CEBEDEAU, Research and Expertise Center for Water, Allée de la Découverte 11 (B53), Quartier Polytech 1, B-4000 Liège, Belgium.
Laboratory of Food and Environmental Microbiology, Université catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium.
Bioresour Technol. 2016 Dec;221:300-309. doi: 10.1016/j.biortech.2016.09.052. Epub 2016 Sep 14.
In sequencing batch reactors (SBRs) treating dairy wastewaters, the overgrowth of filamentous bacteria is a frequent cause of operational problems. The present study aimed at understanding to what extent the operating conditions of a SBR can be optimized to convert a bulking activated sludge into a well-settling biomass at low aeration velocity. The abundance of filament morphotypes and floc-formers able to store biopolymers were analysed by PCR-DGGE and 16S amplicon sequencing. The results indicated that a combination of an anaerobic-microaerated feeding pattern with a low selective pressure was beneficial to supress filamentous overgrowth and to form aerobic granules, while increasing the efficiency of suspended solid removal. Average removal efficiencies for total chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) were 94±2%, 95±1% and 83±13%, respectively.
在处理乳品废水的序批式反应器（SBR）中，丝状菌过度生长是导致运行问题的常见原因。本研究旨在了解在低曝气速度下，SBR 的运行条件可以在何种程度上进行优化，将膨胀的活性污泥转化为沉降性能良好的生物量。通过 PCR-DGGE 和 16S 扩增子测序分析了丝状形态和能够储存生物聚合物的絮体形成菌的丰度。结果表明，采用厌氧-微曝气进料方式并施加低选择压力有利于抑制丝状菌过度生长并形成好氧颗粒，同时提高悬浮固体去除效率。总化学需氧量（COD）、总氮（TN）和总磷（TP）的平均去除效率分别为 94±2%、95±1%和 83±13%。
Zotero 插件