College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; Shaoxing Research Institute, Zhejiang University of Technology, Shaoxing 312085, China.
College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
Sci Total Environ. 2024 Dec 10;955:177234. doi: 10.1016/j.scitotenv.2024.177234. Epub 2024 Oct 31.
Sewage sludge is the source and sink of pollutants. It accumulates a large number of organic contaminants such as endocrine disrupting compounds (EDCs), persistent organic pollutants (POPs), microplastics (MPs) and pharmaceuticals and personal care products (PPCPs), thus posing threats to the ecological environment and human health. The harmlessness of sludge provides the possibility to realize the recycling of resources. In this study, the VOSviewer software is used to visualize published papers related to organic contaminants in sewage sludge. The sources and hazards of emerging pollutants in sewage sludge are outlined, as well as the current state of research on composting, hydrothermal treatment, electrochemical technology, and advanced oxidation processes applied to this area. Key challenges facing this field include the low mineralization rate of contaminants, the ecological risks posed by degradation products, reasonableness of regulations, and effectiveness of enforcement. In conclusion, the integration of existing removal technologies, exploration of degradation pathways, and toxicity assessment of degradation products are the key to achieving the harmlessness and resource utilization of sewage sludge. Additionally, it is also necessary to strengthen the international consensus on the prevention and control of emerging organic contaminants in sewage sludge, improve regulatory frameworks, enhance law enforcement, and implement comprehensive management strategies.
污泥是污染物的源头和汇。它积累了大量的有机污染物，如内分泌干扰物（EDCs）、持久性有机污染物（POPs）、微塑料（MPs）和药品及个人护理用品（PPCPs），因此对生态环境和人类健康构成威胁。污泥的无害性为实现资源的循环利用提供了可能。本研究采用 VOSviewer 软件对与污水污泥中有机污染物相关的已发表文献进行可视化。概述了污水污泥中新兴污染物的来源和危害，以及堆肥、水热处理、电化学技术和高级氧化工艺在该领域的研究现状。该领域面临的主要挑战包括污染物的低矿化率、降解产物带来的生态风险、法规的合理性和执行的有效性。总之，整合现有去除技术、探索降解途径以及对降解产物的毒性评估是实现污水污泥无害化和资源化利用的关键。此外，还需要加强对污水污泥中新兴有机污染物的预防和控制的国际共识，完善监管框架，加强执法力度，实施综合治理策略。
