磷石膏渣场中有害杂质的赋存形态分布规律及浸出特性  

Fugitive Morphology Distribution Pattern and Leaching Characteristics of Hazardous Impurities in Phosphogypsum Slag Field

作　　者：何敏杰 张婷 瞿广飞[1,2] 王军 吴丰辉 何昌毅 魏蛟 HE Minjie;ZHANG Ting;QU Guangfei;WANG Jun;WU Fenghui;HE Changyi;WEI Jiao(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China;National-Regional Engineering Research Center for Recovery of Waste Gases from Metallurgical and Chemical Industries,Kunming 650500,China)

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650500 [2]冶金及化工行业废气资源化国家地方联合工程研究中心,云南昆明650500

出　　处：《中国环境监测》2024年第6期133-142,共10页Environmental Monitoring in China

基　　金：国家重点研发计划项目(2018YFC1900203,2018YFC1801702)。

摘　　要：磷石膏中磷、氟和重金属等元素的存在严重威胁生态环境安全。通过分析磷石膏渣场不同空间位置的pH及磷、氟、重金属分布情况发现:含水率随土壤深度的增加而呈现先增加后降低的趋势,pH随土壤深度的增加表现出先碱性后酸性的趋势,不同深度含水率不同,导致有毒有害物质的分布规律不同,含水率上升导致磷、氟及重金属浸出毒性升高,对氟、锰、铅3种元素的影响最明显。研究发现:在不同土壤深度处重金属各种赋存形态的含量变化规律不仅取决于磷石膏本身的特性,还受外界环境的影响及重金属本身的性质差异影响。该研究为分析磷石膏的污染特性提供重要的研究基础,并为磷石膏的定向处理提供参考。The presence of phosphorus(P),fluorine(F),heavy metals and other elements in phosphogypsum poses a serious threat to the ecological environment.The distribution of pH,P,F and heavy metal in different spatial locations of the phosphogypsum residue field was analyzed in this paper.The results showed that water content increased initially and then decreased with the increase of depth.pH showed a trend of first alkaline and then acidic with the increase of depth.The different water content led to diverse distribution patterns of toxic and harmful substances.Specifically,an increase in water content led to the rise of phosphorus,fluorine and heavy metal leaching toxicity,among which fluorine,manganese and lead had the most significant impact.It was found that diverse patterns of heavy metal accumulation in different depths are attributed not only due to the characteristics of phosphogypsum itself,but also the environmental influences and the nature of heavy metals.In conclusion,this study provides an essential research foundation for the distribution of pollution traits of phosphogypsum,as well as crucial data support for the targeted treatment of phosphogypsum.

关 键 词：磷石膏 磷 氟 重金属 赋存形态 迁移转化 

分 类 号：X825[环境科学与工程—环境工程]