Industrial sewage treatment and purification device

Abstract

The utility model relates to an industrial sewage treatment and purification device, which comprises a supercavitation module and an aeration module which are connected through a pipeline, the supercavitation module is a material pool, a first air inlet is arranged above the material pool, the first air inlet is connected with a first air inlet pipeline with a first high-pressure pump, and a second air inlet pipeline with a second high-pressure pump is arranged above the material pool. A first water inlet and a first water outlet are formed in the two opposite sides of the material pool below the first air inlet pipeline respectively, the first water inlet is connected with a water inlet pipeline with a first water dissolving pump, the first water outlet is connected with an aeration module through a communicating pipeline, and a second high-pressure pump is arranged on the communicating pipeline; and a pipeline with a second water dissolving pump is connected to the side body of the material pool above the first water outlet. The device has the advantages of simple and reasonable structure, small occupied area, high efficiency, energy conservation, environmental protection and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an industrial sewage treatment and purification device, and more particularly to a purification device for supercavitation and aeration technologies in an MBR (membrane bioreactor) sewage treatment system. Background Art

[0002] Wastewater mainly composed of process wastewater, cooling water and cleaning wastewater is a common type of industrial wastewater. The pollutants in the wastewater are diverse, and it is impossible to remove all pollutants with a single treatment unit. Usually, several methods and a treatment system composed of several treatment units are required to meet the requirements.

[0003] MBR membrane tanks have been widely used in the field of sewage treatment due to their high efficiency, energy conservation, environmental protection and other characteristics. However, traditional aeration methods have problems such as poor aeration effect and high energy consumption, which affect the overall performance of MBR membrane tanks. Therefore, it is of great practical significance to improve and innovate the aeration technology to improve sewage treatment efficiency and reduce energy consumption. For this purpose, an industrial sewage treatment and purification device is designed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide an industrial sewage treatment and purification device with simple and reasonable structure, small floor area, high efficiency, energy conservation and environmental protection. The utility model realizes the rapid convection of dissolved air in the connecting pipe, improving the aeration effect. At the same time, the bubbles generated by aeration are smaller, with a large contact area with the sewage, increasing the proportion and speed of oxygen dissolved in water. The application of the supercavitation generator makes the bubbles finer and more evenly dispersed in the sewage, further increasing the contact area between the bubbles and the sewage and improving the oxygen transfer efficiency. The precise control of the aeration controller avoids the energy consumption waste caused by over-aeration and reduces the operating cost of the MBR.

[0005] The utility model is realized by the following technical solutions: An industrial sewage treatment and purification device includes a supercavitation module and an aeration module, which are connected by pipelines. The supercavitation module is a material pool, with a first air inlet arranged above the material pool. The first air inlet is connected to a first air inlet pipeline with a first high-pressure pump. Below the first air inlet pipeline, a first water inlet and a first water outlet are respectively arranged on the opposite sides of the material pool. The first water inlet is connected to a water inlet pipeline with a first solution pump. The first water outlet is connected to the aeration module through a connecting pipeline, and a second high-pressure pump is arranged on the connecting pipeline. A pipeline with a second solution pump is connected to the side of the material pool above the first water outlet. Through the relative flow of the first solution pump and the second solution pump, the material is filled with air, and the first high-pressure pump of the first air inlet pipeline above the material pool fills the material surface with air pressure so that the air pressure enters the material to generate bubbles.

[0006] Preferably, the aeration module is a material treatment tank. A second air inlet is provided above the material treatment tank. The second air inlet is connected to a second air inlet pipe with a third high-pressure pump. The third high-pressure pump is used to aerate the material in the material treatment tank. Below the second air inlet pipe and on the opposite sides of the material treatment tank, a second water inlet and a second water outlet are respectively provided. The second water inlet is connected to the first water outlet of the material tank through a connecting pipe, for introducing the pretreated bubble-rich liquid in the material tank into the material treatment tank. The second water outlet is connected to a water outlet pipe with a fourth high-pressure pump, for discharging the processed material.

