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Case Study: Toll Group

Background to the challenge

Toll Group is a transportation and logistics company. They provide road, rail, sea, air and warehouse services to both Australia and the wider Asia Pacific region.

With over 1,200 sites across 50 countries, Toll Group gives their customers a truly global reach. They are an industry leader in the fields of logistics and transportation.

The problem

Toll Group's Darwin site needed a washwater recycling and stormwater management system to provide pH correction and disinfection, while also ensuring water was suitable for reuse in wash bays.

Darwin's harsh climate meant that the solution needed to be hardy. It had to be able to operate reliably in the city's hot and humid tropical climate and without access to a sewer point.

The solution was a custom-designed turnkey containerised water treatment and water recycling system, which was suitable for use in very hot and humid weather.


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What Cleanawater did

Cleanawater designed and built a custom water recycling solution. The system recycled water from wash bays and then transferred the treated water to a treated water recycling tank.

The system featured zero discharge, as no discharge point was available. It was also designed to remove suspended solids to 1 micron mean and oil/grease/quick break detergents only. Disinfection was achieved by the use of Sodium Hypochlorite with a pH correction system.

The treatment train included Hydrocyclone Desander, Hydrocyclone Deoiler, Multimedia Turbidex Filter self-cleaning, and 3-stage filtration bank to 1-micron mean. As well as a pH correction system to maintain the pH in acceptable range, Chlorination Disinfections, and 2 x high pressure wash points.


  • Reduced water usage and costs
  • Easy to transport and install, suitable for hot and humid climates
  • Low chemical requirements means low maintenance costs
  • Remote monitoring from Cleanawater for trouble free operation
  • Auto mains water top-up backup and no downtime

After-sales support

Comprehensive after-sales service. Seven days a week. That's the CleanaWater support promise.

We have industry experts located in Melbourne, Brisbane, and Newcastle. So you can always speak to somebody who understands your local market.

They're available around the clock to answer any queries you may have – whether it's about our systems or odour and water treatment in general.

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Cleanawater's end-to-end process

Step 1

Process Development

Cleanawater's project engineers confirm all site parameters, commence design and process evaluations on specific requirements for your waste water treatment plant works.

Step 2

Conceptual Modelling

Conceptual 3D models, predictive flow and performance analysis models are tested prior to manufacturing a site's waste treatment system.

Step 3


We update the design briefs and create build drawings before manufacturing and commissioning at our Melbourne facility.

Step 4


The Cleanawater team complete water waste management installation and commissioning on site – without disrupting your operations.

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