CN115228292A

CN115228292A - Water recycling device in ultrafiltration system

Info

Publication number: CN115228292A
Application number: CN202210923812.8A
Authority: CN
Inventors: 徐千帆; 王敏华; 陈月兴
Original assignee: Zhejiang Datuo Printing And Dyeing Co ltd
Current assignee: Zhejiang Datuo Printing And Dyeing Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-10-25
Anticipated expiration: 2042-08-02
Also published as: CN115228292B

Abstract

The utility model relates to a water retrieval and utilization device among ultrafiltration system relates to ultrafiltration system's technical field, including the frame, be provided with the recoil pipe and the wet return of being connected with ultrafiltration unit in the frame, the recoil pipe is used for leading to water in the ultrafiltration unit, and the wet return is used for deriving the recoil waste water that produces in the ultrafiltration unit, is provided with the processing mechanism that the recoil waste water that is used for the wet return to lead in the frame carries out the processing, and processing mechanism all communicates with recoil pipe and wet return. This application is through leading to water in the recoil pipe and is carried out the backwash water to ultrafiltration unit, and the recoil waste water after ultrafiltration unit through the backwash water is among the leading-in processing mechanism of wet return, and processing mechanism carries out filtration treatment to the backwash waste water, and the clear water rethread backwash pipe that obtains after filtration treatment accomplished carries out next backwash water work to ultrafiltration unit to when the completion carries out backwash water work to ultrafiltration unit, carry out cyclic utilization to backwash waste water.

Description

Water recycling device in ultrafiltration system

Technical Field

The application relates to the technical field of ultrafiltration systems, in particular to a water recycling device in an ultrafiltration system.

Background

Ultrafiltration is a common sewage treatment means in the society today, and the principle of ultrafiltration is actually a principle of a membrane separation process, wherein ultrafiltration utilizes a pressure active membrane to intercept colloids, particles and substances with relatively high molecular weight in water under the action of an external pushing force, and water and small solute particles are separated through the membrane.

In the related art, after the ultrafiltration unit with a large number of ultrafiltration membrane fibers is used for filtering wastewater, a large number of impurities in the wastewater can be adhered to the ultrafiltration membrane fibers and block the filtering micropores on the ultrafiltration membrane fibers, so that the subsequent filtering efficiency of the ultrafiltration unit on the wastewater is reduced. Therefore, in order to solve the above technical problems, after the ultrafiltration unit is operated for a period of time, the ultrafiltration membrane fibers usually need to be backwashed by using clean water, so that impurities adhered to the ultrafiltration membrane fibers are removed in sequence, and the long-term use of the ultrafiltration unit is ensured.

However, a large amount of backflushing wastewater containing impurities is generated after backflushing, and the backflushing wastewater is usually recycled to the front end of a water plant and mixed with the original wastewater of the water plant in a water plant, so that more and more impurities are easily contained in the wastewater to be filtered which is introduced into an ultrafiltration unit, micropores on ultrafiltration membrane fibers are easily blocked, and the filtering efficiency of the wastewater is reduced.

Disclosure of Invention

In order to reduce the impurity content in the recoil waste water, guarantee the filter effect of milipore filter fibre to waste water, this application provides a water retrieval and utilization device among ultrafiltration system.

The application provides a water recycling device among ultrafiltration system adopts following technical scheme:

the utility model provides a water retrieval and utilization device among ultrafiltration system, includes the frame, be provided with back flush pipe and the wet return of being connected with ultrafiltration unit in the frame, the back flush pipe is used for leading to water in the ultrafiltration unit, the wet return is used for deriving the recoil waste water that produces in the ultrafiltration unit, be provided with the processing mechanism that the recoil waste water that is used for the wet return to lead in the frame carries out the processing, processing mechanism all communicates with back flush pipe and wet return.

Through adopting above-mentioned technical scheme, water-flowing carries out the backwash water to ultrafiltration unit in the recoil pipe, the recoil waste water of ultrafiltration unit after the backwash water is among the leading-in processing mechanism of wet return, processing mechanism carries out filtration treatment to the backwash waste water, the clear water rethread backwash pipe that obtains after filtration treatment accomplished carries out next backwash water work to ultrafiltration unit, thereby when the completion carries out backwash water work to ultrafiltration unit, cyclic utilization has been carried out to backwash waste water, the waste of water resource has been reduced when guaranteeing ultrafiltration unit's result of use, and impurity in the waste water has been carried out the processing and has reduced the probability of micropore jam on the milipore filter fibre, the filtration efficiency of milipore filter fibre to waste water has been guaranteed.

