Wastewater Treatment Plant Improvements

Council’s Wastewater Operations section has made substantial savings of around $400,000 this year thanks to reviewing treatment operations and processes at South Windsor Wastewater Treatment Plant over the past 18 months.

The Mayor of Hawkesbury, Councillor Mary Lyons-Buckett praised the new efficiencies and savings made by Wastewater Operations staff.

“Congratulations to the supervisor; operator in charge and staff for their commitment to making improvements and reducing Council’s costs, which will ultimately benefit our community,” the Mayor said.

One of the key areas identified has included the introduction of new technology including more efficient chemical dosing pumps and variable speed drives that vary the amount of chemicals required for the process optimising chemical consumption. This has helped reduce energy costs through reduced chemical and equipment use, along with an updated Supervisory Control and Data Acquisition computer system that monitors and controls the treatment process.

Cost savings have also been made through a reduction in chemical usage through the better management of plant performance at the wastewater treatment plant at South Windsor, which uses a number of chemicals as part of the treatment process.

The chemical usage has been reduced by developing an advanced understanding of the chemical and biochemical processes occurring at the treatment plant. This has included making changes to where chemicals are introduced into the system, as well as fine tuning the amount of chemicals added. This means that fewer chemicals are needed to take advantage of the natural biological process within the treatment plant, resulting in further cost savings.

The changes at the Wastewater Treatment Plant have created a better system performance which is more reliable. This ensures that Council can meet the NSW Environment Protection Authority’s discharge requirements and reduce costs from potential breakdowns. In addition, the changes have resulted in a reduction in the salinity of the treated water which is a benefitting customers using recycled water for irrigation and other non-potable uses.


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