Māngere Wastewater Treatment Plant - Asset Renewals

Our in-house mechanical team delivering these works has extensive experience in asset renewal, planned maintenance, and fabrication. They are using advanced techniques such as LiDAR scanning, 3D modeling, and the creation of digital shop drawings to reduce site work and save time compared with traditional methods.

Regularly recording site conditions using drone-captured photogrammetry data has also enabled better tracking and more accurate progress payment claims.

We're delivering a three to five-year Targeted Asset Renewal Programme (TARP) at Watercare's Māngere Wastewater Treatment Plant in Auckland, using digital technologies to save time and cost.

The team also updates the Piping and Instrumentation Diagram) (P & ID) drawings, collects data for asset capitalization, and uses Non-Destructive Testing (NDT) methods.

Thus far our team has refurbished:

• eight digesters
• 12 primary sedimentation tanks
• two gravity thickeners
• three dissolved air flotation systems
• a digester feedline
• various biofilters.

The refurbishment tasks encompass several key elements, including:

• replacing all existing pipework with 316 stainless steel piping
• upgrading valves to newer technology valves specifically designed for wastewater applications
• enhancing instrumentation and electrical cabling
• conducting concrete remediation using Sika and Sewercoat products
• implementing safety improvements for platforms and accessways.

The refurbishments are needed to ensure the continued uninterrupted treatment of wastewater as the region grows and volumes increase.