Tonkin Consulting

Capelli Road Wastewater Pump Station

Leed Engineering for SA Water Corporation

Capelli Road Wastewater Pump Station

Leed Engineering for SA Water Corporation

Capelli Road Wastewater Pump Station

The original Capelli Road wastewater pump station had sustained extensive hydrogen sulphide damage rendering the wet well and building structurally unsound. This project consisted of replacement with a complete new structure and mechanical elements, designed to allow continued operation of the existing pump station during construction and commissioning.

A major pump station in Adelaide’s north-western suburbs, this asset receives flow from 9 smaller pump stations and services a population of around 40,000. It discharges wastewater to the Bolivar trunk main, approximately 1.2km east of the site. SA Water (asset owner) engaged Leed for this project through a design and construct contract.

Tonkin Consulting were engaged by Leed as designer for this project. This scope included site civil works, stormwater, structural details, gravity sewer, rising main and mechanical design. Technical advice for managing contaminated soils, hydraulic design, operating philosophy and managing septicity was also provided by Tonkin Consulting

Technical Details

The new pump station wet well is a 9m deep, 6m diameter structure. Instead of the conventional secant piling construction method, a segmental shaft technique was developed as a more cost efficient solution.

The design flow rate of the new pump station is 450L/s using a three pump duty, assist, standby arrangement. Hydraulic design required maintaining relatively low pumping head in order to protect the original rising main system.

Site levels and earthworks were designed to minimise the volume of spoil removed from site.

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