Electroplating heavy metal wastewater zero discharge recycling treatment device

Abstract

The application discloses a kind of electroplating heavy metal wastewater zero discharge reuse processing device, it is related to electroplating heavy metal wastewater treatment technical field, including base, the top side of base is fixedly installed with processing box, and the top of processing box is provided with neutralization tank, and the side of processing box is provided with dehydration tank, further including: dehydration component, setting inside and top of dehydration tank, dehydration component includes fixed frame, rotating component, setting inside and top of neutralization tank, fixed frame, fixedly installed in the top side of dehydration tank, the top of fixed frame is fixedly installed with rotating motor, and the output end of rotating motor passes through fixed frame and is fixedly installed with rotating shaft, and the bottom end of rotating shaft is fixedly installed with crossbar;So that when electroplating heavy metal wastewater is treated, wastewater can be neutralized first, and it is convenient to separate the precipitated sludge generated by neutralization and moisture, facilitate the dewatering of sludge, facilitate the export of sludge, improve practicality.

Description

Technical Field

[0001] This invention relates to the field of electroplating heavy metal wastewater treatment technology, specifically to a zero-discharge reuse treatment device for electroplating heavy metal wastewater. Background Technology

[0002] When treating and purifying acidic heavy metal wastewater, electroplating wastewater contains a large number of heavy metal ions (such as...). , , , Direct discharge of heavy metal ions (such as lime or sodium hydroxide) will pollute the environment. By adding alkaline substances such as lime or sodium hydroxide to raise the pH value, heavy metal ions can form insoluble hydroxides or carbonates as precipitates, thus separating them from the water. Subsequent treatment can reduce precipitation, reduce sludge formation, and reduce pollution.

[0003] For example, the electroplating heavy metal wastewater zero-discharge reuse treatment device and method disclosed in CN118420014A can efficiently filter wastewater and simultaneously achieve automatic cleaning of the filter screen inside the treatment cylinder and air pressure assisted filtration, improving treatment efficiency and quality, ensuring zero discharge and reuse of wastewater, and contributing to resource recycling, with significant environmental and economic benefits. However, in actual use, during the neutralization process of acidic heavy metal wastewater, certain precipitation will occur after neutralization, making it difficult to remove the precipitated sludge from the wastewater. Moreover, after the precipitated sludge is separated from the wastewater, it is not easy to dewater the sludge. If the sludge is not dewatered, the water content of the heavy metal hydroxides in the sludge is high and the volume is large, making it inconvenient for subsequent transportation or treatment. In addition, the sludge contains some wastewater, and if it is not dewatered, it is easy for the wastewater to be discharged without treatment, thus causing pollution, which has certain defects in use.

[0004] Therefore, we propose a zero-discharge reuse treatment device for electroplating heavy metal wastewater to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a zero-discharge reuse treatment device for electroplating heavy metal wastewater to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a zero-discharge reuse treatment device for electroplating heavy metal wastewater, comprising a base, a treatment box fixedly installed on one side of the top of the base, a neutralization box above the treatment box, and a dehydration box on one side of the treatment box;

[0007] Also includes:

[0008] A dehydration assembly is located inside and at the top of the dehydration chamber, and the dehydration assembly includes a mounting frame;

[0009] Rotating components are located inside and at the top of the neutralization chamber;

[0010] A fixed frame is fixedly installed on the top side of the dehydration tank. A rotating motor is fixedly installed on the top of the fixed frame, and the output end of the rotating motor passes through the fixed frame and is fixedly installed with a rotating shaft. A cross is fixedly installed at the bottom end of the rotating shaft, and a dehydration hopper is fixedly installed on the outside of the cross.

[0011] A limiting ring is fixedly installed inside the upper part of the dehydration tank. A rotating ring is slidably connected to the inner side of the limiting ring, and the rotating ring is fixedly connected to the dehydration bucket. A turntable is fixedly installed on the outside of the rotating shaft above the dehydration tank. Meanwhile, a movable rod is slidably connected to the inside of the fixed frame, and an arc-shaped block is fixedly installed at one end of the movable rod. A T-shaped ring groove is opened on the outside of the turntable, and the arc-shaped block is slidably connected to the T-shaped ring groove.

[0012] Preferably, several columns are fixedly installed on the top of the base, and the tops of the columns are fixedly connected to the dewatering tank. Several uprights are symmetrically installed on the top of the processing tank, and the tops of the uprights are fixedly connected to the neutralization tank. A feeding hopper is connected through one side of the top of the neutralization tank, and a water inlet pipe is connected through the upper side of one side of the neutralization tank. A connecting pipe is connected through the lower side of the other side of the neutralization tank, and a control valve is provided on the outer side of the connecting pipe. A drain pipe is connected through one side of the bottom of the dewatering tank, and the end of the drain pipe away from the dewatering tank is connected through the processing tank. A processing membrane is fixedly installed inside the processing tank. A feeding pipe is connected through the upper side of one side of the processing tank, and a discharge pipe is connected through the lower side of one side of the processing tank below the feeding pipe. A water outlet pipe is connected through the lower side of one side of the processing tank, and valves are provided on the outer side of both the discharge pipe and the water outlet pipe.