[0007] Preferably, a dissolved oxygen concentration sensor is installed on the side of the material treatment tank directly above the water outlet pipe. The dissolved oxygen concentration sensor is used to detect the dissolved oxygen concentration of the material in the material treatment tank. When the preset value is reached, the fourth high-pressure pump is manually or automatically opened through a control device to discharge the processed material.

[0008] Preferably, the control device is a PLC controller.

[0009] Preferably, both the material tank and the material treatment tank are MBR membrane tanks.

[0010] The beneficial effects of the present utility model are as follows:

[0011] By setting two relatively blowing dissolved air pumps, the present utility model realizes the rapid convection of dissolved air in the connecting pipe, improving the aeration effect. At the same time, the bubbles generated by aeration are smaller, with a large contact surface with the sewage, increasing the proportion and speed of oxygen dissolved in water.

[0012] The application of the supercavitation generator makes the bubbles smaller and more evenly dispersed in the sewage, further increasing the contact area between the bubbles and the sewage and improving the oxygen transfer efficiency. The precise control of the aeration controller avoids the energy consumption waste caused by excessive aeration and reduces the operating cost of the MBR system. The industrial sewage treatment and purification device designed by the present utility model realizes the generation of supercavitation and the precise control of aeration by optimizing the aeration device, improving the sewage treatment efficiency, reducing the energy consumption, and prolonging the service life of the MBR membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to make the ordinary technical personnel in the field more clearly understand the purpose, technical solution and advantages of the present utility model, the following further elaborates the present utility model in combination with the drawings and embodiments.

[0015] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal" and "vertical" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0016] The utility model will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, an industrial sewage treatment and purification device includes a supercavitation module and an explosion module, which are connected by a pipeline. The supercavitation module is a material pool 1. A first air inlet 2 is arranged above the material pool 1. The first air inlet 2 is connected to a first air inlet pipe 4 with a first high-pressure pump 3. A first water inlet 5 and a first water outlet 6 are arranged on opposite sides of the material pool 1 below the first air inlet pipe 4. The first water inlet 5 is connected to a water inlet pipe 7 with a first dissolved water pump 8. The first water outlet 6 is connected to the explosion module through a connecting pipe 9, and a second high-pressure pump 10 is arranged on the connecting pipe 9. A pipe 21 with a second dissolved water pump 11 is connected to the side of the material pool 1 above the first water outlet 6. The relative flow of the first dissolved water pump 8 and the second dissolved water pump 11 fills the material in the material pool with air, and the first high-pressure pump 3 of the first air inlet pipe 4 above the material pool fills the material surface with air pressure so that the air pressure enters the material to generate bubbles.

[0017] The aeration module is a material processing pool 12, and a second air inlet 13 is arranged above the material processing pool 12. The second air inlet 13 is connected to a second air inlet pipe 15 with a third high-pressure pump 14, and the third high-pressure pump 14 is used to perform aeration treatment on the material in the material processing pool 12. A second water inlet 16 and a second water outlet 17 are arranged on opposite sides of the material processing pool 12 below the second air inlet pipe 15, wherein the second water inlet 16 is connected to the first water outlet 6 of the material pool 1 through a connecting pipe 9, and is used to introduce the bubble-rich liquid pre-treated in the material pool into the material processing pool 12, and the second water outlet 17 is connected to the water outlet pipe 19 with a fourth high-pressure pump 18, and is used to export the treated material. The material pool 1 and the material processing pool 12 are both MBR membrane pools.

[0018] A dissolved oxygen concentration sensor 20 is installed above the outlet pipe 19 on the side of the material treatment tank 12. The dissolved oxygen concentration sensor 20 is used to detect the dissolved oxygen concentration of the material in the material treatment tank 12. When the preset value is reached, the fourth high-pressure pump 18 is manually or automatically opened through the control device to export the processed material. The control device is a PLC controller.

