Demonstration System Tour: Property TF15

Technologies: Orenco Systems, Inc. Advantex AX-20 System and a bottomless peat filter module as a 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: June 2003

Site Description:

• 7,500 sq ft lot, 2-bedroom house, 1 resident year round (design flow: 300 gallons per day)
• Wetlands within 200’ of system
• Glacial till
• Limiting factors: Water table at 15”
• Public water supply
• Conventional septic system

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), 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 single raised bottomless peat filter module (E). The peat filter is set on a 1 foot thick pad of 1.5 - 2 inch crushed washed stone.