[국내논문]Hybrid Anaerobic Reactor를 이용한 음식물쓰레기의 혐기성처리 및 에너지 회수에 관한 연구 A Study on Anaerobic Treatment and Energy Recovery Technology of Food Waste by Using Hybrid Anaerobic Reactor원문보기
2005.1.1부터 직 매립 금지 이후 음식물쓰레기를 처리하는 데 있어 많은 사회적 문제가 대두되고 있다. 그리고 우리나라의 경우 전국 음식물쓰레기 배출량이 11,398ton/day('03)으로 상당히 많은 양이 배출되고 있으며, 주로 음식물쓰레기는 매립, 소각, 사료나 퇴비로 재활용하는 방법으로 처리하고 일부 음식물쓰레기는 혐기성으로 처리 하는 방법이 사용되어 왔다. 이 중 혐기성 처리는 유용한 메탄가스를 발생하여 에너지로 사용가능 하다. 본 연구에서는 pH가 낮고 많은 양의 유기물과 고형물을 함유하고 있어 1단 혐기성 처리시 운전에 영향을 줄 것으로 예상되는 음식물쓰레기의 1단 혐기성처리 가능성 및 혐기성 처리시 메탄가스를 이용하여 에너지로서 사용 가능성에 대해 알아보고자 연구를 실시 하였다. 처리시간과 비용을 절감하기 위해 산형성조를 거치지 않고 반 고형물의 유입시 부유물로 인해 발생될 수 있는 plugging와 channeling 현상을 방지하기 위해 USAB(up flow anaerobic sludge blank)의 장점과 낮은 pH의 음식물 쓰레기의 유입시 미생물에 미칠 수 있는 충격을 최소화 할 수 있는 AE(anaerobic filter)장점을 조합하여 환형유공 지지막속에 그레뉼을 충진시킨 Hybrid Anaerobic Reactor(HAR)를 제작하여 실험을 실시하였다. 본 연구에 앞서 음식물쓰레기의 혐기성 생분해도 실험을 실시하여 혐기성처리가능성을 검토하였으며 실험결과 첨가된 VS량당 총 누적메탄량은 $0.471(m^{3}/\cal{kg}\;VS)$로 원소 분석하여 얻은 이론 메탄발생량 $0.58(m^{3}/\cal{kg}\;VS)$의 $81.2\%$를 나타냈으며 유기물 분해속도 상수는 $0.18(d^{-1})$로 혐기성 처리가 가능하다는 사전 연구 결론을 도출하였다. 연구 결과, 낮은 pH인 음식물 쓰레기를 처리시 산발효조를 거치지 않고도 혐기성 처리가 가능하였으며, 높은 농도로 존재하는 유기물 및 고형물의 처리효율은 매우 양호했고 또한 인의 제거율도 높게 나타났다. 연구결과를 토대로 전국 음식물쓰레기(11,398ton/d)를 대상으로 에너지를 산출하면 Braun에너지 환산계수 $5.97kwh/m3(60\%\;CH_{4})$를 적용할 때 우리나라의 1일 음식물에서 발생되는 에너지 총량은 6,727MWh로 환산될 수 있으며 이는 유기물(COD)당 발생되는 메탄 가스량을 에너지원으로 사용하기에 충분히 가능하다는 것을 확인할 수 있었다. 이상의 결과에 의하면 고농도의 유기물이 함유된 음식물쓰레기는 Hybrid Anaerobic Reactor (HAR)를 이용하여 HRT 30일 정도에서 충분히 직접 혐기성처리가 가능하며, 이때 발생된 $CH_{4}$를 회수하여 이용하면 대체에너지원으로 활용 가치가 높은 것으로 판단된다.
