Chemical wastewater purification device

Abstract

The utility model provides a chemical wastewater purification device which comprises a tower body with a cavity and a spraying assembly arranged in the tower body. The cavity is sequentially provided with an air floatation section, an electrolysis section and a precipitation section from top to bottom. The air floatation section is provided with a first box body, the electrolysis section is provided with a second box body, and an outlet of the first box body is formed in the second box body. And an electrolysis assembly is connected in the second box body and comprises cathode plates and anode plates which are arranged in a staggered manner. The spraying assembly comprises a fixed part fixed on the tower body and a movable part which reciprocates along the height direction of the tower body, the movable part is provided with a first atomizing nozzle which rotates along the fixed part, and the outlet end of the first box body is provided with a plurality of second atomizing nozzles. And a rotating assembly is further arranged above the electrolysis assembly and comprises a first driving part and a rotating plate connected to the power output end of the first driving part, and the rotating plate is arranged below the second atomization nozzle. The device reduces the energy consumption of chemical wastewater equipment, effectively degrades organic matters in wastewater, and improves the treatment effect.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical wastewater treatment equipment, and in particular to a chemical wastewater purification device. Background Technology

[0002] Chemical wastewater mainly originates from petrochemical and coal chemical enterprises. Petrochemical wastewater contains pollutants that are difficult to biodegrade and possess certain biotoxicity, such as benzene compounds, phenols, and cyanides. Coal chemical production processes use coal as raw material, involving coal coking, coal gasification, coal liquefaction, tar chemistry, calcium carbide acetylene chemistry, and chemical product recycling, converting coal into gaseous, liquid, and solid products, as well as various chemical products. Coking wastewater refers to the complex-component residual ammonia condensate formed during high-temperature dry distillation and coking, as well as the complex-component wastewater generated during coal gas purification and tar processing.

[0003] Coal chemical wastewater is characterized by its complex composition, containing large amounts of suspended solids, oxygen, sulfides, and other toxic and harmful substances, resulting in high COD and color levels. The pollutant concentrations vary. Coal chemical wastewater typically has a COD of 2000-5000 mg / L, ammonia nitrogen of 200-600 mg / L, and cyanide of 10-30 mg / L. The high concentrations of pollutants, including cyanide, and the presence of various recalcitrant organic compounds further contribute to its degradation. Furthermore, the high levels of organic matter in coal chemical wastewater damage soil structure and properties. The organic matter in the wastewater reacts with other substances in the soil, easily generating carcinogenic organic compounds. If these compounds enter the human body through plants, they can seriously affect human health. Direct discharge into rivers will pollute water resources and cause the extinction of aquatic life.

[0004] Existing technologies include the use of multi-effect evaporators to treat coal chemical wastewater. However, this method suffers from high energy consumption, requiring large amounts of fresh steam, necessitating a large footprint, and incurring high equipment investment and maintenance costs. Furthermore, coal chemical wastewater contains easily crystallizing substances such as sodium chloride (NaCl) and sodium sulfate (Na2SO4), and the high concentration of these substances in the wastewater can easily lead to scaling or clogging of the equipment. Utility Model Content

[0005] In view of this, the present invention aims to provide a chemical wastewater purification device that reduces the energy consumption of chemical wastewater treatment equipment, lowers maintenance costs, effectively degrades organic matter in wastewater, and improves wastewater treatment efficiency.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A chemical wastewater purification device includes a tower body with a cavity and a spray assembly disposed within the tower body.

[0008] The cavity is configured from top to bottom as an air flotation section, an electrolysis section, and a sedimentation section;

[0009] The air flotation section is provided with a first box, and the electrolysis section is provided with a second box, with the outlet end of the first box located inside the second box;

[0010] The second chamber is connected to an electrolysis assembly, which includes staggered cathode plates and anode plates;

[0011] The spray assembly includes a fixed part fixed to the tower body and a movable part that reciprocates along the height direction of the tower body. The movable part is provided with a first atomizing nozzle that rotates along the fixed part, and the outlet end of the first housing is provided with a plurality of second atomizing nozzles.

[0012] A rotating component is provided above the electrolysis component. The rotating component includes a first driving part and a rotating plate connected to the power output end of the first driving part. The rotating plate is located below the second atomizing nozzle.

