20 Nov 2024
Sewage treatment upgrade has Legana residents breathing easy
Legana residents are enjoying fresher air and improved services after TasWater implemented upgrades to their local sewage treatment plant.
TasWater recently installed new, innovative aerators which have improved treatment and reduced odours, enhancing the quality of life for the growing community.
Head of Operational Support and Improvement Anthony Allan said a surge in Legana’s population in recent years had put some pressure on the treatment plant.
“As the town’s population has grown, so have demands on the Legana Sewage Treatment Plant, which has faced operational challenges and odour complaints,” Mr Allan said.
The new aerators, which were also installed at Bridport last year, offer enhanced performance by mechanically infusing wastewater with oxygen — a critical step for breaking down organic material and keeping odour in check.
"The results at Bridport were impressive,” Mr Allan said.
“The aerators not only improved effluent quality, but also virtually eliminated odour issues.
"Legana’s population is expected to continue to increase over the next decade and these upgrades will help us manage that future growth."
By adding oxygen directly to the wastewater, the aerators support the lagoon system’s natural biological processes, which in turn reduce the need for costly chemicals.
"Switching to aerators has streamlined operations and enhanced safety for our team," Mr Allan said.
“It’s also a better outcome for the environment and the community.”
The new system was installed between August and September and was commissioned in early October.
While additional monitoring instruments are still being phased in, initial results have been promising, with improved oxygen levels in the plant’s primary lagoon and no complaints of odour since the upgrade.
TasWater is investing $1.9 billion in its network over the next five years to ensure it can continue to deliver exceptional water and sewerage services for a thriving Tasmania.