A high-salinity wastewater reverse osmosis desalination recovery treatment device and recovery treatment method

Abstract

The application discloses a kind of high-salinity wastewater reverse osmosis desalination recovery processing equipment and recovery processing method, equipment includes shell, is arranged in the reverse osmosis component of shell interior and is arranged in the backwashing component of shell interior;Reverse osmosis component includes the water inlet head and end cap of joint in shell, is arranged between the cylinder of water inlet head and end cap, is set in the reverse osmosis membrane of cylinder and is set in the water outlet pipe of reverse osmosis membrane interior;Backwashing component includes the conversion pipe of joint in each water outlet pipe, with the backflush water inlet pipe of cylinder connection and is arranged in the electric push rod of shell interior and provides power for conversion pipe;The equipment of the application is pretreated to high-salinity wastewater, then carries out reverse osmosis treatment, realizes the depth desalination treatment of high-salinity wastewater, by evaporation crystallization treatment to reverse osmosis concentrated water, realizes the recycling of salt in high-salinity wastewater.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial wastewater treatment, in particular to a high-salinity wastewater reverse osmosis desalination recovery treatment equipment and a recovery treatment method. BACKGROUND

[0002] High-salinity wastewater is wastewater generated from various industrial production processes, mainly mixed from resin regeneration wastewater and extraction wastewater, with a total salt content of 1% or more. With the rapid development of industrialization, the treatment of a large amount of high-salinity wastewater has become a serious environmental problem.

[0003] The high-salinity wastewater reverse osmosis desalination recovery treatment equipment in the prior art can only perform reverse osmosis treatment on high-salinity wastewater during use, the high-concentration brine yield at the reverse osmosis site is large, and secondary utilization is difficult. Moreover, the membrane assembly is inconvenient to clean and replace, the service life of the membrane assembly is short, and the equipment needs to be stopped for replacement and cleaning of the membrane assembly, thereby affecting the treatment efficiency of the equipment. SUMMARY

[0004] In view of the above technical problems, the present application provides a high-salinity wastewater reverse osmosis desalination recovery treatment equipment and a recovery treatment method.

[0005] The technical scheme of the present application is as follows: a high-salinity wastewater reverse osmosis desalination recovery treatment equipment, comprising a shell arranged on a base, a reverse osmosis assembly arranged in the shell, and a backwashing assembly arranged in the shell.

[0006] The reverse osmosis assembly comprises a water inlet head, an end cover, a cylinder arranged between the water inlet head and the end cover, a reverse osmosis membrane sleeved in the cylinder, and a water outlet pipe sleeved in the reverse osmosis membrane; the end cover is provided at the bottom end with a concentrated water pipe; the side wall of the water outlet pipe is provided with a through groove;

[0007] The backwashing assembly comprises a conversion pipe rotatably clamped in each water outlet pipe, a backwashing water inlet pipe connected with each cylinder, and an electric push rod corresponding to each conversion pipe; each conversion pipe is provided with a connecting gear, and the side wall of each conversion pipe is provided with a through hole capable of being communicated with the through groove; each conversion pipe is sleeved with a rotary disc located in the corresponding position inside the end cover, the rotary disc is provided with a butt joint groove, and the end cover is provided with a slot capable of being communicated with the butt joint groove; each connecting gear is meshingly connected with a toothed plate; the toothed plate is connected with the electric push rod; the side wall of the shell is provided at the lower end with a backwashing water outlet pipe.