[0013] Furthermore, the bottom of the first housing is provided with several diversion boxes, which are located directly above the rotating plate;

[0014] Several second atomizing nozzles are disposed at the bottom of the flow divider box.

[0015] Furthermore, the rotating plate includes an arc-shaped plate disposed on the straight rod;

[0016] The power output end of the first drive unit is connected to a rotating shaft, and the straight rod is sleeved on the rotating shaft;

[0017] The arc-shaped plate extends from the axis of rotation to the end of the straight rod, and the thickness of the arc-shaped plate gradually increases from the edge of the axis of rotation.

[0018] Furthermore, the upper surface of the arc-shaped plate is also provided with an upwardly protruding stiffener, which extends along the length direction of the straight rod.

[0019] Furthermore, the diversion box includes an upper box connected to the bottom wall of the first box, and a conical box connected to the lower part of the upper box;

[0020] The first box body has a water channel that communicates with the upper box body, and the conical box body and the interior of the upper box body form a water storage cavity;

[0021] Several second atomizing nozzles are disposed on the conical box.

[0022] Furthermore, the fixing part includes a fixing plate and a rack arranged along the extending direction of the fixing plate;

[0023] The movable part includes a sliding seat slidably connected to the rack, a second drive part connected to the sliding seat, a gear set connected to the power output end of the second drive part, and a movable shaft connected to the sliding seat.

[0024] The second drive unit drives the gear set to mesh with the rack, and the movable shaft reciprocates along the height direction of the tower body.

[0025] Furthermore, a connecting seat is provided between the sliding seat and the movable shaft;

[0026] The connecting seat is also connected to a fixed shaft, the movable shaft is sleeved on the outside of the fixed shaft, the lower end of the fixed shaft is connected to a spray head, and the spray head is connected to a third atomizing nozzle.

[0027] Furthermore, the connecting seat is provided with a third driving part, which is connected to the movable shaft via chain drive or gear drive; a rotating frame is connected to the lower part of the movable shaft, and a second bevel gear is provided inside the rotating frame;

[0028] The lower end of the fixed shaft is connected to a first bevel gear, and the second bevel gear meshes with the first bevel gear for transmission. The first bevel gear is located on the upper part of the spray head.

[0029] The second bevel gear is provided with a rotating component, and a plurality of the first atomizing nozzles are connected to the rotating component;

[0030] When the third drive unit drives the movable shaft to rotate, the second bevel gear rotates relative to the first bevel gear.

[0031] Furthermore, a water supply pipe is provided inside the fixed shaft, and the water supply pipe extends along the axial direction of the fixed shaft;

[0032] The spray head has a first channel formed inside, and the rotating part has a second channel formed inside.

[0033] The spray head also has a third channel formed inside, connecting the first channel and the second channel;

[0034] The third atomizing nozzle is connected to the first channel, and the first atomizing nozzle is connected to the second channel.

[0035] Furthermore, the upper part of the sedimentation section is provided with a water outlet pipe, the top of the tower body is provided with a water inlet pipe, and the water outlet pipe is connected to the water inlet pipe;

[0036] The outlet pipe is equipped with a pump body and a first control valve, and the inlet pipe is equipped with a second control valve. The first control valve and the second control valve are used to control the wastewater flow rate.

[0037] The pump body is used to transport water from the outlet pipe to the inlet pipe.

[0038] Compared with the prior art, this utility model has the following advantages:

[0039] The chemical wastewater purification device of this utility model features an air flotation section at the top of the tower. Through the arrangement of a first and second tank, separate air flotation treatment is performed to remove grease and large particulate matter from the wastewater. The wastewater after air flotation treatment is then electrolyzed by an electrolysis unit. A rotating component is installed above the electrolysis unit, and a second atomizing nozzle is located at the outlet of the first tank. The rotating component agitates the atomized wastewater spray, creating a rotating airflow that slows the downward flow velocity of the spray and improves the uniformity of the spray. Simultaneously, a movable part that reciprocates along the height of the tower is provided, equipped with a first atomizing nozzle for spraying wastewater. The combination of the horizontal spray from the first atomizing nozzle and the vertical spray from the second atomizing nozzle improves the uniformity and integrity of the spray, avoiding the defects of low electrolysis efficiency caused by partial non-contact with wastewater on the anode and cathode plates, and the defects of accelerated local oxidation due to excessive local contact with wastewater, leading to a short anode lifespan. Attached Figure Description

[0040] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0041] Figure 1 This is a schematic diagram of the main structure of the chemical wastewater purification device described in this embodiment of the utility model;

[0042] Figure 2 This is a top view of the chemical wastewater purification device described in an embodiment of the present invention.

