storm event Articles

  • Treatment performance of a constructed wetland during storm and non-storm events in Korea

    The efficiency of a free water surface flow constructed wetland (CW) in treating agricultural discharges from stream was investigated during storm and non-storm events between April and December, 2009. Physico-chemical and water quality constituents were monitored at five sampling locations along the flow path of the CW. The greatest reduction in pollutant concentration was observed after passing ...


    By IWA Publishing

  • Investigations into and optimisation of the performance of sewage detention tanks during storm rainfall events

    ABSTRACTCombined Sewage Detention Tanks (CSDT) are components of combined sewage systems commonly used in Germany. A lack of knowledge of the processes occurring within these structures causes the engineer to apply conceptual approaches in the simulation of pollutant transport. The investigations presented were implemented in an integrated systematic way. Extensive analytical, experimental and ...


    By IWA Publishing

  • Methodologies to study the surface hydraulic behaviour of urban catchments during storm events

    A good knowledge of the hydraulic behaviour of an urban catchment and its surface drainage system is an essential requirement to guarantee traffic and pedestrian safety. In many cases, inlets have been situated according to spatial density criteria. Indeed a more rational location of inlets on urban catchments must be defined according to an accurate analysis of the relationship between street ...


    By IWA Publishing

  • Porirua New Zealand – WaStop® DN225 - Case Study

    Porirua City located 20 km north of Wellington has over 70 storm water outlets into the harbour. A number of these outlets are very flat on their approach to the harbour which generally means they are severely influenced by high tides. The problem with these outlets is that if a rain fall event coincides with a high tide, the ability of the storm water network to discharge is severely restricted. ...


    By Wapro AB

  • Storm Debris Recovery & Processing

    Mobile wood grinding fleet, qualification as a preapproved cleanup contractor and reliable outlets for processed debris are keys to success. The weeklong winter storm that hit the south and East Coast last February was a record-setting event. The state of South Carolina lost 11 percent of its timber, with North Carolina and some East Coast states sustaining similar ...


    By BioCycle Magazine

  • Removal of chemical oxygen demand and dissolved nutrients by a sunken lawn infiltration system during intermittent storm events

    Urban surface water runoff typically contains high but varying amounts of organic matter and nutrients that require removal before reuse. Infiltration systems such as sunken lawns can improve water quality. However, there is currently insufficient information describing the treatment efficiency of lawn-based infiltration systems. In this study, novel sunken lawn infiltration systems (SLISs) were ...


    By IWA Publishing

  • Assessing dry weather flow contribution in TSS and COD storm events loads in combined sewer systems

    Continuous high resolution long term turbidity measurements along with continuous discharge measurements are now recognised as an appropriate technique for the estimation of in sewer total suspended solids (TSS) and Chemical Oxygen Demand (COD) loads during storm events. In the combined system of the Ecully urban catchment (Lyon, France), this technique is implemented since 2003, with more than ...


    By IWA Publishing

  • From mess to mass: a methodology for calculating storm event pollutant loads with their uncertainties, from continuous raw data time series

    With the increasing implementation of continuous monitoring of both discharge and water quality in sewer systems, large data bases are now available. In order to manage large amounts of data and calculate various variables and indicators of interest it is necessary to apply automated methods for data processing. This paper deals with the processing of short time step turbidity time series to ...


    By IWA Publishing

  • Contrasting patterns of nutrient dynamics during different storm events in a semi-arid catchment of northern China

    Nutrient discharge during storm events is a critical pathway for nutrient export in semi-arid catchments. We investigated nutrient dynamics during three summer storms characterized by different rainfall magnitude in 2012 in a semi-arid catchment of northern China. The results showed that, in response to storm events, nutrient dynamics displayed big variation in temporal trends of nutrient ...


    By IWA Publishing

  • Storm Water Plan Case Study

    Global was contracted by a local Road Commission site. The Road Commission site serves as the county level road agency, which maintains more than 1,813 miles of roads and streets and over 250 signalized intersections. The Road Commission contains six sites across the county. Each site is responsible for its particular area. The sites all include maintenance garages, diesel and gasoline ...

