Medical wastewater pretreatment device for iron-carbon micro-electrolysis

Abstract

The invention provides an iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device structurally comprises a positioning bracket, a reactor, a control panel, an output pump and a water injection interception structure, on the basis of the reactor, the acidic condition of the medical wastewater is judged through the pH value monitoring module on the inner wall of the bearing box, and the pH value of the medical wastewater can be neutralized to 2-4 by directly adding an acidic agent through the position of the water injection interception structure, so that the stability of chemical reaction with the reaction filler of the reaction column is promoted; then through the characteristic that iron-carbon micro-electrolysis pretreatment is formed by mixing cast iron scraps and activated carbon / coke according to the mass ratio of (1: 1)-(1: 2), the high-concentration and refractory pharmaceutical wastewater can be effectively pretreated, so that the use strength of the pretreatment device can be improved, and the characteristic effect of iron-carbon micro-electrolysis pretreatment is met.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical wastewater pretreatment technology, and more specifically to a pharmaceutical wastewater pretreatment device based on iron-carbon micro-electrolysis. Background Technology

[0002] Pharmaceutical wastewater is wastewater generated during pharmaceutical production and medical activities. It mainly contains pollutants such as antibiotics, chemical reagents, and pathogens. Therefore, after pharmaceutical wastewater is generated, it needs to be pre-treated in a centralized and dedicated wastewater pretreatment device. This device removes suspended solids, organic matter, and harmful impurities from the wastewater through physical and chemical methods, creating a safe and stable environment for subsequent treatment and improving the overall treatment efficiency. In summary, the inventors have found that existing pretreatment devices have the following main defects: when dealing with some high-concentration, difficult-to-degrade pharmaceutical wastewater, the current pretreatment devices are prone to pretreatment failure and inability to treat such wastewater using conventional pretreatment processes, which reduces the utilization intensity of the pretreatment devices. To address this, we propose an iron-carbon micro-electrolysis pretreatment device for pharmaceutical wastewater. This device utilizes iron-carbon micro-electrolysis (also known as internal electrolysis) to degrade organic pollutants through a galvanic cell reaction formed by iron and carbon. It is suitable for high-concentration, recalcitrant pharmaceutical wastewater, thereby significantly improving the stability of the pretreatment device in treating high-concentration, recalcitrant pharmaceutical wastewater. Summary of the Invention

[0003] The technical solution adopted by the present invention to achieve the technical objective is: a pretreatment device for pharmaceutical wastewater by iron-carbon micro-electrolysis, the structure of which includes: a positioning bracket, a reactor, a control panel, an output pump, and a water injection interception structure. The upper end of the positioning bracket is connected to the lower end of the reactor, and the reactor is equipped with a control panel and an output pump. The water injection interception structure is installed at the upper end of the reactor.

[0004] As a further improvement of the present invention, the reactor is provided with a support box, the inside of which is an open reaction tank and the inner wall is equipped with a pH monitoring module, and the bottom plate inside the support box is provided with a reaction column.

[0005] As a further improvement of the present invention, the reaction column is also provided with a connecting plate, which is located on the side of the positioning block and the upper end of the positioning block is connected to a loading column. The loading column is provided with a grid frame on its edge and an assembly block is mounted on its top to allow the reaction packing and assembly structure to be vertically embedded. The reaction packing communicates with the reaction tank through the grid frame.

[0006] As a further improvement of the present invention, impurities in the pharmaceutical wastewater are filtered through a water injection interception structure. Then, the pharmaceutical wastewater enters the reactor and comes into contact with the pH monitoring module and the reaction column of the bottom plate, so that the loading column of the reaction column allows the internal reaction packing to react chemically with the pharmaceutical wastewater through the grid frame.

[0007] As a further improvement of the present invention, the positioning bracket is set in a vertical orientation and there are three sets at the lower end of the reactor. The upper end of the reactor is perpendicular to and connected to the water injection interception structure. The output pump on the side of the reactor has a connecting groove to connect to the external guide pipe.

