Intelligent aeration system with dissolved oxygen meter

Abstract

The invention discloses an intelligent aeration system with a dissolved oxygen meter. The intelligent aeration system comprises the dissolved oxygen meter, an aeration disc, a PLC (programmable logic controller), a frequency converter, an aeration tank and a blower. Intelligent control of dissolved oxygen in the aeration tank is achieved by putting a detection probe of the dissolved oxygen meter in the aeration tank, sending parameter signals of the dissolved oxygen in the aeration tank into the dissolved oxygen meter, transmitting data to a data processing module of the PLC by the dissolved oxygen meter to calculate the biological oxygen demand and dissolved oxygen of the aeration tank, sending an instruction to a blower regulating module in the frequency converter after comparing the calculation results with the programs preset in the PLC, regulating the blast volume of the blower to control appropriate biological oxygen demand in the aeration tank and simultaneously sending an instruction to an air flow distribution module in the frequency converter to regulate an electric flow regulating valve of an aeration pipeline in the blower.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an intelligent aeration system with a dissolved oxygen measuring instrument. Background technique [0002] At present, various sewage treatment plants in China generally adopt the aeration tank process to increase the dissolved oxygen in the sewage dissolved oxygen treatment section. At present, manual control of the aeration system and fixed value adjustment methods are commonly used. Most sewage treatment plants in China still use manual control of the aeration system. The manual control of the aeration system is for the operator to adjust the air volume of the blower every day or for a longer period of time according to experience and laboratory test data to make the aeration tank operate normally. Methods. Although this method can also make the aeration tank operate normally, and the effluent reaches the standard. However, this method cannot adapt to changes in the...

AI Technical Summary

Problems solved by technology

However, in actual operation, due to the long-time control lag of this method, the overall control accuracy is low, and the dissolved oxygen control value fluctuates greatly.

And once the dissolved oxygen meter breaks down, the entire automatic control system will be in a paralyzed state and cannot work normally.

Images