Author(s)

Chao Li ¹, Zhengyang An ¹, Chang Gao ¹, Teng Cai ¹, Shuying Huang ¹, Xin Jin ¹

Affiliation(s)

¹ College of Biological and Agricultural Sciences, Honghe University, Mengzi, Yunnan, 661199, China

Corresponding Author

Zhengyang An

ABSTRACT

In this paper, the microorganisms collected from the leachate of the landfill drainage outlet of the landfill were separated and purified for many times, and the sterilized and diluted leachate was added and physicochemical treatment as a blank control, and the ammonia nitrogen degradation rate was used as the evaluation index to measure the effect of purified and domesticated strains in treating leachate. After cultivation and screening, the final ammonia nitrogen degradation rates of different strains 3, 4, 7, 9, 10, 12 and 13 were 57.14%, 38.96%, 85.26%, 92.72%, 66.53%, 95.62% and 74.84%, the degradation rate of No. 12 strain was as high as 95.62%, and the lowest degradation rate was 38.96% for No. 4 strain. The research showed that the degradation effects of different strains were different, and strains with good degradation of ammonia nitrogen were screened out. In summary, the microorganisms isolated from the landfill leachate can degrade the ammonia nitrogen present in themselves, thereby reducing the pollution of its water quality, and indirectly or directly affecting the effect of environmental indicators.

KEYWORDS

Ammonia nitrogen degradation rate, microbe, landfill leachate, separation and purification, evolutionary tree

CITE THIS PAPER

Chao Li, Zhengyang An, Chang Gao, Teng Cai, Shuying Huang, Xin Jin, Screening and Characterization of Nitrogen Removal Functional Bacteria in Landfill Leachate. Environment, Resource and Ecology Journal (2023) Vol. 7: 9-20. DOI: http://dx.doi.org/10.23977/erej.2023.070302.

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