[0008] As a further improvement of the present invention, the reaction tank of the carrier box is set in a vertical orientation and the bottom plate area is equipped with a delivery pipe and a side output pump that are matched with each other. The pH value monitoring module of the carrier box is connected to the reaction tank and is spaced together with the reaction column.

[0009] As a further improvement of the present invention, the connecting plate is provided with two sets to determine the spacing of the three sets of positioning blocks so that the three loading columns maintain the spacing. The loading columns are connected to the reaction packing and the reaction tank through the grid frame. The reaction packing is made of cast iron filings or waste iron filings anode and activated carbon / coke cathode mixed at a mass ratio of 1:1 to 1:2. The contact time between the reaction packing 256 and the pharmaceutical wastewater is 30 to 120 minutes. The reaction filler material forms numerous micro-batteries under acidic conditions, generating electrochemical reactions: Anode (Fe): Fe → Fe 2+ + 2e - ; Cathode (C): 2H + + 2e - → H2↑ (under acidic conditions) or O2 + 2H2O + 4e - → 4OH - (Aerobic conditions).

[0010] As a further improvement of the present invention, the assembly structure is provided with a pull block, which is fixed to the upper end of the top cover and the lower end of the top cover is connected to a filler frame. The lower end of the filler frame is connected to a magnetic block and is interlocked with the bottom layer inside the loading column. The filler frame is also connected to the grid frame.

[0011] As a further improvement of the present invention, the pull block is perpendicular to the top cover, and the filling frame at the lower end of the top cover is set in a vertical orientation and is vertically interlocked with the loading column.

[0012] As a further improvement of the present invention, the top cover is also provided with a cover body, the cover body and the contact layer are integrated into one structure, and the edge of the contact layer is provided with protrusions and is spaced to fit the clamping frame. The clamping frame has a clamping groove inside and is fixedly connected to the top of the filling frame.

[0013] As a further improvement of the present invention, the cover is fixedly assembled by inserting the protrusions of the contact layer parallel to the top edge of the loading column. There are four protrusions in total, which are set in four directions. The shape of the clamping frame and the clamping groove matches the shape of the top of the filling frame.

[0014] As a further improvement of the present invention, the water injection interception structure is provided with a water injection end, the lower end of which is connected to a vertical pipe, and the left and right sides of the vertical pipe are equipped with reinforcing frames and the bottom is connected to a balance block so that the interception body can be embedded in the vertical pipe and is parallel to and connected to the bottom of the vertical pipe.

[0015] As a further improvement of the present invention, the water injection end is on the same vertical center line as the interceptor through the vertical pipe and the balance block. The reinforcement frames on the left and right sides of the vertical pipe are "L" shaped and set in a symmetrical orientation. The balance block is square in shape to determine the position of the interceptor.

[0016] As a further improvement of the present invention, the interceptor is also provided with a control block, one end of which is welded with a sliding frame, the edge of which is equipped with a slider and has a through groove inside for the interceptor net to be embedded.

[0017] As a further improvement of the present invention, the control block is perpendicular to the sliding frame, the slider at the edge of the sliding frame is a solid rectangular shape, the through groove is connected to the vertical pipe and the bottom layer is covered by the interception net.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention is based on a reactor. The pH value monitoring module on the inner wall of the carrier tank determines the acidity of the pharmaceutical wastewater. Acidic agents can be directly added to the water injection interception structure to neutralize the pH value of the medical wastewater to 2-4, promoting the stability of the chemical reaction with the reaction packing of the reaction column. Then, the reaction packing of the reaction column is formed by mixing cast iron filings and activated carbon / coke in a mass ratio (1:1 to 1:2) to form the characteristics of iron-carbon micro-electrolysis pretreatment. Therefore, it can effectively pretreat high-concentration, recalcitrant pharmaceutical wastewater, thereby improving the utilization intensity of the pretreatment device and meeting the characteristic effects of iron-carbon micro-electrolysis pretreatment.

