Water pollution treatment device for fiber membrane material production

Abstract

The present invention discloses a fiber membrane material production water pollution treatment apparatus, and relates to the technical field of water pollution treatment, the fiber membrane material production water pollution treatment apparatus comprises: a sewage pool, an overhead cabin is fixedly arranged in the sewage pool, a rectangular cabin hole is formed in the center of the overhead cabin, and a plurality of RO membrane filtration groups which are in a linear array and are distributed close to the cross section of the hole are fixedly mounted in the rectangular cabin hole; the aeration disc pipe network is erected above the RO membrane filtering group, and the aeration direction of the aeration disc pipe network is upward; the water pumps are distributed around the cross section of the end opening of the sewage pool, pipe openings of water inlet pipes of the water pumps are distributed in the position of one half of the vertical height of the sewage pool, and water outlet pipes of the water pumps are located at the bottoms of the rectangular cabin holes. According to the invention, the accumulation design is added below the RO membrane filtration group, the structure is utilized to guide water flow to flow, and accumulation is formed through confluence, choked flow and the like formed by the structural design, so that the content of particulate matters in liquid passing through the RO membrane filtration group is reduced, and the aim of prolonging the washing time interval of the RO membrane filtration group is fulfilled.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution treatment, and particularly to a water pollution treatment device for the production of fiber membrane materials. Background Art

[0002] The sewage obtained after the production of fiber membrane materials needs to go through pretreatment (pH adjustment and cleaning of pollutants floating on the water surface) - flocculation treatment - biological treatment (such as activated sludge method, etc.) - ultrafiltration (UF) or reverse osmosis (RO) - special pollutant treatment, and sludge treatment. Reference can be made to the Chinese published patent, publication number CN104815565A, for a preparation method of a cellulose composite membrane for adsorbing heavy metal ions.

[0003] In the prior art including the above patent, ultrafiltration (UF) or reverse osmosis (RO) in the process filters tiny and water-insoluble particulate matters in the liquid. Under the aeration of the aeration disk, the liquid flows upward, and the particulate matters come into contact with the ultrafiltration (UF) or reverse osmosis (RO) and are adsorbed during the flowing process. After a period of time, a large amount of particulate matters will float on the ultrafiltration (UF) or reverse osmosis (RO). At this time, flushing is required, otherwise it will affect the subsequent sewage treatment effect. Therefore, in daily use, the ultrafiltration (UF) or reverse osmosis (RO) needs to be inflated regularly. Therefore, how to increase the accumulation effect in the water cycle formed by aeration to minimize the particulate matter content in the liquid passing through the ultrafiltration (UF) or reverse osmosis (RO) can, to a certain extent, extend the time interval between flushes of the ultrafiltration (UF) or reverse osmosis (RO), and hopefully a good solution can be obtained. Summary of the Invention

[0004] The purpose of the present invention is to provide a water pollution treatment device for the production of fiber membrane materials to solve the above problems.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A water pollution treatment device for the production of fiber membrane materials, comprising:

[0006] A sewage tank, in which an overhead cabin is fixedly arranged. A rectangular cabin hole is opened in the center of the overhead cabin, and a plurality of RO membrane filtration groups are fixedly installed in the rectangular cabin hole in a linear array and distributed close to the orifice cross-section;

[0007] An aeration disk pipe network, which is erected above the RO membrane filtration group and the aeration direction is upward;

[0008] A plurality of water pumps distributed around the cross-section of the sewage tank port. The pipe orifice of the water inlet pipe of the water pump is distributed at half of the vertical height of the sewage tank, and the outlet pipe is located at the bottom of the rectangular cabin hole;

[0009] An arc-shaped dome cover is fixedly installed inside the rectangular cabin hole, and the rectangular cabin hole is divided into a first space and a second space by the arc-shaped dome cover;

[0010] The first space and the second space are communicated through a through hole opened at the top of the arc-shaped dome cover.

[0011] Preferably, the RO membrane filtration group includes a rectangular frame and RO membrane elements, and the RO membrane elements are arranged in an array inside the rectangular frame;

[0012] The RO membrane element includes an upper disc body and a lower disc body, and a plurality of RO membrane bodies are fixedly installed between the upper disc body and the lower disc body.

[0013] Preferably, the RO membrane body is composed of a plurality of ring layers, and each ring layer is composed of a plurality of RO membrane rods distributed in a circumferential array;

[0014] The RO membrane rod includes a spiral rod member, and a plurality of strands of RO membrane belts are wound around the spiral rod member, and the plurality of strands of RO membrane belts wound around the spiral rod member are arranged loosely;

[0015] A round hole is opened on the lower disc body, and the round hole is communicated with the inside of the innermost ring layer.

[0016] Preferably, the spiral directions of the spiral rod members in two adjacent ring layers are opposite, and a predetermined distance is maintained between each adjacent ring layer.

[0017] Preferably, the number of RO membrane rods in each ring layer decreases in multiples from the outermost layer to the innermost layer.

