Reverse osmosis membrane integrated system applied to chemical wastewater treatment

Abstract

The invention provides a reverse osmosis membrane integrated system applied to chemical wastewater treatment, and belongs to the technical field of chemical wastewater treatment.The reverse osmosis membrane integrated system comprises reverse osmosis host equipment, the reverse osmosis host equipment comprises a frame, a high-pressure pump is arranged on the inner wall of the frame, and a reverse osmosis membrane assembly is further arranged on the frame; the reverse osmosis membrane assembly is used for separating salt and organic matter impurities in the chemical wastewater, and pretreatment equipment is further mounted on one side of the frame and is used for pretreating the chemical wastewater before the chemical wastewater enters the reverse osmosis host equipment; the device can be driven by natural impact force generated when chemical wastewater enters the separation tank to operate, large impurities in the chemical wastewater can be efficiently separated, extra power input is not needed, energy consumption and operation cost are reduced, in the impurity separation process, the filter screen can be automatically and intermittently dredged, good permeability of the filter screen is maintained, and the service life of the filter screen is prolonged. The continuous and stable operation of the pretreatment equipment is ensured, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical wastewater treatment, and in particular to a reverse osmosis membrane integrated system applied to chemical wastewater treatment. Background Art

[0002] In chemical wastewater treatment, reverse osmosis is a process opposite to natural osmosis. When a pressure greater than the osmotic pressure is applied to one side of the chemical wastewater, the chemical wastewater will overcome the direction of natural osmosis and flow from the high-concentration wastewater side through the reverse osmosis membrane to the low-concentration side, thereby achieving the separation of impurities such as salt, organic matter, heavy metal ions, etc. in water and wastewater.

[0003] Considering that chemical wastewater contains a large amount of large particle impurities, once these impurities enter the reverse osmosis system and participate in the osmosis process, they will have many adverse effects on the reverse osmosis membrane. In addition to significantly slowing down the filtration speed, it will also have a negative impact on the service life of the reverse osmosis membrane, such as accelerating the aging of the membrane, reducing the desalination rate of the membrane, and even causing physical damage to the membrane, resulting in a decrease in membrane performance, increasing the operating cost and maintenance difficulty of the system. Therefore, the present application provides a reverse osmosis membrane integrated system for chemical wastewater treatment to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a reverse osmosis membrane integrated system for chemical wastewater treatment to solve the problem raised in the above-mentioned background technology that chemical wastewater contains a large amount of large particle impurities. Once these impurities enter the reverse osmosis system and participate in the osmosis process, the filtration speed will be significantly slowed down and the service life of the reverse osmosis membrane will be negatively affected.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A reverse osmosis membrane integrated system for chemical wastewater treatment, comprising a reverse osmosis host device, wherein the reverse osmosis host device comprises a frame, an inner wall of the frame is provided with a high-pressure pump, a reverse osmosis membrane assembly is further provided on the frame, and the reverse osmosis membrane assembly is used to separate salt and organic impurities in the chemical wastewater, and a pre-treatment device is also installed on one side of the frame, and the pre-treatment device is used to pre-treat the chemical wastewater before it enters the reverse osmosis host device; The pre-treatment equipment includes a tank body, which is arranged on one side of the frame, a separation tank is fixedly arranged on the inner wall of the tank body, a first support plate is fixedly arranged on the inner wall of the tank body, the separation tank is fixedly arranged on the first support plate, a filter screen is fixedly arranged on the inner wall of the separation tank, a rotating rod is rotatably arranged on the inner wall of the separation tank, a guide plate is equidistantly fixedly arranged on the outer wall of the rotating rod, a scraper is fixedly arranged on the outer wall of the rotating rod, a second support plate is fixedly arranged on the inner wall of the tank body, a reciprocating screw rod is rotatably arranged on the surface of the second support plate, one end of the reciprocating screw rod away from the second support plate is fixed to the rotating rod, an isolation plate is threadedly connected to the reciprocating screw rod through a threaded hole, a dredging rod is equidistantly fixedly arranged on the surface of the isolation plate, the dredging rod is corresponding to the mesh holes on the filter screen, and a sewage inlet pipe is arranged on the top of the tank body, and the sewage inlet pipe faces the guide plate.