[0013] By adopting the above technical solution, the wastewater can be neutralized before it is treated.

[0014] Preferably, a cylinder is fixedly installed on one side of the top of the dehydration tank, and the movable rod is slidably connected to the cylinder. A piston is slidably connected inside the cylinder, and the piston is fixedly connected to the movable rod. An air inlet is provided through one side of the top of the cylinder, and an air inlet pipe is connected through one side of the cylinder. Both the air inlet and the air inlet pipe are equipped with one-way valves. An exhaust pipe is connected through the top of one side of the dehydration tank.

[0015] By adopting the above technical solution, the sludge adhering to the inner wall of the dewatering hopper can be blown off.

[0016] Preferably, an annular pipe is fixedly installed at the top of the inside of the dehydration tank, and the end of the air inlet pipe away from the cylinder passes through the dehydration tank and is connected to the annular pipe. Two sets of air blowing pipes are symmetrically connected to the bottom of the annular pipe. At the same time, a mud discharge pipe is connected to the bottom of the dehydration hopper. The mud discharge pipe is rotatably connected to the dehydration tank, and a solenoid valve is installed at the top inside the mud discharge pipe.

[0017] By adopting the above technical solution, the sludge can be collected at the bottom of the dewatering hopper.

[0018] Preferably, the rotating assembly includes a mounting bracket fixedly installed on the top of the neutralization tank, and a drive motor is fixedly installed on the top of the mounting bracket. The output end of the drive motor passes through the mounting bracket and is fixedly installed with a stirring shaft. The stirring shaft is rotatably connected to the neutralization tank and the processing tank. Furthermore, a plurality of first stirring rods and a plurality of second stirring rods are symmetrically installed on the outside of the stirring shaft inside the neutralization tank and the processing tank, respectively.

[0019] By adopting the above technical solution, wastewater can be stirred.

[0020] Preferably, a first bevel gear is fixedly installed on the outside of the stirring shaft above the neutralization box, and a rotating rod is rotatably connected to the inside of the mounting frame. A second bevel gear is fixedly installed at one end of the rotating rod, and the second bevel gear meshes with the first bevel gear. A support frame is fixedly installed on the outside of the rotating rod, and the support frame is fixedly connected to the neutralization box. A rotating rod is fixedly installed at the other end of the rotating rod.

[0021] By adopting the above technical solution, the rotation of the stirring shaft can drive the rotation rod to rotate.

[0022] Preferably, a column is fixedly installed below one side of the rotating rod, and a movable frame is slidably connected to the outside of the column. A conduit is fixedly installed at the bottom of the movable frame and slidably connected to the neutralization box. A pH probe is fixedly installed at the bottom of the conduit, and a positioning block is slidably connected to the outside of the conduit. The positioning block is fixedly connected to the neutralization box, and a pH meter is fixedly installed above the connecting pipe on the outside of the neutralization box.

[0023] By adopting the above technical solution, the pH value in wastewater can be accurately monitored.

[0024] Preferably, an L-shaped rod is fixedly installed on the outside of the conduit above the positioning block, and a push block is fixedly installed on one side of the L-shaped rod. An annular hopper is provided above the interior of the neutralization box, and fixing rods are symmetrically installed on the inner side of the annular hopper. Both fixing rods are fixedly connected to the stirring shaft, and a feeding chute is symmetrically opened through the interior of the annular hopper.

[0025] By adopting the above technical solution, alkaline materials can be added evenly.

[0026] Preferably, two sets of mounting rods are symmetrically installed on the outer side of the annular bucket, and a movable frame is slidably connected to the lower outer side of each set of mounting rods. An mounting ring is fixedly installed on the top of each set of movable frames, and an arc-shaped rod is symmetrically installed on the top of the mounting ring, and the arc-shaped rod is inserted into the feeding chute.

[0027] By adopting the above technical solution, the upward movement of the arc-shaped rod can close the material discharge chute.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the zero-discharge reuse treatment device for electroplating heavy metal wastewater allows the wastewater to be neutralized first when treating electroplating heavy metal wastewater, and facilitates the separation of the precipitated sludge and water generated by neutralization, making it easier to dewater the sludge and export the sludge, thus improving its practicality.

