A method and equipment for treating thallium-containing wastewater in non-ferrous metal smelting process

Abstract

The present application relates to a method and apparatus for treating thallium-containing wastewater in a non-ferrous metal smelting process, and relates to the field of non-ferrous metal smelting wastewater treatment. The method comprises the following steps: (1) mixing desulfurization wastewater and thallium-containing wastewater in a mass ratio of 1:(1-0.5) to obtain a mixed waste liquid, and then acidifying and oxidizing the mixed waste liquid in sequence to obtain a pre-treated waste liquid; (2) adding lime milk to the pre-treated waste liquid, stirring the mixture for 10-30 minutes, and then allowing the mixture to settle for 1-0.5 hours, and then discharging the supernatant to obtain a purified liquid. The amount of lime milk added accounts for 0.2-0.4% of the mass ratio of the pre-treated liquid. The present application can effectively improve the treatment efficiency and treatment effect of thallium-containing wastewater, and can comprehensively treat thallium-containing wastewater and desulfurization wastewater, thereby achieving the purpose of treating waste with waste.

Description

Technical Field

[0001] The present application relates to the field of non-ferrous metal smelting wastewater treatment, and in particular to a method and equipment for treating thallium-containing wastewater in a non-ferrous metal smelting process. Background Art

[0002] Since thallium has both lithophile and sulfur-phile properties in crystal chemistry and geochemistry, it mainly enters into minerals such as galena, chalcopyrite and sulfates in the form of trace elements during hydrothermal mineralization. However, due to its low content, industrial utilization is difficult. Therefore, during the development of mining resources, thallium and other toxic elements are discharged into tailings, in which the thallium content is higher than the average value in the ore.

[0003] At the same time, a large amount of energy is required in the process of non-ferrous metal smelting, which is generally provided by coal combustion. The flue gas generated by coal combustion needs to be desulfurized and dust-removed before it can be discharged. Limestone-gypsum wet desulfurization technology is the mainstream technology for flue gas desulfurization in my country. Although the pollutants in the flue gas after limestone-gypsum wet desulfurization treatment meet the requirements, a large amount of desulfurization wastewater is still generated during the wet desulfurization process. The desulfurization wastewater is weakly acidic and contains a large amount of heavy metal elements and suspended solids.

[0004] In the related art, for example, the application document with application number 202210415525.6 discloses a device and method for treating thallium-containing wastewater in non-ferrous metal smelting, which includes a first-stage liquid purification device, a second-stage liquid purification device, and a third-stage liquid purification device. The liquid in the first-stage liquid purification device is heated to 40-50°C, sodium sulfide and flocculant are added, and the mixture is stirred for sufficient reaction before entering the second-stage purification device. After further heating to 50-60°C, a special-effect agent and a reducing agent are added, and the mixture is stirred for sufficient reaction before entering the second-stage purification device. The second-stage purified liquid is placed in a clarification tank for natural sedimentation and then enters the third-stage liquid purification device for adsorption purification. The purified liquid is tested and the qualified purified liquid is discharged from the purified liquid outlet. The above-mentioned scheme effectively solves the problem that the thallium element in the wastewater discharged from lead and zinc smelting with high thallium content cannot stably meet the standard by combining primary filtration, mixed clarification, and multiple adsorption filtration.

[0005] Regarding the aforementioned related technologies, in actual operation, after the secondary purification liquid enters the clarifier, the precipitation efficiency of the thallium-containing precipitate is low, so it takes a long time for static sedimentation, resulting in low treatment efficiency of the thallium-containing wastewater. In addition, a considerable portion of the thallium-containing precipitate will be suspended in the clarified liquid, resulting in poor treatment effect on the thallium-containing wastewater. Summary of the Invention

[0006] In order to improve the treatment efficiency and treatment effect of thallium-containing wastewater, the present application provides a method and equipment for treating thallium-containing wastewater in a non-ferrous metal smelting process.

