Performance and bacterial community profiles of sequencing batch reactors during long-term exposure to polyethylene terephthalate and polyethylene microplastics

2021 ◽  
pp. 126393
Author(s):  
Qidong Tang ◽  
Minghuo Wu ◽  
Yuelin Zhang ◽  
Jingzhe Li ◽  
Jinxuan Liang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Polyethylene Terephthalate ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

Effects of long-term addition of Cu(II) and Ni(II) on the biochemical properties of aerobic granules in sequencing batch reactors

2010 ◽  
Vol 86 (6) ◽  
pp. 1967-1975 ◽  
Author(s):  
Xin-Hua Wang ◽  
Li-Hong Gai ◽  
Xue-Fei Sun ◽  
Hui-Jun Xie ◽  
Ming-Ming Gao ◽  
...  
Keyword(s):  
Biochemical Properties ◽  
Batch Reactors ◽  
Aerobic Granules ◽  
Sequencing Batch Reactors

scholarly journals Comparison of the bacterial community composition in the granular and the suspended phase of sequencing batch reactors

AMB Express ◽  
2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Enikö Szabó ◽  
Raquel Liébana ◽  
Malte Hermansson ◽  
Oskar Modin ◽  
Frank Persson ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Batch Reactors ◽  
Sequencing Batch Reactors

Effect of sludge discharge positions on steady-state aerobic granules in sequencing batch reactor (SBR)

2012 ◽  
Vol 66 (8) ◽  
pp. 1722-1727 ◽  
Author(s):  
Lin Liu ◽  
Da-Wen Gao ◽  
Hong Liang
Keyword(s):  
Steady State ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Aerobic Granule ◽  
Stable Operation ◽  
Batch Reactors ◽  
Aerobic Granules ◽  
Sequencing Batch Reactors ◽  
Discharge Location

We have investigated the effect of sludge discharge location on the steady-state aerobic granules in sequencing batch reactors (SBRs). Two SBRs were operated concurrently with the same sludge retention time using sludge discharge ports at: (a) the reactor bottom in R1; and (b) the reactor middle-lower level in R2. Results indicate that both reactors could maintain sludge granulation and stable operation, but the two different sludge discharge methods resulted in significantly different aerobic granule characteristics. Over 30 days, the chemical oxygen demand (COD) removal of the two reactors was maintained at similar levels (above 96%), and typical bioflocs were not observed. The average aerobic granule size in R2 was twice that in R1, as settling velocity increased in proportion to size increment. Meanwhile, the production yields of polysaccharide and protein content in R2 were always higher than those in R1. However, due to mass transfer limitations and the presence of anaerobes in the aerobic granule cores, larger granules had a tendency to disintegrate in R2. Thus, we conclude that a sludge discharge port situated at the reactor bottom is beneficial for aerobic granule stability, and enhances the potential for long-term aerobic granule SBR operation.

Effects of 1,1,1-trichloroethane on enzymatic activity and bacterial community in anaerobic microcosm form sequencing batch reactors

Ecotoxicology ◽  
2012 ◽  
Vol 21 (5) ◽  
pp. 1426-1435 ◽  
Author(s):  
Hui Li ◽  
Wei Zhang ◽  
Lu Li ◽  
Yong-Di Liu ◽  
Kuang-Fei Lin ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Enzymatic Activity ◽  
Batch Reactors ◽  
Sequencing Batch Reactors
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