2025年7月6日-8日，第二十届固体废物管理与技术国际会议（以下简称“会议”）在北京成功举办，会议以“加快发展固废新质生产力，推动‘无废城市’建设”为主题，由清华大学、中国环境科学研究院、中国环境保护产业协会、联合国环境规划署驻华代表处、钢铁工业环境保护全国重点实验室、区域环境安全全国重点实验室等单位联合主办，由格林美股份有限公司协办，由巴塞尔公约亚太区域中心等8家单位承办，28家单位和期刊支持。

多位专家学者围绕微塑料的污染现状与治理技术，分享了最新研究成果和实践经验。

北京建筑大学刘建伟教授以“PET微塑料对污泥热水解过程有机物释放的影响”为题作报告，分析了PET微塑料对污泥热水解过程有机质溶解、转化的影响机制，发现PET微塑料主要影响污泥固相有机质溶出和小分子有机物转化阶段，为理解PET微塑料在污泥处理过程中的物理化学机制提供了新视角。

延边大学周静雅副教授以《图们江流域冻融土壤微塑料污染过程与阻抗机制》为题作报告，围绕图们江流域典型结冰水体的时空变化特征，系统阐述了微塑料在冰-水-沉积物界面的迁移路径、颗粒老化与团聚行为、冰雪融化释放机制及其与微生物和有机物的协同效应。提出通过Delft3D模型与机器学习方法构建寒区微塑料迁移与风险预测技术体系，探索冻融环境下的“冰库-释放”机制，并开展微塑料去除技术如电絮凝和光催化氧化研究。

北京市农林科学院徐笠研究员以《设施农业中微塑料的污染特征与效应研究》为题作报告，系统介绍了设施农业土壤中微塑料的赋存现状及其环境行为特征，基于光谱解混与拉曼成像构建了微塑料快速识别方法，并揭示了设施使用年限与微塑料丰度、类型及粒径的相关性。同时，研究还探讨了微塑料对土壤微生物群落结构及功能的影响，以及番茄幼苗对聚苯乙烯微纳塑料的吸收、生理毒性与分子响应机制。通过转录组与代谢组联合分析，指出微塑料暴露可影响植物激素传导、碳代谢及抗氧化应激路径，进而干扰作物正常生长发育。该研究为设施农业领域微塑料污染的识别、监测及其生态效应评估提供了重要技术支撑与理论依据。

海南大学黄青研究员以《海南垃圾填埋场周边地下水微塑料及其风险研究》为题作报告，研究聚焦于垃圾填埋场对地下水环境的影响，系统分析了微塑料（MPs）、潜在风险元素（PTEs）与微生物群落三者在海南省两类管护模式（已封场与已开挖）填埋场周边地下水中的时空分布特征、相互作用机制及其生态环境风险，创新性地引入机器学习模型实现污染物迁移动态预测，为垃圾填埋场地下水污染防控与风险管理提供了科学依据。

清华大学/巴塞尔公约亚太区域中心陈源研究员分享了题为“微塑料国际管控现状与标准化进程”的报告，她介绍了微塑料的定义、标准、区域行动以及目前主要面临的挑战，她强调需整合全生命周期管理并强化国际合作以应对这一跨领域危机。

 

The 20th International Conference on Waste Management and Technology was successfully held in Beijing under the theme “Accelerating the Development of new quality productive forces in Solid Waste and Advancing the Construction of Zero-waste City.” The event was co-hosted by Tsinghua University, the Chinese Research Academy of Environmental Sciences, the China Association of Environmental Protection Industry, the United Nations Environment Programme (UNEP) China Office, the State Key Laboratory of lron and Steel Industry Environmental Protection, the State Key Laboratory of Regional Environment and Sustainability, with GEM Co., Ltd. as co-organizer, and jointly organized by eight institutions including the Basel Convention Regional Centre for Asia and the Pacific, supported by 28 partner organizations and journals.

The conference brought together leading experts and practitioners to exchange insights on emerging pollutants, solid waste management, resource utilization, and pollution prevention.

Prof. Jianwei Liu (Beijing University of Civil Engineering and Architecture) explored how PET microplastics affect sludge thermal hydrolysis, showing that they influence the release of solid-phase organic matter and the transformation of small molecules, offering new perspectives on treatment mechanisms.

Assoc. Prof. Jingya Zhou (Yanbian University) examined microplastic dynamics in the Tumen River Basin’s freeze–thaw soils, highlighting migration pathways, particle aging, and release during ice melt, while proposing predictive modeling tools and removal technologies.

Prof. Li Xu (Beijing Academy of Agriculture and Forestry Sciences) reported on microplastics in protected agriculture, revealing their impacts on soil microbes and crop physiology, with implications for food security and ecological health.

Prof. Qing Huang (Hainan University) presented a report on microplastics in groundwater near landfills, analyzing interactions with toxic elements and microbial communities, and applying machine learning for risk prediction and pollution control.

Prof. Yuan Chen (Tsinghua University / BCRC China) provided an overview of international governance and standardization progress on microplastics, stressing the importance of life-cycle management and enhanced global cooperation to address this cross-sectoral challenge.

By showcasing research from diverse disciplines—ranging from wastewater treatment and agriculture to groundwater safety and international policy—the conference underscored the urgency of tackling microplastic pollution alongside broader goals of waste reduction and sustainable development.

The event contributed to global efforts to advance zero-waste and pollution-free societies.