Dalby - Reverse Osmosis

Location:

Dalby, QLD

Client:

Dalby Town Council (Now Western Downs Regional Council)

Related Industries:

Duration:

2004 (1st Stage) - 2011 (2nd Stage)
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In 2004 Dalby Town Council (Now Western Downs Regional Council), embarked on a project to supplement the Town water supply with treated bore water using a Reverse Osmosis Process. Rather than go with a “skid package” from inflexible vendors, they decided to have a customised plant built to their exact specifications.

Downey Engineering were selected as a specialist contractor to the Council to design and integrate the control system for the new plant.  A second stage was added in 2011 and the plants now supply more than a third of Dalby's water supply.

Background

The town of Dalby (population 10,000) is approximately 200 km west of Brisbane. Historically, the town water supply was obtained from the Condamine River and groundwater bores close to the water treatment plant.

In 2004, WDRC (Formerly Dalby Town Council), embarked on a project to supplement the Town water supply with treated bore water using a Reverse Osmosis Process. Rather than go with a “skid package” from inflexible vendors, they decided to custom build a plant to their exact specifications.

Downey Engineering were selected as a specialist contractor to the Council to design and integrate the control system for the new plant.

Allen Bradley “Control Logix” was selected, along with CitectSCADA to complement Councils existing infrastructure.

Downey Engineering worked closely with Council, Consultants Parsons Brinkeroff, the RO plant designers and the installing contractors to ensure a high quality control system solution.

The plants second stage was commissioned in 2011.  Control system expansion was seamless due to the foresight of Dalby Town Council to engage a specialist integrator in the project planning phase and plan for future growth and expansion.

The Challenge 

• To design, build, program and commission a complete control system for the RO process.
• To ensure a high level of flexibility and documentation for ongoing plant performance.

 The Solution

• Rockwell Automation “Control Logix” selected along with Citect SCADA.
• Full SCADA redundancy and paging system embedded.
• Ethernet communications architecture established to cater for immediate demands and future expansion.

 The Result

• Full plant startup completed on time and on schedule.
• Sstem held up as an example of innovative RO process control augmenting rural water supplies.