Wastewater treatment plant

The second stage of the $4.8 million upgrade to Heathcote Water Treatment Plant is progressing, with the project due to be completed in early 2020.

Coliban Water’s Manager Infrastructure, Corey Bourne, said the second phase includes the installation of a permanent Powdered Activated Carbon (PAC) dosing system, which provides a means of managing taste and odour issues in the raw water supply.

“Until now, we have been using a temporary PAC treatment system at the site on an ongoing basis to manage the taste and odour compounds in the raw water. To have this now made permanent will provide greater ongoing management for fluctuations in raw water quality,” Mr Bourne said.

The plant draws raw water from either Lake Eppalock or Caledonia Reservoir depending on demand and supply factors in the broader water supply system.

Mr Bourne said a further benefit of the upgrade works was that they will address any taste and odour compounds found in the raw water source being used at the time.

Works completed in stage one included the installation of a permanent UV water treatment system and a chlorine contact tank.

“These two upgrades are now operational and will see an improvement to water disinfection, which provides an additional process to remove microorganisms that are present in the raw water supply. UV treatment of water is a common disinfection method used by a number of water corporations,” Mr Bourne said.

A new wastewater handling system is also being installed, which will re-use as much of the wastewater at the plant as possible and help to address inefficiencies.

“It means we can prevent excess wastewater being released to the sewer network, and in turn, reduce the volume sent to our Heathcote Water Reclamation Plant,” Mr Bourne said.

“We thank local residents for their patience due to some noise at the plant associated with rock breaking and site clearing.”

Charlotte Pordage is Editor of Utility magazine, a position she has held since November 2018. She joined the team as an Associate Editor in October 2017, after sharpening her writing and editing skills across a range of print and digital publications. Charlotte graduated from Royal Holloway, University of London, in 2011 with joint honours in English and Latin. When she's not putting together Australia's only dedicated utility magazine, she can usually be found riding her horse or curled up with a good book.

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