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We pioneered the concept of “Dry Rubbish,” which is the separation of rubbish from the water flow, preventing toxic fermentation. When the variety of pollutants, including both organic & man made, are constantly exposed to a body of water they begin to breakdown. The end result is a toxic cocktail of chemical additives from paper & plastic manufacture, tobacco products etc, mixed with a base of organic compounds. This bi-product can be a more significant pollutant that the individual components from where they came. It typically gives off an offensive odour (anaerobic breakdown) as well as releasing nitrogen and phosphorous into the waterway.
With the Dry Rubbish system the debris is exposed to the water cycle for a minimum period of time, preventing a further degradation of the water body. This ensures an enhanced quality that has desirable effects on subsequent uses and the environment.
After abatement of the flow, pollutant loads drain dry and the litter load settles into a semi compacted mass on/in a containment bay. With the absence of liquid within the mass, degradation is minimized to a "natural surface" time span as in a domestic compost load. The absence of water also minimizes pest infestation and odour.
Nutrients, such as contained in animal faces, are adsorbed into the litter load allowing the natural breakdown to take place through exposure to the sun and ultraviolet radiation. The silt, oils and fines contained in normal storm-water flows are also captured within the litter load with suspended pollutants, such as plastic bottles and other buoyant materials, acting as a secondary filter.
A percentage of previously dissolved matter contained within the inlet flow will escape through the vane apertures. This can be treated in the next step in the Treatment Train, if desired, using other filtration methods further downstream. For example chemical applications or wetlands or bio-rention basins. The absence of solid pollutants will extend the maintenance life of such measures.
The dry load is convenient to handle. There is virtually no danger to public or maintenance persons with the provision of normal Work Cover rules. The dry load is also easy to monitor for content, and remedial action may be taken by council for rectification. The load may also be disposed of as “normal” garbage classification. Recycling is also an option according to load content.
So to summarise the benefits of DRY Rubbish include: