A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal

刘巍; 杨殿海; 徐立; 沈昌明

doi:10.1016/S1004-9541(13)60458-9

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A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal

能源、资源与环境技术 | Updated：2026-01-06

- A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal
- A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal
- 中国化学工程学报（英文版） 2013年21卷第2期页码：192-1981004-954160458-9
- Affiliations：
  
  State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University,Shanghai,China,200092
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(13)60458-9
  中图分类号：
- 纸质出版：2013
- Accepted：
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刘巍, 杨殿海, 徐立, 等. A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal[J]. 中国化学工程学报（英文版）, 2013,21(2):192-1981004-954160458-9.

LIU Wei, YANG Dianhai, XU Li, SHEN Changming. A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal[J]. Chin.J.Chem.Eng., 2013, 21(2): 192-198.
刘巍, 杨殿海, 徐立, 等. A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal[J]. 中国化学工程学报（英文版）, 2013,21(2):192-1981004-954160458-9. DOI： 10.1016/S1004-9541(13)60458-9.

LIU Wei, YANG Dianhai, XU Li, SHEN Changming. A Modified Oxidation Ditch with Additional Internal Anoxic Zones for Enhanced Biological Nutrient Removal[J]. Chin.J.Chem.Eng., 2013, 21(2): 192-198. DOI： 10.1016/S1004-9541(13)60458-9.

摘要

Abstract

A novel modified pilot scale anaerobic oxidation ditch with additional internal anoxic zones was operated experimentally

aiming to study the improvement of biological nitrogen and phosphorus removal and the effect of enhanced denitrifying phosphorus removal in the process. Under all experimental conditions

the anaerobic-oxidation ditch with additional internal anoxic zones and an internal recycle ratio of 200% had the highest nutrient removal efficiency. The effluent NH

-N

total nitrogen (TN)

-P and total phosphorus (TP) contents were 1.2 mg·

-1

13 mg·

-1

0.3 mg·

-1

and 0.4 mg·

-1

respectively

all met the discharge standards in China. The TN and TP removal efficiencies were remarkably improved from 37% and 50% to 65% and 88% with the presence of additional internal anoxic zones and internal recycle ratio of 200%. The results indicated that additional internal anoxic zones can optimize the utilization of available carbon source from the anaerobic outflow for denitrification. It was also found that phosphorus removal via the denitrification process was stimulated in the additional internal anoxic zones

which was beneficial for biologic

al nitrogen and phosphorus removal when treating wastewater with a limited carbon source. However

an excess internal recycle would cause nitrite to accumulate in the system. This seems to be harmful to biological phosphorus removal.

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