Isolation and characterization of heterotrophic nitrifying bacteria and the removal of pollutants in black and malodorous water bodies

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhang, Wenjun^1 ; Wei, Wei^2 ; Xing, Yan^1 ; Zhao, Yongzhi^2 ; Guo, Xiaoying^2 ; Liu, Mengyan^2 ; Cui, Qi^2 ; Huang, Junshe^2 ; Yao, Xiaohan^2

College of Architecture and Urban Planning, Henan University of Urban Construction, Ping Dingshan

467036, China^1

College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin

300384, China^2

关键词: Ammonia nitrogen;    Bacterial source;    Functional bacteria;    Heterotrophic nitrification bacteria;    Isolation and characterization;    Nitrifying bacteria;    Removal rate of cods;    Waterbodies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/5/052029/pdf
DOI  :  10.1088/1755-1315/300/5/052029

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Aiming at the problem of high concentration of COD and NH3-N in black and odorous water bodies, heterotrophic nitrifying bacteria which can remove ammonia nitrogen and organic pollutants were screened out in the laboratory simultaneously. A heterotrophic nitrifying functional group was constructed by using the strategy of bacterial source reorganization ecologically, and the removal effect of heterotrophic nitrifying functional bacteria on organic pollutants and ammonia nitrogen in water was studied. The results showed that the removal rate of ammonia nitrogen in the water was more than 52%, and the removal rate of COD was 57%∼86%. The effect of heterotrophic nitrifying functional bacteria group 1 on the removal of COD and ammonia in water was better, and the removal rate was 76.5% and 54.8%, respectively. The optimum inoculation test showed that the optimum inoculation amount of the heterotrophic nitrification bacteria group 1 was 10 ppm.