[0006] The cam is provided with a first support plate, and a second support plate is provided on the first support plate to dispose the impurities on the filter screen. The cam comprises a pipe, and the pipe is fixedly provided on the surface of the first support plate. The pipe is connected to the pipe on a side close to the separation tank and is communicated with the separation tank. A rotating shaft is provided on the inner wall of the pipe for rotation. A round stick is fixedly provided on the outer wall of the rotating shaft. Guide bars are fixedly provided on the outer wall of the round stick at equal intervals, and protrusions are fixedly provided on the outer wall of the round stick at equal intervals between the guide bars. A third support plate is fixedly provided on the side of the tank body close to the pipe, a rack is slidingly provided on the inner wall of the third support plate, a spring is fixedly provided on the inner wall of the third support plate, one end of the spring is fixed to the rack, a gear is fixedly provided on one end of the rotating shaft close to the rack, and the gear is meshed with the rack. A collecting box is provided on the side of the tank body close to the pipe, and the collecting box is used to collect impurities discharged from the pipe. The side of the pipe away from the tank body faces the collecting box.

[0007] A connecting pipe is fixedly arranged on the inner wall of the tank body, one end of which is connected to the outer wall of the impurity discharge pipe, drainage holes are equidistantly opened on the inner wall of the impurity discharge pipe, and the drainage holes are connected to the connecting pipe, and one end of the connecting pipe away from the impurity discharge pipe is connected to the separation tank.

[0008] A one-way valve is arranged at one end of the connecting pipe close to the separation tank.

[0009] The bottom of the tank body is connected with a wastewater discharge pipe, and the wastewater discharge pipe is connected with the input end of the high-pressure pump.

[0010] The scraper is made of wear-resistant rubber.

[0011] A control panel for operating the reverse osmosis host device is also installed on the frame.

[0012] An observation window is arranged on the outer side of the tank body.

[0013] The shape of the drainage hole is circular, and the diameter thereof is determined according to the flow characteristics of the liquid in the separation tank and the particle size distribution of the impurities.

[0014] The bottom of the collecting box is provided with an inclined surface, and a slag discharge port is opened at the lowest point.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up the pre-treatment equipment, the natural impact force of the chemical wastewater entering the separation tank can be used to drive the equipment to operate, thereby achieving efficient separation of larger impurities in the chemical wastewater without the need for additional power input, thereby reducing energy consumption and operating costs; In the process of impurity separation, the filter can be automatically and intermittently dredged to maintain the good permeability of the filter, ensuring the continuous and stable operation of the pretreatment equipment and improving work efficiency; And through the pre-treatment equipment, the large particle impurities in the chemical wastewater are effectively intercepted and separated, which significantly reduces the possibility of these impurities entering the reverse osmosis system, thereby avoiding physical damage to the reverse osmosis membrane, delaying the aging process of the membrane, reducing the decline rate of the membrane desalination rate, and extending the service life of the reverse osmosis membrane assembly; The present invention can effectively solve the problem of reduced permeability of the filter due to a large amount of impurities accumulated in the filter by setting up the impurity removal component. By timely removing the impurities on the filter, the filter is ensured to be in a good working state at all times, thereby maintaining the efficient operation of the entire pretreatment link and improving the efficiency and effect of the pretreatment. The round sticks, guide strips and protrusions in the impurity removal assembly cooperate with each other to squeeze and dehydrate the impurities entering the impurity removal pipe, reducing the water content in the impurities and reducing the difficulty and cost of subsequent treatment. At the same time, the dehydrated impurities are collected in a centralized manner through the collection box for unified treatment; The power of chemical wastewater entering the separation tank is used to achieve automatic impurity removal, without the need for additional power equipment, reducing energy consumption and equipment costs. In addition, when impurities block the impurity discharge pipe, the round rod can automatically reverse and pull back the blocked impurities through the coordinated action of springs, racks, gears and other components to avoid blockage of the impurity discharge pipe, ensuring a smooth and stable impurity discharge process and reducing manual intervention and maintenance costs. Through the cooperation of the drainage pipe and the connecting pipe, the squeezed water is discharged back into the separation tank for secondary filtration, realizing the recycling of water resources. This not only reduces the waste of water resources, but also reduces the water consumption of the entire chemical wastewater treatment system, which is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the reverse osmosis membrane integrated system used for chemical wastewater treatment according to the present invention; Figure 2 It is a schematic diagram from another perspective of the reverse osmosis membrane integrated system of the present invention applied to chemical wastewater treatment; Figure 3 It is a schematic diagram of the tank body, sewage inlet pipe and wastewater outlet pipe of the present invention; Figure 4 It is a schematic diagram of the tank body, the separation tank and the first support plate of the present invention; Figure 5 It is a schematic diagram of the sewage inlet pipe, filter screen and guide plate of the present invention; Figure 6 This is a schematic diagram of the separation tank, the impurity discharge pipe and the connecting pipe of the present invention; Figure 7 It is a schematic diagram of the rotating rod, guide piece and scraper of the present invention; Figure 8 It is a schematic diagram of the tank body, the impurity discharge pipe and the collection box of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of point A in the middle; Fig.10 This is a schematic diagram of the sewage inlet pipe, tank body and observation window of the present invention; Fig.11 For the present invention Fig.10 Enlarged view of point B in the middle. Attached photos