Optionally, the processing mechanism includes:

the treatment tank is arranged on the rack, and a flushing pump communicated with the back flushing pipe and a water suction pump communicated with the water return pipe are arranged on the treatment tank;

the end, far away from the ultrafiltration unit, of the water return pipe vertically extends upwards into the treatment tank, the filter cover is sleeved on the water return pipe, the water outlet end of the water return pipe vertically extends upwards into the filter cover, a placement cavity is formed between the water outlet end of the water return pipe and the inner side wall of the filter cover, and impurities filtered by the filter cover are accumulated in the placement cavity;

the cleaning assembly is used for cleaning impurities in the placing cavity.

Through adopting above-mentioned technical scheme, the suction pump starts to extract during recoil waste water passes through the wet return and gets into the filter mantle, impurity in the filter mantle will recoil waste water filters out and is placing the intracavity, water after the filtration passes through the filter mantle and flows into the treatment trough and collect, when needs carry out the recoil water to the filter unit, the water that the flushing pump starts to extract in the treatment trough gets into and carries out the recoil water work to the filter unit in the recoil pipe, then the clearance subassembly is cleared up the impurity of placing the intracavity and is convenient for handle recoil waste water afterwards, thereby the work of getting rid of impurity in the recoil waste water has been accomplished.

Optionally, the cleaning assembly includes:

the inner bottom wall of the filter cover is provided with a vertical waste outlet, the cleaning pipe is arranged on the treatment tank and communicated with the waste outlet, and the cleaning pipe is used for discharging impurities;

the baffle is horizontally arranged on the filter cover in a sliding manner and shields the waste outlet;

the push plate is arranged on the filter cover in a sliding mode and is positioned in the placing cavity;

the driving piece is used for driving the push plate to move so as to push impurities into the waste discharge hole.

Through adopting above-mentioned technical scheme, moving baffle removes from going out the waste hole department, and the driving piece starts to drive the push pedal and promotes the impurity of placing the intracavity and get into out in the waste hole and derive through the clearance pipe, and moving baffle blocks out the waste hole after the clearance is accomplished to accomplish and pile up the cleaning work of placing the impurity of intracavity.

Optionally, the driving member includes:

the driving motor is arranged on the filter cover;

the actuating lever, actuating lever one end sets up on the push pedal, the actuating lever other end and driving motor output shaft.

Through adopting above-mentioned technical scheme, driving motor starts to drive the actuating lever and rotates, and the actuating lever rotates and drives the push pedal and remove to the completion realizes the removal work of push pedal through control driving motor.

Optionally, a raw material tank is arranged on the rack, a precipitator is contained in the raw material tank, an adding pipe communicated with the interior of the raw material tank is arranged on the treatment tank, and a switch valve is arranged on the adding pipe.

The backwashing wastewater generated after backwashing of the ultrafiltration membrane fibers generally contains chemical pollution components such as heavy metals and cyanides, and the components are difficult to filter by a physical method and generally need to be removed by practical chemical precipitation;

through adopting above-mentioned technical scheme, open the waste water of ooff valve in to the treatment trough and add the precipitant, chemical contamination composition in the waste water carries out chemical precipitation to the completion is handled the chemical precipitation of recoil waste water, has reduced the wash pipe and when leading back the filter unit with the reuse water and carrying out the backwash water, the probability of chemical contamination in the reuse water to the inside pollution that causes of milipore filter fibre has guaranteed the ultrafiltration membrane fibre to the ultrafiltration effect of waste water.

Optionally, diapire is the obconical shape in the treatment trough, the height that highly is less than height all around of wall center department in the treatment trough, the cleaning tube pipe diameter is greater than the wet return pipe diameter, the wet return is located cleaning tube inside, set up the collection hole that supplies the precipitate to get into on the cleaning tube lateral wall, vertical sliding is provided with the fender ring that blocks the collection hole on the cleaning tube.

Through adopting above-mentioned technical scheme, chemical contamination among the waste water deposits on the diapire in the treatment tank and piles up around the clearance pipe along the interior diapire of treatment tank slope, and the washing pipe extraction supernatant in the treatment tank gets into in the washing pipe after, removes to keep off the ring and shifts away from the collecting hole, and the precipitate gets into through the collecting hole under the action of gravity and discharges together with the impurity in the filter mantle before in the clearance pipe to the clearance work to the precipitate has been accomplished.

