CN115286146B

CN115286146B - Treatment method of electroplating cyanide-containing waste liquid

Info

Publication number: CN115286146B
Application number: CN202211065744.2A
Authority: CN
Inventors: 杨娜; 钱凤; 王杰; 赵姣
Original assignee: Ji'an Chuangcheng Environmental Protection Technology Co ltd
Current assignee: Ji'an Chuangcheng Environmental Protection Technology Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-04-18
Anticipated expiration: 2042-09-01
Also published as: CN115286146A

Abstract

The invention relates to the field of waste liquid recycling, in particular to a method for treating cyanide-containing electroplating waste liquid, which comprises three groups of purification devices and an L-shaped tube, wherein the purification devices are connected in pairs, the three groups of purification devices are positioned in the L-shaped tube, the three groups of purification devices are fixedly connected with the inner side wall of the L-shaped tube, each purification device comprises four groups of clamping components, and the four groups of clamping components are arranged in a circumferential array.

Description

Treatment method of electroplating cyanide-containing waste liquid

Technical Field

The invention relates to the field of waste liquid recycling, in particular to a method for treating cyanide-containing electroplating waste liquid.

Background

Cyanide-containing wastewater, cyanide-containing wastewater. Cyanides are classified into two groups, one being inorganic cyanides such as hydrocyanic acid and salts thereof; one is an organic cyanide or nitrile, such as acrylonitrile, acetonitrile, and the like, which is characterized by the tendency to form complexes with certain metals. Nitriles are compounds in which a hydrocarbon group is attached to a carbon atom of a cyano group, and have a special odor. The coking process of coal, the production of polyacrylonitrile fiber by hydrogen cyanide (ECN), the production of metal electroplating, ore flotation and dyes, drugs and plastics by sodium cyanide, the electrolytic refining of platinum by potassium cyanide, the coloring of metals, electroplating and pharmaceuticals all produce cyanide-containing waste water. For example, the cyanide content (calculated as HCN) in condensed water of a coke-oven plant is about 55mg/L, and the cyanide content in ammonia water is 200-2000 mg/L; in the acrylonitrile production, about 110 to 120kg of acetonitrile and 50 to 100kg of HCN are discharged per 1t of acrylonitrile produced, and the concentration of cyanide ions in the electroplating cyanide-containing wastewater is about 20 to 70mg/L. Electroplating with cyanogen-containing water, generally by alkaline chlorination or electrolysis;

in economic construction, industrial production such as non-ferrous metal smelting, metal processing, coking, electroplating, chemical industry, tanning, instruments, ore dressing and the like is continuously developed, and the cyanide-containing wastewater is mainly derived from the industrial production. Cyanide is a good complexing agent in electroplating and is widely used. Cyanide has extremely high complexing ability, and can generate a complex with zinc, cadmium, copper, silver, gold and the like, so that the cyanide electroplating solution consisting of the cyanide complex has excellent performance. However, because cyanide has strong toxicity, when the cyanide is inhaled into human body in excess, the cyanide can cause poisoning of human body, seriously harms the health, so the waste water after electroplating needs to be subjected to decyanation treatment;

the existing method for treating the electroplating wastewater containing cyanide ions generally comprises the step of carrying out cyanide breaking treatment on ion exchange resin CN-ion exchange resin, namely an oxidation method, for example, an alkaline chlorination method is adopted, namely chlorine series oxidant is added into the cyanide-containing wastewater to oxidize part of cyanide into cyanate with lower toxicity, and carbon dioxide and nitrogen can be oxidized in one step; the other method is an electrolytic method, the cyanogen breaking treatment is realized by oxidizing the ion exchange resin CN-ion exchange resin through electrolysis, and the method also needs to consume a large amount of energy;

therefore, it is necessary to develop a method for treating the waste liquid containing cyanogen in electroplating.

