好氧颗粒污泥在UASB出水深度处理中的应用。

Application of aerobic granular sludge in polishing the UASB effluent.

作者信息

Zhang L L, Zhang B, Huang Y F, Cai W M

机构信息

School of Environmental Science and Engineering, Shanghai Jiaotong University, People's Republic China.

出版信息

Environ Technol. 2005 Dec;26(12):1327-34. doi: 10.1080/09593332608618611.

DOI:10.1080/09593332608618611

PMID:16372567

Abstract

Stable aerobic granules were successfully developed in a sequencing batch reactor (SBR) fed with glucose and sodium acetate as the main carbon sources, and then they were acclimatized to polish the effluent from an up-flow anaerobic sludge blanket (UASB) reactor. It was found that more than 95% chemical oxygen demand (COD) and 85% suspended solids (SS) in the UASB effluent could be removed by an aerobic granular SBR as a post treatment unit. The performance of the SBR was stable over the whole experimental period. At an organic loading rate (OLR) of 4.5 to 5.4 g l(-1) d(-1), the acclimatized aerobic granules had an average diameter of 3.5 to 6.0 mm and a minimal settling velocity of 72 m h(-1). The biomass concentration in the SBR was as high as 8.4 g (dry weight) l(-1). This study showed for the first time that aerobic granular sludge in SBR would be an effective means to polish the effluent from UASB reactor.

摘要

在以葡萄糖和醋酸钠作为主要碳源的序批式反应器（SBR）中成功培养出了稳定的好氧颗粒，然后使其适应处理上流式厌氧污泥床（UASB）反应器的出水。结果发现，作为后处理单元的好氧颗粒SBR能够去除UASB出水中超过95%的化学需氧量（COD）和85%的悬浮固体（SS）。在整个实验期间，SBR的性能保持稳定。在有机负荷率（OLR）为4.5至5.4 g l(-1) d(-1)的情况下，驯化后的好氧颗粒平均直径为3.5至6.0 mm，最小沉降速度为72 m h(-1)。SBR中的生物量浓度高达8.4 g（干重）l(-1)。该研究首次表明，SBR中的好氧颗粒污泥是处理UASB反应器出水的有效方法。