A submersible flow-aeration device and a sewage treatment method

Abstract

The present invention discloses a submersible flow-aeration device and a sewage treatment method, belonging to the technical field of sewage treatment. It includes an aeration blower, an aeration main pipe and a rotating aeration pipe. The rotating aeration pipe is connected to the aeration blower through the aeration main pipe, and an aeration component with an aeration direction perpendicular to the axial direction of the rotating aeration pipe is arranged on the rotating aeration pipe; the rotating aeration pipe is horizontally arranged at the bottom of the sewage tank and is rotatably connected to the aeration main pipe. The rotation of the rotating aeration pipe can drive the aeration component to rotate in the vertical plane, and the rotation plane formed by the rotation of the aeration component is parallel to the flow direction of the sewage. The present invention can integrate aeration and submersible flow-aeration equipment, reduce or even eliminate submersible flow-aeration, stirring and internal reflux equipment, and avoid the problem that the aeration component with a single aeration direction is easily blocked.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and more specifically, relates to a submersible jet aeration device and a sewage treatment method. Background Art

[0002] Existing A N / O biological pool design. In order to cope with the problems of too low influent water quality concentration and large water quality fluctuations in the initial stage of sewage plant operation, on the basis of configuring biological pool aeration equipment according to the designed water quality, a large number of jet flow equipment are added. By means of alternately starting and stopping the jet flow equipment and the aeration equipment, the volume ratio of anoxic and aerobic is adjusted in order to achieve the purpose of energy-saving operation and coping with water quality fluctuations. However, due to the relatively fixed positions of the auxiliary jet flow equipment and the aeration equipment, the adjustment margin is limited, and the equipment maintenance volume often increases significantly due to the addition of a large number of jet flow equipment.

[0003] The microporous aerator is fixed at the bottom of the pool. If the influent pollutant concentration is low or intermittent (restricted) aeration is carried out to control the sludge concentration, the air supply will stop, resulting in the deposition of activated sludge at the bottom of the pool, covering the aerator. Over time, the micropores will be blocked, increasing the aeration resistance and even causing a serious decline in aeration efficiency, and the aerator needs to be replaced frequently.

[0004] Currently, a submersible jet impeller is often installed at the front end of the area where the distributed aerator is located. Although this can reduce the problem of sludge deposition on the bottom of the pool and the surface of the microporous aerator, if the distance between the jet impeller and the microporous aerator is too close, the aerator is often loosened or damaged due to the excessive thrust of the jet impeller. If the distance is too far, the problem of microporous aerator blockage caused by sludge deposition cannot be completely solved. On the other hand, the aerobic area where the microporous aerator is arranged is large. Installing more submersible jet impellers not only increases the investment and operation costs, but also makes the equipment quantity too large, which is inconvenient for maintenance and management. Summary of the Invention

[0005] 1. Problems to be Solved

[0006] Aiming at the problems in the prior art that the aeration equipment is easy to be blocked, the jet flow equipment is not easy to adjust and maintain, and the two cannot be coordinated, the present invention provides a submersible jet aeration device and a sewage treatment method. By designing a submersible jet aeration device that can change the aeration or jet flow direction by rotation, the problems that the aeration equipment is easy to be blocked, the jet flow equipment is not easy to adjust and maintain, and the two cannot be coordinated are effectively solved.

[0007] 2. Technical Solutions

[0008] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0009] A submersible flow-aeration device of the present invention is used for pushing and aerating sewage in a sewage tank. It includes an aeration fan, an aeration main pipe, and a rotating aeration pipe. The rotating aeration pipe is connected to the aeration fan through the aeration main pipe, and an aeration component with an aeration direction perpendicular to the axial direction of the rotating aeration pipe is provided on the rotating aeration pipe; the rotating aeration pipe is horizontally arranged at the bottom of the sewage tank and is rotationally connected to the aeration main pipe. The rotation of the rotating aeration pipe can drive the aeration component to rotate in the vertical plane, and the rotation plane formed by the rotation of the aeration component is parallel to the flow direction of the sewage.

[0010] Preferably, it further includes a rotating motor, and the output shaft of the rotating motor is connected to the rotating aeration pipe for driving the rotating aeration pipe to rotate along its axial direction.

[0011] Preferably, the aeration component includes an aeration branch pipe and an aeration plate. One end of the aeration branch pipe is communicated with the rotating aeration pipe, and the other end of the aeration branch pipe is communicated with the aeration plate. The aeration plate aerates in a direction away from the rotating aeration pipe.

