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Sand filters with HydroCon pipes feature in WSUD Award design
Kiama Council expressed extreme reluctance at the possibility of using constructed wetlands in the Elambra Estate development, and generally within their LGA. They were concerned about:
- Land take eating into developable land
- Public health and safety risks such as mosquitoes and drownings
- A lack of ability to understand, and therefore properly maintain wetland systems
Faced with these constraints, STORM proposed sand filters as viable alternatives and which addressed all of Council's concerns. Sand filters have much smaller land takes than wetlands when used in Water Sensitive Urban Designs.
Fundamental to the performance of these sand filters is the incorporation of HydroCon pipe technology from Germany. These pipes provide trapping of particulates, and ionic adsorption of nutrients and heavy metals, etc. within the permeable pipe matrix. They are designed for German regulations which are much more stringent than those in Australia, and so they provide high levels of treatment.
For more information on HydroCon pipes, visit www.hydrocon.com.au
For details of the performance of sand filters incorporating HydroCon Pipes, click to view technical details of the Kiama CBD project which will feature in the next Public Works Engineering Journal.
To contact HydroCon, click here
To contact STORM_CONSULTING, click here
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Construction of Kiama CBD Sand Filter, showing HydroCon pipes

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