Ground Water Treatment - New Zealand

The Challenge           

City Rail Link is the largest infrastructure project ever undertaken in New Zealand and includes construction of twin 3.45 km rail tunnels up to 42 m under the Auckland CBD. 

Aquatic Engineering was engaged to design and construct a water treatment plant (WTP) for the Mercury Lane site, treating ground and construction water for discharge to stormwater. The WTP had it be designed to fit under a mezzanine and around columns of the site acoustic shed.

Due to the Covid19 pandemic, the WTP also had to be installed and commissioned without Aquatic Engineering personnel being able to travel to New Zealand.

Our Solution

Aquatic Engineering’s engineers created a bespoke WTP featuring upfront solids removal, pH correction, clarification, filtration and discharge monitoring.  Our containerized units allowed for modules to be stacked and locked together, meeting the clients tight space requirements.

The WTP was fully assembled, FAT completed and clean water commissioned in Sydney, before being disassembled for transport to New Zealand.

Comprehensive installation documentation and remote assistance, allowed for the successful re-assembly and commissioning.