Intelligent aeration control device and method for sewage plant

Abstract

The invention discloses an intelligent aeration control device and method for a sewage plant, and belongs to the technical field of water treatment control. The device includes three units, wherein the first unit is an aeration system which comprises a spiral-flow aerator (1), a variable-frequency aeration fan (2), an aeration main pipeline (3), an aeration branch pipeline (4), an aeration pipeline branch (9), an aeration connecting pipeline (10) and an electric adjusting valve (5); the second unit is an ammonia nitrogen measuring system that comprises an ammonia nitrogen probe (6) and an ammonia nitrogen measuring instrument (7); and the third unit is a control system that comprises an ammonia nitrogen data acquisition system, an analysis system and a regulation and control system, and the ammonia nitrogen data acquisition system, the analysis system and the regulation and control system are integrated together to form a control device (8). On the premise that theoretical calculation of the aeration rate is oriented, ammonia nitrogen required by the emission standard serves as a water outlet end ammonia nitrogen control point, and the aeration rate is regulated and controlled through the on-way ammonia nitrogen concentration in the aerobic tank, so that the nitrification process is optimized, and intelligent aeration control over the aerobic tank is achieved.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to an intelligent aeration control system and method for a sewage plant. Background technique [0002] With the continuous development and progress of society, the state has become increasingly strict on the discharge standards of sewage treatment plants. Biological denitrification of sewage is a commonly used method and means in sewage treatment plants at home and abroad, so it has become a research hotspot of scholars at home and abroad. Since 2006, my country has entered a period of high-speed construction of municipal sewage treatment plants. Traditional sewage treatment plants generally suffer from high energy consumption (large power consumption of fans, return pumps and other equipment) and high chemical consumption (external carbon source, excessive dosage of chemical phosphorus removal agents). Therefore, research on how to reduce the operation and maintenance costs of sewage t...

AI Technical Summary

Problems solved by technology

Manual operation is mainly to adjust the air volume of the blower according to the determination of the dissolved oxygen concentration and the water quality of the effluent. Under this operation, the stability is poor. Often, the aeration volume will be too large and the labor intensity will be high in order to achieve the water as much as possible.

Even if the semi-automatic aeration control achieves data transmission, there is still the problem of high manual labor intensity

Fully automatic aeration control is the trend of future development, but the current automatic aeration control still has the problem of inaccurate aeration, resulting in waste of resources

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