Optionally, be provided with on the treatment trough and be used for scraping the miscellaneous subassembly of scraping the sediment on the bottom wall in the treatment trough, scrape miscellaneous subassembly and include:

the top end of the rotating ring vertically penetrates through the bottom surface of the filter cover upwards and is fixedly connected with the push plate;

the mounting rod is arranged on the rotating ring;

and the scraping plate is arranged on the mounting rod and is abutted against the bottom wall in the treatment groove.

Through adopting above-mentioned technical scheme, when driving motor started to drive the push pedal and removed, the push pedal removed and drives the change and rotate, and the change rotates and drives the installation pole and remove, and the installation pole removes and drives the scraper blade and remove, and the scraper blade removes and scrapes the deposit of adhesion on the bottom wall in the treatment tank and makes in the deposit gets into the collecting hole along the bottom wall in the treatment tank to the probability of deposit piling up on the bottom wall in the treatment tank has been reduced.

Optionally, be provided with vertical vibration strip on the filter plate cover inside wall, the push pedal can collide with the vibration strip and drive the filter mantle and produce the vibration when moving up from the vibration strip.

Through adopting above-mentioned technical scheme, the push pedal is in the time of placing the intracavity and is moving with the vibration strip contact, and the push pedal makes the vibration strip drive whole filter mantle and produces the vibration with the collision of vibration strip, and the filter mantle vibration shakes the impurity of adhesion on the filter mantle and falls to placing the intracavity to when having reduced the recoil waste water and having advanced the filter mantle and filter, impurity adhesion in the filter mantle is on the filter mantle and cause the probability of jam to the filter mantle.

Optionally, be provided with on the clearance pipe and carry out spacing subassembly to the vertical position of keeping off the ring, spacing subassembly includes:

the outer side wall of the cleaning pipe is provided with a horizontal sliding groove, and the limiting spring is arranged on the sliding groove;

the stopper, set up the spliced eye that the level runs through fender ring lateral wall on the fender ring, when keeping off the ring and blockking the collecting hole, the spliced eye is contradicted with clearance tub lateral wall, the stopper level slides and sets up on the groove that slides and with spacing spring coupling, works as when keeping off the ring and puting aside from the collecting hole, the stopper is worn out the groove that slides at spacing spring effect part and is pegged graft the cooperation with the spliced eye outward.

By adopting the technical scheme, when the collecting hole needs to be opened, the limiting block is driven by compressing the limiting spring to enter the sliding groove, the stop ring is moved upwards until the inserting hole is aligned with the sliding groove, the limiting spring is loosened, and the limiting block partially penetrates out of the sliding groove under the action of the limiting spring to be in inserting fit with the inserting hole, so that the limiting work of the stop ring at the position above the collecting hole is completed; after the collection of the sediment by the collection hole is completed, the extrusion limiting block enters the sliding groove, and the baffle ring falls under the action of gravity to block the collection hole, so that the movement and the limiting work of the baffle ring are completed.

Optionally, the lower side wall of the limiting block, which penetrates out of the sliding groove outer portion, is provided with a circular arc-shaped guide surface, and the height of one side of the guide surface, which is far away from the limiting spring, is higher than the height of one side of the guide surface, which is close to the limiting spring.

By adopting the technical scheme, the lower side wall of the part, penetrating out of the sliding groove, of the limiting block is provided with the arc-shaped guide surface, when the baffle ring moves upwards to contact with the guide surface, the guide surface generates a component force for driving the limiting block to enter the sliding groove, so that the limiting block does not need to be manually extruded to enter the sliding groove, the labor intensity is reduced, and the working efficiency is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the backwashing water is introduced into the ultrafiltration unit through the backwashing pipe, the backwashing wastewater of the ultrafiltration unit after the backwashing water is introduced into the treatment mechanism through the water return pipe, the treatment mechanism performs filtration treatment on the backwashing wastewater, and the clear water obtained after the filtration treatment is performed is used for performing next backwashing water work on the ultrafiltration unit through the backwashing pipe, so that the backwashing wastewater is recycled while the backwashing water work on the ultrafiltration unit is completed, the use effect of the ultrafiltration unit is ensured, the waste of water resources is reduced, the probability of micropore blockage on ultrafiltration membrane fibers is reduced by treating impurities in the wastewater, and the filtration efficiency of the ultrafiltration membrane fibers on the wastewater is ensured;

