SBB HOT WATER SPRAY SYSTEM
SUSTAINABLE TECHNOLOGY: HOT WATER FOR WEED KILLING
The herbicide glyphosate has been on everyone’s lips for quite some time now and is attracting negative criticism. This has also been recognized by the SBB, which has so far used this controversial product to destroy weeds on its tracks.
SBB’s goal is to completely stop the use of glyphosate by 2025 and to use alternative weed killing methods instead.
As an environmentally friendly alternative, the use of hot water, which is sprayed onto the weeds via nozzles, is planned. This sustainable technology is currently being tested and is promising.
SBB presented the new procedure to the media on 27 June 2019.
SBB’S NEW HOT WATER SPRAYING SYSTEM – A DEVELOPMENT BY QUO
Together with SBB, QUO has developed the sustainable technology for the hot water spraying system for weed killing. In accordance with SBB specifications, we at QUO have taken over the concept development for the hydraulic system. Starting with an initial innovative search for ideas, through feasibility studies and the construction of a functional prototype. QUO then carried out a proof of concept for the developed concept, with the aid of a test facility set up in QUO’s own workshop.
During development, different valve and nozzle types were examined until the desired water flow and reaction times were achieved. QUO also adapted the sensors of Weedseeker®, an existing commercial weed detection system, for use on the SBB train. The system is now able to reliably detect weeds at a distance of up to two metres above the ground so that the hot water can also be sprayed onto the plants laterally of the tracks.
APPLICATION TESTS HAVE BEEN STARTED
The test phase of the hot water spraying system co-developed by QUO is currently underway and all parties are eagerly awaiting the results. In a next step, the findings from the tests will be incorporated into the further development of the process, so that SBB will ultimately have an optimum and environmentally friendly system at its disposal.
Further information can also be found in a clip in the RTS programme “Le 1930”.