Aqueous Solutions

Aqueous Solutions

- Reverse Osmosis Membrane Systems



High quality water can be produced from brackish, seawater and contaminated sources reliably and on a scale ranging from a few thousand litres per day to many millions.

Improvements in membrane technology in recent years have seen costs reduce and efficiencies increase resulting in reverse osmosis desalination being widely accessible across a range of applications.

Aqueous have more than a decade’s experience installing RO systems, producing drinking water from natural resources such as bores, rivers and the sea as well as facilitating recycling and reuse of contaminated industrial and mining waste water.

The Process

Design and build 

Aqueous use state-of-the-art 2D and 3D software to design our desalination systems. Process design is optimised using the latest computer aided simulation software. Optimised designs mean higher efficiency plants resulting in lower energy, consumable and operating costs.

Designs are reviewed using a hazard and operability study (HAZOP) process to ensure operator safety and compliance with all relevant Australian standards and industry regulations. We follow stringent in-house drafting and documentation standards.

Water quality and pilot testing

To help clients evaluate the operational and cost benefits of different treatment technologies, we can provide water quality testing and small-scale mobile pilot plants to optimise the process for the full scale plant.

RO Pretreatment

Each RO plant we build has a tailored pretreatment system to handle the feed water supply.
Our range of conventional and membrane pretreatment solutions include:

  • cartridge filtration
  • media filtration with coagulation (optional)
  • iron, manganese removal
  • microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF)
  • pretreatment chlorination and dechlorination

RO Post-Treatment

Post-treatment processes prepare desalinated water for use or consumption. As part of this process, Aqueous can provide:

  • remineralisation and pH adjustment
  • post-treatment U.V and chlorine disinfection
  • Electro Dialysis Reversal (EDR) for ultra pure applications


Containerisation minimises onsite installation time and provides ease of transport. Aqueous can supply ultra filtration & reverse osmosis systems fully integrated inside a 20’ or 40’ shipping container, including pretreatment, chemical dosing, disinfection, post treatment remineralisation and pH adjustment.

High iron content in bore water is a common problem afflicting many irrigation projects. Blocked sprinklers, clogged drippers and supply lines, toxic levels of iron affecting plant growth are all common symptoms of high iron content. Often the iron is in soluble form (clearwater iron) as it exits the bore only to slowly precipitate out throughout the whole distribution network. Normal filtration systems are not effective at removing this form of iron. Aqueous Solutions offers a catalytic iron removal media system capable of removing iron to negligible levels. These systems are designed to operate automatically and backflush as necessary to discharge iron removed to a separate holding area.

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