Indicator microorganisms –
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Indicator microorganisms –
As cities and urban landscapes expand across the globe, water resource management continues to pose a huge challenge. Natural wetlands are often built over as cities grow, but a recent strategy of green infrastructure applies the opposite principle – wetlands are protected and constructed as part of city planning. Wetlands, whether natural or man-made, act as large-scale storage and filtration centers for water streams. Beyond providing a habitat for wildlife and greenery in otherwise urban landscapes,...
For successfully operating a vertical flow constructed wetland, the uniform distribution of wastewater on the surface of the soil filter is essential. In research, however, this aspect is often overlooked. This study presents a methodology for assessing discharge uniformity from perforated pipe systems via hydraulic modeling. First, the requirements and conditions for the simulation of perforated pipe systems are investigated and the model basics are explained. Then the whole process of model build-up, calibration,...
Liquid effluent produced from tanning industries is loaded with organic and inorganic contaminants, particularly heavy metals, which may cause severe damage to the ecosystem. Constructed wetland (CW) is a promising product of the research in the field of ecological engineering which helps to overcome aquatic pollution. This investigation aims to develop a plant–endophyte synergism in CW for the efficient remediation of tannery effluent. In a vertical flow CW, Brachiaria mutica was vegetated and augmented with...
Eutrophication often leads to the periodic proliferation of harmful cyanobacterial blooms (HCBs), which threaten the sustainability of freshwater ecosystems and lead to serious environmental, health and economic damage. Hence, it is vitally important to take effective measures to manage HCBs and associated problems. In this study, vertical flow constructed wetlands (CWs) were operated under different hydraulic loading rates (HLRs) to treat a hyper-eutrophic water body with HCBs. Six sampling ports (representing...
The objective of this study was to determine how macrophytes commonly used in treatment wetlands (TWs) respond to water with low pollutant concentration. We measured pollutant removal efficiency and compared growth and nutrient uptake of five macrophytes in demonstration scale units (volume >40 m3) irrigated by water with pollutant concentrations representative of average urban stormwater quality. All species showed a strong productivity gradient along the beds, starting with high biomass – high density near...
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