[0017] 1. Reverse osmosis main equipment; 101. Frame; 102. High-pressure pump; 103. Reverse osmosis membrane assembly; 2. Pre-treatment equipment; 201. Tank; 202. Separation tank; 203. First support plate; 204. Filter screen; 205. Rotating rod; 206. Guide plate; 207. Scraper; 208. Second support plate; 209. Reciprocating screw rod; 210. Isolation plate; 211. Dredging rod; 212. Sewage inlet pipe; 3. Discharge assembly; 301. Discharge pipe; 302. Rotating shaft; 303. Round stick; 304. Guide strip; 305. Protrusion; 306. Third support plate; 307. Rack; 308. Spring; 309. Gear; 310. Collection box; 4. Connecting pipe; 5. Drain hole; 6. Wastewater discharge pipe; 7. Control panel; 8. Observation window.

[0018] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0019] The following is a detailed description of a reverse osmosis membrane integrated system for chemical wastewater treatment provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0020] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides a reverse osmosis membrane integrated system for chemical wastewater treatment, including a reverse osmosis host device 1, which is a key link in the entire system to achieve separation of salt and organic impurities. The device uses a frame 101 as a supporting structure. The frame 101 not only provides a stable installation foundation for internal components, but also carries the operating architecture of the entire host device. On the inner wall of the frame 101, a high-pressure pump 102 is installed, which provides power support for chemical wastewater to pass through a reverse osmosis membrane assembly 103. Under the action of high pressure, water molecules in the chemical wastewater can overcome the osmotic pressure and pass through the reverse osmosis membrane, while salt and organic impurities are effectively retained, thereby achieving the purpose of separation. The reverse osmosis membrane assembly 103 arranged on the frame 101 is the core of the entire system. It adopts reverse osmosis membrane technology and has extremely high selective permeability. Through the special properties of the semi-permeable membrane, it can accurately separate the salt and organic impurities in the chemical wastewater to produce purified water that meets the requirements.

[0021] In addition, a control panel 7 for controlling the reverse osmosis host device 1 is also installed on the frame 101. The control panel 7 is an important interface for the operator to interact with the reverse osmosis host device 1. It integrates various control buttons, display screens and operation interfaces. The operator can use the control panel 7 to accurately adjust the operating parameters of the high-pressure pump 102, such as pressure, flow, etc., and monitor the operating status of the reverse osmosis membrane assembly 103 in real time, including key indicators such as membrane pressure, temperature, and produced water quality. Through these operations, it is ensured that the reverse osmosis host device 1 can operate stably and efficiently to meet the needs of different chemical wastewater treatment. The specific working principle of the reverse osmosis membrane will not be described in detail here, which is the prior art.