[0029] 1. During wastewater treatment, wastewater is introduced into the neutralization tank through the inlet pipe. Then, lime or sodium hydroxide is added to the neutralization tank via the feeding hopper, causing sedimentation. Afterward, the control valve on the connecting pipe is opened, allowing the wastewater and sludge to enter the dewatering tank through the connecting pipe. The wastewater then enters the dewatering hopper, which is made of porous ceramic material. The wastewater passes through the dewatering hopper, while the sludge remains in it. After the sludge has settled in the dewatering hopper, the rotating motor is started, driving the rotating shaft to rotate. This allows the dewatering hopper to rotate via a crossbeam, allowing the sludge to... Centrifugal force enables dehydration. During rotation, the rotating shaft drives the turntable to rotate at an offset, which in turn drives the movable rod to reciprocate via the connection between the T-shaped annular groove and the arc-shaped block. This causes the piston to reciprocate within the cylinder. When the piston moves to the left within the cylinder, the one-way valve inside the air inlet closes and the one-way valve inside the air inlet pipe opens, allowing air from inside the cylinder to enter the annular pipe through the air inlet pipe. When the piston moves to the right, the one-way valve inside the air inlet opens and the one-way valve inside the air inlet pipe closes, allowing air to be drawn into the cylinder. Therefore, during sludge dewatering, the air blowing pipe at the bottom of the annular pipe continuously blows air onto the inside of the dewatering hopper. Under centrifugal force, the sludge adheres to the inside of the dewatering hopper, and the airflow causes the sludge to accumulate at the bottom inside the hopper. The rotation of the dewatering hopper, although the air blowing range is fixed, allows for thorough blowing off of the sludge adhering to the inner wall of the hopper, preventing sludge from sticking to the inner wall. After dewatering is complete, the solenoid valve on the sludge discharge pipe can be opened, allowing the sludge to pass through the discharge pipe. Wastewater is discharged through a drain pipe into a treatment tank. Flocculant is added through a feeding pipe to flocculate harmful substances in the wastewater. After treatment, the water passes through a treatment membrane. After wastewater treatment, the valve on the discharge pipe can be opened to discharge the sediment. The valve at the top of the outlet pipe can be opened to drain the water. This allows for the initial neutralization of wastewater when treating electroplating heavy metal wastewater, facilitating the separation of the precipitated sludge from the water, and making it easier to dewater and discharge the sludge, thus improving its practicality.

[0030] 2. During wastewater neutralization, the drive motor can be started to rotate the stirring shaft. The rotation of the stirring shaft then drives the first and second stirring rods to rotate. This assists in the neutralization and treatment of wastewater during continuous processing. During the rotation of the stirring shaft, the meshing of the first and second bevel gears drives the rotating rod to rotate. The rotating rod then drives the column rod on the rotating rod to rotate in a circular motion. The column rod, through a sliding connection with the movable frame, drives the movable frame to move up and down, causing the conduit to move back and forth. The conduit drives the pH probe to move back and forth. The connection wire between the pH probe and the pH meter is threaded through the conduit, allowing the pH probe to move back and forth in the wastewater. This expands the pH probe's monitoring range, avoids a fixed pH probe position, and prevents sediment from constantly floating near the pH probe (during neutralization, sediment may produce carbon dioxide, hydrogen sulfide, etc. due to anaerobic reactions (such as organic matter decomposition), lowering the local pH value). This avoids affecting the accuracy of pH monitoring and improves practicality.

[0031] 3. During wastewater neutralization, materials are fed through a feeding hopper, which then falls into the annular hopper. Alkaline materials can be fed through a discharge chute. The rotating agitator shaft drives the annular hopper to rotate, changing the material's position. The reciprocating movement of the conduit moves the push block on the L-shaped rod, allowing it to engage with the mounting ring. The push block then moves upwards, causing the mounting ring to rotate. When the push block reaches its highest point, it inserts two arc-shaped rods on the mounting ring into the discharge chute, pausing the material's fall. The push block then moves downwards, causing the arc-shaped rods to disengage under gravity. The feeding trough allows for continued material feeding, and the rotating annular hopper alters the feeding position during this process, ensuring more even distribution of alkaline materials within the neutralization tank. This prevents all material from falling into the annular hopper, which would affect the uniformity of the feeding. Furthermore, the triangular tops of the two arc-shaped rods allow for more dispersed material distribution in the wastewater. The pH value of the wastewater is determined using a pH meter, and feeding is stopped once the required pH level is reached. This improves the uniformity of the feeding, reduces stirring time, increases reaction efficiency, minimizes the possibility of localized pH inconsistencies, and further enhances the accuracy of pH probe monitoring. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the cross-sectional structure of the dehydration tank of the present invention;

[0035] Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle;

[0036] Figure 5 This is a schematic diagram of the cross-sectional structure of the cylindrical body of the present invention;

[0037] Figure 6 This is a schematic diagram of the cross-sectional structure of the neutralization box in this invention;

[0038] Figure 7 For the present invention Figure 6 Enlarged structural diagram of region B in the middle;

[0039] Figure 8 For the present invention Figure 6 Enlarged structural diagram of region C in the middle;

[0040] Figure 9 This is a partial structural diagram of the rotating component of the present invention.

