BTS | HARDING PRIZE COMPETITION 2025


Above, figure 4: Proprietary sediment filter system SOURCE: GREEN RHINO, 2023


maintenance requirements to ensure continued


effectiveness (International Erosion Control Association Australasia, 2010). Another potential solution to remove silt from


wastewater can be seen in Figure 4. Such systems can also be used to target hydrocarbons and enable safe discharge to surface drains in construction projects. These are, again, quick to mobilise but require a pumping system to be available. They also require close monitoring to ensure that the filters are maintained.


Similar methodologies are used to create larger scale


systems for treatment purposes in construction projects, such as settlement tanks and/or treatment systems with specific concrete washout treatment units available, an example of which can be seen in Figure 5. These can address oils, suspended solids and pH imbalance. Generally, they are provided as mobile hire units and are used in series or parallel to achieve the required water treatment targets and volumes. These systems can have sensors installed to track maintenance and productivity,


Above, figure 5: Large mobile water treatment SOURCE: SILTBUSTER, 2024 18 | May 2025


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