1. Studies on Influencing Factors of Heterotrophic Nitrifying Bacteria Treating Black and Odorous Water Bodies.
- Author
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Wei Wei, Mengyan Liu, Wenjun Zhang, Yonhzhi Zhao, Xiaoying Guo, Qi Cui, Junshe Huang, and Xiaohan Yao
- Subjects
NITRIFYING bacteria ,HETEROTROPHIC bacteria ,ORGANIC water pollutants ,NITROGEN in water ,ORGANIC compounds - Abstract
In order to effectively solve the problem of high concentration of COD and ammonia nitrogen in black and odorous water, a heterotrophic nitrifying bacterium A-2 was screened out, which can simultaneously remove ammonia nitrogen and organic pollutants in water. The removal efficiency of the bacterium A-2 to organic pollutants and ammonia nitrogen in water and its influencing factors were investigated. The results showed that the removal rates of COD and ammonia nitrogen by strain A-2 were 89.1% and 53.2% respectively, and environmental factors such as pH value, inoculation amount, temperature and organic matter concentration could affect the removal efficiency of organic pollutants by strain A-2. When pH value was 8, inoculation amount was 2% and temperature was 27 ℃, strain A-2 could remove C from water. The removal rate of COD can reach more than 80%. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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