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http://dx.doi.org/10.4491/KSEE.2017.39.11.599

Simultaneous Removal of Organic Pollutants, Nitrogen, and Phosphorus from Livestock Wastewater by Microbubble-Oxygen in a Single Reactor  

Jang, Jae Kyung (National Institute of Agricultural Sciences, Rural Development Administration)
Jin, Yu Jeong (National Institute of Agricultural Sciences, Rural Development Administration)
Kang, Sukwon (National Institute of Agricultural Sciences, Rural Development Administration)
Kim, Taeyoung (National Institute of Agricultural Sciences, Rural Development Administration)
Paek, Yee (National Institute of Agricultural Sciences, Rural Development Administration)
Sung, Je Hoon (National Institute of Agricultural Sciences, Rural Development Administration)
Kim, Young Hwa (National Institute of Agricultural Sciences, Rural Development Administration)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.11, 2017 , pp. 599-606 More about this Journal
Abstract
The effects of microbubble-oxygen physicochemical method for the removal of organic pollutants, nitrogen, and phosphorus contained in animal manure were investigated using a laboratory scale single reactor. The characteristics of used livestock manure were $36,894{\pm}5,024mg\;TCOD/L$, $22,031{\pm}2,018mg\;SCOD/L$, $4,150{\pm}35mg\;NH_4-N/L$, and $659{\pm}113mg\;PO_4-P/L$. It was confirmed that the amount of organic pollutants, nitrogen, and phosphorus removal was increased by the use of oxygen rather than air as the gas supplied with the microbubble, and by input of larger oxygen amount. When the oxygen was fed with 600 mL flow rate per minute, TCOD and phosphorus removal were 2.5 times and 5.6 times higher than those of air supplied. As the microbubble-oxygen reaction time was longer, the removal rate of nutrients increased gradually. The removal rates of ammonium and phosphorus reach to $41.03{\pm}0.20%$ and $65.49{\pm}1.39%$, respectively, after 24 hours. When the coagulation treatment method was applied to increase phosphorus removal rate from the effluent of microbubble-oxygen treatment, the phosphorus was removed up to 92.7%. However, the removal rate of organic pollutants (TCOD) was as small as $28.7{\pm}0.2%$ within the first 6 hours, and then the negligible removal of TCOD was recorded. This study suggests that microbubble-oxygen can be applied not only livestock manure but also aeration tank of various wastewater treatment plant, which can reduce the load on the associated unit process and produce stable high-quality effluent.
Keywords
Microbubble; Livestock Wastewater Treatment; Ammonium-Nitrogen; Phosphate Phosphorus;
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Times Cited By KSCI : 1  (Citation Analysis)
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