2. the movable baffle plate is moved away from the waste outlet hole, the driving piece is started to drive the push plate to push impurities in the placing cavity to enter the waste outlet hole and to be led out through the cleaning pipe, and after cleaning is finished, the movable baffle plate blocks the waste outlet hole, so that the cleaning work of the impurities accumulated in the placing cavity is finished;

3. through the push pedal when placing the intracavity and remove with the vibration strip contact, the push pedal makes the vibration strip drive whole filter mantle and produces the vibration with the collision of vibration strip, and the filter mantle vibration shakes the impurity of adhesion on the filter mantle and falls to placing the intracavity to when having reduced the recoil waste water and having advanced the filter mantle and filter, impurity adhesion in the filter mantle is on the filter mantle and cause the probability of jam to the filter mantle.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic structural view of the treatment mechanism, the spacing assembly and the trash removal assembly of the present application, with the side walls of the treatment tank, the side walls of the filter housing and the side walls of the cleaning tube shown in section;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

fig. 4 is an enlarged schematic view of a portion B in fig. 2.

Reference numerals: 1. a frame; 11. back flushing the pipe; 12. a water return pipe; 13. a water pump; 14. a back flushing pump; 15. discharging a waste hole; 16. a slide hole; 17. an addition pipe; 18. a collection well; 19. a baffle ring; 2. a processing mechanism; 21. a treatment tank; 22. a filter housing; 221. a vibrating bar; 23. cleaning the assembly; 24. a placement chamber; 25. cleaning the pipe; 26. a baffle plate; 27. pushing the plate; 28. a drive member; 281. a drive motor; 282. a drive rod; 283. a cross bar; 284. a vertical rod; 3. a limiting component; 31. a limiting spring; 32. a limiting block; 33. inserting holes; 34. a sliding groove; 35. a guide surface; 4. a scraping assembly; 41. rotating the ring; 42. mounting a rod; 43. and a scraper.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a water recycling device in an ultrafiltration system.

Referring to fig. 1, the water recycling device in the ultrafiltration system comprises a frame 1, wherein a backflushing pipe 11 and a water return pipe 12 which are communicated with the ultrafiltration unit are fixedly connected to the frame 1, and a treatment mechanism 2 for treating backflushing wastewater led back by the water return pipe 12 is arranged on the frame 1.

Referring to fig. 1 and 2, the processing mechanism 2 includes a processing tank 21, a filter housing 22, and a cleaning assembly 23. The treatment tank 21 is fixedly connected to the frame 1. Fixedly connected with suction pump 13 on the frame 1, the one end level that filter unit was kept away from to wet return 12 passes behind suction pump 13 vertical upwards and passes in processing tank 21 diapire extends to processing tank 21. The return pipe 12 is located at the center of the bottom wall in the treatment tank 21, the bottom wall in the treatment tank 21 is in an inverted cone shape, and the height of the bottom wall in the treatment tank 21 close to the inner side wall of the treatment tank 21 is higher than that of the bottom wall in the treatment tank 21 close to the return pipe 12.

Referring to fig. 2, the filter cover 22 is fixedly connected to the end of the return pipe 12 located in the treatment tank 21, and the top end portion of the return pipe 12 extends into the filter cover 22, and a placing cavity 24 for placing impurities filtered out of the wastewater by the filter cover 22 is formed between the outer side wall of the return pipe 12 and the inner side wall of the filter cover 22. A plurality of water filtering holes penetrating through the side wall of the filter cover 22 are horizontally and uniformly distributed on the outer side wall of the filter cover 22.

Referring to fig. 2 and 3, a cleaning assembly 23 is used for cleaning impurities in the placing cavity 24, and the cleaning assembly 23 includes a cleaning pipe 25, a baffle plate 26, a push plate 27 and a driving member 28. Cleaning tube 25 fixed connection is in frame 1, and cleaning tube 25 one end and waste collection department intercommunication, the vertical processing tank 21 diapire that upwards passes of cleaning tube 25 other end extend the filter mantle 22 below and contradict with filter mantle 22 lower surface. The pipe diameter of cleaning pipe 25 is greater than the pipe diameter of wet return 12, and the part that wet return 12 is located treatment tank 21 is located cleaning pipe 25, forms the miscellaneous chamber that supplies impurity to pass through between wet return 12 lateral wall and the cleaning pipe 25 inside wall. The lower surface of the filter cover 22 is provided with a vertical waste outlet 15, and the waste outlet 15 is communicated with the impurity outlet cavity.

