摘要
The effluent quality from a secondary clarifier in an activated sludge process depends on the performance in the secondary clarifier at great extent. Several models have been developed based on the Kynch solid flux theory to improve the clarifier performance at last decades. This paper proposed a model which is established according to the basis sedimentation process of the secondary clarifier and Kynch flux theory for a clarifier with feedwell in upper of tank and the diffusion effective are combined into the model, which benefts the further improvement of the model and makes the solutions fit to the measurement data in secondary clarifier,