Integrated wastewater treatment equipment and treatment method of organic glass polishing operation wastewater

Abstract

The application relates to the technical field of wastewater treatment equipment, and discloses an integrated wastewater treatment equipment and a treatment method for organic glass polishing operation wastewater, which comprises a shell, an electric flocculation treatment device, a centrifugal separation device and a distribution box are arranged in the shell, and a water inlet end of the electric flocculation treatment device is used for receiving wastewater; the integrated wastewater treatment equipment is provided with rotatable anode plates and cathode rods in a flocculation tank, water body flow is driven by the rotation of the anode plates in the flocculation process, efficient treatment of the wastewater can be realized without relying on traditional aeration equipment, air pollution and human health hazards caused by diffusion of tiny impurities into the air during the aeration process are avoided, on the one hand, and on the other hand, the anode plates are driven to rotate through the forward rotation driving assembly when the control shaft is in the forward rotation state, the contact effect of the wastewater and the electrodes can be strengthened, the flocculation speed is accelerated, the wastewater after flocculation is separated through the centrifugal separation device, and the pollutant removal efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to an integrated wastewater treatment device and a method for treating wastewater from acrylic glass polishing operations. Background Technology

[0002] Polishing large-size acrylic transparent parts requires the use of sandpaper of different grits, polishing paste, lubricant, and neutral detergent, involving several rounds of polishing and reliance on large amounts of deionized water rinsing to control the temperature and cleanliness of the work surface (to prevent particle scratches). This process generates a specific white emulsion-like wastewater. Although the wastewater discharge volume is small, the different types of pastes used in different polishing steps lead to significant fluctuations in pollutant concentrations at each stage, increasing the difficulty of treatment. Electrochemical demulsification and flocculation technology uses a suitable DC power module and applicable soluble electrode materials (iron and aluminum). After being energized, the wastewater undergoes a contact reaction. Under the influence of the electric field, electrons move, thereby disrupting the stability of the emulsion and achieving demulsification. Furthermore, the metal ions precipitated from the soluble electrodes can aggregate with particles in the water to form flocs. This process is simple, requires no chemical addition, is unaffected by water quality fluctuations, and can automatically adjust the power to ensure stable demulsification results. It is suitable for treating wastewater from the polishing of acrylic transparent parts.

[0003] In existing wastewater treatment technologies using electrocoagulation, aeration equipment is often used to accelerate water flow and increase flocculation speed. This involves introducing air into the flocculation tank to enhance mass transfer and mixing. However, the bubbles generated during aeration can easily carry tiny impurities from the water out and diffuse into the surrounding air, causing secondary diffusion of pollutants and negatively impacting air quality. This problem is particularly pronounced in enclosed or semi-enclosed treatment environments, endangering the health of operators and failing to meet environmental protection requirements.

[0004] Wastewater from acrylic glass polishing operations contains a large amount of glass powder and polishing paste powder. These powder particles are fine, highly suspended, and extremely harmful to the human body. If they are diffused into the air with the bubbles during the aeration process, operators will suffer serious damage to their respiratory system if they inhale them. Long-term exposure may also cause other health problems. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an integrated wastewater treatment device and a method for treating wastewater from acrylic glass polishing operations. This device can improve flocculation speed and prevent flocculation products from adhering to the inside of the device without the need for aeration equipment, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides the following technical solution: An integrated wastewater treatment device includes a housing, inside which an electrocoagulation treatment device, a centrifugal separation device, and a power distribution box are installed. The inlet of the electrocoagulation treatment device is used to receive wastewater, and the outlet of the electrocoagulation treatment device is connected to the inlet of the centrifugal separation device. The centrifugal separation device is used to centrifuge the flocculated wastewater and discharge the filtered water from the centrifugal separation device. The electrocoagulation treatment device includes a flocculation tank, an anode plate, and a cathode rod. The anode plate and cathode rod are both installed inside the flocculation tank and are electrically connected to the distribution box. The drainage end of the flocculation tank is provided with a slag discharge port, and a solenoid valve is provided on the slag discharge port. The anode plate is arranged around the outside of the cathode rod. The electrocoagulation treatment device is also provided with a mounting frame, a cleaning component, a control shaft, a forward rotation drive component and a reverse rotation drive component. The mounting frame is fixedly installed at the upper end of the flocculation tank. The control shaft is rotatably installed on the mounting frame. The cleaning component is installed inside the flocculation tank and is used to scrape off impurities adhering to the inner wall of the flocculation tank. When the control shaft rotates forward, the anode plate is driven to rotate by the forward rotation drive assembly, and the reverse rotation drive assembly cannot achieve transmission at this time; when the control shaft rotates in reverse, the cleaning assembly is driven by the reverse rotation drive assembly to scrape the flocculent material off the inner wall of the flocculation tank.

