Denitrifying woodchip bioreactor and phosphorus filter pairing to minimize pollution swapping

Water Research
Laura E ChristiansonSteven T Summerfelt

Abstract

Pairing denitrifying woodchip bioreactors and phosphorus-sorbing filters provides a unique, engineered approach for dual nutrient removal from waters impaired with both nitrogen (N) and phosphorus (P). This column study aimed to test placement of two P-filter media (acid mine drainage treatment residuals and steel slag) relative to a denitrifying system to maximize N and P removal and minimize pollution swapping under varying flow conditions (i.e., woodchip column hydraulic retention times (HRTs) of 7.2, 18, and 51 h; P-filter HRTs of 7.6-59 min). Woodchip denitrification columns were placed either upstream or downstream of P-filters filled with either medium. The configuration with woodchip denitrifying systems placed upstream of the P-filters generally provided optimized dissolved P removal efficiencies and removal rates. The P-filters placed upstream of the woodchip columns exhibited better P removal than downstream-placed P-filters only under overly long (i.e., N-limited) retention times when highly reduced effluent exited the woodchip bioreactors. The paired configurations using mine drainage residuals provided significantly greater P removal than the steel slag P-filters (e.g., 25-133 versus 8.8-48 g P removed m(-3) filte...Continue Reading

References

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Sep 11, 2016·Water Research·Laura E ChristiansonSteven T Summerfelt
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Nov 30, 2016·Journal of Environmental Quality·Joseph R Sanford, Rebecca A Larson

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Citations

Feb 24, 2019·Environmental Science and Pollution Research International·Thi Huong Xuan LePetra Marschner
May 24, 2019·Environmental Technology·Soureyatou HamidouYann LeBihan
Jan 15, 2019·Journal of Environmental Quality·Bryan M MaxwellMohamed A Youssef
Apr 6, 2019·Journal of Environmental Quality·Stefan JansenJan Gerritse
Jul 17, 2020·Environmental Science and Pollution Research International·Jitka MaláZuzana Bílková
Oct 6, 2020·The Science of the Total Environment·Chengjin MaShiyang Li
Nov 28, 2017·Journal of Environmental Management·Shiyang LiRabin Bhattarai
Apr 26, 2020·The Science of the Total Environment·Galen GorskiChad Saltikov
Dec 5, 2018·Journal of Environmental Management·Brady S L ColemanEmily M Bock
Jul 28, 2021·Environmental Geochemistry and Health·Guigui XuHaiting Liang

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