[0008] Further, the reverse osmosis assembly is provided with a plurality of groups, each group of reverse osmosis assemblies is provided with a plurality of reverse osmosis assemblies; a partition baffle is arranged between adjacent two groups of reverse osmosis assemblies in the shell; the number of backwashing assemblies corresponds to the number of reverse osmosis assemblies; the top end of the shell is provided with a water inlet adjusting assembly for injecting water into the shell;

[0009] The device has the advantages that: by setting multiple groups of reverse osmosis components, when one group of reverse osmosis components needs to be backwashed due to blockage, another group of reverse osmosis components can work normally, thereby improving the working efficiency of the device;

[0010] Further, the water inlet adjusting assembly comprises a water inlet tank slidingly connected to the top end of the shell, a booster pump arranged on the base and connected to the water inlet tank, and a switching motor arranged at the top end of the shell and providing power for the water inlet tank; the bottom end of the water inlet tank is provided with a connecting head capable of being communicated with the water inlet groove; the output end of the switching motor is provided with a switching lead screw connected to the water inlet tank;

[0011] The device has the advantages that: the switching motor drives the switching lead screw to rotate, so that the water inlet tank moves at the top end of the shell, and the connecting head on the water inlet tank opens one of the movable baffles, thereby realizing the communication between the water inlet tank and the water inlet groove.

[0012] Further, the device further comprises a filtering assembly arranged on the base; the filtering assembly comprises a filtering tank and a filtering plate arranged in the filtering tank; the top end of the filtering tank is provided with a water inlet pipe, the sidewall of the filtering tank is provided with a sludge pipe at a position corresponding to the filtering plate, and the lower end of the sidewall of the filtering tank is connected to the input end of the booster pump through a conduit;

[0013] The device has the advantages that: the filtering plate is used for filtering and pretreating the high-salinity wastewater, thereby reducing the risk of blockage of the reverse osmosis components, prolonging the service life of the reverse osmosis components, and reducing the treatment cost of the high-salinity wastewater.

[0014] Further, the upper end of the inside of the filtering tank is provided with a hinged seat through a pull rod, a plurality of sector plates are hingedly arranged at equal intervals around the hinged seat, the lower bottom surface of each sector plate is slidingly connected to a push rod penetrating through the filtering plate through a sliding beam, and the upper end surface of each sector plate is provided with a pull spring connected to the inner top of the filtering tank; the inside of the filtering tank and below the filtering plate are provided with a butt joint disc connected to each push rod, and the upper end surface of the butt joint disc is provided with a threaded rod penetrating through the filtering plate; a threaded sleeve rotatingly connected to the filtering plate is threadedly connected to the threaded rod, and a plurality of scraping plates abutting against the upper end surface of the filtering plate are arranged at equal intervals around the threaded sleeve;

[0015] The device has the advantages that: when the high-salinity wastewater enters the filtering tank through the water inlet pipe, the water flow strikes each sector plate, the push rod connected to each sector plate moves up and down along the filtering plate under the action of the pull spring, at this time, the butt joint disc pulls the threaded rod to move on the filtering plate, so that the threaded sleeve drives each scraping plate to rotate on the upper end surface of the filtering plate, thereby cleaning the pollutants on the filtering plate.

[0016] Further, the filter plate is slidably connected with the inner wall of the filter box through a buffer rod, a buffer spring is sleeved on the buffer rod and located at the upper and lower ends of the filter plate; an auxiliary gear is rotatably connected with the lower bottom surface of the filter plate and corresponds to each push rod; a rack is arranged on each push rod and is meshed with the auxiliary gear at the corresponding position; and a vibration cam is arranged at the both ends of each shaft and abuts against the lower bottom surface of the filter plate.

[0017] Description: During the up-and-down movement of the push rod, the rack drives the auxiliary gear and the shaft to rotate, and the vibration cam continuously strikes the lower bottom surface of the filter plate, so that the pollutants in the filter holes of the filter plate are conveniently removed.

[0018] Further, the evaporation assembly is arranged on the base; the evaporation assembly comprises an evaporation tank connected with the shell, an evaporation seat arranged at the inner bottom of the evaporation tank and a first heating plate arranged at the inner bottom of the evaporation tank and located at the lower end of the evaporation seat; a steam recovery pipe is arranged at the top end of the evaporation tank; and a recovery door is movably hinged on the side wall of the evaporation tank.