Disclosure of Invention

Therefore, the invention provides a method for treating cyanide-containing electroplating waste liquid, which uses porous activated carbon as a catalyst to accelerate the oxidation reaction of the cyanide-containing waste liquid and ozone so as to reduce the content of cyanide in the cyanide-containing waste liquid, and simultaneously uses a second impeller to generate negative pressure to absorb the cyanide-containing waste liquid so as to ensure that the waste liquid moves in opposite directions in an activated carbon leaching container and is continuously and fully contacted, thereby solving the problems of energy waste caused by the need of preparing a large amount of oxidants, difficult catalyst recovery, slow oxidation reaction and low cyanide removal efficiency.

In order to achieve the above purpose, the invention provides the following technical scheme: the method for treating the cyanide-containing waste electroplating solution comprises three groups of purification devices and an L-shaped pipe, wherein the purification devices are connected in pairs, the purification devices are located in the L-shaped pipe, the purification devices are fixedly connected with the inner side wall of the L-shaped pipe, each purification device comprises four groups of clamping assemblies, and the four groups of clamping assemblies are arranged in a circumferential array;

clamping component includes the base, the slide rail has been seted up to base front end bottom, the sliding tray has been seted up at base front end top, the equal fixed mounting of base rear end both sides inner wall has compression spring, base rear end bottom sliding connection has two sets of triangle slides, and is two sets of the compression spring other end respectively with two sets of triangle slide lateral wall fixed connection, it is two sets of triangle slide middle part is equipped with the tension spring, the tension spring both ends respectively with two sets of triangle slide inside wall fixed connection, it is two sets of triangle slide middle part all rotates and is connected with the bull stick, the base front end is equipped with two sets of spacing posts, and is two sets of the bull stick middle part rotates with two sets of spacing posts respectively and is connected.

Preferably, the clamping component still includes the mount pad, the mount pad is equipped with two sets ofly, mount pad one side fixed mounting has the post of inserting, and is two sets of insert the post all with sliding tray sliding connection, mount pad opposite side fixed mounting has the mount pad, and is two sets of the mount pad all rotates with two sets of bull sticks end to be connected, and is two sets of insert the post bottom and all be located inside the slide rail, and with slide rail sliding connection, it is two sets of the equal fixed mounting of mount pad front end both sides inner wall has the bottom plate, mount pad lateral wall fixed mounting has the multiunit baffle, the bottom plate forms the active carbon installing zone with the multiunit baffle, the multiunit the inside equal joint of active carbon installing zone has the porous active carbon.

Preferably, four clamping components middle parts are equipped with the cross seat, the slot has all been seted up to cross seat lateral wall all around, four groups the base end all pegs graft with the slot, the cross seat top is equipped with the footstock, the footstock aligns with the cross seat lateral wall, cross seat bottom is equipped with the cassette, cassette lateral wall fixed mounting has two sets of fixture blocks, and is two sets of the fixture block respectively with footstock, cross seat joint, cassette bottom lateral wall is connected with the bearing.

Preferably, the clamping component bottom is equipped with a cylinder wall, a first impeller is fixedly mounted on the inner side wall of the cylinder wall, five groups of fan-shaped liquid outlet areas are arranged between the first impeller and the cylinder wall, five groups of liquid outlet holes are arranged in the middle of the first impeller, the middle of the first impeller is connected with the outer ring of the bearing, a second impeller is arranged at the bottom of the first impeller, the first impeller and the second impeller are coaxial, a positioning rotating shaft is fixedly mounted in the middle of the second impeller, the positioning rotating shaft penetrates through the middle of the clamping seat and is not in contact with the clamping seat, the front end of the positioning rotating shaft is rotatably connected with the top seat, a centrifugal blade is fixedly mounted at the bottom of the second impeller, a cross blade is fixedly mounted on the centrifugal blade, and the centrifugal blade and the cross blade form a liquid channel.

Preferably, the inner side wall of the L-shaped pipe is fixedly connected with the outer side walls of the three cylinder walls, a three-way pipe is fixedly mounted at the top end of the L-shaped pipe, one end of the three-way pipe is closed, a servo motor is fixedly mounted at the other end of the three-way pipe, and an output shaft of the servo motor is fixedly connected with the top end of the positioning rotating shaft.

