A treatment and recycling system for industrial waste acid

Abstract

The invention relates to the technical field of recycling systems, and in particular to a system for treating and recycling industrial waste acid. The electrolysis part comprises a power supply, an anode rod, a plurality of support parts and a plurality of cathode parts. When the cathode part rotates clockwise in the support part, the switch part is opened, and a closed loop is formed when the cathode part and the anode rod are located in the industrial waste acid. The greater the angle of the cathode part rotating clockwise, the shorter the effective length of the variable resistor in the circuit, the greater the current in the closed loop, and the faster the ionization and deposition speed of heavy metal cations in the waste acid. When the cathode part rotates counterclockwise in the support part, the greater the angle of the cathode part rotating, the longer the effective length of the variable resistor in the circuit, the smaller the current in the closed loop, and the slower the ionization and deposition speed of heavy metal cations in the waste acid, until the cathode part rotates to the switch part again, the switch part is closed, the circuit is disconnected, and the ionization and deposition of heavy metal cations in the waste acid are stopped.

Description

Technical Field

[0001] The invention relates to the technical field of recycling systems, and in particular to a treatment and recycling system for industrial waste acid. Background Art

[0002] Industrial waste acid refers to wastewater containing acidic substances generated in various industrial production processes. These waste acids may come from multiple industries and processes, are usually highly acidic, and may contain harmful or valuable components. Industrial waste acids are widely present in multiple industries, including but not limited to metal processing, chemical industry, petroleum refining, papermaking and textiles, and food processing. Waste acids generated in metal processing such as electroplating, pickling, etching, etc.; reaction media or by-products used in chemical synthesis, pharmaceuticals, pesticide manufacturing and other industries in the chemical industry; acid treatment processes used to remove sulfides and other impurities in petroleum refining; acidic chemicals used in bleaching, dyeing and other processes in papermaking and textiles; and a certain amount of waste acid is also produced in certain food processing processes. Depending on the main acidic components contained, industrial waste acids can be divided into several types: acid waste liquid (H 2 SO 4 ), one of the most common waste acids, is widely used in metal surface treatment, fertilizer production, petrochemicals and other fields; hydrochloric acid waste liquid (HCl), is commonly used in steel pickling, electronic component manufacturing and other industries; nitric acid waste liquid (HNO 3 ), used for metal oxidation treatment, explosive production and certain chemical reactions; phosphoric acid waste liquid (H 3 PO 4 ), which is often seen in the production of phosphate fertilizers and the manufacture of water treatment agents; organic acid waste liquids, such as acetic acid and citric acid, are not as common as inorganic acids, but they also have important applications in specific industries. Industrial waste acids usually have the following characteristics: high acidity, extremely low pH value, and strong corrosive effects on the environment and infrastructure; complex composition, in addition to the main acidic components, it may also contain heavy metal ions (such as copper, nickel, zinc, chromium, etc.), organic pollutants, suspended solids and other impurities; temperature changes, some waste acids may be generated under high temperature conditions and require cooling treatment; potential toxicity, many waste acids contain toxic or harmful substances, and direct discharge will pose a threat to the ecosystem and human health.

[0003] If waste acid is discharged directly without proper treatment, it will cause serious pollution to water, soil and air. The treatment of industrial waste acid is a complex and important environmental engineering issue. Effective waste acid treatment not only helps environmental protection, but also achieves resource recycling and reduces enterprise operating costs.

[0004] Most electrochemical units in the industrial waste acid treatment and recycling system use independently controlled variable resistors to adjust the cathode current, thereby changing the removal rate of heavy metals in the industrial waste acid. Independently controlled variable resistors not only take up extra space, but are also cumbersome to operate. Summary of the invention

[0005] The main purpose of the present invention is to provide a system for treating and recycling industrial waste acid to solve the problem that the independently controlled variable resistor proposed in the related art not only occupies additional space but is also troublesome to operate.

[0006] In order to achieve the above-mentioned object, according to one aspect of the present invention, a system for processing and recycling industrial waste acid is provided, comprising: a storage part, wherein the storage part is used to store the industrial waste acid;

[0007] A purification section, which is connected to the material storage section and receives the industrial waste acid flowing out of the material storage section. The purification section is used to filter impurities in the industrial waste acid;

[0008] The electrolysis part is located at the rear end of the purification part, and includes a power supply, an anode rod, a plurality of support parts and a plurality of cathode parts. The anode rod is fixedly arranged below the power supply, and the cathode parts are rotatably arranged in the support parts. The support parts are fixedly connected to the power supply, and the cathode parts are connected to the power supply through the support parts.