[0019] Description: The concentrated water treated by reverse osmosis is introduced into the evaporation tank through the conveying pipe, the evaporation seat is heated by the first heating plate, the concentrated water is subjected to evaporation and crystallization treatment by the evaporation seat, the water vapor generated in the evaporation process is discharged from the evaporation tank through the steam recovery pipe, and finally the crystallized salt is recovered through the recovery door, so that the resource utilization of high-salinity wastewater can be realized.

[0020] Further, a flow guide spiral is sleeved in the evaporation tank, and a second heating plate is arranged at the lower bottom surface of the flow guide spiral.

[0021] Description: After the concentrated water is introduced into the evaporation tank, it falls along the inner wall of the evaporation tank under the action of the flow guide spiral, at this time, the flow guide spiral is heated by the second heating plate, so that the concentrated water is subjected to primary evaporation during the falling process, which is beneficial to improve the evaporation efficiency of the concentrated water.

[0022] The application also provides a high-salinity wastewater reverse osmosis desalination and recovery treatment method based on the above-mentioned high-salinity wastewater reverse osmosis desalination and recovery treatment equipment, which comprises the following steps:

[0023] S1, connecting the electric push rod with the external power supply;

[0024] S2, introducing the high-salinity wastewater into the shell, the high-salinity wastewater is introduced into the cylinder, the filtered water treated by the reverse osmosis membrane is introduced into the water outlet pipe through the through slot on the water outlet pipe, and finally discharged from the shell through the conversion pipe, and the reverse osmosis concentrated water is discharged from the shell;

[0025] S3, when the reverse osmosis clean water flow is reduced, stop the high salt wastewater into the shell inside, and use the electric push rod to push the tooth plate to move, the tooth plate moves in the process of driving the connecting gear and the conversion pipe rotation, so that the through hole on the conversion pipe and the through slot on the water outlet pipe are staggered, and the butt joint groove on the rotating disc and the butt joint groove on the end cover are through; finally, through the backflushing water inlet pipe, flush water is injected into the cylinder body, and the surface of the reverse osmosis membrane is flushed, and the flushing wastewater is discharged from the shell through the backflushing water outlet pipe.

[0026] Compared with the prior art, the beneficial effects of the present application are reflected in the following points:

[0027] Firstly, the device structure of the present application is reasonable, by setting the backflushing assembly in the reverse osmosis assembly, the reverse osmosis assembly can be cleaned regularly, and the use reliability of the reverse osmosis assembly is effectively improved; at the same time, the device of the present application includes multiple reverse osmosis assemblies, so that the device of the present application can perform backflushing operation without stopping, and the processing efficiency of the device for high salt wastewater is improved;

[0028] Secondly, the present application filters the high salt wastewater before reverse osmosis treatment, effectively reduces the load of the reverse osmosis assembly, and also reduces the risk of membrane pollution, ensures the long-term and efficient operation of the device, and improves the economic benefit; at the same time, the filtering assembly of the present application can be automatically cleaned without external power, ensuring the filtering effect of the high salt wastewater;

[0029] Thirdly, the present application uses the evaporation assembly to evaporate and crystallize the reverse osmosis concentrated water, which is convenient for recycling the salt in the high salt wastewater, and also solves the environmental pollution problem caused by high salt wastewater. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the longitudinal section view of the device of the present application;

[0031] Figure 2 is the front view of the device of the present application;

[0032] Figure 3 is the distribution diagram of the reverse osmosis assembly in the shell of the present application;

[0033] Figure 4 is the connection schematic diagram of the end cover and the cylinder body of the present application;

[0034] Figure 5 is the connection schematic diagram of the water inlet tank and the shell of the present application;

[0035] Figure 6 is the connection schematic diagram of the connecting gear and the tooth plate of the present application;

[0036] Figure 7is a structural schematic diagram of the filter assembly of the present application;

[0037] Figure 8 is a distribution diagram of the fan-shaped plates inside the filter box of the present application;

[0038] Figure 9 is a schematic diagram of the connection of the auxiliary gear and the rack of the present application;

[0039] Figure 10 is a schematic diagram of the connection of the flow guide spiral and the evaporation tank of the present application;