[0007] Preferably, the flocculation tank has an opening at its upper end, and a rotating ring is rotatably mounted on the opening. The rotating ring is fixedly mounted on the upper end of the anode plate, and the cathode rod is rotatably mounted on the inner side of the rotating ring.

[0008] Preferably, the anode plate includes a spiral conductive sheet, an upper insulating plate, a lower insulating plate, and an insulating positioning rod. The upper and lower ends of the spiral conductive sheet and the insulating positioning rod are fixedly connected to the upper insulating plate and the lower insulating plate, respectively. The spiral conductive sheet has a positioning hole for inserting the insulating positioning rod. The upper insulating plate is fixedly connected to the rotating ring.

[0009] Preferably, the forward rotation drive assembly includes a forward rotation one-way gear, a forward rotation transmission ring, a forward rotation transmission shaft, and a forward rotation driven gear. The forward rotation one-way gear is fixedly mounted on the control shaft, the forward rotation transmission ring is rotatably mounted on the control shaft and sleeved on the outside of the forward rotation one-way gear, the forward rotation transmission shaft is rotatably mounted on a mounting bracket, the forward rotation driven gear is fixedly mounted on a rotating ring, and intermediate gears that mesh with the forward rotation transmission ring and the forward rotation driven gear are respectively mounted on the forward rotation transmission shaft. A forward rotation groove is provided on the forward rotation one-way gear, and a forward rotation one-way locking block is slidably installed on the forward rotation groove. A forward rotation one-way locking slot is provided on the inner side wall of the forward rotation transmission ring. A forward rotation support spring is fixedly installed between the forward rotation groove and the forward rotation one-way locking block. When the control shaft rotates forward, the forward rotation one-way locking slot engages with the forward rotation one-way locking block, causing the forward rotation transmission ring to rotate accordingly. When the control shaft rotates in reverse, the forward rotation one-way locking block squeezes the forward rotation support spring out of the forward rotation one-way locking slot, so that the forward rotation transmission ring can remain stationary.

[0010] Preferably, the lower end of the flocculation tank is configured as a hollow inverted cone shape, and the cleaning component includes a scraper and a scraper ring. The scraper is in close contact with the inner wall of the lower end of the flocculation tank, and the scraper ring is disposed above the scraper and is in close contact with the vertical part of the inner wall of the flocculation tank. The outer surfaces of the scraper ring and the scraper are provided with wear-resistant rubber scrapers.

[0011] Preferably, the cleaning assembly further includes a positive and negative threaded rod and a guide rod. The positive and negative threaded rod is rotatably connected to the flocculation tank and threaded to one end of the scraper ring. The guide rod is fixedly connected to the flocculation tank and slidably connected to the scraper ring.

[0012] Preferably, the reverse drive assembly includes a reverse one-way gear, a reverse transmission ring, a reverse transmission shaft, a reverse inner driven gear, and a reverse outer driven gear. The reverse one-way gear is fixedly mounted on the control shaft, the reverse transmission ring is rotatably mounted on the control shaft and sleeved on the outside of the reverse one-way gear, the reverse transmission shaft is rotatably mounted on a mounting bracket, the reverse inner driven gear is fixedly mounted on the cathode rod, and intermediate gears that mesh with the reverse transmission ring, the reverse inner driven gear, and the reverse outer driven gear are respectively mounted on the reverse transmission shaft. An external driven gear is fixedly installed on the upper end of a forward and reverse threaded rod. A reverse sliding groove is provided on the reverse one-way gear. A reverse one-way locking block is slidably installed on the reverse sliding groove. A reverse one-way locking groove is provided on the inner side wall of the reverse transmission ring. A reverse support spring is fixedly installed between the reverse sliding groove and the reverse one-way locking block. When the control shaft reverses, the reverse one-way locking groove engages with the reverse one-way locking block, causing the reverse transmission ring to rotate accordingly. When the control shaft rotates forward, the reverse one-way locking block squeezes the reverse support spring out of the reverse one-way locking groove, allowing the reverse transmission ring to remain stationary.

[0013] Preferably, the electrocoagulation treatment device further includes a drive motor, which is fixedly mounted on the mounting frame, and the drive end of the drive motor is fixedly connected to the control shaft.

[0014] Preferably, a water supply pump and a water delivery pump are fixedly installed inside the outer casing. Both the water supply pump and the water delivery pump are electrically connected to the distribution box. A water inlet is provided on one side wall of the flocculation tank. The pumping end of the water supply pump extends to the outside of the outer casing, and the water delivery end of the water supply pump is connected to the water inlet. The pumping end of the water delivery pump is connected to the slag discharge port, and the water delivery end of the water delivery pump extends to the inlet of the centrifugal separator. The outlet of the centrifugal separator is connected to the outside of the outer casing through a pipe.

