Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Department of Architecture and Environment, Shenzhen Polytechnic College, Shenzhen 518055, Guangdong, China.
Bioresour Technol. 2020 Mar;300:122595. doi: 10.1016/j.biortech.2019.122595. Epub 2019 Dec 13.
In order to explore the treatment efficiency of optoelectronic wastewater and pollutant degradation mechanism of full-scale two-stage AO process, 160 d monitoring was conducted in this study. The results showed that the two-stage AO process owned relatively stable nitrogen and organic matter removal performance. The average concentration of COD, NH-N, and TN in effluent was 54, 3.78 and 13.77 mg L, respectively, and the removal rate was over 80%. The results of high-throughput sequencing demonstrated that the dominant microorganism was Proteobacteria, Bacteroidetes, Firmicutes, Chlorofeli, and Acidobacteria, and differences of interaction networks exited between aerobic and anoxic units. Meanwhile, the microorganism metabolism in aerobic units was significantly different from that in anoxic unit, and the metabolism of the microbial community for treating optoelectronic wastewater was significantly different from that for treating urban domestic sewage.
为了探索光电废水的处理效率和全流程两级 AO 工艺的污染物降解机制，本研究进行了 160d 的监测。结果表明，两级 AO 工艺具有相对稳定的氮和有机物去除性能。出水 COD、NH-N 和 TN 的平均浓度分别为 54、3.78 和 13.77mg/L，去除率均在 80%以上。高通量测序结果表明，优势微生物为 Proteobacteria、Bacteroidetes、Firmicutes、Chlorofeli 和 Acidobacteria，好氧单元和缺氧单元之间存在着不同的相互作用网络。同时，好氧单元中的微生物代谢与缺氧单元有显著差异，光电废水处理微生物群落的代谢与城市生活污水处理的代谢也有显著差异。