[0019] 2. With the improved assembly structure, the present invention can directly pull the packing frame vertically out of the loading column position by using the pull block to vertically limit the top cover and the packing frame. This forces the reaction packing to quickly detach from the loading column and the grid frame, thereby improving the convenience of subsequent replacement of the reaction packing. Furthermore, the contact layer and protrusions under the top cover can improve the balance of the interpenetration connection with the top edge of the loading column, thereby improving the accuracy of the contact between the reaction packing and the grid frame and ensuring the stability of the contact between the pharmaceutical wastewater and the reaction packing.

[0020] 3. This invention improves upon the water injection interception structure by using two sets of symmetrical "L"-shaped reinforcement frames to effectively position the vertical pipe vertically at the center of the upper end of the reactor, preventing tilting and improving the stability of the pharmaceutical wastewater injection. Then, the interceptor at the balance block position uses an interception net to intercept the impurities carried by the pharmaceutical wastewater at the origin, preventing impurities from entering the reaction tank and clogging the grid frame and reaction packing. At the same time, the interception net can be linearly disengaged from the balance block position through the cooperation of the sliding frame and slider, making it easy to remove the intercepted impurities, thereby improving the convenience of maintenance between components. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a pretreatment device for pharmaceutical wastewater, which is based on iron-carbon micro-electrolysis.

[0022] Figure 2 This is a three-dimensional structural diagram of an improved reactor.

[0023] Figure 3 This is a schematic diagram of a three-dimensional structure of an improved reaction column.

[0024] Figure 4 This is a three-dimensional structural diagram of an improved assembly structure.

[0025] Figure 5 This is a top-view structural diagram of an improved lower layer of the top cover.

[0026] Figure 6 This is a three-dimensional structural diagram of an improved water injection interception structure.

[0027] Figure 7 This is a schematic diagram of a three-dimensional structure of an improved interceptor.

[0028] In the diagram: Positioning bracket-1, reactor-2, control panel-3, output pump-4, water injection interception structure-5; Carrier box-21, reaction tank-22, pH monitoring module-23, base plate-24, reaction column-25; Connecting plate-251, positioning block-252, loading column-253, grid frame-254, assembly block-255, reaction packing-256, assembly structure-257; Pull block-2571, top cover-2572, packing frame-2573, magnetic block-2574; Cover-5721, Contact layer-5722, Protrusion-5723, Clamping frame-5724, Clamping groove-5725; Water inlet end-51, vertical pipe-52, reinforcement frame-53, balance block-54, interceptor-55; Control block-551, sliding frame-552, slider-553, through slot-554, interception net-555. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: Example 1: Figures 1 to 5 As shown: This invention provides a pretreatment device for pharmaceutical wastewater based on iron-carbon micro-electrolysis. Its structure includes a positioning bracket 1, a reactor 2, a control panel 3, an output pump 4, and a water injection interception structure 5. The upper end of the positioning bracket 1 is connected to the lower end of the reactor 2, and the reactor 2 is equipped with the control panel 3 and the output pump 4. The water injection interception structure 5 is installed at the upper end of the reactor 2.

[0030] The reactor 2 is equipped with a support box 21, which has a reaction tank 22 inside and a pH monitoring module 23 mounted on its inner wall. The bottom plate 24 inside the support box 21 is equipped with a reaction column 25.

[0031] The reaction column 25 is also provided with a connecting plate 251. The connecting plate 251 is located on the side of the positioning block 252 and the upper end of the positioning block 252 is connected to a loading column 253. The loading column 253 has a grid frame 254 on its edge and an assembly block 255 on its top, allowing the reaction filler 256 and the assembly structure 257 to be vertically embedded. The reaction filler 256 is connected to the reaction tank 22 through the grid frame 254.