[0015] This invention also discloses a method for treating wastewater from acrylic glass polishing operations, the specific steps of which are as follows: Start the power distribution box to supply power to the electrocoagulation treatment device, and pass the wastewater from the plexiglass polishing operation into the flocculation tank of the electrocoagulation treatment device so that the wastewater comes into contact with the anode plate and cathode rod in the flocculation tank, and flocculates the impurities in the wastewater through electrode reaction. During the flocculation process, the drive control shaft rotates forward, which in turn drives the anode plate to rotate, and the anode plate drives the water to flow. After flocculation is completed, open the solenoid valve of the slag discharge port to let the flocculated wastewater flow into the centrifugal separation device, start the centrifugal separation device to centrifuge the wastewater, and discharge the filtered water from the centrifugal separation device after separation. When there are many impurities adhering to the inner wall of the flocculation tank, the drive control shaft reverses, and the reverse drive component drives the cleaning component to scrape off the impurities from the inner wall of the flocculation tank. The impurities are discharged from the slag discharge port.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides an integrated wastewater treatment device and a method for treating wastewater from acrylic glass polishing operations, which has the following beneficial effects: 1. This integrated wastewater treatment equipment, by setting a rotatable anode plate and cathode rod in the flocculation tank, utilizes the rotation of the anode plate to drive the water flow during the flocculation process, achieving efficient wastewater treatment without relying on traditional aeration equipment. On the one hand, it avoids air pollution and health hazards caused by tiny impurities spreading into the air with the bubbles during aeration. On the other hand, when the control shaft rotates forward, it drives the anode plate to rotate through the forward rotation drive component, which can enhance the contact effect between wastewater and electrodes and accelerate the flocculation speed. Subsequently, the flocculated wastewater is separated by a centrifugal separation device, which greatly improves the pollutant removal efficiency. At the same time, the overall integrated structure reduces the equipment footprint and simplifies the operation and maintenance process, meeting the requirements of efficient and environmentally friendly wastewater treatment.

[0017] 2. This integrated wastewater treatment equipment, by incorporating a spiral conductive plate, upper insulating plate, lower insulating plate, and insulating positioning rod, not only expands the contact area between the electrode and wastewater through the spiral conductive plate, enhancing the electrochemical demulsification and flocculation effect, but also effectively promotes water circulation during the rotation of the spiral conductive plate, increasing the demulsification and flocculation speed. Simultaneously, the insulating positioning rod ensures the structural stability of the spiral conductive plate, preventing vibration during rotation. Furthermore, the inclusion of scrapers and scraper rings precisely removes adhering impurities from the inverted conical bottom and vertical sections of the tank wall, preventing impurity accumulation from affecting subsequent treatment efficiency and extending the equipment's service life.

[0018] 3. This integrated wastewater treatment equipment achieves a unidirectional transmission effect by setting up a forward rotation one-way gear, a forward rotation transmission ring and a forward rotation support spring cooperation structure in the forward rotation drive component, and a reverse rotation one-way gear, a reverse rotation transmission ring and a reverse rotation support spring cooperation structure in the reverse rotation drive component. This results in the control shaft rotating forward only driving the anode plate to rotate, and rotating in reverse only driving the cleaning component to run. There is no need to set up an additional complex switching mechanism, which simplifies the equipment's transmission system.

[0019] 4. This integrated wastewater treatment equipment, through the electrical connection design of the water supply pump, water conveyance pump and distribution box, realizes the automated control of wastewater transportation and equipment operation, reduces manual operation intervention, and improves the stability and convenience of the overall treatment process. It is especially suitable for wastewater treatment scenarios with significant fluctuations in pollutant concentration, such as wastewater from plexiglass polishing operations. Attached Figure Description

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of the integrated wastewater treatment equipment of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of the integrated wastewater treatment equipment of the present invention; Figure 3 This is the third three-dimensional structural schematic diagram of the integrated wastewater treatment equipment of the present invention; Figure 4 This is the fourth three-dimensional structural schematic diagram of the integrated wastewater treatment equipment of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the local structure at point A; Figure 6 This is the fifth three-dimensional structural schematic diagram of the integrated wastewater treatment equipment of the present invention; Figure 7 This is the sixth three-dimensional structural schematic diagram of the integrated wastewater treatment equipment of the present invention; Figure 8 For the present invention Figure 7 A magnified view of the local structure at point B.

