Abstract:
With rapid urbanisation and increasingly severe water environmental problems, a systematic review of research progress and development trends of urban water pollution control and water ecological restoration is of great significance for revealing the rules of technological evolution, supporting urban water environmental management and engineering technologies. Publications from 2010 to 2024 were retrieved and screened from the Web of Science Core Collection database. Bibliometric analysis was conducted using the CiteSpace visualization tool to analyse publication trends, national and institutional research patterns, and the evolution of research topics. Meanwhile, patent data from 2010 to 2024 were retrieved and screened from the Derwent Innovations Index database to further examine technological innovation characteristics and engineering application status. The results indicate that research output in this field continued to expand from 2010 to 2024, with China as the major contributing country and universities and research institutes as the main research contributors. Research topics evolved from water quality compliance, nitrogen and phosphorus reduction, and pollution load management during 2010-2013, towards point-non-point source collaborative control and integrated regulation of urban water systems, and further focused on functional material-enhanced purification, constructed wetlands, and ecological restoration since 2018. Patent topics are mainly concentrated on treatment systems, treatment devices, filtration devices, and ecological restoration, which correspond closely to the pathways of advanced treatment, natural purification, and system integration identified by bibliometric analysis. This indicates that technological development in this field is shifting from single pollution control towards multi-technology collaboration, equipment-oriented solutions, and engineering system integration. Future research should further clarify the response relationship between pollution reduction and aquatic ecosystem function restoration, strengthen the collaborative integration of advanced treatment, ecological restoration, and water reuse technologies, and improve engineering application capacity and academic impact through pilot-scale verification, long-term monitoring, and high-quality international cooperation.