[0022] like Figures 1 to 6Considering that chemical wastewater contains a large amount of large particle impurities, once these impurities enter the reverse osmosis system and participate in the osmosis process, they will have many adverse effects on the reverse osmosis membrane. In addition to significantly slowing down the filtration speed, it will also have a negative impact on the service life of the reverse osmosis membrane, such as accelerating the aging of the membrane, reducing the desalination rate of the membrane, and even causing physical damage to the membrane, resulting in a decrease in membrane performance, increasing the operating cost and maintenance difficulty of the system. Therefore, a pre-treatment device 2 is also installed on one side of the frame 101. The pre-treatment device 2 is used to pre-treat the chemical wastewater before it enters the reverse osmosis host device 1.

[0023] Specifically, the pre-treatment equipment 2 includes a tank body 201, which is a container for accommodating chemical wastewater. An observation window 8 is provided on the outer side of the tank body 201, which provides convenient conditions for operators to observe the treatment of chemical wastewater in the tank body 201 in real time. The separation tank 202 is fixedly arranged on the inner wall of the tank body 201. It achieves efficient separation and treatment of impurities in the chemical wastewater through close cooperation with other components. In order to ensure the stable installation of the separation tank 202, a first support plate 203 is provided on the inner wall of the tank body 201, and the separation tank 202 is fixed on the first support plate 203. A filter screen 204 is fixedly arranged on the inner wall of the separation tank 202. The filter screen 204 is a key component for separating impurities and can effectively intercept large particles of impurities in the chemical wastewater, such as sand, metal chips, fibers, etc. After these impurities are blocked by the filter screen 204, they gradually accumulate on the surface of the screen, thereby achieving preliminary separation from the wastewater.

[0024] On the inner wall of the separation tank 202, a rotating rod 205 is rotatably arranged, and guide pieces 206 are fixedly arranged on its outer wall at equal intervals. When chemical wastewater flows in from the sewage inlet pipe 212 on the top of the tank body 201, the sewage inlet pipe 212 faces the guide piece 206, so that the wastewater can impact the guide piece 206 at a certain angle and speed. Under the impact force of the wastewater, the guide piece 206 drives the rotating rod 205 to rotate together.

[0025] A scraper 207 is also fixed to the outer wall of the rotating rod 205. The scraper 207 is made of wear-resistant rubber material and has good flexibility on its surface. This material property enables the scraper 207 to fit closely to the surface of the filter screen 204 as the rotating rod 205 rotates, effectively scraping off impurities accumulated on the filter screen 204 and preventing impurities from excessively accumulating on the surface of the screen and affecting the filtering effect. At the same time, its flexibility can avoid damage to the filter screen 204 and ensure the service life of the filter screen 204.

[0026] In addition, a second support plate 208 is fixedly provided on the inner wall of the tank body 201, and a reciprocating screw 209 is rotatably provided on the surface of the second support plate 208. One end of the reciprocating screw 209 is fixedly connected to the rotating rod 205. When the rotating rod 205 rotates, the reciprocating screw 209 will be driven to rotate synchronously. The reciprocating screw 209 is threadedly connected to the isolation plate 210 through a threaded hole. As the reciprocating screw 209 rotates, the isolation plate 210 will reciprocate up and down along the axial direction of the screw.

[0027] The surface of the isolation plate 210 is fixedly provided with dredging rods 211 at equal intervals. These dredging rods 211 correspond to the mesh holes on the filter screen 204. When the isolation plate 210 moves up and down, the dredging rods 211 will move closer to or away from the filter screen 204. When the dredging rods 211 come into contact with the mesh holes on the filter screen 204 that are clogged with impurities, the mesh holes will be dredged to ensure that the permeability of the filter screen 204 always remains in good condition.