2005.1.1부터 직 매립 금지 이후 음식물쓰레기를 처리하는 데 있어 많은 사회적 문제가 대두되고 있다. 그리고 우리나라의 경우 전국 음식물쓰레기 배출량이 11,398ton/day('03)으로 상당히 많은 양이 배출되고 있으며, 주로 음식물쓰레기는 매립, 소각, 사료나 퇴비로 재활용하는 방법으로 처리하고 일부 음식물쓰레기는 혐기성으로 처리 하는 방법이 사용되어 왔다. 이 중 혐기성 처리는 유용한 메탄가스를 발생하여 에너지로 사용가능 하다. 본 연구에서는 pH가 낮고 많은 양의 유기물과 고형물을 함유하고 있어 1단 혐기성 처리시 운전에 영향을 줄 것으로 예상되는 음식물쓰레기의 1단 혐기성처리 가능성 및 혐기성 처리시 메탄가스를 이용하여 에너지로서 사용 가능성에 대해 알아보고자 연구를 실시 하였다. 처리시간과 비용을 절감하기 위해 산형성조를 거치지 않고 반 고형물의 유입시 부유물로 인해 발생될 수 있는 plugging와 channeling 현상을 방지하기 위해 USAB(up flow anaerobic sludge blank)의 장점과 낮은 pH의 음식물 쓰레기의 유입시 미생물에 미칠 수 있는 충격을 최소화 할 수 있는 AE(anaerobic filter)장점을 조합하여 환형유공 지지막속에 그레뉼을 충진시킨 Hybrid Anaerobic Reactor(HAR)를 제작하여 실험을 실시하였다. 본 연구에 앞서 음식물쓰레기의 혐기성 생분해도 실험을 실시하여 혐기성처리가능성을 검토하였으며 실험결과 첨가된 VS량당 총 누적메탄량은 $0.471(m^{3}/\cal{kg}\;VS)$로 원소 분석하여 얻은 이론 메탄발생량 $0.58(m^{3}/\cal{kg}\;VS)$의 $81.2\%$를 나타냈으며 유기물 분해속도 상수는 $0.18(d^{-1})$로 혐기성 처리가 가능하다는 사전 연구 결론을 도출하였다. 연구 결과, 낮은 pH인 음식물 쓰레기를 처리시 산발효조를 거치지 않고도 혐기성 처리가 가능하였으며, 높은 농도로 존재하는 유기물 및 고형물의 처리효율은 매우 양호했고 또한 인의 제거율도 높게 나타났다. 연구결과를 토대로 전국 음식물쓰레기(11,398ton/d)를 대상으로 에너지를 산출하면 Braun에너지 환산계수 $5.97kwh/m3(60\%\;CH_{4})$를 적용할 때 우리나라의 1일 음식물에서 발생되는 에너지 총량은 6,727MWh로 환산될 수 있으며 이는 유기물(COD)당 발생되는 메탄 가스량을 에너지원으로 사용하기에 충분히 가능하다는 것을 확인할 수 있었다. 이상의 결과에 의하면 고농도의 유기물이 함유된 음식물쓰레기는 Hybrid Anaerobic Reactor (HAR)를 이용하여 HRT 30일 정도에서 충분히 직접 혐기성처리가 가능하며, 이때 발생된 $CH_{4}$를 회수하여 이용하면 대체에너지원으로 활용 가치가 높은 것으로 판단된다.
The total production of food waste was about 11,398ton/day('03) in Korea. Also, food waste was treated by landfill, incineration, reuse and anaerobic digestion. The method of food waste treatment depended primarily on landfill. However, the method of landfill causing social problems was prevented to...
The total production of food waste was about 11,398ton/day('03) in Korea. Also, food waste was treated by landfill, incineration, reuse and anaerobic digestion. The method of food waste treatment depended primarily on landfill. However, the method of landfill causing social problems was prevented to treat food waste in the first of January 2005.12) Thus, anaerobic digestion is an important method to treat food waste because of possibility of energy recovery as methane gas. In this study, the possibility of food waste treatment containing high organic material and low pH in the one stage anaerobic reactor to save cost and time and energy recovery using $CH_{4}$ gas by the hybrid anaerobic reactor (HAR) was measured. The HAR was designed by combing the merits of the anaerobic filter (AF) to minimize the microorganism shock when food waste of very low pH was injected and up-flow anaerobic sludge blanket (UASB) to prevent from plugging and channeling phenomena by large suspended solids when semi solids were injected. Granule was packed in the section of HAR. The purpose of the BMP experiment was to measure the amount of methane generated when organic material was resolved under anaerobic conditions, to grasp bio resolution of organic material. Total accumulated methane production per VS amount was $0.471(m^{3}/\cal{kg}\;VS)$. So, the value was about $81.2\%$ of theoretical methane production which was $0.58(m^{3}/\cal{kg}\;VS)$ by elementary analysis and organic matter removal velocity (K) was $0.18(d^{-1})$. From these results, food waste was treated by anaerobic treatment. From this study, $CH_{4}$ generation from food waste (11,398 ton/day) could be estimated. By using an energy conversion factor of Braun's study, $5.97KWh/m^{3}\;CH4,\;60\%\;of\;CH_{4}$ gas generation, the amount of total energy producing food waste is to 6,727MWh/day. It could be confirmed that energy recovery using $CH_{4}$ gas was possible. Above these results, food waste containing organic matters of high concentration could be treated in HRT 30 days under an anaerobic condition, using the hybrid anaerobic reactor and reuse of $CH_{4}$ gas was possible.