[0009] A water pump, which is fixed to the side wall of the purification section and is used to pump the industrial waste acid in the purification section into the concentration section;

[0010] The concentrating section is connected to the water pump, and includes a concentrating barrel, a liquid outlet and a steam outlet. The concentrating section is used to concentrate the industrial waste acid purified by the purification section. The steam outlet is fixedly arranged on the top of the concentrating barrel to discharge the steam in the concentrating barrel, and the liquid outlet is fixedly arranged on the side of the concentrating barrel to discharge the concentrated waste acid.

[0011] Furthermore, the material storage section includes a material storage box and a discharge pipe, the material storage box is used to hold industrial waste acid, one end of the discharge pipe is fixed at the front end of the material storage box, and the other end extends into the purification section to introduce the industrial waste acid in the material storage box into the purification section.

[0012] Furthermore, the purification part includes a purification box group, several filter groups and a gate group, the purification box group includes a purification box, a slag discharge port and a cross plate, the filter group includes a filter screen and two card blocks, and the gate group includes a gate, two connecting blocks and a handle.

[0013] Furthermore, a plurality of guide grooves are provided on the side walls of the purification box, the slag discharge port is arranged through the bottom of the front end of the purification box, the two blocks are fixedly arranged on both sides of the filter screen, the blocks are slidably connected to the guide grooves, the two connecting blocks are fixedly arranged on both sides of the gate, the connecting blocks are slidably connected to the guide grooves, the handle is fixedly arranged on the top of the gate, the horizontal plate is fixedly arranged above the purification box and is located on the right side of the gate, and the power supply is fixedly arranged on the lower surface of the horizontal plate.

[0014] Furthermore, the support portion also includes a support rod, a ring group and a notch portion, the ring group includes a support ring, a first clamping ring and a second clamping ring, one end of the support rod is fixedly connected to the power supply, and the other end is fixedly connected to the support ring, and the notch portion is arranged on the bottom surface of the support ring.

[0015] Furthermore, the first clamping ring is fixedly arranged on the upper inner side of the support ring, the second clamping ring is fixedly arranged on the lower inner side of the support ring, the corresponding parts of the support ring, the variable resistor, the first clamping ring and the second clamping ring are all provided with through-notches, the inner side of the support ring is provided with a T-shaped groove, the variable resistor is fixedly arranged on the outer side of the support ring, and a resistor groove is provided at the bottom of the variable resistor.

[0016] Furthermore, the slot portion includes a left slot group, a right slot group and a main slot group, the left slot group includes a left vertical slot and a left oblique slot, the right slot group includes a right vertical slot and a right oblique slot, and the main slot group includes an arc slot and a bottom slot.

[0017] Furthermore, the bottom groove is located in the middle of the bottom of the arc-shaped groove, the left vertical groove is located on the left side of the arc-shaped groove, the left oblique groove is located at the top of the left vertical groove, the right vertical groove is located on the right side of the arc-shaped groove, and the right oblique groove is located at the top of the right vertical groove.

[0018] Further, the switch portion includes a switch body group and an insert block group, the switch body group includes a switch body, an arc block and a connecting shaft, the insert block group includes a left vertical block, a left oblique block, a right vertical block and a right oblique block, the arc block is fixedly arranged at the bottom of the switch body, the connecting shaft is fixedly connected to the arc block and is rotatably connected to the support ring, the left vertical block is fixedly arranged at the lower left side of the switch body, the left oblique block is fixedly arranged at the lower end of the left vertical block, the right vertical block is fixedly arranged at the lower right side of the switch body, and the right oblique block is fixedly arranged at the lower right side of the right vertical block.