[0028] A sewage inlet pipe 212 is arranged on the top of the tank body 201, so that when the chemical wastewater enters the separation tank 202, the impact force of the water flow can push the guide plate 206 and the rotating rod 205 to rotate, thereby realizing the automatic operation of the equipment without the need for additional power input. A wastewater discharge pipe 6 is connected to the bottom of the tank body 201, and the wastewater discharge pipe 6 is connected to the input end of the high-pressure pump 102. The wastewater preliminarily treated by the pre-treatment device 2 is transported to the high-pressure pump 102 through the wastewater discharge pipe 6, providing stable water inlet for subsequent reverse osmosis treatment.

[0029] like Figure 1 and Figure 7 As shown, when chemical wastewater flows into the separation tank 202 through the sewage inlet pipe 212, once the wastewater contacts the guide plate 206, it will push the guide plate 206 with its own impact force, and then drive the rotating rod 205 connected thereto to rotate together. At the same time, under the guidance of the guide plate 206, the chemical wastewater flows to the filter screen 204 for filtering operation. As the chemical wastewater continuously pours in, this driving force continues to exist, so that the guide plate 206 and the rotating rod 205 remain in a rotating state. During the rotation process, the rotating rod 205 drives the scraper 207 fixed on its outer wall to continuously rotate along the surface of the filter screen 204. This rotation process can not only prevent impurities from excessively accumulating on the filter screen 204.

[0030] The rotation of the rotating rod 205 will also drive the reciprocating screw 209 connected to it to rotate synchronously. Since the isolation plate 210 is threadedly connected to the reciprocating screw 209 through a threaded hole, when the reciprocating screw 209 rotates, the isolation plate 210 will slide up and down along the axial direction of the screw. During the continuous rotation of the reciprocating screw 209, the isolation plate 210 carries the dredging rod 211 fixed on its surface and continuously slides along the screw toward the filter screen 204. When the dredging rod 211 contacts the mesh holes on the filter screen 204, the mesh holes blocked by impurities will be dredged.

[0031] It should be noted here that the length of the dredging rod 211 is designed to be the same as the depth of the mesh, which ensures that the dredging rod 211 will not exceed the mesh and contact the scraper 207 when dredging the mesh, thereby avoiding possible component interference problems, and effectively preventing the dredged impurities from flowing out of the mesh and entering the already filtered wastewater, thereby ensuring the stability of the filtering effect. The natural impact force generated when the chemical wastewater enters the separation tank 202 can be used to achieve efficient separation of larger impurities in the chemical wastewater without the need for additional power input. At the same time, during the impurity separation process, the filter screen 204 can be automatically and intermittently dredged, greatly improving the working efficiency and stability of the pretreatment equipment.

[0032] like Figure 1 and Fig.11 As shown, further, considering that the filter screen 204 is prone to a large amount of impurities accumulation during the long-term treatment of chemical wastewater, which will significantly reduce the permeability of the filter screen 204 and affect the efficiency and effect of the entire pretreatment link, an impurity removal component 3 for discharging impurities on the filter screen 204 is also provided on one side of the separation tank 202.

[0033] Specifically, the impurity removal component 3 includes a impurity removal pipe 301, which is fixed on the surface of the first support plate 203. The impurity removal pipe 301 is connected to the separation tank 202 on one side close to the separation tank 202, providing a smooth discharge channel for impurities on the filter screen 204. After a series of treatments, the impurities can enter the impurity removal pipe 301 through this connecting port for subsequent treatment.

