Abstract：An enrichment culture of dissimilatory iron reduction by dosing different Fe(III) sources at constant temperature under facultative/strictly anaerobic condition was investigated. The source of iron-reducing bacteria retrieved from the activated sludge of SBBR reactor. The ability of dissimilatory Fe(III) reduction and the phosphorous removal efficiency under different conditions were compared. The results showed there was consistency in the Fe(III) reduction ability of different conditions, followed by Fe(OH)3>iron oxide scale>green ore>red ore, but strictly anaerobic showed better. While the phosphorus removal efficiency was positively related to produced Fe(II) concentration. At the 7d of enrichment culture, the concentration of phosphate at Fe(OH)3 and iron oxide scale systems decreased below 2mg/L, and ultimately to 0.5mg/L. Bonding mechanism of phosphorous removal using dissimilatory Fe(III) reduction, its main role of the precipitation removal by IRB rather than surface adsorption of Fe(III) source was proved.
王亚娥, 冯娟娟, 李杰. 不同Fe(III)对活性污泥异化铁还原及除磷影响研究[J]. 中国环境科学, 2013, 33(6): 993-998.
WANG Ya-E, FENG Juan-Juan, LI Jie. Phosphorous removal using dissimilatory reduction of different Fe(III) in activated sludge. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(6): 993-998.
