污泥生物淋滤过程中Cd及Pb形态变化研究

对太原市污水处理厂的污泥进行了生物淋滤序批实验研究，采用5％接种量和底物浓度4g/L单质硫为工艺参数，采用顺序浸提法测定了生物沥滤中重金属形态之间的转化，通过淋滤前后重金属形态变化分析了其沥滤机制及浸出能力。结果表明，cd是通过间接机制沥出，Pb的沥出主要是由直接机制和间接机制的共同作用完成的。研究结果对预测污泥农用的环境风险有积极意义。

Research on morphological changes of Cd and Pb in sludge bioleaching process

The paper undertakes the sequencing batch experimental research on the bioleaching over the sludge of the Sewage Treatment Plant of Taiyuan,adopts 5% inoculation amount and substrate concentration 4 g/L elemental sulfur as the craft parameter,uses the sequence extraction method to test the interchange between heavy metals in the bioleaching,analyzes the leaching mechanism and leaching ability according to the morphological changes of the heavy metals before and after the leaching,and proves by the results t...