[0034] The inner wall of the impurity discharge pipe 301 is rotatably provided with a rotating shaft 302, and a round stick 303 is fixedly provided on the outer wall of the rotating shaft 302. The round stick 303 is a component for extruding and dehydrating impurities. The outer wall of the round stick 303 is equidistantly fixed with guide bars 304. When the round stick 303 rotates, these guide bars 304 can guide the moving direction of the impurities to ensure that the impurities flow along a predetermined path in the impurity discharge pipe 301, and also provide a certain auxiliary effect for the extrusion of impurities. In addition, on the outer wall of the round stick 303, protrusions 305 are also equidistantly fixed between the guide bars 304. These protrusions 305 further enhance the extrusion ability of the round stick 303 on impurities. During the rotation of the round stick 303, the protrusions 305 work together with the guide bars 304 to more effectively extrude and dehydrate the impurities, reduce the water content in the impurities, and improve the quality of impurity treatment.

[0035] A third support plate 306 is fixedly provided on one side of the tank body 201 close to the impurity discharge pipe 301, and a rack 307 is slidably provided on the inner wall of the third support plate 306. The rack 307 can slide on the inner wall of the third support plate 306 to realize linkage with other components. A spring 308 is also fixedly provided on the inner wall of the third support plate 306, and one end of the spring 308 is tightly fixed to the rack 307, and its function is to provide necessary elastic force for the reset of the rack 307. When the system operates normally, the spring 308 is in a certain tension or compression state and stores elastic potential energy; when the system encounters abnormal conditions such as impurity blockage, the spring 308 can release or absorb energy to help the rack 307 complete the corresponding action to ensure the stable operation of the system. A gear 309 is fixedly provided on one end of the rotating shaft 302 close to the rack 307, and the gear 309 and the rack 307 are meshed and connected with each other. Through the transmission mode of the gear 309 and the rack 307, the rotation of the rotating shaft 302 can be converted into the linear motion of the rack 307.

[0036] A collecting box 310 is also provided on the side of the tank body 201 close to the impurity discharge pipe 301. The main function of the collecting box 310 is to collect impurities discharged from the impurity discharge pipe 301. The side of the impurity discharge pipe 301 away from the tank body 201 is deliberately oriented towards the collecting box 310 to ensure that the processed impurities can accurately fall into the collecting box 310. The bottom of the collecting box 310 is provided with an inclined surface, and a slag discharge port is opened at the bottom of the collecting box 310. The design of the inclined surface allows the impurities in the collecting box 310 to naturally gather towards the slag discharge port under the action of gravity, thereby facilitating the centralized discharge of impurities. The setting of the slag discharge port provides convenient conditions for regularly cleaning the impurities accumulated in the collecting box 310. By opening the slag discharge port, the staff can easily discharge the impurities in the collecting box 310 to avoid excessive accumulation of impurities in the collecting box 310, thereby affecting the impurity discharge effect, and ensuring that the entire impurity discharge component 3 always maintains an efficient operating state.

[0037] In the pretreatment stage of chemical wastewater treatment, the power generated when the chemical wastewater enters the separation tank 202 is used to achieve effective separation of impurities in the wastewater. After the wastewater enters the separation tank 202, a series of devices are driven to work together. In the process of the filter net 204 intercepting impurities, in order to prevent impurities from clogging and affecting the filtering effect, the dredging rod 211 will regularly dredge the impurities in the filter net 204. As the scraper 207 rotates, the impurities dredged and the impurities originally intercepted on the filter net 204 will rotate together under the drive of the scraper 207.

[0038] The size of the guide blade 206 gradually decreases from the side of the scraper 207 to the side of the sewage inlet pipe 212, so that the scraper 207 can drive the impurities on the filter screen 204 to rotate along with the guide blade 206. When the impurities are driven by the guide blade 206 and rotate along the inner wall of the separation tank 202 until they come into contact with the impurity discharge pipe 301, the guide blade 206 will smoothly push the impurities into the impurity discharge pipe 301.

