Two types of mature aerobic granular sludge were respectively cultivated in the same two sequencing batch reactors (SBR) according to different formation mechanisms, using conventional flocculent activated sludge as seeding sludge.The mature aerobic granular sludge cultivated in R1 according to the hypothesis of filamentous bacteria, the SVI (sludge volume index) of the sludge was 35-45 mL/g, and the main diameter distribution ranged 2.0-4.0 mm.At the same time, another kind of the mature aerobic granular sludge was cultivated in R2 reactor according to the hypothesis of extracellular polymeric substance (EPS), the SVI of the sludge was about 30 mL/ g, and the main diameter distribution ranged 1.0-1.6 mm.The results show that after cultivation finishing, the COD removal efficiency of both the reactors is similar ( about 95％ ), but the removal efficiency of TN in R1 is higher than that in R2 ( the former is about 60％ and the latter is about 50％ ).%在2个相同的序批式活性污泥反应器(SBR)中利用不同机理,以絮状活性污泥为接种污泥,培养出了2种性质不同的好氧颗粒污泥.R1反应器利用丝状茵假说,得到SVI值为35～45 mL/g、粒径分布在2.0～4.0 mm之间的好氧颗粒污泥;R2反应器利用胞外多聚物(EPS)假说,得到SVI值为30mug、粒径分布在1.0～1.6mm之间的好氧颗粒污泥.结果表明:两者对污染物有良好的去处效果,COD去除率都达到了95%以上,TN的去除率也分别达到60%和50%.
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