地下工程静电除氡原理与试验

Principle and Experiment of Electrostatic Radon Elimination in Underground Engineering

为了解决目前地下工程内部氡污染严重的问题,减少氡污染对地下工程内部工作人员健康的威胁,在综合比较和总结目前各国降氡技术的基础上,针对氡子体的存在形态及其特征,进行了静电除氡技术的可行性分析;研究了静电除尘的机理,对双区静电除氡技术进行了设计和研究,利用静电除尘的方式将结合态氡子体吸附去除;研制了双区静电型除氡装置,并结合工程实际做了相关的试验测试。结果表明:该装置具有高效的净化除氡功能,开机4h后的除氡率在90%以上。

In order to solve the serious radon pollution problems in underground engineering at present and reduce the threat to internal staff＇s health, comprehensive comparison and summary of radon reduction technology at home and abroad were given. In view of the existing form and feature of radon daughters, the feasibility analysis of electrostatic radon elimination technology was carried out. The mechanism of the electrostatic dust removal was studied, and dual-zone electrostatic radon elimination technology was designed and researched. The way of electrostatic dust removal was used to remove bound radon daughters. The dual-zone electrostatic radon elimination device results show that was developed, and the related experiments were done in actual projects. The it has high radon purification efficiency up to 90% after four hours＇ running.