[0039] As the guide piece 206 continuously pushes the impurities into the impurity discharge pipe 301, the impurities will slide forward along the inner wall of the impurity discharge pipe 301. When the impurities slide and contact the guide strip 304, the impurities will push the guide strip 304 to rotate under the force of the guide piece 206 pushing the impurities, thereby driving the round stick 303 connected thereto to rotate. When the round stick 303 rotates, the guide strip 304 and the protrusion 305 on its surface will contact the impurities to extrude and dehydrate the impurities. When the round stick 303 rotates, it will drive the rotating rod 205 connected thereto to rotate. During the rotation of the rotating rod 205, it will drive the gear 309 to rotate synchronously. The rotation of the gear 309 will move the rack 307, so that the rack 307 slides forward along the inner wall of the third support plate 306. In this process, the movement of the rack 307 will stretch the spring 308. When the impurities are squeezed by the round stick 303, blockage will occur. In this case, although the guide sheet 206 continues to squeeze the impurities into the discharge pipe 301, the impurities are blocked and cannot pass through the round stick 303. At this time, the round stick 303 stops rotating. Accordingly, the gear 309 on the rotating shaft 302 no longer continuously drives the rack 307. At this time, the spring 308 in the stretched state will restore its deformation, pulling the rack 307 to slide along the inner wall of the third support plate 306 toward the side of the spring 308. During the resetting process of the rack 307, the gear 309 will be driven in the opposite direction to rotate, thereby reversing the round stick 303. The reversal of the round stick 303 will pull back the blocked impurities to avoid excessive accumulation of impurities causing blockage of the discharge pipe 301, thereby ensuring a smooth discharge process. After a series of treatments, the impurities squeezed and dehydrated in the discharge pipe 301 will eventually be discharged into the collection box 310 along the discharge pipe 301, completing the entire impurity separation and collection process.

[0040] like Figure 4 and Fig.11 As shown, further, considering that the squeezed impurities still contain a certain amount of moisture, it is necessary to deal with the moisture accordingly, so a connecting pipe 4 is fixedly provided on the inner wall of the tank body 201, one end of the connecting pipe 4 is connected to the outer wall of the impurity removal pipe 301, and a one-way valve is provided at one end of the connecting pipe 4 close to the separation tank 202. The setting of the one-way valve allows the moisture in the connecting pipe 4 to only flow into the separation tank 202, while the water in the separation tank 202 cannot enter the connecting pipe 4, and drainage holes 5 are equidistantly provided on the inner wall of the impurity removal pipe 301, and the drainage holes 5 are connected to the connecting pipe 4, the shape of the drainage hole 5 is circular, and the diameter size is based on the flow characteristics of the liquid in the separation tank 202 and the particle size distribution of the impurities, while ensuring the smooth circulation of the liquid, effectively preventing impurities from clogging the drainage hole 5, and the end of the connecting pipe 4 away from the impurity removal pipe 301 is connected to the separation tank 202.

[0041] During the impurity treatment process, the round rod 303 drives the guide strips 304 and protrusions 305 on its surface to squeeze and dehydrate the impurities entering the impurity discharge pipe 301. During this process, the squeezed water will be collected through the connecting pipe 4. Subsequently, the water is discharged into the separation tank 202 again through the connecting pipe 4 for secondary filtration. In this way, the water content in the impurities can be effectively reduced and the effect of impurity treatment can be improved.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A reverse osmosis membrane integrated system for chemical wastewater treatment, comprising: A reverse osmosis host device (1), the reverse osmosis host device comprising a frame (101), a high-pressure pump (102) being arranged on the inner wall of the frame (101), a reverse osmosis membrane assembly (103) being arranged on the frame (101), the reverse osmosis membrane assembly (103) being used to separate salt and organic impurities in chemical wastewater, and characterized in that a pre-treatment device (2) is also installed on one side of the frame (101), the pre-treatment device (2) being used to pre-treat the chemical wastewater before it enters the reverse osmosis host device (1); The pre-treatment device (2) comprises a tank body (201), the tank body (201) being arranged on one side of a frame (101), a separation tank (202) being fixedly arranged on the inner wall of the tank body (201), a first support plate (203) being fixedly arranged on the inner wall of the tank body (201), the separation tank (202) being fixedly arranged on the first support plate (203), a filter screen (204) being fixedly arranged on the inner wall of the separation tank (202), a rotating rod (205) being rotatably arranged on the inner wall of the separation tank (202), guide plates (206) being fixedly arranged at equal intervals on the outer wall of the rotating rod (205), a scraper (207) being fixedly arranged on the outer wall of the rotating rod (205), and the tank body (201) being fixedly arranged on the inner wall of the separation tank (202). A second support plate (208) is fixedly provided on the inner wall of the tank body (201); a reciprocating screw rod (209) is rotatably provided on the surface of the second support plate (208); one end of the reciprocating screw rod (209) away from the second support plate (208) is fixed to the rotating rod (205); an isolation plate (210) is threadedly connected to the reciprocating screw rod (209) via a threaded hole; dredging rods (211) are fixedly provided at equal intervals on the surface of the isolation plate (210); the dredging rods (211) correspond to the mesh holes on the filter screen (204); a sewage inlet pipe (212) is provided on the top of the tank body (201); the sewage inlet pipe (212) faces the guide plate (206).

2. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 1, characterized in that: A waste removal component (3) for removing impurities from the filter screen (204) is further provided on one side of the separation tank (202). The waste removal component (3) comprises a waste removal pipe (301). The waste removal pipe (301) is fixedly arranged on the surface of the first support plate (203). The waste removal pipe (301) is connected to the separation tank (202) on a side close to the separation tank (202). A rotating shaft (302) is rotatably arranged on the inner wall of the waste removal pipe (301). A round stick (303) is fixedly arranged on the outer wall of the rotating shaft (302). Guide bars (304) are fixedly arranged on the outer wall of the round stick (303) at equal intervals. Protrusions (305) are fixedly arranged on the outer wall of the round stick (303) between the guide bars (304) at equal intervals. The tank body (201) is close to the outer wall of the separation tank (201). A third support plate (306) is fixedly provided on one side near the impurity discharge pipe (301), a rack (307) is slidably provided on the inner wall of the third support plate (306), a spring (308) is fixedly provided on the inner wall of the third support plate (306), one end of the spring (308) is fixed to the rack (307), a gear (309) is fixedly provided on one end of the rotating shaft (302) near the rack (307), the gear (309) is meshingly connected to the rack (307), a collecting box (310) is provided on one side of the tank body (201) near the impurity discharge pipe (301), the collecting box (310) is used to collect impurities discharged from the impurity discharge pipe (301), and a side of the impurity discharge pipe (301) away from the tank body (201) faces the collecting box (310).

3. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 2, characterized in that: A connecting pipe (4) is fixedly provided on the inner wall of the tank body (201), one end of the connecting pipe (4) is connected to the outer wall of the impurity discharge pipe (301), drainage holes (5) are equidistantly provided on the inner wall of the impurity discharge pipe (301), and the drainage holes (5) are connected to the connecting pipe (4), and one end of the connecting pipe (4) away from the impurity discharge pipe (301) is connected to the separation tank (202).

4. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 3, characterized in that: A one-way valve is provided at one end of the connecting pipe (4) close to the separation tank (202).

5. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 1, characterized in that: The bottom of the tank body (201) is connected to a wastewater discharge pipe (6), and the wastewater discharge pipe (6) is connected to the input end of the high-pressure pump (102).

6. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 1, characterized in that: The scraper (207) is made of wear-resistant rubber.

7. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 1, characterized in that: A control panel (7) for controlling the reverse osmosis host device (1) is also mounted on the frame (101).

8. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 1, characterized in that: An observation window (8) is provided on the outer side of the tank body (201).

9. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 3, characterized in that: The drainage hole (5) is circular in shape, and its diameter is determined according to the flow characteristics of the liquid in the separation tank (202) and the particle size distribution of the impurities.

10. The reverse osmosis membrane integrated system for chemical wastewater treatment according to claim 2, characterized in that: The bottom of the collecting box (310) is provided with an inclined surface, and a slag discharge port is opened at the lowest point.

Images