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미생물 전기화학적 BMP test를 통한 혐기성 소화 유출수의 후처리 효율평가
차지환 ( Jihwan Cha ),천아인 ( Ain Cheon ),양현명 ( Hyeonmyeong Yang ),김민지 ( Minji Kim ),박병창 ( Byeongchang Park ),배종훈 ( Jonghun Bae ),전항배 ( Hangbae Jun ) 한국폐기물자원순환학회 2022 한국폐기물자원순환학회지 Vol.39 No.5
Bio-electrochemical anaerobic digestion (BEAD) is a technology that can improve the methane production of anaerobic digestion (AD) effluent by supplying a small amount of voltage, and its performance has been proven through many studies. However, most studies have used substrates with high biodegradability. In addition, there are few studies on AD effluent, which is difficult to treat due to its low biodegradation rate although it still has a high COD concentration. In this study, the posttreatment potential of AD effluent through BEAD was evaluated through a biochemical methane potential test, and optimal conditions were selected by supplying different voltages. As a result of the experiment, when a voltage of 0.4 V was supplied, the methane yield, coulombic efficiency, and biodegradation rate were the highest, and it was judged that the voltage supply contributed to the decomposition of non-degradable organic matter and rapid hydrogen and methane conversion of organic matter. However, when a voltage of >0.6 V was supplied, the efficiency was decreased, which was considered to be because the activity of microorganisms was inhibited due to the high voltage. Therefore, in this study, the optimum voltage was confirmed to be 0.4 V, and the possibility of the post-treatment of AD effluent through BEAD was confirmed.