中文摘要：

通过对絮凝吸附污泥、初沉污泥、剩余污泥水解过程的试验研究,得到其水解过程中SCODCr值随时间的变化规律,发现絮凝污泥水解效果最好,初沉污泥次之,剩余污泥最差。根据试验数据,利用经典的Eastman模式对3种污泥水解酸化动力学模式进行研究,确定了水解反应的关键参数——水解速率常数kh的取值。3种污泥中颗粒性CODCr水解过程均遵循一级动力学方程,模型与试验数据拟合较好。由动力学分析亦可看出在水解反应初期的8 h内kh已高于0.1 d^-1,而反应初期24 h内也比总反应7 d的kh高出4倍,说明水解反应在初期的6-8h已达到较高速率,而后期速率逐渐降低,这就为工程中设计水解池的水力停留时间提供参考。

英文摘要：

Through the experimental study on the hydrolytic process of flocculation adsorption sludge, primary sludge and excess sludge, the change law of SCODCrvalue was observed, and the hydrolysis effect of the flocculation adsorption sludge was found to be the best, followed by primary sludge and excess sludge. According to the experimental data, classic Eastman mode was used to study the kinetics of hydrolytic acidification of the above three kinds of sludge, and then, the key parameters and hydrolysis rate constant khwere determined. The results showed that, the hydrolysis process of particulate CODCrof the mentioned kinds of sludge all followed first-order kinetic equation, and the mathematical model fitted the experimental data well. From the kinetics analysis, it also could be seen that, within the initial 8 hours of the hydrolysis reaction, the khhad been higher than 0.1 d^-1already, and the khof 24 h was 4 times higher than that of 7 d, which indicated that, hydrolytic reaction had reached a higher rate in the early 6-8 h, and the rate in the late stage reduced gradually. The study results provided reference for HRT design of hydrolysis tank in engineering.