The plant was one of the most sophisticated treatment facilities at the time of opening.
As part of a Design Build consortium, CH2M Beca won the contract to build the new $100 million water supply to Auckland for Watercare Services Ltd. Not only was CH2M Beca the sole designer for the project, but our team also provided construction support, commissioning/testing and operational support for a period of two years following completion.
The contract involved the construction of the river intake, raw water pump station/pipeline, advanced water treatment plant, 3 MW highlift pump station and a 37 km pipeline sized to deliver 150,000 m3/day of treated water from the Waikato River. Treatment capacity was staged to optimise CAPEX and take advantages of advances in technology.
- A high level of public health protection is provided for using Zeeweed® membrane ultrafiltration technology as the core treatment process
- High rate 'superpulsator' clarifiers reduce the solids loading on the membrane plant
- GAC adsorbers further polish the treated water
- Dedicated chlorine contact tanks ensure virus inactivation
- Lime and CO2 are added to reduce corrosivity
- Onsite hypochlorite generators improve safety and reduce operational costs
- The advanced control system enables the plant to be monitored and controlled from Watercare's central control room via a fibre-optic and microwave link.
Watercare takes great pride in their facility, which on completion, was one of the most sophisticated treatment facilities and the most significant water supply project.