Bega urban wetlands receive the majority of the town's stormwater with a catchment over 60 hectares in size. The urban wetland also becomes a flood plain flow path annabranch rising up 7 metres in height. The Aqua Biofilter™ demonstrated it's high quality construction, rising and falling with the 7m flood, with it's anchor performing well, and plants growing vigourously with the high pollutant loads being delivered to the wetland.

The Bega Urban Wetlands case study can be downloaded as a pdf document, that was published at the National Australian Stormwater Conference 2009 uptakes of iron metals readily at 42,000 mg/kg. Uptake of manganese readily at 7,700 mg/kg, by some carex varieties that readily take up metals via phytoremediation process into rootzone.

Professor Li hosted the Australian delegation on Floating Treatment Wetlands in China, April 2007. The images below give an indication of the scale of some of the trial sites. The Floating Treatment Wetland is an On Site Sewage Management approach, intregrating stormwater treatment additionally. Large Constructed wetland with weirs separates the Floating Treatment Wetland, treating all sewage and stormwater before discharge to river, whereby water is accessed for re-use.

Large urban development in China utiising Floating Treatment Wetland & Biodigestor for water and waste processing. City precinct district energy & heat production

Pictured above is Prof Li left, ZERI Scientist www.zeri.org
and IOBB China Representative. Thomas Duncan on the right.

Advanced Biofiltration Research and Technology development has been an emerging science in China for many years with scientists from the Chinese Academy of Sciences and UNFAO affiliated FFC. Prof Li, Prof Song, Prof Pu and Prof Ou have all contributed to the science underpinning the development of the Aqua BioFilter™

The Floating Treatment Wetlands in China provided an opportunity for innovation, recyling nutrients and biomass energy. A biodigester was designed and built by Prof Ou. The biomass harvested regulary from the FTWs is inputtted to the biodigestor, where biogas fuel is produced for energy applications. Local organic wastes are also inputted to the biodigestor, genertaing additional biogas for energy applications. The cycling of nutrient dense waste water, and stormwater, with the addition of local organic wastes for biogas energy applications, demonstrates the effectiveness of the zero emissions approach.