Performance of anaerobic-aerobic MBBR system for treating Fischer-Tropsch-processing wastewater
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摘要: 采用厌氧悬浮填料生物膜反应器工艺对费托合成废水进行处理，考察了高有机负荷条件下系统的运行情况。有机负荷小于31.1g/(L·d)时，COD去除率达97%以上；当有机负荷从39.7g/(L·d)增加至56.3g/(L·d)时，厌氧反应对COD的去除率从88%降至61%。实验结果表明，填料生物膜比悬浮污泥具有更高的活性，MBBR系统具有运行稳定、抗冲击力强的优点。
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关键词:
- 悬浮填料生物膜反应器 /
- 费托合成废水 /
- COD去除率 /
- 生物活性
Abstract: The objective of this paper is to investigate COD removal efficiency of the Fischer-Tropsch-processing wastewater by applying the anaerobic moving-bed biofilm reactor (MBBR). The contribution of the anaerobic MBBR to total COD removal efficiency reached 97% at an organic loading rate (OLR) of 31.1g/(L·d). The COD removal efficiency of the anaerobic system had a slight decrease to 88% even though the feed OLR was increased to 39.7g/(L·d), and gradually decreased to 61% when feed OLR was increased to 56.3g/(L·d). The COD removal results in the anaerobic batch experiments of biofilm and sludge showed that the attached biofilm has higher activity than suspended sludge. The anaerobic MBBR system showed a characteristic of steady performance and resistance ability during the operation period.-
Key words:
- MBBR /
- Fischer-Tropsch /
- COD removal /
- microorganism activity
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