Preferably, the method for treating the cyanide-containing electroplating waste liquid further comprises the following specific operation steps:

s1: soaking porous activated carbon in a large amount of distilled water for 4 hours before use, then placing the cleaned porous activated carbon in a vacuum drying oven, drying at 105 ℃ until the weight is constant, sieving, selecting the porous activated carbon with the same particle size, installing the porous activated carbon on an activated carbon installation area, then placing the device in cyanide-containing wastewater, and introducing ozone into the cyanide-containing wastewater;

s2: the servo motor is started, and an output shaft of the servo motor drives the second impeller and the centrifugal blades and the cross blades on the second impeller to rotate, so that negative pressure is generated in the rotating process of the centrifugal blades and the cross blades on the second impeller, cyanide-containing wastewater is pumped to enter the lower part of the first impeller through a liquid channel formed by the centrifugal blades and the cross blades, and then is discharged from a fan-shaped liquid outlet area formed by the first impeller and the barrel wall under the action of centrifugal force;

s3: discharged cyanide-containing waste water will pass through clamping component, under cyanide-containing waste water's impact, two sets of triangle slides all slide to the outside, compression spring is compressed this moment, it is tensile to draw the spring, simultaneously under the effect of spacing post, two sets of bull stick outer ends all move to the inboard, thereby drive two sets of mounts and move to the inboard, make two sets of mounts can press from both sides tight porous active carbon, when cyanide-containing waste water and ozone are through porous active carbon, porous active carbon can accelerate catalysis cyanide-containing waste water and ozone's reaction, thereby accelerate the oxidation to cyanide-containing waste water, make the cyanogen content in the cyanide-containing waste water can reach the standard.

The beneficial effects of the invention are:

1. the servo motor is started, and an output shaft of the servo motor drives the second impeller and the centrifugal blades and the cross blades on the second impeller to rotate, so that negative pressure is generated in the rotating process of the centrifugal blades and the cross blades on the second impeller, cyanide-containing wastewater is pumped to enter the lower part of the first impeller through a liquid channel formed by the centrifugal blades and the cross blades and then is discharged from a fan-shaped liquid outlet area formed by the first impeller and the barrel wall under the action of centrifugal force, and therefore, the waste liquid moves in opposite directions in the activated carbon leaching container and is continuously and fully contacted with activated carbon, and the catalytic efficiency is greatly improved;

2. when cyanide-containing waste water will pass through clamping component, under cyanide-containing waste water's impact, two sets of triangle slides all slide to the outside, compression spring is compressed this moment, tension spring is stretched, simultaneously under spacing post's effect, two sets of bull stick outer ends all move to the inboard, thereby drive two sets of mounts and move to the inboard, make two sets of mounts can press from both sides the tight porous active carbon, when cyanide-containing waste water and ozone pass through the porous active carbon, the porous active carbon can accelerate the reaction of catalysis cyanide-containing waste water and ozone, thereby the oxidation to cyanide-containing waste water with higher speed, thereby avoided needing to prepare a large amount of oxidants, can avoid dosing in the waste water, can reduce the degree of mineralization of waste water, clamping component can press from both sides tight active carbon under the circumstances of liquid countercurrent simultaneously, be convenient for retrieve the change catalyst.

Drawings

FIG. 1 is a schematic view of the structure of the apparatus provided by the present invention;

FIG. 2 is a partial cross-sectional view of the apparatus provided by the present invention;

FIG. 3 is a schematic structural diagram of a purification apparatus provided by the present invention;

FIG. 4 is an exploded view of a purification apparatus provided by the present invention;

FIG. 5 is a position distribution diagram of a sector-shaped liquid outlet area provided by the present invention;

FIG. 6 is a partial cross-sectional view of the internal structure of the cartridge wall provided by the present invention;

FIG. 7 is an installation view of the first impeller and the second impeller provided by the present invention;

FIG. 8 is a view of the mounting position of the centrifugal blade provided by the present invention;

FIG. 9 is a view of the installation position of the cross blades provided by the present invention;

FIG. 10 is a schematic view of a four-pack clamp assembly according to the present invention;

FIG. 11 is a schematic view of a clamp assembly according to the present invention;

FIG. 12 is a schematic view of the structure of the components on the base according to the present invention;

FIG. 13 is an installation diagram of porous activated carbon provided by the present invention;

FIG. 14 is a schematic structural view of various components of the positioning shaft according to the present invention;

FIG. 15 is an exploded view of the components of the positioning shaft provided by the present invention;

FIG. 16 is a half sectional view of the positioning shaft of the present invention;

fig. 17 is a top perspective view of the components of the positioning spindle provided by the present invention.

