Whareroa Water Treatment Plant – Wet Well Water Intake Taranaki (2016)
To provide a reliable source of water intake for a new water treatment plant providing up to 1200 m3/hr to a major dairy factory site.
The system needed to be a cost effective, reliable and robust system to extract water, in line with the consent conditions and with minimal environmental impact.
We began by driving a 14m deep vertical shaft using segmental concrete rings with stainless steel splice plates. We then bored a horizontal shaft to a stainless steel intake structure within the river bed.
Two suction pumps, each weighing two tonnes, were then installed and connected to booster pumps in the nearby lift station. NDA Site Services provided all mechanical services and commissioning support to completion.
We minimised the environmental impact by driving the shaft without mass excavations, then installing stainless steel suction riser pipes and connections to the booster pump station.