[0043] Figure 3 This is a cross-sectional schematic diagram of the rotating component described in an embodiment of the present utility model;

[0044] Figure 4 This is a top view of the rotating component described in an embodiment of the present utility model;

[0045] Figure 5 This is a cross-sectional schematic diagram of the diversion box body described in an embodiment of the present utility model;

[0046] Figure 6 This is a cross-sectional view of the connection between the fixed part and the movable part in the spray assembly described in this embodiment of the utility model;

[0047] Figure 7 This is a side view of the connection between the fixed part and the movable part according to an embodiment of the present utility model;

[0048] Figure 8 for Figure 7 A magnified view of a section at point I.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Tower body; 2. Spray assembly; 3. First chamber; 4. Second chamber; 5. Electrolysis assembly; 6. Rotating assembly; 7. Third atomizing nozzle; 8. Water outlet pipe; 9. Water inlet pipe; 10. Pump body; 11. First control valve; 12. Second control valve;

[0051] 101. Flotation section; 102. Electrolysis section; 103. Sedimentation section;

[0052] 201. Fixing part; 202. First atomizing nozzle; 203. Second atomizing nozzle; 204. Sliding seat; 205. Second drive part; 206. Gear set; 207. Movable shaft; 208. Connecting seat; 209. Fixed shaft; 210. Spray head; 211. Third drive part; 212. Rotating frame; 213. Second bevel gear; 214. First bevel gear; 215. Rotating component; 216. Water pipe; 217. First channel; 218. Second channel; 219. Third channel;

[0053] 301. Diverter box;

[0054] 601. First drive unit; 602. Rotating plate;

[0055] 2011, Fixing plate; 2012, Rack;

[0056] 3011. Upper box body; 3012. Conical box body;

[0057] 6021, Straight bar; 6022, Curved plate; 6023, Rib plate. Detailed Implementation

[0058] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0059] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0061] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0062] This embodiment relates to a chemical wastewater purification device, which, as a whole, is as follows: Figure 1 and Figure 2 As shown, the chemical wastewater purification device includes a tower body 1 with a cavity and a spray assembly 2 disposed within the tower body 1. The cavity is configured from top to bottom as a flotation section 101, an electrolysis section 102, and a sedimentation section 103. The flotation section 101 is equipped with a first housing 3, and the electrolysis section 102 is equipped with a second housing 4. The outlet end of the first housing 3 is located within the second housing 4. An electrolysis assembly 5 is connected within the second housing 4, and the electrolysis assembly 5 includes alternating cathode plates and anode plates.

[0063] The spray assembly 2 includes a fixed part 201 fixed to the tower body 1 and a movable part that reciprocates along the height direction of the tower body 1. The movable part is provided with a first atomizing nozzle 202 that rotates along the fixed part 201. The outlet end of the first housing 3 is provided with a plurality of second atomizing nozzles 203. A rotating assembly 6 is also provided above the electrolysis assembly 5. The rotating assembly 6 includes a first driving part 601 and a rotating plate 602 connected to the power output end of the first driving part 601. The rotating plate 602 is located below the second atomizing nozzles 203.

[0064] The chemical wastewater purification device of this embodiment, by setting an air flotation section 101 at the upper part of the tower body 1, and by setting up a first tank 3 and a second tank 4, firstly performs separate air flotation treatment to remove grease and large particulate matter from the wastewater, and then electrolyzes the wastewater after air flotation treatment through an electrolysis component 5. A rotating component 6 is set above the electrolysis component 5, and a second atomizing nozzle 203 is provided at the outlet end of the first tank 3. The rotating component 6 agitates the atomized wastewater spray to form a certain rotating airflow, slowing down the downward flow speed of the spray and improving the uniformity of spraying. At the same time, by setting up a movable part that moves back and forth along the height direction of the tower body 1, a first atomizing nozzle 202 for spraying wastewater is provided on the movable part. The combination of the horizontal spraying of the first atomizing nozzle 202 and the vertical spraying of the second atomizing nozzle 203 improves the uniformity and integrity of spraying, avoiding the defects of low electrolysis efficiency caused by the anode plate and cathode plate not being in contact with wastewater, and the defects of local oxidation acceleration caused by excessive local contact with wastewater, resulting in a short service life of the anode.

