Kingborough Sewerage Treatment Plant Upgrade
About the project
Located just south of Hobart, BMD was engaged as part of a joint venture to design, construct and commission the plant which was at the end of its service life.
Scope
Construction of two intermittently decanted extended aeration (IDEA) and sequencing batch reactor (SBR) bioreactors
Primary, secondary and UV tertiary treatments
Repurposing and upgrading of existing plant for aerobic sludge digestion and new dewatering facilities
Construction of two new large network pump stations and upgrade of an existing large network pump station
Construction of 15 kilometres of sewerage pressure mains
Decommissioning of three underperforming sewage treatment plants made redundant due to the new works
Two years of operation and maintenance management
Outcome
The project introduced a unique wastewater treatment process, intermittently decanted extended aeration (IDEA), which combined with sequential batch reactor technology to provide a cost-efficient way of treating wastewater.
In addition, the wastewater was treated sustainably without any chemical dosing using ultraviolet disinfection instead of chlorine which promoted a safer environment for plant operators.
The multidisciplinary project team used careful staging to maintain operations of the plant eliminating disruptions throughout constructions.The new sewerage pressure mains ran through residential areas and a highly sensitive national park area, the Peter Murrel Reserve.
The project team successfully collaborated with both the client and national parks department to plan and stage the works to ensure they did not disrupt residents or adversely impact the environment during construction.