基于文献计量分析的污水处理“碳中和”研究现状与热点

Research advances and hotspot analysis of“carbon neutral”in wastewater treatment,based on bibliometrics

在气候变暖的大背景下,“碳中和”战略对各行业的发展影响深远;污水处理作为能耗和碳排放最高的行业之一,其“碳中和”运行也备受关注.基于Web of Science(WOS)核心合集和中国知网(CNKI)数据库的369篇文献,利用CiteSpace、VOSviewer和HistCite软件开展文献计量和知识图谱分析,梳理总结2008-2022年期间污水处理“碳中和”研究领域的研究现状及热点前沿.污水处理“碳中和”领域的研究受政策影响较大,2015年联合国气候变化大会签署《巴黎协定》和2020年中国提出“碳中和”战略促进了该领域的发展.污水处理“碳中和”受到国内外水环境领域主流期刊的较大关注,已经成为水环境领域的一个研究热点.大多数发达国家和一部分发展中国家都参与到污水处理“碳中和”研究中,各国之间合作研究密切,中国研究者是该领域的主力军.污水处理过程中的温室气体管理、微藻碳捕集和能源回收利用是目前研究的热点,传统生化处理技术与其他领域的低碳技术结合、甲烷回收利用和N_(2)O排放控制、智慧化管理则是重要的研究方向.

In the context of global warming,the“carbon neutrality”strategy has had a profound impact on the development of various industries.As an industry with one of the highest energy consumptions and carbon emissions,sewage treatment has attracted much attention with respect to the development of“carbon neutral”strategies.Based on 369 articles from the Web of Science(WOS)Core Collection and China National Knowledge Infrastructure(CNKI)databases,this study used CiteSpace,VOSviewer,and HistCite software to conduct bibliometric and knowledge graph analyses.The development overview,research status,and frontier hotspots in the field of“carbon neutrality”in sewage treatment from 2008 to 2022 are reviewed.The results showed that research on“carbon neutrality”in wastewater treatment was greatly influenced by policies.The signing of the Paris Agreement in 2015 and the proposal of China’s“carbon neutrality”strategy in 2020 have promoted the development of this field.The mainstream journals in the field of water environment,in China and worldwide,have paid great attention to carbon neutralization of sewage treatment.This research area has become a hotspot in the field of water environment.Most developed and developing countries have participated in the research on carbon neutrality in sewage treatment.There is close cooperation between countries in this research,with Chinese researchers providing substantial contributions in this field.Greenhouse gas management,microalgal carbon capture,and energy recovery from sewage treatment and its utilization are current research hotspots.The combination of traditional biochemical treatment and low-carbon technologies in other fields,such as methane recycling and N_(2)O emission control,is important for the continued development of“carbon neutral”strategies in wastewater treatment.