Equipment for removing EDTA (Ethylene Diamine Tetraacetic Acid) and complex thereof in purification process

Abstract

The utility model relates to the technical field of industrial wastewater treatment, in particular to removal equipment for EDTA (Ethylene Diamine Tetraacetic Acid) and a complex thereof in a purification process. The utility model provides removal equipment for EDTA (Ethylene Diamine Tetraacetic Acid) and complexes thereof in a purification process. The removal equipment comprises a reaction tank, a settling tank, a second ball valve, a second motor, a mounting cylinder, a filter block, a scraping frame, a discharge hole and the like, a second ball valve is arranged on the left side of the lower part of the settling tank; a second motor is arranged in the middle of the outer bottom of the settling tank; a plurality of filter blocks are circumferentially arranged on the mounting cylinder; a scraping frame is arranged on the lower part of the mounting cylinder; according to the device disclosed by the utility model, wastewater after reaction enters the settling tank, the wastewater flows into the lower layer of the settling tank through the filter block, EDTA (Ethylene Diamine Tetraacetic Acid) and a complex thereof are separated from the wastewater after reaction, a second ball valve is opened to enable the wastewater to flow out, a second motor is opened, a scraping frame starts to move, and sediments are scraped into a discharge hole, so that the effect of cleaning the sediments is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to a device for removing EDTA and its complex in a purification process. Background Art

[0002] EDTA is a representative substance of chelating agents, which can form stable water-soluble complexes with alkali metals, rare earth elements and transition metals. If EDTA and its complexes are not cleaned before reverse osmosis of rinse wastewater, serious membrane blockage will occur during the reverse osmosis process of reclaimed water reuse.

[0003] In the existing methods for removing EDTA and its complexes, the effect of removing EDTA and its complexes in wastewater is generally achieved by reacting EDTA and its complexes with other compounds and irradiating them with ultraviolet rays. After the wastewater is treated to remove EDTA and its complexes, the removed EDTA and its complexes are precipitated in the device. Because the device is difficult to disassemble, the precipitate is difficult to clean.

[0004] It is now necessary to develop a device for removing EDTA and its complexes in the purification process that can easily remove precipitates. Utility Model Content

[0005] In order to overcome the shortcoming that the precipitate is difficult to clean in the existing method for removing EDTA and its complex, the utility model provides a device for removing EDTA and its complex in the purification process which is easy to remove the precipitate.

[0006] In order to solve the above technical problems, the utility model provides a device for removing EDTA and its complex in a purification process, comprising a reaction tank, a stopper, a first ball valve, an ultraviolet lamp, a first motor, a stirring rod, a precipitation tank, a second ball valve, a second motor, a mounting cylinder, a scraper rack and a discharge port, wherein a precipitation tank is mounted below the reaction tank, the reaction tank is funnel-shaped as a whole, a hole communicating with the precipitation tank is provided at the bottom of the reaction tank, the bottom of the precipitation tank has two layers, an upper and lower layer, a stopper is provided on the left side of the upper part of the reaction tank, a first ball valve is provided on the upper right part of the reaction tank, an ultraviolet lamp is provided on the rear side of the top of the reaction tank, a first motor is provided in the middle above the reaction tank, a stirring rod is connected to the output shaft of the first motor, a second ball valve is provided on the left side of the lower part of the precipitation tank, a pipeline of the second ball valve is communicated with the lower layer inside the precipitation tank, a second motor is provided in the middle of the outer bottom of the precipitation tank, a mounting cylinder is installed in the middle of the bottom of the upper layer of the precipitation tank, the upper end of the output shaft of the second motor is connected to the mounting cylinder, a scraper rack is installed at the lower part of the mounting cylinder, and a discharge port communicating with the outside of the device is provided on the right side of the bottom of the upper layer of the precipitation tank.

[0007] Preferably, it also includes a rotating rod and a sealing plate. Rotating rods are installed on the left and right sides of the bottom of the reaction tank. A sealing plate is provided between the two rotating rods. One end of the two rotating rods is connected to the sealing plate, and the other ends of the two rotating rods pass through the precipitation tank and extend outward.

