CN114163044B

CN114163044B - Oily wastewater treatment device applying membrane technology

Info

Publication number: CN114163044B
Application number: CN202111459429.3A
Authority: CN
Inventors: 曹泽琦
Original assignee: Suzhou Dongdaren Smart Tech Co ltd
Current assignee: Suzhou Dongdaren Smart Tech Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2023-06-27
Anticipated expiration: 2041-12-02
Also published as: CN114163044A

Abstract

The invention discloses an oily wastewater treatment device applying a membrane technology, which relates to the technical field of wastewater treatment devices and comprises a sewage tank and a filtering component, wherein a water inlet is formed in the top of the sewage tank, a pretreatment component is arranged in the sewage tank, an aeration tank is arranged on one side of the sewage tank, and an aeration pipe is arranged in the aeration tank. According to the invention, through the mutual matching arrangement of the components, not only can sewage in the sewage be pretreated and grease and impurities floating on the surface of the sewage be cleaned, the filtering process is promoted, but also the sewage in the sewage tank is guided into the aeration tank through the communication component through preliminary filtration, the filtering effect can be promoted through aeration treatment, and pollutants in the sewage are not in direct contact with the filter element through the arrangement of the internal filtering component of the dynamic membrane filter, so that the long-term use of the filter element is ensured, and the dynamic membrane tube is automatically stripped from the membrane surface of the filter layer through the circulating coating component, so that the condition that the filter element is blocked by measurement is slowed down.

Description

Oily wastewater treatment device applying membrane technology

Technical Field

The invention relates to the technical field of wastewater treatment devices, in particular to an oily wastewater treatment device applying membrane technology.

Background

The membrane separation is a method for separating, classifying, purifying and enriching the gas or liquid mixed by two or more components by taking external energy or chemical position as driving force through the difference of selective permeation of the components in the mixture. At present, membrane separation technologies which have been put into practice mainly include microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrodialysis, dialysis, gas membrane separation and the like. These membrane technologies find wide application in medical, food, metallurgy, petroleum, chemical, instrumentation, and water treatment. The membrane technology is widely studied and applied in the treatment of oily wastewater, mainly adopting ultrafiltration membranes and microfiltration membranes of different materials for treatment, and the oily wastewater has wide sources, and all water directly contacted with oil contains oil, such as petroleum extraction water, cold-rolled emulsion wastewater of steel works, oily wastewater in petrochemical production, lubricant wastewater for metal cutting and grinding, cleaning wastewater of metal surfaces, tanker ballast water, tank washing water and the like. Such wastewater, if discharged directly without treatment, would cause serious environmental pollution.

Oily wastewater treatment device on the market has the advantages that the filtering is not thorough, meanwhile, pretreatment in a sewage tank is insufficient, grease and impurities existing in the oily wastewater are easy to remain, and then the oily wastewater is stained on the surface of a filtering piece, so that the filtering piece is blocked, and the filtering efficiency is low, so that the process is influenced.

Disclosure of Invention

The invention aims to provide an oily wastewater treatment device applying membrane technology, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an use oily wastewater treatment device of membrane technique, includes effluent water sump and filter module, the effluent water sump top is provided with the water inlet, just effluent water sump internally mounted has pretreatment module, effluent water sump one side is provided with the aeration tank, just aeration tank internally mounted has the aeration pipe, aeration pipe one side is provided with the intake pipe, aeration Chi Dingbu installs the force (forcing) pump, just the force (forcing) pump opposite side is connected with dynamic membrane filter, dynamic membrane filter right side is provided with circulation and scribbles the membrane module, pretreatment module includes rotation motor, drive wheelset, clean area, separation blade, recess, elastic support and adsorption membrane, rotation motor output is connected with drive wheelset, just the drive wheelset outside is provided with clean area, clean area surface fixedly connected with separation blade, just separation blade surface has seted up the recess, the inside block of recess is connected with the elastic support, just the elastic support internally mounted has the adsorption membrane, filter module install in inside the dynamic membrane filter.

Preferably, the pretreatment component further comprises a retention tank, a filter grating, an airtight door and a return pipe, wherein the retention tank is arranged on the left side of the sewage pool, the filter grating is arranged in the retention tank, the bottom of the retention tank is slidably connected with the airtight door, and the return pipe is arranged on the inner side of the retention tank.

