Circulating ultrafiltration industrial wastewater purification device

Abstract

The invention relates to the technical field of wastewater purification, and provides a circulating ultrafiltration industrial wastewater purification device which comprises a device body, and a filter screen, a partition plate, an ultrafiltration tank and the like which are arranged in the device body. The energy storage device has the remarkable beneficial effects that the centrifugal pump set, the ultrafiltration tank, the ultrafiltration membrane assembly, the pressure sensor and the electromagnetic valve work cooperatively, the ultrafiltration membrane assembly continuously filters when the electromagnetic valve is closed regularly, and purified water enters a lower cavity of the ultrafiltration tank, so that the water level rises to compress gas above an ultrafiltration membrane to store energy. When the pressure in the ultrafiltration tank is higher than the pressure in the ultrafiltration membrane assembly, the water in the lower chamber reversely flushes the ultrafiltration membrane through the backwashing pipeline by utilizing the pressure difference, and pollutants are removed. When the pressure recovers to be greater than the set value of the pressure sensor, the pressure sensor opens the electromagnetic valve, and the device recovers normal filtering work, so that efficient and stable operation of the device is guaranteed, and high-quality purification of the industrial wastewater is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater purification, and specifically refers to a circulating ultrafiltration industrial wastewater purification device. Background Art

[0002] In recent years, the global industry has continued to develop rapidly, and various industrial activities have become increasingly frequent. A large amount of industrial wastewater with complex components is generated during the production processes of industries such as chemical engineering, electroplating, printing and dyeing, and food processing. These wastewaters not only contain a large amount of suspended solids, organic substances, and heavy metal ions, but may also contain acid-base substances and microorganisms, etc. If directly discharged without effective treatment, it will cause serious damage to the ecological environment such as water bodies and soil, threatening human health and ecological balance.

[0003] During the existing purification process, the ultrafiltration membrane is easily contaminated, resulting in a decrease in flux and an increase in resistance. Cleaning or replacement can only be carried out when the device stops, which not only causes a significant reduction in the wastewater treatment efficiency, disrupts the industrial production rhythm, but also increases a large amount of time and economic costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a circulating ultrafiltration industrial wastewater purification device, which solves the problems that the ultrafiltration membrane is easily contaminated, resulting in a decrease in flux and an increase in resistance, and cleaning or replacement can only be carried out when the device stops, which not only causes a significant reduction in the wastewater treatment efficiency, disrupts the industrial production rhythm, but also increases a large amount of time and economic costs.

[0005] In order to achieve the above invention purpose, the technical solution adopted by the present invention is as follows:

[0006] A circulating ultrafiltration industrial wastewater purification device includes a device body. Inside the device body, a filter screen, a partition board, and an ultrafiltration tank are sequentially arranged from top to bottom. An ultrafiltration plate is arranged inside the ultrafiltration tank. A plurality of ultrafiltration membrane modules are arranged on the ultrafiltration plate. The plurality of ultrafiltration membrane modules are arranged in parallel on the ultrafiltration plate. A centrifugal pump group is arranged at the upper end of the ultrafiltration tank. A pressure sensor is connected below the ultrafiltration tank. The other end of the pressure sensor is connected to a water outlet pipe, and a solenoid valve is arranged on the water outlet pipe.

[0007] As an improvement, a water inlet pipe is arranged at the upper end of the device body. The water inlet pipe penetrates through the device body and extends into the inner cavity of the device body. The end of the device body extending into the inner cavity of the device body is fixedly connected to a water outlet tray. The filter screen is inclined to make the wastewater spraying more uniform.

[0008] As an improvement, the partition board is inclined. A floating block is arranged at the upper end of the partition board. A pipe body is arranged inside the floating block. One end of the pipe body is fixedly connected to a flexible hose. The other end of the flexible hose is fixedly connected to a delivery pipe. The other end of the delivery pipe penetrates through the device body and is connected to the centrifugal pump group to convey the filtered wastewater.

[0009] As an improvement, collection boxes are provided on both sides of the device body. Electric telescopic rods are provided in both of the two collection boxes. The telescopic ends of the two electric telescopic rods are fixedly connected with movable plates. Slots are opened on both sides of the device body, and the two slots are respectively located at the bottom ends of the filter screen and the partition board. The slots are matched with the movable plates, and gaskets are provided at the connection parts, which facilitates the cleaning of impurities and sediments.

[0010] As an improvement, a box door is rotatably hinged to the front of the device body, which facilitates the replacement of the ultrafiltration tank.

