scholarly journals Biodegradation of di-n-butyl phthalate in sequencing batch reactor bioaugmented with Micrococcus sp. and the bacterial community analysis

2014 ◽  
Vol 12 (9) ◽  
pp. 2819-2828 ◽  
Author(s):  
J. Hu ◽  
Q. Yang ◽  
J. L. Wang
Keyword(s):  
Bacterial Community ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Community Analysis ◽  
Butyl Phthalate

Nitrogen removal, sludge activity and bacterial community in a sequencing batch reactor at different ciprofloxacin and ibuprofen concentrations

2021 ◽  
pp. 101814
Author(s):  
Shengyu Yuan ◽  
Zichao Wang ◽  
Yueyue Wang ◽  
Huan Yang ◽  
Youtao Song ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Sludge Activity

scholarly journals Dynamic changes of bacterial community in activated sludge with pressurized aeration in a sequencing batch reactor

2017 ◽  
Vol 75 (11) ◽  
pp. 2639-2648 ◽  
Author(s):  
Yong Zhang ◽  
Wei-Li Jiang ◽  
Yang Qin ◽  
Guo-Xiang Wang ◽  
Rui-Xiao Xu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Atmospheric Environment ◽  
Synthetic Wastewater ◽  
Control Group ◽  
Feed Water ◽  
Moderate Pressure

This study aimed to investigate the organic removal efficiency and microbial population dynamics in activated sludge with pressurized aeration. The activated sludge was fed with synthetic wastewater composed of simple carbon source to avoid the effect of complex components on microbial communities. The pressurized acclimation process was conducted in a bench-scale sequencing batch reactor (SBR) under 0.3 MPa gage pressure. Another SBR was running in atmospheric environment as a control reactor, with the same operation parameters except for the pressure. Bacterial diversity was investigated by Illumina sequencing technology. The results showed that the total organic carbon removal efficiency of the pressurized reactor was significantly higher, while the mixed liquor suspended solids concentrations were much lower than those of the control reactor. Moderate pressure of 0.3 MPa had little effect on Alpha-diversity of bacterial communities due to the similar running conditions, e.g., feed water, solids retention time (SRT) and the cyclic change of dissolved oxygen (DO) concentrations. Although the relative percentage of the bacterial community changed among samples, there was no major change of predominant bacterial populations between the pressurized group and the control group. Pressurized aeration would have a far-reaching impact on microbial community in activated sludge when treating wastewaters being unfavorable to the dissolution of oxygen.

Effects of CeO2 nanoparticles on system performance and bacterial community dynamics in a sequencing batch reactor

2015 ◽  
Vol 73 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Guanglei Qiu ◽  
Sin-Yi Neo ◽  
Yen-Peng Ting
Keyword(s):  
Bacterial Community ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
System Performance ◽  
Sequencing Batch Reactor ◽  
Community Dynamics ◽  
Batch Reactor ◽  
Ceo2 Nanoparticles ◽  
Continuous Exposure ◽  
Bacterial Community Dynamics

The effects of CeO2 nanoparticles (NPs) on the system performance and the bacterial community dynamics in a sequencing batch reactor (SBR) were investigated, along with the fate and removal of CeO2 NPs within the SBR. Significant impact was observed on nitrification; NH4+-N removal efficiency decreased from almost 100% to around 70% after 6 days of continuous exposure to 1.0 mg/L of CeO2 NPs, followed by a gradual recovery until a stable value of around 90% after 20 days. Additionally, CeO2 NPs also led to a significant increase in the protein content in the soluble microbial products, showing the disruptive effects of CeO2 NPs on the extracellular polymeric substance matrix and related activated sludge structure. Denaturing gradient gel electrophoresis analysis showed remarkable changes in the bacterial community structure in the activated sludge after exposure to CeO2 NPs. CeO2 NPs were effectively removed in the SBR mainly via sorption onto the sludge. However, the removal efficiency decreased from 95 to 80% over 30 days. Mass balance evaluation showed that up to 50% of the NPs were accumulated within the activated sludge and were removed with the waste sludge.

scholarly journals Removal of tetracycline by aerobic granular sludge and its bacterial community dynamics in SBR

RSC Advances ◽  
2018 ◽  
Vol 8 (33) ◽  
pp. 18284-18293 ◽  
Author(s):  
Xiaochun Wang ◽  
Zhonglin Chen ◽  
Jing Kang ◽  
Xia Zhao ◽  
Jimin Shen
Keyword(s):  
Bacterial Community ◽  
Sequencing Batch Reactor ◽  
Community Dynamics ◽  
Batch Reactor ◽  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Microbial Succession ◽  
Bacterial Community Dynamics

A lab-scale aerobic granular sludge sequencing batch reactor was introduced to explore the performance, formation and microbial succession of granular sludge for effectively removing tetracycline.

scholarly journals Analysis of the bacterial community inhabiting an aerobic thermophilic sequencing batch reactor (AT-SBR) treating swine waste

2005 ◽  
Vol 67 (2) ◽  
pp. 287-287 ◽  
Author(s):  
P. Juteau ◽  
D. Tremblay ◽  
R. Villemur ◽  
J.-G. Bisaillon ◽  
R. Beaudet
Keyword(s):  
Bacterial Community ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Swine Waste

Treatment of high salinity phenol-laden wastewater using a sequencing batch reactor containing halophilic bacterial community

2014 ◽  
Vol 93 ◽  
pp. 138-144 ◽  
Author(s):  
Yu-Feng Wang ◽  
Xiao-Li Wang ◽  
Hui Li ◽  
Kuang-Fei Lin ◽  
Ping Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Sequencing Batch Reactor ◽  
High Salinity ◽  
Batch Reactor

Evaluation of denitrification performance and bacterial community of a sequencing batch reactor under intermittent aeration

2019 ◽  
Vol 55 (2) ◽  
pp. 179-192
Author(s):  
Ji Hyeon Kwon ◽  
Hyung-Joo Park ◽  
Yun-Yeong Lee ◽  
Kyung-Suk Cho
Keyword(s):  
Bacterial Community ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Intermittent Aeration
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