Frequently Asked Questions
Frequently Asked Questions
The Great Bubble Barrier
How does the Bubble Barrier work?
Is there a Bubble Barrier in use?
How is the plastic collected?
We are using a catchment system which is designed by TGBB to work in line with the Bubble Barrier. The catchment system is always adapted to work with the existing infrastructure of each project. However, the combination of our Bubble Barrier with other catchment systems is also possible.
What is the effect of the Bubble Barrier on fish?
Most species will just pass through the Bubble Barrier or take a short time before they pass it. We nevertheless implement a fish passage in each design, either under the catchment system or under the bubble tube itself. We will always carefully consider the ecological impact of each Bubble Barrier.
Whales use bubbles to hunt fish. Why does the Bubble Barrier not affect fish then?
Humpback whales use the so called “bubble-net feeding” method to concentrate herring near the water surface. The whales use air bubbles to blow a ring around the school of fish before they jointly breach the surface and feed on the fish. Research suggests that the main driver behind the concentration of the fish is the sound which the whales make when they blow the bubble ring. The bubbles will create a “wall of sound” which scares the fish away from it rather than being afraid of the bubbles themselves. Our Bubble Barrier is silent, thin and doesn’t come as a surprise.
How much plastic and which size of debris does a Bubble Barrier remove?
During the tests in the IJssel we looked at how these results translate in a river. We tested our Bubble Barrier at the IJssel in various weather conditions and came to the conclusion that it caught 86% of the (floating) test material.
We can catch plastics with a size of 1mm and bigger, like granulate and styrofoam. In the pilot at Wervershoof, we are investigating whether we can catch microplastics measuring 20 micrometers up to 500 micrometers (0,5 millimeters).
Is it possible to remove microplastics from water by using a Bubble Barrier?
Are all types of plastic caught by the Bubble Barrier?
During the tests at Deltares, different types of plastics were tested: from packages, water bottles, popped balloons, plastic bags, bottle caps and plastic grit. Most floating plastics and underwater plastics can be caught. Unfortunately, plastic that has sunk and rolls slowly over the bottom of a river is unlikely to be caught.
What is a Bubble Barrier made of?
Plastic Extraction & Use
What happens to the collected trash?
How much energy does a Bubble Barrier use?
Strategy & Team
What is the mission of The Great Bubble Barrier?
What is the vision of The Great Bubble Barrier?
Are there career opportunities at The Great Bubble Barrier?
We are proud of our growth, mentality and the impact that we can achieve. To get the rivers free from plastics again, we’re always in need of talented and motivated pioneers who can support this mission and want to change the world with their own hands. Are you already sparkling? View all opportunities and openings now. View all job openings here >>