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Tarong Energy – Australia


Veolia Water Technologies Australia has been awarded a contract for the design, supply, delivery, installation, test and commissioning of two water treatment plants at Tarong Power Station.

Project Background

Tarong
Scope: Design, supply, delivery, installation, test and commissioning of two water treatment plants. - Microfiltration (MF) and Reverse Osmosis (...

Hastings Point, Queensland – Tarong Energy, a Queensland Government Owned Corporation, supplies about one quarter of Queensland's electricity supply through hydro, coal-fired and has wind-powered generators in South Australia. Tarong Energy continually explores ways to improve its environmental performance for instance by seeking water conservation opportunities.

 

The Client’s Needs

South Eastern Queensland has been suffering from ongoing drought conditions, leading the storage in the Lake Boondooma & Wivenhoe Dam which are close to Tarong and Tarong North Power Stations to reach near critical levels.
Alternative water resources needed to be explored to ensure supply reliability in the future to the power stations.
Tarong Energy wanted to increase the efficiency of the power station and minimise the environmental effects, as part of a long-term water strategy plan, by reducing the organics load and improving the quality of the feedwater to the demineralised water treatment plant.
They also wanted to provide a reliable and safe high quality drinking water supply on site, removing potential contamination risks.

 

Project & Technology Solutions

Tarong Power Station, 180-kilometres north west of Brisbane near Nanango, is one of Queensland's largest power stations, with a total generating capacity of 1,400 megawatts.
Tarong Power Station uses water for the cooling towers, which is critical to the efficiency of the thermal energy conversion process. The cooling water evaporation reaches 600 litres per second.
Veolia Water Technologies Australia has been awarded a contract for the design, supply, delivery, installation, test and commissioning of two water treatment plants at Tarong Power Station aiming to:
 
  • Provide consistent feed water quality to the existing demineralised water treatment plant by treating cooling water with a Microfiltration (MF) and Reverse Osmosis (RO) Plant.
  • Provide a Microfiltration Plant for securing a reliable and safe high quality drinking water supply on site.
 

Process Description

The Demineralised Plant for Tarong Power Station takes its water from the cooling tower blowdown and the Boondooma dam through a 96-km long pipeline.
The new Microfiltration / Reverse Osmosis Water Treatment Plant will provide up to 2 Megalitres/day of treated water using Microfiltration and Reverse Osmosis to produce feedwater for the existing Demineralised Plant.

The new Water Treatment Plant will:
  • Reduce the amount of raw water used by the power station and increase the amount of drinking water available for the South East Queensland population.
  • Reduce the amount of chemicals used, as the feedwater to the demineralised plant requires less regenerants.
  • Minimise raw water consumption on the Tarong Power Station site while enabling Tarong Power Station to comply with environmental authority license requirements.
     
An additional Microfiltration Plant will provide 250 kilolitres/day of reliable and safe drinking water on site, removing potential risks of having blue green algae contaminating the water supplies.
 
Tarong process description