有氧粒化技术基础应用废水处理
可解决性
The sludge volume index (SVI) of aerobic granules can be lower than 50 ml/g, which is much lower than that of
conventional bioflocs (Liu et al., 2003f; Qin et al., 2004). This implies that from an engineering perspective, the
settleability of sludge can be improved significantly through the formation of aerobic granules so that it can be
settled in a more compact clarifier. The settling velocity of aerobic granules is associated with granule size and
structure and is as high as 30 to 70 m/h. This is comparable with that of the UASB granules, but is at least three
times higher than that of activated sludge flocs (typical settling velocity of around 8 to 10 m/h).
Thus, aerobic granulation can lead to more biomass retention in the reactor and this can enhance the performance
and stability of the reactor.
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