Pukekohe Wastewater Treatment Plant Upgrade

Fulton Hogan carried out a $39 million upgrade to the Pukekohe Wastewater Treatment Plant to prepare for future population growth.

The project involved constructing three new pump stations and laying a new 8 kilometre wastewater pipeline that would discharge into the existing treatment plant. Most of the pipeline needed to be installed within busy roads, including a 3 kilometre stretch where there was restricted work space and no residential detour available. We worked closely with the surrounding community to ensure minimum disruption to businesses and residents.

To overcome the natural static head on the new pipeline as it approached the treatment plant, we installed a series of pinch valves. These valves increase and decrease in area and are aligned with pump speeds at the new station to ensure lower velocity flows to the plant.

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LOCATION Pukekohe CLIENT Watercare Services VALUE NZ$39m START April 2016 END December 2017 CAPABILITY Water, Construction

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