序批式反应器处理垃圾渗滤液的污泥颗粒化及污染物去除性能研究

Formation and performances of aerobic granules in a sequencing batch reactor treating landfill leachate

应用序批式反应器（SBR）处理垃圾渗滤液,以絮状活性污泥为接种污泥,经过37 d的运行,反应器内出现小粒径颗粒污泥。第50 d,反应器中污泥完全颗粒化。稳定运行期间,反应器内污泥的平均粒径为0.7 mm;SVI5min一直维持在较低的水平（27~47 mL/g）;MLSS基本稳定在3 700~4 500 mg/L;当COD和氨氮的平均进水浓度为2 150 mg/L和312 mg/L时,平均出水浓度分别为540 mg/L和35 mg/L,去除率分别为75%和89%。

By seeding conventional activated sludge,a SBR was applied to treat refractory landfill leachate.Small granules began to appear in the reactor after 37 days operation,and granulation process completed on the 50th day.During the stable operating period,mean sludge size was 0.7 mm;SVI5min was as low as 27~47 mL/g;MLSS stabilized in the range of 3 700~4 500 mg/L;when the average influent concentrations of COD and ammonia nitrogen were 2 150 and 312 mg/L,average effluent values were 540 and 35 mg/L,with the average removal efficiencies of 75% and 89%,respectively.