[0011] The beneficial effects of the present invention are as follows: By setting a centrifugal pump group, an ultrafiltration tank, an ultrafiltration membrane module, a pressure sensor and a solenoid valve, the solenoid valve is closed regularly, and the ultrafiltration membrane module continuously filters. The purified water enters the lower chamber of the ultrafiltration tank, causing the water level to rise, and the gas above the ultrafiltration membrane, thereby storing energy. When the pressure in the ultrafiltration tank is higher than the pressure in the ultrafiltration membrane module, under the action of the pressure difference, the water in the lower chamber flows through the backwash pipeline to the ultrafiltration membrane module to perform reverse flushing on the ultrafiltration membrane. When the pressure is greater than the pressure sensor, the pressure sensor opens the solenoid valve to maintain normal operation. Description of the Drawings

[0012] Figure 1 is the front view of a circulating ultrafiltration industrial wastewater purification device of the present invention;

[0013] Figure 2 is the internal schematic diagram of a circulating ultrafiltration industrial wastewater purification device of the present invention;

[0014] Figure 3 is the ultrafiltration plate schematic diagram of a circulating ultrafiltration industrial wastewater purification device of the present invention;

[0015] Figure 4 is the bottom view of the water outlet tray of a circulating ultrafiltration industrial wastewater purification device of the present invention.

[0016] In the figure: 1, device body; 2, water inlet pipe; 3, collection box; 4, electric telescopic rod; 5, movable plate; 6, water outlet tray; 7, floating block; 8, pipe body; 9, hose; 10, delivery pipe; 11, partition board; 12, centrifugal pump group; 13, ultrafiltration tank; 14, ultrafiltration plate; 15, water outlet pipe; 16, pressure sensor; 17, solenoid valve; 18, box door; 19, filter screen; 20, ultrafiltration membrane module. Detailed Embodiments

[0017] In order to make the content of the present invention easier to be clearly understood, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0018] As Figure 1 shown in Figure 4 the figure, a circulating ultrafiltration industrial wastewater purification device includes a device body 1. Inside the device body 1, a filter screen 19, a partition plate 11 and an ultrafiltration tank 13 are successively arranged from top to bottom. Inside the ultrafiltration tank 13, an ultrafiltration plate 14 is provided. On the ultrafiltration plate 14, a plurality of ultrafiltration membrane modules 20 are provided. The plurality of ultrafiltration membrane modules 20 are arranged in parallel on the ultrafiltration plate 14. At the upper end of the ultrafiltration tank 13, a centrifugal pump group 12 is provided. Below the ultrafiltration tank 13, a pressure sensor 16 is connected. The other end of the pressure sensor 16 is connected to a water outlet pipe 15. An electromagnetic valve 17 is provided on the water outlet pipe 15. The partition plate 11 is inclined. At the upper end of the partition plate 11, a floating block 7 is provided. Inside the floating block 7, a pipe body 8 is provided. One end of the pipe body 8 is fixedly connected to a hose 9. The other end of the hose 9 is fixedly connected to a delivery pipe 10. The other end of the delivery pipe 10 penetrates through the device body 1 and is connected to the centrifugal pump group 12 to convey the filtered wastewater.

[0019] At the upper end of the device body 1, a water inlet pipe 2 is provided. The water inlet pipe 2 penetrates through the device body 1 and extends into the inner cavity of the device body 1. The end of the device body 1 extending into the inner cavity of the device body 1 is fixedly connected to a water outlet tray 6. The filter screen 19 is inclined to make the wastewater spraying more uniform.

[0020] Collection boxes 3 are provided on both sides of the device body 1. Inside the two collection boxes 3, electric telescopic rods 4 are provided. The telescopic ends of the two electric telescopic rods 4 are fixedly connected to movable plates 5. Slots are opened on both sides of the device body 1. The two slots are respectively located at the bottom ends of the filter screen 19 and the partition plate 11. The slots cooperate with the movable plates 5, and a sealing gasket is provided at the connection to facilitate the cleaning of impurities and sediments. A box door 18 is rotatably hinged to the front of the device body 1 to facilitate the replacement of the ultrafiltration tank 13.

