期刊
BIORESOURCE TECHNOLOGY
卷 183, 期 -, 页码 25-32出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.02.022
关键词
Nutrients removal; Heterotrophic-aerobic nitrogen removal bacteria; Bioaugmentation; Municipal wastewater treatment; 16S rRNA gene libarary
资金
- National Natural Science Foundation of China [51208007]
- Specialized Research Fund for the Doctoral Program of Higher Education [201200011 20101]
- Guangzhou Scientific and Technologic Project for Water Service [GZSK-FW-1201]
PCN bacteria capable of heterotrophic-aerobic nitrogen removal was successfully applied for bioaugmented treatment of municipal wastewater in a pilot-scale SBR. At an appropriate COD/N ratio of 8, the bioaugmentation system exhibited stable and excellent carbon and nutrients removal, the averaged effluent concentrations of COD, NH4+-N, TN and TP were 20.6, 0.69, 14.1 and 0.40 mg/L, respectively, which could meet the first class requirement of the National Municipal Wastewater Discharge Standards of China (COD < 50 mg/L, TN < 15 mg/L, TP < 0.5 mg/L). Clone library and real-time PCR analysis revealed that the introduced bacteria greatly improved the structure of original microbial community and facilitated their aerobic nutrients removal capacities. The proposed emerging technology was shown to be an alternative technology to establish new wastewater treatment systems and upgrade or retrofit conventional systems from secondary-level to tertiary-level. (C) 2015 Elsevier Ltd. All rights reserved.
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