Effects of nitrite on phosphate uptake in anaerobic-oxic process

doi:10.1007/s11783-007-0007-3

Front.Environ.Sci.Eng.

2007, Vol. 1

Issue (1) : 39-42 https://doi.org/10.1007/s11783-007-0007-3

Effects of nitrite on phosphate uptake in anaerobic-oxic process

LI Jie¹, XIONG Biyong², ZHANG Shude³, YANG Hong³, ZHANG Jie⁴

1.College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510641, China; 2.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; 3.Key Lab of Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China; 4.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China;

Download: PDF(357 KB)
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract An anaerobic-oxic (A/O) biological phosphorus removal reactor was operated to study the effect of nitrite on phosphate uptake. The phosphorus uptake profile was determined under different operating conditions. The results indicated that in addition to oxygen and nitrate (DPB_Na, nitrate denitrifying phosphorus removal), to some extent, nitrite could also serve as an electron acceptor to achieve nitrite denitrifying phosphorus removal (DPB_Ni). The quantity and rate of phosphorus uptake of DPB_Ni, however, were evidently lower than that of DPB_Na. The experiment results revealed that nitrite would bring toxic action to phosphate-accumulating organisms (PAOs) when NO₂^--N"e93.7 mg/L. The nitrite existing in the anoxic reactor made no difference to the quantity and rate of denitrifying phosphorus removal, but it could reduce the consumption of nitrate. Moreover, the data showed that the aerobic phosphate uptake of DPB_Ni was lower than that of anaerobic phosphorus-released sludge in a traditional A/O process. However, there was not much difference between these two kinds of sludge in terms of the total phosphorus uptake quantity and the effluent quality.

Issue Date: 05 March 2007

Cite this article:

XIONG Biyong,LI Jie,ZHANG Shude, et al. Effects of nitrite on phosphate uptake in anaerobic-oxic process[J]. Front.Environ.Sci.Eng., 2007, 1(1): 39-42.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-007-0007-3
https://academic.hep.com.cn/fese/EN/Y2007/V1/I1/39

Viewed

Full text

Abstract

Cited

Shared

Discussed