폐기왓장과 황산염 환원 미생물을 이용한 산성 광산 폐수 처리

• Published in: 한국수처리학회지, 18(6) pp. 97 - 103
• Main Authors: 김홍태, 이태룡, 이영도, 김광덕, 조영탁, 김영태
• Format: Journal Article
• Language: Korean
• Published: 한국수처리학회 30.12.2010
• Subjects: 토목공학
• ISSN: 1225-7192; 2289-0076

The removal of heavy metals such as Fe, Mn, Zn, Pb, Cu, and Cr from the acid mine drainage (AMD) with wasted tiles and sulfate reducing bacteria (SRB) was investigated. NaHCO3 in phase 1 and the waste tiles in phase 2 were used to adjust pH of AMD to neutral and weak base in the first reactor and to remove some heavy metals, followed by anaerobic reactor containing SRB to additionally remove them. The HRT was 3 days in phase 1 and 2 days in phase 2. The pH adjustment in phase 1 and 2 was compared each other. The pH increased from 3 to 5 in phase 1 and 2, indicating the wasted tiles (phase 2) was as effective in pH increase as NaHCO3 (phase 1). The removal efficiencies of Fe, Mn, Zn, Pb, Cu and Cr in phase 1 were 80, 30, 60, 61, 44 and 40%, respectively, and 90, 40, 70, 80, 62 and 45% in phase 2, respectively, indicating higher removal efficiencies of heavy metals in phase 2 than those in phase 1. In addition, Fe, Mn, Cr and Cu are removed with higher efficiencies in pH 5∼7 compared to those in pH 7∼8, although some heavy metals were easily to be precipitated at higher pH. It indicates that the heavy metal removal by SRB might be dominant to the removal of the heavy metals at low pH. The removal of heavy metals such as Fe, Mn, Zn, Pb, Cu, and Cr from the acid mine drainage (AMD) with wasted tiles and sulfate reducing bacteria (SRB) was investigated. NaHCO3 in phase 1 and the waste tiles in phase 2 were used to adjust pH of AMD to neutral and weak base in the first reactor and to remove some heavy metals, followed by anaerobic reactor containing SRB to additionally remove them. The HRT was 3 days in phase 1 and 2 days in phase 2. The pH adjustment in phase 1 and 2 was compared each other. The pH increased from 3 to 5 in phase 1 and 2, indicating the wasted tiles (phase 2) was as effective in pH increase as NaHCO3 (phase 1). The removal efficiencies of Fe, Mn, Zn, Pb, Cu and Cr in phase 1 were 80, 30, 60, 61, 44 and 40%, respectively, and 90, 40, 70, 80, 62 and 45% in phase 2, respectively, indicating higher removal efficiencies of heavy metals in phase 2 than those in phase 1. In addition, Fe, Mn, Cr and Cu are removed with higher efficiencies in pH 5∼7 compared to those in pH 7∼8, although some heavy metals were easily to be precipitated at higher pH. It indicates that the heavy metal removal by SRB might be dominant to the removal of the heavy metals at low pH. KCI Citation Count: 1