South Hedland Wastewater Treatment Plant

Project Overview

Water Corporation and Tenix formed an alliance, the Pilbara Clearwater Alliance, to oversee the delivery of a number of water projects in the region. Ertech was contracted to the Alliance to deliver earthworks, concrete and pipelaying for the South Hedland plant and later for the Karratha Plant.

Prior to the commencement of the South Hedland Wastewater Treatment plant upgrade, recycled water was used in Port and South Hedland to irrigate the golf course, turf club and various town ovals. Upon completion, the upgraded plant has the capacity to produce 6 million litres of treated water for reuse per day, to be supplied for industrial processes, dust suppression, materials handling, and road construction.

Fast Facts

ClientPilbara Clearwater Alliance
LocationSouth Hedland, WA
Year of completion2013

Scope of works

Initial scope of works:

Clear and grub, general earthworks, excavation, and fill
Construct anaerobic ponds, including lining, riprap placement and associated pipework
Construct sludge drying beds, including detailed excavation and import of fill
Install lining in anaerobic ponds and sludge-drying beds
Install Algae Recycle Main pipework for the ponds
Construct a 6m wide V Drain and install DN600 reinforced concrete stormwater culvert, including headwalls and rock pitching
Landscaping and restoration of disturbed areas used for construction activities
Construct temporary access roads, site compounds, and storage areas

Additional scope awarded to Ertech:

Install underground pipework
Conduct hydrostatic testing of pressure lines
Install pipe and electrical/communications conduit inserts in the concrete slabs
Detailed excavation for the concrete bases from surface level
Pouring and finishing of concrete base and walls