In the figure: the device comprises a purification device 100, a clamping assembly 110, a base 111, a sliding rail 112, a sliding groove 113, a triangular sliding seat 114, a rotating rod 115, a compression spring 116, a tension spring 117, a limiting column 118, a mounting seat 120, an inserting column 121, a bottom plate 122, a partition plate 123, porous activated carbon 124, a mounting column 125, an activated carbon mounting area 126, a top seat 130, a cross seat 140, a slot 141, a positioning rotating shaft 150, a clamping seat 160, a clamping block 161, a bearing 170, a cylinder wall 180, a first impeller 181, a fan-shaped liquid outlet area 182, a liquid outlet hole 183, a second impeller 184, a centrifugal blade 185, a cross blade 186, an L-shaped pipe 200, a three-way pipe 210 and a servo motor 220.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1-17, the method for treating cyanide-containing electroplating waste liquid provided by the invention comprises three groups of purification devices 100 and L-shaped tubes 200, wherein the purification devices 100 are three groups, the three groups of purification devices 100 are connected in pairs, the three groups of purification devices 100 are all positioned in the L-shaped tubes 200, the three groups of purification devices 100 are all fixedly connected with the inner side walls of the L-shaped tubes 200, each purification device 100 comprises four clamping assemblies 110, the clamping assemblies 110 are four groups, and the four groups of clamping assemblies 110 are arranged in a circumferential array;

the clamping assembly 110 comprises a base 111, a slide rail 112 is disposed at the bottom of the front end of the base 111, a slide groove 113 is disposed at the top of the front end of the base 111, the bottom of an insert column 121 is slidably connected with the slide rail 112, the top end of the insert column is slidably connected with the slide groove 113, so as to ensure that the mounting seat 120 always moves in the horizontal direction and prevent the mounting seat 120 from being detached, compression springs 116 are fixedly mounted on the inner walls of the two sides of the rear end of the base 111, two sets of triangular slide seats 114 are slidably connected with the bottom of the rear end of the base 111, the other ends of the two sets of compression springs 116 are respectively fixedly connected with the outer side walls of the two sets of triangular slide seats 114, tension springs 117 are disposed in the middle of the two sets of triangular slide seats 114, rotation rods 115 are rotatably connected with the middle of the two sets of triangular slide seats 114, two sets of limiting columns 118 are disposed at the front end of the base 111, and two sets of rotation rods 115 are respectively rotatably connected with the two sets of limiting columns 118, the clamping assembly 110 further comprises a mounting seat 120, two sets of mounting seats 120 are provided, one side of the mounting seat 120 is fixedly provided with inserting columns 121, the two sets of inserting columns 121 are both slidably connected with the sliding groove 113, the other side of the mounting seat 120 is fixedly provided with mounting columns 125, the two sets of mounting columns 125 are both rotatably connected with the tail ends of the two sets of rotating rods 115, the bottoms of the two sets of inserting columns 121 are both positioned inside the sliding rail 112 and are slidably connected with the sliding rail 112, the inner walls of the two sides of the front end of the two sets of mounting seats 120 are both fixedly provided with bottom plates 122, the side walls of the mounting seat 120 are fixedly provided with a plurality of partition plates 123, the bottom plates 122 and the plurality of partition plates 123 form an activated carbon mounting area 126, the inside of the plurality of activated carbon mounting areas 126 is respectively clamped with porous activated carbon 124, specifically, under the impact effect of cyanide-containing wastewater, the two sets of triangular sliding seats 114 both slide outwards slide, at the moment, the compression springs 116 are compressed, the tension springs 117 are stretched, and under the effect of the limiting columns 118, the outer ends of the two sets of rotating rods 115 move inwards to drive the two sets of mounting seats 120 to move inwards, so that the two sets of mounting seats 120 can clamp the porous activated carbon 124, particularly, the porous activated carbon 124 is soaked in a large amount of distilled water for 4 hours before use, then the cleaned porous activated carbon 124 is placed in a vacuum drying box and dried at 105 ℃ until the weight is constant, and the prepared porous activated carbon 124 has the highest catalytic efficiency.