[0021] In the picture: 1. Outer shell; 2. Electrocoagulation treatment device; 21. Flocculation tank; 211. Slag discharge port; 212. Water inlet; 22. Anode plate; 221. Spiral conductive sheet; 222. Upper insulating plate; 223. Lower insulating plate; 224. Insulating positioning rod; 225. Rotary ring; 23. Cathode rod; 24. Mounting bracket; 25. Cleaning assembly; 251. Scraper; 252. Scraper ring; 253. Positive and negative threaded rod; 254. Guide rod; 26. Control shaft; 27. Forward rotation drive assembly; 271. Forward rotation one-way gear; 272. Forward rotation transmission ring; 273. Forward rotation transmission shaft; 2 74. Forward driven gear; 275. Forward slide groove; 276. Forward one-way locking block; 277. Forward one-way locking groove; 278. Forward support spring; 28. Reverse drive assembly; 281. Reverse one-way gear; 282. Reverse transmission ring; 283. Reverse transmission shaft; 284. Reverse inner driven gear; 285. Reverse slide groove; 286. Reverse one-way locking block; 287. Reverse one-way locking groove; 288. Reverse support spring; 289. Reverse outer driven gear; 29. ​​Drive motor; 3. Centrifugal separator; 4. Distribution box; 5. Water pump; 6. Water pump. Detailed Implementation

[0022] 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.

[0023] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The present invention provides an integrated wastewater treatment device, including a housing 1. An electrocoagulation treatment device 2, a centrifugal separation device 3 and a power distribution box 4 are installed inside the housing 1. The water inlet of the electrocoagulation treatment device 2 is used to receive wastewater, and the water outlet of the electrocoagulation treatment device 2 is connected to the water inlet of the centrifugal separation device 3. The centrifugal separation device 3 is used to centrifuge the flocculated wastewater and discharge the filtered water from the centrifugal separation device 3. The electrocoagulation treatment device 2 includes a flocculation tank 21, an anode plate 22 and a cathode rod 23. The anode plate 22 and the cathode rod 23 are both installed inside the flocculation tank 21, and the anode plate 22 and the cathode rod 23 are both electrically connected to the distribution box 4. The drainage end of the flocculation tank 21 is provided with a slag discharge port 211, and a solenoid valve is provided on the slag discharge port 211. The anode plate 22 is arranged around the outside of the cathode rod 23. The electrocoagulation treatment device 2 is also provided with a mounting frame 24, a cleaning component 25, a control shaft 26, a forward drive component 27 and a reverse drive component 28. The mounting frame 24 is fixedly installed on the upper end of the flocculation tank 21. The control shaft 26 is rotatably installed on the mounting frame 24. The cleaning component 25 is installed inside the flocculation tank 21 and is used to scrape off impurities that are stuck to the inner wall of the flocculation tank 21. When the control shaft 26 rotates forward, the anode plate 22 is driven to rotate by the forward drive assembly 27, and the reverse drive assembly 28 cannot achieve transmission at this time; when the control shaft 26 rotates in reverse, the cleaning assembly 25 is driven by the reverse drive assembly 28 to scrape the flocculent material off the inner wall of the flocculation tank 21.

[0024] As can be seen from the above, by setting a rotatable anode plate 22 and cathode rod 23 inside the flocculation tank 21, the rotation of the anode plate 22 drives the water flow during the flocculation process, achieving efficient wastewater treatment without relying on traditional aeration equipment. On the one hand, this avoids air pollution and health hazards caused by tiny impurities spreading into the air with the bubbles during aeration. On the other hand, when the control shaft 26 rotates forward, the forward rotation drive component 27 drives the anode plate 22 to rotate, which can enhance the contact effect between the wastewater and the electrode and accelerate the flocculation speed. Subsequently, the flocculated wastewater is separated by the centrifugal separation device 3, which greatly improves the pollutant removal efficiency. At the same time, the overall integrated structure reduces the equipment footprint and simplifies the operation and maintenance process, meeting the requirements of efficient and environmentally friendly wastewater treatment. In addition, after flocculation is completed, the control shaft 26 reverses to drive the cleaning component 25 to scrape the flocs off the inner wall of the flocculation tank 21, which can prevent the flocs from accumulating inside the flocculation tank 21 and affecting subsequent wastewater treatment.

[0025] When using this device, the power distribution box 4 is turned on to supply power to the electrocoagulation treatment device 2. The wastewater from the plexiglass polishing operation is fed into the flocculation tank 21 of the electrocoagulation treatment device 2, so that the wastewater comes into contact with the anode plate 22 and cathode rod 23 in the flocculation tank 21. The impurities in the wastewater are flocculated through electrode reaction. During the flocculation process, the drive control shaft 26 rotates forward, and the forward rotation drive component 27 drives the anode plate 22 to rotate, and the anode plate 22 drives the water to flow. After flocculation is completed, the solenoid valve of the slag discharge port 211 is opened to let the flocculated wastewater flow into the centrifugal separator 3. The centrifugal separator 3 is started to centrifuge the wastewater. After separation, the filtered water is discharged from the centrifugal separator 3. When there are a lot of impurities adhering to the inner wall of the flocculation tank 21, the drive control shaft 26 is reversed. The reverse rotation drive component 28 drives the cleaning component 25 to scrape off the impurities on the inner wall of the flocculation tank 21. The impurities are discharged from the slag discharge port 211.

