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Stormwater

StormTrooper® Systems

Stormwater runoff from urban areas carries pollutants and trash into the storm drainage system. Unlike sanitary sewer systems, stormwater typically receives no treatment. Polluted stormwater eventually drains into public waterways, rivers, aquifers, lakes, and oceans. The pollutants can contain significant amounts of oils and sediment from impervious areas, which could be harmful to the environment, both biologically and aesthetically.

Although dramatic improvements have been made to the Nation’s waters, degraded bodies of water still exist. Approximately 40% of surveyed U.S. bodies of water are still impaired by pollution and do not meet current water quality standards. A leading source of this impairment is polluted runoff.

What is the StormTrooper?
The StormTrooper is an oil grit separator system offering a range of versatile treatment systems that effectively remove pollutants from stormwater and snowmelt runoff. StormTrooper is flexibly designed to protect waterways from hazardous material spills and stormwater pollution, including suspended sediment, free oils, and other pollutants that attach to particles. The StormTrooper uses patented technology that ensures pollution control and contained during rainfall.

How StormTrooper Works

  • Stormwater enters the StormTrooper control manhole through the inlet pipe(s) and/or inlet grate. The low to moderate flow is directed into the StrormTrooper’s separator where patented technology separation of sediment and free oils occur
  • The non-turbulent separator chamber allows free oils and debris to rise, and sediment to settle
  • Free oils and other floatables remain trapped
  • Sediment settles and lies dormant and retained for later removal
  • Treated stormwater exits the separator to the control manhole
  • The treated stormwater exits the control manhole via the outlet pipe

Ideal Uses

  • Sediment & Hydrocarbon control
  • Hydrocarbon Spill control
  • Floatables, trash and debris capture
  • Pretreatment for Filtration, Detention/Retention systems and Low Impact Development

Features

  • Manufactured of precast Class II 4500 PSI concrete, steel or fiberglass
  • Coalescing media pack (CMP)
  • Debris screen
  • Control manhole

Applications

  • Parking lots, streets and highways
  • Service stations
  • Truck terminals/railroads
  • Auto parts/salvage yards
  • Industrial plants
  • Airports

StormTrooper

The most commonly used stormwater quality treatment system that is economical, easy to install and maintain, offers flexible design and long-standing performance. The function of the StormTrooper® stormwater interceptor is to intercept free oils/solids and retain them for periodic removal. The StormTrooper interceptor is designed to treat a finite amount of stormwater; typically sized for the initial flow rate of a storm event. Most studies have shown that the pollutants are found in this “first-flush” stormwater discharge.

Stormwater runoff can range from low to very high flow rates. A high flow rate can be detrimental to a stormwater interceptor in that excessive flows tend to scour (stir up) the existing retained pollutants left from the previous storm event. The StormTrooper® controls high flow rates by utilizing a control manhole. The control manhole is engineered to divert the design flow through the interceptor while bypassing high flows to the storm sewer.

As water enters the treatment chamber of the interceptor, trash and light debris are filtered through a screen; heavy oils immediately rise to the surface, Total Suspended Solids (TSS) sink to the bottom. The remaining oily water mixture flows through the second chamber. Both the smaller oil droplets and the finer TSS are progressively separated. Coalescing media is used to separate significant concentrations of hydrocarbons. In the final stage, effluent is discharged at the bottom of the interceptor preventing collected pollutants from entering the outlet piping. Collected oils and solids will remain in the interceptor until removal.

Applications

  • Parking lots, streets and highways
  • Service stations
  • Truck terminals/railroads
  • Auto parts/salvage yards
  • Industrial plants
  • Airports

System Components

  • Coalescing media pack (CMP)
  • Debris screen
  • Control manhole
  • Precast concrete structures
Additional Resources
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