CN219972009U - Domestic sewage treatment device - Google Patents

Abstract

The utility model discloses a domestic sewage treatment device, which relates to the technical field of sewage treatment and comprises: the sewage treatment device comprises a tank body, a plurality of aeration plates, a plurality of aeration rotating wheels and aeration pipes, wherein the tank body is used for storing sewage, and the left end and the right end of the tank body are respectively connected with a water outlet and a water inlet; the aeration plates are arranged in the tank body at intervals from left to right, the aeration plates are used for dividing the tank body into a plurality of aeration tanks, overflow ports are formed in the upper ends of the aeration plates, and adjacent aeration tanks are communicated through the overflow ports; the aeration rotating wheel is rotatably arranged at the upper end of the aeration plate, the aeration rotating wheel is partially immersed in sewage, the rotating shaft of the aeration rotating wheel is perpendicular to the aeration plate, and the aeration rotating wheel is used for pushing the sewage in the aeration tank to circularly flow; the aeration pipe is connected with an external air source and extends to the bottom of the aeration tank, and the movement direction of bubbles generated by the aeration pipe is opposite to the water flow direction above the aeration pipe. The utility model has high aeration efficiency and high sewage treatment speed.

Description

Domestic sewage treatment device

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a domestic sewage treatment device.

Background

The sewage treatment is to make sewage reach the water quality requirement of draining into a certain water body or reusing and to purify it, and an activated sludge process is often used in domestic sewage treatment. Biological condensation, adsorption and oxidation of activated sludge are utilized to decompose and remove organic pollutants in sewage. The sludge is then separated from the water, most of the sludge is returned to the aeration tank (210), and the excess is discharged from the activated sludge system. The aeration device for sewage treatment in the current market is mostly not provided with an auxiliary stirring device, so that aeration bubbles cannot be uniformly distributed in water, the aeration efficiency is low, and the sewage treatment efficiency is low. It is difficult to meet the increasing sewage treatment demands of people.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the domestic sewage treatment device which can effectively improve the aeration efficiency, thereby improving the sewage treatment efficiency.

An apparatus for treating domestic sewage according to an embodiment of the first aspect of the present utility model includes: the sewage treatment device comprises a tank body, a plurality of aeration plates, a plurality of aeration rotating wheels and an aeration pipe, wherein the tank body is used for storing sewage, and the left end and the right end of the tank body are respectively connected with a water outlet and a water inlet; the aeration plates are arranged in the tank body at intervals from left to right, the aeration plates are used for dividing the tank body into a plurality of aeration tanks, overflow ports are formed in the upper ends of the aeration plates, and adjacent aeration tanks are communicated through the overflow ports; the aeration rotating wheel is rotatably arranged at the upper end of the aeration plate, the aeration rotating wheel is partially immersed in sewage, the rotating shaft of the aeration rotating wheel is perpendicular to the aeration plate, and the aeration rotating wheel is used for pushing the sewage in the aeration tank to circularly flow; the aeration pipe is connected with an external air source and extends to the bottom of the aeration tank, and the movement direction of bubbles generated by the aeration pipe is opposite to the water flow direction above the aeration pipe.

The domestic sewage treatment device provided by the embodiment of the utility model has at least the following beneficial effects: the aeration rotating wheel disturbs the gas-liquid interface in the rotating process, and throws a large number of water drops and a sheet-shaped water curtain into the air, so that the liquid is fully contacted with the air to increase the oxygen dissolution amount, and the aeration rotating wheel pushes the sewage in the aeration tank to circularly flow; and the sewage and the activated sludge are fully mixed and are always in a suspension state, so that the aeration efficiency is improved. The circulation generated by the aeration rotating wheel also enables the movement direction of the bubble to be opposite to the water flow direction above the aeration pipe. The residence time of bubbles in water is increased, and the aeration efficiency is further improved.

According to some embodiments of the utility model, a vertically extending partition plate is connected to the center of the right side of the aeration plate, a space is reserved between the lower end of the partition plate and the bottom of the tank body, and a space is reserved between the upper end of the partition plate and the aeration rotating wheel.

According to some embodiments of the utility model, a baffle plate is arranged at the bottom of the aeration tank, and the baffle plate is used for reducing the resistance of the sewage in the aeration tank to circular flow.

According to some embodiments of the utility model, a sludge discharge pipe is connected to the bottom of the aeration tank, and the sludge discharge pipe is used for discharging sludge at the bottom of the aeration tank.