[0041] In the diagram: 1. Base; 101. Processing box; 102. Upright pole; 103. Neutralization box; 104. Column; 105. Dewatering box; 106. Water inlet pipe; 107. Feed hopper; 108. Connecting pipe; 109. Drain pipe; 110. Feeding pipe; 111. Processing membrane; 112. Discharge pipe; 113. Water outlet pipe; 2. Dewatering assembly; 201. Fixing frame; 202. Sludge discharge pipe; 203. Rotating motor; 204. Rotating shaft; 205. Cross; 206. Dewatering hopper; 207. Limiting ring; 208. Rotating ring; 209. Solenoid valve; 210. Turntable; 211. Movable rod; 212. Arc block; 213. T-shaped ring groove; 214. Cylinder; 215. Air inlet pipe; 216. Piston; 21 7. Air inlet; 218. Annular pipe; 219. Air blowing pipe; 220. Exhaust pipe; 3. Rotating assembly; 301. Mounting bracket; 302. Drive motor; 303. Stirring shaft; 304. First stirring rod; 305. Second stirring rod; 306. First bevel gear; 307. Second bevel gear; 308. Rotating rod; 309. Support frame; 310. Rotating rod; 311. Column rod; 312. Movable frame; 313. Conduit; 314. pH meter; 315. Positioning block; 316. pH probe; 317. L-shaped rod; 318. Push block; 319. Annular hopper; 3191. Fixed rod; 320. Discharge trough; 321. Mounting rod; 322. Movable frame; 323. Mounting ring; 324. Arc rod. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-9 The present invention provides a technical solution: a zero-discharge reuse treatment device for electroplating heavy metal wastewater, including a base 1, a treatment box 101 fixedly installed on one side of the top of the base 1, a neutralization box 103 arranged above the treatment box 101, and a dehydration box 105 arranged on one side of the treatment box 101.

[0044] Also includes:

[0045] Dehydration assembly 2 is disposed inside and on top of dehydration tank 105, and dehydration assembly 2 includes a fixing frame 201;

[0046] A fixed frame 201 is fixedly installed on the top side of the dehydration tank 105. A rotating motor 203 is fixedly installed on the top of the fixed frame 201, and the output end of the rotating motor 203 passes through the fixed frame 201 and is fixedly installed with a rotating shaft 204. A cross 205 is fixedly installed at the bottom end of the rotating shaft 204, and a dehydration bucket 206 is fixedly installed on the outside of the cross 205.

[0047] A limiting ring 207 is fixedly installed inside the upper part of the dehydration tank 105. A rotating ring 208 is slidably connected to the inner side of the limiting ring 207, and the rotating ring 208 is fixedly connected to the dehydration hopper 206. A turntable 210 is fixedly installed on the outside of the rotating shaft 204 above the dehydration tank 105. Meanwhile, a movable rod 211 is slidably connected to one side of the inner side of the fixing frame 201, and an arc-shaped block 212 is fixedly installed at one end of the movable rod 211. A T-shaped ring groove 213 is opened on the outside of the turntable 210, and the arc-shaped block 212 is slidably connected to the T-shaped ring groove 213.

[0048] Several columns 104 are fixedly installed on the other side of the top of the base 1, and the tops of the columns 104 are fixedly connected to the dewatering tank 105. Several uprights 102 are symmetrically installed on the top of the processing tank 101, and the tops of the uprights 102 are fixedly connected to the neutralization tank 103. A feeding hopper 107 is connected through one side of the top of the neutralization tank 103, and a water inlet pipe 106 is connected through the upper side of one side of the neutralization tank 103. A connecting pipe 108 is connected through the lower side of the other side of the neutralization tank 103, and a [missing information - likely a device or material] is provided on the outer side of the connecting pipe 108. The control valve is provided, and a drain pipe 109 is connected through one side of the bottom of the dehydration tank 105. The end of the drain pipe 109 away from the dehydration tank 105 is connected through the treatment tank 101. A treatment membrane 111 is fixedly installed inside the treatment tank 101. A feeding pipe 110 is connected through the upper side of one side of the treatment tank 101. A discharge pipe 112 is connected through the lower side of one side of the treatment tank 101 below the feeding pipe 110. A water outlet pipe 113 is connected through the lower side of one side of the treatment tank 101. Valves are provided on the outer side of both the discharge pipe 112 and the water outlet pipe 113.

[0049] A cylinder 214 is fixedly installed on one side of the top of the dehydration tank 105, and a movable rod 211 is slidably connected to the cylinder 214. A piston 216 is slidably connected inside the cylinder 214, and the piston 216 is fixedly connected to the movable rod 211. An air inlet 217 is opened through one side of the top of the cylinder 214, and an air inlet pipe 215 is connected through one side of the cylinder 214. A one-way valve is installed inside both the air inlet 217 and the air inlet pipe 215. An exhaust pipe 220 is connected through the upper side of one side of the dehydration tank 105.

[0050] An annular pipe 218 is fixedly installed at the top of the inside of the dehydration tank 105. The end of the air inlet pipe 215 away from the cylinder 214 passes through the dehydration tank 105 and is connected to the annular pipe 218. Two sets of air blowing pipes 219 are symmetrically connected to the bottom of the annular pipe 218. At the same time, a mud discharge pipe 202 is connected to the bottom of the dehydration hopper 206. The mud discharge pipe 202 is rotatably connected to the dehydration tank 105. A solenoid valve 209 is installed inside the upper part of the mud discharge pipe 202.

