Ultrasound Technology: The Breakthrough Behind the Recovery of Laguna Lo Méndez
I have been following the changes at Laguna Lo Méndez in Concepción as the lagoon recovers from a period of environmental decline. Ultrasonic algae control technology, implemented by Biotech in collaboration with SonicPure, has played a central role in improving water quality and supporting a more balanced, healthier urban lagoon ecosystem.
Laguna Lo Méndez and the Start of Its Recovery
I have been watching what has happened at Laguna Lo Méndez in Concepción over the past year, and the change has been hard to miss. Much of that recovery is tied to the introduction of ultrasonic algae control technology. The system, implemented by Biotech in collaboration with SonicPure, has played a central role in stabilizing one of the city’s most affected urban lagoons and restoring basic water quality.
From Ecological Crisis to a Manageable System
Just over a year ago, the lagoon was in serious trouble. Thick layers of cyanobacteria covered the water surface, producing strong odors, blocking sunlight, and reducing oxygen levels. Fish and coypus were dying, water quality declined rapidly, and the lagoon became a concern for residents and municipal authorities. It was no longer a usable or healthy public space.
The underlying cause was nutrient pollution. Nitrogen and phosphorus from urban runoff, fertilizers, stormwater, and occasional sewage leaks accumulated in the lagoon over time. These conditions created an environment where algae could grow quickly and repeatedly, making the problem difficult to control once blooms were established.
How Ultrasonic Algae Control Works
The ultrasonic system installed at Laguna Lo Méndez emits controlled sound waves that continuously propagate through the water. These sound waves are safe for people, pets, birds, fish, and other aquatic life, and the system runs silently, causing no visible disturbance at the surface.
Algae rely on internal gas-filled structures that keep them buoyant and allow them to reach sunlight. The ultrasonic waves interfere with those structures. When that happens, the algae lose buoyancy, sink deeper into the water, and are no longer able to photosynthesize effectively. Over time, the algae die off naturally, preventing new blooms from forming. This process does not involve chemicals, mechanical removal, or ongoing manual intervention.
Scientific Support and Municipal Involvement
Ultrasound was not selected in isolation. It was recommended as part of a broader restoration strategy supported by academic research and implemented with municipal backing. Studies conducted by the Catholic University and Universidad Santo Tomás identified ultrasonic control as a key tool for addressing recurring cyanobacteria blooms.
The Municipality of Concepción combined this approach with efforts to reduce nutrient inputs and restore surrounding wetlands. The ultrasonic system provides continuous, round-the-clock operation, helping prevent blooms from re-establishing and supporting the longer-term restoration work underway around the lagoon.
A Shift Toward Sustainable Water Management
What stands out to me is how ultrasound represents a shift away from chemical-based, short-term fixes. This technology is already used in many parts of the world to manage algae in urban lagoons, reservoirs, lakes, recreational waters, and industrial or agricultural basins. Laguna Lo Méndez has become a strong local example of how these systems can be applied in an urban setting without disrupting the surrounding environment.
The Role of the Community
While the ultrasonic system limits algae growth, the long-term health of the lagoon still depends on how the surrounding area is treated. Community behavior matters. Actions like feeding ducks, dumping waste into storm drains, or contributing to nutrient runoff can undermine restoration efforts. Protecting the lagoon requires both technology and ongoing public awareness.
Looking Ahead at Laguna Lo Méndez
What I see now at Laguna Lo Méndez feels like the beginning of a new phase. The water is cleaner, wildlife activity has returned, and the ecosystem is more stable than it has been in years. The ultrasonic system has demonstrated that long-standing environmental challenges can be addressed in a practical, safe, and sustainable way, without relying on aggressive or temporary measures.
.svg){kind=small}