Referring to fig. 2 and 3, a horizontal sliding hole 16 is formed in the outer side wall of the cleaning pipe 25, a baffle 26 is horizontally slidably mounted on the lower surface of the filter cover 22 and located in the sliding hole 16, and when the movable baffle 26 abuts against the outer side wall of the return pipe 12, the baffle 26 shields the waste discharge hole 15. Push pedal 27 slides along wet return 12 circumference and installs on filtering cover 22 and be located and place the chamber 24, and push pedal 27 is along filtering cover 22 radial both ends respectively with filtering cover 22 inside wall and wet return 12 lateral wall conflict, and push pedal 27 lower surface is contradicted with filtering cover 22 inside bottom wall. The inner side wall of the filter cover 22 is fixedly connected with a vertical vibrating strip 221, and the push plate 27 can drive the filter cover 22 to vibrate when contacting and colliding with the vibrating strip 221.

Referring to fig. 2 and 3, the driving member 28 is used for pushing the push plate 27 to move, and the driving member 28 includes a driving motor 281 and a driving rod 282. The drive motor 281 is fixedly attached to the upper surface of the filter sock 22 and the output shaft extends vertically downward through the top wall of the filter sock 22 into the filter sock 22. The driving rod 282 comprises a cross rod 283 and a vertical rod 284, one end of the vertical rod 284 is fixedly connected to the upper surface of the push plate 27, and the other end of the vertical rod 284 vertically extends upwards to the bottom height of the output shaft of the driving motor 281. One end of the cross rod 283 is fixedly connected with the top end of the vertical rod 284, and the other end of the cross rod 283 is fixedly connected with the bottom end of the output shaft of the driving motor 281.

Referring to fig. 2 and 3, the water suction pump 13 starts to pump the backflushing wastewater in the filtering unit into the water return pipe 12, the backflushing wastewater is led out at one end of the water return pipe 12, which is located in the filtering cover 22, the filtering cover 22 filters the backflushing wastewater, and impurities in the backflushing wastewater are filtered out in the placing cavity 24 by the filtering cover 22. When the backflushing wastewater is filtered, the movable baffle 26 is moved away from the waste outlet 15, the driving motor 281 is started to drive the transverse rod 283 to rotate, the transverse rod 283 rotates to drive the vertical rod 284 and the push plate 27 to move, and the push plate 27 moves to push impurities in the placing cavity 24 to enter the waste outlet 15 and be led out through the cleaning pipe 25. The push plate 27 moves to contact the vibration bar 221 so that the filter housing 22 vibrates, thereby vibrating the foreign substances adhered to the inner sidewall of the filter housing 22 down into the placing chamber 24.

Referring to fig. 2, an adding pipe 17 having a bottom end communicated with the inside of the treating tank 21 is fixedly connected to the upper surface of the treating tank 21, the other end of the adding pipe 17 is communicated with a raw material tank containing a precipitant, and a switching valve is fixedly connected to the adding pipe 17. The precipitant is added to the backflush wastewater filtered by the filter 22 to perform chemical precipitation treatment on the backflush wastewater. The outer side wall of the treatment tank 21 is fixedly connected with a backflushing pump 14 communicated with the backflushing pipe 11, and the backflushing pump 14 pumps supernatant of the wastewater subjected to the precipitation treatment in the treatment tank 21 into the backflushing pipe 11.

Referring to FIGS. 2 and 4, the cleaning pipe 25 has a horizontal collecting hole 18 formed on the outer side wall thereof adjacent to the inner bottom wall of the treating bath 21. The outer side wall of the cleaning pipe 25 is vertically slidably sleeved with a baffle ring 19 for blocking the collecting hole 18. The cleaning pipe 25 is provided with a limiting component 3 for limiting the vertical position of the baffle ring 19.

