Infiltrator Water Technologies’ AeroFin offers a new passive onsite wastewater treatment system option for residential, community and commercial applications where treatment is needed with limited space.

AeroFin systems were engineered to create a biological ecosystem that digests the organic matter in wastewater on a continuous basis without the need for electricity or replacement media. “These systems offer a high level of treatment in a small footprint,” says Jim Bransfield, marketing director for Infiltrator. “It is ideal for small lots or lots with site restrictions.”  

The concept and design is similar to Infiltrator’s Advanced Enviro-Septic, as it is a form of combined treatment and dispersal system. “Effluent is treated and dispersed in the same footprint,” Bransfield says. “Having a proprietary media and a specified system sand allows for ideal treatment of effluent before reaching the receiving soil layer.”

Bransfield says the reduced footprint of an AeroFin installation minimizes site disturbance and allows installation in areas where a traditional system may not fit. The vertically elongated pipe configurations measure 2 inches wide by 12.75 inches tall and come standard with a geonetting and geotextile fabric wrap around each 8-foot length. Wastewater leaving a septic tank will flow through the conduit, before passing through the geogrid mesh, followed directly by geotextile fabric before flowing out the system into a minimum of 6 inches of the system sand. 

AeroFin conduits and manifolds are manufactured using recycled polyethylene and the modular design features flexible configurations for sloped or curved sites. Each unit features snap-lock fittings for easy connections and PVC piping is used for system assembly. The compact design also permits transportation in the bed of a standard truck. 

“The installation process involves installing a 6-inch sand bed, laying out and properly spacing AeroFin rows, which is made easier with a spacing tool,” Bransfield says. “Next is connecting rows and inletting with the AeroFin header manifold.” AeroFin manifolds allow for quick connections and set installation widths at the standard 6-inch centers.  Once everything is connected, all that’s left is backfilling and properly grading around the system to divert surface water away. According to Infiltrator, it has been demonstrated to remove up to 99% of wastewater impurities, producing a 30-day average TSS and CBOD levels below 5 mg/L, delivering NSF Class 1 treatment. 800-221-4436; www.infiltratorwater.com