Atlan BaffleBox®
Atlan BaffleBox® is a precast concrete GPT (Gross Pollutant Trap) containing a series of sediment settling chambers separated by baffles.
The primary function of the Atlan BaffleBox is to remove sediment, suspended particles, and associated pollutants from stormwater. Atlan BaffleBoxes may also contain trash screens or skimmers to capture larger materials, trash, and floatables.
The Atlan BaffleBox has proven effective in removing sediment from storm water runoff. It is mainly utilised in areas where sediment control is a primary concern, while other storm water Best Management Practices (BMPs) may be more effective in areas where additional storm water pollutants, such as dissolved nutrients, oil and grease, or metals, are prevalent.
Features & Benefits
Advanced Pollutant Capture
Separates and retains gross pollutants, sediment, and floatables to improve water quality.
Efficient Sediment Management
Designed with internal baffles and sediment zones to maximise pollutant retention and minimise resuspension.
Minimal Head Loss
Innovative floating weir design maintains only 350mm of head loss, even when the screen is fully blocked.
Handles Multiple Inflows
Accommodates diverse site configurations with the ability to manage multiple inflows seamlessly.
Durable Construction
Built with high-strength, long-lasting precast concrete or fibreglass designed to withstand harsh environmental conditions and heavy-duty applications.
Low Maintenance Requirements
Accessible design simplifies cleaning and maintenance, reducing operational costs.
Modular and Customisable Design
Configurable to specific new and retrofit site requirements, accommodating various flow rates and pollutant loads. Prefabricated components ensure quick and cost-effective installation with minimal disruption.
Atlan View Observation Cover
Designed to accommodate community stormwater education opportunities.
Enhanced Safety Features
Designed to prevent hazardous pollutant overflow during heavy rain events, protecting downstream ecosystems.
Manufactured in Australia
Locally fabricated in our Australian precast concrete production facilities to meet ISO9001 Quality Standards.
SQIDEP Test Treatment Efficiencies*
| POLLUTANT | EFFICIENCY |
|---|---|
| Total Suspended Solids (TSS) | 73% |
| Total Phosphorus (TP) | 59% |
| Total Nitrogen (TN) | 39% |
| Gross Pollutants (GP) | 99% |
| Other - Microplastics | 66% |
*Contact us to confirm approval performance for the project LGA.
Applications
- End of line treatment
- Carparks
- Residential developments
- Commercial developments
Atlan BaffleBox Resources
Atlan BaffleBox® FAQ
What is the Atlan BaffleBox®?
The Atlan BaffleBox is a SQIDEP-verified Gross Pollutant Trap (GPT) that uses a series of baffles and an internal cage to capture litter, plastic pollution, organic debris, and sediment.
The primary role of GPTs is to provide primary stormwater treatment by removing larger pollutants. They are often deployed in treatment trains with other secondary and tertiary treatment devices, such as AtlanFilter and Floating Treatment Wetlands.
How does the Atlan BaffleBox® work?
Stormwater flows through multiple chambers where internal baffles slow water velocity, allowing sediment and pollutants to settle out. Trash screens, internal cages and skimmers also improve the device’s capability to capture litter, debris, and floatables before they enter waterways.
What pollutants can the Atlan BaffleBox® remove?
The system is designed to remove sediment, suspended solids, gross pollutants, litter, floatables, microplastics, total nitrogen (TN), and total phosphorus (TP).
Is the Atlan BaffleBox® SQIDEP verified?
Yes. The Atlan BaffleBox® has been independently tested and verified under Stormwater Australia’s SQIDEP protocol, providing confidence in its pollutant removal performance.
Third party verified treatment efficiencies for Atlan BaffleBox include 99% Gross Pollutants (GP), 73% Total Suspended Solids (TSS), 59% Total Phosphorus (TP), 39% Total Nitrogen (TN), and 66% microplastics.
What treatment efficiencies has the Atlan BaffleBox® achieved?
SQIDEP verified treatment efficiencies for the Atlan BaffleBox® include:
- 99% Gross Pollutants (GP)
- 73% Total Suspended Solids (TSS)
- 59% Total Phosphorus (TP)
- 39% Total Nitrogen (TN)
- 66% microplastics
Where is the Atlan BaffleBox® typically used?
The BaffleBox® is commonly installed in car parks, residential developments, commercial developments, and end-of-line stormwater treatment applications where sediment control is a primary objective.
Common installation locations include:
- Parks and green spaces: To manage stormwater runoff from parks, reserves, and recreational areas, helping capture gross pollutants and sediment before discharge to adjacent creeks, lakes, wetlands, and other receiving waterways.
- Commercial and industrial developments: At the outlet of large paved areas, loading docks, warehouses, and hardstand areas where debris and sediment can accumulate.
- Residential subdivisions: Ideal for large-scale residential catchments to capture urban pollution prior to discharge to drainage, OSD assets, or receiving waterways.
- Council drainage networks: Used as retrofit assets in existing drainage systems to improve water quality without major infrastructure upgrades.
- Car parks and shopping centres: To intercept rubbish, organic matter, and sediment before runoff enters downstream pipes.
- Upstream of OSD tanks and retention systems: To reduce maintenance requirements on downstream water quantity assets by capturing gross pollutants before they enter the tank chamber.
- Outfalls to receiving waterways: Installed immediately upstream of rivers, creeks, lakes, wetlands, and coastal environments to capture stormwater pollution before discharge.
Is the Atlan BaffleBox® suitable for retrofit projects?
Yes. The modular design, trafficability, and compatibility with diversion chambers ensure the BaffleBox® ideal for retrofit applications and integration into existing drainage and stormwater infrastructure.
This makes it a practical option for upgrading stormwater treatment in established urban environments where space is constrained and constructing treatment assets, such as bioretention or sediment basins, may not be feasible.
What are the advantages of a BaffleBox® compared to traditional sediment basins?
The Atlan BaffleBox® offers a smaller footprint, reduced environmental disturbance, lower maintenance requirements, and easier installation compared to many conventional sediment treatment systems.
Unlike sediment basins, which require a large surface footprint, the BaffleBox is installed below ground within the stormwater drainage network, preserving valuable land for development or public use.
Does the Atlan BaffleBox® require regular maintenance?
Yes. The Atlan BaffleBox is designed for routine cleaning using standard vacuum trucks, with maintenance performed from the surface. Installations are accessible through the AtlanView cover system or manhole access points.
Routine inspections and cleaning are recommended to remove accumulated sediment, litter, and debris, ensuring the device continues to operate efficiently. Its accessible design simplifies maintenance activities.
Is the Atlan BaffleBox® compliant and easy to specify?
Yes. The Atlan BaffleBox® is SQIDEP verified, providing independently verified performance to support specification and regulatory approval processes. MUSIC nodes for the Atlan BaffleBox are also available to assist in designing, planning, and specifying the device on your projects.
Backed by comprehensive technical documentation and engineering support, it is easy for consultants, developers, and councils to specify as part of both new and retrofit stormwater treatment projects.