含氟污泥除杂工艺优选及机理分析  

Optimization and Mechanism Analysis of Impurity RemovalProcess of Fluorine-Containing Sludge

作　　者：吉栋梁 郎玉冬 丁莹 赵泽华 黄兆琴[1] 庞舒蕾 程俊华 JI Dongliang;LANG Yudong;DING Ying;ZHAO Zehua;HUANG Zhaoqin;PANG Shulei;CHENG Junhua(College of Environment and Ecology,Jiangsu Open University,Nanjing 210036,China;Hangzhou Qianzhi New Material Research Co.,Ltd.,Hangzhou 310000,China;College of Environmental Sciences,Nanjing Xiaozhuang University,Nanjing 211171,China;Nanjing Institute of Environmental Sciences,Ministry of Ecological Environmental,Nanjing 210042,China)

机构地区：[1]江苏开放大学环境生态学院,南京210036 [2]杭州乾智新材料研究院,杭州310000 [3]南京晓庄学院环境科学学院,南京211171 [4]生态环境部南京环境科学研究所,南京210042

出　　处：《有色金属（冶炼部分）》2023年第9期143-149,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：江苏省产学研合作项目(BY2022669);江苏省高校青蓝工程优秀青年骨干教师培养项目(2021SZJS-003)。

摘　　要：光伏发电行业产生的含氟污泥中氟化钙的含量较高,具有资源化利用潜质,其循环利用可实现含氟污泥的减量化、无害化、资源化。以含氟污泥作为研究对象,研究多元处置对含氟污泥中杂质的去除效果,基于含氟污泥的含水率、形貌观测、化学组成及结构分析和沉降性能测试结果,优化氟化钙污泥资源化的技术路线。结果表明:相比两步、三步组合处理,由盐化、酸化、氟化、碱化组成的四步处理更能有效去除硅、非氟化钙形态的钙和重金属等杂质,四步法处理后的含氟污泥中氟化钙质量分数可达85%,且最终收率可达72.53%。A large number of fluorine-containing sludge generated by photovoltaic power generation industry contains high content of calcium fluoride,which can be used as a resource recycling to realize the reduction,harmless and resource utilization of fluorine-containing sludge.The fluorine-containing sludge was used as raw materials for impurity removal treatment,and the influence of multiple disposals on impurity removal was explored.Based on the moisture content,morphology observation,chemical composition and structure analysis and sedimentation performance test results of fluorine-containing sludge,the technical route of resource utilization of calcium fluoride sludge was optimized.The results show that compared with the two-step and three-step combined treatment,the four-step combined treatment of salinization,acidification,fluorination and alkalization can remove silicon,calcium and heavy metals in non calcium fluoride form more effectively.The mass fraction of calcium fluoride in the fluoride sludge treated by four-step process can reach 85%,and the final yield can reach 72.53%.

关 键 词：含氟污泥 氟化钙 多元处置 除杂工艺 

分 类 号：X705[环境科学与工程—环境工程]