Dissolved-oxygen control method based on improved differential algorithm

Abstract

Disclosed is a dissolved-oxygen control method based on an improved differential algorithm. The method includes the following steps: a data acquisition system and a central control system. The data acquisition system includes a sensing device, a communication gateway and an OPC server. The sensing device carries out real-time online detection on technological parameters in a sewage disposal process and is connected with the gateway through a communication protocol. The gateway converts acquired data into data which can be identified by the OPC server and transmits the data through the OPC server. The central control system includes an OPC client and an optimizing system. The OPC client receives data information transmitted by the OPC server and transmits the data information to the optimizing system. Based on a virtual instrument technology, a powerful interconnection interface technology of LabVIEW is used to realize mixed programming of the LabVIEW and Matlab and the powerful operation capacity of the Matlab is used to carry out optimal-value searching based on the improved differential algorithm on the concentration of dissolved oxygen in a sewage disposal process. On the premise that the water quality of effluent water complies with the state standard, the operation cost is effectively saved and win-win of efficiency and economy is realized.

Description

technical field [0001] The invention relates to the fields of intelligent optimization algorithm, network communication technology, intelligent control and electrical automation control, and in particular to a dissolved oxygen control method based on an improved differential algorithm. Background technique [0002] According to the statistics of the environmental protection department, in 2010, the total fresh water consumption of the national industry was 54.395 billion tons, of which the total discharge of industrial sewage was 21.186 billion tons, of which the total discharge of industrial COD was 3.656 million tons. It can be seen that the treatment and discharge of industrial sewage treatment in the country are still not optimistic. [0003] Compared with the general industrial production process, the operation of sewage treatment is special. First of all, sewage treatment must comply with the mandatory discharge standards of environmental protection laws and regulatio...

AI Technical Summary

Problems solved by technology

From the perspective of environmental protection, the higher the effluent quality, the better, but in terms of operating costs, high effluent quality means more energy consumption and high operating costs

[0004] The traditional monitoring system judges the readings of on-site instruments by looking at the on-site inspection records, which obviously cannot meet the requirements for real-time and accuracy of data in the industrial production process, and cannot realize real-time online control of the production process

[0005] The automation level of the domestic sewage treatment process is still quite backward, most of them only stay in data collection, and most of the on-site treatment processes are limited to local monitoring

Most of the automatic control systems for sewage treatment only have simple switching value control or traditional PID control, which cannot reach the degree of control professional integration, intelligence, and whole-process control, and cannot meet the nonlinearity, large inertia, and difficulty of the sewage treatment process. Accurate modeling and other features

Low operating efficiency, high energy consumption and high cost

Images