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Bioaugmentation of a biological contact oxidation ditch with indigenous nitrifying bacteria for in situ remediation of nitrogen-rich stream water |
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| Authors: | Jiao Yan Zhao Qingliang Jin Wenbiao Hao Xiaodi You Shijie |
| Institution: | a State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China b Applied Economic Research Institute, Shanxi University of Finance and Economics, Taiyuan 030006, China c Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China d The R&D Center for Sustainable Environmental Biotechnology, Beijing Institute of Civil Engineering and Architecture, Beijing 100044, China |
| Abstract: | In this study, specialized bacteria were domesticated and cultivated with polluted stream water. The bioaugmentation of specialized bacteria would significantly enhance the removal efficiency of TN and NH4+-N from 25.9% to 50.3%, and from 34.5% to 60.1%, respectively. Concomitant increases in the number of microbial communities and the proportion of nitrifying bacteria were also identified by the most probable number (MPN) method. PCR-DGGE profiles revealed that the bacterial community could be successfully enriched and the ammonia-oxidizing bacteria communities were shown predominant by the species of Nitrosomonas. The biological contact oxidation ditch (BCOD) system augmented with specialized bacteria can be a viable alternative for treating polluted stream water to achieve improved nitrogen removal. |
| Keywords: | Bioaugmentation Nitrifying bacteria Biological contact oxidation ditch Nitrogen-rich stream water |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |