Patent ID: 6808630
Filing Date: 2004-10-26
Classification: C02F,G05B,Y02W

Abstract:
A method for controlling treatment of sewage/waste water comprising:measuring attributes of inflow water flowing into a sewage/waste water treatment plant, attributes of an internal condition of a reaction tank having a first story and a second story, and fluid present values (PVs) of efficiency attributes of outflow water; collecting data of the measured fluid PVs and operation-processing said data to convert said data into physical quantity data; obtaining each optimum set point (SP) of each dissolved oxygen (DO) and solids retention time (SRT) of the first story and the second story of an exhalation tank by comparing PVs of the measured attributes using a neural network control program with a back-propagation algorithm; converting each obtained optimum SP into an analog and digital control output value by comparing said each obtained optimum SP with each PV of each DO and SRT of the first story and the second story of the exhalation tank; and controlling each air control valve of the first story and the second story of the exhalation tank and a pump for drawing sludge based on each obtained control output value.