Preferably, the effluent water sump internally mounted has the subassembly of squeezing, just the subassembly of squeezing includes carrier, hydraulic stem, filter press board, electric telescopic handle and push pedal, carrier internally mounted have the hydraulic stem, just the hydraulic stem output is connected with the filter press board, the inside both sides of filter press board all are connected with electric telescopic handle, just electric telescopic handle output is connected with the push pedal.

Preferably, the aeration tank internally mounted has the communication subassembly, just the communication subassembly includes communicating pipe, rack, active adsorption fiber, filtration membrane and rigid ball, all install communicating pipe outer end the rack is settled to the rack, just the rack surface has cup jointed active adsorption fiber, the rack inner wall is provided with filtration membrane, just the rack is inside to be placed rigid ball.

Preferably, the placement frames are symmetrically distributed about the central position of the communicating pipe, and the placement frames are in a spherical structure.

Preferably, the circulation film coating assembly comprises a film coating agent tank, a film coating water tank, a driving pump, a guide pipe, a circulating pipe and a circulating pump, wherein one side of the film coating agent tank is connected with the film coating water tank, the driving pump is installed at the top of the film coating water tank, the circulating pipe is arranged outside the driving pump, and the circulating pump is arranged in the middle of the circulating pipe.

Preferably, the filter component comprises a filter frame, a baffle disc, an adsorption surface, a slot and a filter element, wherein the baffle disc is arranged at the top of the filter frame, the slot is arranged on the surface of the baffle disc, and the filter element is arranged inside the slot.

Preferably, the filter assembly further comprises a servo motor, a gear, a convex gear, a straight rod, a rotating shaft and a sweeping plate, wherein the servo motor is arranged right above the filter frame, the output end of the servo motor is connected with the gear, the gear is externally meshed with the convex gear, the straight rod is internally penetrated through the convex gear, the rotating shaft is arranged at the bottom of the straight rod, and the sweeping plate is arranged outside the straight rod.

Preferably, the sweeping plate is in transmission connection with the gear through the straight rod, the sweeping plate is symmetrically distributed on the center of the straight rod, and the straight rod is in elastic rotation connection with the filter frame through the rotating shaft.

Preferably, a flushing port is formed in the top of the dynamic membrane filter, a precise security filter is connected to the bottom of the dynamic membrane filter, and a water outlet pipe is connected to the bottom of the precise security filter.

The invention provides an oily wastewater treatment device applying a membrane technology, which has the following beneficial effects: according to the oily wastewater treatment device applying the membrane technology, through the mutual matching arrangement among the components, not only can sewage in the sewage be pretreated, grease and impurities floating on the surface of the sewage can be cleaned, the filtering process is promoted, sewage in a sewage tank is guided into an aeration tank through preliminary filtration by a communicating component, the filtering effect can be promoted through aeration treatment, and pollutants in the sewage are not in direct contact with a filter element through the arrangement of the internal filtering component of the dynamic membrane filter, so that the long-term use of the filter element is ensured, and a dynamic membrane pump pipe is enabled to automatically strip the membrane surface of a filter layer through a circulating coating component, so that the condition that the filter layer is blocked by measurement is slowed down;

1. according to the sewage treatment device, through the mutual matching arrangement between the sewage pool and the pretreatment component, when sewage is led into the sewage pool from the water inlet, the driving wheel set and the cleaning belt can be driven to synchronously rotate under the driving of the rotating motor, and then the adsorption film in the baffle plate on the outer surface of the cleaning belt is matched, so that greasy dirt floaters on the surface of the sewage can be removed in the rotating process, and the massive floaters can be led into the retaining box along with the rotation of the adsorption film, and the sewage which enters together returns into the sewage pool again through the return pipe, and the adsorption film is conveniently maintained and replaced later through the clamping connection of the elastic support and the grooves on the surface of the baffle plate, and the airtight door is opened in a sliding mode after the adsorption film is used for a period of time, so that the internal dirt is taken out.