Referring to fig. 2 and 4, the stopper assembly 3 includes a stopper spring 31 and a stopper 32. The outer side wall of the baffle ring 19 is provided with a horizontal inserting hole 33. When the baffle ring 19 blocks the collecting hole 18, the insertion hole 33 is abutted against the outer side wall of the cleaning pipe 25 above the collecting hole 18. The outer side wall of the cleaning pipe 25 is provided with a horizontal sliding groove 34. The limiting spring 31 is fixedly connected to the inner bottom wall of the sliding groove 34. The limiting block 32 is horizontally arranged on the sliding groove 34 in a sliding mode and is fixedly connected with the limiting spring 31, and one end, far away from the limiting spring 31, of the limiting block 32 penetrates out of the sliding groove 34 under the effect of the limiting spring 31. The side wall of the limiting block 32 close to the baffle ring 19 is provided with a circular arc-shaped guide surface 35, and the height of the end, far away from the limiting spring 31, of the guide surface 35 is higher than the height of the end close to the limiting spring 31. When the retaining ring 19 is removed from the collecting hole 18, the limiting block 32 is inserted into the insertion hole 33.

Referring to fig. 2, the treating bath 21 is provided with a scraping assembly 4 for scraping off the sediments on the bottom wall of the treating bath 21, and the scraping assembly 4 includes a rotary ring 41, a mounting rod 42 and a scraping plate 43. The rotating ring 41 is rotatably sleeved on the outer side wall of the cleaning pipe 25, and the top end of the rotating ring 41 vertically penetrates through the bottom wall of the filter cover 22 upwards and is fixedly connected with the lower surface of the push plate 27. The mounting rod 42 is fixedly attached to the lower surface of the swivel 41. The scraper 43 is fixedly attached to the bottom end of the mounting rod 42 and the lower surface thereof abuts against the inner bottom wall of the processing tank 21.

Referring to fig. 2, the push plate 27 moves while moving the rotary ring 41, the rotary ring 41 moves the mounting rod 42, and the mounting rod 42 moves the scraper 43 to scrape off the sediment deposited on the bottom wall of the treatment tank 21.

The working principle of the embodiment of the application is as follows:

the water pump 13 starts to pump the backflushing wastewater in the ultrafiltration unit into the filter cover 22 through the water return pipe 12, and the filter cover 22 filters the backflushing wastewater and filters impurities out in the placing cavity 24. The filtered backflushing wastewater enters a treatment tank 21, a precipitator is added into the backflushing wastewater in the treatment tank 21 through an adding pipe 17, a backflushing pump 14 is started to pump supernatant liquor of the backflushing wastewater after chemical precipitation into a backflushing pipe 11, after the supernatant liquor is pumped, a baffle 26 and a baffle ring 19 are removed, a driving motor 281 is started to drive a push plate 27 to move, and impurities in a placing cavity 24 enter a cleaning pipe 25 through a waste outlet 15; at the same time, the push plate 27 moves to drive the scraper 43 to move so as to scrape off the sediment on the bottom wall of the treatment tank 21 and drop the sediment into the cleaning pipe 25 along the bottom wall of the treatment tank 21 through the collecting hole 18 to be discharged together with the impurities. Thereby completing the clean treatment and the recycling of the backflushing wastewater.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A water recycling device in an ultrafiltration system is characterized in that: including frame (1), be provided with back-flushing pipe (11) and wet return (12) of being connected with ultrafiltration unit on frame (1), back-flushing pipe (11) are used for leading to water in the ultrafiltration unit, wet return (12) are used for deriving the recoil waste water of production in the ultrafiltration unit, be provided with treatment mechanism (2) that the recoil waste water that is used for wet return (12) to lead back carries out the processing on frame (1), treatment mechanism (2) all communicate with back-flushing pipe (11) and wet return (12).

2. The apparatus for reusing water in an ultrafiltration system according to claim 1, wherein: the processing means (2) comprises:

the device comprises a frame (1), a treatment tank (21), a flushing pump and a water suction pump (13), wherein the treatment tank (21) is arranged on the frame (1), and the flushing pump is communicated with a back flushing pipe (11) and the water suction pump (13) is communicated with a water return pipe (12);

one end of the return pipe (12), which is far away from the ultrafiltration unit, vertically extends upwards into the treatment tank (21), the filter cover (22) is sleeved on the return pipe (12), the water outlet end of the return pipe (12) vertically extends upwards into the filter cover (22), a placing cavity (24) is formed between the water outlet end of the return pipe (12) and the inner side wall of the filter cover (22), and impurities filtered by the filter cover (22) are accumulated in the placing cavity (24);

a cleaning assembly (23), wherein the cleaning assembly (23) is used for cleaning impurities in the placing cavity (24).