Further, a cross base 140 is arranged in the middle of the four clamping assemblies 110, slots 141 are formed in the outer side walls of the four sides of the cross base 140, the ends of the four bases 111 are inserted into the slots 141, the four bases 111 are installed together through the slots 141, meanwhile, in the longitudinal direction, the arrangement of the three bases 111 should reduce the overlapping part, so as to ensure that the cyanide-containing wastewater can contact with the porous activated carbon 124 to the maximum extent, a top base 130 is arranged at the top end of the cross base 140, the top base 130 is aligned with the side walls of the cross base 140, a clamping base 160 is arranged at the bottom of the cross base 140, two clamping blocks 161 are fixedly installed on the outer side walls of the clamping base 160, the two clamping blocks 161 are respectively clamped with the top base 130 and the cross base 140, the clamping blocks 161 are inserted into the side walls of the top base 130 and the cross base 140, so as to fix the top base 130 and the cross base 140, a bearing 170 is connected to the outer side wall of the bottom of the clamping base 160, a cylinder wall 180 is arranged at the bottom of the clamping assembly 110, a first impeller 181 is fixedly installed on the inner side wall of the cylinder wall 180, five groups of fan-shaped liquid outlet areas 182 are arranged between the first impeller 181 and the cylinder wall 180, five groups of liquid outlet holes 183 are arranged in the middle of the first impeller 181, the middle of the first impeller 181 is connected with the outer ring of the bearing 170, a second impeller 184 is arranged at the bottom of the first impeller 181, the first impeller 181 and the second impeller 184 are coaxial, a positioning rotating shaft 150 is fixedly installed in the middle of the second impeller 184, the positioning rotating shaft 150 penetrates through the middle of the clamping seat 160 and is not in contact with the clamping seat 160, the front end of the positioning rotating shaft 150 is rotatably connected with the top seat 130, a centrifugal blade 185 is fixedly installed at the bottom of the second impeller 184, a cross blade 186 is fixedly installed on the centrifugal blade 185, the centrifugal blade 185 and the cross blade 186 form a liquid channel, when the second impeller 184 drives the cross blade 186 and the centrifugal blade 185 to rotate, negative pressure is generated at the formed liquid channel port, so as to extract cyanide-containing wastewater, specifically, the servo motor 220 is started, and an output shaft of the servo motor 220 drives the second impeller 184 and the centrifugal blades 185 and the cross blades 186 on the second impeller 184 to rotate, so that negative pressure is generated in the rotating process of the centrifugal blades 185 and the cross blades 186 on the second impeller 184, cyanide-containing wastewater is pumped to enter the lower part of the first impeller 181 through a liquid channel formed by the centrifugal blades 185 and the cross blades 186, and then is discharged from the fan-shaped liquid outlet area 182 formed by the first impeller 181 and the cylinder wall 180 under the action of centrifugal force.

