Research Of Intelligent Modeling And Simulation To Activated Sludge Wastewater Process

Activated sludge process is a kind of effective method, which consumes the substrates and phosphate release and denitrification in wastewater by microorganism's metabolism. Activated sludge process is a multi-variables,strong coupling system, which has characteristic of time varying,high non-linearity,indetermination and lag, and difficult to build process model. For assuring treatment process run well and advancing effluent quality, it has already turned into the universal careful problem by many researchers of the scientific world to study the precise and applied dynamic model. Besides, due to wastewater process, as a complicated biochemistry reaction process, its'locale experiments need long time and are expensive. So it has especially essential realistic value to study the modeling and simulation technology of wastewater process. In the paper, on the basis of thorough analyzing past achievements, the author studied intelligent modeling and simulation technology of activated sludge wastewater treatment process. The main content of this paper is as follows: (1)On the basis of understanding the actuality of wastewater process and technics, the paper analyzed thorough present modeling methods, and pointed out the development direction of modeling and simulation technology of the process; (2) The paper studied the model method of minitype activated sludge system by BP and RBF neural networks, and testified these wastewater treatment models by neural network are effective; The results show that: â‘ The RBF neural network model has characteristic of simple method,rapid study speed, etc; â‘¡The RBF neural network model has better convergence ability and impending speed than the BP neural network model; â‘¢The BP neural network model has better generalization than the RBF neural network model; (3) The paper put forward the modeling method of activated sludge process on the basis of PCA-subtractive clustering-ANFIS network. And comparing with PCA-BP wastewater treatment model, it has better convergence ability and...