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TNT 오염토양의 생물학적 처리에 대한 Vibrio Fischeri 독성 평가
박준석 ( Joon Seok Park ),인병훈 ( Byung Hoon In ),남궁완 ( Nam Koong Wan ) 한국유화학회 2013 한국응용과학기술학회지 Vol.30 No.2
Abstract : This research was performed to evaluate Vibrio fischeri toxicity for TNT-contaminated soils treated by composting and slurry phase bioreactor, which were operated for 45 and 200 days, respectively. In case of composting, the GL value of acetone-added soil was 40, which was lower than that of glucose-added soil after treatment. In case of slurry phase bioreactors under anaerobic, anaerobic/aerobic, and aerobic regimes, they showed the GL values of 6, 8, and 4 after treatment, respectively. It was evaluated that the toxicity of all slurry phase bioreactors was reduced significantly to detoxification. The relationships between GL value and the number of S. typhimurium in both composting and slurry phase bioreactor were developed as the first order equations with high correlation coefficient (r > 0.8890).
수도권 매립지 침출수의 질산화 및 탈질에 관한 동적 연구
원종철 ( Jong-choul Won ),배영신 ( Young-shin Bae ),이정우 ( Jung-woo Lee ),이환규 ( Hwan-kyu Lee ),남궁완 ( Wan Nam-koong ),윤조희 ( Cho-hee Yoon ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
본 연구는 고농도 암모니아성 질소를 함유하고 있는 수도권 매립지 침출수의 생물학적 질산화 및 탈질의 동적 조건 연구를 위해 수행되었다. bench-scale의 MLE(수정 Ludack Ettinger) 공법이 적용되었으며, SRT(슬러지 체류시간)는 100일에서 20일로 변화되었다. NH4+- N 제거율이 NH4+-N 주입율의 0.33 kgNH4+-N/m3/day 이상 선형적으로 증가하였다. NH4+-N 및 T-N의 제거 효율은 각각 97.3%, 76.5%이며, BOD, CODCr의 경우에도 이와 비슷한 결과인 99.6% 및 88.7%의 제거율을 나타내었다. 결과로부터, 탈질 및 질산화 동력학식이 NH4+-N과 CODCr 농도의 효율이 Monod 동력학식으로 묘사될 수 있는 것으로 나타났다. 질소 제거에 적용하기 위한 동력학 계수는 Yn = 0.95 gVSS·gNH4+-N-l, Kdn = 0.024 day-1이며, C-CODCr 제거에는 Yc = 0.235 gVSS·gCODCr-l and Kdc = 0.032 day-1 으로 결정되었다. This study was conducted to investigate the kinetic parameters of biological nitrification and denitrification for SUDOKWON Landfill Site leachate containing high concentration of ammonium nitrogen. The bench-scale MLE(Modified Ludack Ettinger) process was employed for this purpose. Sludge retention time(SRT) was changed from 100 days to 20 days. The removal rates of NH4+-N increased linearly up to 0.33 kgNH4+-N/m3/day of NH4+-N loading rate. Removal efficiencies of NH4+- N and T-N were 97.3% and 76.5%, respectively. Similar results were obtained for BOD and CODCr, removal efficiencies 99.6% and 88.7%, respectively. From the results, it was found that the effect of NH4+-N and CODCr concentrations on denitrification and nitrification kinetics have could be described by Monod kinetics. Kinetic coefficients by using these equations for nitrogen removal were determined as Yn = 0.95 gVSS gNH4+-N-l, Kdn = 0.024 day-1, and for carboneous CODCr removal determined with Yc = 0.235 gVSS gCODCr-1 and Kdc = 0.032 day-1.