Marseille’s Old Port has seen the installation of an innovative new waste capture device that intercepts rubbish destined for the sea.
The ‘D-Rain’ system is the product of local startup Green City Organisation, which aims to fight water pollution in the Mediterranean.
The organisation says that 80% of sea pollution comes from land and that “with each major rainfall event, coastal cities discharge waste, plastics and other emerging pollutants directly into the sea via land and underwater stormwater outfalls, like a flush”.
the concept of the “D-Rain system” is simple: it consists of a net connected to both offshore and onshore water outlets that is able to capture waste as small as 5mm.
The net has a volume of 10m³ and will need to be emptied ten times a year.
The system is able to alert when the net is full so that the water flow can be released and the net can be emptied.
Sensors on the system are also able to measure the quality of the water, collecting data on factors such as acidity, turbidity and levels of oxygen.
Within five years, the organisation aims to recover the equivalent of what France discharges into the Mediterranean – 11,000 tonnes of waste per year.
So far, it has been recognised by various institutions and received multiple awards, including the Monaco Smart & Sustainable Marina Award 2021 and the Special Jury Prize in the EDF Pulse 2021 competition (Biodiversity and Nature Protection category)