铬渣的长期稳定性试验研究  

Study on the Long-term Stability of Chromium Slag

作　　者：韩怀芬[1] 郑庆锋[1] 郑建军[1] 陈小娟[1] 

机构地区：[1]浙江工业大学环境工程系,浙江杭州310014

出　　处：《重庆环境科学》2003年第11期48-50,共3页Chongqing Environmental Science

摘　　要：采用硫酸亚铁为还原剂 ,粉煤灰为添加剂对铬渣进行固化 /稳定化处理 ,并通过冻融、碳化、模拟酸雨淋溶以及表面浸出实验研究了固化体的长期稳定性。冻融后固化体的质量损失小于 1% ,强度损失小于 10 % ;碳化后其碳化深度在 8mm～ 15 mm之间 ;抗压强度均大于 30 Mpa,可用于建筑用途 ;六价铬的浸出毒性均低于国家标准的 1.5 mg/ L:表明固化体长期稳定性良好 ,用于填埋 ,安全、可靠。A study of long-term stability of chromium slag solidified/stabilized with FeSO 4 and flyash showed:its quality loss was below 1% and intensity loss was below 10% after being frostbited,and its carbonization depth was between 8 and 15mm after being carbonized,and the intensity was more than 30MPa so that it can be used in building,and the toxicity of Cr(Ⅵ)maceration extract met the National Standard.In conclusion,the long-term stability of solidified chromium slag proved good and inearth is safe and credible.

关 键 词：铬渣 长期稳定性 浸出毒性 

分 类 号：X757[环境科学与工程—环境工程]