剩余污泥中磷的释放和回收技术的研究进展  

Research Progress on Release and Recovery of Phosphorus from Waste Activated Sludge

作　　者：何海东 刘亚利[1] HE Haidong;LIU Yali(School of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《化工技术与开发》2021年第6期59-63,共5页Technology & Development of Chemical Industry

摘　　要：剩余污泥中含有大量的磷酸盐和有机磷,回收这部分磷有助于缓解磷资源匮乏的问题。本文重点阐述了剩余污泥的性质、磷的分布和形态,总结了热水解和超声等强化处理技术破坏剩余污泥细胞和絮体结构、释放胞内磷至上清液的过程,以及影响磷释放的因素。综述了不同的沉淀法回收高品质磷矿物质的机理和效能,并对未来的发展方向进行了展望。A large amount of phosphate and organic phosphoruswas contained in the waste activated sludge,which was benefit for alleviating the problem of phosphorus resource shortage by recycling this part of phosphorus.Therefore,the characteristics of wasteactivated sludge,the distribution and form of phosphorus were elaborated emphatically in this paper.Simultaneously,the enhanced treatment technologies such as thermal hydrolysis and ultrasound,were summarized in terms of the destruction of sludge cells and flocs,the release of intracellular phosphorus into supernatant,and the factors affecting phosphorus release.Finally,the mechanism and efficiency of phosphorus recovery by different precipitation methods were reviewed,and the future development trend was prospected.

关 键 词：剩余污泥 磷 预处理 释放 回收 

分 类 号：X705[环境科学与工程—环境工程]