[0012] Preferably, it further includes a connecting pipe, which is arranged at the bottom end of the aeration main pipe and is communicated with it; a plurality of parallel rotating aeration pipes are arranged on the connecting pipe, and a plurality of aeration plates are provided on the rotating aeration pipes; the length L1 of the aeration branch pipe is 0.4m - 0.6m, the distance between the rotating aeration pipes is L2 = 0.8m - 1.2m, and L1 / L2 = 0.4 - 0.6.

[0013] Preferably, the aeration main pipe is vertically arranged. The aeration main pipe includes a first aeration pipe and a second aeration pipe that are communicated with each other and can move relatively up and down. The first aeration pipe is connected to the aeration fan, and the second aeration pipe is rotationally connected to the rotating aeration pipe.

[0014] Preferably, it further includes a lifting motor, and the output shaft of the lifting motor is connected to the second aeration pipe for driving the second aeration pipe, the rotating aeration pipe, and the aeration component to lift together.

[0015] Preferably, one end of the second aeration pipe is sleeved outside one end of the first aeration pipe, and the first aeration pipe and the second aeration pipe are in clearance fit.

[0016] Preferably, a slide rail is provided on the sewage tank, and a locking groove is provided on the slide rail; a slider matching the shape of the locking groove is provided on the side of the second aeration pipe, and the slider is slidably arranged on the slide rail through the locking groove.

[0017] Preferably, a support member is installed on the side of the second aeration pipe, and the slider is arranged on the support member.

[0018] Preferably, a support seat slidably connected to the sewage tank is provided at the top of the sewage tank, the aeration fan is arranged on the support seat, the slide rail is connected to the support seat, and the relative sliding of the aeration fan and the sewage tank can drive the flow-aeration device to move in the sewage tank.

[0019] A sewage treatment method of the present invention disposes a submersible flow-aeration device described in the present invention in a sewage tank to treat sewage, so that the rotary aeration pipe penetrates below the sewage liquid level, and the rotary aeration pipe is rotated to aerate and / or push the sewage.

[0020] Preferably, the distance between the rotary aeration pipe and the sewage liquid level is H1, the distance between the rotary aeration pipe and the bottom surface of the sewage tank is H2, and the length L1 of the aeration branch pipe is 0.4 m to 0.6 m. When the rotary aeration pipe is rotated to aerate and / or push the sewage, the second aeration pipe is lifted and lowered so that H1 / H2 = 2 to 3 and H2 > L1 + 200 mm.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) For a submersible flow-aeration device of the present invention, by rotating the rotary aeration pipe, the aeration direction of the aeration component can be continuously changed. When the aeration direction is upward, it can play a role in aerobic reaction by aerating the sewage. When the aeration direction is parallel to the water flow direction, it can play a role in pushing the sewage. Therefore, the present invention integrates aeration and submersible flow-aeration equipment, reducing or even eliminating submersible flow-aeration, stirring, and internal reflux equipment, and the operation management and maintenance are simple. More importantly, changing the action mode can also avoid the problem that the aeration component with a single aeration direction is prone to blockage.

[0024] (2) For a sewage treatment method of the present invention, based on a submersible flow-aeration device of the present invention, the aeration component can rotate continuously in water, avoiding sludge deposition, and having both functions of pushing and aerating, effectively improving the sewage treatment efficiency. Description of the drawings

[0025] Figure 1 It is a side view of a submersible flow-aeration device of the present invention;

[0026] Figure 2 It is a three-dimensional view of a submersible flow-aeration device of the present invention;

[0027] Figure 3 It is a top view of a submersible flow-aeration device of the present invention;

[0028] Figure 4 It is a cross-sectional view of a submersible flow-aeration device of the present invention.

[0029] In the figure:

[0030] 100, aeration fan;

[0031] 200, support base;

[0032] 300. Slide rail;

[0033] 400. Sewage tank; 410. Water tank; 420. Liquid level;

[0034] 500. Main aeration pipe; 510. First aeration pipe; 520. Second aeration pipe; 521. Support; 522. Slide block;

[0035] 600. Rotating aeration pipe; 610. Aeration branch pipe; 620. Aeration plate;

[0036] 700. Connecting pipe. Detailed implementation mode

[0037] The following detailed description of the exemplary embodiments of the present invention refers to the accompanying drawings, which form a part of the description. In the drawings, the exemplary embodiments in which the present invention can be implemented are shown as examples, and the features of the present invention are identified by reference numerals. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but is only for illustrative purposes and does not limit the description of the features and characteristics of the present invention, in order to present the best mode of implementing the present invention and to enable those skilled in the art to implement the present invention. However, it should be understood that various modifications and variations can be made without departing from the scope of the present invention defined by the appended claims. The detailed description and the drawings should be considered illustrative only, not restrictive. If there are any such modifications and variations, they will all fall within the scope of the present invention described herein. In addition, the background art is intended to illustrate the research status and significance of the present technology and is not intended to limit the present invention or the application fields of the present application and the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs; the terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] It should be noted that when an element is referred to as being "provided on" another element, it can be directly on the other element or there can also be an intermediate element; when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time; the terms "first", "second", "horizontal", "vertical" and similar expressions used herein are only for the purpose of illustration.

[0040] The present invention will be further described below in conjunction with specific embodiments.

[0041] Embodiment

[0042] This embodiment provides a submersible jet aeration device for jet aeration of sewage in a sewage tank 400. It includes an aeration blower 100, an aeration main pipe 500, and a rotating aeration pipe 600. The rotating aeration pipe 600 is connected to the aeration blower 100 through the aeration main pipe 500, and an aeration component with an aeration direction perpendicular to the axial direction of the rotating aeration pipe 600 is provided on the rotating aeration pipe 600. The aeration component in this embodiment includes an aeration branch pipe 610 and an aeration plate 620. The aeration plate 620 can be selected as a microporous aerator. One end of the aeration branch pipe 610 is communicated with the rotating aeration pipe 600, and the other end of the aeration branch pipe 610 is communicated with the aeration plate 620. The aeration plate 620 aerates in a direction away from the rotating aeration pipe 600. The rotating aeration pipe 600 is horizontally arranged at the bottom of the sewage tank 400 and is rotatably connected to the aeration main pipe 500. The rotation of the rotating aeration pipe 600 can drive the aeration branch pipe 610 and the aeration plate 620 to rotate in a vertical plane, and the rotation plane formed by the rotation of the aeration branch pipe 610 and the aeration plate 620 is parallel to the flow direction of the sewage. When aeration is required, the aeration plate 620 can be rotated so that the aeration direction is upward, and when jet flow is required, the aeration plate 620 can be rotated so that the aeration direction is the same as or opposite to the sewage flow direction. Therefore, the submersible jet aeration device in this embodiment can integrate the aeration and jet flow functions, which not only solves the problem that traditional aeration equipment is easily blocked but also avoids the accumulation of traditional jet flow equipment in the sewage tank 400.

[0043] In some embodiments, a rotating motor can be used to drive the rotation of the rotating aeration pipe 600. The output shaft of the rotating motor is connected to the rotating aeration pipe 600 to drive the rotating aeration pipe 600 to rotate along its axial direction. The rotating aeration pipe 600 can be rotated to a fixed position or rotated continuously for 360 degrees.

[0044] Furthermore, in order to improve the operation efficiency of the device, this embodiment is provided with multiple aeration components. Specifically, a connecting pipe 700 is provided at the bottom end of the aeration main pipe 500 and is communicated with it. A plurality of parallel rotating aeration pipes 600 are provided on the connecting pipe 700, and a plurality of aeration plates 620 are provided on the rotating aeration pipes 600; the length of the aeration branch pipe 610 is L1 = 0.4 m to 0.6 m, the distance between the rotating aeration pipes 600 is L2 = 0.8 m to 1.2 m, and L1 / L2 = 0.4 to 0.6. When L1 is about 0.5 m, L2 is about 1.0 m, and L1 / L2 = 0.5, the sewage treatment effect is the best.

[0045] In some embodiments, the main aeration pipe 500 is vertically arranged. The main aeration pipe 500 includes a first aeration pipe 510 and a second aeration pipe 520 which are communicated with each other and can move relatively up and down. The first aeration pipe 510 is connected to the aeration blower 100, and the second aeration pipe 520 is rotatably connected to the rotary aeration pipe 600. The lifting of the second aeration pipe 520 is realized by a lifting motor. The output shaft of the lifting motor is connected to the second aeration pipe 520 and is used to drive the second aeration pipe 520, the rotary aeration pipe 600 and the aeration components to lift together.

