草浆造纸中段废水的生物处理动力学

利用静态溶解氧消耗速率（OUR）试验模拟草浆造纸中段废水生物处理的生化反应过程,并运用Lawrence-McCarty模式进行了动力学分析。由OUR试验结果和小试研究结果建立的草浆造纸中段废水好氧生物处理的动力学方程为v=0.72S/(60.43 S）。将该动力学方程预测结果和实际工程的运行数据进行了比较,结果表明,动力学方程的比基质降解速率预测值高于实际工程的计算值,分析原因可能在于：实际工程中中段废水中的纤维素类悬溪物在生物处理装置的积累导致了污泥活性的降低。

The kinetics of biological treatment of bleaching liquor from straw pulp process

The batch test of oxygen uptake rate (OUR) measurement was used to simulate biochemical reaction process in aerobic reactor treating bleaching liquor from straw pulp process. Lawrence-McCarty kinetic model was used to analyze the biochemical reaction process. The kinetic equation of bleaching liquor biological treatment, v = 0.72 S/(60.43 + S), was deduced from results of the OUR experiment and the bench experiment. The specific substrate degradation rate estimated by the kinetic equation was higher than that of practical wastewater treatment plant. The phenomenon was attributed to the decrease of activated sludge activity caused by cellulose suspended solid accumulation in aerobic reactor of practical plant.