According to some embodiments of the utility model, the adjacent overflow ports are staggered and respectively positioned at front and rear corners of the adjacent aeration plates, and the aeration rotating wheel drives sewage at the upper part of the aeration tank to move from one end of the aeration tank, into which sewage flows, to one end of the aeration tank, into which sewage flows.

According to some embodiments of the utility model, the aeration rotating wheel comprises a wheel shaft and a plurality of wheel discs arranged at intervals, the center of each wheel disc is connected to the wheel shaft, a plurality of paddles are symmetrically arranged on each wheel disc, and when the wheel shaft drives the wheel discs to rotate, the paddles are in contact with sewage and push the sewage to move.

According to some embodiments of the utility model, a bearing seat for mounting the wheel shaft is arranged at the upper end of the aeration plate, adjacent aeration rotating wheels are connected through gear transmission, and the rotation directions of the adjacent aeration rotating wheels are opposite.

According to some embodiments of the utility model, a motor for driving one of the aeration rotating wheels to rotate is connected to the side wall of the tank body.

According to some embodiments of the utility model, the aeration tank is connected with a foam discharging port for discharging the floating mud and foam, the sewage at the upper part of the aeration tank flows to the foam discharging port, and the height of the foam discharging port is larger than that of the overflow port.

The domestic sewage treatment device provided by the embodiment of the utility model has at least the following beneficial effects:

(1) The aeration rotating wheel disturbs the gas-liquid interface in the rotating process, so that the oxygen dissolution amount is increased, and the circulation generated by the aeration rotating wheel also enables the movement direction of bubbles to be opposite to the water flow direction above the aeration pipe. The residence time of bubbles in water is increased, and the aeration efficiency is further improved;

(2) The sludge discharge pipe discharges sludge to prevent the sludge from accumulating in the aeration tank;

(3) And the aeration rotating wheel is utilized to push the sewage surface to discharge the floating mud and foam.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a mounting structure of an embodiment of the present utility model;

FIG. 2 is a top view of one embodiment of the present utility model;

FIG. 3 is a schematic view of an aeration rotor according to one embodiment of the present utility model;

FIG. 4 is a schematic view of a cell body according to an embodiment of the utility model;

FIG. 5 is a schematic view of an aeration panel according to one embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of an embodiment of the present utility model.

Reference numerals:

the water treatment device comprises a tank body 100, a motor 101, a water outlet 110 and a water inlet 120;

aeration plate 200, aeration tank 210, baffle plate 211, mud pipe 212, foam discharging port 213, overflow port 220, baffle plate 230, bearing seat 240;

aeration rotating wheel 300, wheel shaft 310, wheel disc 320 and blade 321;

and an aeration tube 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 6, a domestic sewage treatment apparatus according to an embodiment of the present utility model includes: the sewage treatment device comprises a tank body 100, a plurality of aeration plates 200, a plurality of aeration rotating wheels 300 and an aeration pipe 400, wherein the tank body 100 is formed by welding profile steel and steel plates, the inner space of the tank body 100 is used for storing sewage, a mixture of sewage and activated sludge enters the tank body 100, and harmful substances in the sewage are treated by aerobic bacteria in the sludge. The left end and the right end of the tank body 100 are respectively connected with a water outlet 110 and a water inlet 120; the aeration plates 200 are arranged in the tank body 100 at equal intervals from left to right, the aeration plates 200 are welded on the inner wall of the tank body 100, and the aeration plates 200 are vertically arranged. The aeration plate 200 is used for dividing the tank body 100 into a plurality of aeration tanks 210, the upper end of the aeration plate 200 is provided with an overflow port 220, and adjacent aeration tanks 210 are communicated through the overflow port 220; a plurality of aeration rotors 300 are rotatably installed at the upper end of the aeration plate 200, and it is envisioned that the aeration rotors 300 may be replaced with a rotary brush aeration apparatus, which is a prior art, and thus will not be described in detail. The aeration rotating wheel 300 is partially immersed in the sewage and the rotating shaft of the aeration rotating wheel 300 is perpendicular to the aeration plate 200, and the aeration rotating wheel 300 is used for pushing the sewage in the aeration tank 210 to circularly flow; the aeration wheel 300 disturbs the gas-liquid interface during rotation, throws a large number of water drops and sheet-like water curtains into the air, so that the liquid is fully contacted with the air to increase the oxygen dissolution amount, and the sewage is fully mixed with the activated sludge and is always in a suspended state. The external air source is a compressor, the aeration pipe 400 is connected with the external air source and extends to the bottom of the aeration tank 210, and air flows out from small holes formed in the aeration pipe 400 to the aeration tank 210 to form bubbles. The movement direction of the bubbles generated by the aeration pipe 400 is opposite to the direction of the water flow above the aeration pipe 400. The bubbles encounter the downward flowing water flow, so that the residence time of the bubbles in the water is increased, and the aeration efficiency is improved. And the circulation formed by the sewage is favorable for the diffusion of oxygen dissolved in the water, and the separation plate 230 separates the tank body 100 into a plurality of aeration tanks 210, so that the circulation formed by the aeration rotating wheel 300 flows in a smaller area, thereby being favorable for improving the flow rate and the aeration efficiency, and further improving the treatment efficiency of the sewage.