[0051] Example 1: As Figures 1-5As shown, during wastewater treatment, wastewater is introduced into neutralization tank 103 through inlet pipe 106. Then, lime or sodium hydroxide is added to neutralization tank 103 through feeding hopper 107, causing sedimentation in the wastewater. Afterwards, the control valve on connecting pipe 108 is opened, allowing wastewater and sludge to enter dewatering tank 105 through connecting pipe 108. Wastewater can then enter dewatering hopper 206, which is made of porous ceramic material. Wastewater passes through dewatering hopper 206, while sludge remains in dewatering hopper 206. After the sludge has settled in dewatering hopper 206, the rotating motor 203 is started, driving rotating shaft 204 to rotate, which in turn drives the dewatering hopper through crossbar 205. Rotation 206 causes the sludge to undergo dewatering under centrifugal force. During rotation, the rotating shaft 204 drives the turntable 210 to rotate at an offset, which in turn drives the movable rod 211 to reciprocate through the connection between the T-shaped annular groove 213 and the arc-shaped block 212. This causes the piston 216 to reciprocate within the cylinder 214. When the piston 216 moves to the left within the cylinder 214, the one-way valve inside the air inlet 217 closes and the one-way valve inside the air inlet pipe 215 opens, allowing air from inside the cylinder 214 to enter the annular pipe 218 through the air inlet pipe 215. Then, when the piston 216 moves to the right, the one-way valve inside the air inlet 217 opens and the air inlet pipe 218 opens. 5. The internal one-way valve is closed, allowing air to be drawn into the cylinder 214. During sludge dewatering, the air blowing pipe 219 at the bottom of the annular pipe 218 continuously blows air onto the inside of the dewatering hopper 206. Under centrifugal force, the sludge adheres to the inside of the dewatering hopper 206, and the airflow causes it to accumulate at the bottom inner side of the hopper. The rotation of the dewatering hopper 206, while maintaining a fixed air blowing range, effectively blows off the sludge adhering to its inner wall, preventing further sludge buildup. After dewatering is complete, the sludge discharge pipe 202 can be opened. The solenoid valve 209 allows sludge to be discharged through the sludge discharge pipe 202, and wastewater enters the treatment tank 101 through the drain pipe 109. Flocculant is added through the feed pipe 110 to flocculate harmful substances in the wastewater. The treated water then passes through the treatment membrane 111. After wastewater treatment, the valve on the discharge pipe 112 can be opened to discharge the sediment. The valve on the outlet pipe 113 can be opened to drain the water. This allows for the neutralization of wastewater during the treatment of electroplating heavy metal wastewater, facilitating the separation of the precipitated sludge from the water, and making it easier to dewater and discharge the sludge, thus improving its practicality.

[0052] Rotating component 3 is located inside and at the top of neutralization box 103;

[0053] The rotating assembly 3 includes a mounting bracket 301 fixedly installed on the top of the neutralization tank 103, and a drive motor 302 is fixedly installed on the top of the mounting bracket 301. The output end of the drive motor 302 passes through the mounting bracket 301 and is fixedly installed with a stirring shaft 303. The stirring shaft 303 is rotatably connected to the neutralization tank 103 and the processing tank 101. A plurality of first stirring rods 304 and a plurality of second stirring rods 305 are symmetrically installed on the outside of the stirring shaft 303 inside the neutralization tank 103 and the processing tank 101, respectively.

[0054] A first bevel gear 306 is fixedly installed on the outside of the stirring shaft 303 above the neutralization box 103. A rotating rod 308 is rotatably connected to one side of the mounting bracket 301. A second bevel gear 307 is fixedly installed at one end of the rotating rod 308, and the second bevel gear 307 meshes with the first bevel gear 306. A support frame 309 is fixedly installed on the outside of the rotating rod 308, and the support frame 309 is fixedly connected to the neutralization box 103. A rotating rod 310 is fixedly installed at the other end of the rotating rod 308.

[0055] A column rod 311 is fixedly installed on one side of the rotating rod 310, and a movable frame 312 is slidably connected to the outside of the column rod 311. A conduit 313 is fixedly installed at the bottom of the movable frame 312, and the conduit 313 is slidably connected to the neutralization box 103. A pH probe 316 is fixedly installed at the bottom of the conduit 313, and a positioning block 315 is slidably connected to the outside of the conduit 313. The positioning block 315 is fixedly connected to the neutralization box 103, and a pH meter 314 is fixedly installed above the connecting pipe 108 on the outside of the neutralization box 103.

[0056] Example 2: Figures 1-2 and Figures 6-8As shown, when neutralizing wastewater, the drive motor 302 can be started to drive the stirring shaft 303 to rotate. After the stirring shaft 303 rotates, it can drive the first stirring rod 304 to rotate and the second stirring rod 305 to rotate. During continuous wastewater treatment, it can assist in the neutralization and treatment of wastewater. During the rotation of the stirring shaft 303, the meshing of the first bevel gear 306 and the second bevel gear 307 drives the rotating rod 308 to rotate. After the rotating rod 308 rotates, it drives the column rod 311 on the rotating rod 310 to rotate in a circle. The column rod 311 can drive the movable frame 312 to move up and down reciprocally through the sliding connection with the movable frame 312. The conduit 313 reciprocates, which in turn drives the pH probe 316 to reciprocate. The connecting wire between the pH probe 316 and the pH meter 314 is threaded through the conduit 313, allowing the pH probe 316 to move back and forth in the wastewater. This expands the monitoring range of the pH probe 316, prevents the pH probe 316 from being fixed in one position, and avoids sediment in the wastewater from always floating near the pH probe 316 (during neutralization, sediment may produce carbon dioxide, hydrogen sulfide, etc. due to anaerobic reactions (such as the decomposition of organic matter), which can lower the local pH value). This avoids affecting the accuracy of pH monitoring and improves practicality.

