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Featured White Papers & Case Studies |
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White Paper: New One-Dimensional Implicit Numerical Dynamic Sewer And Storm Model |
| A one-dimensional hydrodynamic numerical model has been developed and implemented into Haestad Methods' hydraulics software for modeling of unsteady flows in sewer and storm water urban drainage system. The new numerical model uses an implicit four-point, finite difference solution technique to solve the one-dimensional Saint-Venant equations. Advanced numerical techniques, such as Local Partial Inertial modification for subcritical, supercritical, and transitional flows, and relaxation for pipe/channel networks, are used to achieve computational performance and robustness as required for practical use in a water resources engineering commercial software package... |
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White Paper: An Innovative Method For Modeling, Analysis, And Prediction Of Structural Stormwater BMP Performance |
| Many stormwater structural Best Management Practices rely on gravitational particle settling for sediment removal. The University of Minnesota's St. Anthony Falls Laboratory and BaySaver Technologies, Inc. have been able to establish statistically valid empirical correlations between the dimensionless Peclet Number (Pe) and sediment removal efficiencies in hydrodynamic separators. The Pe is defined here as the ratio of advection to diffusion in the hydrodynamic environment. This article outlines the use of Pe-sediment removal relationships and experimental data to develop models for projecting BMP sediment removal performance... |
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White Paper: Comparison Of Stormwater Quality Treatment Guidelines And Critical Structural Best Management Performance Factors |
| Provisions to protect source water have become an important consideration in urban development in North America. In the United States, Phase I and Phase II of the U.S. EPA's stormwater program require owner/operators to address stormwater runoff pollution issues. The program relies on National Pollutant Discharge Elimination System permits to implement programs and practices to control polluted stormwater runoff. The guidance manuals developed for stormwater quality management focused on traditional structural Best Management Practices (BMPs) such as swales, ponds and porous pavement. Due to lack of studies at the time, little or no guidance was provided for manufactured BMPs. As such regional and locals governments were left to use their best judgement to establish sizing guidelines for manufactured BMPs... |
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Case Study: Pumping Out The Waters And Pumping Up The Praise Down In The Heart Of Georgia's 'Low Country' |
| After decades of extensive property damage due to flooding that occurred during hurricanes and heavy rain storms, the city of Savannah and its environs is now near-fully protected from such storm events. This area received the name the 'low country' as most areas are only a mere 7.5 feet above mean sea level. Abnormally high tides associated with storm events and their accompanying heavy rains caused this area to flood frequently. Six very large stormwater pumping stations, each equipped with as many as eleven large Flygt electric submersible propeller pumps provide protection for the people and property of the area, which is one of the leading commercial seaports of the southeastern United States... |
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Case Study: Flow Modeling Software Helped To Provide Flood Protection In Miami-Dade County |
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Miami-Dade County has experienced remarkable growth over the past thirty years, with a population that has grown to 2.3 million. As a result of the failure of existing stormwater infrastructure, the county commission created a Flood Management Task Force which received support from the Florida Department of Community Affairs, the South Florida Water Management District, the U.S. Army Corps of Engineers, the Federal Emergency Management Agency and several local municipalities. Flow modeling software was utilized for evaluation of the mitigation benefits provided by different system enhancements and operational scenarios... |
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Case Study: Creative Storm Water Solution — Paving The Way For Atlanta's New Lindbergh City Center Station |
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The Metropolitan Atlanta Rapid Transit Authority (MARTA) carries more than 550,000 passengers each day on its buses and rail system. The Lindbergh City Center station is near the heart of Atlanta. For years it has been the site of MARTA headquarters, as well as an aging public transit station. The 47-acre site also included several large, uninviting parking lots and three abandoned warehouses. After two and a half years of work, it is a gleaming new commercial, residential, and business center. A project of this magnitude always involves several significant public works infrastructure issues, and the Lindbergh City Center was no exception. One of the biggest challenges faced by developers and the engineers was the issue of stormwater runoff... |
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Stormwater & Erosion Control
Product Guide |
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BayFilter |
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 BayFilter™ consists of a vault into which cartridges housing cylindrical spiral-wrapped layered filter fabric, containing a mixed silica/sand media, are vertically situated. The unique spiral configuration facilitates influent flow over the entire surface area and allows for highly effective pollutant removal at a maximum flow rate of 30 gallons per minute...
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EnviroTrap Catch Basin Insert |
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 The EnviroTrap is a cost effective catch basin insert option to improve water quality of our Lakes, Streams, and oceans. The EnviroTrap can easily be retrofited to existing structures with a sump or installed on new projects...
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Flo-Gard Dual Vortex Hydrodynamic Separator |
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 The unit uses two independent cylindrical separators: Low flow is diverted by the inlet to the first separator, while moderate flow begins to overflow the first control weir and enter the second separator. Settled particles collect in the bottom storage area of the unit which is isolated from the fluid outlet, minimizing resuspension...
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xpswmm Modeling Software |
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 xpswmm is a comprehensive software package for modeling stormwater, sanitary and river systems. xpswmm simulates natural rainfall-runoff processes and the performance of engineered systems that manage our water resources...
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ORC Series - Automatic Stormwater Filters And Strainers |
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 Orival Water Filters' ORC series of self cleaning coarse strainers are for applications where a fine level of filtration is not required. Units are available in 4" through 16" line size to handle flow rates up to 5,000 gpm, and can be installed in parallel to handle larger flow rates...
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PCSWMM For Stormceptor Sizing Program |
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 PCSWMM for Stormceptor is continuous simulation modelling software that combines up-to-date rainfall data from over 1,900 rainfall stations across North America, with a wide selection of particle sizes to design the best system for your site...
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Propeller Pumps |
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 The PL-7000 series of propeller pumps from Flygt are installed in vertical discharge columns the superior choice for pumping very large volumes of water at relatively low heads. The backward-swept, high efficiency blade design in this series provides for a self-cleaning propeller and consistently high efficiency...
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DensaDeg 4D For CSO/SSO |
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 The compact DensaDeg 4D Stormwater Unit combines four fundamental stormwater clarification functions in a single compact unit: 1)grit removal, 2)grease and oil removal, 3)integrated coagulation and flocculation followed by plate settling, and 4)sludge densification and thickening...
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ecoSep Below Grade Oil/Water Separator |
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 ecoSep® is a cost-effective below grade oil/water separation unit that can help keep water clean from oil contaminates. ecoSep is optimally designed for use in point-source and industrial stormwater applications...
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Continuous Deflective Separation Drop Inlet Unit |
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 This precast manhole insert unit uses patented Continuous Deflective Separation technology to effectively and efficiently remove suspended solids, sediments, trash, debris, oil, and grease, along with floatable materials,
from stormwater flows...
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Free Structural Storm Water Quality BMP Manual |
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 National Pollutant Discharge Elimination System is faster, easier and more efficient than ever before thanks to Propex's Structural Storm Water Quality BMP Manual—the industry's most comprehensive storm water management resource...
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©Copyright 2007 VertMarkets LLC, 101 Gibraltar Road, Suite 100, Horsham, PA 19044. All rights reserved. All product names contained herein are the trademarks of their respective holders. |
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Accurately model every aspect of your stormwater system including rainfall, runoff, inlet capture and bypass, gravity and pressure piping, detention ponds, outlet structures, open channels, culverts, and more...