[0026] Example 2 like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the difference between this embodiment and the above embodiment is that the upper end of the flocculation tank 21 is provided with an opening, and a rotating ring 225 is rotatably installed on the opening. The rotating ring 225 is fixedly installed on the upper end of the anode plate 22, and the cathode rod 23 is rotatably installed on the inner side of the rotating ring 225.

[0027] As can be seen from the above, by rotating and installing the rotating ring 225 at the upper opening of the flocculation tank 21, not only is a stable rotation support point provided for the anode plate 22, ensuring that the anode plate 22 rotates precisely around the cathode rod 23 and avoiding electrode offset affecting the flocculation effect during operation, but also the relative stability of the cathode rod 23 is achieved when the anode plate 22 rotates through the rotational cooperation between the rotating ring 225 and the cathode rod 23.

[0028] The anode plate 22 includes a spiral conductive sheet 221, an upper insulating plate 222, a lower insulating plate 223, and an insulating positioning rod 224. The upper and lower ends of the spiral conductive sheet 221 and the insulating positioning rod 224 are fixedly connected to the upper insulating plate 222 and the lower insulating plate 223, respectively. The spiral conductive sheet 221 has a positioning hole for inserting the insulating positioning rod 224. The upper insulating plate 222 is fixedly connected to the rotating ring 225.

[0029] As can be seen from the above, the spiral conductive sheet 221 increases the contact area between the electrode and the wastewater, enhances the electron transfer efficiency, and accelerates the precipitation of metal ions and the formation of flocs. At the same time, the spiral conductive sheet 221 can better drive the water flow when rotating, avoiding insufficient water flow in the vertical direction, thereby further improving the flocculation effect. The upper insulating plate 222, the lower insulating plate 223 and the insulating positioning rod 224 fix the spiral conductive sheet 221 between the upper insulating plate 222 and the lower insulating plate 223, preventing the spiral conductive sheet 221 from deforming or misaligning due to water flow impact during rotation, and ensuring the structural stability of the anode plate 22. In this application, a conductive slip ring can be set on the flocculation tank 21, and the conductive slip ring can be connected to the spiral conductive sheet 221, so that the anode plate 22 can always remain charged during rotation.

[0030] The forward rotation drive assembly 27 includes a forward rotation one-way gear 271, a forward rotation transmission ring 272, a forward rotation transmission shaft 273, and a forward rotation driven gear 274. The forward rotation one-way gear 271 is fixedly mounted on the control shaft 26. The forward rotation transmission ring 272 is rotatably mounted on the control shaft 26 and is sleeved on the outside of the forward rotation one-way gear 271. The forward rotation transmission shaft 273 is rotatably mounted on the mounting bracket 24. The forward rotation driven gear 274 is fixedly mounted on the rotating ring 225. Intermediate gears that mesh with the forward rotation transmission ring 272 and the forward rotation driven gear 274 are respectively mounted on the forward rotation transmission shaft 273. A forward rotation groove 275 is provided on the wheel 271, and a forward rotation one-way locking block 276 is slidably installed on the forward rotation groove 275. A forward rotation one-way locking groove 277 is provided on the inner side wall of the forward rotation transmission ring 272. A forward rotation support spring 278 is fixedly installed between the forward rotation groove 275 and the forward rotation one-way locking block 276. When the control shaft 26 rotates forward, the forward rotation one-way locking groove 277 engages with the forward rotation one-way locking block 276, causing the forward rotation transmission ring 272 to rotate accordingly. When the control shaft 26 rotates in reverse, the forward rotation one-way locking block 276 squeezes the forward rotation support spring 278 and disengages it from the forward rotation one-way locking groove 277, so that the forward rotation transmission ring 272 can remain stationary.

[0031] As can be seen from the above, the forward rotation one-way gear 271, the forward rotation transmission ring 272, and the forward rotation support spring 278 realize the power transmission when the control shaft 26 rotates forward. When the control shaft 26 rotates forward, the forward rotation one-way block 276 is engaged in the forward rotation one-way slot 277 under the action of the spring force, which drives the forward rotation transmission ring 272 to rotate. Then, the power is transmitted to the rotating ring 225 through the forward rotation transmission shaft 273 and the intermediate gear, which finally drives the anode plate 22 to rotate. When the control shaft 26 rotates in reverse, the forward rotation one-way gear 271 rotates and the forward rotation one-way block 276 is squeezed out of the forward rotation one-way slot 277. The forward rotation transmission ring 272 can remain stationary, avoiding power interference with the anode plate 22 when rotating in reverse.

