Performance of a periodic anaerobic baffled reactor fed on chinese traditional medicine industrial wastewater
Performance of a periodic anaerobic baffled reactor fed on chinese traditional medicine industrial wastewater
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DOI：
10.1016/j.biortech.2008.06.007
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发表时间：
2009-01-01
影响因子：
11.4
通讯作者：
Yuan, Yixing
中科院分区：
文献类型：
--
作者：
Liu, Xiaolei;Ren, Nanqi;Yuan, Yixing
以四室周期厌氧折流板反应器（PABR）为研究对象，在饲料碱度为1000 ~ 1500mg CaCO3/L的条件下，以1、2、4、6 kg COD/(m(3) d)的平均有机负载量（OLR）分别为12、24、24、6 d，按顺时针顺序切换方式连续投料中药工业废水。水力停留时间为2d，切换时间为4d。当平均OLR增加到6 kg COD/(m(3) d)时，各舱间沼气的pH值、化学需氧量（COD）去除率、产气量和甲烷百分比急剧下降的时间与出水挥发性脂肪酸快速积累的时间一致，因此PABR变酸。变性梯度凝胶电泳（DGGE）群落指纹图谱及其聚类分析表明，当PABR不超载时，各室的群落结构倾向于更紧密地联系在一起。(c) 2008 Elsevier Ltd.版权所有。
A four-compartment periodic anaerobic baffled reactor (PABR) was run in a'clockwise sequential' switching manner continuously fed on chinese traditional medicine industrial wastewater under an alkalinity concentration between 1000 and 1500 mg CaCO3/L of the feed with average organic load rate (OLR) at about 1, 2, 4 and 6 kg COD/(m(3) d) for 12, 24, 24 and 6 d, respectively. Hydraulic residence time was 2d, while switching period was 4d. As the average OLR increased to 6 kg COD/(m(3) d), the time of the sharp fall in pH, chemical oxygen demand (COD) removal, gas production and methane percentage of the biogas of all the compartments and the time of rapid volatile fatty acids accumulation in effluent coincided, hence the PABR became sour. Denaturing gradient gel electrophoresis (DGGE) community fingerprints and their cluster analysis revealed that community structures of each compartment tended to be more closely related if the PABR was not overloaded. (c) 2008 Elsevier Ltd. All rights reserved.