EVALUATION AND PROSPECT OF TREATMENT TECHNOLOGY FOR VOLATILE ORGANIC COMPOUNDS
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摘要: 当前我国挥发性有机物(volatile organic compounds,VOCs)的源头替代和过程控制还有待推进,故仍需发挥好末端治理的保障作用。通过调研和现场监测,获取我国VOCs治理技术应用现状,开展技术评估和未来展望。结果表明:各行业企业VOCs治理技术仍以活性炭吸附、光催化/光氧化及其组合技术为主,共约占86.38%,不同行业VOCs治理技术的具体应用情况有所差异;燃烧及其组合技术的平均实测去除效率最高,分别为81.74%和89.81%,其他非燃烧技术的平均实测去除效率均在80%以下,特别是企业较普遍使用的活性炭吸附、光催化/光氧化及其组合技术实测去除效率的平均值和中位数均低于50%,远不能达到国家标准要求;实际应用中,VOCs治理技术选择不合适、工艺设计不合理、预处理不重视、运行不规范等问题较为突出;未来VOCs治理技术仍需不断优化升级、更新迭代以满足减污降碳协同增效等更高的要求。
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关键词:
- 挥发性有机物(VOCs) /
- 末端治理 /
- 应用现状 /
- 技术评估 /
- 展望
Abstract: At present, the source substitution technology and process control technology of volatile organic compounds (VOCs) in China need to be promoted, and the terminal treatment technology still plays a significant role in ensuring the emission reduction effect of VOCs. Based on the investigation and on-site monitoring, the application status of VOCs treatment techniques in China are obtained, and the technology evaluation and prospects are carried out. The results show that activated carbon adsorption, photocatalysis/photooxidation and their combination are the main VOCs treatment techniques in various industries, accounting for about 86.38%, and there are differences in the application of VOCs treatment techniques in different industries. The measured average removal efficiencies of combustion and its combination technology are the highest, 81.74% and 89.81%, respectively. The measured average removal efficiencies of other non-combustion techniques are all below 80%, especially the average and median measured removal efficiencies of activated carbon adsorption, photocatalysis/photooxidation and their combination technology commonly used by enterprises are lower than 50%, cannot meet the requirements of China's national standards. In practical application, problems such as improper selection of VOCs treatment technology, unreasonable process design, low attention to pretreatment, and unregular operation are more common. In the future, VOCs treatment techniques need to be continuously optimized, upgraded, and innovated, to achieve the synergies of pollution control and carbon reduction. -
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