Further, the inner side wall of the L-shaped pipe 200 is fixedly connected with the outer side walls of the three cylinder walls 180, a three-way pipe 210 is fixedly mounted at the top end of the L-shaped pipe 200, one end of the three-way pipe 210 is closed, the other end of the three-way pipe 210 is externally connected with an ozone collecting device and can absorb unreacted ozone in cyanide-containing wastewater, a servo motor 220 is fixedly mounted at the other end of the three-way pipe 210, and an output shaft of the servo motor 220 is fixedly connected with the top end of the positioning rotating shaft 150;

the application process of the invention is as follows: the skilled person will soak the porous activated carbon 124 with a large amount of distilled water for 4h before use, then put the cleaned porous activated carbon 124 in a vacuum drying oven, dry it at 105 ℃ and then reach constant weight, sift it, select the porous activated carbon 124 with the same particle size and install it on the activated carbon installation area 126, then put the device into the cyanide-containing wastewater, and let ozone into the cyanide-containing wastewater, and start the servo motor 220, the output shaft of the servo motor 220 drives the second impeller 184 and the centrifugal blade 185 and the cross blade 186 on the second impeller 184 to rotate, therefore, the centrifugal blade 185 and the cross blade 186 on the second impeller 184 will generate negative pressure during the rotation, so as to draw the cyanide-containing wastewater into the lower part of the first impeller 181 through the liquid channel formed by the centrifugal blade 185 and the cross blade 186, then discharge from the fan-shaped liquid discharge area 182 formed by the first impeller 181 and the cylinder wall 180 under the centrifugal force, the discharged cyanide-containing wastewater will pass through the clamping assembly 110, under the impact of the cyanide-containing wastewater, the two sets of triangular springs 114 will both slide outwards, at this time the ozone compression springs 114, the ozone-containing wastewater will be able to be installed under the accelerated movement of the ozone-containing wastewater and the ozone-containing wastewater to be installed on the ozone-containing wastewater, so as to make the cyanide-containing wastewater installed wastewater to be able to react with the cyanide-containing wastewater under the ozone-containing wastewater.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it to an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.

Claims

1. The treatment method of the cyanide-containing electroplating waste liquid comprises three groups of purification devices (100) and L-shaped pipes (200), wherein the purification devices (100) are connected in pairs, the purification devices (100) are all arranged in the L-shaped pipes (200), and the purification devices (100) are all fixedly connected with the inner side walls of the L-shaped pipes (200), and is characterized in that: the purification device (100) comprises four groups of clamping assemblies (110), wherein the four groups of clamping assemblies (110) are arranged in a circumferential array;

the clamping assembly (110) comprises a base (111), a sliding rail (112) is arranged at the bottom of the front end of the base (111), a sliding groove (113) is arranged at the top of the front end of the base (111), compression springs (116) are fixedly mounted on inner walls of two sides of the rear end of the base (111), two groups of triangular sliding seats (114) are slidably connected to the bottom of the rear end of the base (111), the other ends of the two groups of compression springs (116) are fixedly connected with outer side walls of the two groups of triangular sliding seats (114), tension springs (117) are arranged in the middle of the two groups of triangular sliding seats (114), two ends of each tension spring (117) are fixedly connected with inner side walls of the two groups of triangular sliding seats (114), rotating rods (115) are rotatably connected to the middle of the two groups of triangular sliding seats (114), two groups of limiting columns (118) are arranged at the front end of the base (111), and two groups of rotating rods (115) are rotatably connected with the two groups of limiting columns (118);

a cross seat (140) is arranged in the middle of the four clamping assemblies (110), slots (141) are formed in the peripheral outer side walls of the cross seat (140), the tail ends of the four groups of bases (111) are inserted into the slots (141), a top seat (130) is arranged at the top end of the cross seat (140), the top seat (130) is aligned with the side walls of the cross seat (140), a clamping seat (160) is arranged at the bottom of the cross seat (140), two groups of clamping blocks (161) are fixedly mounted on the outer side wall of the clamping seat (160), the two groups of clamping blocks (161) are respectively clamped with the top seat (130) and the cross seat (140), and the outer side wall of the bottom of the clamping seat (160) is connected with a bearing (170);