[0065] Based on the above overall introduction, the chemical wastewater purification device in this embodiment is mostly used in the pretreatment stage of chemical wastewater treatment. After electrolysis removes organic matter that is difficult to biodegrade, intermediate and advanced treatments are carried out. In practical applications, the wastewater entering tower 1 needs to be filtered through a preliminary screen to remove larger particles and solid particles in the wastewater, and after sedimentation, the supernatant is taken to obtain the wastewater entering tower 1.

[0066] The chemical wastewater purification device in this embodiment can also be used in the advanced treatment stage after the intermediate treatment stage to remove trace organic matter and heavy metals from the water.

[0067] As an exemplary structure in this embodiment, this is as follows Figures 1 to 2 As shown, the bottom of the first housing 3 is provided with several diversion boxes 301, which are positioned directly above the rotating plate 602. Several second atomizing nozzles 203 are positioned at the bottom of the diversion boxes 301.

[0068] Furthermore, such as Figures 3 to 4 As shown, the rotating plate 602 includes an arc-shaped plate 6022 disposed on a straight rod 6021, and a rotating shaft connected to the power output end of the first drive unit 601. The straight rod 6021 is sleeved on the rotating shaft. The arc-shaped plate 6022 extends from the end of the straight rod 6021 along its rotation axis, and the thickness of the arc-shaped plate 6022 gradually increases from the edge along the rotation axis. By setting the arc-shaped plate 6022, it is easier to form a swirling airflow during rotation, further slowing down the spray falling speed and increasing the uniformity of the spray.

[0069] Preferably, as Figures 3 to 4As shown, the upper surface of the arc-shaped plate 6022 is also provided with an upwardly protruding stiffener 6023, which extends along the length of the straight rod 6021. By providing the stiffener 6023, the strength of the arc-shaped plate 6022 can be increased, and the direction of airflow rotation can be improved during rotation, which facilitates the formation of rotating airflow.

[0070] In addition, such as Figure 5 As shown, the diversion box 301 includes an upper box 3011 connected to the bottom wall of the first box 3, and a conical box 3012 connected to the lower part of the upper box 3011. A water channel communicating with the upper box 3011 is formed inside the first box 3, and the conical box 3012 and the interior of the upper box 3011 form a water storage cavity. A plurality of second atomizing nozzles 203 are disposed on the conical box 3012.

[0071] As a preferred embodiment, such as Figure 1 , Figure 6 , Figure 7 As shown, the fixed part 201 includes a fixed plate 2011 and a rack 2012 extending along the fixed plate 2011. The movable part includes a sliding seat 204 slidably connected to the rack 2012, a second drive part 205 connected to the sliding seat 204, a gear set 206 connected to the power output end of the second drive part 205, and a movable shaft 207 connected to the sliding seat 204. The second drive part 205 drives the gear set 206 to mesh with the rack 2012, and the movable shaft 207 reciprocates along the height direction of the tower body 1.

[0072] The second drive unit 205 employs a servo motor, and its power output end is connected to a drive gear. The sliding base is formed into a hollow shell structure. Two pins are connected to the sliding base 204, and driven gears are connected to each pin. The drive gear meshes with the two driven gears for transmission. Furthermore, a transmission gear is connected to each pin, and the rack 2012 has double-sided teeth. The two transmission gears mesh on both sides of the rack 2012. This configuration improves the smoothness of the movement of the moving part.

[0073] Furthermore, such as Figure 7 and Figure 8 As shown, a connecting seat 208 is provided between the sliding seat 204 and the movable shaft 207. A fixed shaft 209 is also connected to the connecting seat 208. The movable shaft 207 is sleeved on the outside of the fixed shaft 209. A spray head 210 is connected to the lower end of the fixed shaft 209. A third atomizing nozzle 7 is connected to the spray head 210.