[0021] When in use, industrial wastewater first enters the device body 1 through the water inlet pipe 2. The water outlet tray 6 can make the wastewater spray evenly on the inclined filter net 19. The filter net 19 will intercept large particle impurities and suspended substances in the wastewater, playing a role of preliminary filtration. As the wastewater continuously flows in, the intercepted impurities and sediments will slide down along the inclined filter net 19 to the slots on both sides of the device body 1. According to the actual accumulation situation of impurities, the electric telescopic rod 4 in the collection box 3 can be started regularly. The electric telescopic rod 4 pushes the movable plate 5 to move, opening the slots, so that the impurities and sediments can smoothly fall into the collection box 3, completing the cleaning work of the impurities. The wastewater after preliminary filtration continues to flow downward to the inclined partition plate 11. The floating block 7 at the upper end of the partition plate 11 will float up and down with the change of the water level. The pipe body 8 is always in a suitable position to collect the relatively clear wastewater in the upper layer. The collected wastewater enters the hose 9 through the pipe body 8 and is then conveyed to the centrifugal pump group 12 via the conveying pipe 10. The centrifugal pump group 12 pressurizes the wastewater and sends it into the ultrafiltration tank 13. In the ultrafiltration tank 13, the wastewater will come into full contact with multiple ultrafiltration membrane modules 20 arranged in parallel on the ultrafiltration plate 14. The ultrafiltration membrane modules 20 carry out fine filtration on the wastewater, intercepting small molecule organic matters, colloids, bacteria and other impurities in it, so that the wastewater is deeply purified. During the filtration process, the pressure sensor 16 will monitor the pressure change in the ultrafiltration tank 13 in real time. When the pressure is normal, the solenoid valve 17 remains open, and the purified water flows out of the device through the water outlet pipe 15. As the filtration continues, pollutants will gradually accumulate on the surface of the ultrafiltration membrane modules 20, resulting in an increase in the filtration resistance. At this time, according to the preset time interval, the solenoid valve 17 is closed regularly. The ultrafiltration membrane modules 20 continue to filter the wastewater, and the purified water continuously enters the lower chamber of the ultrafiltration tank 13, causing the water level to rise and compressing the gas above the ultrafiltration membrane, thereby storing energy. When the pressure in the ultrafiltration tank 13 is higher than the pressure in the ultrafiltration membrane modules 20, under the action of the pressure difference, the water stored in the lower chamber will quickly flow to the ultrafiltration membrane modules 20 through the backwashing pipeline to carry out reverse flushing on the ultrafiltration membrane, effectively removing the pollutants on the surface and in the pores of the ultrafiltration membrane and restoring the filtration performance of the ultrafiltration membrane. When the backwashing restores the pressure to normal and the pressure is greater than the set value of the pressure sensor 16, the pressure sensor 16 will send a signal to open the solenoid valve 17, and the device resumes the normal filtration working state. If it is necessary to maintain the ultrafiltration tank 13 or replace the ultrafiltration membrane modules 20, just rotate the box door 18 hinged on the front of the device body 1, and the operation can be conveniently carried out.

[0022] The above is only a preferred embodiment of the present invention patent and is not intended to limit the present invention patent. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention patent shall be included in the protection scope of the present invention patent.

Claims

1. A circulating ultrafiltration industrial wastewater purification device, comprising a device body (1), characterized in that, Inside the device body (1), a filter screen (19), a partition plate (11), and an ultrafiltration tank (13) are successively arranged from top to bottom. An ultrafiltration plate (14) is arranged inside the ultrafiltration tank (13), and a plurality of ultrafiltration membrane modules (20) are arranged on the ultrafiltration plate (14). The plurality of ultrafiltration membrane modules (20) are arranged in parallel on the ultrafiltration plate (14). A centrifugal pump group (12) is arranged at the upper end of the ultrafiltration tank (13). A pressure sensor (16) is connected below the ultrafiltration tank (13), and the other end of the pressure sensor (16) is connected to a water outlet pipe (15). An electromagnetic valve (17) is arranged on the water outlet pipe (15).

2. The circulating ultrafiltration industrial wastewater purification device according to claim 1, wherein, An inlet pipe (2) is arranged at the upper end of the device body (1). The inlet pipe (2) penetrates through the device body (1) and extends into the inner cavity of the device body (1). The end of the device body (1) extending into the inner cavity of the device body (1) is fixedly connected to a water outlet tray (6). The filter screen (19) is inclined.

3. A cyclic ultrafiltration industrial wastewater purification device according to claim 1, characterized in that, The partition plate (11) is inclined. A floating block (7) is arranged at the upper end of the partition plate (11). A pipe body (8) is arranged inside the floating block (7). One end of the pipe body (8) is fixedly connected to a flexible hose (9). The other end of the flexible hose (9) is fixedly connected to a delivery pipe (10). The other end of the delivery pipe (10) penetrates through the device body (1) and is connected to the centrifugal pump group (12).

4. A circulating ultrafiltration industrial wastewater purification device according to claim 1, characterized in that, Collection boxes (3) are arranged on both sides of the device body (1). Electric telescopic rods (4) are arranged inside the two collection boxes (3). The telescopic ends of the two electric telescopic rods (4) are fixedly connected to movable plates (5). Slots are opened on both sides of the device body (1). The two slots are respectively located at the bottom ends of the filter screen (19) and the partition plate (11). The slots are matched with the movable plates (5), and a sealing gasket is arranged at the connection part.

5. The circulating ultrafiltration industrial wastewater purification device according to claim 1, characterized in that, A box door (18) is rotatably hinged to the front of the device body (1).

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