Microorganism denitrification treatment device

Abstract

The invention discloses a microorganism denitrification treatment device. The microorganism denitrification treatment device comprises a box body, a plurality of microorganism carriers, an electromagnetic flowmeter, a dissolved oxygen determination module, an aeration device and a controller, and a plurality of upper frames, a plurality of lower frames, a water guide pipe and a water outlet are arranged in the box body. The upper frames positioned on the same horizontal plane are transversely arranged and close to the upper port of the box body, two ends of each of upper frames are fixedly connected with the left surface and the right surface of the box body respectively, the lower frames which are positioned on the same horizontal plane are transversely arranged and close to the bottom ofthe box body, and two ends of each of the lower frames are fixedly connected with the left surface and the right surface of the box body respectively. Each microorganism carrier comprises an upper fixing rod, a lower fixing rod and a plurality of porous wires, and the upper fixing rod and the lower fixing rod, which are arranged transversely, of each microorganism carrier are horizontally arranged and are positioned on the same vertical plane. By the aeration device in the invention, accurate aeration can be realized, intelligent degree is high, and energy saving and consumption reduction areachieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a microbial denitrification treatment device. Background technique [0002] In recent years, with the development of industry and agriculture, the problem of water pollution has become increasingly prominent. Total nitrogen and COD are the main pollutants that cause water quality to exceed the standard. The impact of water pollution on the environment has attracted great attention in the field of environmental protection worldwide. The traditional denitrification process can be divided into physical chemical denitrification method and biological denitrification method. Among them, physical and chemical denitrification methods include: break point chlorination method, chemical precipitation method, adsorption method, ion exchange method, stripping method, gas stripping method, liquid membrane method, electrodialysis method and wet catalytic oxidation method, e...

AI Technical Summary

Problems solved by technology

However, with the growth of microorganisms, the biofilm gradually thickens, and an anaerobic zone is easily formed inside the too thick biofilm, which destroys the balance of the denitrification conversion reaction in the device. Therefore, it is necessary to aerate the microbial carrier and properly adjust the aeration Strength, so that the surface of the microbial carrier maintains a moderate biofilm thickness

[0004] Existing aeration devices usually perform aeration with a fixed frequency and a fixed aeration intensity, which requires manual measurement of the dissolved oxygen in the box, and real-time adjustment of the aeration frequency and aeration intensity according to the measured data. The amount of aeration is large, and the aeration amount cannot be accurately controlled. Too little aeration amount will lead to too thick biofilm, which will greatly affect the quality of sewage treatment. Too much aeration amount will cause waste of energy

Moreover, the existing microbial carrier is spherical, difficult to fix and has a small specific surface area, low nitrogen removal efficiency, and the microorganisms inside it are easily washed away by sewage

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