Down to the last drop_urban fog catcher by Dagny Rewera from uk

The ‘Down to the Last Drop’ Urban Fog Catcher aims to harvest humidity in the urban cityscape of Incheeon Korea and supply purified drinkable water.
It is strategically positioned along the shoreline to intercept the seasonal prevailing winds, which carry high levels of moisture in the atmosphere.
A rotating, stretched polypropylene mesh that spans 2.15 metres wide and 3 metres above ground level is used for the harvest. Given frequent humid conditions it has the capacity to capture 50 litres+ of water during a 24hour period.
Drop by drop, precious water droplets form on the mesh as the fog passes through. The water droplets are trajected downwards into the structural ‘stem’ where a 2-stage filtration system is in place. Coconut carbonate granules act as a first stage of filtration trapping sediments and eliminating airborne and other toxic fumes. Perforated ceramic disks are placed further down for greater purification as well as eliminating odours.
Water is accumulated at the frontal storage and expandable membrane unit where it is exposed periodically to regulated UV light emissions. This acts as a final anti-bacterial treatment necessary for human consumption. The expandable membrane acts as an overflow system where it stores, in a case required, from excessive collection. At this stage water can be streamed outwards for public usage.