CN110697879A

CN110697879A - Aerobic zone reaction tank in sewage treatment

Info

Publication number: CN110697879A
Application number: CN201911002898.5A
Authority: CN
Inventors: 黄冲英; 丁晓光
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-01-17

Abstract

The invention discloses an aerobic zone reaction tank in sewage treatment, which comprises a reaction tank, wherein a conveying pipe is arranged at the bottom of the reaction tank, a plurality of output ends are communicated on the conveying pipe, a grid plate and a movable plate are arranged in the reaction tank, the grid plate is arranged above the movable plate, two ends of the grid plate are fixedly connected with the inner wall of the reaction tank, a plurality of springs are connected between the grid plate and the movable plate, a plurality of limiting shafts are fixedly connected below the grid plate, the limiting shafts penetrate through the movable plate, suspension boxes are symmetrically arranged below the movable plate, and counterweight liquid is filled in the suspension boxes. The invention utilizes the buoyancy force in the rising process of the air input into the reaction tank to push the moving plate, the moving plate moves towards the grid plate, and the large-volume bubbles retained in the moving plate are extruded in the moving process, and then the large bubbles are extruded into small bubbles, thereby realizing the breaking effect of the bubbles and increasing the contact area of the bubbles and the nitrobacteria in the sewage.

Description

Aerobic zone reaction tank in sewage treatment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an aerobic zone reaction tank in sewage treatment.

Background

The phosphorus accumulating bacteria in the aerobic zone decompose PHA stored in vivo under the aeration and oxygenation conditions and release energy for bacteria growth and active excess absorption of soluble phosphorus in the surrounding environment, and the absorbed soluble phosphorus exists in the phosphorus accumulating bacteria in the form of phosphorus accumulating salt, so that the concentration of phosphorus in sewage is greatly reduced. After various organic matters in the sewage go through anaerobic and anoxic environments, the concentration of the organic matters in the sewage is quite low when the sewage enters an aerobic zone, so that the growth and the propagation of autotrophic nitrifying bacteria are facilitated, and the nitrifying bacteria complete ammoniation and nitrification under the aerobic environment to convert nitrogen in the sewage into NO₂-and NO₃Before the secondary sedimentation tank, a large amount of reflux mixture will be producedNO_xCarry it into an anoxic zone for denitrification.

In the reaction tank of the aerobic zone, air needs to be continuously introduced into the reaction tank to increase the oxygen content in the reaction tank for nitrifying bacteria to use, a certain time is needed for mixing the air and the sewage in the reaction tank, the air generally conveyed into the reaction tank is easy to polymerize in the floating process, and large-volume air bubbles are difficult to be well mixed with the sewage.

Disclosure of Invention

The invention aims to solve the defects in the prior art, such as: the air input into the reaction tank is easy to polymerize and difficult to be fused with the sewage, and the aerobic zone reaction tank in the sewage treatment is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an aerobic zone reaction tank among sewage treatment, includes the reaction tank, the bottom of reaction tank is provided with the conveyer pipe, the intercommunication has a plurality of outputs on the conveyer pipe, be provided with grid plate and movable plate in the reaction tank, the grid plate sets up the top at the movable plate, the both ends of grid plate and the inner wall fixed connection of reaction tank, be connected with a plurality of springs between grid plate and the movable plate, a plurality of spacing axles of below fixedly connected with of grid plate, it is a plurality of spacing axle passes the movable plate.

Preferably, suspension boxes are symmetrically arranged below the moving plate, and counterweight liquid is filled in the suspension boxes.

Preferably, the moving plate is provided with a socket corresponding to the limiting shaft, the limiting shaft penetrates through the socket, and the inner wall of the socket is provided with a plurality of balls.

Preferably, the moving plate is provided with a plurality of large apertures.

Compared with the prior art, the invention has the beneficial effects that:

1. the movable plate is pushed by buoyancy in the rising process of air input into the reaction tank, moves towards the grid plate, and extrudes large-volume bubbles retained between the movable plate and the grid plate in the moving process, and then extrudes large bubbles into small bubbles, so that the breaking effect of the bubbles is realized, and the contact area between the bubbles and nitrobacteria in sewage is increased.

2. The bubbles formed by the air are divided into small bubbles, so that the surface area of the bubbles is greatly increased, the mixing degree of the sewage and the air is effectively promoted, and the nitrifying bacteria have enough oxygen in the process of treating sewage impurities.

Drawings

FIG. 1 is a schematic structural diagram of an aerobic zone reaction tank in sewage treatment according to the present invention;

fig. 2 is a schematic structural diagram at a in fig. 1.

