Conference paper
In-situ Event Simulation: Treatment Efficiency Evaluation of a Constructed Floating Wetland in a Coastal Canal
Conference Papers of Stormwater2021 National Conference, pp.1-12
Stormwater, 2021 (Virtual, 13-Apr-2021 - 16-Apr-2021)
Stormwater Australia
2021
Abstract
Constructed floating wetlands (CFWs) provide stormwater treatment without the land-use intensity of bio basin alternatives. The efficiency of these buoyant vegetated structures is a central concern for urban developers, CFW manufacturers and regulatory bodies governing stormwater management, urban development and the protection of ecosystem health. Low nutrient concentrations observed in urban stormwater runoff (Wang et. al, 2014, Lucke et. al 2018, Schwammberger et al. 2019) has limited the ability to effectively evaluate the removal efficiency of these systems. Most investigations to date have concentrated on evaluating CFWs in freshwater lakes or stormwater and wastewater effluent ponds (Bi et. al, 2019). Little is known regarding their performance in saline brackish systems, particularly tidal systems. The amenity migrant movement is increasing population growth in coastal regions (Gurran et. al 2007) and the use of CFWs in saline canals is well aligned with the goals of urban designers seeking innovative ways to incorporate stormwater management with consumers' preference for high natural amenity. This applied research sought to identify treatment efficiency for an event reflecting typical rainfall for the catchment and pollutant levels reflective of current Australian modelling and regulatory guidelines. Believed to be the first of its kind in Australia, the study combined the knowledge and skills of academics, multiple industry sectors and local government to increase understanding of the treatment efficiency of CFWs in tidal saline canal systems and to inform coastal urban development design practices. An in-situ field experiment evaluated nutrient and total suspended solids (TSS) removal efficiency of an established CFW in a coastal canal system during a simulated rainfall event using a synthetic stormwater mix. Results demonstrated CFWs within embayments in urban saline waters can achieve treatment efficiencies comparable to, and possibly higher than other vegetated treatment systems. Learnings from this research are being used to inform the design of stormwater management in an urban coastal development and direct future CFW research.
Details
- Title
- In-situ Event Simulation: Treatment Efficiency Evaluation of a Constructed Floating Wetland in a Coastal Canal
- Authors
- Jane-Louise Lampard (Author) - University of the Sunshine Coast, Queensland, School of Health and Behavioural Sciences - LegacyDarren Drapper (Author)Andy Hornbuckle (Author)Phil Tryer (Author)Jonathan Baxter (Author)Hamish Pressland (Author)Travis Hivon (Author)Georgina Kelly (Author)Kevin Covey (Author)Charles Cook (Author)Luke Verstraten (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringNeil Tindale (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
- Publication details
- Conference Papers of Stormwater2021 National Conference, pp.1-12
- Conference details
- Stormwater, 2021 (Virtual, 13-Apr-2021 - 16-Apr-2021)
- Publisher
- Stormwater Australia
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; School of Health and Behavioural Sciences - Legacy; School of Health - Public Health; Sustainability Research Centre
- Language
- English
- Record Identifier
- 99585108302621
- Output Type
- Conference paper
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