微塑料对剩余污泥的影响及其降解途径研究进展
RESEARCH PROGRESS ON EFFECTS OF MICROPLASTICS ON EXCESS SLUDGE AND THEIR DEGRADATION PATHWAYS
蒲艺涛 1杨茹月 2徐一荣 3柯水洲 4王晓东 5高静思 6肖康3
作者信息
- 1. 深圳职业技术大学材料与环境工程学院,广东深圳 518055;中国科学院大学资源与环境学院,北京 101408;湖南大学土木工程学院,长沙 410082
- 2. 中国科学院大学材料科学与光电技术学院,北京 101408;中国科学院大学中丹学院,北京 101408
- 3. 中国科学院大学资源与环境学院,北京 101408;北京燕山地球关键带国家野外科学观测研究站,北京 101408
- 4. 湖南大学土木工程学院,长沙 410082
- 5. 中国科学院大学材料科学与光电技术学院,北京 101408
- 6. 深圳职业技术大学材料与环境工程学院,广东深圳 518055
- 折叠
摘要
剩余污泥中残留的微塑料(microplastics,MPs)对环境和生态系统有潜在危害,需深入研究MPs在剩余污泥中的迁移、转归和降解机制,并开发有效的降解方法.首先介绍了 MPs在剩余污泥中的赋存状态,并分析MPs对剩余污泥性质和污泥处理的影响.提出影响效应与MPs种类、浓度和粒径等因素密切相关.其次,分非生物降解与生物降解途径两方面综述了 MPs在污水厂中的降解途径,非生物降解途径包括热解和水热处理,生物降解途径包括污泥堆肥、厌氧消化和生物膜法.讨论了各途径降解MPs的效率与机理,分析了各途径的特点与应用前景.其中,水热处理和污泥堆肥降解MPs效率较高,经济性好且应用场景多,优势明显.总体而言,剩余污泥中MPs的降解研究仍处于初步阶段,还需进一步深入研究.
Abstract
The residual microplastics(MPs)in excess sludge potentially harm the environment and ecosystems.Therefore,it is necessary to study the migration,fate,and degradation mechanism of MPs in excess sludge,and develop effective degradation methods to deal with the MPs problem.The occurrence state of MPs in excess sludge is first introduced and the effects of MPs on the properties of excess sludge and sludge treatment are analyzed.The effects are closely related to the type,concentration,and particle size of MPs.Secondly,the degradation pathways of MPs in wastewater treatment plants are reviewed,which can be divided into non-biodegradable and biodegradable pathways.Non-biodegradable pathways include pyrolysis and hydrothermal treatment.Biodegradable pathways include sludge composting,anaerobic digestion,and biofilm method.The degradation efficiency and mechanism of MPs are discussed and the characteristics and application prospects of each pathway are analyzed.Among them,hydrothermal treatment and sludge composting have high MPs degradation efficiency,good economic viability,and wide applicability.Currently,the research on the degradation of MPs in excess sludge is still in the preliminary stage,and further research is needed to tackle the MPs problem.
关键词
微塑料/剩余污泥/影响/降解途径Key words
microplastics/excess sludge/influence/degradation pathways引用本文复制引用
基金项目
深圳职业技术学院重点研发项目(6022310008K)
中央高校基本科研业务费专项(E2EG0502X2)
出版年
2024
NETL
NSTL
万方数据