Electrochemical treatment device for wastewater containing heavy metals

Abstract

The utility model provides an electrochemical treatment device for wastewater containing heavy metals. The electrochemical treatment device comprises an electrochemical treatment device, the mud bucket is fixedly mounted at the bottom of the electrochemical treatment device, a mud cavity is formed in the top of the mud bucket, and a mounting column is fixedly mounted in the middle of the bottom of the mud bucket. According to the electrochemical treatment device for the wastewater containing the heavy metals, the first sliding block and the fixed block are driven to move in the mud bucket by pulling the moving rod, the connecting block is pulled to slide on the surface of the mud cavity, and the scraping plate slides on the surface of the mud cavity and scrapes sediments adhered to the surface of the mud cavity. Sediments adhered to the surface of the mud cavity can be quickly cleaned, the surface of the mud cavity is kept clean, and the cleaning effect on the sediments in the mud bucket is improved by matching with discharge of the mud discharge pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wastewater treatment especially relates to an electrochemical treatment device for heavy metal-containing wastewater. BACKGROUND

[0002] A large amount of rinsing wastewater is often generated in the process of electroplating and copper foil production, and the rinsing wastewater contains heavy metal ions such as nickel and copper, which has great toxicity and high recycling value.

[0003] At present, the main methods for treating the above rinsing wastewater are chemical precipitation method, ion exchange method and membrane separation method. The main advantage of the chemical precipitation method is simple equipment and low investment, but a large amount of chemical drugs need to be consumed, and the generated precipitate is difficult to be directly reused in production due to the introduction of a large amount of chemical impurities. The advantage of the ion exchange method is high treatment efficiency, but the invalid ion exchange resin needs to be regenerated repeatedly, which is complicated to operate, and a large amount of chemical impurities are also introduced in the regenerated waste liquid, which is also difficult to be directly reused in production. With the rapid development of membrane separation technology, the application of membrane separation method in the rinsing wastewater of electroplating and copper foil production is increasing day by day. After the reverse osmosis treatment of the rinsing wastewater, the rinsing wastewater is separated into fresh water and concentrated water. The fresh water is recycled as raw water of the deionized water preparation system, and the concentrated water is further concentrated by reverse osmosis and nanofiltration. The high-concentration concentrated liquid obtained is finally reused in production. The above-mentioned membrane separation method has good treatment effect, does not introduce impurities in the treatment process, and can recycle all the concentrated liquid, but involves many membrane separation stages, high investment and high operation cost.

[0004] The electrochemical treatment device for heavy metal-containing wastewater provided by the utility model can simply and effectively shunt the cathode water and the anode water, effectively inhibit the anode water with high acidity from entering the cathode chamber, promote the heavy metal ions in the cathode water to be efficiently removed by forming hydroxide precipitate, and make the electrochemical deposits fall into the mud bucket and be discharged through the mud discharge valve. However, water exists on the surface of the deposits and adheres to the surface of the cavity wall of the mud bucket, which cannot be discharged, affecting the sewage discharge effect of the mud bucket.

[0005] Therefore, it is necessary to provide an electrochemical treatment device for heavy metal-containing wastewater to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model provides an electrochemical treatment device for heavy metal-containing wastewater, which solves the problem of water existing on the surface of the deposits and adhering to the surface of the cavity wall of the mud bucket, which cannot be discharged, affecting the sewage discharge effect of the mud bucket.

[0007] To solve the above technical problems, the utility model provides an electrochemical treatment device for heavy metal-containing wastewater, which comprises an electrochemical treatment device.

[0008] The mud bucket is fixedly installed at the bottom of the electrochemical treatment device, a mud cavity is formed at the top of the mud bucket, a mounting column is fixedly installed at the middle of the bottom of the mud bucket, the mounting column comprises a column rod, a communication hole, a sliding groove, a sliding rod and a first spring;

[0009] The pulling device is slidably installed in the inside of the mounting column, and the pulling device comprises a moving rod, a first sliding block, a fixed block, a moving groove, a limiting rod and a second spring.

[0010] The cleaning device is slidably installed on the two sides of the outer surface of the pulling device, and the cleaning device comprises a connecting block, a scraper and a second sliding block.

[0011] Preferably, the column rod is fixedly installed at the middle of the bottom of the mud bucket, the communication hole is formed at the middle of the bottom of the column rod, the two sliding grooves are formed on the two sides of the inner cavity wall of the communication hole, the sliding rod is fixedly installed in the inside of the sliding groove, and the first spring is sleeved on one side of the outer surface of the sliding rod.

[0012] Preferably, the moving rod is slidably installed in the inside of the communication hole, the two first sliding blocks are fixedly installed on the two sides of the outer surface of the moving rod, the two fixed blocks are fixedly installed on the two sides of the top of the outer surface of the moving rod, the moving groove is formed at the middle of the top of the fixed block, the limiting rod is fixedly installed in the inside of the moving groove, and the second spring is sleeved on one side of the outer surface of the limiting rod.

