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J Korean Soc Environ Eng 2015;37(10): 578-582. doi: https://doi.org/10.4491/KSEE.2015.37.10.578
가축분뇨의 마이크로버블과 촉매와의 반응 시간 증가에 따라 질소 제거에 미치는 영향
장재경, 성제훈, 강연구, 김영화
국립농업과학원 농업공학부 에너지환경공학과
The Effect of the Reaction Time Increases of Microbubbles with Catalyst on the Nitrogen Reduction of Livestock Wastewater
Jae Kyung Jang, Sung Je Hoon, Youn Koo Kang, Young Hwa Kim
Energy and Environmental Division, National Academy of Agricultural Science
Corresponding author  Jae Kyung Jang ,Tel: 063-238-4074, Fax: 063-238-4078, Email: jkjang1052@korea.kr
Received: September 18, 2015;  Revised: October 20, 2015;  Accepted: October 29, 2015.  Published online: October 31, 2015.
It was investigated whether the removal of nitrogen ions included livestock wastewater were increased by increasing the reaction time of livestock wastewater and microbubbles with catalyst. For this study, the nitrogen reduction system using microbubbles with catalyst was used. The two reactors were consecutively arranged, and the second reactor (Step 2) was located to next the first reactor (Step 1). Each reactor was reacted for 2 hours and air or oxygen as oxidant was fed into the reactor during operation before microbubble device. When oxygen was used, ammonia nitrogen was removed each 18.3% and 52.8% during 2 (only step 1) and 4 (step 1 and step 2) hours reactions. This value was higher than that of when air was fed. When oxygen was used, the longer the reaction time, the ammonia nitrogen removal was higher. The longer the reaction time, the higher the nitrite and nitrate was also removed such as ammonia nitrogen. Also this system was examined whether organic matter removal is effective. The total chemical oxygen demand (TCOD) removal was higher than the soluble chemical oxygen demand (SCOD). Some materials among causing substances COD were difficult to decompose biologically. Therefore, it means that it will be easy to operate the biological processes following step and reduce the concentration of organic contaminants in effluent.
Key Words: Microbubble, Catalyst, Ammonia-Nitrogen, Nitrate-Nitrogen, Livestock Wastewater
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