Ammonia Oxidizers in a Pilot-Scale Multilayer Rapid Infiltration System for Domestic Wastewater Treatment

被引:18
|
作者
Lian, Yingli [1 ,2 ]
Xu, Meiying [2 ]
Zhong, Yuming [2 ]
Yang, Yongqiang [3 ]
Chen, Fanrong [3 ]
Guo, Jun [2 ]
机构
[1] S China Univ Technol, Sch Biol Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
[2] Guangdong Inst Microbiol, Guangzhou 510070, Guangdong, Peoples R China
[3] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
来源
PLOS ONE | 2014年 / 9卷 / 12期
关键词
GRADIENT GEL-ELECTROPHORESIS; 16S RIBOSOMAL-RNA; NITRITE ACCUMULATION; NITROGEN REMOVAL; ARCHAEA; BACTERIA; SOIL; NITRIFICATION; TEMPERATURE; SEQUENCE;
D O I
10.1371/journal.pone.0114723
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
A pilot-scale multilayer rapid infiltration system (MRIS) for domestic wastewater treatment was established and efficient removal of ammonia and chemical oxygen demand (COD) was achieved in this study. The microbial community composition and abundance of ammonia oxidizers were investigated. Efficient biofilms of ammonia oxidizers in the stationary phase (packing material) was formed successfully in the MRIS without special inoculation. DGGE and phylogenetic analyses revealed that proteobacteria dominated in the MRIS. Relative abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) showed contrary tendency. In the flowing phase (water effluent), AOA diversity was significantly correlated with the concentration of dissolve oxygen (DO), NO3-N and NH3-N. AOB abundance was significantly correlated with the concentration of DO and chemical oxygen demand (COD). NH3-N and COD were identified as the key factors to shape AOB community structure, while no variable significantly correlated with that of AOA. AOA might play an important role in the MRIS. This study could reveal key environmental factors affecting the community composition and abundance of ammonia oxidizers in the MRIS.
引用
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页数:18
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