[0007] The present application provides a treatment device for thallium-containing wastewater in a non-ferrous metal smelting process, which adopts the following technical solution:

[0008] A treatment device for thallium-containing wastewater in a non-ferrous metal smelting process, characterized in that: the treatment method for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 1 is adopted, the treatment device comprises a reaction tower, a settling hopper, a water inlet pipe and a water outlet pipe, the settling hopper is coaxially arranged at the bottom of the reaction tower, the settling hopper is fixedly connected to the bottom of the reaction tower, the diameter of the settling hopper gradually decreases in the direction away from the reaction tower, a through water pipe is provided at the connection between the settling hopper and the reaction tower, a solenoid valve is provided in the water pipe, and two feeding pipes are respectively connected to the reaction tower and the settling hopper;

[0009] There are two water inlet pipes, both of which are fixedly connected to the reaction tower. The water outlet pipe is coaxially arranged in the reaction tower. One end of the water outlet pipe extends to the top of the reaction tower and the other end extends into the sedimentation bucket. A filter element is fixedly connected to the end of the water outlet pipe extending into the sedimentation bucket.

[0010] By adopting the above technical solution, during operation, thallium-containing wastewater and desulfurization wastewater are respectively introduced into the reaction tower through two water inlet pipes, and then acidifier and oxidant are sequentially added into the reaction tower through the feeding pipe. After the reaction is complete, pre-treated waste liquid is obtained, and then the solenoid valve is opened to introduce the pre-treated waste liquid into the sedimentation bucket, and then lime milk is added into the sedimentation bucket through the feeding pipe to form Ti(OH)3 precipitate and Fe(OH)3 flocculation precipitation, and the Fe(OH)3 flocculation precipitation adsorbs Ti(OH)3 precipitate and Ti(OH)3 precipitate. 3 + Finally, a large precipitate aggregate is formed, which can then quickly settle at the bottom of the sedimentation bucket, thereby achieving separation of the precipitate and the liquid. Then, the supernatant is discharged through the outlet pipe to obtain clean purified liquid. The above-mentioned treatment equipment can effectively improve the treatment efficiency of mixed waste liquid and has a good purification effect on the mixed waste liquid.

[0011] Optionally, the two water inlet pipes are evenly spaced along the circumference of the reaction tower, the axis of the water inlet pipe is consistent with the tangent direction of the cross-section circle of the reaction tower, and the water inlet directions of the two water inlet pipes are opposite.

[0012] By adopting the above technical solution, the axis of the water inlet pipe is set to be consistent with the tangent direction of the cross-section circle of the reaction tower. After passing through the water inlet pipe and the inner wall of the reaction tower, the thallium-containing wastewater and the desulfurization wastewater can form a rotating vortex, thereby having a stirring effect, which is beneficial to the acidifier and oxidant to fully react with the mixed waste liquid, and thus is beneficial to ensuring subsequent good treatment effects.

[0013] Optionally, a spirally arranged guide vane is fixedly connected to the inner wall of the reaction tower, and the width of the guide vane gradually decreases from top to bottom.

[0014] By adopting the above technical solution, the convection rate of the rotating vortex is further enhanced by setting the guide plate, which is conducive to fully stirring the mixed waste liquid, and further conducive to fully reacting the acidifier and oxidant with the mixed waste liquid.

[0015] Optionally, the processing equipment also includes a slag removal component, which includes a slag discharge pipe, a slag retaining plate and a driving member. The slag discharge pipe is semicircular, and one end of the slag discharge pipe is fixedly connected to the bottom of the sedimentation bucket. The slag retaining plate is conical, and the diameter of the slag retaining plate gradually decreases toward the sedimentation bucket. The slag retaining plate is slidably connected to the slag discharge pipe, and a material drop gap for the sediment to pass through is formed between the slag retaining plate and the wall of the slag discharge pipe. The driving member is used to drive the slag retaining plate to slide in the slag discharge pipe.

