EnviroSonic was installed in the Candowie Reservoir South East Gippsland, Victoria, in October 2014
The reservoir, for potable water supply, is about 1000 meters in length, and is serviced by five EnviroSonic ES300 DC units, with four mounted on two pontoons strategically located in the reservoir to give optimum coverage of ultrasonic waves. The picture below is a double installation, with each transponder facing 180 degrees from the other. They have separate back up power supply and operate independently.
The results have been most pleasing, with current algal counts showing a reduction of around 75% from the date of installation, despite having incurred warmer summer temperatures. Nearby waterways have experienced algal outbreaks. Specific results are available.
A long narrow reservoir for water supply to the local community, this reservoir has experienced many blue-green algae outbreaks. We installed three ES300 units to cover the irregular shape. This photo is of the installation process, with the location of the pictured unit moved two hundred meters further away. There has been no outbreak of blue green algae since early 2014.
There was some initial concern about the effect the ultrasound might have on the resident platypus population, but it is now confirmed that many more platypus sightings are being recorded after the installation.
This EnviroSonic installation – units across multiple generating sites and in other plant areas – in early 2012 resulted in a sharp reduction in algae and biofilm growth from water received from a local river. This allowed a significant drop in chemical use, ensuing very positive environmental benefits and large cost savings to the company.
A testimonial follows from Contact Energy, together with a before and after analysis of water quality.
These documents clearly show the excellent long term results achieved by our ultrasound in keeping algal levels at extremely low levels.