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    Kingborough Sewerage Upgrade

    ACCIONA and BMD were selected by TasWater as the preferred bidder for the design and construction to the existing Blacksman Bay Sewage Treatment Plant which is valued at A$39M.

    The existing sewage treatment plant has been operating for 30 years and was at its end of its service life. An upgrade was needed in order to accommodate the future growth in Kingborough. This upgrade has increased capacity from 4.1 Million Litres per Day to 8.5 Million Litres per Day.

    The upgrade to the sewage plant has included construction to earth works, new roadways, new buildings and new tanks as well as equipment installation and commissioning. An Environmental Management Plan was required before construction in order to evaluate site management, erosion control, air quality, flora and fauna, noise management, and traffic management.

    GENERAL INFORMATION

    • Location: Kingborough, Tasmania

    • Our role: Introducing a wastewater treatment process called Intermittently Decanted Extended Aeration (IDEA), which is combined with Sequential Batch Reactor (SBR) technology in order to provide a cost efficient way of treating wastewater.

    • Infrastructure: Kingborough Sewerage System

    • Project Value: A$39M

    • Estimated completion date: 21 months to design and construct

    • Maintenance Period: 24 months of performance evaluation

    KEY FEATURES

    ACCIONA and BMD were the delivery contractors for the project with design and construction to the upgrade of the existing Blackmans Bay Sewage Treatment Plant.

    • Increase of treatment capacity to 8.5 Million Litres per Day

    • Construction of a new sewage pipeline to take waste from Margate, Electrona and Howden to the Blackmans Bay Sewage Treatment Plant

       

     

    BENEFITS

    • The Kingborough Sewerage project was upgraded using a wastewater treatment process called Intermittently Decanted Extended Aeration (IDEA), which is combined with Sequential Batch Reactor (SBR) technology in order to provide a cost efficient way of treating wastewater

    • Closure of 3 existing and underperforming sewage plants at Electrona, Margate, and North West Bay Golf Club

    • One of the sustainable components of this project was to treat the wastewater without any chemical dosing, utilising Ultra Violet disinfection instead of chlorine. This helped to promote a safe environment for the plant operators and reducing any impacts on the environment

    • This upgrade improves the pre-existing odour issues at Blackmans Bay and Dru Point (Margate)

    • The construction of the new pipeline known as the Blue pipeline route were considered on community views, environmental consideration, engineering considerations, and lastly on cost and operational efficiency

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