Referring to fig. 1 to 6, it can be understood that a vertically extending partition 230 is welded to the center of the right side of the aeration plate 200, a space is left between the lower end of the partition 230 and the bottom of the tank body 100, and a space is left between the upper end of the partition 230 and the aeration rotor 300. Because the aeration rotating wheel 300 can only push the sewage at the upper part of the aeration tank 210 to move, the baffle 230 is added, so that the sewage can only move around the baffle 230 in the aeration tank 210, and the sewage flow rate at the bottom of the aeration tank 210 is accelerated, thereby improving the uniformity of sewage and sludge mixing and further improving the purification efficiency.

Referring to fig. 1 to 6, it can be understood that a baffle plate 211 is welded to the bottom of the aeration tank 210, and the baffle plate 211 is inclined so that the bottom size of the aeration tank 210 is gradually narrowed from top to bottom. The baffle 211 serves to reduce the resistance of the circular flow of the sewage in the aeration tank 210, increase the circular flow rate of the sewage in the aeration tank 210, and uniformly mix the sewage with the sludge, thereby improving the purification efficiency.

Referring to fig. 1 to 6, it is understood that a sludge discharge pipe 212 is connected to the bottom of the aeration tank 210, and the sludge discharge pipe 212 is used to discharge sludge at the bottom of the aeration tank 210. It is envisioned that the sludge discharged from the sludge discharge pipe 212 is transported to a recycling site by a sludge screw pump for reuse. As the sludge is continuously increased in the operation, the sludge part is recycled, and the redundant sludge is buried after being dehydrated and dried.

Referring to fig. 1 to 6, it can be understood that adjacent overflow ports 220 are staggered and located at front and rear corners of adjacent aeration plates 200, respectively, and an aeration wheel 300 drives sewage at the upper portion of an aeration tank 210 to move from one end of the aeration tank 210, into which sewage flows, to one end of the aeration tank 210, into which sewage flows. The aeration wheel 300 also increases the movement distance of the sewage in the aeration tank 210, and increases the flow rate with the sewage flow rate unchanged, thereby increasing the intensity of mixing the sewage with air, and thus improving the purification efficiency.

Referring to fig. 1 to 6, it can be understood that the aeration rotating wheel 300 includes a wheel shaft 310, a plurality of wheel discs 320 spaced apart from each other, the wheel discs 320 being centrally connected to the wheel shaft 310, a plurality of blades 321 being symmetrically provided on the wheel discs 320, and the blades 321 being in contact with sewage and pushing the sewage to move when the wheel shaft 310 rotates the wheel discs 320. The wheel 320 and the blade 321 are integrally formed and made of pvc or fiberglass.

Referring to fig. 1 to 6, it can be understood that the upper end of the aeration panel 200 is provided with a bearing housing 240 in which a wheel shaft 310 is installed, adjacent aeration rotating wheels 300 are connected by gear transmission, and the rotation directions of the adjacent aeration rotating wheels 300 are opposite. The adjacent aeration rotors 300 can be rotated in opposite directions by gear drive to match the staggered adjacent overflow ports 220. So that the sewage passes a longer distance in the aeration tank 210.

Referring to fig. 1 to 6, it can be understood that a motor 101 for driving one of the aeration rotors 300 to rotate is bolted to the sidewall of the tank 100. It is envisioned that two motors 101 may be provided to drive the aeration rotors 300 at the left and right ends, respectively, to improve the driving stability.

Referring to fig. 1 to 6, it is understood that the aeration tank 210 generates sludge and foam during operation, which affect the sewage treatment speed. The aeration tank 210 is connected with a foam discharging port 213 for discharging the floating mud and foam, and sewage at the upper part of the aeration tank 210 flows to the foam discharging port 213, and the height of the foam discharging port 213 is larger than that of the overflow port 220. The aeration wheel 300 pushes the sewage and the foam at the upper portion of the aeration tank 210 to the side of the aeration tank 210 near the bubble discharge port 213, which is more advantageous for the discharge of the sludge and the foam. Avoiding the decline of the purifying efficiency.

