Performance evaluation of a lab-scale moving bed biofilm reactor (MBBR) using polyethylene as support material in the treatment of wastewater contaminated with terephthalic acid
Performance evaluation of a lab-scale moving bed biofilm reactor (MBBR) using polyethylene as support material in the treatment of wastewater contaminated with terephthalic acid
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使用聚乙烯作为支撑材料的实验室规模移动床生物膜反应器（MBBR）处理对苯二甲酸污染废水的性能评估
DOI：
10.1016/j.chemosphere.2019.03.186
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发表时间：
2019
期刊：
影响因子：
8.8
通讯作者：
Dong Weiliang
中科院分区：
文献类型：
--
作者：
Liu Jiawei;Zhou Jie;Xu Ning;He Aiyong;Xin Fengxue;Ma Jiangfeng;Fang Yan;Zhang Wenming;Liu Shixun;Jiang Min;Dong Weiliang
高有机负荷的对苯二甲酸（TPA）废水未经处理会造成严重的环境污染。本研究采用实验室规模的移动床生物膜反应器，其中生物量的Delftiasp。WL-3附着在聚丙烯载体元件上，已在25-27 °C下进行TPA生物修复测试。经过短短15天的启动，系统实现了稳定运行。在65 d的运行期内，当有机负荷（OLR）为2.5 kg COD·（m3·d）− 1，水力停留时间为24 h时，COD和TPA的去除率分别保持在68%和76%。另外，扫描电镜（SEM）显示，WL-3生物质在载体表面聚集密度较高，形成了丰富的生物膜，表明聚丙烯载体可以提高降解效率。而未加聚丙烯载体的菌株WL-3对COD和TPA的去除率分别为10%和15%，生物降解能力明显下降。此外，该系统表现出良好的鲁棒性，以不同的OLR和进水基质比，表明其潜在的应用在现场处理含TPA的废水。
Untreated terephthalic acid (TPA) wastewaters with high organic loads will cause severe environmental pollution problems. In this study, a lab-scale moving bed biofilm reactor, where biomass ofDelftiasp. WL-3 is attached to polypropylene carrier elements, has been tested for TPA bioremediation at 25–27 °C. The system achieved stable operation after a short 15-day start-up period. During the operation period of 65 days, stable chemical oxygen demand (COD) and TPA removal efficiencies of 68% and 76% were maintained with an organic load rate (OLR) and hydraulic retention time of 2.5 kg COD·(m3·d)−1and 24 h, respectively. In addition, the Scanning Electron Microscope (SEM) showed that high-densities of WL-3 biomass accumulated on the surface of the carrier and formed a rich biofilm, indicating polypropylene carrier can improve the degradation efficiency. On the contrary, the biodegradation ability of stain WL-3 without the polypropylene carrier declined significantly with removal efficiencies of 10% and 15% for COD and TPA. Furthermore, the system exhibited excellent robustness to different OLR and influent matrix ratios, indicating its potential for applications in the treatment of TPA-containment wastewater in the field.