[0046] In this embodiment, one end of the second aeration pipe 520 is sleeved outside one end of the first aeration pipe 510, and the first aeration pipe 510 and the second aeration pipe 520 are in clearance fit. The connection between the two is treated with a sealed sliding hard pipe or connected with a telescopic hose to ensure that the second aeration pipe 520 can move up and down and is sealed. In other embodiments, one end of the second aeration pipe 520 can also be sleeved inside one end of the first aeration pipe 510, as long as the two can achieve relative movement through clearance fit. In other embodiments, according to different pool depths, the second aeration pipe 520 can also be set to one section or multiple sections to ensure the lifting height at different distances and meet the actual needs of different pool depths.

[0047] In order to enable the second aeration pipe 520 to move up and down stably, in this embodiment, a slide rail 300 is provided on the sewage pool 400, and a locking groove is provided on the slide rail 300. In addition, a support member 521 is installed on the side of the second aeration pipe 520, and a slider 522 matching the shape of the locking groove is provided on the support member 521. The slider 522 is slidably arranged on the slide rail 300 through the locking groove. The slider 522 and the support member 521 can be hydraulically driven. Just embed the slider 522 into the locking groove on the slide rail 300. Therefore, when the second aeration pipe 520 moves up and down, it can slide stably on the slide rail 300 through the slider 522.

[0048] In addition, a support seat 200 slidably connected to the sewage pool 400 is also provided at the top of the sewage pool 400. The aeration blower 100 is arranged on the support seat 200, and the slide rail 300 is connected to the support seat 200. By the relative sliding of the aeration blower 100 and the sewage pool 400, the flow-pushing aeration device can be driven to move in the sewage pool 400, so that the aeration position of the flow-pushing aeration device in the sewage pool 400 can be changed at any time to meet the aeration requirements of different regions. Moreover, in this embodiment, the water-driven method is adopted, and the second aeration pipe 520, the rotary aeration pipe 600 and the aeration components can be lifted to the water surface for maintenance, avoiding the problems of many failures of the submersible motor and the need to empty the water pool for maintenance of the underwater fixed aeration components.

[0049] In addition, this embodiment also provides a sewage treatment method. Based on the above-mentioned submersible jet aeration device, the device is arranged in the water tank 410 of the sewage tank 400 to treat sewage, so that the rotary aeration pipe 600 extends below the sewage liquid level 420, and the rotation motor is rotated continuously for 360 degrees to rotate the rotary aeration pipe 600 to continuously aerate and / or push the sewage.

[0050] Further, in this embodiment, the distance between the rotary aeration pipe 600 and the sewage liquid level 420 is H1, and the distance between the rotary aeration pipe 600 and the bottom surface of the sewage tank 400 is H2. When the rotary aeration pipe 600 is rotated to aerate and / or push the sewage, the liquid level 420 of the sewage may change at any time. By raising and lowering the second aeration pipe 520, H1 / H2 = 2 - 3 is made, so that the second aeration pipe 520 is always at a moderate position below the liquid level 420 for rotary aeration and / or pushing, thereby effectively ensuring the efficiency of aeration or pushing and improving the sewage treatment efficiency. The distance of H2 ensures that when the aeration plate 620 rotates to the lowermost end, the distance from the bottom of the tank is greater than 200 mm, that is, H2 > L1 + 200 mm, to avoid the accumulation of sediment at the bottom of the tank from polluting the surface of the aeration plate 620.

[0051] It should be noted that continuously rotating the rotary aeration pipe 600 for 360 degrees to continuously aerate and / or push the sewage is only one of the implementation manners. In other embodiments, it can also be fixed and operated after being rotated to a certain position. For example, when the rotary aeration pipe 600 rotates to Figure 1 the position, the aeration function is realized; when the rotary aeration pipe 600 rotates 90 degrees from Figure 1 the position, the aeration direction is the same as the water flow direction, and the pushing function can be realized; when the rotary aeration pipe 600 rotates 180 degrees from Figure 1 the position, the aeration pipe aerates underwater, and the dust removal and silt cleaning function can be realized; when the rotary aeration pipe 600 rotates 270 degrees from Figure 1 the position, the aeration direction is opposite to the water flow direction, and the reverse pushing function can be realized. It can also be rotated to another position every once in a while, which will not be elaborated in this invention.

[0052] In the above, the present invention has been described in detail with reference to specific exemplary embodiments. However, it should be understood that various modifications and variations can be made without departing from the scope of the present invention defined by the appended claims. The detailed description and the drawings should be considered as illustrative only, not restrictive. If there are any such modifications and variations, they will all fall within the scope of the present invention described herein. In addition, the background art is intended to illustrate the research and development status and significance of the present technology, and is not intended to limit the present invention or the application fields of the present application and the present invention.

