【摘要】 为研究搅拌-序批式活性污泥反应器(WSBR)中好氧颗粒污泥的特性,利用WSBR反应器与传统SBR反应器对好氧活性污泥颗粒化的过程进行了比较.结果表明,在添加同量的聚炳烯酰胺(PAM)条件下,具有合理二次流场的WSBR反应器在4d就可见好氧颗粒污泥,而SBR反应器则在第10d才出现好氧颗粒污泥,且WSBR反应器中好氧颗粒污泥的粒径主要分布在0.9～1.5mm之间,污泥体积指数(SVI)稳定在50mL.g-1左右,颗粒污泥比重增加了0.0509,挥发性悬浮固体(VSS)含量达到81.32%,耗氧速率达1.387mg.min-1.g-1(以O2计),污泥含水率为93.23%.从微生物结构来看,WSBR反应器中的好氧颗粒污泥具有紧密的细菌结构,优于SBR反应器中培养好氧颗粒污泥.表明在合理的二次流条件下,利用PAM混凝沉降原理可以快速地形成良好的好氧颗粒污泥.更多还原

【Abstract】 In order to study the characteristics of aerobic granular sludge in a whisk-sequencing batch reactor,WSBR,the granulation effects of aerobic active sludge in the WSBR were compared with the sludge in a traditional SBR. The results indicated that with the same amount of pollyscrylamide,aerobic active sludge was found on 4th day in the WSBR with reasonable secondary flow field,while it was not found in the SBR until the 10th day. Moreover,the diameters of most aerobic active sludge found in WSBR were within the range of 0.9~1.5 mm,SVI was stabilized about of 50 mL·g-1,the specific gravity of granular sludge was increased by 0.0509,MLVSS/MLSS was increased to 81.32%,SOUR reached 1.387 mg·min-1·g-1 and the percentage of water contained in the sludge reached 93.23%. The compact bacteria structure of aerobic granular sludge found in WSBR was much better than that formed in the SBR,which indicated that with reasonable secondary flow field,good aerobic granular sludge could be rapidly formed by applying polyscrylamide coagulation sedimentation theory.更多还原