[0032] Impurities in the pharmaceutical wastewater are filtered through the water injection interception structure 5. The pharmaceutical wastewater then enters the reactor 2 and comes into contact with the pH monitoring module 23 and the reaction column 25 of the bottom plate 24. This allows the loading column 253 of the reaction column 25 to chemically react with the pharmaceutical wastewater through the grid frame 254.

[0033] The positioning bracket 1 is set in a vertical orientation and has three sets at the lower end of the reactor 2. The upper end of the reactor 2 is perpendicular to and connected to the water injection interception structure 5. The output pump 4 on the side of the reactor 2 has a connecting groove to connect to the external guide pipe.

[0034] The reaction tank 22 of the carrier box 21 is set in a vertical orientation and the bottom plate 24 area is equipped with a delivery pipe that matches the side output pump 4. The pH value monitoring module 23 of the carrier box 21 is connected to the reaction tank 22 and is spaced together with the reaction column 25.

[0035] The connecting plate 251 has two sets to determine the spacing of the three sets of positioning blocks 252 so that the three loading columns 253 maintain the spacing. The loading columns 253 are connected to the reaction packing 256 and the reaction tank 22 through the grid frame 254. The reaction packing 256 is made of cast iron filings or waste iron filings anode and activated carbon / coke cathode mixed at a mass ratio of 1:1 to 1:2. The contact time between the reaction packing 256 and the pharmaceutical wastewater is 30 to 120 minutes. Under acidic conditions, the reaction filler 256 forms numerous micro-batteries, generating electrochemical reactions: Anode (Fe): Fe → Fe 2+ + 2e - ; Cathode (C): 2H + + 2e - → H2↑ (under acidic conditions) or O2 + 2H2O + 4e - → 4OH - (Aerobic conditions).

[0036] The assembly structure 257 is provided with a pull block 2571, which is fixed to the upper end of the top cover 2572. The lower end of the top cover 2572 is connected to a filling frame 2573. The lower end of the filling frame 2573 is connected to a magnetic block 2574, which is interlocked with the bottom layer inside the loading column 253. The filling frame 2573 is connected to the grid frame 254.

[0037] The pull block 2571 is perpendicular to the top cover 2572, and the filling frame 2573 at the lower end of the top cover 2572 is set in a vertical position and is vertically inserted and assembled with the loading column 253.

[0038] The top cover 2572 is also provided with a cover body 5721. The cover body 5721 and the contact layer 5722 are an integrated structure. The edge of the contact layer 5722 is provided with a protrusion 5723 and is spaced to fit with the clamping frame 5724. The clamping frame 5724 has a clamping groove 5725 built in it and is fixedly connected to the top of the filling frame 2573.

[0039] The cover 5721 is fixedly assembled by inserting the protrusions 5723 of the contact layer 5722 parallelly into the top edge of the loading column 253. There are four protrusions 5723 in total, which are set in four directions. The shapes of the clamping frame 5724 and the clamping groove 5725 match the top shape of the filling frame 2573.

