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Modelling phosphoru...
Modelling phosphorus dynamics in constructed wetlands upgraded with reactive filter media
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- Hamisi, Rajabu, 1978- (author)
- KTH,Hållbar utveckling, miljövetenskap och teknik,Environmental Geochemistry Group
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- Renman, Gunno, Professor (thesis advisor)
- KTH,Hållbar utveckling, miljövetenskap och teknik
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- Balfors, Berit, Professor (thesis advisor)
- KTH,Hållbar utveckling, miljövetenskap och teknik
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- Thunvik, Roger, Emer.Professor (thesis advisor)
- KTH,Hållbar utveckling, miljövetenskap och teknik
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- Lyon, Steve W., Professor (opponent)
- Stockholms universitet
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(creator_code:org_t)
- ISBN 9789177294368
- KTH : KTH Royal Institute of Technology, 2017
- English 35 s.
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Series: TRITA-LWR. LIC, 1650-8629 ; 2017:02
- Related links:
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https://kth.diva-por... (primary) (Raw object)
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https://kth.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Developing low-cost and effective technologies to upgrade phosphorus (P) removal from the catchment runoffs and rural wastewater treatment facilities is one of the main research agendas to save the Baltic Sea from eutrophication. In Sweden, the construction of the constructed wetlands has been one of the environmental objectives for wastewater quality improvement in the small communities. However, the insufficiently understanding of the mechanisms underlying the process of phosphorus mobility and sorption in the constructed wetlands has limited design of the effective constructed wetlands. To provide the better understanding of sorption process in the catchment and constructed wetland system, this thesis used the GIS-based Soil and Water Assessment Tool (SWAT) to predict phosphorus mobility and identify the critical diffusing sources of phosphorus loss in the Oxunda catchment (Paper I). Then, the study developed the three-dimensional numerical Reactive TRAnsPort Model (RETRAP - 3D) in the COMSOL Multiphysics® for evaluating the long - term sorption processes and removal efficiencies of the porous reactive media for upgrading the performance of constructed wetlands (Paper II and III). The latter model coupled many physics equations to solve process of water flow, reaction kinetics and solute transport in the porous reactive adsorbent media for application in the constructed wetlands. The data from the field measurements and column experiments have been used to demonstrate the model simulation accuracy to capture the process of phosphorus sorption in the real environment. Modeling results ranked the phosphorus removal efficiency of the adsorbent media as follows: Polonite® (88 %), Filtralite P® (85%), BFS (62%), Wollastonite (57 %). The satisfactory agreement which obtained between the simulated outputs and measured data confirmed that the SWAT and RETRAP-3D are useful tools for describing various processes in the complicated system. However, further study is required to generate and validate more experimental data to evaluate the sensitivity of local parameters.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
Keyword
- Constructed Wetland
- COMSOL
- Modelling
- Reactive Solute Transport
- Sorption Process
- Mark- och vattenteknik
- Land and Water Resources Engineering
Publication and Content Type
- vet (subject category)
- lic (subject category)
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Hamisi, Rajabu, ...
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Renman, Gunno, P ...
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Balfors, Berit, ...
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Thunvik, Roger, ...
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Lyon, Steve W., ...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Civil Engineerin ...
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and Water Engineerin ...
- Parts in the series
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TRITA-LWR. LIC,
- By the university
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Royal Institute of Technology