These Floating Islands Aren't Real--But They Are Cleaning Up Rivers
Published on by Naizam (Nai) Jaffer, Municipal Operations Manager (Water, Wastewater, Stormwater, Roads, & Parks) in Technology
Floating islands are designed to grow "biofilms"—collections of microbes that consume the excessive nutrients in the water. Each platform is made up of a matrix of fibers derived from post-consumer plastic bottles, then infused with a buoyant marine foam. The plants on top, mostly perennials, grow in a peat layer. The biofilms congregate on the bottom of the structure, while roots from the plants peep through, offering additional pollution control.
Source: Co.Exist
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