[0018] Preferably, an arc-shaped guiding member is arranged at the inner bottom of the first space, and the arc-shaped guiding member is used to guide the water outlet of the water outlet pipe to the inner wall of the arc-shaped dome cover;

[0019] A circular arc-shaped guiding cover is fixedly installed on the inner wall of the arc-shaped dome cover, and the extension line of the inner wall of the circular arc-shaped guiding cover is coaxial with the extension line of the outer wall of the arc-shaped guiding member facing the first space;

[0020] A return accommodation area with a sunken circular arc angle structure is formed between the arc-shaped guiding member and the bottom of the first space.

[0021] Preferably, no less than three circular ring convex portions are fixedly installed at the bottom of the first space, and the heights of the three circular ring convex portions increase with the approach to the center of the circle;

[0022] The end of the circular arc-shaped guiding cover and the arc top of one of the circular ring convex portions are in the same vertical horizontal plane, and the distance between them forms a gap flow channel.

[0023] Preferably, with the arc top as the center, one side of the circular ring convex part is an arc slope, and the other side is a fillet slope surface;

[0024] The arc surface of the circular arc guiding cover is tangent to the slope surface of the arc slope.

[0025] Preferably, an overflow tank is fixedly installed at the top of the arc-shaped dome cover, a column is fixedly installed at the bottom of the first space, the column extends into the second space, and a frustum part is fixedly arranged at its end;

[0026] The inner side of the overflow tank is a frustum-shaped groove, the frustum-shaped groove has a narrow opening and a wide opening, and the narrow opening is communicated with the through hole;

[0027] The frustum part is located in the frustum-shaped groove, and a predetermined gap is maintained between the two to form an overflow tank channel.

[0028] Preferably, a sewage discharge pipe network is also laid at the bottom of the sewage tank, the sewage discharge pipe network includes a plurality of drainage pipes, and the drainage pipes are respectively communicated at the reflux accommodation area and near the fillet slope surface of the circular ring convex part.

[0029] In the above technical solution, a water pollution treatment device for the production of fiber membrane materials provided by the present invention has the following beneficial effects: After the water pump is started, the liquid in the middle of the sewage tank is sucked up and then steadily discharged into the rectangular cabin hole. The liquid gathers under the arc-shaped dome cover, and a vortex is formed accordingly. By using the unique accumulation effect of the vortex, the particulate matter in the liquid gradually deposits in the first space. And the liquid that overflows through the through hole will surge upward under the airflow generated by the aeration disc pipe network and is finely filtered twice by the RO membrane filtration group. In this process, a confluence link of the arc-shaped dome cover is added in front of the RO membrane filtration group. The liquid is pumped into the first space separated by the arc-shaped dome cover, and the strong discharge force of the water outlet pipe causes the liquid to form a vortex in the first space. It can effectively reduce the content of particulate matter in the liquid entering the RO membrane filtration group, thereby extending the flushing time interval of the RO membrane filtration group. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of the whole provided by the embodiment of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the RO membrane filtration group and the overhead cabin provided by the embodiment of the present invention;

[0033] Figure 3 The explosion structure schematic diagram provided by the embodiment of the present invention Figure 2 ;

[0034] Figure 4 The explosion structure schematic diagram of the RO membrane filtration group provided by the embodiment of the present invention

[0035] Figure 5 The cross-sectional structure schematic diagram of the RO membrane element provided by the embodiment of the present invention

[0036] Figure 6 The cross-sectional structure schematic diagram of the RO membrane rod provided by the embodiment of the present invention

[0037] Figure 7 The implementation plane structure schematic diagram of the water pollution treatment device for the production of fiber membrane materials provided by the embodiment of the present invention

[0038] Figure 8 The related structure schematic diagram of the arc-shaped dome cover provided by the embodiment of the present invention

[0039] Figure 9 The one provided by the embodiment of the present invention Figure 8 Local structure schematic diagram;

[0040] Figure 10 The schematic diagram of the circulation structure formed by the arc-shaped dome cover and the side wall of the rectangular hatch hole provided by the embodiment of the present invention

[0041] Explanation of reference numerals:

[0042] 1, sewage tank; 2, overhead cabin; 21, rectangular hatch; 3, RO membrane filtration group; 31, rectangular frame; 321, upper disc body; 322, lower disc body; 323, RO membrane body; 4, aeration disc pipe network; 5, water pump; 6, arc-shaped dome cover; 61, through hole; 62, circular arc guide cover; 63, overflow tank; 64, frustum part; 65, arc guide member; 7, ring convex part; 71, arc slope; 72, rounded slope surface; 8, sewage discharge pipe network; 100, reflux accommodation area; 200, gap flow channel; 300, overflow tank channel; 400, slow flow area. Detailed implementation manners

[0043] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] As shown in Figure 1 -10, a water pollution treatment device for the production of fiber membrane materials includes:

