| 电催化臭氧技术降解啶虫脒 |
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| 引用本文： | 马永双,展巨宏,王会姣,王玉珏.电催化臭氧技术降解啶虫脒[J].环境工程,2021,39(12):107. |
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| 作者姓名： | 马永双 展巨宏 王会姣 王玉珏 |
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| 作者单位： | 1. 清华大学 环境学院, 北京 100084; |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2017ZX07202-001)。 |
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| 摘 要： | 研究了臭氧氧化、紫外/臭氧(UV/O3)和电催化臭氧(electro-peroxone, EP)3种技术降解啶虫脒的机制,比较了3种技术降解地下水和地表水中啶虫脒的效率和能耗(使用EEO指标表征)。发现啶虫脒为臭氧难氧化物质,与臭氧(O3)和羟基自由基(·OH)的二级反应速率常数分别为(0.05±0.01) mol/(L·s)、(2.8±0.2)×109 mol/(L·s)。经6 min臭氧氧化后,地下水和地表水中的啶虫脒去除率仅为26%和64%。与之相比,UV/O3和EP技术可以完全去除地下水和地表水中的啶虫脒。臭氧氧化、UV/O3和EP技术降解啶虫脒的能耗分别为0.11~0.27,1.22~1.24,0.12~0.24 kW·h/m3。结果表明,EP技术是一种去除饮用水中啶虫脒的高效低耗技术。
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| 关 键 词： | electro-peroxone 臭氧 紫外光 啶虫脒 |
| 收稿时间： | 2020-12-30 |
STUDY ON ABATEMENT OF ACETAMIPRID BY ELECTRO-PEROXONE PROCESS |
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| Affiliation: | 1. School of Environment, Tsinghua University, Beijing 100084, China;2. Suzhou Purification Equipment Co., Ltd, Suzhou 215129, China;3. Research Institute for Environmental Innovation (Suzhou), Tsinghua University, Suzhou 215163, China;4. School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China |
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| Abstract: | The abatement kinetics and mechanism of acetamiprid were studied by ozonation, ultraviolet/ozone(UV/O3), and electro-peroxone(EP) in the groundwater and surface water. The electrical energy demands per order removal(EEO) of acetamiprid abatement by these processes were compared in two real water matrices. The second-order rate constants for the reaction of acetamiprid with ozone and hydroxyl radical(·OH) at pH of 7 were determined to be(0.05±0.01) mol/(L·s) and(2.8±0.2)×109 mol/(L·s), respectively. After 6 min ozone oxidation, the removal rates of acetamiprid in groundwater and surface water were only 26% and 64%. In contrast, UV/O3 and EP technology can completely remove acetamiprid from groundwater and surface water. The energy demands for 90% removal efficiency of acetamiprid were 0.11~0.27, 1.22~1.24, and 0.12~0.24 kW·h/m3 for ozonation, UV/O3, and EP processes, respectively. The results showed that the EP process was an energy-efficient alternative for the abatement of acetamiprid in water treatment. |
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