Fe^(3+)存在下制浆中段废水好氧活性污泥的驯化

Domestication of Aerobic Activated Sludge Using for Washing / Bleaching Effluent Treatment in the Presence of Fe^(3+)

研究了Fe3+存在下处理制浆中段废水的好氧活性污泥的驯化过程。首先通过Fe3+对微生物生长曲线的影响确定Fe3+最佳用量为30 mg/L;然后在Fe3+用量为30 mg/L下,采用制浆中段废水对好氧活性污泥进行驯化,并设置不加Fe3+的空白组对照。结果表明,整个驯化过程中,加Fe3+组CODCr去除率和污染物去除率(以UV-254减少率表示)均高于空白组;驯化结束后,加Fe3+组和空白组CODCr去除率分别达78.2%和76.0%,污染物去除率分别为50.0%和37.7%。通过对脱氢酶活性的分析表明,加Fe3+组活性高于空白组。

Domestication of aerobic activated sludge using for washing / bleaching effluent in the presence of Fe3 ＋was studied. Firstly,the optimal dosage of Fe3＋ was determined as 30 mg / L by the experiment of effect of Fe3＋ on microbial growth curve. Then,the aerobic activated sludge in the reactor was domesticated by washing / bleaching effluent with Fe3＋ dosage of 30 mg / L,another reactor without Fe3＋ was as control. In the entire process of domestication,COD and UV-254 removal efficiencies of the effluent with iron ion were higher than that of the control sample,and COD removal efficiencies of the two effluents were 78. 2% and 76. 0%,UV-254 removal efficiencies were 50. 0% and 37. 7% respectively at the end of domestication. The analysis of the dehydrogenase activity in the reactor with iron ions was higher than that of the control reactor.