Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China.
Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Key Laboratory of Marine Biotechnology of Zhejiang, Ningbo University, Ningbo 315211, China.
Bioresour Technol. 2018 May;255:22-28. doi: 10.1016/j.biortech.2018.01.106. Epub 2018 Jan 31.
Considering carbon sources are often supplied to satisfy the removal of high nitrogen and refractory pollutants in industrial wastewater, two sequencing batch reactors (SBRs) were used in this study to treat 1.5 ± 0.5 mg/L 4-chlorophenol (4-CP) wastewater containing ammonium nitrogen and phosphate with different carbon sources. The favorable removal efficiencies of influent COD, NH-N, PO-P, and 4-CP suggested that the both SBRs were not influenced by supplying dissolved starch and sodium acetate, respectively. The phyla Proteobacteria and Bacteroidetes were dominant in both SBRs, while the dominant phylum Candidatus Saccharibacteria was only existed in SBR with carbon source of dissolved starch. The relative abundance of bacterial communities had significant differences at class, family, and order level in both SBRs. And the mutually dominant genus in both SBRs was only Gemmobacter, which was first found in 4-CP wastewater treatment. The changed extracellular polymeric substances (EPS) were related with microbial communities.
考虑到碳源通常用于满足工业废水中高氮和难降解污染物的去除，本研究采用两个序批式反应器（SBR），分别以溶解淀粉和乙酸钠作为碳源，处理含有氨氮和磷酸盐的 1.5±0.5mg/L 对氯苯酚（4-CP）废水。进水 COD、NH-N、PO-P 和 4-CP 的良好去除效率表明，两个 SBR 分别受溶解淀粉和乙酸钠的影响较小。两个 SBR 中的优势菌门均为变形菌门和拟杆菌门，而优势菌门候选糖菌门仅存在于以溶解淀粉为碳源的 SBR 中。两个 SBR 中的细菌群落在纲、科和目水平上的相对丰度存在显著差异。两个 SBR 中共同占优势的属均为 Gemmobacter，这是首次在 4-CP 废水处理中发现。变化的胞外聚合物（EPS）与微生物群落有关。
