Energy saving in the operation of submerged MBRs by the insertion of baffles and the introduction of granular materials
Energy saving in the operation of submerged MBRs by the insertion of baffles and the introduction of granular materials
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DOI：
10.1016/j.seppur.2014.11.025
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发表时间：
2015-02
影响因子：
8.6
通讯作者：
Tokihiro Kurita;K. Kimura;Y. Watanabe
中科院分区：
文献类型：
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作者：
Tokihiro Kurita;K. Kimura;Y. Watanabe
膜生物反应器（MBR）并不是一种主流的污水处理技术，主要是因为其运行能耗高。本研究通过在中试折流板膜生物反应器（BMBR）中引入颗粒，研究了膜污染的缓解和曝气的减少。对于颗粒状材料，BMBR可以稳定运行，即使在混合液悬浮液的过滤能力由于低温而相当低的情况下。颗粒剂可使曝气率降低50%以上。然而，我们发现颗粒的引入破坏了部分膜表面。通过调节颗粒与膜表面的接触强度，可以避免这种损伤。
A membrane bioreactor (MBR) is not a mainstream wastewater treatment technology, mainly because the energy consumption in an MBR operation is high. This study investigated the mitigation of membrane fouling and the reduction in aeration through the introduction of granules into a pilot-scale baffled membrane bioreactor (BMBR) used to treat municipal wastewater. With granular materials, the BMBR could be stably operated, even when the filterability of the mixed liquor suspensions was considerably low due to low temperatures. The aeration rate could be reduced by more than 50% with the help of granules. However, it was found that the introduction of granules damaged parts of the membrane surface. The damage might be avoided by adjusting the contact intensity of the granules and the membrane surface.