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http://dx.doi.org/10.5322/JESI.2019.28.11.983

Simultaneous Removal of Organic Pollutants, N, P, and Antibiotics from Liquid Fertilizer using a Microbubble and Catalyst Coupling System  

Lee, Dong Gwan (Department of Agricultural Engineering, National Institute of Agricultural Sciences)
Sim, Young Ho (Department of Agricultural Engineering, National Institute of Agricultural Sciences)
Paek, Yee (Department of Agricultural Engineering, National Institute of Agricultural Sciences)
Kwon, Jin Kyung (Department of Agricultural Engineering, National Institute of Agricultural Sciences)
Jang, Jae Kyung (Department of Agricultural Engineering, National Institute of Agricultural Sciences)
Publication Information
Journal of Environmental Science International / v.28, no.11, 2019 , pp. 983-991 More about this Journal
Abstract
This study investigated the use of a hydroxyl-radicals-generated microbubble/catalyst (MB/Cat) system for removing organic pollutants, nitrogen, and phosphorous from liquid fertilizer produced by livestock wastewater treatment. Use of the MB/Cat system aims to improve the quality of liquid fertilizer by removing pollutants originally found in the wastewater. In addition, a reduction effect has been reported for antibiotics classified as representative non-biodegradable matter. Samples of liquid fertilizer produced by an aerobic biological reactor for swine wastewater treatment were first analyzed for initial concentrations of pollutants and antibiotics. When the MB/Cat system was applied to the liquid fertilizer, TCOD, TOC, $BOD_5$, and $NH_3-N$, and $PO_4-P$ removal efficiencies were found to be approximately 52%, 51%, 30%, 21%, and 66%, respectively. Additionally, Amoxicillin hydrate was removed by 10%, and Chlortetracycline HCl and Florfenicol were not present at detectable levels These findings confirm that the MB/Cat system can be used with livestock wastewater treatment to improve liquid fertilizer quality and to process wastewater that is safe for agricultural re-use.
Keywords
Microbubble; Catalyst; Livestock wastewater; Liquid fertilizer; Antibiotics; Organic pollutants;
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