SPEL Basin


SPEL Basin Modular Bioretention System is a highly advanced stormwater filtration system. Its size and capacity make it ideal for stormwater treatment trains that require high pollutant reduction in a small footprint. It can be used in place of standard catch basin structures, rain gardens, bioretention cells and media filters.
As a self-contained treatment train, it incorporates the following treatment components:

  • screening
  • hydrodynamic separation
  • media filtration
  • bioretention filter

The bioretention filter is an enhanced sub surface flow vegetated wetland with a special blend of adsorptive media.
The Modular Bioretention System’s treatment train approach makes this system very effective at removing a wide range of stormwater pollutants.

  • Application. Can be used in a wide range of configurations for new construction and retrofit applications.
  • Versatility. Because of its availability to accept variable pipe sizes or runoff directly from the built-in curb or drop inlet, this system can be used in most situations, regardless of site constraints.
  • Lower Maintenance. A pre-filter chamber eliminates the need for maintenance to be undertaken in the Biorention chamber.
  • Volume Sizing. The Modular Bioretention System can be installed downstream of retention systems.
  • Commercial storm water treatment
  • Industrial storm water treatment
  • Residential storm water treatment
  • Used in place of rain gardens