[0057] An L-shaped rod 317 is fixedly installed on the outside of the conduit 313 above the positioning block 315, and a push block 318 is fixedly installed on one side of the L-shaped rod 317. An annular hopper 319 is provided above the interior of the neutralization box 103. Fixing rods 3191 are symmetrically installed on the inner side of the annular hopper 319. Both fixing rods 3191 are fixedly connected to the stirring shaft 303. A feeding trough 320 is symmetrically opened through the interior of the annular hopper 319.

[0058] Two sets of mounting rods 321 are symmetrically installed on the outer side of the annular bucket 319, and a movable frame 322 is slidably connected to the lower outer side of each set of mounting rods 321. An mounting ring 323 is fixedly installed on the top of each set of movable frames 322, and an arc-shaped rod 324 is symmetrically installed on the top of the mounting ring 323. The arc-shaped rod 324 is inserted into the discharge chute 320.

[0059] Example 3: Figure 6 and Figures 8-9As shown, during wastewater neutralization, materials are fed through the feeding hopper 107, and then fall into the annular hopper 319. Alkaline materials can be fed through the discharge trough 320. The rotating stirring shaft 303 drives the annular hopper 319 to rotate, changing the material's position. The reciprocating movement of the conduit 313 moves the push block 318 on the L-shaped rod 317. After moving, the push block 318 abuts against the mounting ring 323. The push block 318 then continues to move upwards, causing the mounting ring 323 to move upwards as well. The mounting ring 323 rotates on the push block 318, and when the push block 318 reaches its highest point, it drives the two arc-shaped rods 324 on the mounting ring 323 to insert into the discharge trough 320, pausing the material's fall. Then, the push block 318... The downward movement of the arc-shaped rod 324 causes it to leave the feeding trough 320 under gravity, allowing for continued material feeding. Meanwhile, the annular hopper 319 rotates, changing the feeding position during the next feeding process. This ensures the alkaline material falls more evenly into the neutralization tank 103, preventing all material from falling into the annular hopper 319 and affecting the uniformity of the feeding. Furthermore, the triangular tops of the cross-sections of the two arc-shaped rods 324 allow the material to be more dispersed in the wastewater after falling onto them. The pH value of the wastewater is determined by the pH meter 314, allowing feeding to stop once the required pH value is reached. This improves the uniformity of the feeding, reduces stirring time, increases reaction efficiency, reduces the possibility of localized pH inconsistencies, and further enhances the accuracy of the pH probe 316.

[0060] Working principle: When using this electroplating heavy metal wastewater zero-discharge reuse treatment device, firstly, according to... Figures 1-9As shown, during wastewater treatment, wastewater is introduced into neutralization tank 103 through inlet pipe 106. Then, lime or sodium hydroxide is added to neutralization tank 103 through feeding hopper 107, causing sedimentation in the wastewater. Afterwards, the control valve on connecting pipe 108 is opened, allowing wastewater and sludge to enter dewatering tank 105 through connecting pipe 108. Wastewater can then enter dewatering hopper 206, which is made of porous ceramic material. Wastewater passes through dewatering hopper 206, while sludge remains in dewatering hopper 206. After the sludge has settled in dewatering hopper 206, rotating motor 203 is started, driving rotating shaft 204 to rotate. The movement of the cross 205 drives the dewatering bucket 206 to rotate, allowing the sludge to undergo dewatering under centrifugal force. During rotation, the rotating shaft 204 drives the turntable 210 to rotate at an offset, which in turn drives the movable rod 211 to reciprocate through the connection between the T-shaped annular groove 213 and the arc-shaped block 212. This causes the piston 216 to reciprocate within the cylinder 214. When the piston 216 moves to the left within the cylinder 214, the one-way valve inside the air inlet 217 closes and the one-way valve inside the air inlet pipe 215 opens, allowing air from inside the cylinder 214 to enter the annular groove 215. In pipe 218, when piston 216 moves to the right, the one-way valve inside air inlet 217 opens and the one-way valve inside air inlet pipe 215 closes, allowing air to be drawn into cylinder 214. During sludge dewatering, the air blowing pipe 219 at the bottom of annular pipe 218 continuously blows air onto the inside of dewatering hopper 206. Under centrifugal force, the sludge adheres to the inside of dewatering hopper 206, and under the action of airflow, the sludge accumulates at the lower inner side of dewatering hopper 206. Although the blowing range is fixed, the rotation of dewatering hopper 206 allows for proper dewatering... The sludge adhering to the inner wall of the water bucket 206 is thoroughly blown off to prevent it from adhering to the inner wall of the dewatering bucket 206. After the sludge dewatering is completed, the solenoid valve 209 on the sludge discharge pipe 202 can be opened to allow the sludge to be discharged through the sludge discharge pipe 202. The wastewater enters the treatment tank 101 through the drain pipe 109. Flocculant is added through the feed pipe 110 to flocculate the harmful substances in the wastewater. The treated water passes through the treatment membrane 111. After the wastewater is treated, the valve on the discharge pipe 112 can be opened to discharge the sediment. The valve above the outlet pipe 113 can be opened to drain the water.

