증산제를 통한 혐기소화율 개선 및 슬러지 감량 활용방안

Application Plan of Sludge Reduction and Improvement of Ananerobic Digestion Rate Using VFAs from Food Waste

본 연구는 음식물폐기물로부터 얻어진 증산제 용액을 농축슬러지와 함께 혐기소화조의 투입한 결과 혐기소화율 향상 및 슬러지 감량화를 살펴보았다. 혐기소화조에 증산제를 5%정도 농축슬러지와 함께 투입한 소화조의 메탄생성율이 약 2.7배 정도 높게 발생하였으며, 소화조내 TCOD 농도값이 약 2배 이상 높게 나타난 것은 투입된 농축슬러지의 감량화가 빠르게 진행됨을 알 수 있었다. 또한, 투입된 증산제로 인해 메탄생성효율에 크게 기여함을 간접적으로 알 수 있었다.

This study examined the improvement of anaerobic digestion rate and sludge reduction as a result of the addition of anaerobic digestion with thickened sludge and solution of VFAs obtained from food waste. The methane production rate of the digestion system was 2.21 times higher when anaerobic digestion reactor injected into anaerobes with VFAs from food wastes of 5 percent. Also, The reduction of the amount of concentrated sludge injected will proceed rapidly because of the TCOD concentration in the digestion reactor was more than twice higher. Indirectly it was shown that the increased production system contributed significantly to the methane production efficiency.