US EPA

7457291 

Journal Article 

BAF工艺预处理含微囊藻毒素微污染水源的微生物特征 

Zhang, W; Wang, Y; Cai, Q 

2018 

1 

Guocheng Gongcheng Xuebao / Chinese Journal of Process Engineering
ISSN: 1009-606X 

Science Press 

18 

4 

866-871 

Chinese 

10.12034/j.issn.1009-606X.217354 

The microbial characteristics of biodegradation of organic compounds containing nitrogen and microcystin LR (MC-LR) was researched with the biofilm of biological aerated filter (BAF) reactor surface as the research object, by the means of microscopic examination, phospholipid fatty acid (PLFA), high-throughput sequencing and others. The results showed that the microbial community on the biofilm of BAF was extremely rich in the micro-polluted source water of low carbon source, formed the microbial community consists of aerobic bacteria, sulfate reducing bacteria and other bacteria. In the first 2 weeks, the microflora on the biofilm had 17 major genera and 6 species. In the 3 to 4 weeks, the microflora will increase to 43 major genera and 14 species. There also were protists such as nematodes, paramecium and daphnia. The dominant species were Sphaerotilus (2.41%~24.58%), Aeromonas (4.16%~12.59%), Cloacibacterium (1.85%~12.39%), Aquabacterium (1.53%~6.76%), Hydrogenophaga (1.12%~5.9%), Methyloversatilis (0.53%~1.52%), Rhodobacter (0.09%~1.39%), etc. In addition, the content of bacillus increased from the initial 0.16% to 1.97% after the addition of T1 degrading bacteria, which showed that bacillus grew rapidly and became dominant population after adding T1 degrading bacteria, thus enhancing the degradation of MC-LR. © 2018, Science Press. All right reserved. 

Biological aerated filter; Drinking water sources; Microorganism