stormwater runoff Articles
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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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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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Uptown shopping center - Case Study
ChitoVan Chitosan Lactate Cartridge Pretreatment and Sand Filtration Urban development and redevelopment present a host of challenges - not the least of which is managing site stormwater runoff. In a northern suburb of Vancouver Island’s beautiful city of Victoria, BC the stormwater challenge was met and bested through the application of both passive and active chitosan stormwater ...
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Erosion and Sediment Control: Navigating NPDES Regulations, the SWPPP, and Techniques for Compliance
Erosion and Sedimentation: Why Are They a Problem? The US Environmental Protection Agency lists sediment as the single most common pollutant in rivers, streams, lakes, and reservoirs. With all the potentially harmful chemicals and substances in the world, it seems odd to many people that sediment—dirt, essentially—is singled out as the major culprit. Yet these particles of sand, ...
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Brightwater treatment plant - Case Study
Active Treatment and Certification To meet the stringent state stormwater run-off standards during construction of the Brightwater Conveyance and Wastewater Treatment Plant Project in Woodinville, WA one active treatment system using 1% ChitoVan Chitosan Acetate was needed. Dungeness Environmental worked alongside Northwest Construction to gain approval for CESF treatment through Ecology. ...
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Usiminis storm water retention basin, Ipatinga, Minas Gerais, Brazil - Case Study
The Problem Usiminas, a Brazilian steel company located in Ipatinga, Minas Gerais, is increasing its production capacity from four million tons annually. The increase in capacity is necessary to keep up with the Brazilian automotive market, which is currently consuming 30% of Usiminas’ production. To increase Usiminas’ production capacity, construction of a new industrial ...
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Seatac airport third runaway - Case Study
Active Treatment with 1% ChitoVan™ Chitosan Acetate The west side of Sea-Tac airport was widened by adding 11 million cubic yards of fill dirt to create the 3rd runway. Because the west side of the airport drains to Miller Creek, a protected NW stream, all of the construction stormwater had to be captured and treated prior to discharge. During the project over 5 billion gallons of water ...
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Leaching of additives from construction materials to urban storm water runoff
Urban water management requires further clarification about pollutants in storm water. Little is known about the release of organic additives used in construction materials and the impact of these compounds to storm water runoff. We investigated sources and pathways of additives used in construction materials, i.e., biocides in facades' render as well as root protection products in bitumen ...
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Let`s Get Real: A Response to Bill Maher
Bill Maher can be a funny guy, but he is misguided when he says that environmental impact statements (EISs) are impeding progress on construction projects, as he did on his September 10 episode of Real Time on HBO. In addition, Maher is blatantly wrong when he lumps EISs into activities that he considers to be “money grabs” and “graft.” Actually, it is quite the opposite. ...
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Material Blowers: The Most Versatile Machines in Your Fleet
Materials blowers are designed to be a valuable asset for landscaping work, erosion control projects and construction job sites. The versatility of a material blower saves businesses time and money not only in its ability to handle a variety of materials, but also its material and labor efficiency. Material blowers are capable of reducing material costs by up to 40% and increasing productivity ...
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Greening the Built Environment
ASTM Standards and Products Form the Foundation of Sustainable Construction Efforts Today, a major focal point for the worldwide building industry is the growing demand for sustainable construction. Sustainable, or “green,” construction is focused on the more effective use of resources and ultimately the creation of healthier, energy efficient, more environmentally friendly homes and ...
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