2. According to the sewage treatment device, the sewage tank, the communicating component and the aeration tank are mutually matched, so that the communicating pipe penetrates through the two ends of the sewage tank and the aeration tank, sewage is filtered through the spherical placement frame and the active adsorption fibers, the filtering process of the sewage can be further improved through the microfiltration membrane on the inner wall of the placement frame, the rigid balls are placed in the placement frame, the situation that the placement frame is greatly deformed to affect the filtering work due to collision of external force can be avoided, sediment in the sewage tank 1 can be squeezed through the squeezing component, the squeezed sewage is discharged through the sewage pipe on one side, and the rest of dried sludge is taken out through the drain outlet on the bottom of the dried sludge, so that the sweeping process of the dried sludge is facilitated.

3. According to the invention, through the mutual matching arrangement between the circulating film coating assembly and the dynamic film filter, the film coating agent is led into the film coating water tank by the film coating agent tank, and the internal film can be led into the dynamic film filter under the working of the pressurizing pump, so that the dynamic film pump pipe automatically peels off the film surface of the filter layer, thereby forming a new film surface of the filter layer, thoroughly solving the blocking problem, improving the practicability of the filter layer, and carrying out the circulating film coating process inside the dynamic film filter by the circulating pump, thereby improving the film coating rate of the filter layer.

4. According to the invention, through the mutual matching arrangement between the filter assembly and the dynamic membrane filter, the filter frame in the filter assembly is arranged in the dynamic membrane filter, the external dimension of the baffle disc at the top of the filter frame is larger than that of the filter frame, the baffle disc is formed by taking aluminum oxide with different apertures as a support body, and the adsorption surface is a zr02 tubular ceramic membrane, so that the maximum interception rate and the minimum membrane pollution can be obtained, further, pollutants in sewage can not be in direct contact with the filter element, the long-term use of the filter element is ensured, and the defects that the filter element in the filter element is easy to block and the service life is short are overcome.

5. According to the invention, through the arrangement of the filter assembly, the gear can be driven to rotate under the drive of the servo motor, the rotating gear can drive the convex gear meshed with the gear so as to drive the straight rod to partially rotate, the rotating straight rod can drive the surface sweeping plate to sweep the surface of the filter element, so that the pollutants on the surface of the filter element can be further removed, the service cycle of the filter element is prolonged, and the water subjected to multiple treatment enters the precise security filter for secondary filtration and is then discharged, thereby improving the filtration quality of the filter element.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an oily wastewater treatment device employing membrane technology according to the present invention;

FIG. 2 is a schematic diagram of a wastewater tank structure of an oily wastewater treatment device using membrane technology according to the present invention;

FIG. 3 is a schematic side view of a baffle plate of an oily wastewater treatment device using membrane technology according to the present invention;

FIG. 4 is a schematic view of a cyclic film coating assembly of an oily wastewater treatment device employing film technology in accordance with the present invention;

FIG. 5 is a schematic view showing the internal structure of a circulating film coating assembly of an oily wastewater treatment device using the film technology;

FIG. 6 is a schematic diagram showing a top view of a filter frame of an oily wastewater treatment device using membrane technology according to the present invention;

FIG. 7 is a schematic diagram of a communication assembly of an oily wastewater treatment device employing membrane technology according to the present invention.

In the figure: 1. a sewage pool; 2. a water inlet; 3. a pre-processing assembly; 301. a rotating motor; 302. a driving wheel group; 303. a cleaning belt; 304. a baffle; 305. a groove; 306. an elastic support; 307. an adsorption film; 308. a retention box; 309. a filter grid; 310. an airtight door; 311. a return pipe; 4. an aeration tank; 5. an aeration pipe; 6. an air inlet pipe; 7. a pressurizing pump; 8. a dynamic membrane filter; 9. a cyclic film coating assembly; 901. a film coating agent tank; 902. a film coating water tank; 903. a pressurizing pump; 904. a conduit; 905. a circulation pipe; 906. a circulation pump; 10. a filter assembly; 1001. a filter frame; 1002. a baffle disc; 1003. an adsorption surface; 1004. a slot; 1005. a filter element; 1006. a servo motor; 1007. a gear; 1008. a male gear; 1009. a straight rod; 1010. a rotating shaft; 1011. a sweeping plate; 11. a press assembly; 1101. a carrier; 1102. a hydraulic rod; 1103. a filter pressing plate; 12. a communication assembly; 1201. a communicating pipe; 1202. a setting frame; 1203. active adsorption fibers; 1204. a filtering membrane; 1205. a rigid ball; 13. a flushing port; 14. a precision cartridge filter; 15. and a water outlet pipe.