[0040] The specific functions and operation procedures of this embodiment are as follows: In this invention, the pharmaceutical wastewater pretreatment device can determine the position of reactor 2 through positioning bracket 1. After reactor 2 is connected to an external power source, the output pump 4 and reactor 2 can be electrically controlled through control panel 3. At the same time, pharmaceutical wastewater is introduced into the reactor 2 through water injection interception structure 5, so that the reaction tank 22 of the carrier box 21 of reactor 2 can receive pharmaceutical wastewater. Subsequently, the pH value of pharmaceutical wastewater is determined by pH value monitoring module 23 on the inner wall. If the data is too high, acidic agent can be added directly from the water injection interception structure 5 to neutralize the pH value of pharmaceutical wastewater to 2-4, so as to promote the stability of chemical reaction with reaction packing 256 of reaction column 25. As a result, the bottom plate 24 of carrier box 21 can determine the position of reaction column 25, ensuring that reaction column 25 can contact pharmaceutical wastewater. Then, the positioning block 252 of reaction column 25 can be reinforced by the position of connecting plate 251. Three loading columns 253 are used at appropriate intervals. The grid frame 254 at the edge of the loading column 253 allows the reaction packing 256 to vertically penetrate through the assembly structure 257 via the upper assembly block 255. This parallel connection between the assembly structure 257 and the assembly block 255 allows the reaction packing 256 to communicate with the grid frame 254. Therefore, the wastewater from the reaction tank 22 contacts the reaction packing 256 through the grid frame 254, achieving a stable chemical reaction. The reaction packing 256, by mixing its own cast iron filings (or scrap iron filings) with activated carbon / coke at a mass ratio (1:1 to 1:2), forms a galvanic cell reaction to degrade organic pollutants in pharmaceutical wastewater pretreatment. This pretreatment can treat high-concentration, recalcitrant pharmaceutical wastewater. The resulting galvanic cell reaction involves iron (anode) and carbon (cathode) forming numerous micro-cells under acidic conditions, producing an electrochemical reaction. Anode (Fe): Fe → Fe 2+ + 2e - ; Cathode (C): 2H + + 2e - → H2↑ (under acidic conditions) or O2 + 2H2O + 4e - → 4OH - (Aerobic conditions); Its mechanism of action: Redox: The generated Fe 2+ Active hydrogen ([H]) can reduce and degrade organic matter (such as nitro and azo compounds); Flocculation and adsorption: Fe 2+ Further oxidation to Fe 3+ This forms Fe(OH)3 colloids, which adsorb and flocculate pollutants. Disruption and chain breaking: Disrupts the complex structure of macromolecular organic matter (such as antibiotics and heterocyclic compounds) in pharmaceutical wastewater, thereby improving biodegradability; Therefore, the current pharmaceutical wastewater pretreatment device meets the characteristics of iron-carbon micro-electrolysis pretreatment and improves the intensity of pretreatment for high-concentration, recalcitrant pharmaceutical wastewater. After pretreatment, the output pump 4 on the side can be directly driven via the control panel 3. The output pump 4, combined with the pipes arranged on the base plate 24, outputs the pretreated pharmaceutical wastewater, facilitating subsequent treatment. Subsequently, the pull block 2571 of the assembly structure 257 can manually pull the top cover 2572 and the packing frame 2573 vertically, forcing the packing frame 2573 and the bottom magnetic block 2574 to vertically detach from the loading column 253. This facilitates disassembly, allowing for rapid disassembly of the reaction packing 256 inside the packing frame 2573. The continuous replacement effect improves the loading of new packing material. The bottom magnetic block 2574 enhances the connection between the packing material and the bottom layer of the loading column 253. The contact layer 5722 of the cover 5721 of the top cover 2572 can be interlocked with the top edge of the loading column 253 through the edge protrusion 5723. The position of the protrusion 5723 further enhances the connection stability with the loading column 253 and prevents the packing frame 2573 from tilting. At the same time, the cooperation of the clamping frame 5724 and the clamping groove 5725 effectively improves the assembly stability with the top of the packing frame 2573, ensuring the stability when manually pulled out or pushed in vertically by the pull block 2571. Therefore, the utilization intensity of the pharmaceutical wastewater pretreatment device is further improved.

[0041] Example 2: Figures 6 to 7 As shown: This invention provides a pretreatment device for pharmaceutical wastewater based on iron-carbon micro-electrolysis. Its structure includes a water injection end 51, a vertical pipe 52 connected to the lower end of the water injection end 51, and a reinforcing frame 53 mounted on the left and right sides of the vertical pipe 52 and a balance block 54 connected to the bottom so that the interceptor 55 can be embedded and is parallel to and connected to the bottom of the vertical pipe 52.

