FAQ
In order to remove as many of your perplexities as possible, we have decided to gather together some of the FAQs most frequently encountered during our journey.
Retention, resistance and maintenance
What debris can rotating devices handle?
The River Cleaning barrier intercepts more than 90%, on average, of the debris found in the surface water (0-35 cm below the water level). The size spectrum of the intercepted debris is 2 – 70 cm. The materials recovered usually vary depending on the area, but the most frequent, in addition to organic debris, are plastic objects such as bottles, foodcontainers and packaging.
What happens when large-sized debris is in the water? (e.g., branches, logs)
In the case of large debris such as branches or logs, you can choose the desired system response: thanks to the object recognition function you can choose to lift and lower the system remotely to allow that debris through. Let us not forget that logs and branches are nourishment for the ecosystem! Should you want to retain the object (for instance, if there is plastic litter together with the branches), the system will detect the operational blockage and send a signal for removal.
How does the system behave in unfavorable environmental conditions?
The River Cleaning system is specifically designed to offer little surface area and, therefore, resistance to the force of water, using it to enhance performances instead. Consequently, the structure is also able to withstand stronger currents. During particularly violent floods, the barrier can be lifted from the water temporarily and put back in actionwhen conditions are more favorable.
What kind of maintenance does it require?
The system is designed to carry out regular cleaning cycles independently, including the removal of large debris. If there are persistent faults that require extraordinary maintenance, these will be limited to individual rotating units, which can be easily replaced or repaired.
Installation and operation
How are the devices kept in place?
The devices are anchored with an overhead structure that acts as a truss and keeps all the devices on axis.
Is there a standardized version of River Cleaning?
When it comes to river pollution, we cannot afford to install a system that risks being inefficient or sub-optimal. That is precisely the reason we refer to ‘one river, one solution’: customizing the system is not just a question of size, but also of functionality and level of automation. Working on a river means fitting into a place’s institutional, social and industrial tissue. That is why, just as it is possible to choose options for a car, it is our job to know each customer’s needs and study the best solution.
How is the system energetically self-sufficient?
In its basic application and provided that water is moving, River Cleaning harnesses the power of water to operate. It can generate electricity through the rotating motion and store it in a battery pack. This electricity is used to power specific parts of the system remotely. Should there be additional components such as a conveyor belt for automatic extraction of waste, solar panels would be added to maintain energy consumption neutrality.
How does the system let vessels pass?
For rivers and navigable canals, the system is equipped with recognition technology that detects incoming boats and automatically triggers the command to raise or open the system, depending on the installed solution.
Waste collection and collection
What does the collection point look like?
In its simplest version, the collection point consists of a conduit-like piece of the structure at the end of the series of rotating buoys. The piece is anchored but able to float and extends down below the water surface, deep enough to catch debris in the system’s area of effect, approximately 40 cm below the water level. A net is attached to the collection duct and, once filled, can be easily unhooked and emptied. If it is required by the customer and the location allows it, it is possible to install an automated conveyor belt instead of the net to take the waste directly out of thewater.
How is waste collection handled?
Waste pick-up requires prior arrangement with the waste management authority and/or company in the area or municipality. Once the system is in place, no special operations are required. We make the necessary contacts and organize the waste collection partners on site.