The collaborative effect of Chlorella vulgaris-Bacillus licheniformis consortia on the treatment of municipal water
- Source:
- Journal of hazardous materials 2019 v.365 pp. 483-493
- ISSN:
- 0304-3894
- Subject:
- Chlorella, DNA methylation, ammonium, chemical oxygen demand, municipal wastewater, nuclear genome, organic matter, orthophosphates, phosphorus, pollution control, public water supply, stress tolerance, total nitrogen
- Abstract:
- 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.
- Agid:
- 6236481
- https://doi.org/10.1016/j.jhazmat.2018.11.039