Other alternative systems may be installed for secondary treatment, although such systems are often more complex and restricted in application. Consult a local contractor or the New York State Department of Health’s Individual Residential Wastewater Treatment Systems Design Handbook (1996) by contacting Health Education Services at (518) 439-7286.
Ecoflo Biofilter System
Premier Tech Environment (manufacturer) 1 Avenue Premier . Riviere-du-Loup, Quebec . Canada G5R 6C1 (877) 295-5763 . www.premiertech.com On lots unsuited for leach field treatment of septic tank effluent, biofiltration systems provide the surface area and absorptive medium required for microbial treatment. The Ecoflo biofilter uses peat moss as the growth media for biological treatment, with a life expectancy of eight years, for 95% removal of BOD, 90% removal of solids, and 99% removal of fecal coliform. The system can be buried, partially buried, or completely aboveground, and has no electrical requirements if effluent is gravity-fed. The system can discharge to the environment if engineered plans and permits are in place, or a modification allows collection of effluent.
Cost: $3,895, including a seven-year maintenance service, for the basic Ecoflo system. The cost for replacement filter media is $850,including new maintenance agreement (old media must be pumped out at owner’s cost); $999 for effluent collection parts. Manufacturer offers additional warranties on shell and components. (Data from US Environmental Protection Agency, Region 1)
Eljen In-Drain System With 2-Stage Bio-Matt
Eljen Corporation . 125 McKee St. . East Hartford, CT 06108 (800) 444-1359 . www.eljen.com/in-drain.html
The Eljen In-Drain System uses layers of fabric to facilitate microbio- logical growth and aid oxygen transfer through the system. The system can be installed under a mound or in-ground, and can greatly reduce the area required for secondary treatment. Installation requires a six-inch sand layer and a layer of material to prevent siltation, but no stone or gravel.
Orenco’s AdvanTex Treatment System
Orenco Systems . 814 Airway Avenue . Sutherlin, OR 97479 800-348-9843 or 541-459-4449 . www.orenco.com
Orenco's AdvanTex® Treatment Systems provide consistent, reliable onsite treatment of residential and commercial wastewater, even under peak conditions.
AdvanTex Treatment Systems are ideal for small sites, system upgrades and repairs, new installations, pretreatment, and nitrogen reduction.
AdvanTex Treatment Systems turn wastewater into clear, odorless effluent using a fiberglass basin filled with an engineered textile material. This highly absorbent material treats a tremendous amount of wastewater in a very small space.