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음료제조업 폐수처리슬러지와 음폐수의 병합소화 가능성 연구 KCI 등재

Possibility Study of Anaerobic Co-Digestion on Beverage Wastewater Sludge and Food Waste Leachate

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한국폐기물자원순환학회지 (Journal of Korea Society of Waste Management)
한국폐기물자원순환학회 (Korea Society Of Waste Management)
초록

According to the elementary analysis on organic wastes, the C/N ratio, a major condition for anaerobic digestion, is 5.40 to 9.23, except for food waste leachate (FWL). Defined by Tchobanoglous’ mathematical biogas prediction model, methane gas and biogas productions increased, depending on the mixing rate of FWL. Furthermore, anaerobic digestion both wastewater sludge and food waste leachate based on the right mixing ratio, increases methane gas productions compared to digesting wastewater sludge alone. In other words, co-anaerobic digestion is more likely to realize biogasification than single anaerobic digestion. We mix food waste leachate and wastewater sludge from the dairy and beer manufacturing industry by the proportion of 1 : 9, 3 : 7 and 5 : 5. It turns out that they produced 118, 175 and 223 CH4 mL/g VS in the dairy manufacturing and 176, 233 and 263 CH4 mL/g VS in beer manufacturing of methane gas. The result suggests that as the mixing rate of food waste leachate rises, the methane gas productions increases as well. And more methane gas is made when co-digesting wastewater sludge and food waste leachate based on the mixing ratio, rather than digesting only wastewater sludge alone. Modified Gompertz and Exponential Model describe the BMP test results that show how methane gas are produced from organic waste. According to the test, higher the mixing rate of food waste leachate is, higher the methane gas productions is. The mixing ratio of food waste leachate that produces the largest volume of methane gas is 1 : 9 for the dairy industries and 3 : 7 for brewery. Modified Gompertz model and Exponential model describe the test results very well. The correlation values (R2) that show how the results of model prediction and experiment are close is 0.920 to 0.996.

저자
  • 윤영삼(국립환경과학원 폐자원에너지연구과) | Young-Sam Yoon
  • 강준구(국립환경과학원 폐자원에너지연구과) | Jun-Gu Kang
  • 손준익(국립환경과학원 폐자원에너지연구과) | Jun-Ik Son
  • 김기헌(국립환경과학원 폐자원에너지연구과) | Ki-Heon Kim
  • 이수영(국립환경과학원 폐자원에너지연구과) | Suyoung Lee Corresponding author