Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China.
Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China.
J Hazard Mater. 2019 Mar 5;365:483-493. doi: 10.1016/j.jhazmat.2018.11.039. Epub 2018 Nov 13.
In this study, the effects of nutrient and dissolved organic matter removal, stress resistance (DNA methylation), and the algae-bacteria dynamic ratio of algal-bacterial consortia in actual municipal wastewater were investigated. Results indicate that the presence of a Chlorella vulgaris-Bacillus licheniformis consortium had profound effects. The removal rates of total nitrogen, ammonium, orthophosphate phosphorus and chemical oxygen demand were 88.82%, 84.98%, 84.87% and 82.25%, respectively. Protein-like substances, which are difficult to degrade in the natural water environment, were significantly degraded in actual municipal wastewater. Furthermore, the microbial diversity was measured. The algal-bacterial consortium did not disrupt the microbial in-situ diversity of the actual municipal wastewater under suitable conditions. The global nuclear DNA methylation level peaked at 7.80%. These results help to understand the effects of algal-bacterial consortia on nutrient and pollutant removal and adaptability in actual municipal wastewater.
本研究考察了营养物质和溶解有机物去除、抗逆性（DNA 甲基化）以及实际城市废水中藻菌动态比的藻菌共生体的影响。结果表明，存在小球藻-地衣芽孢杆菌共生体具有深远的影响。总氮、氨氮、正磷酸盐磷和化学需氧量的去除率分别为 88.82%、84.98%、84.87%和 82.25%。在实际城市废水中，难以降解的类蛋白物质得到了显著降解。此外，还测量了微生物多样性。在适宜条件下，藻菌共生体并没有破坏实际城市废水中微生物的原位多样性。全球核 DNA 甲基化水平峰值达到 7.80%。这些结果有助于理解藻菌共生体在实际城市废水中对营养物质和污染物去除以及适应性的影响。