[0008] Preferably, a handle is also included, and a handle is provided at the left end of the rotating rod on the left side of the bottom of the reaction tank.

[0009] Preferably, it also includes a mounting block, a spring and a clamping block. A mounting block is provided on the upper right side of the sedimentation tank, four clamping blocks are evenly arranged inside the mounting block, springs are sleeved on the four clamping blocks, and both ends of the four springs are connected to the clamping block and the mounting block.

[0010] Preferably, a rubber sleeve is also included. The inner sides of the four clamping blocks are all sleeved with the rubber sleeve, and the rubber sleeve contacts the right end of the rotating rod on the right side of the bottom of the reaction tank.

[0011] Preferably, a filter block is also included, and a plurality of filter blocks are circumferentially arranged on the mounting cylinder.

[0012] The beneficial effects of the utility model are as follows: 1. The utility model allows the wastewater after the reaction to enter the sedimentation tank, and the wastewater will flow into the lower layer of the sedimentation tank through the filter block, so as to separate EDTA and its complex from the wastewater after the reaction, open the second ball valve to make the wastewater flow out, turn on the second motor, and the scraper frame starts to move to scrape the sediment into the discharge port, so as to achieve the effect of cleaning the sediment.

[0013] 2. The utility model rotates the rotating rod to make the sealing plate seal the hole between the reaction tank and the precipitation tank, thereby blocking the connection between the reaction tank and the precipitation tank, thereby achieving the effect of separating the reaction area of ​​the wastewater from the precipitation area of ​​EDTA and its complex. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the ultraviolet lamp, the first motor and the stirring rod of the utility model.

[0016] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the rotating rod, sealing plate and mounting block of the utility model.

[0017] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the installation block, spring and clamping block of the utility model.

[0018] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the second motor, the mounting cylinder and the filter block of the utility model.

[0019] The markings in the accompanying drawings are: 1-reaction tank, 2-stopper, 3-first ball valve, 4-ultraviolet lamp, 5-first motor, 6-stirring rod, 7-sedimentation tank, 8-second ball valve, 9-handle, 10-rotating rod, 11-sealing plate, 12-mounting block, 13-spring, 14-clamping block, 15-rubber sleeve, 16-second motor, 17-mounting cylinder, 18-filter block, 19-scraper rack, 20-discharge port. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Example 1

[0022] A device for removing EDTA and its complexes in a purification process, such as Figure 1-Figure 5 As shown, it includes a reaction tank 1, a stopper 2, a first ball valve 3, an ultraviolet lamp 4, a first motor 5, a stirring rod 6, a sedimentation tank 7, a second ball valve 8, a second motor 16, a mounting tube 17, a filter block 18, a scraper frame 19 and a discharge port 20. The sedimentation tank 7 is installed below the reaction tank 1. The reaction tank 1 is funnel-shaped as a whole. A hole communicating with the sedimentation tank 7 is opened at the bottom of the reaction tank 1. The hole at the bottom of the reaction tank 1 facilitates wastewater to flow from the reaction tank 1 into the sedimentation tank 7. The bottom part of the sedimentation tank 7 has two layers, an upper and lower layer. The stopper 2 is provided on the left side of the upper part of the reaction tank 1, the first ball valve 3 is provided on the upper right part of the reaction tank 1, an ultraviolet lamp 4 is provided on the rear side of the top of the reaction tank 1, a first motor 5 is provided in the middle of the upper part of the reaction tank 1, and a stirring rod 6 is provided on the output shaft of the first motor 5. Rod 6, the stirring of stirring rod 6 allows the wastewater to fully react with the compound, a second ball valve 8 is provided on the left side of the lower part of the sedimentation tank 7, and the pipeline of the second ball valve 8 is connected to the lower layer of the sedimentation tank 7. The pipeline of the second ball valve 8 is used for the wastewater from which EDTA and its complex have been removed to flow out, a second motor 16 is provided in the middle of the outer bottom of the sedimentation tank 7, a mounting cylinder 17 is installed in the middle of the upper bottom of the sedimentation tank 7, the upper end of the output shaft of the second motor 16 is connected to the mounting cylinder 17, a plurality of filter blocks 18 are provided circumferentially on the mounting cylinder 17, the filter blocks 18 are used to filter EDTA and its complexes, a scraper frame 19 is installed at the lower part of the mounting cylinder 17, the scraper frame 19 is used to clean the sediment in the sedimentation tank 7, and a discharge port 20 communicating with the outside of the device is provided on the right side of the upper bottom of the sedimentation tank 7.