[0032] Example 3 like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the difference between this embodiment and the above embodiment is that the lower end of the flocculation tank 21 is set as a hollow inverted cone shape, and the cleaning component 25 includes a scraper 251 and a scraper ring 252. The scraper 251 is close to the inner side wall of the lower end of the flocculation tank 21, and the scraper ring 252 is set above the scraper 251 and is close to the vertical part of the inner wall of the flocculation tank 21. The outer sides of the scraper ring 252 and the scraper 251 are both provided with wear-resistant rubber scrapers.

[0033] As can be seen from the above, the scraper ring 252 can remove the adhering impurities on the vertical part of the flocculation tank 21 wall, while the scraper 251 scrapes off the accumulated flocs at the bottom of the inverted cone shape of the flocculation tank 21 to prevent impurities from remaining in the dead corners at the bottom of the tank.

[0034] The cleaning assembly 25 also includes a positive and negative threaded rod 253 and a guide rod 254. The positive and negative threaded rod 253 is rotatably connected to the flocculation tank 21 and is threaded to one end of the scraper ring 252. The guide rod 254 is fixedly connected to the flocculation tank 21 and is slidably connected to the scraper ring 252.

[0035] As can be seen from the above, by setting the positive and negative threaded rod 253 to be threadedly connected to the scraper ring 252, and the guide rod 254 to be slidably connected to the scraper ring 252, when the positive and negative threaded rod 253 rotates, the scraper ring 252 can move stably up and down along the guide rod 254, realizing reciprocating cleaning of the vertical part of the tank wall, avoiding the problem of incomplete cleaning of a single position. The surface of the positive and negative threaded rod 253 is provided with two threads in opposite directions, and the inside of the scraper ring 252 is provided with a composite internal thread structure that is adapted to the double threads of the positive and negative threaded rod 253. When the scraper ring 252 moves to the end of the threaded rod, the composite internal thread automatically engages with the other reverse thread to realize the switching of the movement direction, thereby realizing the up and down reciprocating movement.

[0036] The reverse drive assembly 28 includes a reverse one-way gear 281, a reverse transmission ring 282, a reverse transmission shaft 283, a reverse inner driven gear 284, and a reverse outer driven gear 289. The reverse one-way gear 281 is fixedly mounted on the control shaft 26. The reverse transmission ring 282 is rotatably mounted on the control shaft 26 and is sleeved on the outside of the reverse one-way gear 281. The reverse transmission shaft 283 is rotatably mounted on the mounting bracket 24. The reverse inner driven gear 284 is fixedly mounted on the cathode rod 23. Intermediate gears that mesh with the reverse transmission ring 282, the reverse inner driven gear 284, and the reverse outer driven gear 289 are respectively mounted on the reverse transmission shaft 283. Wheel 289 is fixedly installed on the upper end of the forward and reverse threaded rod 253. A reverse one-way gear 281 is provided with a reverse sliding groove 285. A reverse one-way locking block 286 is slidably installed on the reverse sliding groove 285. A reverse one-way locking groove 287 is provided on the inner side wall of the reverse transmission ring 282. A reverse support spring 288 is fixedly installed between the reverse sliding groove 285 and the reverse one-way locking block 286. When the control shaft 26 reverses, the reverse one-way locking groove 287 engages with the reverse one-way locking block 286, causing the reverse transmission ring 282 to rotate accordingly. When the control shaft 26 rotates forward, the reverse one-way locking block 286 squeezes the reverse support spring 288 and disengages it from the reverse one-way locking groove 287, so that the reverse transmission ring 282 can remain stationary.

[0037] As can be seen from the above, by setting the reverse one-way gear 281, the reverse transmission ring 282 and the reverse support spring 288, the power transmission when the control shaft 26 reverses is realized. When the control shaft 26 reverses, the reverse one-way locking block 286 is engaged in the reverse one-way locking slot 287 to drive the reverse transmission ring 282 to rotate. The power is transmitted through the reverse transmission shaft 283 to the reverse inner driven gear 284 and the reverse outer driven gear 289, driving the forward and reverse threaded rod 253 and the cathode rod 23 to rotate so as to realize the operation of the cleaning component 25. When the control shaft 26 rotates forward, the reverse one-way locking block 286 is disengaged, and the reverse transmission ring 282 can remain stationary.

[0038] Example 4 like Figure 1 , Figure 5 and Figure 6 As shown, the difference between this embodiment and the above embodiment is that the electrocoagulation treatment device 2 further includes a drive motor 29, which is fixedly mounted on the mounting bracket 24, and the drive end of the drive motor 29 is fixedly connected to the control shaft 26.

[0039] As can be seen from the above, the drive motor 29 is used to provide a power source for the forward and reverse rotation of the control shaft 26.

[0040] Inside the outer casing 1, a water pump 5 and a water delivery pump 6 are also fixedly installed. Both the water pump 5 and the water delivery pump 6 are electrically connected to the distribution box 4. A water inlet 212 is provided on one side wall of the flocculation tank 21. The water pump 5 extends to the outside of the outer casing 1 and the water delivery end of the water pump 5 is connected to the water inlet 212. The water pump 6 is connected to the slag discharge port 211 and the water delivery end of the water pump 6 extends to the inlet of the centrifugal separator 3. The outlet of the centrifugal separator 3 is connected to the outside of the outer casing 1 through a pipe.