Detailed Description

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an oily wastewater treatment device applying membrane technology, including effluent water sump 1 and filtration module 10, effluent water sump 1 top is provided with water inlet 2, and effluent water sump 1 internally mounted has pretreatment module 3, effluent water sump 1 one side is provided with aeration tank 4, and aeration tank 4 internally mounted has aeration pipe 5, aeration pipe 5 one side is provided with intake pipe 6, aeration tank 4 top is installed and is pressurized pump 7, and the opposite side of pressurized pump 7 is connected with dynamic membrane filter 8, dynamic membrane filter 8 right side is provided with circulation film coating module 9, pretreatment module 3 includes rotating motor 301, drive wheelset 302, clean area 303, separation blade 304, recess 305, elastic support 306 and adsorption film 307, the output of rotating motor 301 is connected with drive wheelset 302, and drive wheelset 302 outside is provided with clean area 303, clean area 303 surface fixedly connected with separation blade 304, and separation blade 304 surface is provided with recess 305, recess 305 inside block connection has elastic support 306, and elastic support 306 internally installs adsorption film 307, filtration module 10 is installed in dynamic membrane filter 8 inside, dynamic membrane filter 8 top is provided with rinse mouth 13, and dynamic membrane filter 8 bottom is connected with water outlet pipe 14, accurate security filter 14 is connected with accurate security filter 14 bottom 15;

referring to fig. 1-3, the pretreatment assembly 3 further includes a retention tank 308, a filter grille 309, an airtight door 310 and a return pipe 311, the retention tank 308 is installed at the left side of the sewage tank 1, the filter grille 309 is installed inside the retention tank 308, the airtight door 310 is slidingly connected to the bottom of the retention tank 308, the return pipe 311 is installed inside the retention tank 308, the squeezing assembly 11 is installed inside the sewage tank 1, the squeezing assembly 11 includes a carrier 1101, a hydraulic rod 1102 and a filter pressing plate 1103, the hydraulic rod 1102 is installed inside the carrier 1101, and the output end of the hydraulic rod 1102 is connected to the filter pressing plate 1103;

the sewage pool 1 and the pretreatment component 3 are mutually matched, so that when sewage is led into the sewage pool 1 from the water inlet 2, the driving wheel set 302 and the cleaning belt 303 can be driven to synchronously rotate under the drive of the rotating motor 301, and then the adsorption film 307 in the baffle plate 304 on the outer surface of the cleaning belt 303 is matched, oil-polluted floats on the surface of the sewage pool 1 can be removed in the rotating process, large-sized floats can be guided into the retention tank 308 along with the rotation of the adsorption film 307, the sewage which enters together returns into the sewage pool 1 again through the return pipe 311, the adsorption film 307 is conveniently maintained and replaced after the adsorption film is used for a period of time through the clamping connection of the elastic support 306 and the groove 305 on the surface of the baffle plate 304, the airtight door 310 is opened in a sliding mode, so that the sewage in the sewage pool is taken out, the sediment in the sewage pool 1 can be pressed through the pushing of the filter pressing plate 1103 by the hydraulic rod 1102 in the pressing component 11, the pressed sewage is discharged through a sewage pipe on one side, and the rest dried sludge is conveniently taken out through a drain port on the bottom of the sewage pool;

referring to fig. 1 and 4, the circulating film coating assembly 9 includes a film coating agent tank 901, a film coating water tank 902, a driving pump 903, a conducting pipe 904, a circulating pipe 905 and a circulating pump 906, wherein one side of the film coating agent tank 901 is connected with the film coating water tank 902, the driving pump 903 is installed at the top of the film coating water tank 902, the circulating pipe 905 is arranged outside the driving pump 903, and the circulating pump 906 is arranged in the middle of the circulating pipe 905;

the method comprises the following specific operations that through the mutual matching arrangement between a circulating film coating assembly 9 and a dynamic film filter 8, film coating agent is led into a film coating water tank 902 by a film coating agent tank 901, and an internal film can be led into the dynamic film filter 8 under the operation of a pressurizing pump 903, so that a dynamic film pump pipe automatically peels off a filter layer film surface, a new filter layer film surface is formed, the blocking problem is thoroughly solved, the practicability is improved, the circulating film coating process can be carried out inside the dynamic film filter 8 by a circulating pump 906, and the film coating rate is improved;

