A $16.2 million upgrade in 2018 enhanced the Leanyer Sanderson waste stabilisation ponds facility with a new inlet works system, wastewater screen, grit removal system and odour control solution.
Aquatec’s recirculating biotrickling technology reduces emissions and odours for air quality improvement.
We worked with BMD Group to design, supply, install and commission the inlet work covers, foul air collection system, biotrickling filter (BTF) and Activated Carbon Unit (ACU) to meet the plant’s unique needs.
Aquatec’s exclusive recirculating BTF technology perfectly suited the predominately residential make-up influent received at the inlet works, which averages a hydrogen sulphide (H2S) loading of 100ppm. The system gets its name by continuously recirculating liquor through the biofilter, where naturally occurring microorganisms actively decompose contaminants like H2S and volatile organic compounds (VOCs).
After the primary biological treatment, the 9,800 m3/hr of air flows through a secondary polishing ACU stage. The ACU uses a blend of virgin and impregnated carbon media. Operating since 2018, the system has continued to meet its removal guarantees. The ACU is still using its first charge of carbon media, meaning that the BTF alone predominantly removes the H2S from the air stream.
This process efficiently minimises odour and reduces the release of potentially hazardous compounds, improving air quality and ensuring regulatory compliance.
“I have been very happy with the odour control unit at the Leanyer Sanderson Waste Stabilisation Ponds. The unit is very effective and efficient in its operation and has not given any issues since installed. During commissioning of the unit we had some minor issue, but Aquatec where helpful in providing technical assistance and support to rectify these issues. Aquatec have also assisted us with technical advice and training with other odour control units we operate in the Darwin sewer system.”
— Danny Browne, Senior Technical Coordinator, Water Operations – Power and Water Corporation
From installation to operator training: Aquatec’s end-to-end business model for optimal system performance
In addition to designing, supplying, installing, and commissioning the biotrickling system, Aquatec supported the plant owner’s (Power and Water Corporation) operators with training and further plant improvement system modifications. The training covered:
- system operation
- routine maintenance
- troubleshooting techniques to ensure optimal performance.
Maximising efficiency and sustainability through ongoing collaboration
We continue to support the plant with regular system evaluations and modifications, making improvements to accommodate evolving needs and to maximise efficiency. Our collaborative model enabled Power and Water Corporation to elevate its air treatment standards, strengthening its commitment to environmental stewardship.
The success of this system demonstrates the overall value and efficiency of biological odour control solutions, which both reduce operational costs while maintaining robust performance with minimal maintenance and Aquatec’s ongoing collaborative relationship supporting the local operators.
