NDLI: Anoxic phosphorus removal in a pilot scale anaerobic-anoxic oxidation ditch process

Content Provider	Springer Nature Link
Author	Hou, Hongxun Wang, Shuying Peng, Yongzhen Yuan, Zhiguo Yin, Fangfang Gan, Wang
Copyright Year	2009
Abstract	The anaerobic-anoxic oxidation ditch (A$^{2}$/O OD) process is popularly used to eliminate nutrients from domestic wastewater. In order to identify the existence of denitrifying phosphorus removing bacteria (DPB), evaluate the contribution of DPB to biological nutrient removal, and enhance the denitrifying phosphorus removal in the A$^{2}$/O OD process, a pilot-scale A$^{2}$/O OD plant (375 L) was conducted. At the same time batch tests using sequence batch reactors (12 L and 4 L) were operated to reveal the significance of anoxic phosphorus removal. The results indicated that: The average removal efficiency of COD, NH 4 + , PO 4 3− , and TN were 88.2%, 92.6%, 87.8%, and 73.1%, respectively, when the steady state of the pilotscale A$^{2}$/O OD plant was reached during 31–73 d, demonstrating a good denitrifying phosphorus removal performance. Phosphorus uptake took place in the anoxic zone by poly-phosphorus accumulating organisms NO 2 − could be used as electron receptors in denitrifying phosphorus removal, and the phosphorus uptake rate with NO 2 − as the electron receptor was higher than that with NO 3 − when the initial concentration of either NO 2 − or NO 3 − was 40 mg/L.
Starting Page	106
Ending Page	111
Page Count	6
File Format	PDF
ISSN	16737415
Journal	Frontiers of Environmental Science & Engineering in China
Volume Number	3
Issue Number	1
e-ISSN	16737520
Language	English
Publisher	SP Higher Education Press
Publisher Date	2009-03-07
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	wastewater treatment anaerobic-anoxic (A$^{2}$/O) oxidation ditch (OD) biological phosphorus removal denitrifying phosphorus removal Environment
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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