【摘要】 用CO2 作为化学稳定剂或辅助稳定剂处理三种不同的来自实际垃圾焚烧厂的飞灰 ,并对处理后的飞样进行浸滤实验来衡量稳定效果。结果表明二氧化碳对飞灰中所含的重金属Pb和Cd具有稳定效果 ,对飞灰中的Cr有促进溶出的效果。当以磷酸盐和绿矾为稳定剂稳定飞灰中的重金属时 ,先采用CO2 进行预处理基本不影响对Pb和Cd的稳定效果 ,但对Cr的浸出控制有明显的促进效果更多还原

【Abstract】 Three different fly ashes from municipal solid waste incineration plants were treated with carbon dioxide as a stabilizer or an assistant stabilizer,and a leaching test for the treated APC-residues was carried out to check the stabilization effect.The results showed that CO 2 treatment reˉduced the leaching of Pb and Cd substantially,while enhanced the release of Cr from solid to liquid.When phosphate and ferrous sulphate were used as stabilizers to treat heavy metals in APC-residues,the CO 2 pretreatment influenced the stabilization effect of Pb and Cd negligibly,but faˉcilitated to control the release of Cr in the leaching test.更多还原