[0041] As can be seen from the above, since both the water pump 5 and the water delivery pump 6 are electrically connected to the distribution box 4, the water pump 5 can stably control the wastewater inlet speed to avoid insufficient flocculation due to excessively fast inlet or affect the treatment efficiency due to excessively slow inlet. The water delivery pump 6 ensures that the flocculated wastewater is transferred to the centrifugal separation device 3 in a timely manner to avoid stagnation in the flocculation tank 21.

[0042] Example 5 Please see Figure 1 - Figure 8 The present invention also discloses a method for treating wastewater from acrylic glass polishing operations, the specific steps of which are as follows: Start the power distribution box 4 to supply power to the electrocoagulation treatment device 2, and pass the wastewater from the plexiglass polishing operation into the flocculation tank 21 of the electrocoagulation treatment device 2, so that the wastewater comes into contact with the anode plate 22 and cathode rod 23 in the flocculation tank 21, and flocculates the impurities in the wastewater through electrode reaction. During the flocculation process, the drive control shaft 26 rotates forward, and the forward rotation drive component 27 drives the anode plate 22 to rotate, and the anode plate 22 drives the water to flow. After flocculation is completed, open the solenoid valve of the slag discharge port 211 to let the flocculated wastewater flow into the centrifugal separation device 3, start the centrifugal separation device 3 to centrifuge the wastewater, and discharge the filtered water from the centrifugal separation device 3 after separation. When there are many impurities adhering to the inner wall of the flocculation tank 21, the drive control shaft 26 reverses, and the cleaning component 25 is driven by the reverse drive component 28 to scrape off the impurities from the inner wall of the flocculation tank 21. The impurities are discharged from the slag discharge port 211.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated wastewater treatment device, comprising a casing, characterized in that: The interior of the casing is equipped with an electrocoagulation treatment device, a centrifugal separation device, and a power distribution box. The inlet of the electrocoagulation treatment device is used to receive wastewater, and the outlet of the electrocoagulation treatment device is connected to the inlet of the centrifugal separation device. The centrifugal separation device is used to centrifuge the flocculated wastewater and discharge the filtered water from the centrifugal separation device. The electrocoagulation treatment device includes a flocculation tank, an anode plate, and a cathode rod. The anode plate and cathode rod are both installed inside the flocculation tank and are electrically connected to the distribution box. The drainage end of the flocculation tank is provided with a slag discharge port, and a solenoid valve is provided on the slag discharge port. The anode plate is arranged around the outside of the cathode rod. The electrocoagulation treatment device is also provided with a mounting frame, a cleaning component, a control shaft, a forward rotation drive component and a reverse rotation drive component. The mounting frame is fixedly installed at the upper end of the flocculation tank. The control shaft is rotatably installed on the mounting frame. The cleaning component is installed inside the flocculation tank and is used to scrape off impurities adhering to the inner wall of the flocculation tank. When the control shaft rotates forward, the anode plate is driven to rotate by the forward rotation drive assembly, and the reverse rotation drive assembly cannot achieve transmission at this time; when the control shaft rotates in reverse, the cleaning assembly is driven by the reverse rotation drive assembly to scrape the flocculent material off the inner wall of the flocculation tank.

2. The integrated wastewater treatment equipment according to claim 1, characterized in that: The flocculation tank has an opening at its upper end, and a rotating ring is rotatably mounted on the opening. The rotating ring is fixedly mounted on the upper end of the anode plate, and the cathode rod is rotatably mounted on the inner side of the rotating ring.

3. The integrated wastewater treatment equipment according to claim 2, characterized in that: The anode plate includes a spiral conductive sheet, an upper insulating plate, a lower insulating plate, and an insulating positioning rod. The upper and lower ends of the spiral conductive sheet and the insulating positioning rod are fixedly connected to the upper insulating plate and the lower insulating plate, respectively. The spiral conductive sheet has a positioning hole for inserting the insulating positioning rod. The upper insulating plate is fixedly connected to the rotating ring.

