Influence of carbon source and temperature on the denitrifying phosphorus removal process

2007 ◽  
Vol 1 (2) ◽  
pp. 226-232
Author(s):  
Yayi Wang ◽  
Shuying Wang ◽  
Yongzhen Peng ◽  
Guibing Zhu ◽  
Yunfang Ling
Keyword(s):  
Carbon Source ◽  
Phosphorus Removal ◽  
Denitrifying Phosphorus Removal ◽  
Removal Process

scholarly journals Nitrous oxide generation in denitrifying phosphorus removal process: main causes and control measures

2013 ◽  
Vol 20 (8) ◽  
pp. 5353-5360 ◽  
Author(s):  
Cong Li ◽  
Jian Zhang ◽  
Shuang Liang ◽  
Huu Hao Ngo ◽  
Wenshan Guo ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Phosphorus Removal ◽  
Control Measures ◽  
Denitrifying Phosphorus Removal ◽  
Removal Process ◽  
And Control

Effect of Internal Recycle Ratio on the Phosphorus Removal Efficiency of Anaerobic/Anoxic/Oxic (A2/O) to Low Concentration of Organic Substance Wastewater

2011 ◽  
Vol 393-395 ◽  
pp. 688-691
Author(s):  
Ning Wang ◽  
Ying He Jiang ◽  
Bo Fu Li
Keyword(s):  
Carbon Source ◽  
Organic Substance ◽  
Phosphorus Removal ◽  
Pilot Scale ◽  
Biological Phosphorus Removal ◽  
High Concentration ◽  
Denitrifying Phosphorus Removal ◽  
Low Level ◽  
Recycle Ratio ◽  
Biological Phosphorus

In the pilot-scale plant, the effect of internal recycle ratios (300%, 200%, 100%, and 0%) on the biological phosphorus removal was represented. The denitrifying phosphorus removal in anoxic tank was improved with low internal recycle, under the inhibition of high concentration of NOx-N. To low level strength wastewater (average COD 185.6 mg/L, average BOD 115.2 mg/L), the low level carbon source maintained the relatively steady phosphorus removal rates.

Effects of injection of acetic acid and propionic acid for total phosphorus removal at high temperature in enhanced biological phosphorus removal process

2014 ◽  
Vol 69 (10) ◽  
pp. 2023-2028 ◽  
Author(s):  
C. Y. Ki ◽  
K. H. Kwon ◽  
S. W. Kim ◽  
K. S. Min ◽  
T. U. Lee ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Source ◽  
Removal Efficiency ◽  
Total Phosphorus ◽  
Phosphorus Removal ◽  
Treatment Plant ◽  
Biological Phosphorus Removal ◽  
External Carbon Source ◽  
Removal Process ◽  
Biological Phosphorus

In summer, wastewater treatment plant total phosphorus (TP) removal efficiency is low in South Korea. The reason is because of high temperatures or significant fluctuation of inflow characteristics caused by frequent rainfall. Hence, this study tried to raise TP removal efficiency by injecting fixed external carbon sources in real sewage. Polyphosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) compete to occupy microorganisms at high temperature. Propionate is known to restrain GAOs. Thus, acetate and propionate were chosen as the external carbon source in this study to find out the suitable volume and ratio of carbon source which ensured the dominance of PAOs. An external carbon source was supplied in the anaerobic reactor of the biological phosphorus removal process at high temperature (above 25 °C). TP removal efficiency was improved by injecting an external carbon source compared to that without an external carbon source. Also, it remained relatively stable when injecting an external carbon source, despite the variation in temperature. TP removal efficiency was the highest when injecting acetate and propionate in the proportion of 2:1 (total concentration as chemical oxygen demand (COD) is 12 mg/L in influent).

Positive role of nitrite as electron acceptor on anoxic denitrifying phosphorus removal process

2007 ◽  
Vol 52 (16) ◽  
pp. 2179-2183 ◽  
Author(s):  
RongXin Huang ◽  
Dong Li ◽  
XiangKun Li ◽  
LinLin Bao ◽  
AnXi Jiang ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Phosphorus Removal ◽  
Denitrifying Phosphorus Removal ◽  
Positive Role ◽  
Removal Process
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