Demonstration System Tour: Property TF9

Technologies: Orenco Systems, Inc. Advantex AX-20 System and shallow narrow drainfield

For more information on textile media filters: This technology is a proprietary device under the trade name AdvanTex®, manufactured and distributed by Orenco Systems®, Inc. For further information about this technology, see the vendor website at www.orenco.com.

Year Installed: Spring 2003

Site Description:

• 5,000 sq ft lot, 3-bedroom house, 2 residents 7 months/year (design flow: 450 gallons per day)
• Wetlands within 200’ of system
• Glacial outwash
• Limiting factors: Small lot; Water table within 30” of surface
• Private well
• Previous system: cesspool

System Treatment Train:

Wastewater exits the home through a building sewer (A) and enters a 1,500 gallon, two-compartment, fiberglass septic tank (B). A time-dosed pump doses effluent from the tank to the top of the textile filter (C) located under deck, where it percolates down through the textile media. The media consists of vertically hanging textile sheets. The filtered effluent then recirculates back to the inlet end of the septic tank by gravity flow to a recirculation valve. When effluent level in the tank is low, effluent flows back into the septic tank. When the level in the tank is high, effluent is diverted to the drainfield discharge basin (D) for final dispersal to a shallow narrow drainfield (E).