[0053] More specifically, although exemplary embodiments of the present invention have been described herein, the present invention is not limited to these embodiments, but includes any and all embodiments that can be recognized by those skilled in the art as being modified, omitted, for example, combinations between various embodiments, adaptively changed, and / or replaced based on the foregoing detailed description. The limitations in the claims may be broadly interpreted in accordance with the language used in the claims and are not limited to the examples described in the foregoing detailed description or during the implementation of this application, and these examples should be considered non-exclusive. Any steps recited in any method or process claim may be executed in any order and are not limited to the order set forth in the claims. Therefore, the scope of the present invention should be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.

Claims

1. A submersible jet aeration device for jet aeration of sewage in a sewage tank (400), characterized in that, It includes an aeration blower (100), a main aeration pipe (500), and a rotating aeration pipe (600). The rotating aeration pipe (600) is connected to the aeration blower (100) through the main aeration pipe (500). An aeration component with an aeration direction perpendicular to the axial direction of the rotating aeration pipe (600) is provided on the rotating aeration pipe (600). The rotating aeration pipe (600) is horizontally arranged at the bottom of the sewage tank (400) and is rotatably connected to the main aeration pipe (500). The rotation of the rotating aeration pipe (600) can drive the aeration component to rotate in the vertical plane, and the rotation plane formed by the rotation of the aeration component is parallel to the flow direction of the sewage. The main aeration pipe (500) is vertically arranged. The main aeration pipe (500) includes a first aeration pipe (510) and a second aeration pipe (520) that are interconnected and can move relatively up and down. The first aeration pipe (510) is connected to the aeration blower (100), and the second aeration pipe (520) is rotatably connected to the rotating aeration pipe (600). It further includes a lifting motor. The output shaft of the lifting motor is connected to the second aeration pipe (520) and is used to drive the second aeration pipe (520), the rotating aeration pipe (600), and the aeration component to lift together. A support seat (200) that is slidably connected to the sewage tank (400) is provided at the top of the sewage tank (400). The aeration blower (100) is arranged on the support seat (200). The relative sliding between the aeration blower (100) and the sewage tank (400) can drive the push-flow aeration device to move in the sewage tank (400). It further includes a connecting pipe (700). The connecting pipe (700) is arranged at the bottom end of the main aeration pipe (500) and is communicated with it. A plurality of parallel rotating aeration pipes (600) are arranged on the connecting pipe (700). A plurality of aeration plates (620) are provided on the rotating aeration pipe (600). The length L1 of the aeration branch pipe (610) is 0.4 m to 0.6 m, the distance between the rotating aeration pipes (600) is L2 = 0.8 m to 1.2 m, and L1 / L2 = 0.4 to 0.

6. When treating sewage, the rotating aeration pipe (600) is immersed below the sewage liquid level (420), and the rotating aeration pipe (600) is rotated to aerate and / or push the sewage. The distance between the rotating aeration pipe (600) and the sewage liquid level (420) is H1, the distance between the rotating aeration pipe (600) and the bottom surface of the sewage tank (400) is H2, and the length L1 of the aeration branch pipe (610) is 0.4 m to 0.6 m. When the rotating aeration pipe (600) is rotated to aerate and / or push the sewage, H1 / H2 = 2 to 3 is achieved by lifting the second aeration pipe (520), and H2 > L1 + 200 mm. The aeration component includes an aeration branch pipe (610) and an aeration plate (620). One end of the aeration branch pipe (610) is communicated with the rotating aeration pipe (600), and the other end of the aeration branch pipe (610) is communicated with the aeration plate (620). The aeration plate (620) aerates in a direction away from the rotating aeration pipe (600).

2. The submersible jet aeration device according to claim 1, characterized in that, One end of the second aeration pipe (520) is sleeved outside one end of the first aeration pipe (510), and the first aeration pipe (510) and the second aeration pipe (520) are in clearance fit.

3. The submersible jet aeration device according to claim 2, characterized in that, A slide rail (300) is provided on the sewage tank (400), and a locking groove is provided on the slide rail (300); a slide block (522) matching the shape of the locking groove is provided on the side of the second aeration pipe (520), and the slide block (522) is slidably arranged on the slide rail (300) through the locking groove.

4. The submersible jet aeration device according to claim 3, characterized in that, A support member (521) is installed on the side of the second aeration pipe (520), and the slide block (522) is arranged on the support member (521).

5. The submersible jet aeration device according to claim 3, characterized in that, The slide rail (300) is connected to the support base (200).

Images