[0074] Still Figure 7 and Figure 8As shown, a third drive unit 211 is provided on the connecting seat 208. The third drive unit 211 is connected to the movable shaft 207 via chain drive or gear drive. A rotating frame 212 is connected to the lower part of the movable shaft 207, and a second bevel gear 213 is provided inside the rotating frame 212. A first bevel gear 214 is connected to the lower end of the fixed shaft 209. The second bevel gear 213 meshes with the first bevel gear 214 for transmission. The first bevel gear 214 is located on the upper part of the spray head 210. A rotating part 215 is provided on the second bevel gear 213, and several first atomizing nozzles 202 are connected to the rotating part 215. When the third drive unit 211 drives the movable shaft 207 to rotate, the second bevel gear 213 rotates relative to the first bevel gear 214.

[0075] In this embodiment, the third drive unit 211 adopts a servo motor. The third drive unit 211 drives the movable shaft 207 to rotate, and the rotating shaft drives the rotating frame 212 to rotate. Since the first bevel gear 214 is fixed on the connecting seat 208, when the rotating frame 212 rotates, the second bevel gear 213 rotates in the horizontal direction along the axis of the first bevel gear 214, while the rotating component 215 rotates in the vertical direction through the meshing of the second bevel gear 213 and the first bevel gear 214, thereby increasing the spray range of the first atomizing nozzle 202.

[0076] like Figure 1 As shown, this embodiment provides two spray components 2. In other embodiments, multiple spray components can be arranged radially along the tower body 1 to further increase the uniformity of spraying wastewater. In this embodiment, one spray component 2 is located at the upper part and the other spray component 2 is located at the lower part. Due to the function of the second drive unit 205, the height can be arbitrarily adjusted, which facilitates the improvement of electrolysis effect and effectively enhances the electrolytic treatment of organic matter.

[0077] It should be noted that, because the wastewater is electrolyzed using a spray method, gas is generated on both the cathode and anode plates during the electrolysis process. This gas not only carries solid particles, preventing local scaling and clogging of the electrolysis plates, but also increases the electrolysis efficiency and improves the wastewater treatment effect.

[0078] In addition, such as Figures 6 to 8 As shown, a water supply pipe 216 is provided inside the fixed shaft 209, extending axially along the fixed shaft 209. A first channel 217 is formed inside the spray head 210, and a second channel 218 is formed inside the rotating component 215. A third channel 219 connecting the first channel 217 and the second channel 218 is also formed inside the spray head 210. The third atomizing nozzle 7 communicates with the first channel 217, and the first atomizing nozzle 202 communicates with the second channel 218.

[0079] In addition, an outlet pipe 8 is provided at the upper part of the sedimentation section 103, and an inlet pipe 9 is provided at the top of the tower body 1. The outlet pipe 8 is connected to the inlet pipe 9. A pump body 10 and a first control valve 11 are provided on the outlet pipe 8, and a second control valve 12 is provided on the inlet pipe 9. The first control valve 11 and the second control valve 12 are used to control the sewage flow rate. The pump body 10 is used to transport water from the outlet pipe 8 to the inlet pipe 9. By setting up the main body and the outlet pipe 8, the water after electrolysis is mixed again before entering the wastewater, reducing the concentration of organic matter during the electrolysis process and avoiding severe oxidation of the anode plate.

[0080] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chemical wastewater purification device, characterized in that: it comprises a tower body (1) with a cavity, and a spraying assembly (2) arranged in the tower body (1); the cavity is sequentially arranged from top to bottom as a flotation section (101), an electrolysis section (102), and a sedimentation section (103); the flotation section (101) is provided with a first box body (3), the electrolysis section (102) is provided with a second box body (4), and the outlet end of the first box body (3) is arranged in the second box body (4); an electrolysis assembly (5) is connected in the second box body (4), and the electrolysis assembly (5) comprises cathode plates and anode plates arranged alternately; the spraying assembly (2) comprises a fixed part (201) fixed on the tower body (1), and a movable part reciprocally moving along the height direction of the tower body (1), wherein the movable part is provided with a first atomizing nozzle (202) rotating along the fixed part (201), and the outlet end of the first box body (3) is provided with a plurality of second atomizing nozzles (203); a rotating assembly (6) is further arranged above the electrolysis assembly (5), and the rotating assembly (6) comprises a first driving part (601), and a rotating plate (602) connected to the power output end of the first driving part (601), wherein the rotating plate (602) is arranged below the second atomizing nozzles (203).

