Contaminants conversion processes and removal by aerobic granular sludge at low temperature

To deeply understand the performance of denitrifying phosphorus removal by aerobic granular sludge at low temperature, an aerobic granular sludge sequencing batch reactor had been operated at 10±1°C. The results showed that the PHAs components synthesized by phosphorus accumulating organisms (PAOs) in granule sludge were affected by different types of carbon source in anaerobic period, and the release and uptake of phosphate were also influenced. It was indicated that the increased ratio of PHV to PHAs led to the increase of the utilization efficiency of nitrate by denitrification PAOs. When initial COD concentration in anaerobic period was lower than 300mg/L, it can effectively keep organic substrates from flowing into the following anoxic period which influenced the efficiency of denitrifying phosphorus removal. Inhibition of nitrite to denitrifying phosphorus removal was decreased due to biology film growth manner of aerobic granular sludge. The inhibitory concentration of nitrite to denitrifying PAOs was 60 mg/L.

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Contaminants removal characteristics between floc sludge and aerobic granular sludge in domestic sewage treatment at low temperature

2011 International Symposium on Water Resource and Environmental Protection ◽

10.1109/iswrep.2011.5893270 ◽

2011 ◽

Cited By ~ 1

Author(s):

Shi Wenxin ◽

Wang Shuo ◽

Yi Xuesong ◽

Yu Shuili ◽

Jiang Lihui ◽

...

Keyword(s):

Low Temperature ◽

Sewage Treatment ◽

Granular Sludge ◽

Domestic Sewage ◽

Aerobic Granular Sludge ◽

Contaminants Removal

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Pollutants degradation performance and microbial community structure of aerobic granular sludge systems using inoculums adapted at mild and low temperature

Chemosphere ◽

10.1016/j.chemosphere.2018.04.062 ◽

2018 ◽

Vol 204 ◽

pp. 431-441 ◽

Cited By ~ 13

Author(s):

Barbara Muñoz-Palazon ◽

Chiara Pesciaroli ◽

Alejandro Rodriguez-Sanchez ◽

Jesús Gonzalez-Lopez ◽

Alejandro Gonzalez-Martinez

Keyword(s):

Community Structure ◽

Microbial Community ◽

Low Temperature ◽

Microbial Community Structure ◽

Granular Sludge ◽

Aerobic Granular Sludge

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Performance and microbial community structure of a polar Arctic Circle aerobic granular sludge system operating at low temperature

Bioresource Technology ◽

10.1016/j.biortech.2018.01.147 ◽

2018 ◽

Vol 256 ◽

pp. 22-29 ◽

Cited By ~ 19

Author(s):

Alejandro Gonzalez-Martinez ◽

Barbara Muñoz-Palazon ◽

Paula Maza-Márquez ◽

Alejandro Rodriguez-Sanchez ◽

Jesus Gonzalez-Lopez ◽

...

Keyword(s):

Community Structure ◽

Microbial Community ◽

Low Temperature ◽

Microbial Community Structure ◽

Granular Sludge ◽

Aerobic Granular Sludge ◽

Arctic Circle ◽

System Operating

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Characteristics of Nitrogen Removal in Aerobic Granular Sludge Reactor at Low Temperature

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.295-298.1438 ◽

2013 ◽

Vol 295-298 ◽

pp. 1438-1441

Author(s):

Rui Ling Bao ◽

Lian Qing Xue ◽

Xiao Ju Yan ◽

Shui Li Yu

Keyword(s):

Low Temperature ◽

Phase I ◽

Removal Efficiency ◽

Nitrogen Removal ◽

Sequencing Batch Reactor ◽

Nitrate Concentration ◽

Batch Reactor ◽

Granular Sludge ◽

Aerobic Granular Sludge ◽

Effluent Concentration

An aerobic granular sludge sequencing batch reactor was carried out at low temperature (101oC) to understand the characteristics of nitrogen removal. The results indicated that nitrification via nitrite could be achieved with an average nitrosation rate of 97.7%. Influent C/N ratio was an important factor influencing the accumulation of nitrite in the effluent. In the experinment, the reactor exhibited a higher removal efficiency for COD with the effluent concentration of COD ranged from 88.2% to 91.8%. In phase I which C/N ratio was 20:1, effluent concentration of ammonium was about 12.9mg/L with the removal efficiency of 77.0%. As the C/N ratio was reduced to 15:1 and 10:1, the effluent concentration of ammonium was around 0.5 mg/L. At the same time, nitrite in the effluent reached up to 21.0 mg/L when the influent COD concentration was induced from 1120mg/L to 560 mg/L with C/N ratio induced from 20:1 to 10:1, however nitrate concentration was remained around 0.4 mg/L throughout the whole experinment.

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