Impacts of Reaction Time and C/P Ratio on Single Aerobic Phosphorus Removal System
[1]Peng Zhaoxu,Han Wei,Peng Zhiyuan,et al.Impacts of Reaction Time and C/P Ratio on Single Aerobic Phosphorus Removal System[J].Journal of Zhengzhou University (Engineering Science),2018,39(04):46-50.[doi:10.13705/j.issn.1671-6833.2018.01.007]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 04
Page number:
46-50
Column:
Public date:
2018-07-22
- Title:
- Impacts of Reaction Time and C/P Ratio on Single Aerobic Phosphorus Removal System
- CLC:
- -
- Abstract:
- In order to investigate the impact factors of single aerobic phosphorus removal process, sequencing batch reactor (SBR) was applied. Through altering reaction time and influent C/P, variations of PO43--P concentration, poly-β-hydroxybutyrate (PHB), on line parameters such as DO and ORP were investigated. The results showed that, when DO was below 0.6 mg•L-1, stable biological phosphorus removal was existed in single aerobic system. And decrease aeration time properly was helpful to enhance the phosphorus removal effect. The relation between C/P and phosphorus removal was complex, when PO43--P concentration was constant, increase C/P could enhance the processes of phosphorus release and uptake significantly; when carbon source concentration was constant, the effect of increase C/P was limited. The sludge PHB content at the end of feeding period was in proportion to the released phosphorus content, and showed little relation with influent C/P. The variation tendency of ORP could distinctly indicate the phosphorus removal progress, when ORP was below -150mv, significantly phosphorus release would happen. Under low DO condition, the micro-anaerobic environment caused by mass transfer resistance was the key reason for the take place of single biological phosphorus removal.
- References:
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Last Update:
2018-07-26