Patent ID: 6303027
Filing Date: 2001-10-16
Classification: C02F,G01N

Abstract:
A treated water quality control system for controlling a quality of treated water obtained by treating sewage by a sewage treatment plant, said treated water quality control system comprising:a sewage inflow estimating unit configured to estimate an inflow of sewage;a process data storage unit configured to store process data on the sewage treatment plant;a process controller configured to control devices included in the sewage treatment plant;a manipulated variable calculating unit configured to calculate manipulated variables for controlling the process controller on the basis of the inflow of sewage estimated by the sewage inflow estimating unit and the process data read from the process data storage unit; anda process condition estimating arithmetic unit configured to predict future process conditions of the sewage treatment plant on the basis of process data read from the process data storage unit and the manipulated variables calculated by the manipulated variable calculating unit and configured to make the manipulated variable calculating unit update the calculated manipulated variables and determine optimum values of manipulated variables.