Membracons engineers calculated that replacing the liquid oxygen injectors would be the most economical solution as the operation and maintenance costs of the system were extremely high and provided the most room for savings.

An FFBATM system was installed comprising of 4 floating aerators, 1 blower, air feeding pipes and manifold.

In order to provide the fine bubble membranes most suited to the mill's aggressive wastewater, Membracon undertook preliminary tests on a selection of materials. Four types of membranes were tested (EPDM, Polyurethane, Silicone and PTFE) over a period of 3 months. Upon completion of the tests and based on laboratory results, the decision was made to use Polyurethane membranes for the project.