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| 微纳米气泡/UV/K2S2O8协同处理模拟垃圾渗沥液 | |
| 引用本文： | 高三笑, 傅敏, 匡雪, 康含, 杨悦. 微纳米气泡/UV/K2S2O8协同处理模拟垃圾渗沥液[J]. 环境工程学报, 2022, 16(8): 2502-2509. doi: 10.12030/j.cjee.202203123 |
| 作者姓名： | 高三笑 傅敏 匡雪 康含 杨悦 |
| 作者单位： | 1.重庆工商大学环境与资源学院，重庆 400067; 2.催化与环境新材料重庆市重点实验室，重庆 400067; 3.重庆高校催化理论与应用技术重点实验室，重庆 400067 |
| 基金项目： | 重庆市科技局项目(cstc2020jscx-msxmx0096) |
| 摘 要： |  以垃圾渗沥液中的主要污染物冰乙酸、正丁酸、正己酸和氨组成的混合物为处理对象，采用微纳米气泡联合紫外灯活化过硫酸盐法处理模拟垃圾渗沥液，考察了反应时间、过硫酸钾投加量、pH、紫外灯功率、微纳米气泡进气量对污染物去除效果的影响。结果表明：微纳米气泡对紫外灯活化过硫酸盐法有显著的协同作用。当反应时间为180 min、过硫酸钾投加量为4 g·L−1、pH=6、紫外灯功率为10 W、微纳米气泡进气量为30 mL·min−1时，污染物的去除效果最佳，COD去除率为60.68%，TOC去除率为48.05%，氨氮去除率为42.1%。  自由基淬灭实验结合EPR表征结果表明，羟基自由基和硫酸根自由基为降解过程中主要的活性物质。溶液中无机碳含量增加，说明废水中有机物分解为二氧化碳和水。  |
| 关 键 词： | 微纳米气泡 紫外灯 过硫酸盐 垃圾渗沥液 |
| 收稿时间： | 2022-03-18 |
Treatment of simulated landfill leachate by micro-nano bubble /UV/K2S2O8 |
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| GAO Sanxiao, FU Min, KUANG Xue, KANG Han, YANG Yue. Treatment of simulated landfill leachate by micro-nano bubble /UV/K2S2O8[J]. Chinese Journal of Environmental Engineering, 2022, 16(8): 2502-2509. doi: 10.12030/j.cjee.202203123 | |
| Authors: | GAO Sanxiao FU Min KUANG Xue KANG Han YANG Yue |
| Affiliation: | 1.College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; 2.Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing 400067, China; 3.Chongqing University Key Laboratory of Catalysis Theory and Applied Technology, Chongqing 400067, China |
| Abstract: | In this study, the main pollutants in landfill leachate, including glacial acetic acid, n-butyric acid, n-hexanoic acid and ammonia, were treated by micro-nano bubbles combined with UV lamp activated persulfate method. The effects of different reaction time, potassium persulfate dosage, pH, UV lamp power and gas flow of micro and nano bubbles on the removal rate of landfill leachate were studied. The results showed that micro-nano bubbles had a significant synergistic effect on UV lamp activated persulfate method. When the reaction time was 180 min, the dosage of potassium persulfate was 4 g·L−1, pH=6, uv lamp power was 10 W, and the gas flow of micro/nano bubbles was 30 mL·min−1, the removal rates of COD, TOC and ammonia nitrogen were 60.68%, 48. 05% and 42.1%, respectively. The results of free radical quenching and EPR showed that the simulated landfill leachate was degraded by the attack of hydroxyl radical and sulfate radical. Total organic carbon analyzer (TOC) analysis measured the increase of inorganic carbon in the solution, indicating the decomposition of organic matter into carbon dioxide and water in wastewater. |
| Keywords: | micro-nano bubbles ultraviolet lamp persulfate landfill leachate |
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