Snell’s Beach Wastewater Treatment Plant (WWTP)

Project Overview

The project involved the desludging and mechanical dewatering of biosolids from four aerated lagoons at the Snell’s Beach Wastewater Treatment Plant. The objective was to restore lagoon capacity, improve treatment performance, and ensure compliant and efficient handling of biosolids.

Scope of Works

1. Desludging of Four Aerated Lagoons
   • Mobilisation of desludging equipment and associated support systems.
   • Removal of accumulated sludge from each aerated lagoon while maintaining operational continuity of the treatment plant.
   • Ensuring minimal disruption to aeration systems and overall biological processes.
2. Mechanical Dewatering via Centrifuge
   • Pumping of lagoon sludge to an onsite centrifuge unit.
   • Conditioning and dewatering of sludge to achieve target solids concentration.
   • Monitoring of throughput, performance, and dryness of produced cake.
3. Transport and Disposal of Dewatered Biosolids
   • Handling and transfer of dewatered biosolids into transport containers.
   • Compliance with all regulatory and environmental requirements for biosolids transport.
   • Disposal of biosolids at an approved landfill facility.

Project Outcomes

• Successful desludging of all four aerated lagoons.
• Achieved consistent and efficient dewatering through centrifuge processing.
• Dewatered biosolids were safely transported and disposed of at landfill.
• Restored lagoon depth and operational performance for continued treatment efficiency.