[0040] Wherein, 1 - shell, 10 - water inlet groove, 11 - movable baffle, 12 - mounting bracket, 13 - partition, 14 - partition baffle, 2 - reverse osmosis assembly, 20 - water inlet head, 21 - end cover, 22 - cylinder, 23 - reverse osmosis membrane, 24 - water outlet pipe, 240 - through groove, 25 - concentrated water pipe, 26 - conveying pipe, 3 - water inlet adjusting assembly, 30 - water inlet tank, 300 - connector, 31 - booster pump, 32 - switching motor, 320 - switching lead screw, 4 - backwashing assembly, 40 - conversion pipe, 41 - backwashing water inlet pipe, 42 - electric push rod, 43 - connecting gear, 44 - rotating disc, 45 - toothed plate, 46 - backwashing water outlet pipe, 5 - filter assembly, 50 - filter box, 51 - filter plate, 510 - buffer rod, 511 - buffer spring, 52 - hinged seat, 53 - fan-shaped plate, 530 - sliding beam, 531 - tension spring, 54 - push rod, 540 - rack, 55 - butt joint disc, 56 - threaded rod, 560 - threaded sleeve, 57 - scraper, 58 - shaft, 580 - auxiliary gear, 581 - vibrating cam, 6 - evaporation assembly, 60 - evaporation tank, 600 - recovery door, 61 - evaporation seat, 62 - first heating plate, 63 - flow guide spiral, 64 - second heating plate. DETAILED DESCRIPTION

[0041] Example 1

[0042] As Figure 1 , 3 , 5 shows a high-salinity wastewater reverse osmosis desalination and recovery treatment equipment, comprising a shell 1 arranged on a base, a reverse osmosis assembly 2 arranged inside the shell 1, and a backwashing assembly 4 arranged inside the shell 1; a water inlet groove 10 is arranged at the upper end of the shell 1, a movable baffle 11 is arranged inside the water inlet groove 10, a reset spring is arranged at the connection between the movable baffle 11 and the shell 1; a mounting bracket 12 is arranged at the upper end inside the outer shell 1 and corresponds to the position of the movable baffle 11, and a partition 13 is arranged at the lower end inside the outer shell 1;

[0043] As Figure 1 , 2As shown in Figure 4, there are three reverse osmosis components 2, which are equidistantly distributed between the mounting bracket 12 and the partition plate 13. Each reverse osmosis component 2 includes an inlet head 20 that is movably snapped onto the bottom surface of the mounting bracket 12, an end cap 21 that is snapped onto the partition plate 13, a cylinder 22 disposed between the inlet head 20 and the end cap 21, a reverse osmosis membrane 23 sleeved inside the cylinder 22, and an outlet pipe 24 sleeved inside the reverse osmosis membrane 23. A concentrate pipe 25 penetrating the partition plate 13 is provided at the bottom end of the end cap 21. The top end of the outlet pipe 24 is closed, and the bottom end penetrates the end cap 21 and the partition plate 13. A through groove 240 is provided on the side wall of the outlet pipe 24. A delivery pipe 26 connected to each concentrate pipe 25 is provided on the shell 1.

[0044] like Figure 1 , 2 As shown in Figures 4 and 6, the backwash assembly 4 includes a conversion pipe 40 that is rotatably engaged inside each outlet pipe 24 and passes through the partition 13, a backwash inlet pipe 41 that passes through the housing 1 and is connected to each cylinder 22, and an electric push rod 42 that is located on the lower bottom surface of the partition 13 and corresponds to the position of each conversion pipe 40. Each conversion pipe 40 is provided with a connecting gear 43, and each conversion pipe 40 has a through hole on its side wall that can communicate with the through groove 240. Each conversion pipe 40 is fitted with a turntable 44 located inside the end cap 21 at the corresponding position. The turntable 44 is provided with a docking groove, and the end cap 21 is provided with a slot that can communicate with the docking groove. A toothed plate 45 that meshes with each connecting gear 43 is slidably engaged on the lower bottom surface of the partition 13. The toothed plate 45 is connected to the electric push rod 42. A backwash outlet pipe 46 is provided at the lower end of the side wall of the housing 1.