[0019] Furthermore, the cathode part includes a cathode group and a conductor group, the cathode group includes a knob, a cathode rod and a T-shaped slider, the conductor group includes a conductor rod and a conductor protrusion, the cathode rod is fixed at the bottom of the knob, the T-shaped slider is fixed above the side of the cathode rod, the conductor rod is fixed above the side of the cathode rod, and the conductor protrusion is fixed above the outer end of the conductor rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the cathode part rotates clockwise in the support part, the switch part is opened, and a closed loop is formed when the cathode part and the anode rod are located in the industrial waste acid. The greater the angle of the cathode part rotating clockwise, the shorter the effective length of the variable resistor in the circuit, the greater the current in the closed loop, and the faster the ionization and deposition rate of heavy metal cations in the waste acid. When the cathode part rotates counterclockwise in the support part, the greater the angle of the cathode part rotating, the longer the effective length of the variable resistor in the circuit, the smaller the current in the closed loop, and the slower the ionization and deposition rate of heavy metal cations in the waste acid, until the cathode part rotates to the switch part again, the switch part is closed, the circuit is disconnected, and the ionization and deposition of heavy metal cations in the waste acid are stopped. The multiple cathode parts are independent of each other and do not affect each other. The waste acid can be ionized and purified separately or at the same time. The variable resistor is installed on the outside of the cathode rod and does not occupy additional space. The current can be directly adjusted when the cathode rod is installed, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the electrolysis unit of the present invention;

[0024] Figure 3 This is a schematic diagram of the front structure of the support part of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the support part of the present invention;

[0026] Figure 5 This is a schematic diagram of the back structure of the support portion of the present invention;

[0027] Figure 6 It is a schematic diagram of the notch structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the switch part of the present invention;

[0029] Figure 8 Schematic diagram of the cathode structure of the present invention.

[0030] Illustration Description:

[0031] 1. Material storage unit; 11. Material storage box; 12. Material discharge pipe;

[0032] 2. Purification unit; 21. Purification box; 22. Slag discharge port; 23. Filter screen; 24. Block; 25. Gate; 26. Connecting block; 27. Handle; 28. Horizontal plate;

[0033] 3. Electrolysis unit; 31. Power supply; 32. Anode rod; 33. Support unit; 34. Cathode unit; 331. Support rod; 332. Support ring; 333. Variable resistor; 334. First clamp ring; 335. Second clamp ring; 336. Resistor groove; 337. T-shaped groove; 338. Notch unit; 339. Switch unit; 3381. Arc notch; 3382. Bottom groove; 3383. left vertical slot; 3384, left oblique slot; 3385, right vertical slot; 3386, right oblique slot; 3391, switch body; 3392, arc block; 3393, connecting shaft; 3394, left vertical block; 3395, left oblique block; 3396, right vertical block; 3397, right oblique block; 341, knob; 342, cathode rod; 343, T-shaped slider; 344, conductor rod; 345, conductor protrusion;

[0034] 4. Water pump;

[0035] 5. Concentration section; 51. Concentration barrel; 52. Liquid outlet; 53. Steam outlet. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0037] See also Figures 1 to 8 , This embodiment provides a system for processing and recycling industrial waste acid, including: a storage part 1, the storage part 1 is used to store industrial waste acid;

[0038] The purification part 2 is connected to the material storage part 1, receives the industrial waste acid flowing out of the material storage part 1, and is used to filter impurities in the industrial waste acid;

[0039] The electrolysis part 3 is located at the rear end of the purification part 2. The electrolysis part 3 includes a power supply 31, an anode rod 32, a plurality of support parts 33 and a plurality of cathode parts 34. The anode rod 32 is fixedly arranged below the power supply 31. The cathode parts 34 are all rotatably arranged in the support parts 33. The support parts 33 are all fixedly connected to the power supply 31. The cathode parts 34 are all connected to the power supply 31 through the support parts 33. The support parts 33 include a variable resistor 333 and a switch part 339. When the cathode part 34 rotates in the support part 33 in a clockwise direction, the switch part 339 is Open, the cathode part 34 and the anode rod 32 form a closed loop when they are located in the industrial waste acid. The greater the angle of the cathode part 34 rotating clockwise, the shorter the effective length of the variable resistor 333 in the circuit, and the greater the current in the closed loop. When the cathode part 34 rotates counterclockwise in the support part 33, the greater the angle of the cathode part 34 rotating, the longer the effective length of the variable resistor 333 in the circuit, and the smaller the current in the closed loop, until the cathode part 34 rotates to the switch part 339 again, the switch part 339 is closed, and the circuit is disconnected.

