Murray Princess helps keep one of the world’s longest rivers beautiful.

The Murray Princess has installed 4 x AeroDAF 13 units which were specially designed to treat the greywater from this 150-guest paddle steamer.

The Need

Sealink needed the Murray Princess to comply with South Australian legislation to either treat or contain greywater on the Murray River.

The Solution

Aerofloat worked closely with the staff of the Murray Princess over a period of 18 months to carefully design, construct and install a sophisticated greywater treatment system for the paddle steamer.

The Benefit

The Murray Princess is now compliant with its greywater management and enables the majestic Murray River to continue to be enjoyed for many visitors to come.


The Murray Princess is the largest inland paddle steamer in the Southern Hemisphere.

To comply with new South Australian EPA regulations, the vessel needed to either treat or contain its greywater.  Containment was not an option for the Murray Princess, which is a 150-berth ship.  Therefore Sealink engaged Aerofloat, the only company who had successfully completed the rigorous certification testing on the AeroDAF.

The Aerofloat Solution

With four Aerofloat 13 models installed, the Murray Princess can now process up to 3000L/hr of greywater.

Aerofloat engineers were able to draw on their extensive experience in greywater and industrial wastewater treatment to design a total wastewater treatment system for the Murray Princess.  The system includes not only the management of Aerofloat units working simultaneously, but also a flow balance system and a pH correction system.  The hydraulic balancing and pH correction was necessary to handle variable flows and the caustic chemicals used when cleaning the boat at the end of each cruise.  With limited space for such a sophisticated wastewater treatment system, the compact Aerofloat system was the obvious choice.


Aerofloat was able to install four units at the back of the vessel and seamlessly build them into cabinetry.

Testing showed that the plant was able to consistently treat the greywater to the desired effluent quality, ensuring the Murray Princess complied with the EPA legislation.

After Care Service

Aerofloat can help you maintain optimal performance of your wastewater treatment system long after installation.

Servicing – Chemical Supply – Sampling & Analysis – System Automation & Remote Monitoring

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