Variations of N concentrations and microbial community in the start-up of anammox using anaerobic heterotrophic sludge: Influence of a long reaction-phase time and comparison of the efficiencies of attached-versus suspended-growth cultures

Chemosphere ◽  
2021 ◽  
pp. 132151
Author(s):  
Tsung-Hsien Huang ◽  
Fang-Tsen Tung ◽  
Guan-Fu Chen ◽  
Wei-Hsiang Chen
Keyword(s):  
Microbial Community ◽  
Reaction Phase ◽  
Phase Time ◽  
Start Up ◽  
Suspended Growth

Effects of alkalinity addition with different strategies on CANON process: start‐up, performance and microbial community

2021 ◽  
Author(s):  
Guangqing Liu ◽  
Xiaohua Zhou ◽  
Huili Liang ◽  
Liming Han ◽  
Zhuangming Qiao ◽  
...  
Keyword(s):  
Microbial Community ◽  
Start Up ◽  
Canon Process

scholarly journals Achieving fast start-up of anammox process by promoting the growth of anammox bacteria with FeS addition

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Chunzhen Zou ◽  
Beibei Guo ◽  
Xuming Zhuang ◽  
Liying Ren ◽  
Shou-Qing Ni ◽  
...  
Keyword(s):  
Microbial Community ◽  
Nitrogen Removal ◽  
Nitrite Reductase ◽  
Removal Rate ◽  
Anammox Bacteria ◽  
Gene Encoding ◽  
Start Up ◽  
Fast Start ◽  
The Difference ◽  
Anammox Process

Abstract The effects of FeS on nitrogen removal performance and microbial community of anammox process were studied. During the start-up period, the removal efficiencies of nitrite and total nitrogen were significantly improved by FeS. The addition of FeS increased the content of iron ions in the reactor and promoted the synthesis of heme c, which was involved in the formation of various enzymes. Compared with the control, the abundance of anammox bacteria in the FeS reactor was increased by 29%, and the expression level of the nirS gene (encoding cd1 type nitrite reductase containing heme) was nearly doubled. The content of nitrite reductase (ammonia-forming) in the community was increased by 26.4%. The difference in functional bacteria and enzyme contents in the microbial community resulted in a difference in nitrogen removal rate (NRR) between the two reactors. High-throughput results indicated that FeS increased the richness and diversity of microbial community and enhanced the metabolic function of the microbial community. The addition of FeS did not change the dominant position of Ca. Kuenenia in both reactors. But the relative abundance of heterotrophic denitrifying bacteria was reduced with FeS, which may be related to the inhibition effect of S2− produced by FeS.

Performance and Microbial Characteristics of a Hybrid Biological Reactor Treating Industrial Wastewater

2012 ◽  
Vol 485 ◽  
pp. 438-441
Author(s):  
Chao Li ◽  
Xian Li Li ◽  
Min Ji ◽  
Yu Kun Ma
Keyword(s):  
Microbial Community ◽  
Industrial Wastewater ◽  
Denitrifying Bacteria ◽  
Nitrifying Bacteria ◽  
Cloning And Sequencing ◽  
Attached Growth ◽  
Microbial Characteristics ◽  
Suspended Growth ◽  
Polymerase Chain

To reveal the succession procedure of microbial community in hybrid biological reactor (HBR), the molecular biological techniques of polymerase chain reaction-denaturing gel gradient electrophoresis (PCR-DGGE), cloning and sequencing and fluorescence in situ hybridization (FISH) were applied. PCR-DGGE results showed that the microbial community accumulated in both suspended-growth and attached-growth biomasses. Proteobacteria was found to be the dominant genera of bacteria in the sludge. Denitrifying bacteria was found accumulated in the biofilms. FISH results showed that there were more nitrifying bacteria in the suspended-growth biomass than the attached-growth biomass, but less denitrifying bacteria in the former biomass.

Fast start-up, performance and microbial community in a pilot-scale anammox reactor seeded with exotic mature granules

2011 ◽  
Vol 102 (3) ◽  
pp. 2448-2454 ◽  
Author(s):  
Shou-Qing Ni ◽  
Bao-Yu Gao ◽  
Chih-Cheng Wang ◽  
Jih-Gaw Lin ◽  
Shihwu Sung
Keyword(s):  
Microbial Community ◽  
Pilot Scale ◽  
Start Up ◽  
Fast Start

scholarly journals Start-up of a spiral periphyton bioreactor (SPR) for removal of COD and the characteristics of the associated microbial community

2015 ◽  
Vol 193 ◽  
pp. 456-462 ◽  
Author(s):  
Haidong Shangguan ◽  
Junzhuo Liu ◽  
Yan Zhu ◽  
Zhengong Tong ◽  
Yonghong Wu
Keyword(s):  
Microbial Community ◽  
Start Up
Sign in / Sign up

Export Citation Format

Share Document