CLEAR RIVERS Litter Traps collect marine litter in rivers and ports and recycles the recovered plastic into durable new products.
TARGET USERS: Government
KEY CONSIDERATIONS: CLEAR RIVERS Litter Traps apply a passive entrapment system which takes advantage of natural forces such as water currents and wind to capture the plastic, requiring no energy to function and respecting the environment and animal lives.
MORE INFORMATION: https://www.clearrivers.eu/
It is estimated that between 80-95% of plastics in the ocean ends up there via rivers. Plastic pollutes our seas and oceans and has a direct and deadly effect on marine life. Untold numbers of birds, seals, turtles, whales and other marine animals are killed every year after ingesting plastic or getting strangled in it. With the plastics breaking down into smaller particles, plastics are also entering the human food chain.
CLEAR RIVERS retrieves marine litter in rivers and ports with Litter Traps and recycles the recovered plastic into durable new products. The Litter Trap is a passive and cost-effective device that stops the diffusion of plastic litter in waterways at its source, retrieving the plastic from rivers and canals before it could enter seas and oceans. The Litter Trap applies a passive entrapment system which takes advantage of natural forces such as water currents and wind to capture the plastic, requiring no energy to function and respecting the environment and animal lives.
Functioning: The Litter Trap is placed in the opposite direction of the water current. Plastic debris are carried towards the opening of the Litter Trap by the current and the wind and it does not require energy of human labor to function. Once the litter is trapped inside, will not be able to “escape” even if the current changes direction, thanks to an innovative semi-closed-door system. CLEAR RIVERS’s devices are open in order to create easy escape routes for fish and other animals, birds can also fly through the open part of the Trap. This is a great way to retrieve plastic litter without obstructing the pathways of aquatic organisms. The Litter Trap is made by HDPE (High density polyethylene), most of it is recycled plastic making the device one of CLEAR RIVERS’ circular products.
Installation: The Litter Trap floats on the surface but is also anchored to the bottom of the river with spud poles or is attached to the river bank by a rail system, to prevent it from drifting away. The anchoring system is rather simple and it works with two metal poles fixed to the riverbed; the Trap is then inserted between these two poles thanks to two anchoring rings. The rings can be placed in both sides in case of strong water current of flood prone rivers. Not having a fixed anchoring system allows the Litter Trap to “swing” up and down on the poles, meaning that in case of water level fluctuation, the Trap will be able to continue its capturing function.
Depending on the quantities of litter, the Traps will need to be emptied on a regular basis, either by manually collecting the litter or by removing the “door” at the end of it. The Litter Trap is accessible for emptying via the deck and bridges on top. More than half of the Litter Trap’s structure will be submerged and a platform will ease the maintenance and the emptying procedures. CLEAR RIVERS also combine floating booms with the Litter Trap to catch more litter and direct it inside the Trap. These booms can be up to 200 meters long. The Litter Trap will not disturb existing ship traffic thanks to its convenient and effective positioning.
The estimated costs for the production and implementation of one Litter Trap are between €50.000 and €100.000 depending on the Litter Trap’s model and the locations.
Other litter booms, traps and river collection technologies are being deployed on waterways, including The Great Bubble Barrier, Storm X, The Shoreliner, the Seabin and The Interceptor, among others.
- Three Litter Traps in the Netherlands: One Litter Trap is located in Rotterdam in the Keilehaven (Benjamin Franklinstraat, 3029 AC, Rotterdam) since 2017. Two other Litter Traps are already been produced and are ready to be replaced in Rotterdam in the summer of 2020.
- One Litter Trap in Belgium: The Litter Trap is located at 6 Place des Armateurs, 1000, Brussels since 2018.
- Pilot in Ambon, Indonesia: From 2017 to 2019 a pilot study implemented three Litter Traps made by reused local materials in Ambon, Indonesia.
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