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| 过硫酸盐缓释技术原位修复地下水中难降解有机污染物研究进展 |
| Research progress on remediation of organic pollutants in groundwater by persulfate slow release technology |
| Received:June 04, 2025 |
| DOI：10.13254/j.jare.2025.0530 |
| 中文关键词: 缓释技术，过硫酸盐，地下水，修复效率，影响因素 |
| 英文关键词: slow release technology, persulfate, groundwater, repair efficiency, influencing factor |
| 基金项目:国家重点研发计划项目（2024YFC3713303）；国家自然科学基金项目（42477077） |
| Author Name | Affiliation | E-mail | | Wu Kongna | Chinese Academy of Environmental Sciences, Beijing 100012, China | | | Ji Jiayao | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | | | Han Xu | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | | | Sang Xueke | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | | | Jiang Yonghai | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | | | Yang Yu | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | yangyugirl@126.com | | Deng Sheng | Chinese Academy of Environmental Sciences, Beijing 100012, China
State Key Laboratory of Groundwater Pollution Simulation, Beijing 100012, China | ds_hit@163.com |
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| 中文摘要: |
| 基于硫酸根自由基（SO4-·）的原位化学氧化技术，是近年来国内外应用广泛的土壤和地下水修复技术。目前诸多研究聚焦采用不同活化策略提高SO4-·产生效率，然而污染场地的长期有效修复还面临反扩散、拖尾和反弹等重大问题，是限制原位化学氧化技术修复效果的主要难题之一。缓释技术能够控制氧化剂的释放速率、减少氧化剂的非选择性消耗和延长污染物的修复有效期，在地下水有机污染物长效修复中展现出巨大的应用潜力。本文系统综述了熔化成型法、溶胶凝胶法和乳液交联法等过硫酸盐（PS）缓释氧化材料（CRPOMs）的制备方法；总结了PS缓释技术在地下水有机污染修复中的应用效果；随后分析了材料尺寸、氧化剂与结合剂配制比、地下水流速、pH和温度等对缓释材料释放性能与污染物降解效率的影响规律；探讨了不同缓释材料的缓释机制及释放动力学模型。本文对未来研究方向进行了展望，主要包括：开发新型环保包覆材料与智能响应型复合材料，深入研究实际复杂背景基质的影响，建立基于地层渗透性的释放调控方法，发展更精准的修复能力评估体系及工程应用参数。 |
| 英文摘要: |
| In-situ chemical oxidation（ISCO）based on sulfate radicals（SO4-·）has been a widely applied technology for soil and groundwater remediation in recent years. While numerous studies have focused on enhancing SO4-· production efficiency through various activation strategies, long-term effective remediation of contaminated sites faces major challenges：including back-diffusion, tailing, and rebound, which significantly limit the effectiveness of ISCO. Slow-release technology, capable of controlling oxidant release rates, reducing non-selective consumption, and extending the remediation duration, demonstrated great potential for the long-term remediation of organic pollutants in groundwater. This research systematically reviewed preparation methods for persulfate（PS）slow-release oxidation materials （CRPOMs）, such as melt molding, sol-gel, and emulsion cross-linking; summarized the application effectiveness of PS slow-release technology in remediating organic groundwater contamination; analyzed the influence of factors like material size, oxidant to binder ratio, groundwater flow rate, pH, and temperature on the release performance of slow-release materials and the pollutant degradation efficiency; and explored the release mechanisms and kinetic models for different slow-release materials. Future research directions are also outlooked, primarily including the development of novel eco-friendly coating materials and smart responsive composite materials, in-depth investigation into the effects of complex real-world background matrices, establishment of release regulation methods based on formation permeability, and the development of more accurate assessment systems for remediation capability and engineering application parameters. |
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