Isolation and degradation characteristics of bacteria in black and odorous water
| Autor: | Gangcai Chen, Yunyi Li, Jiangyu Ye, Kelin Tao, Jianxia Yang, Yuan Hao, Liping Huang, Yuchun Xiao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
TC401-506
Chromatography biology Water supply for domestic and industrial purposes biochemical method 0208 environmental biotechnology in-situ remediation 02 engineering and technology 010501 environmental sciences biology.organism_classification Isolation (microbiology) 01 natural sciences 020801 environmental engineering compound bacterium agent River lake and water-supply engineering (General) black-odorous water Environmental science Degradation (geology) TD201-500 Bacteria 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Water Supply, Vol 21, Iss 5, Pp 2249-2260 (2021) |
| ISSN: | 1607-0798 1606-9749 |
| Popis: | Bioremediation is one of the treatment technologies for the black-odorous water, and obtaining functional bacteria is the key step to its success. In this study, a number of highly efficient pollutant degrading strains were isolated from the sediment of black-odorous river, and were identified by phenotypic and phylogenetic analysis. The composite bacterial agent J1 was mixed by strains A1, A2, A5 and A7, with a volume ratio of 4:4:2:1. And the final compound bacteria injected into black-odorous water were composed of J1 and NS3, with the volume ratio of 1:1. Optimized degradation conditions of compound bacterium agent were as follows: pH 7.5, DO 2.5 mg/L, temperature 30 °C. Under optimized conditions, add 1% by volume to the black-odorous water for a 50-day experimental operation. Finally, the overlying water ammonia nitrogen, chemical oxygen demand (COD), and total phosphorus has been significantly degraded. The research is expected to contribute to the use of bioremediation methods to repair black-odorous water, and the application of isolates can be carried out in situ for water types similar to pollute waterways. HIGHLIGHTS Controllable functional microbes for characteristic pollutants were obtained.; Physiological, biochemical and degradation characteristics of microbial isolates were explored.; A basic framework of in-situ bioremediation of black-odorous water was demonstrated. |
| Databáze: | OpenAIRE |
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