【作者】 郑建军；

【导师】 韩怀芬；

【作者基本信息】 浙江工业大学 ， 环境工程， 2004， 硕士

【摘要】 本文以最佳配比制得的铬渣水泥固化体和铬渣混凝土固化体为研究对象，考察不同的影响因素对固化体中六价铬平衡浸出和浸出动力学的影响，实验发现，温度和pH值对六价铬的浸出影响较大。通过28天和90天长期稳定性动态浸出试验，考察了固化体中六价铬长期浸出行为，此外，还通过碳化和冻融这两个重要指标考察了铬渣混凝土固化体作为建筑材料的耐久性，实验发现，实验后各项指标都小于相关标准，说明固化体具有作为建筑材料的潜力。同时还考察了环境中的氧化硫硫杆菌(产强酸菌)对铬渣固化体的影响即生物稳定性，经过对比实验发现，此菌能进一步加大铬渣固化体中六价铬的浸出。更多还原

【Abstract】 This article studied waste forms containing chromium residue based on cement and concrete, which was made by optimal direction . It researched different factors effect to the balance leaching and leaching kinetics of Cr(VI) in waste forms based on cement, It is concluded that changing of temperature and pH have more effect to the leaching of Cr(VI). In addition, By 28 days and 90 days dynamic leaching ,It studied long-term leaching behavior of Cr(VI). furthermore , Waste forms based on concrete were researched by carbonization and freeze-thaw, It can be concluded that each index is less than corresponding national standards, It proves waste forms based on concrete have the potential to be construction materials.In the end ,Effect of Thiobacillus thiooxidans to waste forms based on cement , microbial stability was researched , by contrast experiments, It can be found that Thiobacillus thiooxidans accelerates the leaching of Cr(VI) in waste forms based on cement.更多还原