[0045] Example 2

[0046] This embodiment describes a method for treating high-salinity wastewater by reverse osmosis, based on a high-salinity wastewater reverse osmosis desalination and recovery device according to Embodiment 1, including the following steps:

[0047] S1. Connect the electric push rod 42 to an external power source;

[0048] S2. High-salt wastewater is introduced into the shell 1 through the inlet trough 10 on the shell 1. The high-salt wastewater enters the shell 22 through each inlet head 20. The clean water after being filtered by the reverse osmosis membrane 23 enters the shell 24 through the through groove 240 on the outlet pipe 24 and is finally discharged from the shell 1 through the conversion pipe 40. The reverse osmosis concentrate is discharged from the shell 1 through the concentrate pipe 25 and the delivery pipe 26.

[0049] S3, when the reverse osmosis clean water flow is reduced, stop the high salt wastewater into the shell 1 inside, and use electric push rod 42 to push the tooth plate 45 along the partition plate 13, the tooth plate 45 moves in the process of driving the connecting gear 43 and the conversion pipe 40 rotation, so that the through hole on the conversion pipe 40 and the through slot 240 on the water outlet pipe 24 staggered, while the rotary plate 44 on the butt joint groove and the butt joint groove on the end cover 21 through; Finally through the backflush water inlet pipe 41 to the cylinder 22 inside injection flushing water, flushing the surface of reverse osmosis membrane 23 contaminants, flushing wastewater through the backflush water outlet pipe 46 discharge shell 1.

[0050] Example 3

[0051] The difference between this embodiment and example 1 is:

[0052] As shown in Figure 1 、 3 , 5, the reverse osmosis assembly 2 is provided with 3 groups; the shell 1 inside and between the two adjacent groups of reverse osmosis assembly 2 is provided with partition baffle 14; the backflushing assembly 4, the number of water inlet groove 10 and the number of reverse osmosis assembly 2 corresponding consistent; the shell 1 top end is provided with water inlet adjusting assembly 3 for injecting water into each water inlet groove 10; the water inlet adjusting assembly 3 includes slidingly connected to the top end of the shell 1 water inlet tank 30, the booster pump 31 provided on the base and connected with the water inlet tank 30 and the switching motor 32 provided on the top of the shell 1 and providing power for the water inlet tank 30; the bottom end of the water inlet tank 30 is provided with a connecting head 300 which can be communicated with the water inlet groove 10; the output end of the switching motor 32 is provided with a switching lead screw 320 connected with the water inlet tank 30.

[0053] Example 4

[0054] This embodiment describes a kind of high-salinity wastewater reverse osmosis desalination recovery processing method, based on the high-salinity wastewater reverse osmosis desalination recovery processing equipment of example 3, and the difference from example 2 is:

[0055] In step S1, the booster pump 31 and the switching motor 32 are connected with external power supply;

[0056] In step S2, the high-salinity wastewater is pumped into the water inlet tank 30 by the booster pump 31, so that the high-salinity wastewater in the water inlet tank 30 enters one of the reverse osmosis assemblies 2 through the connecting head 300;

[0057] In step S3, when the reverse osmosis clean water flow is reduced, the switching motor 32 drives the switching lead screw 320 to rotate, so that the water inlet tank 30 moves at the top end of the shell 1, and the connecting head 300 on the water inlet tank 30 pushes open another movable baffle 11, so that the water inlet tank 300 is communicated with another water inlet groove 10; the other group of reverse osmosis assemblies 2 is used to perform reverse osmosis treatment on the high-salinity wastewater.