The using steps are as follows: sewage to be treated and return sludge enter the right-most aeration tank 210 from an inlet, the interface of gas and liquid is disturbed by the pushing of the aeration rotating wheel 300, the sewage is thrown into the air, so that the liquid is fully contacted with the air to increase the oxygen dissolution amount, the aeration rotating wheel 300 also pushes the aeration tank 210 to form circulation, bubbles generated by the aeration pipe 400 are absorbed when the sewage flows downwards, the oxygen is absorbed from the adjacent overflow port 220 to enter the next adjacent aeration tank 210, the sewage in the next adjacent aeration tank 210 reversely rotates under the pushing of the aeration rotating wheel 300, the sewage flows in the aeration tank 210 for a longer distance, and is fully mixed, and the sewage sequentially flows through all the aeration tanks 210 and finally flows out from an outlet. The aeration wheel 300 pushes the sewage and the foam in the upper portion of the aeration tank 210 toward the side of the aeration tank 210 near the bubble discharge port 213, and discharges the generated sludge and foam.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (9)

1. A domestic sewage treatment apparatus, comprising:

the sewage treatment device comprises a tank body (100) for storing sewage, wherein the left end and the right end of the tank body (100) are respectively connected with a water outlet (110) and a water inlet (120);

the aeration plates (200) are arranged in the tank body (100) at intervals from left to right, the aeration plates (200) are used for dividing the tank body (100) into a plurality of aeration tanks (210), overflow ports (220) are formed in the upper ends of the aeration plates (200), and adjacent aeration tanks (210) are communicated through the overflow ports (220);

a plurality of aeration rotating wheels (300) rotatably installed at the upper end of the aeration tank (200), wherein the aeration rotating wheels (300) are partially immersed in sewage, the rotation axes of the aeration rotating wheels (300) are perpendicular to the aeration tank (200), and the aeration rotating wheels (300) are used for pushing the sewage in the aeration tank (210) to circularly flow;

the aeration pipe (400) is connected with an external air source and extends to the bottom of the aeration tank (210), and the movement direction of bubbles generated by the aeration pipe (400) is opposite to the water flow direction above the aeration pipe (400).

2. A domestic sewage treatment apparatus according to claim 1, wherein: the center of the aeration plate (200) is connected with a vertically extending partition plate (230), a space is reserved between the lower end of the partition plate (230) and the bottom of the tank body (100), and a space is reserved between the upper end of the partition plate (230) and the aeration rotating wheel (300).

3. A domestic sewage treatment apparatus according to claim 2, wherein: the bottom of the aeration tank (210) is provided with a baffle plate (211), and the baffle plate (211) is used for reducing the resistance of the sewage in the aeration tank (210) to the annular flow.

4. A domestic sewage treatment apparatus according to claim 3, wherein: the bottom of the aeration tank (210) is connected with a sludge discharge pipe (212), and the sludge discharge pipe (212) is used for discharging sludge at the bottom of the aeration tank (210).

5. A domestic sewage treatment apparatus according to claim 4, wherein: adjacent overflow ports (220) are arranged in a staggered manner and are respectively positioned at front and rear corners of the adjacent aeration plates (200), and the aeration rotating wheel (300) drives sewage at the upper part of the aeration tank (210) to move from one end of the aeration tank (210) where sewage flows out to one end of the aeration tank (210) where sewage flows in.

6. A domestic sewage treatment apparatus according to claim 5, wherein: the aeration rotating wheel (300) comprises a wheel shaft (310) and a plurality of wheel discs (320) which are arranged at intervals, the centers of the wheel discs (320) are connected to the wheel shaft (310), a plurality of paddles (321) are symmetrically arranged on the wheel discs (320), and when the wheel shaft (310) drives the wheel discs (320) to rotate, the paddles (321) are in contact with sewage and push the sewage to move.

7. A domestic sewage treatment apparatus according to claim 6, wherein: the upper end of the aeration plate (200) is provided with a bearing seat (240) for the installation of the wheel shaft (310), adjacent aeration rotating wheels (300) are connected through gear transmission, and the rotation directions of the adjacent aeration rotating wheels (300) are opposite.

8. A domestic sewage treatment apparatus according to claim 7, wherein: the side wall of the tank body (100) is connected with a motor (101) for driving one of the aeration rotating wheels (300) to rotate.

9. A domestic sewage treatment apparatus according to claim 8, wherein: the aeration tank (210) is connected with a foam discharging port (213) for discharging floating mud and foam, sewage on the upper portion of the aeration tank (210) flows to the foam discharging port (213), and the height of the foam discharging port (213) is larger than that of the overflow port (220).