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Gregory River WTP


Construction of a new plant adjacent to the existing plant. The new plant is to achieve 72 L/s instantaneous output and to improve the quality of the treated water under all raw water quality conditions.

The upgrade includes:

  • Upgrade of the existing raw water pumps;
  • PAC dosing into contact tank for TOC/DOC removal process.
  • A coated dual media filter (filter coal and sand) to enable effective oxidation and removal of the soluble manganese present in the raw water;
  • A new chemical dosing facility housing PAC, alum or ferric coagulants, polymer, caustic soda and sodium hypochlorite. The chemical dosing facility shall be provided with a drive through delivery bund.
  • Critical on-line instrumentation for monitoring pH, turbidity and free chlorine residual;
  • Sludge handling improvements including a backwash balance tank and construction of a new sludge drying beds;
  • Clear water storage with separate inlet and outlet;
  • Upgrading of the access road into and around the site to enable the delivery of bulk chemicals and access to the plant;
  • Installation of supporting infrastructure such as interconnecting pipework and valving, new monitoring equipment, new instrumentation and control equipment and electrical works.
  • A new building for the switchboard and control room.

ClientLogo_Bundaberg Regional Council



Client Bundaberg Regional Council
Project location Gregory River, Queensland
Contract system Design & Construct
Contract sum $18 million
Contract completion Due November 2021
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