CHARACTERISTICS OF OZONE OXIDATION PROCESS ON TREATMENT OF SECONDARY EFFLUENT OF WASTEWATER TREATMENT PLANT

GAO Jun-xian; RUAN Zhi-yu; XU Ke-wei; JIANG Hai-dong; ZHANG Li; WANG Yan; ZHENG Kai-kai; LI Ji

doi:10.13205/j.hjgc.202007014

Volume 38 Issue 7

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(7): 88-92,18

GAO Jun-xian, RUAN Zhi-yu, XU Ke-wei, JIANG Hai-dong, ZHANG Li, WANG Yan, ZHENG Kai-kai, LI Ji. CHARACTERISTICS OF OZONE OXIDATION PROCESS ON TREATMENT OF SECONDARY EFFLUENT OF WASTEWATER TREATMENT PLANT[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 88-92,18. doi: 10.13205/j.hjgc.202007014

Citation:

GAO Jun-xian, RUAN Zhi-yu, XU Ke-wei, JIANG Hai-dong, ZHANG Li, WANG Yan, ZHENG Kai-kai, LI Ji. CHARACTERISTICS OF OZONE OXIDATION PROCESS ON TREATMENT OF SECONDARY EFFLUENT OF WASTEWATER TREATMENT PLANT[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 88-92,18. doi: 10.13205/j.hjgc.202007014

Citation:

GAO Jun-xian, RUAN Zhi-yu, XU Ke-wei, JIANG Hai-dong, ZHANG Li, WANG Yan, ZHENG Kai-kai, LI Ji. CHARACTERISTICS OF OZONE OXIDATION PROCESS ON TREATMENT OF SECONDARY EFFLUENT OF WASTEWATER TREATMENT PLANT[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(7): 88-92,18. doi: 10.13205/j.hjgc.202007014

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CHARACTERISTICS OF OZONE OXIDATION PROCESS ON TREATMENT OF SECONDARY EFFLUENT OF WASTEWATER TREATMENT PLANT

doi: 10.13205/j.hjgc.202007014

1. School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China;
2. Xishan Longting Sewage Treatment Co., Ltd, Wuxi 214101, China

Received Date: 2020-02-10

Abstract

Abstract

The removal of dissolved refractory organic compounds can be strengthened by ozone oxidation and ozone catalytic oxidation process used as advanced treatment unit in urban sewage treatment plants. In order to explore the selectivity of ozone oxidation and the stability of removal of COD by ozone-catalyzed oxidation, the effects of ozone oxidation under different inlet water quality conditions, the treated effluents biodegradability and NH₃-N were evaluated via ozone oxidation laboratory-scale and pilot-scale test. The results showed that the effect of ozone oxidation on the removal of COD from different influents was quite different. The treatment effect of wastewater with large amount of saturated organic acids was poor. The effluents BOD₅ and NH₃-N didn't increase after ozone oxidation treatment. The effect of ozone catalytic oxidation to remove COD was related to the degree of adsorption saturation of the catalyst. Therefore, it was recommended to conduct a laboratory-scale experiment to clarify the removal effect on COD before designing the ozone oxidation and ozone-catalytic oxidation process of urban sewage treatment plants. The laboratory-scale experiment of ozone catalytic oxidation needed to be performed for more than 90 days or until the ozone catalyst reaches adsorption saturation state. It was not recommended to add biological filters or aerated biological filters after the ozone oxidation process.
- ozone oxidation,
- catalytic ozonation,
- secondary effluent,
- dissolved refractory organics

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References(24)

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