The total production of food waste was about 11,398ton/day('03) in Korea. Also, food waste was treated by landfill, incineration, reuse and anaerobic digestion. The method of food waste treatment depended primarily on landfill. However, the method of landfill causing social problems was prevented to treat food waste in the first of January 2005.12) Thus, anaerobic digestion is an important method to treat food waste because of possibility of energy recovery as methane gas. In this study, the possibility of food waste treatment containing high organic material and low pH in the one stage anaerobic reactor to save cost and time and energy recovery using $CH_{4}$ gas by the hybrid anaerobic reactor (HAR) was measured. The HAR was designed by combing the merits of the anaerobic filter (AF) to minimize the microorganism shock when food waste of very low pH was injected and up-flow anaerobic sludge blanket (UASB) to prevent from plugging and channeling phenomena by large suspended solids when semi solids were injected. Granule was packed in the section of HAR. The purpose of the BMP experiment was to measure the amount of methane generated when organic material was resolved under anaerobic conditions, to grasp bio resolution of organic material. Total accumulated methane production per VS amount was $0.471(m^{3}/\cal{kg}\;VS)$. So, the value was about $81.2\%$ of theoretical methane production which was $0.58(m^{3}/\cal{kg}\;VS)$ by elementary analysis and organic matter removal velocity (K) was $0.18(d^{-1})$. From these results, food waste was treated by anaerobic treatment. From this study, $CH_{4}$ generation from food waste (11,398 ton/day) could be estimated. By using an energy conversion factor of Braun's study, $5.97KWh/m^{3}\;CH4,\;60\%\;of\;CH_{4}$ gas generation, the amount of total energy producing food waste is to 6,727MWh/day. It could be confirmed that energy recovery using $CH_{4}$ gas was possible. Above these results, food waste containing organic matters of high concentration could be treated in HRT 30 days under an anaerobic condition, using the hybrid anaerobic reactor and reuse of $CH_{4}$ gas was possible.
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가설 설정
1. Prior to this experiment, we cliecked the proprieties of treating food waste as an influent under anaerobic conditions, through the bio - resolution of an anaerobic treatment. As a result, the total accumulated methane volume of VS volume ratio was 0.
In this study, we explored that the possibility of food waste treatment containing high organic material and measured the possibility of energy recovery using CHi gas by the hybrid anaerobic reactor.
제안 방법
In the operating of the HAR, four steps (Runl, Run2, Run3, Run4) for stabilization were conducted according to the HRT (47.4d, 35.6d, 29.6d and 26d). A granule packed layer was brought in anaerobic digestion of OB beer factory.
In this study, the possibility of food waste treatment containing high organic material and low pH in the one stage anaerobic reactor to save cost and time and energy recovery using CH4 gas by the hybrid anaerobic reactor (HAR) was measured.
The purpose of the BMP experiment was to measure the amount of methane generated when organic material was resolved under anaerobic conditions, to grasp bio resolution of organic material. This experiment involved controlling temperature, pH and nowisliment, in order to promote generation of methane under the good condition of microorganism growth.
대상 데이터
In addition, height was 600mm and outside diameter was 340mm. The material of acryl was 340mm. The matarial of acryl was used.
The HAR, which has the combined merits of AF and UASB, brings high removal efficiencies, can treat various and exchangeable wastewater, and operate in little space at a little cost. This reactor consists of influent parts, a mixer, a packed layer, a reactor and effluent parts. Also, the total v시ume was 62L and net volume was 30L.
이론/모형
This experiment was measured on the basis of standard methods and environmental pollution official methods (Korea). The CODcr concentration was ranged from 750, 000mg/L to 115,000mg/L.
성능/효과
3. The concentration of influent and effluent in Run3 were 357, 283mg/L, 24, 633mg/L and removal efficiency of COD was 93%. The con- centi'ation of influent and effluent SCODcr were 179, 018mg/L, 17, 526mg/L and removal efficiency of SCOD was 90%.
4. The average CH4 gas generation in Run4 was 0.19( m3 CH4/kg CODcr rem) and CH4 generation per CODcr removed was 0.21( m' CH4/kg rem). The value was about 66% of theoretical gas production, which was 0.
