How floating wetlands solved algal bloom for Bendigo
Location: Gateway Park, Kangaroo Flat, VIC
Customer: City of Greater Bendigo
Products: SPEL Floating Treatment Wetland
Gateway Park fills largely from stormwater run-off. As a result the water contains significant nutrients which have historically lead to algal blooms. This has resulted in some seasonal closures and signage around the site to protect the public from potential health risks.
AKS Industries worked with The City of Greater Bendigo and to install a new SPEL Floating Treatment Wetland at Kangaroo Flat’s Gateway Park to improve the lake’s water quality. This system has been coupled with a circulation pump system to ensure that the entire volume of the lake is treated through the root mass of the Floating Wetlands.
This Floating Treatment Wetland is a solution that has been developed across multiple applications from stormwater to wastewater treatment lagoons.
Using a concentrated wetland effect, floating wetlands’ root system provide a large treatment surface area allowing large lakes to be managed with a small system causing minimal aesthetic impact.
SPEL Floating Treatment wetlands require no civil works onsite, the system was constructed easily and deployed from the edge of the lake causing minimal disruption to the surrounding site, reduced environmental impact and limited downtime or restricted access.
Initially the system was installed with bird-netting to allows the plants to be protected as they establish root systems. After six months, the netting is removed and the plants and the system has flourished ever since.
According to the City of Greater Bendigo’s website, ‘Blue-green algae are first detected in the water at low amounts, possibly signalling the early stages of the development of a bloom. At these concentrations, the blue-green algae do not pose a threat to recreational, stock or domestic use.’
The Gateway Park project was huge success, the system has treated and maintained the algae count at a level that is safe for recreational, stock or domestic use.
This innovative and environmental treatment and circulation process has proven effective in substantially reducing nutrient levels and is now being rolled out across Asia-Pacific.