referring to fig. 1, 5 and 6, a filter assembly 10 includes a filter frame 1001, a baffle 1002, an adsorption surface 1003, a slot 1004 and a filter element 1005, the baffle 1002 is installed at the top of the filter frame 1001, the surface of the baffle 1002 is provided with the slot 1004, the filter element 1005 is installed inside the slot 1004, the filter assembly 10 further includes a servo motor 1006, a gear 1007, a convex gear 1008, a straight rod 1009, a rotating shaft 1010 and a sweeping plate 1011, the servo motor 1006 is installed right above the filter frame 1001, the output end of the servo motor 1006 is connected with the gear 1007, the gear 1007 is externally meshed with the convex gear 1008, a straight rod 1009 is penetrated inside the convex gear 1008, a rotating shaft 1010 is installed at the bottom of the straight rod 1009, a sweeping plate 1011 is arranged outside the straight rod 1009, the sweeping plate 1011 is in transmission connection with the gear 1007 through the straight rod 1009, the sweeping plate 1011 is symmetrically distributed about the center position of the straight rod 1009, and the straight rod 1009 is in elastic rotation connection with the filter frame 1001 through the rotating shaft 1010;

the filter assembly 10 and the dynamic membrane filter 8 are mutually matched, the filter frame 1001 in the filter assembly 10 is arranged in the dynamic membrane filter 8, the outer size of the baffle disc 1002 at the top of the filter frame 1001 is larger than that of the filter frame 1001, the baffle disc 1002 is made of aluminum oxide with different apertures as a supporting body, the adsorption surface 1003 is a zr02 tubular ceramic membrane, so that the maximum interception rate and the minimum membrane pollution can be obtained, pollutants in sewage can not be in direct contact with the filter element 1005, the long-term use of the filter element 1005 is ensured, the defects that the filter element 1005 in the filter element 1005 is easy to block and has short service life are overcome, the gear 1007 can be driven to rotate under the driving of the servo motor 1006, the rotating gear 1007 can be driven to drive the convex gear 1008 engaged with the gear, the straight rod 1009 can be driven to partially rotate, the surface sweeping plate 1011 on the surface of the filter element 1005 can be further cleaned, the service cycle of the filter element 1005 can be prolonged, water enters the filter element 1005 after multiple treatments, the filter element 1005 is precisely filtered, and the quality of the filter element 1005 is accurately filtered again after the filter element is improved.

Referring to fig. 1 and 7, a communication assembly 12 is installed inside an aeration tank 4, the communication assembly 12 includes a communication pipe 1201, a placement frame 1202, active adsorption fibers 1203, a filter membrane 1204 and a rigid ball 1205, the placement frame 1202 is installed at the outer end of the communication pipe 1201, the active adsorption fibers 1203 are sleeved on the outer surface of the placement frame 1202, the filter membrane 1204 is arranged on the inner wall of the placement frame 1202, the rigid ball 1205 is placed inside the placement frame 1202, the placement frame 1202 is symmetrically distributed about the center position of the communication pipe 1201, and the placement frame 1202 is in a spherical structure;

the sewage treatment device specifically comprises a sewage tank 1, a communication assembly 12 and an aeration tank 4, wherein the communication tube 1201 penetrates through the two ends of the sewage tank 1 and the aeration tank 4, the sewage is filtered through a spherical placement frame 1202 and active adsorption fibers 1203, the filtering process of the sewage is further improved through a filtering membrane 1204 on the inner wall of the placement frame 1202, a rigid ball 1205 is placed inside the placement frame 1202, the situation that the filtering work is affected by large deformation caused by the collision of external force of the placement frame 1202 can be avoided, sediment in the sewage tank 1 can be squeezed through a squeezing assembly 11, the squeezed sewage is discharged through a sewage pipe on one side, and the rest of dried sludge is taken out through a sewage outlet on the bottom of the sewage treatment device, so that the sweeping process of the dried sludge is facilitated.