[0016] By adopting the above technical solution, the precipitate formed by the mixed waste liquid in the sedimentation bucket flows into the slag discharge pipe through the slag retaining plate. The provision of a semicircular slag discharge pipe is conducive to the accumulation of precipitates at the bottom of the slag discharge pipe. The provision of a conical slag retaining plate can prevent the precipitate from flowing back into the sedimentation bucket, thereby ensuring a better treatment effect. After a period of treatment, the slag retaining plate is driven by the driving member to slide in a direction away from the sedimentation bucket, and the slag retaining plate can push the precipitate accumulated at the bottom of the slag discharge pipe to the outside of the slag discharge pipe, thereby realizing the automatic slag discharge operation. The above-mentioned slag discharge assembly has a better sedimentation and slag retaining effect, and can realize the automatic slag discharge operation, effectively improving the treatment and purification efficiency of thallium-containing wastewater.

[0017] Optionally, the driving component includes a motor, a winding wheel and a pull wire, the motor casing and the slag discharge pipe are fixedly connected, the winding wheel and the output shaft of the motor are fixedly connected, one end of the pull wire is wound on the winding wheel, and the other end is connected to the slag blocking plate.

[0018] By adopting the above technical solution, when slag discharge is required, the motor is started, and the motor's output shaft drives the winding wheel to rotate. As the winding wheel rotates, the pull wire is wound onto the winding wheel, and the pull wire drives the slag retaining plate to slide away from the sedimentation bucket. As the slag retaining plate slides, it clears the sediment accumulated in the slag discharge pipe. The above-mentioned driving element can realize automatic slag discharge operation, effectively improving the efficiency of slag discharge, and thus effectively improving the efficiency of treatment and purification of thallium-containing wastewater.

[0019] Optionally, the slag retaining plate is fixedly connected to a plurality of support rods in a circumferential direction, a slide groove matching the support rods is provided inside the slag discharge pipe, the end of the support rod is slidably connected in the slide groove, and a second spring is provided in the slide groove for driving the slag retaining plate to reset.

[0020] By adopting the above technical solution, when a slag discharge operation is completed, the motor reverses, thereby tending to the winding wheel to perform the wire-releasing operation. Under the action of the second spring, the slag blocking plate can be automatically reset to facilitate the next slag discharge operation.

[0021] Optionally, the slag discharge assembly also includes an adjusting part, which includes an expansion piece, an adjusting disk and a first spring. There are multiple expansion pieces, and the multiple expansion pieces are evenly spaced along the circumference of the slag stop plate. An installation cavity is opened inside the slag stop plate, and the expansion piece is slidably connected to the slag stop plate. A third spring is provided on the expansion piece, and the third spring drives the expansion piece to shrink into the installation cavity. The adjusting disk is located in the installation cavity, and the adjusting disk is connected to the slag stop plate through the first spring. One end of the expansion piece extends into the installation cavity and abuts against the peripheral wall of the adjusting disk. The diameter of the adjusting disk gradually decreases in the direction away from the sedimentation bucket, and the end of the pull wire away from the motor is fixedly connected to the adjusting disk.

[0022] By adopting the above technical solution, when the pull wire drives the slag stop plate to slide, the pull wire drives the adjustment plate to move in the direction away from the sedimentation bucket, thereby compressing the first spring. During the movement of the adjustment plate, the expansion plate is squeezed, thereby driving the expansion plate to slide outside the slag stop plate to block the gap between the falling materials. The pull wire then continues to pull the slag stop plate to slide to perform the slag discharge operation. After the slag discharge is completed, the motor is reversed, the adjustment plate is reset under the action of the first spring, the slag stop plate is reset under the action of the first spring seat, and the expansion plate is retracted into the installation cavity under the action of the third spring, so that the next slag discharge operation can be carried out.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The treatment method of the present application can comprehensively treat thallium-containing wastewater and desulfurization wastewater, and can simultaneously remove thallium in thallium-containing wastewater and heavy metal ions in desulfurization wastewater, thereby achieving the purpose of treating waste with waste, and then a clean purified liquid can be obtained. The method of the present application can quickly precipitate the thallium-containing precipitate in the mixed wastewater, thereby helping to improve the treatment efficiency of the wastewater, and the Fe(OH)3 flocculation precipitate formed can absorb Ti in the mixed wastewater. 3+ and Ti(OH)3 precipitation, thus effectively improving the purification effect of thallium-containing wastewater;

