污水处理过程中会产生大量剩余污泥,对剩余污泥进行厌氧消化处理既能减少环境污染,又能回收能源。本文基于文献计量学方法和可视化工具,对中国知网(CNKI)数据库和Web of Science核心数据库2003-2023年间收录的相关文章进行梳理,对当前剩余污泥厌氧消化处理的研究热点领域进行比较分析,并对剩余污泥成分、理化特性和厌氧消化预处理方法进行文献综述。研究表明,剩余污泥厌氧消化产生甲烷是该处理技术的重要目的,预处理技术与剩余污泥处理存在重要关联性;物理、化学和生物酶等不同预处理技术对产沼气量有较大影响,针对污泥本身的理化性质而采用更加合适的预处理技术,能够在节约成本的同时进一步提高剩余污泥资源化利用程度。
Research Progress of Anaerobic Digestion Pretreatment of Excess Activated Sludge Based on Bibliometric Analysis
Anaerobic digestion of excess sludge is one of the most effective technologies for anaerobic digestion treatment,which has the dual function of reducing environmental pollution and providing energy.The study compared and analyzed the current research hotspots in anaerobic digestion of excess sludge based on the relevant articles in the CNKI database and the Web of Science core database from 2003 to 2023 via bibliometric methods and visualization tools.The application of anaerobic digestion of excess sludge to produce methane is an important purpose for excess sludge treatment,and there is an important correlation between pretreatment technology and excess sludge treatment.The application of different pretreatment technologies,such as physical,chemical and biological enzymes,have a significant impact on biogas production,and a more appropriate pretreatment technology for the physical and chemical properties of the sludge can further increase the degree of excess sludge resource utilization while saving costs.