PILOT-SCALE OPTIMIZATION OF OZONE DOSAGE IN UP FLOW ACTIVATED CARBON-ULTRAFILTRATION COMBINED PROCESS

WU Min-hui; LIU Shuang; QIAN Hao; WANG Zheng

doi:10.13205/j.hjgc.202110010

Volume 39 Issue 10

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(10): 72-77

WU Min-hui, LIU Shuang, QIAN Hao, WANG Zheng. PILOT-SCALE OPTIMIZATION OF OZONE DOSAGE IN UP FLOW ACTIVATED CARBON-ULTRAFILTRATION COMBINED PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 72-77. doi: 10.13205/j.hjgc.202110010

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WU Min-hui, LIU Shuang, QIAN Hao, WANG Zheng. PILOT-SCALE OPTIMIZATION OF OZONE DOSAGE IN UP FLOW ACTIVATED CARBON-ULTRAFILTRATION COMBINED PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(10): 72-77. doi: 10.13205/j.hjgc.202110010

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PILOT-SCALE OPTIMIZATION OF OZONE DOSAGE IN UP FLOW ACTIVATED CARBON-ULTRAFILTRATION COMBINED PROCESS

doi: 10.13205/j.hjgc.202110010

1. Shanghai National Engineering Research Center of Urban Water Resources Co., Ltd, Shanghai 200082, China;
2. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

Received Date: 2020-12-28
Available Online: 2022-01-26

Abstract

Abstract

In order to optimize the ozone dosage in an up flow activated carbon-ultrafiltration combined process for the water works, pilot-scale experiments were conducted to study the impact of ozone dosages on the processing efficiency of each unit, and the central composite response surface design was adopted to study the effect of ozone dosage on TOC and trihalomethane formation potential (THMFP), meanwhile, the removal efficiency of typical odor compounds and antibiotics in Jinze Reservoir was also analyzed. The results showed that excessively high pre-ozone dosage was not conducive to the removal of turbidity, UV₂₅₄ and COD_Mn in the coagulatory settler, while exceedingly high post-ozone dosage was not conducive to the removal of UV₂₅₄ and COD_Mn in the activated carbon filter. For the removal of TOC and THMFP in Jinze Reservoir, the optimized ozone dosage range was 0.6~0.65 mg/L and 1.35~1.4 mg/L for the pre-ozone and post-ozone dosage, respectively. Moreover, the pilot-scale process was highly effective in removing typical antibiotics and odor compounds except 1,4-dichlorobenzene and ethylbenzene in Jinze reservoir.
- ozonization,
- ozone dosage,
- up-flow activated carbon filter,
- coagulation precipitation

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