[0025] 2. The treatment equipment of the present application has a good sedimentation and slag blocking effect through the above-mentioned slag discharge component, and can realize automatic slag discharge operation, thereby effectively improving the treatment and purification efficiency of thallium-containing wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a treatment device for thallium-containing wastewater in a non-ferrous metal smelting process according to an embodiment of the present application;

[0027] Figure 2 This is a longitudinal cross-sectional view of a treatment device for thallium-containing wastewater in a non-ferrous metal smelting process according to an embodiment of the present application;

[0028] Figure 3 yes Figure 2 Magnified view of section A;

[0029] Figure 4 yes Figure 1 Magnified view of part B.

[0030] Figure numerals: 1, reaction tower; 11, water pipe; 111, solenoid valve; 12, feeding pipe; 13, guide plate; 2, sedimentation bucket; 3, water inlet pipe; 4, water outlet pipe; 41, filter element; 5, slag discharge assembly; 51, slag discharge pipe; 511, end cover; 512, chute; 5121, second spring; 52, slag retaining plate; 521, support rod; 522, blanking gap; 523, installation cavity; 53, driving part; 531, motor; 532, winding wheel; 533, pulling wire; 54, adjusting part; 541, expansion plate; 5411, third spring; 542, adjusting plate; 543, first spring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The implementation principle of the method for treating thallium-containing wastewater in the non-ferrous metal smelting process of the present application is as follows: after adding lime milk, a large amount of hydroxide ions are introduced into the mixed waste liquid system to generate Ti(OH)3 precipitation. In order to make the Ti(OH)3 precipitation quickly and completely precipitate, the present application adopts a comprehensive treatment of desulfurization wastewater. Since desulfurization wastewater contains more metal ions, especially Fe 3+ Therefore, after adding lime milk, it can be combined with Fe 3+ The reaction produces Fe(OH)3 precipitation. Fe(OH)3 flocculation precipitation has the characteristics of adsorbing heavy metal ions and precipitating them. Therefore, Fe(OH)3 flocculation precipitation is beneficial to further adsorb Ti in the mixed wastewater that has not reacted with lime milk. 3+ Moreover, Fe(OH)3 flocculation precipitation is also beneficial to the adsorption of Ti(OH)3 precipitate and its copolymerization, which is beneficial to the formation of larger precipitation aggregation groups, which is beneficial to the rapid sedimentation of thallium-containing precipitates, and thus is beneficial to greatly improve the treatment efficiency of waste liquid.

[0033] The present application also discloses a device for treating thallium-containing wastewater in a non-ferrous metal smelting process, using the above-mentioned method for treating thallium-containing wastewater in a non-ferrous metal smelting process, referring to Figure 1 and Figure 2The processing equipment includes a reaction tower 1, a settling bucket 2, a water inlet pipe 3, a water outlet pipe 4 and a slag discharge assembly 5.

[0034] Reference Figure 1 and Figure 2 The reaction tower 1 is a hollow cylindrical shape, the settling hopper 2 is a hollow inverted cone, the maximum diameter of the settling hopper 2 is equal to the diameter of the reaction tower 1, the settling hopper 2 is coaxially arranged at the bottom of the reaction tower 1, the settling hopper 2 is coaxially welded to the bottom of the reaction tower 1, and a through water pipe 11 is provided at the connection between the settling hopper 2 and the reaction tower 1. A solenoid valve 111 is provided in the water pipe 11. The top of the reaction tower 1 and the side wall of the settling hopper 2 are respectively fixedly connected with a feeding pipe 12. The feeding pipe 12 at the top of the reaction tower 1 is used to add an acidulant and an oxidant into the reaction tower 1, and the feeding pipe 12 on the side wall of the settling hopper 2 is used to add lime milk into the settling hopper 2.