[0013] Preferably, the second sliding block is sleeved on the other side of the outer surface of the limiting rod, the connecting block is fixedly connected to one side of the second sliding block, and the scraper is fixedly installed on one side of the connecting block.

[0014] Preferably, one side of the inside of the electrochemical treatment device is provided with a water inlet area.

[0015] Preferably, one side of the outer surface of the mud bucket is fixedly installed with a mud discharge pipe, and one side of the top of the electrochemical treatment device is provided with an electrode area.

[0016] Preferably, one side of the surface of the scraper is formed with a recovery groove.

[0017] Compared with the related art, the electrochemical treatment device for heavy metal-containing wastewater has the following beneficial effects:

[0018] This invention provides an electrochemical treatment device for wastewater containing heavy metals. By pulling a moving rod, the first slider and the fixed block move inside the sludge hopper. Pulling the connecting block slides on the surface of the sludge chamber. The scraper slides on the surface of the sludge chamber and scrapes off the sediments adhering to the surface of the sludge chamber. This device has a simple structure and strong practicality. It can quickly clean the sediments adhering to the surface of the sludge chamber, keep the surface of the sludge chamber clean, and improve the cleaning effect of the sediments inside the sludge hopper when used with the sludge discharge pipe. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the first embodiment of the electrochemical treatment device for heavy metal wastewater provided by this utility model;

[0020] Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown below;

[0021] Figure 3 for Figure 1 The diagram shows the structure of the cleaning device.

[0022] Figure 4 for Figure 1 The diagram shows the structure of the pulling device;

[0023] Figure 5 This is a schematic diagram of the second embodiment of an electrochemical treatment device for heavy metal-containing wastewater provided by this utility model.

[0024] The diagram is labeled as follows: 1. Electrochemical treatment device; 2. Sludge hopper; 3. Water inlet area; 4. Electrode area; 5. Sludge chamber; 6. Mounting column; 61. Column rod; 62. Connecting hole; 63. Slide groove; 64. Slide rod; 65. First spring; 7. Pulling device; 71. Moving rod; 72. First slider; 73. Fixed block; 74. Moving groove; 75. Limiting rod; 76. Second spring; 8. Cleaning device; 81. Connecting block; 82. Scraper; 83. Second slider; 9. Sludge discharge pipe; 10. Recovery tank. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] First Embodiment

[0027] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of the structure of the first embodiment of the electrochemical treatment device for heavy metal wastewater provided by this utility model; Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown below; Figure 3As Figure 1 The cleaning device structure schematic view shown in the figure; Figure 4 As Figure 1 The pulling device structure schematic view shown in the figure. An electrochemical treatment device for heavy metal-containing wastewater, comprising: an electrochemical treatment device 1;

[0028] A hopper 2 is fixedly installed at the bottom of the electrochemical treatment device 1, a mud cavity 5 is formed at the top of the hopper 2, a mounting column 6 is fixedly installed in the middle of the bottom of the hopper 2, and the mounting column 6 comprises a column rod 61, a communication hole 62, a sliding groove 63, a sliding rod 64 and a first spring 65;

[0029] A pulling device 7 is slidingly installed in the inside of the mounting column 6, and the pulling device 7 comprises a moving rod 71, a first sliding block 72, a fixed block 73, a moving groove 74, a limiting rod 75 and a second spring 76;

[0030] Two cleaning devices 8 are slidingly installed on both sides of the outer surface of the pulling device 7, and each cleaning device 8 comprises a connecting block 81, a scraper 82 and a second sliding block 83.

[0031] The column rod 61 is fixedly installed in the middle of the bottom of the hopper 2, the communication hole 62 is formed in the middle of the bottom of the column rod 61, two sliding grooves 63 are formed on both sides of the inner cavity wall of the communication hole 62, the sliding rod 64 is fixedly installed in the inside of the sliding groove 63, and the first spring 65 is sleeved on one side of the outer surface of the sliding rod 64.

[0032] The moving rod 71 is slidingly installed in the inside of the communication hole 62, two first sliding blocks 72 are fixedly installed on both sides of the outer surface of the moving rod 71, two fixed blocks 73 are fixedly installed on both sides of the top of the outer surface of the moving rod 71, the moving groove 74 is formed in the middle of the top of the fixed block 73, the limiting rod 75 is fixedly installed in the inside of the moving groove 74, and the second spring 76 is sleeved on one side of the outer surface of the limiting rod 75.

[0033] The second sliding block 83 is sleeved on the other side of the outer surface of the limiting rod 75, the connecting block 81 is fixedly connected to one side of the second sliding block 83, and the scraper 82 is fixedly installed on one side of the connecting block 81.

[0034] One side of the inside of the electrochemical treatment device 1 is provided with a water inlet area 3.

[0035] One side of the outer surface of the hopper 2 is fixedly installed with a mud discharge pipe 9, and one side of the top of the electrochemical treatment device 1 is provided with an electrode area 4.

