铬渣浸出毒性试验研究  

TEST STUDY ON TOXICITY OF CHROMIUM-CONTAINING SLAG LEACHING

作　　者：龙腾发[1] 柴立元[1] 傅海洋[1] 赵堃[1] 

机构地区：[1]中南大学冶金科学与工程学院环境工程系,湖南长沙410083

出　　处：《环境工程》2004年第6期71-73,共3页Environmental Engineering

基　　金：教育部优秀青年教师资助计划项目 (教人司 2 0 0 1 39号 )

摘　　要：铬渣给环境带来的危害一直困扰着铬盐行业的发展 ,其浸出毒性研究有利于对铬渣危害的监测评估、治理及综合利用。本试验对新渣和陈渣的浸出毒性进行了探讨 ,同时对铬渣中Cr(Ⅵ )进行全量溶取 ,并分析铬渣中主要阴、阳离子的浸出行为。从而提出适宜于评价铬渣浸出毒性的试验方法 ,即 :液固比 2 0∶1,浸取时间 8h、提取剂为HAC NaAC(pH5 0± 0 2 ) ,粒径为 12Environmental problems resulted from chromium-containing slag always hindered the development of chromium industry,whose study on leaching toxicity is favorable to monitoring,evaluating,treating and complex utilizing of chromium-containing slag.Leaching toxicity of the new and old chromium-containing slag was discussed.At the same time the total Cr(Ⅵ) in chromium-containing slag was extracted,and the leaching behaviors of the main anion and cation in chromium-containing slag were analysed.Finally,a novel method fitting for evaluating the leaching toxicity of chromium-containing slag was suggested,mainly including solid-liquid rate:20:1,extracting time:8 h,extraction agent:HAC-NaAC(pH5.0±0.2),particle size of the slag:120 mesh.

关 键 词：浸出毒性 铬渣 全量 Cr(Ⅵ) 综合利用 液固比 铬盐 浸取 粒径 阳离子 

分 类 号：X758[环境科学与工程—环境工程]