The Watercare Service’s Pukekohe wastewater treatment plant was successfully completed in New Zealand.
Watercare engaged McConnell Dowell and HEB Construction to upgrade the treatment plant in order to support population growth in Franklin and improve water quality into the Waikato River.
The additional reactor and activated sludge treatment technology provides more capacity and improves downstream water quality.
Construction began in 2019 across two separate portions with portion A involving construction of inlet works, activated sludge reactor, membrane bio reactors and interconnection pipework and electrical works.
Portion B focused on decommissioning the old system including two SBR tanks and converting them into new continuous flow ASR tanks.
The team construction 4,120 metres of underground pipework and 7,820 metres of stainless steel pipework above ground, across the whole project.
The new technology improved water quality in the Parker Lane Stream and the Waikato River, a key driver for Watercare.
The project was delivered on time and within budget, despite the challenges of COVID-19
Watch the project wrap-up below.
Subscribe to Trenchless Australasia for the latest project and industry news.