Migration and transformation of different phosphorus forms in rainfall runoff in bioretention system

Migration and transformation of different phosphorus forms in rainfall runoff in bioretention system Artificial bioretention system consisting of Ophiopogon japonicus infiltration medium was used to simulate an infiltration experiment of rainfall runoff. Continuous extraction method was used to detect contents of inorganic phosphorus (P) under exchangeable state (Ex-P) and aluminium phosphate (Al–P) and iron phosphate (Fe–P) at different depths (0, 5, 15 and 35 cm) of soil infiltration medium in bioretention system. Effluent total P (TP) concentration of the system was also monitored. Results indicated that the adsorption of inorganic P, Al–Pand Fe–P by soil infiltration medium was implemented layer by layer from top to bottom and gradually weakened. Moreover, Ex-P was gradually transformed into Al–Pand Fe–P, whereas Al–P was gradually transformed into Fe–P; thus, Ex-P content reduced layer by layer, whereas Al–Pand Fe–P gradually accumulated. The TP removal rate in runoff rainwater by the system was more than 90%, where the TP that was not used by plants was under dynamic equilibrium in water–soil–root system/biological system. . . . . . Keywords Migration Phosphorus Soil Botany Ecosystem Rainfall Introduction generated with rainwater runoff. Combined sewer overflow was reduced by lowering the flow quantity of peak rainwater Urban rainwater runoff contains many pollutants generated by in the pipeline to relieve water accumulation http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Science and Pollution Research Springer Journals

Migration and transformation of different phosphorus forms in rainfall runoff in bioretention system

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Environment; Environment, general; Environmental Chemistry; Ecotoxicology; Environmental Health; Atmospheric Protection/Air Quality Control/Air Pollution; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
ISSN
0944-1344
eISSN
1614-7499
D.O.I.
10.1007/s11356-018-2405-4
Publisher site
See Article on Publisher Site

Abstract

Artificial bioretention system consisting of Ophiopogon japonicus infiltration medium was used to simulate an infiltration experiment of rainfall runoff. Continuous extraction method was used to detect contents of inorganic phosphorus (P) under exchangeable state (Ex-P) and aluminium phosphate (Al–P) and iron phosphate (Fe–P) at different depths (0, 5, 15 and 35 cm) of soil infiltration medium in bioretention system. Effluent total P (TP) concentration of the system was also monitored. Results indicated that the adsorption of inorganic P, Al–Pand Fe–P by soil infiltration medium was implemented layer by layer from top to bottom and gradually weakened. Moreover, Ex-P was gradually transformed into Al–Pand Fe–P, whereas Al–P was gradually transformed into Fe–P; thus, Ex-P content reduced layer by layer, whereas Al–Pand Fe–P gradually accumulated. The TP removal rate in runoff rainwater by the system was more than 90%, where the TP that was not used by plants was under dynamic equilibrium in water–soil–root system/biological system. . . . . . Keywords Migration Phosphorus Soil Botany Ecosystem Rainfall Introduction generated with rainwater runoff. Combined sewer overflow was reduced by lowering the flow quantity of peak rainwater Urban rainwater runoff contains many pollutants generated by in the pipeline to relieve water accumulation

Journal

Environmental Science and Pollution ResearchSpringer Journals

Published: Jun 4, 2018

References

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