3. The water recycling device in ultrafiltration system according to claim 2, wherein: the cleaning assembly (23) comprises:

the cleaning device comprises a cleaning pipe (25), wherein a vertical waste discharge hole (15) is formed in the inner bottom wall of the filter cover (22), the cleaning pipe (25) is arranged on the treatment tank (21) and is communicated with the waste discharge hole (15), and the cleaning pipe (25) is used for discharging impurities;

the baffle (26) is horizontally arranged on the filter cover (22) in a sliding manner and shields the waste outlet (15);

the push plate (27), the said push plate (27) is slipped and set up on the filter mantle (22) and located and placed in the cavity (24);

the driving piece (28) is used for driving the push plate (27) to move so as to push the impurities into the waste hole (15).

4. A water reuse apparatus in ultrafiltration system according to claim 3, wherein: the drive member (28) comprises:

a drive motor (281), wherein the drive motor (281) is arranged on the filter cover (22);

one end of the driving rod (282) is arranged on the push plate (27), and the other end of the driving rod (282) is connected with an output shaft of the driving motor (281).

5. The water recycling device in ultrafiltration system according to claim 3, wherein: the machine is characterized in that a raw material box containing a precipitator is arranged on the machine frame (1), an adding pipe (17) communicated with the interior of the raw material box is arranged on the processing groove (21), and a switch valve is arranged on the adding pipe (17).

6. The apparatus for reusing water in ultrafiltration system according to claim 5, wherein: diapire is the obconic in processing tank (21), highly being less than height all around of diapire center department in processing tank (21), clearance pipe (25) pipe diameter is greater than wet return (12) pipe diameter, wet return (12) are located inside clearance pipe (25), set up collection hole (18) that supply the precipitate to get into on clearance pipe (25) lateral wall, vertical sliding is provided with and blocks ring (19) that collection hole (18) were blockked on clearance pipe (25).

7. The water recycling device in ultrafiltration system according to claim 6, wherein: be provided with on processing tank (21) and be used for scraping the miscellaneous subassembly of scraping (4) of the sediment on the bottom wall in processing tank (21), scrape miscellaneous subassembly (4) and include:

the rotating ring (41) is rotatably sleeved on the outer side wall of the cleaning pipe (25), and the top end of the rotating ring (41) vertically penetrates through the bottom surface of the filter cover (22) upwards and is fixedly connected with the push plate (27);

a mounting rod (42), the mounting rod (42) being disposed on the swivel (41);

a scraper (43), wherein the scraper (43) is arranged on the mounting rod (42) and is abutted against the inner bottom wall of the processing groove (21).

8. A water reuse apparatus in ultrafiltration system according to claim 3, wherein: vertical vibrating strips (221) are arranged on the inner side wall of the filter cover (22), and the push plate (27) can collide with the vibrating strips (221) to drive the filter cover (22) to vibrate when moving up from the vibrating strips (221).

9. The water recycling device in ultrafiltration system according to claim 7, wherein: be provided with on clearance pipe (25) and carry out spacing subassembly (3) to the vertical position that keeps off ring (19), spacing subassembly (3) include:

the outer side wall of the cleaning pipe (25) is provided with a horizontal sliding groove (34), and the limiting spring (31) is arranged on the sliding groove (34);

the limiting block (32), an inserting hole (33) which horizontally penetrates through the side wall of the retaining ring (19) is formed in the retaining ring (19), when the retaining ring (19) blocks the collecting hole (18), the inserting hole (33) is abutted to the outer side wall of the cleaning pipe (25), the limiting block (32) is horizontally arranged on the sliding groove (34) in a sliding mode and is connected with the limiting spring (31), and when the retaining ring (19) is removed from the collecting hole (18), the limiting block (32) penetrates out of the sliding groove (34) partially under the action of the limiting spring (31) and is matched with the inserting hole (33) in an inserting mode.

10. The water recycling device in ultrafiltration system according to claim 9, wherein: the lower side wall of the outer part of the limiting block (32) penetrating through the sliding groove (34) is provided with a circular arc-shaped guide surface (35), and the height of one side, far away from the limiting spring (31), of the guide surface (35) is higher than the height of one side, close to the limiting spring (31).