污泥共热解制备污泥基生物炭及其在土壤回用中的改良效益  

Directional pyrolysis of sludge to prepare sludge-based biochar with soil improvement function

作　　者：韩莹莹[1,2,3] 方乐 孙宇晴 刘新会 HAN Yingying;FANG Le;SUN Yuqing;LIU Xinhui(Advanced Institute of Natural Sciences,Beijing Normal University,Zhuhai,519087,China;School of Environment,Beijing Normal University,Beijing,100875,China;Key Laboratory of Coastal Water Environmental Management and Water Ecological Restoration of Guang-Dong Higher Education Institutes,Beijing Normal University,Zhuhai,519087,China;College of Agriculture,Sun Yat-Sen University,Guangzhou,510275,China)

机构地区：[1]北京师范大学自然科学高等研究院,珠海519087 [2]北京师范大学环境学院,北京100875 [3]北京师范大学滨海水环境治理与水生态修复广东普通高校重点实验室,珠海519087 [4]中山大学农学院,广州510275

出　　处：《环境化学》2024年第5期1670-1683,共14页Environmental Chemistry

基　　金：国家自然科学基金(5220100264)资助.

摘　　要：随着全球污泥产量的快速增长,对其的资源化处置是亟待解决的现实问题.相较于传统的填埋以及新型的焚烧工艺,污泥热解可实现污泥的无害化、减量化并生成具有土壤改良潜力的污泥基生物炭,是污泥处理的一种较优选择.本文以市政污泥为研究对象,全面综述了污泥不同热解方法对生成污泥基生物炭的物化性质和其对土壤改良效应的影响,重点介绍了污泥中磷和重金属在不同热解工艺中的迁移转化机制,污泥基生物炭对土壤物化性质的影响机理、对污染土壤的修复机制、对土壤中微生物和微生物酶等的作用机制.通过以上分析,能够以此为理论支撑指导制备具有定向改良土壤功能的污泥基生物炭.本综述将有助于污泥定向热解制备污泥基生物炭的进一步发展,为污泥基生物炭土壤改良提供理论参考和支持.With the rapid growth of global sludge production,how to recycle it into resource is an urgent realistic problem.Compared with traditional direct landfill disposal and incineration,pyrolysis of sewage sludge is a superior disposal method not only because it can realize the harmlessness and reduction of sludge,but also can generate sludge biochar,which has potential value for soil improvement.In this paper,the effects of different pyrolysis methods on sludge properties and soil improvement effects were comprehensively reviewed.The migration and transformation mechanisms of phosphorus and heavy metals in pyrolysis of sewage sludge,the effects of sewage sludge biochar on soil characteristics,the remediation mechanisms of sewage sludge biochar on heavy metal and organic contaminated soil,and the effects of sewage sludge biochar on soil microorganisms and microbial enzymes were mainly introduced.Through the above analysis,this can be used as a theoretical support to guide the preparation of sludge-based biochar with the function of directional soil improvement.This review will contribute to the further studies of tailored pyrolysis of sewage sludge,and provide theoretical reference and support for using sewage sludge biochar in soil improvement.

关 键 词：污泥热解 磷富集 重金属固化 土壤改良 

分 类 号：X-1[环境科学与工程] O6[理学—化学]