中文摘要：

通过铅对颗粒污泥活性的抑制与恢复试验，分析了Pbn的毒性作用。结果表明：不同Pb^2＋浓度所产生的抑制类型不同，颗粒污泥活性爱抑制的程度随pb^2＋浓度的增大而增加，产气恢复所经过的时间也大不相同，单位微生物接纳的Pb^2＋浓度越低，污泥越易恢复，时间越短，微生物对铅的毒性产生的适应能力越强。

英文摘要：

The toxic action of Pb^2＋ was analysed through the experiment of Pb^2＋ against granular sludge＇s inhibition and recovery. The results showed that different Pb^2＋ concentration generated different inhibition types; the inhibited degree of granular sludge increased with the increases of Pb^2＋ concentration; the time experienced for recovery generating gas was very different from each other. The lower the Pb^2＋ concentration received by unit microorganism, the easier the sludge recovered; the shorter the time, the stronger the adaptability of microorganism to Pb^2＋ toxicity