainfall-runoff data from a catchment outlet are available. en
dc.format.extent 9
dc.format.extent 719-727
dc.language.iso en en
dc.publisher Academic Press Inc.
dc.relation.ispartofseries Journal of Environmental Management en
dc.relation.ispartofseries Volume 233 en
dc.rights embargoedAccess en
dc.subject.other Engineering (miscellaneous) en
dc.subject.other Environmental Engineering en
dc.subject.other Waste Management and Disposal en
dc.subject.other Management, Monitoring, Policy and Law en
dc.subject.other 218 Environmental engineering en
dc.subject.other Environmental engineering en
dc.title Assessment of stormwater pollutant loads and source area contributions with storm water management model (SWMM) en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Water and Environmental Engineering
dc.contributor.department Department of Built Environment en
dc.subject.keyword Stormwater pollution
dc.subject.keyword Urban catchment
dc.subject.keyword Pollutant pathway
dc.subject.keyword Stormwater quality modelling
dc.subject.keyword Event mean concentration
dc.subject.keyword Land cover
dc.subject.keyword Engineering (miscellaneous)
dc.subject.keyword Environmental Engineering
dc.subject.keyword Waste Management and Disposal
dc.subject.keyword Management, Monitoring, Policy and Law
dc.subject.keyword 218 Environmental engineering
dc.subject.keyword Environmental engineering
dc.identifier.urn URN:NBN:fi:aalto-201902251935
dc.identifier.doi 10.1016/j.jenvman.2018.12.061 info:eu-repo/date/embargoEnd/2021-01-12

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