DIAGNOSIS AND DENITRIFICATION POTENTIAL ANALYSIS OF AN ORBAL OXIDATION DITCH PROCESS

ZHOU Yixin; ZHI Liling; ZHENG Kaikai; WANG Yan; ZHI Yao; WANG Xiaofei; LI Ji

doi:10.13205/j.hjgc.202211025

Volume 40 Issue 11

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(11): 177-181

ZHOU Yixin, ZHI Liling, ZHENG Kaikai, WANG Yan, ZHI Yao, WANG Xiaofei, LI Ji. DIAGNOSIS AND DENITRIFICATION POTENTIAL ANALYSIS OF AN ORBAL OXIDATION DITCH PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 177-181. doi: 10.13205/j.hjgc.202211025

Citation:

ZHOU Yixin, ZHI Liling, ZHENG Kaikai, WANG Yan, ZHI Yao, WANG Xiaofei, LI Ji. DIAGNOSIS AND DENITRIFICATION POTENTIAL ANALYSIS OF AN ORBAL OXIDATION DITCH PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(11): 177-181. doi: 10.13205/j.hjgc.202211025

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DIAGNOSIS AND DENITRIFICATION POTENTIAL ANALYSIS OF AN ORBAL OXIDATION DITCH PROCESS

doi: 10.13205/j.hjgc.202211025

ZHOU Yixin¹,
ZHI Liling²,
ZHENG Kaikai³,
WANG Yan³,
ZHI Yao⁴,
WANG Xiaofei⁴,
LI Ji^{3,5,6
,
,}

1. Wuxi Public Utilities Industrial Group Co., Ltd, Wuxi 214001, China;
2. Wuxi Water Group Co., Ltd, Wuxi 214001, China;
3. School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China;
4. Wuxi Puhui Environmental Technology Co., Ltd, Wuxi 214028, China;
5. Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China;
6. Collaborative Innovation Center of Water Treatment Technology & Material of Jiangsu Colleges, Suzhou 215009, China

Received Date: 2021-02-18
Available Online: 2023-03-24

Abstract

Abstract

Jiangsu promulgated a new regional standard, "Emission Limits for Major Water Pollutants from Urban Sewage Treatment Plants and Key Industrial Industries in the Taihu Basin" (DB32/1072-2018) in June 2018. Urban sewage treatment plants in the Taihu Basin are facing a new round of upgrading and reconstruction. Regarding a municipal sewage treatment plant in the Taihu Basin as the research object, the whole process analysis was applied to evaluate the main problems in the actual operation of the Orbal oxidation ditch. The results showed that the rate of denitrification potential and rate of activated sludge were 8.0 and 2.24 mg NO₃^--N/(g VSS·h) respectively. Regarding the analysis of the whole process of chemical oxygen demand (COD) and total nitrogen (TN), it revealed that the lack of carbon source, low internal reflux ratio, and siltation limited the further improvement of nitrogen removal efficiency, so there was still a certain potential for nitrogen removal after the optimized operation. This paper provided a basis for the actual operation of the plant and the design of the subsequent upgrade, and also offered a reference for the similar urban sewage treatment plants that had the need for upgrade and renovation.
- Orbal oxidation ditch,
- whole process analysis,
- denitrification rate/potential,
- flow rate

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References(16)

References

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