In the figure: 1 reaction tank, 2 delivery pipes, 3 output ends, 4 moving plates, 5 grid plates, 6 limiting shafts, 7 springs, 8 suspension boxes and 9 balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, an aerobic zone reaction tank in sewage treatment, including reaction tank 1, its characterized in that, the bottom of reaction tank 1 is provided with conveyer pipe 2, the intercommunication has a plurality of output 3 on the conveyer pipe 2, be provided with grid plate 5 and movable plate 4 in the reaction tank 1, grid plate 5 sets up the top at movable plate 4, the both ends of grid plate 5 and the inner wall fixed connection of reaction tank 1, be connected with a plurality of springs 7 between grid plate 5 and the movable plate 4, the below fixedly connected with a plurality of spacing axles 6 of grid plate 5, a plurality of spacing axles 6 pass movable plate 4.

Suspension boxes 8 are symmetrically installed below the moving plate 4, counterweight liquid is filled in the suspension boxes 8, the suspension boxes 8 are used for balancing the moving plate 4, the moving plate is made to suspend in water, a socket corresponding to the limiting shaft 6 is formed in the moving plate 4, the limiting shaft 6 penetrates through the socket, a plurality of balls 9 are installed on the inner wall of the socket, the balls 9 can reduce friction force, and a plurality of large apertures are formed in the moving plate 4.

In the invention, when a user uses the device, when sewage is conveyed to the aerobic zone, the sewage can react in the reaction tank 1, nitrifying bacteria in the reaction tank 1 can react on impurities containing nitrogen and the like in the sewage, decompose the impurities into nitrogen-containing ions and precipitate the nitrogen-containing ions, the bacteria need to convey air to the inside through the conveying pipe 2 in the reaction process for the nitrifying bacteria to use, the air can be conveyed in only through each output end 3, and the air floats up under the action of buoyancy from bottom to top after going out from the output ends 3;

the pressure of the bottom of the pool is high in the air lifting process, the pressure is gradually reduced in the lifting process, the air is relatively small bubbles at the bottom of the pool, the air is gradually polymerized into large bubbles in the lifting process, the contact area with nitrobacteria in sewage is reduced, the bubbles firstly meet the moving plate 4 when rising, a large aperture is formed in the moving plate 4, the bubbles pass through the large aperture and are difficult to rise when meeting an entity structure, the retained bubbles provide an upward buoyancy effect for the moving plate 4, the moving plate 4 is in a balanced state in the sewage in an initial state, the suspension box 8 fixedly connected with the moving plate 4 provides buoyancy, the spring 7 provides upward tension, and the bubbles inevitably move upwards when increasing the buoyancy effect on the moving plate 4;

because partial bubbles pass through the moving plate 4, the bubbles passing through the moving plate 4 are uniformly paved on the lower surface of the grid plate 5, the aperture of the grid plate 5 is small, the bubbles in water have surface tension effect and are difficult to directly break, while partial bubbles are stayed below the moving plate 4 and drive the moving plate to ascend, the moving plate 4 approaches the grid plate 5, the bubbles staying between the grid plate 5 and the moving plate 4 are extruded into small bubbles and are discharged from each gap of the grid plate 5, so that the large bubbles are divided into small bubbles, the contact area between the large bubbles and nitrifying bacteria in sewage is effectively increased, the efficiency of the ammoniation and nitrification processes is improved, and after all air is extruded out, the moving plate 4 is reset under the elastic force action of the spring 7.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides an aerobic zone reaction tank among sewage treatment, includes reaction tank (1), its characterized in that, the bottom of reaction tank (1) is provided with conveyer pipe (2), the intercommunication has a plurality of outputs (3) on conveyer pipe (2), be provided with grid plate (5) and movable plate (4) in reaction tank (1), grid plate (5) set up the top at movable plate (4), the both ends of grid plate (5) and the inner wall fixed connection of reaction tank (1), be connected with a plurality of springs (7) between grid plate (5) and movable plate (4), the below fixedly connected with of grid plate (5) is a plurality of spacing axle (6), and is a plurality of movable plate (4) are passed in spacing axle (6).

2. The aerobic zone reaction tank for sewage treatment according to claim 1, wherein suspension boxes (8) are symmetrically installed below the moving plate (4), and the suspension boxes (8) are filled with a counterweight liquid.

3. The aerobic zone reaction tank for sewage treatment according to claim 1, wherein the moving plate (4) is provided with a socket corresponding to the limiting shaft (6), the limiting shaft (6) passes through the socket, and the inner wall of the socket is provided with a plurality of balls (9).

4. The aerobic zone reaction tank for sewage treatment according to claim 1, wherein the moving plate (4) is provided with a plurality of large apertures.