Product Spotlight: Wastewater - July 2020

Product Spotlight: Wastewater - July 2020

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Reducing algae growth in wastewater effluent from lagoons is important to maintaining good environmental water quality. The MPC Buoy from LG Sonic combats the issue by combining online water-quality monitoring, web-based software and ultrasound technology to provide state-of-the-art treatment designed to eliminate up to 90% of the algae and cyanobacteria in lagoons, lakes, dams and water reservoirs.

Wastewater lagoons especially can suffer from severe algal blooms in the warmer seasons. Because of high water temperatures and nutrient levels, algae can reproduce quickly. Biologists at LG Sonic knew that ultrasound is an effective method to control algae. But they learned that the ultrasonic treatment needs to be adjusted according to the type of algae and other parameters in the water in order to perform at its highest efficiency.

The buoy is a floating, solar-powered system that combines real-time water-quality monitoring and ultrasonic sound waves. It helps prevent the growth of new algae while also reducing BOD, TSS and chemical usage. The device exerts control in areas up to 1,600 feet in diameter. Every 10 minutes essential parameters are monitored. The monitored data is then automatically transferred to a web-based software.

“We receive real-time water-quality data to verify the current status of the lakes of our customers,” says Lisa Brand, a microbiologist with LG Sonic. “Based on our developed algorithm, we modify the ultrasonic program to the specific algae type that is present in the water.”

The buoy provides a complete overview of water quality by collecting data on chlorophyll, blue-green algae, pH, turbidity, dissolved oxygen and temperature every 10 minutes. The collected data is delivered in real time via radio, general packet radio service or 3G to web-based software. The ultrasonic transmitters are activated and optimized based on the received information.

“Once a specific program is set to target the algae, four ultrasonic transmitters will ensure complete coverage of a designated area,” Brand says. “Our customers can visually follow the water quality and progress of the ultrasonic treatment.”

The ultrasound creates a sound layer in the top sector of the water, keeping algae from rising to the surface to get sunlight. The algae then sinks to the bottom, where it is degraded by bacteria. 833-547-6642;


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