High Efficiency Sediment Basin dosing systems and engineering support

An HES basin is a construction-site sediment basin that is dosed with a chemical treatment so fine suspended solids settle faster than they would by gravity alone. The dosing is controlled at the inlet so the basin can be managed as a treatment system rather than a passive pond.

It is used on earthworks and civil sites where runoff carries fine sediment that does not settle readily, where basin footprint is limited, or where discharge has to meet site conditions. Your design engineer and approval conditions determine whether it is required.

Trailer-mounted and IBC-mounted dosing stations, proprietary bespoke HES formulations alongside standard market options (aluminium-based, organic-based, combination and others), non-hazardous liquid pH adjustment, testing, jar testing, calibration and recovery, plus in-house RPEQ support for certification and for optimising site operations and basin performance.

No. We offer proprietary bespoke HES formulations, including CLEARFLOW GO™, alongside standard market options. Selection comes from jar testing on your water and your site needs, and a standard option is the right answer on some sites.

Jar testing compares treatment options on a sample of your site water so the chemical choice is based on how that water behaves. Calibration then sets the dosing station to suit the basin inflow and chemistry, and is revisited as site conditions change.

Coagulants work best within a pH window. Critical Elixirs offers a non-hazardous liquid pH adjustment product intended to reduce coagulant demand while still meeting compliance requirements. The right dose is confirmed against your site water.

We support suitable projects throughout Australia, subject to project scope, site access, programme and mobilisation logistics.

Trailer-mounted stations suit sites that need a self-contained unit that can be relocated as the works move. IBC-mounted stations suit compact set-ups where chemical is held in an IBC. We confirm the configuration against your basin layout and access during scoping.

The guide library covers dosing-system setup, jar testing, pH adjustment, calibration and monitoring, and site optimisation. Each guide is general information with sources listed; project approvals, design documents and engineering advice govern your site.

Send the project details through the Critical Elixirs contact page: location, basin arrangement, programme and any approval conditions. The team can scope the next step with you; sampling and jar testing may be part of that process.

Compare representative jar-test results, dosing station suitability, chemical supply arrangements, mobilisation availability and ongoing calibration support. Ask who reviews performance and who is responsible for operation and release decisions. Critical Elixirs combines trailer or IBC dosing stations, standard and bespoke chemistry, testing and in-house RPEQ support; the programme and availability are confirmed for your project.

Provide the basin and catchment drawings, design flows, erosion and sediment control plan, approval conditions and available water data. Define the chemistry, dosing, monitoring and engineering review interfaces before specifying equipment. Agree any RPEQ certification scope explicitly; treatment support is not automatic approval of the entire basin design.

Yes. We support suitable projects throughout Australia, subject to scope, access, programme and mobilisation logistics. Applicable project approvals and local requirements govern; Queensland guidance should not be assumed to replace requirements in another state.

No. Appearance is not a release criterion. Verify the parameters and sampling required by the project approvals and operating plan, which may include turbidity, pH and other conditions. A successful jar test or installed dosing station does not by itself authorise discharge.

Yes, suitable projects can be scoped in South East Queensland (SEQ), the Sunshine Coast, Gympie, Gladstone, Rockhampton, Mackay, Townsville and Cairns. Support can include site-water jar testing, chemistry selection, dosing stations, calibration and in-house RPEQ input. Confirm site access, sampling, delivery and mobilisation availability for your programme; service coverage does not imply a local office in each location.

Yes. Critical Elixirs can scope HES basin chemistry, dosing equipment, testing and calibration for suitable NSW projects. Supply the design drawings, water data, project conditions and programme so mobilisation and engineering requirements can be agreed. NSW project approvals and applicable requirements govern; Queensland guidance and RPEQ input do not automatically authorise a NSW design or discharge.