정연규 송경근 2024-01-22T00:37:08Z 2024-01-22T00:37:08Z 2022-01-10 1990-01 https://pubs.kist.re.kr/handle/201004/147223 혐기성 소화에 의한 폐 활성슬러지 처리에 관한 연구 Article 3 Journal of the Engineering Research Institute, v.v. 22, no.no. 1, pp.7 - 12 Journal of the Engineering Research Institute v. 22 no. 1 7 12 anaerobic digestion waste activated sludge