Demonstration System Tour: Property TF5

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: Summer 2002

Site Description:

• 87,210 sq ft lot, 3-bedroom house, 2-bedroom guest house, 2-5 residents year round (design flow: 450 gallons per day and 300 gallons per day)
• No wetlands within 200’ of system
• Silt loam soil
• Limiting factors: Water table at 36” from surface
• Private well
• Previous system: conventional septic system (failing)

System Treatment Train:

This is a shared system with a 3-bedroom home and a 2-bedroom guest house. Wastewater exits both buildings through the building sewer and enters into (2) 1,000 gallon, concrete septic tanks, one for each building (not shown in photos). The effluent exits the septic tanks by gravity, and then enters a common 1,500 gallon recirculation tank (A) where a time-dosed pump doses effluent from the tank to the top of two textile filters (B), 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 recirculation 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 (C) for final dispersal to a shallow narrow drainfield (D).