biofilterCatching Contaminates Off Metal Roofs Before They Hit the Ground

There is very unique, yet old school treatment process that has just entered into stormwater purity market. It has the ability to maximize flow capacity and solids contact with the reactive biofilter media. This, in turn, offers the ability to completely treat your facility’s hotspots with a very tight, yet simple to service treatment process package.

  • Unique in the way that a filter in an upflow configuration will tend to disrupt the ability of the stormwater to channel through the biochar media.

  • Old school in the way that industrial upflow sand filters have been in use
    as river intake filters for over 40 years.

275 Gallon ModelWe can utilize virtually any filter media; however, the lab test results are focused solely on the use of a filter-grade biochar. Results that have showed 99.7% removal of metals over a year’s service.

In a nutshell, we redirect the stormwater downspout into our 1st stage of separation…

  • The stormwater flows through our geotextile filter insert – stripping out the suspended solids.

  • The stormwater collects at the
    gravel underdrain (protected by a multi-weave filter cloth and gravity flows to the bottom of the 2nd stage.

  • The stormwater is redistributed once entering into the 2nd stage of separation and flows upwards through the biochar media.

  • The biochar media strips the total/dissolved metals, BOD, COD, and a limited amount of nutrients from the stormwater.

  • The stormwater breaks away from the biochar and flows through a grated filter screen into a clearwell.

  • The stormwater overflows into a launder collection system and gravity discharges back to the downspout outlet.

Easy to Site: Our small process unit is tight enough to fit through 30” doorways and fit into very tight spaces.

Easy to Service: No tools are needed to service any part of this BioFilter process.

Easy to Maintain: The 1st stage insert is designed to be washed out and reused.

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55-Gallon Model
Dimensions Width 27"
  Depth 28"
  Height 76"
Flow Capacity Max Treated 7.3 gpm
  Overflow 16 gpm
1st Stage
1st Filter

8-oz geotextile

  2nd Filter Multi-weave Filter Cloth
2nd Stage
Underdrain 55-gallon
Gravel with
Multi-weave Filter Cloth
  Organic Media Choose
  Amount of Media 4 cu. ft.
  Filtered Collection Launder


275-Gallon Model
Dimensions Width 48"
  Depth 50"
  Height 100"
Flow Capacity Max Treated 25 gpm
  Overflow 50 gpm
1st Stage
1st Filter

8-oz geotextile

  2nd Filter Open Cell Filter Cloth
2nd Stage
Underdrain 275-gallon
Open Cell Filter Cloth
  Organic Media Choose
  Amount of Media 20 cu. ft.
  Filtered Collection Launder


National Sales
Technical Engineering


Find out about our other Storm Water Management and Erosion Control Products:



Request For Quotation
Upflow BioFilter Specs
Client Information (* = required field)






*Company Contact:

*Phone Number:

*Email Address:

Stormwater Contaminate Concerns
Limit (ppb):
Limit (ppb):
Limit (ppb):
Limit (ppb):
Limit (ppb):
Limit (ppb):
Other: Limit (ppb):

Roof Type:

Metal | Tar Paper Comp.


HVAC Equipment:

Yes | No

Downspout Size:
Pipe Diameter:

Squared? Yes | No
Pipe Type:

Galvanized | Iron

Steel | Plastic | ABS

Schedule 80

Roof Drainage Area:

Process Style:

Upflow | Downflow

Design Flow Rate:

Incoming Zinc Levels:

Other Contaminate Concerns:

Envelope Size Restrictions:

Docks | Overhangs

Outside Racks | Man Doors

Truck Pass-Throughs

Base Type of Ground:

Concrete | Asphalt

Dirt/Gravel | Steel Curb


Flat | Slight | Substantial

Discharge Type:

Drainage Pipe | Ground-Back


Finish Look:

Industrial | Architectural

Media Preference:

BioChar | Peat Moss

Compost | Sand

Local Availability:

Yes | No

Does the end user have maintenance personnel available for monthly insert cleaning?

Is there a wash area for cleaning BioFilter insert?

Does the BioFilter require a stratification stage for heavy solids loading?

Yes | No