construction stormwater Articles
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Controlling urban stormwater pollution by constructed wetlands: a Canadian perspective
During the past 20 years, Constructed Stormwater Wetlands (CSWWs) have attained broad acceptance in Canada as effective measures for stormwater management. CSWWs are used mainly for improving stormwater quality by providing sufficient treatment volumes in shallow permanent pools. This leads to high requirements for land, which is one of the constraints on CSWWs use. Even though CSWWs perform less ...
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Exploring fecal indicator bacteria in a constructed stormwater wetland
Microbial pollution in surface waters is a concern throughout the world, with both public health and economic implications. One contributing source to such pollution is stormwater runoff, often treated using various types of stormwater control measures. However, relatively little is known regarding microbe sequestration in constructed stormwater wetlands (CSWs), one type of commonly installed ...
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Comparison of the treatment performance of hybrid constructed wetlands treating stormwater runoff
This study was conducted to compare the treatment performance of two hybrid constructed wetlands (CWs) in treating stormwater runoff. The hybrid CWs were composed of a combination of free water surface (FWS) and horizontal subsurface flow (HSSF) CWs. Based on the results, strong correlation exists between potential runoff impacts and stormwater characteristics; however, the low correlations ...
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Particle retention in compact constructed wetlands treating highway stormwater
Three pilot-scale compact constructed wetland systems were constructed to treat stormwater from a highway. They each comprised a sedimentation tank, and a vertical flow (VF) wetland bed equipped with a recirculation device. The VF wetland beds were filled with woodchip, pumice and volcanic gravel, respectively. According to the analysis of the particle size distributions (0.52–500 ...
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Performance of a pilot-scale constructed wetland for stormwater runoff and domestic sewage treatment on the banks of a polluted urban river
To examine the performance of a constructed wetland system on stormwater runoff and domestic sewage (SRS) treatment in central east China, two parallel pilot-scale integrated constructed wetland (ICW) systems were operated for one year. Each ICW consisted of a down-flow bed, an up-flow bed and a horizontal subsurface flow bed. The average removal rates of chemical oxygen demand (CODCr), total ...
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Three Ways to Think Like a Sponge City
Climate change is real, regardless of whether we agree on the cause. Forward-thinking urban regions are beginning to realize that the effects of climate change are going to be felt, at least to some extent, no matter what actions we take now. The future, if we plan to be there, must be sustainable. So what does that look like where stormwater is concerned? One of the most innovative trends in the ...
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Project - Martin County and EcoSense International: MacArthur Lake Nutrient Reduction
July 15th, 2020 Martin County and EcoSense International have partnered to reduce excess nutrient concentrations at a local level. EcoSense specializes in nutrient removal. The joint initiative involves lowering nutrient levels in MacArthur Lake to minimize algal blooms. This effort involves 64 independent buoys supporting permeable bags filled with a special formulation of NutriGone™ and ...
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Constructed Wetlands I
Traditional constructed wetland are shallow planted basins for cleaning anthropogenic discharges (wastewater or polluted runoff). They were used for cleaning of: domestic wastewater agricultural wastewater coal mine drainage stormwater runoff The main construction elements were: inflow ( e.g. sedimentation part) substrat (soil or gravel) with plants (marsh or water plants) discharge ...
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A systematic approach to determine herbicide removals in constructed wetlands using time integrated passive samplers
Natural water treatment systems such as wetlands are increasingly being recognised for their role as part of a multi-barrier system for water recycling. Natural wetland systems have the ability to provide effective treatment for a wide range of organic chemicals. However, techniques are required to validate the performance of these treatment processes in the field. This paper provides a new ...
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