[0040] A water pump 4, which is fixed to the side wall of the purification section 2 and is used to pump the industrial waste acid in the purification section 2 into the concentration section 5;

[0041] The concentrating section 5 is connected to the water pump 4. The concentrating section 5 includes a concentrating barrel 51, a liquid outlet 52 and a steam outlet 53. The concentrating section 5 is used to concentrate the industrial waste acid purified by the purification section 2. The steam outlet 53 is fixedly arranged on the top of the concentrating barrel 51 to discharge the steam in the concentrating barrel 51. The liquid outlet 52 is fixedly arranged on the side of the concentrating barrel 51 to discharge the concentrated waste acid.

[0042] The concentration tank 51 is provided with an MVR system, which relies on the MVR technology to concentrate the purified waste acid to reach the concentration of industrial acid.

[0043] The material storage section 1 includes a material storage box 11 and a discharge pipe 12. The material storage box 11 is used to hold industrial waste acid. One end of the discharge pipe 12 is fixedly arranged at the front end of the material storage box 11, and the other end extends into the purification section 2 to introduce the industrial waste acid in the material storage box 11 into the purification section 2.

[0044] The purification section 2 includes a purification box group, several filter groups and a gate group. The purification box group includes a purification box 21, a slag discharge port 22 and a cross plate 28. The filter group includes a filter screen 23 and two blocks 24. The gate group includes a gate 25, two connecting blocks 26 and a handle 27.

[0045] A plurality of guide grooves are provided on the side walls of the purification box 21, and a slag discharge port 22 is provided through the bottom of the front end of the purification box 21. Two clamping blocks 24 are fixedly provided on both sides of the filter screen 23, and the clamping blocks 24 are slidably connected to the guide grooves. Two connecting blocks 26 are fixedly provided on both sides of the gate 25, and the connecting blocks 26 are slidably connected to the guide grooves. A handle 27 is fixedly provided on the top of the gate 25. A horizontal plate 28 is fixedly provided above the purification box 21 and is located on the right side of the gate 25. A power supply 31 is fixedly provided on the lower surface of the horizontal plate 28.

[0046] The support portion 33 also includes a support rod 331, a ring group and a notch portion 338. The ring group includes a support ring 332, a first clamping ring 334 and a second clamping ring 335. One end of the support rod 331 is fixedly connected to the power supply 31, and the other end is fixedly connected to the support ring 332. The notch portion 338 is arranged on the bottom surface of the support ring 332.

[0047] The first clamp ring 334 is fixedly arranged on the upper inner side of the support ring 332, and the second clamp ring 335 is fixedly arranged on the lower inner side of the support ring 332. The first clamp ring 334 and the second clamp ring 335 are both made of rubber. After the cathode rod 342 is inserted into them, the first clamp ring 334 and the second clamp ring 335 are deformed to clamp the cathode rod 342 therein to prevent the cathode rod 342 from shaking, which makes it impossible to maintain a stable current and affect the deposition quality of heavy metal cations. The support ring 332, the variable resistor 333, the first clamp ring 334 and the second clamp ring 335 correspond to The supporting ring 332 is provided with a T-shaped groove 337, and the T-shaped slider 343 slides in the T-shaped groove 337, so that the cathode rod 342 rotates in the same plane, ensuring that the conductor protrusion 345 is always in contact with the variable resistor 333. The variable resistor 333 is fixedly arranged on the outside of the supporting ring 332, and a resistor groove 336 is provided at the bottom of the variable resistor 333. The conductor protrusion 345 is located in the resistor groove 336, thereby increasing the connection area between the conductor rod 344 and the variable resistor 333 and ensuring stable contact between the two.

[0048] The slot portion 338 includes a left slot group, a right slot group and a main slot group. The left slot group includes a left vertical slot 3383 and a left oblique slot 3384 , the right slot group includes a right vertical slot 3385 and a right oblique slot 3386 , and the main slot group includes an arc slot 3381 and a bottom slot 3382 .

