Song Qi, Sun Zheng, Chang Yong, Zhang Weifeng, Lv Yingzhi, Wang Jiayi, Sun Fenghao, Ma Yanxue, Li Yuling, Wang Fengbo, Chen Xiaoguang
College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
Bashan Weaving Group Co., Ltd, Zibo 255000, China.
Bioresour Technol. 2021 Jul;332:125108. doi: 10.1016/j.biortech.2021.125108. Epub 2021 Apr 5.
Polyacrylate containing wastewater (PCW) is the typical sewage discharged by the textile industry. It has extremely poor biodegradability, and chemical methods were used conventionally as the only way for treating PCW. This study is demonstrating a novel biological method. In batch experiment monod kinetics was applied to the experimental data, which indicated that anaerobic treatment used for PCW is feasible. The pilot-scale experiment combined a Spiral Symmetry Stream Anaerobic Bioreactor (SSSAB) and an air-lift external circulation vortex enhancement nitrogen removal fluidized bed bioreactor (AFB). The COD and NH-N removal reached up to 95.2% and 96.6%, respectively, which were higher than the value obtained by other chemical methods. High-throughput sequencing analysis indicated that the relative abundance of Proteobacteria, Firmicutes and Bacteroidetes increased, which contribute to the degradation of PCW. Therefore, PCW can be degraded efficiently by using a SSSAB-AFB technique and thus provides an alternative to the chemical methods.
含聚丙烯酸酯废水（PCW）是纺织工业排放的典型污水。其生物降解性极差，传统上化学方法是处理PCW的唯一途径。本研究展示了一种新型生物方法。在批次实验中，将莫诺德动力学应用于实验数据，结果表明用于PCW的厌氧处理是可行的。中试规模实验结合了螺旋对称流厌氧生物反应器（SSSAB）和气升式外循环涡旋强化脱氮流化床生物反应器（AFB）。化学需氧量（COD）和氨氮（NH-N）的去除率分别达到95.2%和96.6%，高于其他化学方法获得的值。高通量测序分析表明，变形菌门、厚壁菌门和拟杆菌门的相对丰度增加，这有助于PCW的降解。因此，使用SSSAB-AFB技术可有效降解PCW，从而为化学方法提供了一种替代方案。
