Vmedvil2 Posted June 25, 2021 Report Share Posted June 25, 2021 It seems in Canada a new approach to treating waste water has been applied which is using willow tree roots to filter the waste water, read more at https://phys.org/news/2021-06-bio-refinery-chemistry-willow-trees-canada.html Quote Link to comment Share on other sites More sharing options...
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