活性污泥法处理餐饮废水的动力学研究

Kinetics Study of the Activated Sludge Process in Restaurant Sewage Treatment

通过对餐饮活性污泥法生化处理过程的实验研究,得到了好氧生化处理过程中总化学需氧量与溶解性化学需氧量的浓度变化,确定其降解趋势符合一级反应动力学,降解常数为0.346±0.005h-1。据此建立了模型并模拟了活性污泥法处理餐饮废水时溶解性化学需氧量随时间的变化,确定了达到排污标准所需的最低水力停留时间,为餐饮废水生化处理工程设计提供了依据。

Lab-experiments of restaurant sewage biological treatment were conducted to determine the concentration variations of total and soluble chemical oxygen demand during the treatment process. The results showed that the degradation process followed the first order kinetics, and the constant of degradation was determined to be 0.346±0.005 h^-1. The kinetic model was applied to simulate the degradation of soluble chemical oxygen demand in an activated sludge tank. The result demonstrated that this kinetic model was able to determine the minimal hydraulic retention time of aerobic biological treatment of restaurant sewage, and could be an useful tool in designing a treatment plant.