2. The chemical wastewater purification device according to claim 1, characterized in that: the bottom of the first box body (3) is provided with a plurality of shunt box bodies (301), and the shunt box bodies (301) are arranged directly above the rotating plate (602); and the plurality of second atomizing nozzles (203) are arranged at the bottom of the shunt box bodies (301).

3. The chemical wastewater purification device according to claim 2, characterized in that: the rotating plate (602) comprises a straight rod (6021), and an arc-shaped plate (6022) arranged on the straight rod (6021); the power output end of the first driving part (601) is connected with a rotating shaft, and the straight rod (6021) is sleeved on the rotating shaft; the arc-shaped plate (6022) extends from the rotating shaft to the end of the straight rod (6021), and the thickness of the arc-shaped plate (6022) gradually increases from the rotating shaft to the edge.

4. The chemical wastewater purification device according to claim 3, characterized in that: the upper surface of the arc-shaped plate (6022) is further provided with a rib plate (6023) protruding upward, and the rib plate (6023) extends along the length direction of the straight rod (6021).

5. The chemical wastewater purification device according to claim 2, characterized in that: the shunt box body (301) comprises an upper box body (3011) connected to the bottom wall of the first box body (3), and a tapered box body (3012) connected to the lower part of the upper box body (3011); a water flow channel is formed in the first box body (3) and communicates with the upper box body (3011), and a water storage cavity is formed between the tapered box body (3012) and the upper box body (3011). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A plurality of the second atomizing nozzles (203) are arranged on the conical box body (3012). 6.The chemical wastewater purification device according to claim 1, characterized in that: The fixed part (201) comprises a fixed plate (2011) and a rack (2012) arranged along the extension direction of the fixed plate (2011); The movable part comprises a sliding seat (204) slidably connected to the rack (2012), a second driving part (205) connected to the sliding seat (204), a gear set (206) connected to the power output end of the second driving part (205), and a movable shaft (207) connected to the sliding seat (204); The second driving part (205) drives the gear set (206) to mesh with the rack (2012) for transmission, and the movable shaft (207) reciprocates along the height direction of the tower body (1). 7.The chemical wastewater purification device according to claim 6, characterized in that: A connecting seat (208) is arranged between the sliding seat (204) and the movable shaft (207); A fixed shaft (209) is further connected to the connecting seat (208), the movable shaft (207) is sleeved outside the fixed shaft (209), the lower end of the fixed shaft (209) is connected with a spray head (210), and the spray head (210) is connected with a third atomizing nozzle (7). 8.The chemical wastewater purification device according to claim 7, characterized in that: A third driving part (211) is arranged on the connecting seat (208), the third driving part (211) is connected with the movable shaft (207) through chain transmission or gear transmission, the lower part of the movable shaft (207) is connected with a rotating frame (212), and the rotating frame (212) is internally provided with a second bevel gear (213); The lower end of the fixed shaft (209) is connected with a first bevel gear (214), the second bevel gear (213) meshes with the first bevel gear (214) for transmission, and the first bevel gear (214) is arranged on the upper part of the spray head (210); A rotating member (215) is arranged on the second bevel gear (213), and a plurality of first atomizing nozzles (202) are connected to the rotating member (215); When the third driving part (211) drives the movable shaft (207) to rotate, the second bevel gear (213) rotates relative to the first bevel gear (214). 9.The chemical wastewater purification device according to claim 8, characterized in that: A water delivery pipe (216) is arranged in the fixed shaft (209) and extends along the axial direction of the fixed shaft (209); A first channel (217) is formed in the spray head (210), and a second channel (218) is formed in the rotating member (215); A third channel (219) connecting the first channel (217) and the second channel (218) is further formed in the spray head (210); The third atomizing nozzle (7) is communicated with the first channel (217), and the first atomizing nozzle (202) is communicated with the second channel (218).

10. The chemical wastewater purification device according to claim 1, characterized in that: The upper part of the precipitation section (103) is provided with a water outlet pipeline (8), the top of the tower body (1) is provided with a water inlet pipeline (9), and the water outlet pipeline (8) is communicated to the water inlet pipeline (9); A pump body (10) and a first control valve (11) are arranged on the water outlet pipeline (8), a second control valve (12) is arranged on the water inlet pipeline (9), and the first control valve (11) and the second control valve (12) are used to control the wastewater flow; The pump body (10) is used to deliver the water outlet pipeline (8) to the water inlet pipeline (9).

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