globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.05.010
Scopus记录号: 2-s2.0-85054430519
论文题名:
In-situ sludge reduction and carbon reuse in an anoxic/oxic process coupled with hydrocyclone breakage
作者: Xu Y.; Fang Y.; Wang Z.; Guo D.; Liu Y.; Huang Y.; Fu P.; Jin J.; Wei C.; Wang H.; Zeng T.
刊名: Water research
ISSN: 18792448
出版年: 2018
卷: 141
起始页码: 135
结束页码: 144
语种: 英语
英文关键词: Activated sludge ; Anoxic−oxic process ; Carbon sources reuse ; Hydrocyclone treatment ; Sludge reduction
Scopus关键词: carbon ; nitrogen ; oxygen ; metabolism ; procedures ; sewage ; water pollutant ; Carbon ; Nitrogen ; Oxygen ; Sewage ; Waste Disposal, Fluid ; Water Pollutants, Chemical
英文摘要: The long-term performance of an anoxic-oxic-hydrocyclone (AOH) process with an in-situ hydrocyclone treatment unit in the mixed liquid return line for sludge reduction and carbon reuse has been observed, in comparison with a conventional anoxic-oxic (AO) process. Three parallel side-stream systems, including one AOH25 system with a 25-mm hydrocyclone, one AOH35 system with a 35-mm hydrocyclone and one AO system, were built and fed with real wastewater for a comparative study in a wastewater treatment plant. The results demonstrate that the hydrocyclone in the AOH process was able to break macro-flocs into smaller flocs. And the desorption of the extracellular polymeric substance from return activated sludge (AS) leaded to an average increase of 62.97% and 36.36% in SCOD in the AOH25 and AOH35 system, respectively. In addition, shear forces, centrifugal forces of revolution and flocs' rotation in the hydrocyclone were proposed to be the main influence mechanism of hydrocyclone treatment on AS properties. Compared with the AO process, the SCOD concentration in the effluent of the AOH processes presented a decrease of 12.0 mg/L and the TN was reduced by 21.50% owing to the released carbon sources reuse. Moreover, the sludge production was reduced by 36.81% and 35.92% in the AOH25 and AOH35 process, respectively. By contrast, the AOH25 system was better than the AOH35 system. Copyright © 2018 Elsevier Ltd. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112672
Appears in Collections:气候减缓与适应

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作者单位: National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai, 200237, PR China; Sichuan Engineering Laboratory of Resource Utilization of Mine Tailings, Sichuan University of Science & Engineering, Sichuan, 643000, PR China; School of Space and Environment, Beijing University of Aeronautics and Astronautics, Beijing, 100191, PR China; National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai, 200237, China; National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology, Shanghai, 200237, China; Sichuan Engineering Laboratory of Resource Utilization of Mine Tailings, Sichuan University of Science & EngineeringSichuan 643000, China

Recommended Citation:
Xu Y.,Fang Y.,Wang Z.,et al. In-situ sludge reduction and carbon reuse in an anoxic/oxic process coupled with hydrocyclone breakage[J]. Water research,2018-01-01,141
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