Fe3+存在下溶解氧浓度对活性污泥处理制浆中段废水的影响

摘要

研究了Fe3+存在下,溶解氧(DO)浓度对活性污泥系统处理制浆中段废水的影响,并以不加Fe3+的系统作为对照.DO浓度在15~25 mg·L-1范围内,加铁组和空白组COD和UV-254去除率均较高,加铁组基本优于空白组;DO浓度在0.5~1.0mg·L-1时,加铁组处理效果明显优于空白组.在所实验的DO浓度范围,加铁组脱氢酶活性、污泥絮凝性能均优于空白组.%Effect of DO concentration on treatment of pulping middle-stage effluent by aerobic activated sludge in the presence of Fe3+was studied, with sludge without Fe3+ as blank control.COD and UV-254 removal efficiency in both groups achieved high when the concentration of DO was 1.5-2.5 mg ·L-1 but the basic iron group is better than the blank group.The present of Fe3+ enhanced the treatment effect, especially when the concentration of DO was 0.5-1.0mg·L-1,the improving effect was more obvious.The dehydrogenase concentration and the flocculation ability of the sludge were also studied.Compared to the blank control, both the activity and flocculation ability of the sludge with Fe3+ were better, and the DO concentration was in the range test.