[0058] Embodiment 5

[0059] The difference between this embodiment and embodiment 3 is that:

[0060] As shown in Figure 1 , 7 , 8, further comprising a filter assembly 5 arranged on the base; the filter assembly 5 comprises a filter box 50 and a filter plate 51 arranged inside the filter box 50; the filter box 50 is provided with a water inlet pipe at the top end, and a sludge pipe is arranged on the side wall and corresponds to the position of the filter plate 51; the lower end of the side wall of the filter box 50 is connected with the input end of the booster pump 31 through a conduit; a hinge seat 52 is arranged at the upper end inside the filter box 50 through a pull rod, and six sector plates 53 are hingedly arranged at the hinge seat 52 at equal intervals in the circumferential direction; the lower bottom surface of each sector plate 53 is slidably connected with a push rod 54 penetrating through the filter plate 51 through a sliding beam 530; the upper end surface of each sector plate 53 is provided with a pull spring 531 connected with the inner top of the filter box 50; a butt joint disc 55 connected with each push rod 54 is arranged below the filter plate 51 inside the filter box 50; the upper end surface of the butt joint disc 55 is provided with a threaded rod 56 penetrating through the filter plate 51; a threaded sleeve 560 rotationally connected with the filter plate 51 is threadedly connected on the threaded rod 56; and eight scraping plates 57 abutting against the upper end surface of the filter plate 51 are arranged at equal intervals in the circumferential direction of the threaded sleeve 560.

[0061] Embodiment 6

[0062] This embodiment describes a high-salinity wastewater reverse osmosis desalination and recovery treatment method, which is based on the high-salinity wastewater reverse osmosis desalination and recovery treatment equipment of embodiment 5, and differs from embodiment 4 in that:

[0063] Before step S1, the high-salinity wastewater is introduced into the filter box 5 through the water inlet pipe, and the filter plate 51 is used for filtering and pretreating the high-salinity wastewater; when the high-salinity wastewater enters the filter box 50 through the water inlet pipe, the water flow strikes each sector plate 53, and the push rod 54 connected with each sector plate 53 moves up and down along the filter plate 51 under the action of the pull spring 531; at this time, the butt joint disc 55 pulls the threaded rod 56 to move on the filter plate 51, so that the threaded sleeve 560 drives each scraping plate 57 to rotate on the upper end surface of the filter plate 51, thereby cleaning the pollutants on the filter plate 51; and the filtered pollutants are discharged through the sludge pipe.

[0064] Embodiment 7

[0065] The difference between this embodiment and embodiment 5 is that:

[0066] As shown in Figure 7 , 9As shown, the filter plate 51 is slidably engaged with the inner wall of the filter box 50 via a buffer rod 510. Buffer springs 511 are sleeved on the buffer rod 510 at the upper and lower ends of the filter plate 51. Auxiliary gears 580 are rotatably engaged with the bottom surface of the filter plate 51 at positions corresponding to the push rods 54 via shafts 58. Each push rod 54 is provided with a rack 540 that meshes with the auxiliary gear 580 at the corresponding position. Vibration cams 581 that abut against the bottom surface of the filter plate 51 are provided at both ends of each shaft 58.

[0067] Example 8

[0068] This embodiment describes a reverse osmosis desalination and recovery treatment method for high-salinity wastewater, based on a high-salinity wastewater reverse osmosis desalination and recovery treatment device in Embodiment 7, but differing from Embodiment 6 in that:

[0069] Before step S1 is performed, during the up-and-down movement of the push rod 54, the rack 540 drives the auxiliary gear 580 and shaft 58 to rotate, and the vibrating cam 581 continuously strikes the bottom surface of the filter plate 51 to vibrate and remove pollutants in the filter holes of the filter plate 51.

[0070] Example 9

[0071] The difference between this embodiment and embodiment 7 is that:

[0072] like Figure 1 , 10 As shown, it also includes an evaporation assembly 6 mounted on a base; the evaporation assembly 6 includes an evaporation tank 60 connected to each of the conveying pipes 26, an evaporation seat 61 located at the bottom of the evaporation tank 60, and a first heating plate 62 located at the bottom of the evaporation tank 60 and below the evaporation seat 61; a steam recovery pipe is provided at the top of the evaporation tank 60; a recovery door 600 is movably hinged to the side wall of the evaporation tank 60; a flow guide spiral 63 is sleeved inside the evaporation tank 60, and a second heating plate 64 is provided on the bottom surface of the flow guide spiral 63.

