Ravenshoe Wastewater Treatment Plant

Scope

The scope of work included:

• earthworks
• construction of a new access road
• construction of an intermittently decanted extended aeration (IDEA) tank
• installation of all underground pipework
• refurbishment of the inlet works structures and primary settlement tank
• procurement and installation of wastewater treatment and all associated equipment
• erection of all structures, platforms and walkways
• installation of fencing
• installation, testing and commissioning of the new plant
• provision of operator training
• 12 months process operational support.

Outcomes

The bioreactor, chlorine contact tank and aerobic digesters were all incorporated into one concrete tank. This allowed for a reduced project footprint and existing infrastructure to be repurposed as part of the upgrade works, reducing overall costs for the client.

The plant was designed to be monitored and accessed remotely, resulting in no requirement for anticipated operations or maintenance activities within confined spaces or hazardous gas areas.

The project was successfully completed during the wet season, with all infrastructure designed to sit above flood water levels to ensure the ongoing operations of the plant could continue. Despite high rainfall events, the project team met all performance requirements and was delivered on time, with the upgraded plant’s capacity now able to cater for the growing region.