The Blackmans Bay Sewage Treatment Plant upgrade has reached a major milestone, with flows from the old plant now cut-over to the new facilities.

TasWater’s $50 Million upgrade includes the new Intermittent Decant Extended Aeration (IDEA) treatment process, which has the capacity to treat sewage from up to 40,000 households — nearly double what the old plant could manage.

TasWater CEO, Michael Brewster, said this increased capacity will meet the needs of the growing Kingborough community until 2040.

“We have also paid special attention to the management of odour at the new Blackmans Bay facility,” Mr Brewster said.  

“A bio-trickling filter odour control unit has been incorporated to minimise the impact on the community. Once we are fully commissioned, our neighbours shouldn’t even know we are there.”

Mr Brewster also stated that the Blackmans Bay upgrade represents a very significant investment in Tasmania’s sewage infrastructure.

“It demonstrates TasWater’s commitment to the economic and community development of Tasmania, with the expanded capacity enabling both residential and business growth in the Kingston area.”

“Importantly too, it will improve the quality of treated effluent discharged from the plant to protect the environment of coastal communities and the River Derwent,” Mr Brewster said.

Construction of new pump stations at Electrona and Margate are also in the final stages. A new 15km pipeline will connect these pump stations to Blackmans Bay, enabling the existing Electrona and Margate Sewage Treatment Plants to be closed and end the discharge of treated effluent into North West Bay.

“It is extremely satisfying to now have Blackmans Bay online, and I recognise the massive amount of work carried out by our local contractors and joint venture partners Acciona/BMD (BAJV),” Mr Brewster said.

The upgrade was first brought to the drawing board by the Kingborough Council back in 2008 and Mr Brewster said TasWater is pleased it is bringing the council’s original plan to fruition.

“I appreciate the support Kingborough Council has provided throughout this project, and thank the community and nearby residents for their patience during the construction period.

“I am confident the treatment plant upgrade will provide real benefits to the community and the environment,” he said.

Work will continue at the site until mid 2019 to complete the final commissioning process and decommission and repurpose, or remove the old facilities


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