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 Terre Kleen  Inclined Plate Hydrodynamic Separator

Terre Kleen is a patented, (6,676,832 B2), inclined plate hydrodynamic separator that captures gross pollutants, hydrocarbons, grease and sediment from stormwater runoff.

Laboratory testing has confirmed:

  • Terre Kleen™ captures pollutants, including sediment of 20 micron in size and larger.

  • Terre Kleen's internal by-pass structure prevents the loss of gross pollutants during high flow events, with no scour or re-suspension of captured pollutants with no restriction of the water flow.

  • 98% removal efficiency in field test conducted by EPA ETV NSF.

Terre Kleen's stacked, inclined plate sedimentation design provides a large sedimentation area in a small footprint, prevents re-suspension of captured pollutants or by-pass of untreated stormwater, and continuously captures pollutants from "first flush" until the end of the storm.

The Terre Kleen Advantage:

  • Site-Specific Modular Design

  • Multiple pollutant removal

  • Stacked inclined plates provide large sedimentation area within a compact space

  • Internal by-pass allows capture of gross pollutants during high flow events

  • Protected sediment storage area prevents re-suspension or scour of captured pollutants

  • Low cost, time-saving installation

  • Low maintenance cost (fewest gallons per sedimentation area)

  • Documentation of pollutant and nutrient removal for Sediment and Nutrient Reduction Credits trading.

Terre Kleen Installation

Watch a Terre Kleen™ Installation
Uses Windows Media Player or Quicktime


Verified and Certified
Stormwater Treatment Technology

Terre Kleen™ Hydrodynamic Separators are certified by the
New Jersey Department of Environmental Protection (NJDEP).
[ View Certification ]

Their performance has also been verified by the
New Jersey Corporation for Advanced Technology (NJCAT)



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