A kind of municipal engineering environment-friendly wastewater multi-stage treatment device

Abstract

The invention relates to the technical field of wastewater treatment, in particular to an environmental-friendly multi-stage wastewater treatment device for municipal engineering, comprising an annular tank, wherein a plurality of sheaves are rotatably connected to the bottom end of the annular inner sidewall of the annular tank at an equiangular angle. An aeration mechanism is rotatably connected between each of the sheaves, the aeration mechanism includes an annular pipe, and a connecting pipe is fixedly connected between two sides of the annular inner side wall of the annular pipe. In the present invention, through the arrangement of the aeration pipe, the air hole and the sealing plate, the external air pump supplies air to the aeration pipe through the air inlet pipe, and the gas is ejected from the air hole by the top opening of the sealing plate, and drives the aeration pipe to rotate to the other side, so that the The aeration mechanism rotates, and the rotation of the aeration mechanism drives the sewage in the annular tank to rotate. When the aeration is stopped, the aeration pipe loses power, and the water body rotates to push the sealing plate, so that the sealing plate re-closes the air holes to prevent sewage from entering through the air holes. In the aeration pipe, so as to avoid the blockage of the air holes and prolong the service life and maintenance cycle of the aeration pipe.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an environmental protection type wastewater multi-stage treatment device for municipal engineering. Background technique [0002] In addition to containing a large amount of organic matter, germs and viruses in urban sewage, aeration is an indispensable step in the multi-stage treatment process of municipal sewage. Stir the liquid, accelerate the transfer of oxygen in the air to the liquid, strengthen the contact between the organic matter in the pool, microorganisms and dissolved oxygen, and oxidatively decompose the organic matter in the sewage, thereby reducing the COD value of the water body. [0003] In the existing aeration equipment, the air pipe is located in the water body. When the aeration is stopped, the sewage easily enters the air pipe, and the impurities in the water are deposited in the air pipe, which is easy to block the pipe holes, and the scum and...

AI Technical Summary

Problems solved by technology

[0003] In the existing aeration equipment, the air pipe is located in the water body. When the aeration is stopped, the sewage is easy to enter the air pipe, and the impurities in the water are deposited in the air pipe, which is easy to block the pipe hole, and the scum and oil stains on the water surface are too dispersed, which is harmful to the scum and oil stains. Less efficient when cleaning

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