[0036] The working principle of the electrochemical treatment device for heavy metal-containing wastewater is as follows:

[0037] In working, first, the user holds the moving rod 71 and pulls it downward, the moving rod 71 drives the first sliding block 72 and the fixed block 73 to move downward, the first sliding block 72 slides downward on the surface of the slide rod 64 and extrudes the first spring 65, the fixed block 73 pulls the second sliding block 83 to move downward, the second sliding block 83 drives the scraper 82 and the connecting block 81 to move downward.

[0038] The scraper 82 is extruded by the mud cavity 5 to move to the side close to the moving rod 71, the scraper 82 drives the connecting block 81 and the second sliding block 83 to move, and the second sliding block 82 slides along the limiting rod 75 and extrudes the second spring 76.

[0039] The scraper 82 slides downward along the wall of the mud cavity 2 and scrapes off the deposits adhered to the surface of the mud cavity 5.

[0040] The user releases the moving rod 71, the restoring force of the first spring 65 pushes the first sliding block 72 to move upward, the second spring 83 pushes the second sliding block 83 to move to the side away from the moving rod 71, so that the scraper 82 is closely attached to the surface of the mud cavity 5.

[0041] Compared with the related art, the electrochemical treatment device for heavy metal-containing wastewater has the following beneficial effects:

[0042] The electrochemical treatment device for heavy metal-containing wastewater provided by the utility model moves the first sliding block 72 and the fixed block 73 in the mud bucket 2 by pulling the moving rod 71, pulls the connecting block 81 to slide on the surface of the mud cavity 5, and the scraper 82 slides on the surface of the mud cavity 5 and scrapes off the deposits adhered to the surface of the mud cavity 5.

[0043] Second embodiment

[0044] Please refer to Figure 5 , based on the first embodiment of the application, the second embodiment of the application provides another electrochemical treatment device for heavy metal-containing wastewater. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the separate implementation of the first embodiment.

[0045] Specifically, the electrochemical treatment device for heavy metal-containing wastewater provided by the second embodiment of the application is different from the first embodiment in that the surface of the scraper 82 is provided with a recovery groove 10.

[0046] The working principle of the electrochemical treatment device for heavy metal-containing wastewater is as follows:

[0047] In work, first, the recovery groove 10 is arranged on the surface of the scraper 82, so that when the scraper 82 restores to the top of the surface of the mud cavity 5, the deposits scraped upward by the scraper 82 from the surface of the mud cavity 5 fall downward from the recovery groove 10.

[0048] Compared with the related art, the electrochemical treatment device for heavy metal-containing wastewater has the following beneficial effects:

[0049] The electrochemical treatment device for heavy metal-containing wastewater is simple in structure and high in practicability, and the scraper 82 restores under the spring thrust to clean the deposits on the surface of the mud cavity 5 again, so that the accumulation of the deposits that are not cleaned is avoided.

[0050] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An electrochemical treatment device for wastewater containing heavy metals, characterized in that, include: Electrochemical treatment device; A mud hopper is fixedly installed at the bottom of the electrochemical treatment device. A mud cavity is opened at the top of the mud hopper, and an installation column is fixedly installed in the middle of the bottom of the mud hopper. The installation column includes a column rod, a connecting hole, a sliding groove, a sliding rod, and a first spring. A pulling device is slidably installed inside the mounting column. The pulling device includes a moving rod, a first slider, a fixed block, a moving groove, a limiting rod, and a second spring. The cleaning device comprises two cleaning devices that are slidably mounted on both sides of the outer surface of the pulling device, and each cleaning device includes a connecting block, a scraper, and a second slider.

2. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, The column rod is fixedly installed in the middle of the bottom of the mud bucket, the connecting hole is opened in the middle of the bottom of the column rod, the two sliding grooves are respectively opened on both sides of the inner wall of the connecting hole, the sliding rod is fixedly installed inside the sliding groove, and the first spring is sleeved on one side of the outer surface of the sliding rod.

3. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, The movable rod is slidably installed inside the communicating hole. The two first sliders are respectively fixedly installed on both sides of the outer surface of the movable rod. The two fixed blocks are respectively fixedly installed on both sides of the top of the outer surface of the movable rod. The movable groove is opened in the middle of the top of the fixed block. The limiting rod is fixedly installed inside the movable groove. The second spring is sleeved on one side of the outer surface of the limiting rod.

4. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, The second slider is sleeved on the other side of the outer surface of the limiting rod, the connecting block is fixedly connected to one side of the second slider, and the scraper is fixedly installed on one side of the connecting block.

5. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, A water inlet area is provided on one side of the interior of the electrochemical treatment device.

6. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, A sludge discharge pipe is fixedly installed on one side of the outer surface of the sludge hopper, and an electrode area is provided on one side of the top of the electrochemical treatment device.

7. The electrochemical treatment device for heavy metal-containing wastewater according to claim 1, characterized in that, A recycling trough is provided on one side of the scraper surface.

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