the clamping component (110) is provided with a cylinder wall (180) at the bottom, a first impeller (181) is fixedly mounted on the inner side wall of the cylinder wall (180), five groups of fan-shaped liquid outlet areas (182) are formed between the first impeller (181) and the cylinder wall (180), five groups of liquid outlet holes (183) are formed in the middle of the first impeller (181), the middle of the first impeller (181) is connected with the outer ring of a bearing (170), a second impeller (184) is arranged at the bottom of the first impeller (181), the first impeller (181) and the second impeller (184) are coaxial, a positioning rotating shaft (150) is fixedly mounted in the middle of the second impeller (184), the positioning rotating shaft (150) penetrates through the middle of the clamping seat (160) and is not in contact with the clamping seat (160), the front end of the positioning rotating shaft (150) is rotatably connected with the top seat (130), centrifugal blades (185) are fixedly mounted at the bottom of the second impeller (184), cross blades (186) are fixedly mounted on the centrifugal blades (185), and the centrifugal blades (185) and the cross blades (186) form a liquid channel.

2. The method for treating the cyanide-containing waste electroplating solution according to claim 1, wherein the method comprises the following steps: clamping component (110) still includes mount pad (120), mount pad (120) are equipped with two sets ofly, mount pad (120) one side fixed mounting has and inserts post (121), and is two sets of insert post (121) all with sliding tray (113) sliding connection, mount pad (120) opposite side fixed mounting has erection column (125), and is two sets of erection column (125) all rotate with two sets of bull stick (115) ends to be connected, two sets of insert inside post (121) bottom all is located slide rail (112), and with slide rail (112) sliding connection, it is two sets of mount pad (120) front end both sides inner wall equal fixed mounting has bottom plate (122), mount pad (120) lateral wall fixed mounting has multiunit baffle (123), bottom plate (122) and multiunit baffle (123) form active carbon installing zone (126), multiunit the inside equal joint of active carbon installing zone (126) has porous active carbon (124).

3. The method for treating the cyanide-containing waste electroplating solution according to claim 1, wherein the method comprises the following steps: the inner side wall of the L-shaped pipe (200) is fixedly connected with the outer side walls of the three groups of cylinder walls (180), a three-way pipe (210) is fixedly installed at the top end of the L-shaped pipe (200), one end of the three-way pipe (210) is closed, a servo motor (220) is fixedly installed at the other end of the three-way pipe (210), and an output shaft of the servo motor (220) is fixedly connected with the top end of the positioning rotating shaft (150).

4. The method for treating the cyanide-containing waste electroplating solution according to claim 2, wherein the method comprises the following steps: the method also comprises the following specific operation steps:

s1: before use, the porous activated carbon (124) is soaked in a large amount of distilled water for 4 hours, then the cleaned porous activated carbon (124) is placed in a vacuum drying box, dried at 105 ℃ until the weight is constant, sieved, the porous activated carbon (124) with the same grain diameter is selected and installed on an activated carbon installation area (126), then the device is placed in cyanide-containing wastewater, and ozone is introduced into the cyanide-containing wastewater;

s2: the servo motor (220) is started, an output shaft of the servo motor (220) drives the second impeller (184) and the centrifugal blades (185) and the cross blades (186) on the second impeller (184) to rotate, so that negative pressure is generated in the rotating process of the centrifugal blades (185) and the cross blades (186) on the second impeller (184), cyanide-containing wastewater is pumped to enter the lower part of the first impeller (181) through a liquid channel formed by the centrifugal blades (185) and the cross blades (186), and then is discharged from a fan-shaped liquid outlet area (182) formed by the first impeller (181) and the cylinder wall (180) under the action of centrifugal force;

s3: discharged cyanide-containing waste water will pass through clamping component (110), under the impact effect of cyanide-containing waste water, two sets of triangle slide (114) all slide to the outside, compression spring (116) are compressed this moment, tension spring (117) are stretched, simultaneously under spacing post (118)'s effect, two sets of bull stick (115) outer ends all move to the inside, thereby drive two sets of mount pads (120) and move to the inside, make two sets of mount pads (120) can press from both sides tight porous active carbon (124), when cyanide-containing waste water and ozone pass through porous active carbon (124), porous active carbon (124) can accelerate the reaction of catalysis cyanide-containing waste water and ozone, thereby accelerate the oxidation to cyanide-containing waste water, make the cyanogen content in the cyanide-containing waste water can reach the standard.