[0023] When EDTA and its complex need to be removed from wastewater, the EDTA and its complex removal device in the purification process can be used. First, the connection between the reaction tank 1 and the precipitation tank 7 is blocked, and then the first ball valve 3 is opened to allow the wastewater to enter the reaction tank 1. The plug 2 is opened and the compound is poured into the reaction tank 1. The plug 2 is closed and the first motor 5 is turned on. The first motor 5 drives the stirring rod 6 to start stirring the wastewater and the compound to make the compound and the wastewater react more fully. The ultraviolet lamp 4 is turned on to separate EDTA and its complex from the wastewater. After the reaction is completed, the ultraviolet lamp 4 is turned off, the first motor 5 is turned off, and the stirring rod 6 is turned on. Plug 2, put the chemicals needed for precipitating EDTA and its complex into the reaction tank 1, close the plug 2, let the wastewater settle for a while, then open the hole connecting the reaction tank 1 and the precipitation tank 7, let the wastewater after the reaction enter the precipitation tank 7, the wastewater will flow into the lower layer of the precipitation tank 7 through the filter block 18, EDTA and its complex will be retained in the upper layer of the precipitation tank 7 because of the filter block 18, open the second ball valve 8, connect the separated wastewater, turn on the second motor 16, the scraper frame 19 starts to move, and the sediment is scraped into the discharge port 20. After the sediment is cleaned, turn off the second motor 16.

[0024] Example 2

[0025] On the basis of Example 1, Figure 3 and Figure 4 As shown, it also includes a handle 9, a rotating rod 10, a sealing plate 11, a mounting block 12, a spring 13, a clamping block 14 and a rubber sleeve 15. The rotating rods 10 are installed on both sides of the bottom of the reaction tank 1. A sealing plate 11 is provided between the two rotating rods 10. The sealing plate 11 is used to block the communication between the reaction tank 1 and the precipitation tank 7 to prevent waste water from flowing into the precipitation tank 7 without a complete reaction. One end of the two rotating rods 10 is connected to the sealing plate 11, and the other ends of the two rotating rods 10 extend outward through the precipitation tank 7. The left rotating rod 10 on the left side of the bottom of the reaction tank 1 A handle 9 is provided at the end, and the handle 9 makes the rotation of the rotating rod 10 easier. A mounting block 12 is provided on the upper right side of the sedimentation tank 7, and four clamping blocks 14 are evenly arranged inside the mounting block 12. Springs 13 are sleeved on the four clamping blocks 14, and both ends of the four springs 13 are connected to the clamping blocks 14 and the mounting block 12. Rubber sleeves 15 are sleeved on the inner sides of the four clamping blocks 14, and the rubber sleeves 15 contact the right end of the rotating rod 10 on the right side of the bottom of the reaction tank 1. The rubber sleeve 15 increases the friction between the clamping block 14 and the rotating rod 10, fixes the rotating rod 10, and prevents the rotating rod 10 from rotating.

