MAChun-ning,WANGYong-lei,MAHui-yuan,et al.Effect of Microbubble Ozone-Biological Activated Carbon Process on Elimination of Typical Odors[J].China Water & Wastewater,2024,40(23):49-56.
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Effect of Microbubble Ozone-Biological Activated Carbon Process on Elimination of Typical Odors

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第23期 Page: 49-56 Column: Date of publication: 2024-12-01
Author(s):
MA　Chun-ning1;  WANG　Yong-lei1;  MA　Hui-yuan2;  LIU　Bao-zhen1;  LI　Jia-ning3;  HAN　Yan-zhen4;  WANG　Lei5
（1. School of Municipal and Environmental Engineering， Shandong Jianzhu University， Jinan 250101， China； 2. Jinan Yitong Urban Construction Group Co. Ltd.， Jinan 250014， China；3. Water Resources Research Institute of Shandong Province， Jinan 250013， China； 4. Mingyang Environmental Technology Co. Ltd.， Heze 274300， China； 5. Jinan Municipal Engineering Design & Research Institute Co. Ltd.， Jinan 250001， China）
Keywords:
microbubble ozone;  biological activated carbon;  odor;  anion;  organic matter
Abstract:
A microbubble ozone-biological activated carbon combined process (MBO3-BAC) was developed to address the issue of elevated concentrations of odor compounds such as dimethylisobornol (2-MIB) and geosmin (GSM) in the lake and reservoir waters of the lower Yellow River. This innovative approach enhanced both the mass transfer efficiency and utilization rate of ozone, effectively mitigating organic pollution in water. The effluent met the requirement specified in Standards for Drinking Water Quality (GB 5749-2022), demonstrating significant practical application potential for improving lake and reservoir source water treatment and enhancing drinking water quality stability. The effects of operating conditions and water matrix on the removal of 2-MIB and GSM by MBO3-BAC were investigated. During the operation of MBO3-BAC, the removal efficiency of GSM and 2-MIB were positively correlated with the ozone concentration, and increasing the carbon residence time could improve the removal efficiency of GSM and 2-MIB. Furthermore, the presence of inorganic anions such as CO32-/HCO3- in water could hinder the efficacy of MBO3-BAC in removal of odor compounds, whereas SO42- showed to enhance the elimination of odor compounds.When the concentration of humic acid in water was 1 mg/L, it facilitated the removal of GSM and 2-MIB. However, excessively high concentrations of humic acid significantly hindered the operational efficiency of MBO3-BAC. The pH significantly influenced the efficacy of MBO3-BAC, with alkaline conditions proving to be more conducive for the removal of 2?MIB and GSM.
Last Update: 2024-12-01