지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The purpose of this study is deduction of optimum condition of HRT and pH that is most important item among all driving factors when operated anaerobic digester by 25℃, and examination about maximum methanogenesis amount of each driving conditions. Decrease of removal efficiency by temperature change did not appear according to result of compare TCOD removal efficiency. In the case of Case 1, experimented doing volume comparison of digester sludge and influent wastewater by 1:1, and doing by 1:2 (digester sludge : influent wastewater) in the case of Case 2. During 28 days which is driving period TCOD removal efficiency was 7-65%, with the exception of opening part period of adaptation most TCOD removal efficiency was more than 50%. Also, when we research SCOD efficiency as standard for pH, the efficiency is enlarged by 25-61% during 9 days which estimate acidogenesis steps. It is appeared that there is no decrease of removal efficiency according to temperature reduction by maximum 80% of SCOD removal efficiency at 25℃ of reactor. The removal efficiency of TCOD and SCOD, it was more than 50% according to change by more than pH 7, and this is not affected big impact by loading rate. During driving period, produced gas quantity was 20,850㎖. Result in convert gas production into COD concentration utilizing Eq.1-1 by methane and CO2 fraction, it was 11,914 mg/L, and this mean that about 86.6%of gas is converted among total removal COD.
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