The SCADA System To Monitor And Control Dirty Water Processing Factory SBR Craft By Means Of PLC On The Basis Of Distributed Control System

The running water and dirty aqueous of process business enterprise are the foundation which town construction is. In recent years, with the quick development of environmental protection in our country, the industrial waste water and living dirty aqueous decontamination handled to become the urgent matter of the moment.The paper sets Tianjing protects the tax area dirty water processing factory for example, taking the distribute type control technique as the foundation, handling the factory SBR craft SCADA system to carry on the analysis to the dirty water, which study the dirty water of factory of processing of dirty water processing the problem that system exist currently; according to the characteristics of the craft of SBR, the plan ----the whole SCADA is designed to supervise and control the system. The paper carries on the detailed description for the process of the dirty water processing SBR craft, carrying on the thorough study towards controlling the movement method and functions of the object.The whole SCADA system is divided into three layers: the manage layer, the control layer and the spot layer. In the paper, PLC chooses the OMRON company industry class SYSMAC CJl series of Europe, three networks layers for the communication of the factory typical model: a. The Ethernet (the information management layer); b. The Controller Link (the process control layer); c. The Device Net ( the spot equipments layer), this paper expounds the detailed description to the function and structures of each layer (especially for the Controller Link.) .So far, the SCADA system is being developed in expecting behind and starts to dispose lines on the spot at the same time.