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.
微气泡臭氧-BAC去除典型嗅味物质的效果
- Title:
- Effect of Microbubble Ozone-Biological Activated Carbon Process on Elimination of Typical Odors
- Keywords:
- microbubble ozone; biological activated carbon; odor; anion; organic matter
- 摘要:
- 为了解决黄河下游湖库水源水中2-甲基异莰醇（2-MIB）和土臭素（GSM）等嗅味物质超标问题，开发了微气泡臭氧-生物活性炭组合工艺（MBO3-BAC），该工艺能提高臭氧传质效率和利用率，并能有效应对水体的有机污染，出水水质符合《生活饮用水卫生标准》（GB 5749—2022），对强化湖库水源水处理、提升饮用水水质的稳定性具有实际应用潜力。考察了运行工况和水体背景基质对MBO3-BAC去除2-MIB和GSM效果的影响。结果表明，MBO3-BAC运行过程中，GSM和2-MIB的去除率与臭氧浓度呈正相关，增加炭床停留时间可提高GSM和2-MIB的去除率。此外，水体中无机阴离子CO32-/HCO3-会抑制MBO3-BAC对嗅味物质的去除效果，但SO42-对去除嗅味物质具有促进作用；当水中腐殖酸浓度为1 mg/L时有助于GSM和2-MIB的去除，但过高的腐殖酸浓度会显著抑制MBO3-BAC的运行效能；pH也会影响MBO3-BAC的效能，碱性环境更适宜去除2-MIB和GSM。
- 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.
相似文献/References:
[1]陶辉,厉彦辉,周伟青,等.针对低温期有机物去除率低的生物活性炭更换探究[J].中国给水排水,2022,38(9):33.
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