Bondi Wastewater Treatment Plant

by | Jun 11, 2024

The Bondi Wastewater Treatment Plant is a complex, historically significant piece of infrastructure featuring both underground and aboveground components, including various tunnels and sewage plants that have been part of Sydney’s network for 150 years. The client needed a comprehensive understanding of the facility’s condition to conduct targeted maintenance effectively.

The primary objective was to produce an accurate, navigable 3D model of the plant, integrating existing point cloud datasets with newly captured data. This model aimed to enhance the understanding of the facility’s current state, track deterioration, and support remediation and risk management planning.

Project Requirements

To improve the management and documentation of the plant’s condition, the client required a detailed 3D model with the following key requirements:

  • Integration of existing point cloud data into a unified model
  • Detailed attention to tunnel sections, including accurate identification, mapping, and cataloguing of defects
  • A secure, online platform for easy navigation and collaboration among multiple stakeholders
  • Utilisation of various capture technologies to address the site’s complex structure, ensuring completeness and accuracy.

Our Approach and Solutions

To meet these requirements and navigate the challenges of this unique site, including confined spaces and unpleasant odors, the team adopted a tailored approach combining laser scanning, photogrammetry, and specialised tunnel-scanning technologies.

Key solutions included:

  • Importing and evaluating existing point cloud data to assess its usability
  • Utilising the Dibit Tunnel Scanning system for detailed capture of tunnel sections
  • Employing terrestrial and handheld laser scanning for accessible areas, and high-resolution UAV surveys featuring both LiDAR and imaging devices for external areas, including the cliff face
  • Using Dibit 8 software for tunnel defect analysis and our visualisation platform for site navigation and data sharing across multiple divisions.

The team also designed specialised backpacks to capture data from multiple imaging devices simultaneously and utilised a remote-controlled car with mounted imaging equipment to capture some of the more difficult parts of the plant.

Outcomes and Key Achievements

Through precise planning, deployment of advanced technologies, innovative techniques and ensuring deliverables met specialised requirements, the team provided high-quality results that exceeded the client’s expectations by:

  • Providing a complete, unprecedented virtual view of the plant’s condition, enabling more effective decision-making and risk management
  • Facilitating the detection and documentation of previously untracked defects, aiding in remedial planning
  • Providing a secure, collaborative 3D virtual platform for stakeholders, improving communication and project management efficiencies.

A key achievement was the successful integration of diverse data capture technologies and existing datasets into a cohesive, easily navigable 3D model. This model not only serves immediate operational needs but also lays the foundation for ongoing monitoring and management of the WWTP’s infrastructure. Through innovative solutions, we have set a new standard for reality capture projects in complex, hard-to-access, GPS-denied industrial environments.

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