[[File:Screenshot 2025-08-13 113919.png|500px|thumb|[[Bioretention]] schematic, with circles highlighting ZVI addition and phosphorus removal <ref name = Lechner>Lechner L. Phosphorus Removal From Stormwater Using Zero-Valent Iron. 2016. Applied Science Masters Thesis.</ref>.]] | [[File:Screenshot 2025-08-13 113919.png|500px|thumb|[[Bioretention]] schematic, with circles highlighting ZVI addition and phosphorus removal <ref name = Lechner>Lechner L. Phosphorus Removal From Stormwater Using Zero-Valent Iron. 2016. Applied Science Masters Thesis.</ref>.]] |