음식물쓰레기 주입형태에 따른 혐기성소화조의 메탄가스 발생특성에 관한 연구 Study on Production Characteristic of Methane Gas in Anaerobic Digestion Reactor according to Input Type of Food Waste원문보기
본 연구에서는 음식물 쓰레기의 주입형태에 따른 혐기성 소화조의 메탄가스 발생특성에 대해 알아보고자 하였다. 하수슬러지와 음식물 쓰레기를 각각 1:0, 1:0.1, 1:0.3, 1:0.5, 1:1, 1:2의 비율로 혼합소화시킨 반응조에서의 주입 g VS당 메탄가스 발생량은 40mL, 85mL, 62mL, 67mL, 72mL 및 73mL $CH_4/g$$VS_{added}$였다. 음식물 쓰레기의 입경을 raw food, 2~4mm 그리고 2mm이하로 주입하여 혼합소화시킨 반응조에서의 메탄함량이 각각 51.1%, 53.1% 및 50.6%로 나타나 별차이를 보이지는 않았으나, 입경이 작을수록 높은 메탄발생량을 나타내는 것으로 조사되었다. 주입 음식물 쓰레기의 세척여부와 회수에 따른 탄발생량은 음식물 쓰레기를 7~8회 세척한 경우가 세척하지 않은 경우보다 약 11mL $CH_4/g$$VS_{added}$ 많이 발생하였다.
본 연구에서는 음식물 쓰레기의 주입형태에 따른 혐기성 소화조의 메탄가스 발생특성에 대해 알아보고자 하였다. 하수슬러지와 음식물 쓰레기를 각각 1:0, 1:0.1, 1:0.3, 1:0.5, 1:1, 1:2의 비율로 혼합소화시킨 반응조에서의 주입 g VS당 메탄가스 발생량은 40mL, 85mL, 62mL, 67mL, 72mL 및 73mL $CH_4/g$$VS_{added}$였다. 음식물 쓰레기의 입경을 raw food, 2~4mm 그리고 2mm이하로 주입하여 혼합소화시킨 반응조에서의 메탄함량이 각각 51.1%, 53.1% 및 50.6%로 나타나 별차이를 보이지는 않았으나, 입경이 작을수록 높은 메탄발생량을 나타내는 것으로 조사되었다. 주입 음식물 쓰레기의 세척여부와 회수에 따른 탄발생량은 음식물 쓰레기를 7~8회 세척한 경우가 세척하지 않은 경우보다 약 11mL $CH_4/g$$VS_{added}$ 많이 발생하였다.
This study was performed to investigate production characterisitic of methane gas in anaerobic digestion reactor according to input type of food waste. In the production rates of $CH_4$ gas per g $VS_{added}$, reactor R2, R3, R4, R5, and R6 in which sewage sludge and food waste...
This study was performed to investigate production characterisitic of methane gas in anaerobic digestion reactor according to input type of food waste. In the production rates of $CH_4$ gas per g $VS_{added}$, reactor R2, R3, R4, R5, and R6 in which sewage sludge and food waste were combined with mixing ratio of 1:0.1, 1:0.3, 1:0.5, 1:1, and 1:2 showed 85mL, 62mL, 67mL, 72mL, and 73mL $CH_4/g$$VS_{added}$ which were much more than sewage sludge digestion alone. Methane content according to crushing size of food waste respectively showed 51.1%(raw food), 53.1%(2~4mm), and 50.6%(<2mm), In case of methane production according to washing of food waste, R12(7~8 times washing) showed the highest methane production.
This study was performed to investigate production characterisitic of methane gas in anaerobic digestion reactor according to input type of food waste. In the production rates of $CH_4$ gas per g $VS_{added}$, reactor R2, R3, R4, R5, and R6 in which sewage sludge and food waste were combined with mixing ratio of 1:0.1, 1:0.3, 1:0.5, 1:1, and 1:2 showed 85mL, 62mL, 67mL, 72mL, and 73mL $CH_4/g$$VS_{added}$ which were much more than sewage sludge digestion alone. Methane content according to crushing size of food waste respectively showed 51.1%(raw food), 53.1%(2~4mm), and 50.6%(<2mm), In case of methane production according to washing of food waste, R12(7~8 times washing) showed the highest methane production.
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