The dewatered sludge was added with various additives to be landfilled,and the variation of heavy metal speciation in sludge during initial and final landfill stages was investigated.

• 采用不同添加剂与污水处理厂的脱水污泥进行混合填埋,考察了填埋初期和后期污泥中重金属形态的变化。