Pilot 플라즈마 반응기를 이용한 하수 중 미생물의 불활성화
Inactivation of Microorganisms in Sewage Using a Pilot Plasma Reactor
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Objectives: For the field application of the dielectric barrier discharge plasma reactor, scale-up of the plasma reactor is needed. This study investigated the possibility of inactivation of microorganisms in sewage using pilot multi-plasma reactor. We also considered the possibility of degradation of total organic carbon (TOC) and nonbiodegradable matter (UV254) in sewage. Methods: The pilot plasma reactor consists of plasma reactor with three plasma modules (discharge electrode and quartz dielectric tube), liquid-gas mixer, high voltage transformers, gas supply equipment and a liquid circulation system. In order to determine the operating conditions of the pilot plasma reactor, we performed experiments on the operation parameters such as gas and liquid flow rate and electric discharge voltage. Results: The experimental results showed that optimum operation conditions for the pilot plasma reactor in batch experiments were 1 L/min air flow rate), 4 L/min liquid circulation rate, and 13 kV electric discharge voltage, respectively. The main operation factor of the pilot plasma process was the high voltage. In continuous operation of the air plasma process, residual microorganisms, UV254 absorbance and TOC removal rate at optimal condition of 13 kV were 102.24 CFU/mL, 56.5% and 8.6%, respectively, while in oxygen plasma process at 10 kV, residual microorganisms, UV254 absorbance and TOC removal rate at optimal conditions were 101.0 CFU/mL, 73.3% and 24.4%, respectively. Electric power was increased exponentially with the increase in high voltage (R2 = 0.9964). Electric power = 0.0492×exp(0.6027×electric discharge voltage)Conclusions: Inactivation of microorganisms in sewage effluent using the pilot plasma process was done. The performance of oxygen plasma process was superior to air plasma process. The power consumption of oxygen plasma process was less than that of air plasma process. However, it was considered that the final evaluation of air and oxygen plasma must be evaluated by considering low power consumption, high process performance,operating costs and facility expenses of an oxygen generator.
Abstract
Objectives: For the field application of the dielectric barrier discharge plasma reactor, scale-up of the plasma reactor is needed. This study investigated the possibility of inactivation of microorganisms in sewage using pilot multi-plasma reactor. We also considered the possibility of degradation of total organic carbon (TOC) and nonbiodegradable matter (UV254) in sewage. Methods: The pilot plasma reactor consists of plasma reactor with three plasma modules (discharge electrode and quartz dielectric tube), liquid-gas mixer, high voltage transformers, gas supply equipment and a liquid circulation system. In order to determine the operating conditions of the pilot plasma reactor, we performed experiments on the operation parameters such as gas and liquid flow rate and electric discharge voltage. Results: The experimental results showed that optimum operation conditions for the pilot plasma reactor in batch experiments were 1 L/min air flow rate), 4 L/min liquid circulation rate, and 13 kV electric discharge voltage, respectively. The main operation factor of the pilot plasma process was the high voltage. In continuous operation of the air plasma process, residual microorganisms, UV254 absorbance and TOC removal rate at optimal condition of 13 kV were 102.24 CFU/mL, 56.5% and 8.6%, respectively, while in oxygen plasma process at 10 kV, residual microorganisms, UV254 absorbance and TOC removal rate at optimal conditions were 101.0 CFU/mL, 73.3% and 24.4%, respectively. Electric power was increased exponentially with the increase in high voltage (R2 = 0.9964). Electric power = 0.0492×exp(0.6027×electric discharge voltage)Conclusions: Inactivation of microorganisms in sewage effluent using the pilot plasma process was done. The performance of oxygen plasma process was superior to air plasma process. The power consumption of oxygen plasma process was less than that of air plasma process. However, it was considered that the final evaluation of air and oxygen plasma must be evaluated by considering low power consumption, high process performance,operating costs and facility expenses of an oxygen generator.
참고문헌 (19)
- Korea Water Resources Corporation, "Evaluation of an applicability of alternative disinfectants on water and wastewater treatment process", ~ (2004)
- Steen PV, "The effect of environmental conditions on fecal caliform decay in post-treatment of UASB reactor effluent", Wat Sci Tech, 42(10-11), pp.111~118 (2000)
- Water Environment Federation, "Wastewater disinfection: Manual of Practice", FD-10 Va: 37- 39, ~ (1996)
- 백영석, "하수방류수의 대장균군 발생에 영향을 미치는 수질인자에 관한 연구", 한국물환경학회지, 22(1), pp.166~171 (2006), 한국물환경학회
- Korea Ministry of Environment, "General guidelines for business transactions handled the installation of the sewage treatment plant disinfection facilities", ~ (2002)
- 백영석, "하수 염소 소독시 소독부산물 발생 특성", 한국물환경학회지, 20(3), pp.275~280 (2004), 한국물환경학회
- Chung GS, "A study on the disinfection of coliformgroup in the effluent of sewage plant by high voltage electric field treatment", pp.2004
- Korea Ministry of Environment., "Public sewerage system installation business guide", ~ (2007)
- 이민규, "고전압 전기장을 이용한 하수처리장 방류수 중의 대장균군 소독에 관한 연구", 한국환경과학회지, 17(7), pp.817~826 (2008), 한국환경과학회
- JJung KW, "Photoreactivation study of wastewater treatment effluent disinfected by UVirradiation for water reuse", Kor Soc of Wat and Wastewat Kor Soc on Wat Environ 2003 Joint Spring conference Proceeding, pp.105~108 (2003)
- Antoniadis N, "Sonochemical disinfection of municipal wastewater", J Hazard Mater, 146, pp.492~495 (2007)
- 김동석, "멀티 플라즈마 반응기를 이용한 E. coli 소독", 한국환경보건학회지, 39(2), pp.187~195 (2013), 한국환경보건학회
- 김동석, "3차원 전극을 사용한 Rhodamine B의 전기분해에 미치는 운전인자의 영향", 한국환경보건학회지, 35(4), pp.295~303 (2009), 한국환경보건학회
- 류승민, "2계면 플라즈마 방전시스템(DBD System)의 특징 및 소독제로서 방전수의 사용가능성에 대한연구", 상하수도학회지, 18(4), pp.529~536 (2004), 대한상하수도학회
- 김동석, "유전체 장벽 방전 플라즈마 방전수의 특성과 미생물 소독에 관한 연구", 한국환경보건학회지, 38(02), pp.159~165 (2012), 한국환경보건학회
- "Duk San Science" (2013)[URL]
- Tezcanli-Guyer G, "Degradation and toxicity reduction of textile dyestuff by ultrasound", Ultraso Sonochem, 10, pp.235~240 (2003)
- Njatawidjaja E, "Decoloration of electrostatically atomized organic dye by the pulsed streamer corona discharge", J Electrostat, 63, pp.353~359 (2005)
- Park YS, "The generation of H2O2 and O3 in oxygen plasma processes", 2011 Annual Conference Proceeding, 20, pp.180~182 (2011), Kor Environ Soc Sci