[0049] The bottom groove 3382 is located in the middle of the bottom of the arc-shaped groove 3381 , the left vertical groove 3383 is located on the left side of the arc-shaped groove 3381 , the left oblique groove 3384 is located at the top of the left vertical groove 3383 , the right vertical groove 3385 is located on the right side of the arc-shaped groove 3381 , and the right oblique groove 3386 is located at the top of the right vertical groove 3385 .

[0050] The switch portion 339 includes a switch body group and an insert block group. The switch body group includes a switch body 3391, an arc block 3392 and a connecting shaft 3393. The insert block group includes a left vertical block 3394, a left oblique block 3395, a right vertical block 3396 and a right oblique block 3397. The arc block 3392 is fixedly arranged at the bottom of the switch body 3391. The connecting shaft 3393 is fixedly connected to the arc block 3392 and is rotatably connected to the support ring 332. The left vertical block 3394 is fixedly arranged at the lower left side of the switch body 3391. The left oblique block 3395 is fixedly arranged at the lower end of the left vertical block 3394. The right vertical block 3396 is fixedly arranged at the lower right side of the switch body 3391. The right oblique block 3397 is fixedly arranged at the lower right side of the switch body 3396.

[0051] The left bevel block 3395 is slightly smaller than the left bevel groove 3384, and the right bevel block 3397 is slightly smaller than the right bevel groove 3386. When the left bevel block 3395 is inserted into the left bevel groove 3384 or the right bevel block 3397 is inserted into the right bevel groove 3386, both the left bevel block 3395 and the right bevel block 3397 will be deformed due to the pressure and will be stuck in the left bevel groove 3384 or the right bevel groove 3386, thereby maintaining the open or closed state of the switch part 339.

[0052] The cathode part 34 includes a cathode group and a conductor group. The cathode group includes a knob 341, a cathode rod 342 and a T-shaped slider 343. The conductor group includes a conductor rod 344 and a conductor protrusion 345. The cathode rod 342 is fixed at the bottom of the knob 341, the T-shaped slider 343 is fixed above the side of the cathode rod 342, the conductor rod 344 is fixed above the side of the cathode rod 342, and the conductor protrusion 345 is fixed above the outer end of the conductor rod 344.

[0053] The cathode rod 342 is connected to the power supply 31 through the variable resistor 333 and then through the wire, and the anode rod 32 is connected to the power supply 31 through the wire. When the cathode rod 342 and the anode rod 32 are inserted into the waste acid and the switch part 339 is closed, current flows through the cathode rod 342 and the anode rod 32, and the heavy metal cations in the waste acid are electrolytically deposited, and the heavy metal cations are reduced to heavy metal atoms attached to the cathode rod 342, thereby removing them from the waste acid. The cathode rod 342 is rotated to change the effective length of the variable resistor 333 connected to the circuit, and the current size also changes accordingly. By adjusting the current size, the deposition speed of the heavy metal cations can be controlled.

