好氧颗粒污泥储存后快速恢复活性最优条件的试验研究

Research on the optimal activity recovery conditions of aerobic granular sludge in storage process

主要对储存8周的好氧颗粒污泥进行恢复活性条件的研究,通过正交试验方法确定了运行周期、进水COD、曝气量、沉降时间4个主要因素对好氧颗粒污泥活性恢复的综合作用,同时在此作用下对好氧颗粒污泥的物理性质和对有机物的去除情况进行对比,对试验数据进行多指标试验结果的直观方差分析,确定最优恢复条件,为工程实际的恢复工作提供理论依据。

The activity recovery conditions of aerobic granular sludge that has been stored for 8 weeks are to be studied. Through orthogonal experiments,the integrated effects of the four factors ：operation cycle,influent COD, aeration capacity and settling time, on the activity recovery of aerobic granular sludge are ascertained. Under these conditions, the results of the physical properties of aerobic granular activated sludge and the organism removing rate are compared. Intuitive variance analysis of the results from multi-index test on the experimental data has been per- formed. The optimal activity recovery conditions are ascertained, providing theoretical base for the recovery work of engineering practice.