我国地下水污染修复技术的专利计量分析

Bibliometric analysis of patents for groundwater pollution remediation technology in China

为了解国内地下水污染修复领域的研究现状和重点,文章基于国家知识产权局专利数据库,梳理了2005~2021年公开的地下水污染修复技术专利1 267项。通过对专利数量、专利类型、区域分布、目标污染和技术内容的计量分析,讨论了各项专利的技术特点和研究进展,总结了地下水污染修复技术的发展趋势。结果显示:地下水污染修复技术公开专利数量呈增长趋势;北京、江苏和上海等经济发达地区专利数量较多;针对的目标污染物主要是卤代烃、石油类、铬、砷和“三氮”等;可渗透反应格栅和抽出-处理是研究的主流修复技术,修复的高效性和污染的复杂性是技术研究发展的主要驱动力。

To understand the current status and key points of groundwater pollution remediation research in China, 1 267patents published from 2005 to 2021 were collected based on the patent database of the State Intellectual Property Office. In this study, the patents were quantitatively analyzed from the aspects of the patent quantity, the patent type, the regional distribution, the target pollution and the technical content. In this paper, the characteristics and progress of various techniques is discussed, and the development trend of groundwater pollution remediation technology was summarized. The results showed the increase trend in the quantity of published patents of groundwater pollution remediation technology, and Beijing, Jiangsu, Shanghai and other developed regions contributed to a large number of patents. The main target contaminants of these techniques were halogenated hydrocarbon,petroleum, chromium, arsenic, ‘three nitrogen’ and others. Permeable reactive barrier and "pump and treat" were the main techniques in groundwater pollution remediation study. The important driving force for the development of technology research was to improve the remediation efficiency to treat complex pollutions.