摘要
Abstract
To clarify the global technology landscape and development trends of the anaerobic ammonium oxidation(Anammox)process,this study conducted bibliometric and in-depth mining analysis on relevant patents from 2007 to 2025 based on the PatSoap patent database and related patent analysis platforms.The results indicated that the number of global patent applications for the Anammox process had shown an overall rapid growth trend since 2007,entering a period of technological maturation especially after 2012,with increasingly active innovation activities.China was the absolute dominant technology source country and target market in this field,accounting for over 97%of patent applications,demonstrating strong R&D leadership and market focus.Beijing,Guangdong,Jiangsu,Zhejiang,and Shandong were the main hubs of technological innovation.In terms of technological composition,patents were primarily concentrated in IPC classifications such as biological treatment of water/wastewater(C02F3),multistage treatment(C02F9),and physicochemical treatment(C02F1),and span multiple interdisciplinary fields including microbiology(C12N)and separation(B01D).This reflected that R&D focused on biological nitrogen removal as the core,while gradually extending to process coupling and advanced wastewater treatment.Research hotspots of the Anammox process mainly concentrated on reactor innovation(e.g.,granular sludge/biofilm reactors),microbial culture enhancement(rapid start-up and low-temperature activity maintenance),process optimization(low-temperature,high-load,and inhibitor resistance),and multi-process coupling(e.g.,partial nitrification-Anammox,partial denitrification coupling,etc.).With the implementation of the Dual Carbon Goals,the technology was expected to develop toward intelligent,international,and refined applications,as well as large-scale mainstream adoption in municipal wastewater treatment,aiming to provide references for shaping R&D directions and industrial policies related to Anammox technology in China.关键词
厌氧氨氧化/专利分析/文献计量/技术发展/污水处理Key words
anammox/patent analysis/bibliometrics/technology development/wastewater treatment分类
资源环境