[0061] When neutralizing wastewater, the drive motor 302 can be started to drive the stirring shaft 303 to rotate. After the stirring shaft 303 rotates, it can drive the first stirring rod 304 and the second stirring rod 305 to rotate. During continuous wastewater treatment, it can assist in the neutralization and treatment of wastewater. During the rotation of the stirring shaft 303, the meshing of the first bevel gear 306 and the second bevel gear 307 drives the rotating rod 308 to rotate. After the rotating rod 308 rotates, it drives the column rod 311 on the rotating rod 310 to rotate in a circle. The column rod 311, through the sliding connection with the movable frame 312, can drive the movable frame 312 to move up and down reciprocally, so that the conduit 313 moves back and forth. The conduit 313 allows the pH probe 316 to reciprocate. The connecting wire between the pH probe 316 and the pH meter 314 is threaded through the conduit 313, enabling the pH probe 316 to move back and forth in the wastewater. This expands the monitoring range of the pH probe 316, prevents the pH probe 316 from being fixed in one position, and avoids sediment in the wastewater from constantly floating near the pH probe 316, thus ensuring the accuracy of pH monitoring and improving practicality. During wastewater neutralization, materials are fed through the feeding hopper 107, and after feeding, the materials fall into the annular hopper 319. Alkaline materials can be fed through the feeding trough 320. The stirring shaft 303... During rotation, the annular bucket 319 can rotate, changing the material dropping position. The reciprocating movement of the conduit 313 moves the push block 318 on the L-shaped rod 317. After moving, the push block 318 abuts against the mounting ring 323. Then, the push block 318 continues to move upward, causing the mounting ring 323 to move upward as well. The mounting ring 323 rotates on the push block 318. When the push block 318 reaches its highest point, it causes the two arc-shaped rods 324 on the mounting ring 323 to insert into the discharge trough 320, pausing the material's fall. Afterward, the push block 318 moves downward, causing the arc-shaped rods 324 to leave the discharge trough 320 under gravity, allowing the material to continue falling. The annular hopper 319 rotates, changing the material's position during the feeding process. This allows the alkaline material to fall more evenly into the neutralization tank 103, preventing all material from falling into the annular hopper 319 and affecting the uniformity of the feeding. Furthermore, the top of the cross-section of the two arc-shaped rods 324 is triangular, allowing the material to be more dispersed in the wastewater after falling onto the arc-shaped rods 324. The pH value of the wastewater is determined by the pH meter 314, and feeding is stopped when the required pH value is reached. This improves the uniformity of the feeding, reduces stirring time, increases reaction efficiency, reduces the possibility of local pH inconsistencies, and further improves the accuracy of the pH probe 316 monitoring.

