利用恒温培养试验 ,测得堆肥污泥中铬的潜在释放量最大可达总输入量的 2 5% ,通过测定氮的动态变化 ,依一级反应动力学方程求得 ,在理想条件下 ,堆肥污泥中 92 %的氮可以矿化。氮的矿化量与时间的关系 ,可用回归方程 1/ Nt=1/ No+b/ t良好拟合 ,其中 Nt为在 t培养时间内氮的累积矿化量 ,t为周数 ,No为潜在的氮的可矿化量 By means of thermostatic incubation test, the potential release of chromium in compost sludge was found to be up to 25% of the total input. Through the determination of the dynamic change of nitrogen and the first-order reaction kinetic equation, under the ideal conditions, compost 92% of the nitrogen in the sludge can be mineralized. The relationship between the amount of nitrogen mineralization and time can be well fitted by regression equation 1 / Nt = 1 / No + b / t, where Nt is the cumulative mineralization of nitrogen during t incubation, t is the number of weeks, and No is Potential nitrogen mineralization