锰渣堆肥过程中基质对重金属赋存形态的影响  

Effect of Substrate on Occurrence Forms of Heavy Metals in Manganese Slag Composting

作　　者：韦绪鑫 李佳 吕莹 叶恒朋 蓝际荣 

机构地区：[1]中南民族大学资源与环境学院,武汉430074

出　　处：《有色金属（冶炼部分）》2017年第12期1-5,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家科技支撑计划项目(2015BAB01B03)

摘　　要：采用不同生物质废弃物对电解锰渣进行堆肥发酵,并用逐次溶解(BCR)分步提取法对堆肥后样品中重金属(As、Zn、Pb、Cd、Cu)形态及含量进行分析,评价不同基质对堆肥过程中重金属赋存形态变化的影响。结果表明,活性污泥对锰渣堆肥前后重金属赋存形态的变化影响最大,经其发酵后,重金属水溶态均有不同程度的降低,而残余态均有显著的提高,说明堆肥过程可以起到钝化锰渣中重金属的作用。Electrolytic manganese slag was composted and fermented with different additives of biomass wastes.Occurrence forms and contents of heavy metals（As,Zn,Pb,Cd,Cu）in composted samples were analyzed by Stepwise Extraction to evaluate effect of substrate on occurrence forms of heavy metals in manganese slag composting.The results show that activated sludge exerts the biggest impact on occurrence forms of heavy metals in manganese residue before and after fermentation.After fermentation,heavy metals of water soluble state drop by different degree,but residual state rise significantly.Fermentation process can passivate heavy metals in manganese slag.

关 键 词：重金属 锰渣 堆肥发酵 形态 

分 类 号：X758[环境科学与工程—环境工程]