Method for automatically controlling dissolved oxygen, sludge load and sludge age in real time in sewage plant

Abstract

The invention provides a method for automatically controlling dissolved oxygen, the sludge load and the sludge age in real time in a sewage plant. The method includes the following steps: setting data, wherein parameter setting is carried out on the aerobiotic pool dissolved oxygen, the aerobiotic pool specific oxygen uptake rate, the sludge age and the secondary sedimentation tank sludge position in a system; collecting the data, wherein system parameters are collected by instruments installed at all positions of the system; processing the data, wherein actual values of the aerobiotic pool dissolved oxygen, the specific oxygen uptake rate, the sludge age and the secondary sedimentation tank sludge position are calculated according to the collected system parameters; adjusting the system, wherein the actual values after processing are compared with a set parameter value, and automatic feedback adjustment is carried out on the system according to a comparative result. By means of the method, inlet water quality and volume changes can be monitored on line in real time, impact of inlet water quality and the inlet water volume to the system are automatically controlled, adjusted and restrained through the system, the sludge load is basically stabilized by stabilizing the specific oxygen uptake rate, and meanwhile the sludge age and the aerobiotic pool dissolved oxygen can be stabilized to accordingly stabilize the outlet water quality of the system.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for automatically and real-time controlling dissolved oxygen, sludge load and sludge age in a sewage plant. Background technique [0002] The serious deterioration of the water quality environment restricts the sustainable development of the national economy and increases the cost of living and health risks of the people; the improvement of the scale and level of water pollution control will greatly promote the improvement of the quality of the water environment. The main body of water pollution control is the sewage treatment plant. The stable operation of the sewage treatment plant and energy saving and consumption reduction can significantly improve the quality of the water environment and reduce the cost of treatment. [0003] In my country's sewage treatment plants, the AAO (Anaerobic-Anoxic-Oxic) process is one of the most commonly used activated s...

AI Technical Summary

Problems solved by technology

In short, the traditional operation control method greatly reduces the stability of the system, resulting in unreasonable energy distribution, making my country's sewage plants present an overall operating state of high energy consumption and low efficiency

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