5. The influent and effluent concentration and removal efficiency of PO4 P in Run3 were 712mg/L, and removal efficiency was 78%.
6. The influent and effluent concentration of NH3 H in Run3 was 417mg/L and 636mg/L and high effluent concentration was showed.
As shown by the results, it was determined that sulfate in food waste was not a high enough concentration to disturb anaerobic operating. The removal efficiency in Run3 was about 57% and removal efficiency in Run4 was decreased in relation to decreasing HRT.
참고문헌 (22)
Bae Jae Kun, Chae Chong Ho. (1994) 'Research & Development of Food waste Composting Facility' Journal of Environment for management, pp 67
Chae Ei Sow.(1997) 'The final report of facility for Landfill Gas.' Center of Environmental Technology and Research, 9
Cho Jae Kyoung.(1995) 'A Study on the Two Phase Anaerobic Digestion of Food Waste,' Paper of Dr Award. KIST
Choi E. and J. M. Rim.(1991) 'Competition and Inhibition of Sulfate Reducers and Methane Producers in Anaerobic Treatment', Wat. Sci. Technol, Vol. 23, pp.1259 1264
Harada, H., S, Uemura, and K. Momonoi(1994) 'Interaction Between Sulfate Reducing Bacteria and Merhane Producing Bacteria in UASB Reactors Fed With Low Strength Wastes Containing Different Levels of Sulfate' Wat. Res., Vol. 28, pp. 355-367
Helene Fruteau du Laclos and Claude Saint Joly.(1997) 'Anaerobic Digestion of Municipal Wasted Valorga Full Scale Plant in Tilberg, The Netherlands.' Wat Sci. Tech., Vol. 36, No. 6 7, pp. 457
Isa, Z., Grusenmeyer, S. and Verstate(1986) W. Sulphate reduction relative to methane production in high rate anaerobic digestion: Microbiological aspects. Appl. Environ. Microbial., 51, pp. 580 587
Jung Jun Lee. (1982) 'Study on the Auto Control Effect of Anaerobic Digesting Basin ( I )' Technology Review Engineering Reseal Chonnam National University. Volume. 22
Kroeker., E. J., et al., 'Anaerobic Treatment Process Stability', WPCF, Vol. 51, pp 718, 1979
McCarty, P. L (1974) 'Anaerobic Process'. Presented at the Birmingham Short Course on Design Aspects of Biological Treatment. Inter. Assoc, of Water Poll. Res Bimingham, United Kingdom
Ministry of environmental, Korea, Chronology of environment('04)
Ministry of environmental, Waste Treatment Source, Korea('04)
Park Cheal Hwi.(1995) 'Factors Affecting Performance of the UASB Process for the Treatment of Organic Waste.' Paper of Dr. Awade, Seoul Uni., Korea., 2
R.E. Speece, (1996) 'Anaerobic Technology for Industrial wastewaters'. Vanderbilt University
Rintala,J. A. S. S. and Lepistom, (1992) 'Anaerobic Treatment of Thermo mechanical Pulping Whitewater at 35 $70^{\circ}C$ ,' Wat. Res, Vol. 26, pp. 1297
Shin hwang sik(1995) 'A Study on the Anaerobic Digestion of Food waste Using Biodegradability', Journal of Waste in Korea, Volume 10, pp. 35 42
Shin, H. S., M. J. Moon, J. J. Lee. (1994) 'Anaerobic Treat ability of food waste with High Salt Concentration' Proceedings 7th International symp. on Anaerobic Digestion, 23 27 January
Weiland, P., and Rozzi. A.(1991) 'The start up, operation and monitoring of high rate anaerobic treatment systems : discussion report.' Water Science and Technology, Vol. 24, No. 8, pp. 257 277
R.Braun, 'Biogas Methangraung organ-isscher Abfallstoffe.' Springger-Verlag Wien, New York, 1982
Owens, J.M., D.P. Chenoweth, and S.A Svornos, 'Fluorescence Detection of Inhibition in Anaerobic Digestion,' Proc. 7th International Symposia on Anaerobic Digestion South Africa, PP,103. 1994
Isa, Z., Grusenmeyer, S. and Verstate, W. Sulphate reduction relative to methane production in hig rate anaerobic digestion: Microbiological aspects. Appl, Environ. Microbial, 51. pp. 580 587, 1986
Choi. E. and J. M.Rim, 'Competition and Inhibition of Sulfate Reducers and Methane Producers in Anaerobic Treatment,' Wat. Sci. Technol, Vol. 23, pp. 1259 1264, 1991
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