4. The integrated wastewater treatment equipment according to claim 1, characterized in that: The forward rotation drive assembly includes a forward rotation one-way gear, a forward rotation transmission ring, a forward rotation transmission shaft, and a forward rotation driven gear. The forward rotation one-way gear is fixedly mounted on a control shaft. The forward rotation transmission ring is rotatably mounted on the control shaft and is sleeved on the outside of the forward rotation one-way gear. The forward rotation transmission shaft is rotatably mounted on a mounting bracket. The forward rotation driven gear is fixedly mounted on a rotating ring. Intermediate gears that mesh with the forward rotation transmission ring and the forward rotation driven gear are respectively mounted on the forward rotation transmission shaft. A forward rotation groove is provided on the one-way gear, and a forward rotation one-way locking block is slidably installed on the forward rotation groove. A forward rotation one-way locking groove is provided on the inner side wall of the forward rotation transmission ring. A forward rotation support spring is fixedly installed between the forward rotation groove and the forward rotation one-way locking block. When the control shaft rotates forward, the forward rotation one-way locking groove and the forward rotation one-way locking block engage, causing the forward rotation transmission ring to rotate accordingly. When the control shaft rotates in reverse, the forward rotation one-way locking block squeezes the forward rotation support spring out of the forward rotation one-way locking groove, so that the forward rotation transmission ring can remain stationary.

5. The integrated wastewater treatment equipment according to claim 1, characterized in that: The lower end of the flocculation tank is configured as a hollow inverted cone. The cleaning component includes a scraper and a scraper ring. The scraper is in close contact with the inner wall of the lower end of the flocculation tank. The scraper ring is located above the scraper and is in close contact with the vertical part of the inner wall of the flocculation tank. The outer sides of both the scraper ring and the scraper are provided with wear-resistant rubber scrapers.

6. The integrated wastewater treatment equipment according to claim 5, characterized in that: The cleaning assembly also includes a positive and negative threaded rod and a guide rod. The positive and negative threaded rod is rotatably connected to the flocculation tank and is threaded to one end of the scraper ring. The guide rod is fixedly connected to the flocculation tank and is slidably connected to the scraper ring.

7. An integrated wastewater treatment device according to claim 6, characterized in that: The reverse drive assembly includes a reverse one-way gear, a reverse transmission ring, a reverse transmission shaft, a reverse inner driven gear, and a reverse outer driven gear. The reverse one-way gear is fixedly mounted on the control shaft. The reverse transmission ring is rotatably mounted on the control shaft and is sleeved on the outside of the reverse one-way gear. The reverse transmission shaft is rotatably mounted on a mounting bracket. The reverse inner driven gear is fixedly mounted on the cathode rod. Intermediate gears that mesh with the reverse transmission ring, the reverse inner driven gear, and the reverse outer driven gear are respectively mounted on the reverse transmission shaft. The moving gear is fixedly installed on the upper end of the forward and reverse threaded rod. The reverse one-way gear has a reverse sliding groove, and a reverse one-way locking block is slidably installed on the reverse sliding groove. The inner side wall of the reverse transmission ring has a reverse one-way locking groove. A reverse support spring is fixedly installed between the reverse sliding groove and the reverse one-way locking block. When the control shaft reverses, the reverse one-way locking groove engages with the reverse one-way locking block, causing the reverse transmission ring to rotate accordingly. When the control shaft rotates forward, the reverse one-way locking block squeezes the reverse support spring out of the reverse one-way locking groove, so that the reverse transmission ring can remain stationary.

8. The integrated wastewater treatment equipment according to claim 1, characterized in that: The electrocoagulation treatment device also includes a drive motor, which is fixedly mounted on a mounting frame, and the drive end of the drive motor is fixedly connected to the control shaft.

9. The integrated wastewater treatment equipment according to claim 1, characterized in that: The housing is also equipped with a water supply pump and a water delivery pump, both of which are electrically connected to the distribution box. A water inlet is provided on one side wall of the flocculation tank. The pumping end of the water supply pump extends to the outside of the housing, and the delivery end of the water supply pump is connected to the water inlet. The pumping end of the water delivery pump is connected to the slag discharge port, and the delivery end of the water delivery pump extends to the inlet of the centrifugal separator. The outlet of the centrifugal separator is connected to the outside of the housing through a pipe.

10. A method for treating wastewater from acrylic glass polishing operations, comprising using an integrated wastewater treatment device as described in any one of claims 1-9, characterized in that, The specific steps are as follows: Start the power distribution box to supply power to the electrocoagulation treatment device, and pass the wastewater from the plexiglass polishing operation into the flocculation tank of the electrocoagulation treatment device so that the wastewater comes into contact with the anode plate and cathode rod in the flocculation tank, and flocculates the impurities in the wastewater through electrode reaction. During the flocculation process, the drive control shaft rotates forward, which in turn drives the anode plate to rotate, and the anode plate drives the water to flow. After flocculation is completed, open the solenoid valve of the slag discharge port to let the flocculated wastewater flow into the centrifugal separation device, start the centrifugal separation device to centrifuge the wastewater, and discharge the filtered water from the centrifugal separation device after separation. When there are many impurities adhering to the inner wall of the flocculation tank, the drive control shaft reverses, and the reverse drive component drives the cleaning component to scrape off the impurities from the inner wall of the flocculation tank. The impurities are then discharged from the slag discharge port.

Images