[0062] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0063] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zero-discharge reuse treatment device for electroplating heavy metal wastewater, comprising a base (1), a treatment box (101) is fixedly installed on one side of the top of the base (1), a neutralization box (103) is provided above the treatment box (101), and a dehydration box (105) is provided on one side of the treatment box (101). Its features are, Also includes: A dehydration assembly (2) is disposed inside and on top of a dehydration tank (105), the dehydration assembly (2) including a fixing frame (201); Rotating component (3) is located inside and on top of neutralization box (103); A fixed frame (201) is fixedly installed on the top side of the dehydration tank (105). A rotating motor (203) is fixedly installed on the top of the fixed frame (201), and the output end of the rotating motor (203) passes through the fixed frame (201) and is fixedly installed with a rotating shaft (204). A cross (205) is fixedly installed at the bottom end of the rotating shaft (204), and a dehydration bucket (206) is fixedly installed on the outside of the cross (205). A limiting ring (207) is fixedly installed inside the upper part of the dehydration tank (105). A rotating ring (208) is slidably connected to the inner side of the limiting ring (207), and the rotating ring (208) is fixedly connected to the dehydration bucket (206). A turntable (210) is fixedly installed on the outside of the rotating shaft (204) above the dehydration tank (105). Meanwhile, a movable rod (211) is slidably connected to one side of the fixed frame (201), and an arc block (212) is fixedly installed at one end of the movable rod (211). A T-shaped ring groove (213) is opened on the outside of the turntable (210), and the arc block (212) is slidably connected to the T-shaped ring groove (213). A plurality of columns (104) are fixedly installed on the other side of the top of the base (1), and the tops of the plurality of columns (104) are fixedly connected to the dehydration tank (105). A plurality of uprights (102) are symmetrically installed on the top of the processing tank (101), and the tops of the plurality of uprights (102) are fixedly connected to the neutralization tank (103). A feeding hopper (107) is connected through one side of the top of the neutralization tank (103), and a water inlet pipe (106) is connected through the upper side of one side of the neutralization tank (103). A connecting pipe (108) is connected through the lower side of the other side of the neutralization tank (103), and a connecting pipe (108) is provided on the outer side of the connecting pipe (108). The control valve is provided, and a drain pipe (109) is connected through one side of the bottom of the dehydration tank (105), and the end of the drain pipe (109) away from the dehydration tank (105) is connected through the treatment tank (101). A treatment membrane (111) is fixedly installed inside the treatment tank (101). A feeding pipe (110) is connected through the upper side of one side of the treatment tank (101), and a discharge pipe (112) is connected through the lower side of one side of the treatment tank (101). A water outlet pipe (113) is connected through the lower side of one side of the treatment tank (101), and valves are provided on the outer side of both the discharge pipe (112) and the water outlet pipe (113). A cylinder (214) is fixedly installed on one side of the top of the dehydration tank (105), and the movable rod (211) is slidably connected to the cylinder (214). A piston (216) is slidably connected inside the cylinder (214), and the piston (216) is fixedly connected to the movable rod (211). An air inlet (217) is provided through one side of the top of the cylinder (214), and an air inlet pipe (215) is connected through one side of the cylinder (214). A one-way valve is provided inside both the air inlet (217) and the air inlet pipe (215). An exhaust pipe (220) is connected through one side of the top of the dehydration tank (105). An annular pipe (218) is fixedly installed at the top of the dehydration tank (105), and the end of the air inlet pipe (215) away from the cylinder (214) passes through the dehydration tank (105) and is connected to the annular pipe (218). Two sets of air blowing pipes (219) are symmetrically connected to the bottom of the annular pipe (218). At the same time, a mud discharge pipe (202) is connected to the bottom of the dehydration hopper (206). The mud discharge pipe (202) is rotatably connected to the dehydration tank (105), and a solenoid valve (209) is provided on the upper part of the inside of the mud discharge pipe (202).

2. The zero-discharge reuse treatment device for electroplating heavy metal wastewater according to claim 1, characterized in that: The rotating assembly (3) includes a mounting bracket (301) fixedly installed on the top of the neutralization tank (103), and a drive motor (302) is fixedly installed on the top of the mounting bracket (301). The output end of the drive motor (302) passes through the mounting bracket (301) and is fixedly installed with a stirring shaft (303). The stirring shaft (303) is rotatably connected to the neutralization tank (103) and the processing tank (101). Furthermore, a plurality of first stirring rods (304) and a plurality of second stirring rods (305) are symmetrically installed on the outside of the stirring shaft (303) inside the neutralization tank (103) and the processing tank (101), respectively.

3. The zero-discharge reuse treatment device for electroplating heavy metal wastewater according to claim 2, characterized in that: A first bevel gear (306) is fixedly installed on the outside of the stirring shaft (303) above the neutralization box (103), and a rotating rod (308) is rotatably connected to the inside side of the mounting bracket (301). A second bevel gear (307) is fixedly installed at one end of the rotating rod (308), and the second bevel gear (307) meshes with the first bevel gear (306). A support frame (309) is fixedly installed on the outside side of the rotating rod (308), and the support frame (309) is fixedly connected to the neutralization box (103). A rotating rod (310) is fixedly installed at the other end of the rotating rod (308).

4. The zero-discharge reuse treatment device for electroplating heavy metal wastewater according to claim 3, characterized in that: A column rod (311) is fixedly installed below one side of the rotating rod (310), and a movable frame (312) is slidably connected to the outside of the column rod (311). A conduit (313) is fixedly installed at the bottom of the movable frame (312), and the conduit (313) is slidably connected to the neutralization box (103). A pH probe (316) is fixedly installed at the bottom end of the conduit (313), and a positioning block (315) is slidably connected to the outside of the conduit (313). The positioning block (315) is fixedly connected to the neutralization box (103), and a pH meter (314) is fixedly installed above the connecting pipe (108) on the outside of the neutralization box (103).

5. The zero-discharge reuse treatment device for electroplating heavy metal wastewater according to claim 4, characterized in that: An L-shaped rod (317) is fixedly installed on the outside of the conduit (313) above the positioning block (315), and a push block (318) is fixedly installed on one side of the L-shaped rod (317). An annular hopper (319) is provided above the interior of the neutralization box (103), and a fixing rod (3191) is symmetrically installed on the inner side of the annular hopper (319). Both fixing rods (3191) are fixedly connected to the stirring shaft (303), and a feeding trough (320) is symmetrically opened through the interior of the annular hopper (319).

6. The zero-discharge reuse treatment device for electroplating heavy metal wastewater according to claim 5, characterized in that: Two sets of mounting rods (321) are symmetrically installed on the outer side of the annular bucket (319), and a movable frame (322) is slidably connected to the lower outer side of each of the two sets of mounting rods (321). An mounting ring (323) is fixedly installed on the top of each of the two sets of movable frames (322), and an arc-shaped rod (324) is symmetrically installed on the top of the mounting ring (323). The arc-shaped rod (324) is inserted into the feed chute (320).

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