In summary, when the oily wastewater treatment device applying the membrane technology is used, firstly, sewage is led into the sewage tank 1 through the water inlet 2, the driving wheel set 302 and the cleaning belt 303 can be driven to synchronously rotate under the driving of the rotating motor 301, and then the adsorption membrane 307 in the baffle plate 304 on the outer surface of the cleaning belt 303 is matched, so that greasy dirt floaters on the surface of the sewage can be removed in the rotating process, and large-sized floaters can be guided into the retaining box 308 along with the rotation of the adsorption membrane 307, the sewage which enters together returns into the sewage tank 1 again through the return pipe 311, the adsorption membrane 307 is connected with the groove 305 on the surface of the baffle plate 304 through the elastic support 306 so as to facilitate the maintenance and replacement of the later period, and the airtight door 310 is opened in a sliding way after the adsorption membrane is used for a period of time, so that the internal dirty is taken out, the filter pressing plate 1103 can be pushed by the hydraulic rod 1102 in the pressing assembly 11 so that sediment in the sewage tank 1 can be pressed, the pressed sewage is discharged through a sewage pipe at one side, the rest of dried sludge is taken out through a sewage outlet at the bottom of the sewage pipe, the cleaning process is convenient, then through the arrangement of a communicating component 12, the communicating pipe 1201 penetrates to the two ends of a sewage tank 1 and an aeration tank 4, sewage is filtered through a spherical mounting frame 1202 and active adsorption fibers 1203, the filtering process can be further improved through a filtering membrane 1204 on the inner wall of the mounting frame 1202, a rigid ball 1205 is placed in the mounting frame 1202, the situation that the filtering work is influenced by large deformation caused by the collision of external force of the mounting frame 1202 can be avoided, the primarily treated sewage is further led into the aeration tank 4, then the secondarily treated sewage is led into a dynamic membrane filter 8 through a pressurizing pump 7, through the arrangement of an internal filtering component 10, the filter frame 1001 in the filter assembly 10 is arranged in the dynamic membrane filter 8, the external dimension of the baffle disc 1002 at the top of the filter frame 1001 is larger than that of the filter frame 1001, the baffle disc 1002 is formed by taking aluminum oxide with different apertures as a support body, the adsorption surface 1003 is a zr02 tubular ceramic membrane, so that the maximum interception rate and the minimum membrane pollution can be obtained, further, pollutants in sewage are not in direct contact with the filter element 1005, the long-term use of the filter element 1005 is ensured, the defects that the filter element 1005 in the filter assembly 1005 is easy to be blocked and has short service life are overcome, the gear 1007 can be driven to rotate by the servo motor 1006 through the arrangement of the filter assembly 10, the rotating gear 1007 can be driven to drive the convex gear 1008 meshed with the gear 1007 to drive the straight rod 1009 to rotate locally, the rotating straight rod 1009 can drive the surface sweeping plate 1011 to sweep the surface of the filter element 1005, the device can further remove pollutants on the surface of the filter element 1005, prolong the service cycle of the filter element 1005, lead the water after multiple treatment to enter the precision cartridge filter 14 for secondary filtration, then be discharged, improve the filtration quality, finally lead the sewage after multiple filtration to enter the precision cartridge filter 14 for secondary filtration and then be discharged through the water outlet pipe 15, the device can lead the film coating agent into the film coating water tank 902 through the mutual matching arrangement between the circulating film coating component 9 and the dynamic film filter 8 by the film coating agent tank 901, lead the internal film to be led into the dynamic film filter 8 under the working of the pressure pump 903, further lead the dynamic film coating pipe to automatically strip the film surface of the filter layer, thereby forming a new film surface of the filter layer, thoroughly solving the blockage problem, improving the practicability and being capable of carrying out the circulating film coating process on the inside of the dynamic film filter 8 through the circulating pump 906, and the film coating rate is improved.

Claims

1. The utility model provides an oily wastewater treatment device applying membrane technology, its characterized in that includes effluent water sump (1) and filtration subassembly (10), effluent water sump (1) top is provided with water inlet (2), just effluent water sump (1) internally mounted has pretreatment unit (3), effluent water sump (1) one side is provided with aeration tank (4), just aeration tank (4) internally mounted has aeration pipe (5), aeration pipe (5) one side is provided with intake pipe (6), booster pump (7) are installed at aeration tank (4) top, just booster pump (7) opposite side is connected with dynamic membrane filter (8), dynamic membrane filter (8) right side is provided with circulation and scribbles subassembly (9), pretreatment unit (3) are including rotating motor (301), driving pulley group (302), clean area (303), separation blade (304), recess (305), elastic support (306) and adsorption membrane (307), the output of rotating motor (301) is connected with driving pulley group (302), just driving pulley group (302) outside is provided with clean area (303), clean area (305) surface connection (304) have, separation blade (304), the inside block of recess (305) is connected with elastic support (306), just elastic support (306) inside is settled have adsorption membrane (307), filtration subassembly (10) install in dynamic membrane filter (8) are inside.