  • Compost in the mix for storm water management

    Bioretention areas, also known as rain gardens, are increasingly being used to capture and treat storm water runoff from impervious surfaces such as roofs, sidewalks and parking lots. These landscaped areas often feature native plants installed in an engineered soil mixture that includes compost. “Bioretention areas or rain gardens are an attractive storm water Best Management Practice (BMP) ...


    By BioCycle Magazine

  • Nonprofit takes the recycling world by storm

    WITS non-profit located in St. Louis Missouri has broken all the rules for 2006. In less than 5 years they have become 100% sustainable through their unique and one of a kind operation. What do they do? Recycling/reuse and community development. In less time thatn most for profits generate a revenue, the nonprofit has gone from a 20,000 budget to over half a million dollar budget. Recycling over ...


  • 2013: a ‘perfect storm’ in air quality

    As many countries fail to meet air quality targets and large numbers of premature deaths still result from air pollution, Jim Mills, a particulate monitoring specialist and Managing Director of Air Monitors, explains why 2013 will be a pivotal year. In November 2011 Janez Potočnik, European Commissioner for the Environment, expressed his determination to make 2013 the ‘Year of ...


    By Air Monitors Ltd.

  • Selection of monitoring locations for storm water quality assessment

    Storm water runoff is a major contributor to the pollution of receiving waters. Storm water characteristics may vary significantly between locations and events. Hence, for each given location, this necessitates a well-designed monitoring campaign prior to selection of an appropriate storm water management strategy. The challenge for the design of a monitoring campaign with a given budget is to ...


    By IWA Publishing

  • Mononov specified for europe’s largest storm overflow

    Through its Spanish distributor, Albosa, Mono has supplied 32 stormscreens and 46 progressing cavity pumps to the UMAC Wastewater Treatment plant, which was designed to handle a maximum flow of 129,600m3 per day. These high performance stormscreens, which offer an alternative to conventional mesh and powered screens for handling storm overflows, have been installed to ensure that no contaminated ...

  • Novel Approach to Storm Water Management for BNR Facilities

    ABSTRACTOne of the major challenges faced by most wastewater treatment facilities today is the need to develop and operate a sound and responsive storm water management program in the absence of an assured and adequate source of funding. This paper will discuss various strategies, such as flow equalization and off-line storage of MLSS, which could be implemented to mitigate the negative impact of ...

  • Wood products company weathers the economic storm

    Working harder on improving systems, packaging efficiencies and product diversification, company carves out a path to broaden operations. AMID the economic slowdown, Rivard Companies in East Bethel, Minnesota has chosen to view these times not so much as problematic but rather as a time to rethink strategies. This has meant broadening the scope of their operation through new products and new ...


    By BioCycle Magazine

  • Building soils for storm water compliance and successful landscapes

    THE SOILS for Salmon project - initiated in 1999 by the Washington Organic Recycling Council (WORC) - has been building momentum through collaboration with the Washington Department of Transportation (WSDOT), regulators at the state Department of Ecology, local governments, scientists, and green leaders in the building, landscape and development industries. Over the years, the Soils for Salmon ...


    By BioCycle Magazine

  • A warming world means more destructive storms

    Elevated global temperatures bring a number of threats, including rising seas and more crop-withering heat waves. Higher surface water temperatures in the tropical oceans also provide more energy to drive tropical storm systems, leading to more-destructive hurricanes and typhoons. The combination of rising seas, more powerful storms, and stronger storm surges can be devastating. Just how ...


    By Earth Policy Institute

  • DFW direct bury of storm sewer case study

    Airport Solutions North Texas Contracting has placed the first HOBAS pipe at DFW International Airport in the Dallas/Fort Worth mid-cities. That first installation was a repair to an 84-inch corrugated steel culvert that had failed and created a sink hole approximately 30 feet deep and almost 20 feet in diameter after a series of heavy rains in 2007. North Texas Contracting of Keller, Texas ...


    By Hobas Pipe USA

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