[0035] Reference Figure 1 and Figure 2 There are two water inlet pipes 3, which are evenly spaced along the circumference of the reaction tower 1. The axis of the water inlet pipe 3 is consistent with the tangent direction of the cross-section circle of the reaction tower 1. The water inlet pipe 3 is fixedly connected to the reaction tower 1, and the water inlet directions of the two water inlet pipes 3 are opposite; a spirally arranged guide plate 13 is welded on the inner wall of the reaction tower 1, and the width of the guide plate 13 gradually decreases from top to bottom. The water outlet pipe 4 is coaxially arranged in the reaction tower 1 and is fixedly connected to the reaction tower 1. One end of the water outlet pipe 4 extends to the top of the reaction tower 1 and the other end extends into the sedimentation bucket 2. A filter element 41 is fixedly connected to the end of the water outlet pipe 4 extending into the sedimentation bucket 2, and a pumping device for water outlet is provided at the end of the water outlet pipe 4 extending to the top of the reaction tower 1.

[0036] Reference Figure 2 、 Figure 3 and Figure 4 The slag removal assembly includes a slag discharge pipe 51, a slag blocking plate 52, a driving member 53 and an adjusting member 54. The slag discharge pipe 51 is semicircular. One end of the slag discharge pipe 51 is fixedly connected to the end with a smaller diameter of the sedimentation bucket 2. The end of the slag discharge pipe 51 away from the sedimentation bucket 2 is threadedly connected to the end cover 511.

[0037] Reference Figure 2 、 Figure 3 and Figure 4The slag retaining plate 52 is conical in shape and is circumferentially welded with three support rods 521, which are evenly spaced along the circumference of the slag retaining plate 52. A chute 512 matching the support rods 521 is formed on the inner wall of the slag discharge pipe 51. The ends of the support rods 521 are slidably connected within the chute 512. A second spring 5121 is provided within the chute 512. One end of the second spring 5121 is welded to the end of the chute 512, and the other end is welded to the end of the support rod 521 located within the chute 512. The second spring 5121 has a tendency to drive the slag retaining plate 52 to slide toward the sedimentation bucket 2. The diameter of the slag retaining plate 52 gradually decreases as it approaches the slag retaining plate 52. The slag retaining plate 52 and the slag discharge pipe 51 form a material drop gap 522 for sediment to fall and accumulate. The driving member 53 is used to drive the slag retaining plate 52 to slide within the slag discharge pipe 51.

[0038] Reference Figure 2 、 Figure 3 and Figure 4 The adjusting member 54 includes an expansion piece 541, an adjusting disk 542 and a first spring 543. There are multiple expansion pieces 541. In this embodiment, there are six expansion pieces 541. The six expansion pieces 541 are evenly distributed along the circumference of the slag stop plate 52. The expansion piece 541 is slidably connected to the slag stop plate 52. A circular mounting cavity 523 is provided inside the slag stop plate 52. One end of the expansion piece 541 extends into the mounting cavity 523. A third spring 5411 is provided on the expansion piece 541. The end of the two expansion pieces 541 located in the mounting cavity 523 is fixedly connected by a third spring 5411. The adjusting disk 542 is located in the installation cavity 523. The adjusting disk 542 is fixedly connected to the slag retaining plate 52 through the first spring 543. One end of the expansion piece 541 extends into the installation cavity 523 and abuts against the peripheral wall of the adjusting disk 542. The diameter of the adjusting disk 542 gradually decreases in the direction away from the sedimentation bucket 2. The first spring 543 has a tendency to drive the adjusting disk 542 to move toward the direction close to the sedimentation bucket 2.