[0054] Put the industrial waste acid liquid in the storage box 11, open the valve of the discharge pipe 12, and the waste acid flows from the storage box 11 through the discharge pipe 12 into the front end of the purification box 21, and flows backward through the filter 23. The waste acid is filtered out of organic matter, suspended matter and other impurities by the filter 23, reducing the turbidity and color of the waste acid. Hang the handle 27 with a lifting device and lift it upward, open the gate 25, and the waste acid filtered at the front end of the purification box 21 flows through the gate 25 into the rear end of the purification box 21. After the liquid level at the rear end of the purification box 21 submerges the anode rod 32, close the gate 25, hold the knob 341, align the conductor rod 344 with the notch of the support ring 332, insert the cathode rod 342 into the support ring 332, and when the T-shaped slider 343 is aligned with the T-shaped groove 337 3386, the right oblique block 3397 is pressed into the right oblique groove 3386, and the switch part 339 is opened, and the circuit of the electrolysis part 3 is connected. Since the right oblique groove 3386 is slightly smaller than the right oblique block 3397, the right oblique block 3397 is squeezed into the right oblique groove 3386 and deformed, and is stuck in the right oblique groove 3386, so as to maintain the open state of the switch part 339. As the conductor rod 344 rotates, the effective length of the variable resistor 333 in the circuit gradually decreases, and the current gradually increases. Heavy metal cations such as lead ions, cadmium ions, and copper ions in the waste acid are deposited at the cathode rod 342 and separated from the waste acid. The greater the current, the faster the deposition rate of the heavy metal cations. According to actual needs, the number of cathode rods 342 to be inserted is determined, and multiple cathode rods 342 work at the same time to further increase the deposition rate of heavy metal cations in the waste acid. When one of the cathode rods 342 needs to be replaced, the other cathode rods 342 can continue to work without affecting the deposition of heavy metal cations. Turn the knob 341 counterclockwise, the effective length of the variable resistor 333 in the circuit gradually increases, and the current gradually decreases. , until the conductor rod 344 pushes the switch body 3391 to rotate counterclockwise around the connecting shaft 3393, the right vertical block 3396 is pulled out from the right vertical slot 3385, the right oblique block 3397 is pulled out from the right oblique slot 3386, and at the same time the left vertical block 3394 is pressed into the left vertical slot 3383, the left oblique block 3395 is pressed into the left oblique slot 3384, the switch part 339 is closed, the left oblique block 3395 is stuck in the left oblique slot 3384, the switch part 339 is maintained in the closed state, and the circuit of the electrolysis part 3 is disconnected. When the conductor rod 344 rotates to the gap of the support ring 332, the knob 341 is lifted upwards, the old cathode part 34 is taken out, and the new cathode part 34 is inserted into the support part 33 to continue the electrolytic deposition of heavy metal cations in the waste acid;Start the water pump 4 to pump the waste acid after deposition into the concentration barrel 51. After the waste acid in the concentration barrel 51 is evaporated and concentrated by the MVR technology, the water vapor is discharged from the steam port 53, and the concentrated acid liquid is discharged from the liquid outlet 52 for standby use. After all the waste acid at the rear end of the purification box 21 is pumped into the concentration barrel 51, the gate 25 is opened again to carry out the next round of electrolytic deposition. When a large amount of impurities are attached to the filter screen 23 due to long-term filtration, its permeability is reduced, which affects the filtration speed and filtration effect. At this time, close the valve of the discharge pipe 12, stop injecting waste acid into the purification box 21, and after the waste acid in the purification box 21 is filtered and deposited, all of it is pumped into the concentration barrel 51, and the filter screen 23 is pulled out from the guide groove of the side wall of the purification box 21, and after cleaning, it is put back into the guide groove of the purification box 21, and the filtration can continue. The precipitation at the bottom of the purification box 21 is discharged from the slag outlet 22, and the multi-layer filter screen 23 is filtered in sequence, which is conducive to improving the purity of the waste acid. ;

[0055] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A system for treating and recycling industrial waste acid, comprising a storage unit (1), wherein the storage unit (1) is used to store industrial waste acid; A purification section (2), the purification section (2) being connected to the material storage section (1) and receiving the industrial waste acid flowing out of the material storage section (1), the purification section (2) being used to filter impurities in the industrial waste acid; It is characterized in that Also includes: an electrolysis section (3), the electrolysis section (3) being located at the rear end of the purification section (2), the electrolysis section (3) comprising a power source (31), an anode rod (32), a plurality of support sections (33) and a plurality of cathode sections (34), the anode rod (32) being fixedly disposed below the power source (31), the cathode sections (34) being rotatably disposed in the support sections (33), the support sections (33) being fixedly connected to the power source (31), and the cathode sections (34) being connected to the power source (31) via the support sections (33); A water pump (4), the water pump (4) being fixedly mounted on a side wall of the purification section (2) and being used to pump the industrial waste acid in the purification section (2) into the concentration section (5); A concentrating section (5), the concentrating section (5) being in communication with the water pump (4), the concentrating section (5) comprising a concentrating barrel (51), a liquid outlet (52) and a steam outlet (53), the concentrating section (5) being used to concentrate the industrial waste acid purified by the purification section (2); The support portion (33) further comprises a support rod (331), a ring group and a notch portion (338); the ring group comprises a support ring (332), a first clamping ring (334) and a second clamping ring (335); one end of the support rod (331) is fixedly connected to the power source (31), and the other end is fixedly connected to the support ring (332); the notch portion (338) is provided on the bottom surface of the support ring (332); The first clamping ring (334) is fixedly arranged on the upper inner side of the support ring (332), the second clamping ring (335) is fixedly arranged on the lower inner side of the support ring (332), corresponding parts of the support ring (332), the variable resistor (333), the first clamping ring (334) and the second clamping ring (335) are all provided with through-going notches, the inner side of the support ring (332) is provided with a T-shaped groove (337), the variable resistor (333) is fixedly arranged on the outer side of the support ring (332), and the bottom of the variable resistor (333) is provided with a resistor groove (336); The notch portion (338) comprises a left notch group, a right notch group and a main notch group, the left notch group comprises a left vertical notch (3383) and a left oblique notch (3384), the right notch group comprises a right vertical notch (3385) and a right oblique notch (3386), and the main notch group comprises an arc-shaped notch (3381) and a bottom notch (3382).