2. The oily wastewater treatment device applying membrane technology according to claim 1, wherein the pretreatment assembly (3) further comprises an indwelling tank (308), a filtering grid (309), an airtight door (310) and a return pipe (311), the indwelling tank (308) is installed on the left side of the sewage tank (1), the filtering grid (309) is installed inside the indwelling tank (308), the airtight door (310) is connected to the bottom of the indwelling tank (308) in a sliding manner, and the return pipe (311) is installed inside the indwelling tank (308).

3. The oily wastewater treatment device applying membrane technology according to claim 1, wherein the sewage tank (1) is internally provided with a squeezing assembly (11), the squeezing assembly (11) comprises a bearing frame (1101), a hydraulic rod (1102) and a filter pressing plate (1103), the hydraulic rod (1102) is internally provided with the bearing frame (1101), and the output end of the hydraulic rod (1102) is connected with the filter pressing plate (1103).

4. The oily wastewater treatment device applying the membrane technology according to claim 1, wherein a communication component (12) is installed inside the aeration tank (4), the communication component (12) comprises a communication pipe (1201), a placement frame (1202), active adsorption fibers (1203), a filter membrane (1204) and a rigid ball (1205), the placement frame (1202) is installed at the outer end of the communication pipe (1201), the active adsorption fibers (1203) are sleeved on the outer surface of the placement frame (1202), the filter membrane (1204) is arranged on the inner wall of the placement frame (1202), and the rigid ball (1205) is placed inside the placement frame (1202).

5. The oil-containing wastewater treatment device using membrane technology according to claim 4, wherein the placement frames (1202) are symmetrically distributed about the central position of the communicating pipe (1201), and the placement frames (1202) are in a spherical structure.

6. The oily wastewater treatment device applying the membrane technology according to claim 1, wherein the circulating film coating assembly (9) comprises a film coating agent tank (901), a film coating water tank (902), a driving pump (903), a conducting pipe (904), a circulating pipe (905) and a circulating pump (906), wherein one side of the film coating agent tank (901) is connected with the film coating water tank (902), the driving pump (903) is mounted on the top of the film coating water tank (902), the circulating pipe (905) is arranged outside the driving pump (903), and the circulating pump (906) is arranged in the middle of the circulating pipe (905).

7. The oily wastewater treatment device applying membrane technology according to claim 1, wherein the filtering assembly (10) comprises a filtering frame (1001), a baffle disc (1002), an adsorption surface (1003), a slot (1004) and a filter element (1005), the baffle disc (1002) is mounted on the top of the filtering frame (1001), the slot (1004) is arranged on the surface of the baffle disc (1002), and the filter element (1005) is mounted inside the slot (1004).

8. The oily wastewater treatment device using membrane technology according to claim 7, wherein the filtering component (10) further comprises a servo motor (1006), a gear (1007), a straight rod (1008), a rotating shaft (1010) and a sweeping plate (1011), the servo motor (1006) is installed right above the filtering frame (1001), an output end of the servo motor (1006) is connected with the gear (1007), the gear (1007) is externally meshed and connected with the straight rod (1009), the straight rod (1009) is internally penetrated and arranged, the rotating shaft (1010) is arranged at the bottom of the straight rod (1009), and the sweeping plate (1011) is arranged outside the straight rod (1009).

9. The oily wastewater treatment device using membrane technology according to claim 8, wherein the sweeping plate (1011) is in transmission connection with the gear (1007) through the straight rod (1009), the sweeping plate (1011) is symmetrically distributed about the central position of the straight rod (1009), and the straight rod (1009) is in elastic rotation connection with the filter frame (1001) through the rotating shaft (1010).

10. The oily wastewater treatment device applying the membrane technology according to claim 1, wherein a flushing port (13) is formed at the top of the dynamic membrane filter (8), a precision cartridge filter (14) is connected to the bottom of the dynamic membrane filter (8), and a water outlet pipe (15) is connected to the bottom of the precision cartridge filter (14).