Sewage treatment device and method based on precise control of oxygen input

Abstract

The invention relates to a sewage treatment device based on precise control of oxygen input, which includes a reactor body, a first water pump, a second water pump and a control unit for controlling the two water pumps. The bottom of the reactor body is provided with activated sludge, and also includes a push reaction The circulating flow of sewage in the reactor body forms the first disturbance device for air-water interface disturbance and oxygen concentration difference. The first disturbance device is connected with the control unit. In order to improve the sewage treatment effect, it can also be set on the device The surface forms a second disturbance device for air-water interface disturbance and oxygen concentration difference; the application also provides a sewage treatment method based on a sewage treatment device with precise control of oxygen input, which realizes precise control of the amount of oxygen transmitted is approximately equal to the theoretical requirement , to ensure the high activity of aerobic ammonia oxidizing bacteria and anammox bacteria, effectively inhibit the activity of nitrite oxidizing bacteria, and finally ensure the long-term, stable and efficient denitrification effect of sewage.

Description

Sewage treatment device and method based on precise control of oxygen input technical field The present invention relates to the technical field of sewage treatment, in particular to a kind of sewage treatment based on precise control of oxygen input device and method. Background technique With the growth of the population and the improvement of people's living standards, a large amount of ammonia nitrogen is discharged into the water body, and ammonia nitrogen is the cause of the One of the main pollutants of water eutrophication, water eutrophication frequently triggers public safety incidents, reducing ammonia nitrogen and total nitrogen Discharge is one of the main problems in my country's water environment protection. The commonly used process for reducing ammonia nitrogen and total nitrogen is biological denitrification technology. Based on nitrification--heterotrophic denitrification, oxygen is used as electron acceptor to convert waste through aerobic ammoni...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that there is always a gap between the aeration volume and the aeration demand in the integrated partial nitrosation-ANAMMOX reactor, and also solves how to measure the theoretical oxygen demand for ammonia nitrogen removal and how to accurately Control the oxygen input to make it roughly equal to the theoretical oxygen demand, while ensuring the activity of aerobic ammonium oxidizing bacteria, inhibit the activity of nitrite oxidizing bacteria, reduce the inhibition of anaerobic ammonia oxidizing bacteria, and ensure stable and efficient denitrification Effect, providing a sewage treatment device and method based on precise control of oxygen input

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