[0026] When the connection between the reaction tank 1 and the sedimentation tank 7 is to be blocked, first hold the handle 9 and rotate the rotating rod 10 so that the sealing plate 11 seals the hole communicating between the reaction tank 1 and the sedimentation tank 7, blocking the connection between the reaction tank 1 and the sedimentation tank 7, and then hold the mounting block 12 by hand to compress the spring 13 and the rubber sleeve 15 between the clamping block 14 and the rotating rod 10 to increase the friction between the clamping block 14 and the rotating rod 10 so that the clamping block 14 can better fix the rotating rod 10 to prevent the sealing plate 11 from moving. When the reaction is completed and the hole communicating between the reaction tank 1 and the sedimentation tank 7 needs to be opened, hold the mounting block 12 to restore the spring 13 and the clamping block 14 to release the rotating rod 10. Hold the handle 9 and rotate the rotating rod 10 to rotate the sealing plate 11 to open the hole communicating between the reaction tank 1 and the sedimentation tank 7, so that the waste water after the reaction is completed can enter the sedimentation tank 7.

[0027] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A device for removing EDTA and its complexes in a purification process, characterized in that: The invention comprises a reaction tank (1), a stopper (2), a first ball valve (3), an ultraviolet lamp (4), a first motor (5), a stirring rod (6), a precipitation tank (7), a second ball valve (8), a second motor (16), a mounting tube (17), a scraper frame (19) and a discharge port (20). The precipitation tank (7) is mounted below the reaction tank (1). The reaction tank (1) is funnel-shaped as a whole. A hole communicating with the precipitation tank (7) is provided at the bottom of the reaction tank (1). The bottom of the precipitation tank (7) has two layers, an upper layer and an lower layer. A stopper (2) is provided on the left side of the upper part of the reaction tank (1). The first ball valve (3) is provided on the upper right part of the reaction tank (1). The rear side of the top of the reaction tank (1) is provided with a stopper (2). An ultraviolet lamp (4) is provided. A first motor (5) is provided in the middle of the upper part of the reaction tank (1). A stirring rod (6) is connected to the output shaft of the first motor (5). A second ball valve (8) is provided on the left side of the lower part of the precipitation tank (7). The pipeline of the second ball valve (8) is communicated with the lower layer of the precipitation tank (7). A second motor (16) is provided in the middle of the outer bottom of the precipitation tank (7). A mounting cylinder (17) is installed in the middle of the upper bottom of the precipitation tank (7). The upper end of the output shaft of the second motor (16) is connected to the mounting cylinder (17). A scraper frame (19) is installed at the lower part of the mounting cylinder (17). A discharge port (20) communicating with the outside of the device is provided on the right side of the upper bottom of the precipitation tank (7).

2. The device for removing EDTA and its complexes in a purification process according to claim 1, characterized in that: The invention also comprises a rotating rod (10) and a sealing plate (11), wherein the rotating rods (10) are installed on both left and right sides of the bottom of the reaction tank (1), a sealing plate (11) is arranged between the two rotating rods (10), one end of the two rotating rods (10) is connected to the sealing plate (11), and the other ends of the two rotating rods (10) pass through the precipitation tank (7) and extend outward.

3. The device for removing EDTA and its complexes in a purification process according to claim 2, characterized in that: It also includes a handle (9), and the left end of the rotating rod (10) on the left side of the bottom of the reaction tank (1) is provided with the handle (9).

4. The device for removing EDTA and its complexes in a purification process according to claim 3, characterized in that: The device also comprises a mounting block (12), a spring (13) and a clamping block (14); the mounting block (12) is arranged on the right side of the upper part of the sedimentation tank (7); four clamping blocks (14) are evenly arranged inside the mounting block (12); springs (13) are sleeved on the four clamping blocks (14); and both ends of the four springs (13) are connected to the clamping block (14) and the mounting block (12).

5. The device for removing EDTA and its complexes in a purification process according to claim 4, characterized in that: It also includes a rubber sleeve (15), the inner sides of the four clamping blocks (14) are all sleeved with the rubber sleeve (15), and the rubber sleeve (15) contacts the right end of the rotating rod (10) on the right side of the bottom of the reaction tank (1).

6. The device for removing EDTA and its complexes in a purification process according to claim 5, characterized in that: It also includes a filter block (18), and a plurality of filter blocks (18) are circumferentially arranged on the mounting cylinder (17).

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