[0039] Reference Figure 2 、 Figure 3 and Figure 4 The driving member 53 includes a motor 531, a winding wheel 532 and a pulling wire 533. The housing of the motor 531 is fixedly connected to the slag discharge pipe 51. The winding wheel 532 is coaxially fixedly connected to the output shaft of the motor 531 using a key. One end of the pulling wire 533 is wound on the winding wheel 532, and the other end is fixed on the winding wheel 532.

[0040] The implementation principle of the treatment equipment of thallium-containing wastewater in the non-ferrous metal smelting process of the embodiment of the present application is as follows: when working, the thallium-containing wastewater and the desulfurization wastewater are respectively introduced into the reaction tower 1 through two water inlet pipes 3, and then the acidifier and the oxidant are sequentially added into the reaction tower 1 through the feeding pipe 12. After the reaction is complete, the pre-treated waste liquid is obtained, and then the solenoid valve 111 is opened to introduce the pre-treated waste liquid into the sedimentation bucket 2, and then lime milk is added into the sedimentation bucket 2 through the feeding pipe 12 to form Ti(OH)3 precipitate and Fe(OH)3 flocculation precipitation, and the Fe(OH)3 flocculation precipitation adsorbs the Ti(OH)3 precipitate and Ti(OH)3 precipitate. 3+ Finally, a larger precipitation aggregation group is formed. The precipitate formed by the mixed waste liquid in the sedimentation bucket 2 flows into the slag discharge pipe 51 through the slag retaining plate 52. The semicircular slag discharge pipe 51 is conducive to the accumulation of precipitates at the bottom of the slag discharge pipe 51.

[0041] After processing for a period of time, the slag in the slag discharge pipe 51 needs to be cleaned. When cleaning, first open the end cover 511 at the other end of the slag discharge pipe 51, and then start the motor 531. The output shaft of the motor 531 drives the winding wheel 532 to rotate. When the winding wheel 532 rotates, the pull wire 533 is wound onto the winding wheel 532. The other end of the pull wire 533 drives the adjusting disk 542 to move in the direction away from the sedimentation bucket 2, thereby compressing the first spring 543. During the movement of the adjusting disk 542, the expansion piece 541 is squeezed, thereby driving the expansion piece 541 to slide outside the slag blocking plate 52 to block the blanking gap 522. Then the pull wire 533 continues to pull the slag blocking plate 52 to slide and the slag can be pushed out of the slag discharge pipe 51. When a slag discharge operation is completed, the motor 531 reverses, thereby tending to drive the winding wheel 532 to perform the wire-releasing operation. Under the action of the second spring 5121, the slag retaining plate 52 can be automatically reset. Under the action of the first spring 543 and the third spring 5411, the expansion piece 541 shrinks to the installation cavity 523, so that the blanking gap 522 is connected, so as to continue the sedimentation treatment and perform the next slag discharge operation.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A treatment device for thallium-containing wastewater in a non-ferrous metal smelting process, characterized by: The treatment equipment comprises a reaction tower (1), a settling bucket (2), a water inlet pipe (3) and a water outlet pipe (4); the settling bucket (2) is coaxially arranged at the bottom of the reaction tower (1); the settling bucket (2) is fixedly connected to the bottom of the reaction tower (1); the diameter of the settling bucket (2) gradually decreases in the direction away from the reaction tower (1); a through water pipe (11) is provided at the connection between the settling bucket (2) and the reaction tower (1); a solenoid valve (111) is provided in the water pipe (11); and two feeding pipes (12) are respectively connected to the reaction tower (1) and the settling bucket (2); The water inlet pipe (3) is provided with two water inlet pipes for respectively entering thallium-containing wastewater and iron-containing desulfurization wastewater. The two water inlet pipes (3) are both fixedly connected to the reaction tower (1). The water outlet pipe (4) is coaxially arranged in the reaction tower (1). One end of the water outlet pipe (4) extends to the top of the reaction tower (1) and the other end extends to the sedimentation bucket (2). A filter element (41) is fixedly connected to the end of the water outlet pipe (4) extending into the sedimentation bucket (2); The processing equipment also includes a slag removal component, which includes a slag discharge pipe (51), a slag retaining plate (52) and a driving member (53). The slag discharge pipe (51) is semicircular, and one end of the slag discharge pipe (51) is fixedly connected to the bottom of the sedimentation bucket (2). The slag retaining plate (52) is conical, and the diameter of the slag retaining plate (52) gradually decreases toward the sedimentation bucket (2). The slag retaining plate (52) is slidably connected to the slag discharge pipe (51), and a material drop gap (522) for sediment to pass through is formed between the slag retaining plate (52) and the pipe wall of the slag discharge pipe (51). The driving member (53) is used to drive the slag retaining plate (52) to slide in the slag discharge pipe (51); During operation, thallium-containing wastewater and desulfurization wastewater are respectively introduced into the reaction tower through two water inlet pipes, and then acidifier and oxidant are sequentially added into the reaction tower through the feeding pipe. After the reaction is complete, pre-treated waste liquid is obtained. Then, the solenoid valve is opened to introduce the pre-treated waste liquid into the sedimentation bucket, and then lime milk is added into the sedimentation bucket through the feeding pipe to form Ti(OH)3 precipitate and Fe(OH)3 flocculation precipitation. The Fe(OH)3 flocculation precipitation adsorbs Ti(OH)3 precipitate and Ti 3+ Finally, a larger precipitation aggregate is formed, which can then quickly settle at the bottom of the sedimentation bucket, thereby separating the sediment from the liquid. The supernatant is then discharged through the outlet pipe to obtain clean purified liquid.

