LG Sonic

Algae control in Auckland Dam - Case Study

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Courtesy of LG Sonic

Five solar-powered algae control systems where installed in the Lower Nihotupu Dam in Auckland, New Zealand to reduce the levels of blue-green algae. The project started in December 2016 and so far, the project appeared to be of great success with the blue-green algae count over summer 90 per cent less than the previous year.

The Challenge: Reduce Blue-green Algae Count

The main objective for this project was to reduce the blue-green algae counts in the dam used as water supply. When blooming in the summer, the blue-green algae increases the process costs of the water, or even making the water unusable. A reduction in blue-green algae would also allow for savings in the use of (expensive) chemicals.

The Solution: Ultrasonic Sound Waves

Ultrasound technology combined with real-time water quality monitoring provides a cost-effective solution to control algal blooms. The ultrasonic sound waves provide a long-term solution for a healthy ecosystem and are proven to be safe for humans, plants and other aquatic life.

The Results: 90% Reduction in Blue-green Algae

Since the installation in December 2016 the project appeared to be of great success. The blue-green algae count proved to be 90% lower during the summer compared to the previous year. The real-time water quality data predicts new algal blooms allowing them to be controlled before they become a problem.

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