Defence has installed a water treatment plant (WTP) at Army Aviation Centre Oakey (AACO). The WTP was delivered to Australia in late July 2017. It will treat contaminated groundwater on the Base and reinject the treated water back into the aquifer to reduce the amount of contaminated water leaving the Base. The WTP is currently in a testing phase and will become operational in October 2017.
The water treatment plant works by selectively removing PFAS compounds using specially designed media called Ion Exchange Resin.
The WTP is developed by a United States based company called Emerging Compounds Treatment Technologies (ECT2) that specialises in mitigating the impacts of emerging contaminants. They have been contracted by Defence to install and pilot plants at two Defence bases to test the functionality of the technology in the Australian environment.
The WTPs use the latest technology, Sorbix A3F resin, a regenerable and strong adsorbent synthetic resin with ion exchange functionality, to treat water. The treated water is closely monitored to ensure that it meets the relevant water screening criteria set by Department of Health.
The system is fabricated into a 40 foot container reducing the space required on the Base for the system to be situated and produces smaller waste streams compared to other water treatment plants for PFAS.
The Water Sampling Summaries track the PFAS concentrations against the limits defined by the relevant adopted drinking water screening criteria. They include results for perfluorooctanoic acid (PFOA), 6:2 fluorotelomer sulfonic acid (6:2 FTS) and the sum of perfluorooctane sulfonic acid (PFOS) and perfluorohexane sulfonic acid (PFHxS).
The water quality data is drawn from water samples on both untreated and treated water. The summaries of water sampling results can be downloaded below.