2. The treatment equipment for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 1, characterized in that: The two water inlet pipes (3) are evenly spaced along the circumference of the reaction tower (1); the axis of the water inlet pipe (3) is consistent with the tangent direction of the cross-section circle of the reaction tower (1); and the water inlet directions of the two water inlet pipes (3) are opposite.

3. The treatment equipment for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 1, characterized in that: A spirally arranged guide plate (13) is fixedly connected to the inner wall of the reaction tower (1), and the width of the guide plate (13) gradually decreases from top to bottom.

4. The treatment equipment for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 1, characterized in that: The driving member (53) comprises a motor (531), a winding wheel (532) and a pulling wire (533); the housing of the motor (531) is fixedly connected to the slag discharge pipe (51); the winding wheel (532) is fixedly connected to the output shaft of the motor (531); one end of the pulling wire (533) is wound around the winding wheel (532) and the other end is connected to the slag blocking plate (52).

5. The treatment equipment for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 3, characterized in that: The slag retaining plate (52) is circumferentially fixedly connected with a plurality of support rods (521); a chute (512) matching the support rods (521) is provided inside the slag discharge pipe (51); the end of the support rod (521) is slidably connected in the chute (512); a second spring (5121) for driving the slag retaining plate (52) to return to its original position is provided in the chute (512).

6. The treatment equipment for thallium-containing wastewater in a non-ferrous metal smelting process according to claim 4, characterized in that: The slag removal assembly (5) further includes an adjusting member (54), the adjusting member (54) including an expansion piece (541), an adjusting disk (542) and a first spring (543), a plurality of expansion pieces (541) are provided, and the plurality of expansion pieces (541) are evenly distributed along the circumference of the slag retaining plate (52), an installation cavity (523) is provided inside the slag retaining plate (52), the expansion piece (541) is slidably connected to the slag retaining plate (52), a third spring (5411) is provided on the expansion piece (541), and the third spring (5411) drives the expansion piece (541) to move. The sheet (541) is retracted into the mounting cavity (523), the adjusting disk (542) is located in the mounting cavity (523), the adjusting disk (542) is connected to the slag retaining plate (52) through the first spring (543), one end of the expansion sheet (541) extends into the mounting cavity (523) and abuts against the peripheral wall of the adjusting disk (542), the diameter of the adjusting disk (542) gradually decreases in the direction away from the sedimentation bucket (2), and the end of the pull wire (533) away from the motor (531) is fixedly connected to the adjusting disk (542).

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