Im, Jiyeol Jung, Jinyoung Bae, Hyokwan Kim, Daeik Gil, Kyungik 2024-01-20T09:31:30Z 2024-01-20T09:31:30Z 2021-09-05 2014-07 1866-6280 https://pubs.kist.re.kr/handle/201004/126613 Nitritation is an innovative biological nitrogen removal method in wastewater, and it has the advantages of energy and economy. The correlation between a nitrite conversion rate and the gene copy numbers of ammonia oxidizing bacteria (AOB) in a nitritation reactor was examined to measure the effectiveness of removing a nitrogen content in a biological nitrogen removal process, using a biological process of nitritation. A laboratory scale reactor was prepared and operated for over a year, using digester supernatant to induce a stable nitritation, and to optimize the operational conditions by adjusting various operating factors. The relationship between operational results of nitritation reactor and the AOB gene copies was approximated through identification and quantitative analysis of AOB. A stable nitritation can be artificially led with the control of SRT, while treating anaerobic digester supernatant from MWTPs. And AOB gene copies showed a correlation with free ammonia (FA) inhibition and performance of nitritation, and AOB activity. Thus, AOB gene copies were found important when it comes to analyzing nitritation. English SPRINGER WASTE-WATER AMMONIA NITRIFICATION INHIBITION Correlation between nitrite accumulation and the concentration of AOB in a nitritation reactor Article 10.1007/s12665-014-3285-7 1 ENVIRONMENTAL EARTH SCIENCES, v.72, no.1, pp.289 - 297 ENVIRONMENTAL EARTH SCIENCES 72 1 289 297 scie scopus 000337602800025 2-s2.0-84902347514 Environmental Sciences Geosciences, Multidisciplinary Water Resources Environmental Sciences & Ecology Geology Water Resources Article WASTE-WATER AMMONIA NITRIFICATION INHIBITION Recycle water Nitritation Nitrite Ammonia oxidizing bacteria (AOB) Municipal wastewater treatment plant (MWTP)