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KMID : 1024520190280110983
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Journal of the Environmental Sciences
2019 Volume.28 No. 11 p.983 ~ p.991
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Simultaneous Removal of Organic Pollutants, N, P, and Antibiotics from Liquid Fertilizer using a Microbubble and Catalyst Coupling System
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Lee Dong-Gwan
Sim Young-Ho
Paek Yee
Kwon Jin-Kyung
Jang Jae-Kyung
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Abstract
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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, BOD5, and NH3-N, and PO4-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.
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KEYWORD
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Microbubble, Catalyst, Livestock wastewater, Liquid fertilizer, Antibiotics, Organic pollutants
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