2. The industrial waste acid treatment and recycling system according to claim 1, characterized in that: The material storage section (1) comprises a material storage box (11) and a discharge pipe (12); the material storage box (11) is used to contain industrial waste acid; one end of the discharge pipe (12) is fixedly arranged at the front end of the material storage box (11), and the other end extends into the purification section (2) to introduce the industrial waste acid in the material storage box (11) into the purification section (2).

3. The industrial waste acid treatment and recycling system according to claim 1, characterized in that: The purification section (2) comprises a purification box group, a plurality of filter screen groups and a gate group. The purification box group comprises a purification box (21), a slag discharge port (22) and a transverse plate (28). The filter screen group comprises a filter screen (23) and two clamping blocks (24). The gate group comprises a gate (25), two connecting blocks (26) and a handle (27).

4. The industrial waste acid treatment and recycling system according to claim 3, characterized in that: The side wall of the purification box (21) is provided with a plurality of guide grooves, the slag discharge port (22) is provided through the bottom of the front end of the purification box (21), the two clamping blocks (24) are fixedly provided on both sides of the filter screen (23), the clamping blocks (24) are slidably connected to the guide grooves, the two connecting blocks (26) are fixedly provided on both sides of the gate (25), the connecting blocks (26) are slidably connected to the guide grooves, the handle (27) is fixedly provided on the top of the gate (25), the horizontal plate (28) is fixedly provided above the purification box (21) and is located on the right side of the gate (25), and the power supply (31) is fixedly provided on the lower surface of the horizontal plate (28).

5. The industrial waste acid treatment and recycling system according to claim 1, characterized in that: The bottom groove (3382) is located in the middle of the bottom of the arc-shaped groove (3381), the left vertical groove (3383) is located on the left side of the arc-shaped groove (3381), the left oblique groove (3384) is located at the top of the left vertical groove (3383), the right vertical groove (3385) is located on the right side of the arc-shaped groove (3381), and the right oblique groove (3386) is located at the top of the right vertical groove (3385).

6. The industrial waste acid treatment and recycling system according to claim 5, characterized in that: The support portion (33) comprises a variable resistor (333) and a switch portion (339); the switch portion (339) comprises a switch body group and an insert block group; the switch body group comprises a switch body (3391), an arc block (3392) and a connecting shaft (3393); the insert block group comprises a left vertical block (3394), a left oblique block (3395), a right vertical block (3396) and a right oblique block (3397); the arc block (3392) is fixedly arranged on the switch body (33 91), the connecting shaft (3393) is fixedly connected to the arc block (3392) and is rotatably connected to the support ring (332), the left vertical block (3394) is fixedly arranged at the lower left side of the switch body (3391), the left oblique block (3395) is fixedly arranged at the lower end of the left vertical block (3394), the right vertical block (3396) is fixedly arranged at the lower right side of the switch body (3391), and the right oblique block (3397) is fixedly arranged at the lower part of the right vertical block (3396).

7. The industrial waste acid treatment and recycling system according to claim 1, characterized in that: The cathode part (34) comprises a cathode group and a conductor group, the cathode group comprises a knob (341), a cathode rod (342) and a T-shaped slider (343), the conductor group comprises a conductor rod (344) and a conductor protrusion (345), the cathode rod (342) is fixedly arranged at the bottom of the knob (341), the T-shaped slider (343) is fixedly arranged above the side of the cathode rod (342), the conductor rod (344) is fixedly arranged above the side of the cathode rod (342), and the conductor protrusion (345) is fixedly arranged above the outer end of the conductor rod (344).

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