Trapping phosphorus in runoff with a phosphorus removal structure

Journal of Environmental Quality
Chad PennDerek Heeren

Abstract

Reduction of phosphorus (P) inputs to surface waters may decrease eutrophication. Some researchers have proposed filtering dissolved P in runoff with P-sorptive byproducts in structures placed in hydrologically active areas with high soil P concentrations. The objectives of this study were to construct and monitor a P removal structure in a suburban watershed and test the ability of empirically developed flow-through equations to predict structure performance. Steel slag was used as the P sorption material in the P removal structure. Water samples were collected before and after the structure using automatic samples and analyzed for total dissolved P. During the first 5 mo of structure operation, 25% of all dissolved P was removed from rainfall and irrigation events. Phosphorus was removed more efficiently during low flow rate irrigation events with a high retention time than during high flow rate rainfall events with a low retention time. The six largest flow events occurred during storm flow and accounted for 75% of the P entering the structure and 54% of the P removed by the structure. Flow-through equations developed for predicting structure performance produced reasonable estimates of structure "lifetime" (16.8 mo). Howeve...Continue Reading

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Citations

May 17, 2014·Journal of Environmental Management·Gry LyngsieOle K Borggaard
Aug 10, 2013·Environmental Toxicology and Chemistry·Laura A WendlingMerrin S Adams
Oct 3, 2018·Journal of Environmental Quality·Zhixuan QinKathryn C Turner
Nov 13, 2013·Journal of Environmental Quality·Andrew SharpleyPeter Kleinman
Apr 6, 2019·Journal of Environmental Quality·Rachel L NifongMatthew T Moore
May 9, 2012·Journal of Environmental Quality·Dustin StonerJason Warren
May 9, 2012·Journal of Environmental Quality·Anthony R BudaWim J Chardon
May 20, 2017·Water Research·Laura E ChristiansonSteven T Summerfelt

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