[0019] Install the corresponding pipes and pumps in sequence in the material tank and the material treatment tank (two MBR membrane tanks with MBR systems). Through the relative convection of the first solution pump and the second solution pump, the material is filled with air, and the air pressure is pumped to the surface of the material from above the material tank through the first high-pressure pump so that the air pressure enters the material, generating a large number of small-sized bubbles. These bubbles can be evenly distributed in the biological reaction tank, providing sufficient oxygen supply for the microorganisms and promoting the growth and metabolic activities of the microorganisms. At the same time, the disturbance effect of the bubbles can also reduce the concentration polarization phenomenon on the membrane surface and delay the occurrence of membrane fouling. When the material is filled with small bubbles, the material is sent into the material treatment tank through the second high-pressure pump. When the material treatment tank is filled with liquid, the air pressure is pumped into the material treatment tank through the third high-pressure pump, causing the small bubbles in the pretreated material in the material treatment tank to burst and generate an aeration phenomenon. When the dissolved oxygen concentration sensor detects that the material in the material treatment tank reaches the preset value, the PLC controller controls the fourth high-pressure pump to export the processed material.

[0020] The specific embodiments described herein are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An industrial sewage treatment and purification device, comprising a supercavitation module and an aeration module, which are connected by pipelines, and characterized in that: The supercavitation module is a material pool (1). A first air inlet (2) is arranged above the material pool (1). The first air inlet (2) is connected to a first air inlet pipe (4) with a first high-pressure pump (3). Below the first air inlet pipe (4) and on the opposite sides of the material pool (1), a first water inlet (5) and a first water outlet (6) are respectively arranged. The first water inlet (5) is connected to a water inlet pipe (7) with a first water-soluble pump (8). The first water outlet (6) is connected to an aeration module through a connecting pipe (9). A second high-pressure pump (10) is arranged on the connecting pipe (9). Above the first water outlet (6) and on the side of the material pool (1), a pipe (21) with a second water-soluble pump (11) is connected. Through the relative flow of the first water-soluble pump (8) and the second water-soluble pump (11), the material in the material pool is filled with air. And through the first high-pressure pump (3) of the first air inlet pipe (4) above the material pool, air pressure is pumped to the surface of the material to make the air pressure enter the material, generating bubbles.

2. The industrial sewage treatment and purification device according to claim 1, characterized in that: The aeration module is a material treatment pool (12). A second air inlet (13) is arranged above the material treatment pool (12). The second air inlet (13) is connected to a second air inlet pipe (15) with a third high-pressure pump (14). The third high-pressure pump (14) is used to aerate the material in the material treatment pool. Below the second air inlet pipe (15) and on the opposite sides of the material treatment pool (12), a second water inlet (16) and a second water outlet (17) are respectively arranged. The second water inlet (16) is connected to the first water outlet (6) of the material pool (1) through the connecting pipe (9) for introducing the pre-treated bubble-rich liquid in the material pool into the material treatment pool (12). Its second water outlet (17) is connected to a water outlet pipe (19) with a fourth high-pressure pump (18) for discharging the processed material.

3. The industrial sewage treatment and purification device according to claim 2, wherein: Above the water outlet pipe (19) on the side of the material treatment pool (12), a dissolved oxygen concentration sensor (20) is installed. The dissolved oxygen concentration sensor (20) is used to detect the dissolved oxygen concentration of the material in the material treatment pool (12). When the preset value is reached, the fourth high-pressure pump (18) is manually or automatically opened through a control device to discharge the processed material.

4. The industrial sewage treatment and purification device according to claim 3, characterized in that: The control device is a PLC controller.

5. The industrial sewage treatment and purification device according to claim 1 or 2, characterized in that: Both the material pool (1) and the material treatment pool (12) are MBR membrane pools.

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