Wetlands Modeling Articles & Analysis
18 articles found
Comparing the Environmental Impacts of Winery Wastewater Treatment Technologies Flores’s research focuses on the Life Cycle Assessment (LCA), Carbon Footprint (CFP) studies and numerical modelling for treatment wetlands and conventional technologies (i.e. activated sludge systems). ...
This simulation study investigates the treatment performance of a compact French vertical flow wetland using a zeolite layer in order to increase ammonium nitrogen removal. For the modelling exercise, the biokinetic model CW2D of the HYDRUS Wetland Module is used. ...
The Murray-Darling Basin Balanced Water Fund works to improve water reliability for farmers while returning water back to parched wetlands. The mechanism now serves as a model for other water scarce regions. ...
Water quality in wetlands plays a huge role in maintaining the health of the wetland ecosystem. Water quality should be controlled by an appropriate water allocation policy for the protection of the wetlands. In this paper, models of rainfall/runoff, non-point source pollution load, water quantity/quality, and dynamic ...
The microbiological test results analysed were those of most probable number (MPN) of coliforms ( Escherichia coli ), coliform counts in cfu/100 ml, staphylococcus (cfu/ml), salmonella (cfu/ml), salmonella and shigella (cfu/ml), total viable count (cfu/ml) and fungi (cfu/ml). Exponential and linear models were used for the MPN trend. The exponential model ...
A high resolution model mesh was required to numerically simulate sediment transport in tidal marshes. The timing of flooding is dependent on the tidal marsh ground elevation, which requires accurate topographic elevation data. The tidal prism of the marsh is determined by the volume provided by tidal channels in the system. Hence, their location and bathymetry needed to be represented ...
The resulting “Integrated Ecological Response Model” (IERM) that we have developed in collaboration with several dozen U.S. and Canadian researchers represents the stateof- the-science with respect to evaluating the impact of Great Lakes basin climate and hydrology on coastal ecosystem health, including indicators of wetland habitat availability and ...
Total nitrogen (TN) removal in treatment wetlands (TWs) is challenging due to nitrogen cycle complexity and the variation of influent nitrogen species. Plant species, season, temperature and hydraulic loading most likely influence root zone oxygenation and appurtenant nitrogen removal, especially for ammonium-rich wastewater. Nitrogen data were collected from two experiments utilizing ...
Due to the highly variable hydrologic quantity and quality of stormwater runoff, which requires more complex models for proper prediction of treatment, a relatively few and site-specific models for stormwater wetlands have been developed. In this study, regression models based on extensive operational data and wastewater ...
This paper argues that ecotourism with effective management and planning strategies can contribute to the Greening of industry in China. A case study of Hong Kong Wetland Park demonstrates the way in which ecological modernisation is utilised to minimise environmental impacts. ...
The wetland model, developed in aquatox, includes the nutrient dynamics both in the water and in the sediment, and the vegetation that is expected to develop as a consequence of flooding. ...
There is a need for a simplified computer-based design tool for subsurface flow constructed wetlands (CWs) which is based on process-based numerical models. Parameters of existing design guidelines and rules have been derived from experiments under specific conditions. ...
A process-based model that can evaluate the transport and the fate of phosphorus (P) in agricultural wastewater was developed for a novel 4-stage dewatered alum sludge cakes (DASC) based constructed wetlands (CWs) system using STELLA software (version 9.1.4). The model considered adsorption, plant and microbial uptakes as the major forms of P ...
Reducing conditions in soils can be documented by the voltage measured between Pt and reference electrodes (Eh) or by using dyes like ,-dipyridyl for identifying reduced species (such as Fe2+). Indicator of Reduction in Soils (IRIS) tubes have been recently introduced as an alternative approach for documenting reducing conditions in soils, where a synthetic Fe oxyhydroxide painted on polyvinyl ...
This study reviews the concept of model communities for water quality assessment in aquatic ecosystems. ...
The International Joint Commission has recently completed a five-year study (2000–2005) to review the operation of structures controlling the flows and levels of the Lake Ontario – St. Lawrence River system. In addition to addressing the multitude of stakeholder interests, the regulation plan review also considers environmental sustainability and integrity of wetlands and various ecosystem ...
Lake Ontario and St. Lawrence River (LOSL) wetland bird abundance and diversity are greatly influenced by lake and river hydrology. Our study used an interdisciplinary ecosystem approach, blending avian and plant ecology, ecohydraulic, statistical ecology and modelling to evaluate potential impacts of water level fluctuations on indicator species representative ...
With projected increases in population, humans may use between 72-99% (depending on whether per capita increases are factored) of accessible run-off by 2025, even accounting for new dam construction. Wetlands have the capability to filter polluted water and could therefore potentially affect access to freshwater. Based on an estimated 2507 km³/year of total wastewater produced in ...