[0073] Example 10

[0074] This embodiment describes a method for reverse osmosis desalination and recovery treatment of high-salinity wastewater, based on the high-salinity wastewater reverse osmosis desalination and recovery treatment equipment of Embodiment 9. The difference from Embodiment 8 is that it further includes step S4.

[0075] S4, the concentrated water at the penetration place is sent into the inside of the evaporation tank 60 through the conveying pipe 26, and the concentrated water falls along the inner wall of the evaporation tank 60 under the action of the flow guide spiral 63, at this time, the second heating plate 64 is used to heat the flow guide spiral 63, so that the concentrated water is initially evaporated in the falling process; then the first heating plate 62 is used to heat the evaporation seat 61, and the concentrated water is secondarily evaporated and crystallized by the evaporation seat 61, the water vapor generated in the evaporation process is discharged from the evaporation tank through the steam recovery pipe, and finally the separated crystalline salt is recovered through the recovery door 600.

[0076] It should be noted that the booster pump 31, the switching motor 32, the electric push rod 42, the first heating plate 62 and the second heating plate 64 used in the application all adopt the prior art, and no special limitation is made here, and the corresponding products can be selected according to the actual needs.

Claims

1. A high-salinity wastewater reverse osmosis desalination recovery treatment apparatus, characterized by, The reverse osmosis assembly (2) comprises a water inlet head (20), an end cover (21), a cylinder (22) arranged between the water inlet head (20) and the end cover (21), a reverse osmosis membrane (23) sleeved in the cylinder (22), and a water outlet pipe (24) sleeved in the reverse osmosis membrane (23); the bottom end of the end cover (21) is provided with a concentrated water pipe (25); the side wall of the water outlet pipe (24) is provided with a through groove (240). The reverse flushing assembly (4) comprises a conversion pipe (40) rotatably clamped in each water outlet pipe (24), a reverse flushing water inlet pipe (41) connected with each cylinder (22) respectively, and an electric push rod (42) corresponding to each conversion pipe (40); each conversion pipe (40) is provided with a connecting gear (43), and the side wall of each conversion pipe (40) is provided with a through hole capable of being communicated with the through groove (240); each conversion pipe (40) is sleeved with a rotating disc (44), and the rotating disc (44) is provided with a butt joint groove; the end cover (21) is provided with a slotted groove capable of being communicated with the butt joint groove; each connecting gear (43) is engaged with a gear plate (45) connected with the electric push rod (42); the side wall of the shell (1) is provided with a reverse flushing water outlet pipe (46) at the lower end. The filter assembly (5) comprises a filter box (50) and a filter plate (51) arranged in the filter box (50); the inside of the filter box (50) is provided with a hinged seat (52) at the upper end through a pull rod, a plurality of sector plates (53) are circumferentially equidistantly hinged to the hinged seat (52), the lower bottom surface of each sector plate (53) is slidably clamped with a push rod (54) penetrating the filter plate (51) through a sliding beam (530), and the upper end surface of each sector plate (53) is provided with a tension spring (531) connected with the inner top of the filter box (50); the inside of the filter box (50) and below the filter plate (51) is provided with a butt joint disc (55) connected with each push rod (54), and the upper end surface of the butt joint disc (55) is provided with a threaded rod (56) penetrating the filter plate (51); the threaded rod (56) is threadedly connected with a threaded sleeve (560) rotatably clamped with the filter plate (51), and the threaded sleeve (560) is circumferentially equidistantly distributed with a plurality of scraping plates (57) abutting against the upper end surface of the filter plate (51). The reverse osmosis assembly (2) is provided with a plurality of groups, and each group of reverse osmosis assemblies (2) is provided with a plurality of reverse osmosis assemblies (2); a partition baffle (14) is arranged between adjacent two groups of reverse osmosis assemblies (2) in the inside of the shell (1); the number of the reverse flushing assembly (4) corresponds to the number of the reverse osmosis assembly (2); the top end of the shell (1) is provided with a water inlet adjusting assembly (3) for injecting water into the inside of the shell (1).

2. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 1, characterized in that, ​ 3. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 2, characterized in that, The water inlet adjusting assembly (3) comprises a water inlet tank (30) slidingly clamped at the top end of the shell (1), a booster pump (31) arranged on the base and connected with the water inlet tank (30), and a switching motor (32) arranged at the top end of the shell (1) and providing power for the water inlet tank (30); the bottom end of the water inlet tank (30) is provided with a connecting head (300) capable of conducting with the inside of the shell (1); the output end of the switching motor (32) is provided with a switching lead screw (320) connected with the water inlet tank (30).

4. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 3, characterized in that, The top end of the filter box (50) is provided with a water inlet pipe, the side wall is provided with a sludge pipe at a position corresponding to the filter plate (51), and the lower end of the side wall of the filter box (50) is connected with the input end of the booster pump (31) through a conduit.

5. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 4, characterized in that, The filter plate (51) is slidingly clamped with the inner wall of the filter box (50) through a buffer rod (510), and the buffer rod (510) is sleeved with buffer springs (511) located at the upper and lower ends of the filter plate (51); the lower bottom surface of the filter plate (51) and the corresponding positions of each push rod (54) are rotatably clamped with auxiliary gears (580) through shaft rods (58), and each push rod (54) is provided with a rack (540) engaged with the auxiliary gear (580) at the corresponding position; the two ends of each shaft rod (58) are provided with vibration cams (581) abutting against the lower bottom surface of the filter plate (51).

6. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 1, characterized in that, Further comprising an evaporation assembly (6) arranged on the base; the evaporation assembly (6) comprises an evaporation tank (60) connected with the shell (1), an evaporation seat (61) arranged on the inner bottom of the evaporation tank (60), and a first heating plate (62) arranged on the inner bottom of the evaporation tank (60) and located at the lower end of the evaporation seat (61); the top end of the evaporation tank (60) is provided with a steam recovery pipe; the side wall of the evaporation tank (60) is movably hinged with a recovery door (600).

7. The high-salinity wastewater reverse osmosis desalination and recovery treatment device according to claim 6, characterized in that, The evaporation tank (60) is sleeved with a flow guide spiral (63), and the lower bottom surface of the flow guide spiral (63) is provided with a second heating plate (64).

8. A high-salinity wastewater reverse osmosis desalination recovery treatment method based on the high-salinity wastewater reverse osmosis desalination recovery treatment equipment according to any one of claims 1-7, characterized in that, The method comprises the following steps: S1, connecting the electric push rod (42) with the external power supply; S2, passing the high-salinity wastewater into the inside of the shell (1), the high-salinity wastewater enters the inside of the cylinder (22), the clean water filtered and treated by the reverse osmosis membrane (23) enters the inside of the water outlet pipe (24) through the through groove (240) on the water outlet pipe (24), and is finally discharged from the shell (1) through the conversion pipe (40); the reverse osmosis concentrated water is discharged from the shell (1); S3, when the reverse osmosis water flow is reduced, stop the high salt wastewater into the shell (1) inside, and use electric push rod (42) to push the tooth plate (45) to move, the tooth plate (45) moves in the process to drive the connection gear (43) and the conversion pipe (40) rotation, make the conversion pipe (40) on the through hole and the through slot (240) on the water outlet pipe (24) staggered, and the butt joint groove on the rotating disc (44) and the butt joint groove on the end cover (21) are through; Finally through the backflushing water inlet pipe (41) to the cylinder (22) inside injection flushing water, the surface of reverse osmosis membrane (23) pollution is washed, and the washing wastewater is discharged from the shell (1) through the backflushing water outlet pipe (46).

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