[0042] The water injection end 51 is located on the same vertical center line as the interceptor 55 through the vertical pipe 52 and the balance block 54. The reinforcement frame 53 on the left and right sides of the vertical pipe 52 is "L" shaped and set in a symmetrical position. The balance block 54 is square in shape to determine the position of the interceptor 55.

[0043] The interceptor 55 is further provided with a control block 551. A sliding frame 552 is welded to one end of the control block 551. A slider 553 is mounted on the edge of the sliding frame 552 and a through groove 554 is opened inside to allow the interceptor net 555 to be embedded.

[0044] The control block 551 is perpendicular to the sliding frame 552. The slider 553 on the edge of the sliding frame 552 is a solid rectangular shape. The through groove 554 is connected to the vertical pipe 52 and the bottom layer is covered by the interception net 555.

[0045] The specific functions and operation procedures of this embodiment are as follows: In this invention, the vertical pipe 52 mounted at the bottom of the water injection end 51 of the water injection interception structure 5 can be connected to the upper center of the reactor 2 via the lower balance block 54. Simultaneously, the vertical pipe 52 is supported and reinforced on both sides by two sets of "L"-shaped reinforcing frames 53, preventing swaying and instability when injecting pharmaceutical wastewater or adding acidic agents. Subsequently, while injecting pharmaceutical wastewater, the interceptor 55 of the balance block 54 intercepts the impurities it carries. This allows the control block 551 of the interceptor 55 to move the sliding frame 552 within the balance block 54, with the edge slider 553 ensuring smooth movement and preventing tilting. The blockage allows the channel 554 and the interceptor net 555 to detach from the balance block 54 and the lower end of the vertical pipe 52. Conversely, when the interceptor net 555 and the channel 554 are aligned with the lower end of the vertical pipe 52, the pharmaceutical wastewater guided by the vertical pipe 52 first enters the channel 554, and then the interceptor net 555 intercepts the impurities it carries over a wide area. This avoids the situation where a large number of impurities enter the reactor 2 together and clog the mesh frame 254 and the reaction packing 256, thereby improving the stability of the iron-carbon micro-electrolysis and improving the convenience of removing impurities from the interceptor net 555 by making it easy to pull out or push in.

[0046] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A pretreatment device for pharmaceutical wastewater using iron-carbon micro-electrolysis, comprising: The reactor comprises a positioning bracket (1), a reactor (2), a control panel (3), an output pump (4), and a water injection interception structure (5). The upper end of the positioning bracket (1) is connected to the lower end of the reactor (2), and the reactor (2) is equipped with the control panel (3) and the output pump (4). The water injection interception structure (5) is installed at the upper end of the reactor (2). The reactor is characterized by: The reactor (2) is provided with a support box (21), the support box (21) has an open reaction tank (22) inside and a pH monitoring module (23) mounted on the inner wall, and a reaction column (25) is provided on the bottom plate (24) inside the support box (21). The reaction column (25) is also provided with a connecting plate (251). The connecting plate (251) is located on the side of the positioning block (252), and the upper end of the positioning block (252) is connected to a loading column (253). The loading column (253) has a grid frame (254) on its edge and an assembly block (255) on its top to allow the reaction packing (256) and the assembly structure (257) to be vertically embedded. The reaction packing (256) is connected to the reaction tank (22) through the grid frame (254). Impurities in the pharmaceutical wastewater are filtered through the water injection interception structure (5). Then, the pharmaceutical wastewater enters the reactor (2) and comes into contact with the pH monitoring module (23) and the reaction column (25) of the bottom plate (24). This allows the loading column (253) of the reaction column (25) to have a chemical reaction with the internal reaction packing (256) of the pharmaceutical wastewater through the grid frame (254).

2. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 1, characterized in that: The positioning bracket (1) is set in a vertical orientation and there are three sets at the lower end of the reactor (2). The upper end of the reactor (2) is perpendicular to and connected to the water injection interception structure (5). The output pump (4) on the side of the reactor (2) has a connecting groove to connect with the external guide pipe.

3. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 1, characterized in that: The reaction tank (22) of the carrier box (21) is set in a vertical orientation and the bottom plate (24) area is equipped with a delivery pipe and a side output pump (4) that are matched with each other. The pH monitoring module (23) of the carrier box (21) is connected to the reaction tank (22) and is spaced together with the reaction column (25).

4. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 1, characterized in that: The connecting plate (251) is provided with two sets to determine the spacing of the three sets of positioning blocks (252) so that the three loading columns (253) maintain the spacing. The loading columns (253) are connected to the reaction packing (256) and the reaction tank (22) through the grid frame (254). The reaction packing (256) is made by mixing cast iron filings or scrap iron filings (anode) with activated carbon / coke (cathode) at a mass ratio of 1:1 to 1:

2. The contact time between the reaction packing (256) and the pharmaceutical wastewater is 30 to 120 minutes. The reaction filler (256) forms numerous micro-cells under acidic conditions, generating electrochemical reactions: Anode (Fe): Fe → Fe 2+ + 2e - ; Cathode (C): 2H + + 2e - → H2↑ (acidic conditions) or O2 + 2H2O + 4e - → 4OH - (Aerobic conditions).

5. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 1, characterized in that: The assembly structure (257) is provided with a pull block (2571), the pull block (2571) is fixed at the upper end of the top cover (2572) and the lower end of the top cover (2572) is connected to a filling frame (2573), the lower end of the filling frame (2573) is connected to a magnetic block (2574) which is interlocked with the bottom layer inside the loading column (253) and the filling frame (2573) is connected to the grid frame (254); The pull block (2571) is perpendicular to the top cover (2572), and the filling frame (2573) at the lower end of the top cover (2572) is set in a vertical orientation and is vertically interlocked with the loading column (253).

6. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 5, characterized in that: The top cover (2572) is also provided with a cover body (5721), the cover body (5721) and the contact layer (5722) are an integrated structure, and the edge of the contact layer (5722) is provided with a protrusion (5723) and is spaced to fit with the clamping frame (5724). The clamping frame (5724) has a built-in clamping groove (5725) and is fixedly connected to the top of the filling frame (2573); The cover (5721) is fixedly assembled by inserting the protrusions (5723) of the contact layer (5722) parallel to the top edge of the loading column (253). There are four protrusions (5723) in total, and they are set in four directions. The shapes of the clamping frame (5724) and the clamping groove (5725) match the top shape of the filling frame (2573).

7. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 1, characterized in that: The water injection interception structure (5) is provided with a water injection end (51). The lower end of the water injection end (51) is connected to a vertical pipe (52), and the left and right sides of the vertical pipe (52) are equipped with a reinforcing frame (53) and the bottom is connected to a balance block (54) so ​​that the interception body (55) can be embedded and is parallel and connected to the bottom of the vertical pipe (52). The water injection end (51) is on the same vertical center line as the interceptor (55) through the vertical pipe (52) and the balance block (54). The reinforcement frame (53) on the left and right sides of the vertical pipe (52) is "L" shaped and set in a symmetrical position. The balance block (54) is square in shape to determine the position of the interceptor (55).

8. The iron-carbon micro-electrolysis pharmaceutical wastewater pretreatment device according to claim 7, characterized in that: The interceptor (55) is also provided with a control block (551), one end of which is welded with a sliding frame (552), the edge of which is equipped with a slider (553) and has a through groove (554) inside to allow the interceptor net (555) to be embedded; The control block (551) is perpendicular to the sliding frame (552). The slider (553) on the edge of the sliding frame (552) is a solid rectangular shape. The through groove (554) is connected to the vertical pipe (52) and the bottom layer is covered by the interception net (555).

Images