[0045] A sewage tank 1, inside which an overhead cabin 2 is fixedly arranged. A rectangular cabin hole 21 is opened in the center of the overhead cabin 2, and a plurality of RO membrane filtration groups 3 arranged in a linear array and distributed near the cross-section of the hole opening are fixedly installed in the rectangular cabin hole 21;

[0046] An aeration disc pipe network 4, which is erected above the RO membrane filtration group 3 and the aeration direction is upward;

[0047] A plurality of water pumps 5 distributed around the cross-section of the port of the sewage tank 1. The pipe orifice of the water inlet pipe of the water pump 5 is distributed at half of the vertical height of the sewage tank 1, and the outlet pipe is located at the bottom of the rectangular cabin hole 21;

[0048] An arc-shaped dome cover 6 is fixedly installed in the rectangular cabin hole 21, and the rectangular cabin hole 21 is divided into a first space and a second space by the arc-shaped dome cover 6;

[0049] The first space and the second space are communicated through a through hole 61 opened at the top of the arc-shaped dome cover 6.

[0050] Specifically, the sewage tank 1 in the above embodiment is made of concrete pouring, and the overhead cabin 2 is built at the bottom of the sewage tank 1 by piling bricks. The water pump 5 is fixed on the ground and is distributed close to the sewage tank 1. The number of them is at least two. As shown in combination with Figure 7 The pipeline of the water inlet of the water pump 5 here is arranged in the middle of the sewage tank 1, while the pipeline of the water outlet of the water pump 5 extends downward along the inner wall of the sewage tank 1, passes through the overhead cabin 2, and then the outlet of the pipeline is flush with the bottom of the sewage tank 1. And the above pipeline is made of a corrosion-resistant material, such as a plastic pipe like a PVC pipe or other rigid pipe bodies can be used.

[0051] Furthermore, the arc-shaped dome cover 6 in the above embodiment can be a corrosion-resistant rigid composite plastic part, or a stainless steel plate part, or a part integrally formed by concrete. Its cross-section is arc-shaped.

[0052] Moreover, the arc-shaped dome cover 6 in the above embodiment is distributed close to the bottom of the sewage tank 1. In short, the edge of the arc-shaped dome cover 6 is flush with the upper edge of the outlet pipeline. Therefore, under the first space and the second space, the volume of the first space is smaller than the volume of the second space.

[0053] And the pipelines of the multiple outlets in the above embodiment are to be arranged along an inclined direction, so that the strong discharge force of the outlet pipe can cause the liquid to form a vortex in the first space.

[0054] In the above technology, after the water pump 5 is started, the liquid in the middle of the sewage tank 1 is sucked up and steadily discharged into the rectangular hatch 21. The liquid gathers under the arc-shaped dome 6, and a vortex is formed accordingly. By utilizing the unique accumulation effect of the vortex, the particulate matter in the liquid gradually deposits in the first space. The liquid that overflows through the through-hole 61 will surge upward under the airflow generated by the aeration disc pipe network 4 and is secondarily and finely filtered by the RO membrane filter group 3. In this process, a confluence link of the arc-shaped dome 6 is added in front of the RO membrane filter group 3. The liquid is drawn into the first space separated by the arc-shaped dome 6, and the strong discharge force of the outlet pipe causes the liquid to form a vortex in the first space. This can effectively reduce the content of particulate matter in the liquid entering the RO membrane filter group 3, thereby extending the flushing time interval of the RO membrane filter group 3.

[0055] As a further embodiment provided by the present invention, the RO membrane filter group 3 includes a rectangular frame 31 and RO membrane elements, and the RO membrane elements are arranged in an array inside the rectangular frame 31;

[0056] The RO membrane element includes an upper disc body 321 and a lower disc body 322, and a plurality of RO membrane bodies 323 are fixedly installed between the upper disc body 321 and the lower disc body 322.

[0057] Specifically, the RO membrane body 323 in the above embodiment is in a strip shape, a strip shape or a catkin shape, and the number thereof is several, densely distributed between the upper disc body 321 and the lower disc body 322, and the upper disc body 321 and the lower disc body 322 are fixed by welding or by screwing to the rectangular frame 31. Combining Figure 3 and Figure 4 it can be known that the aeration disc pipe network 4 in the embodiment includes parallel pipes and a plurality of aeration discs fixedly connected to the parallel pipes. The aeration direction of the aeration discs here is upward, so as to generate a suction effect, suck the liquid from the bottom upward, and then recycle it to the first space again through the water pump 5.

[0058] As yet another embodiment further provided by the present invention, the RO membrane body 323 is composed of a plurality of ring layers, and each ring layer is composed of a plurality of RO membrane rods arranged in a circumferential array. The RO membrane rod includes a spiral rod member and multiple strands of RO membrane belts wound around the spiral rod member, and the multiple strands of RO membrane belts wound around the spiral rod member are loosely arranged. A round hole is opened on the lower disc body 322, and the round hole is internally connected to the innermost ring layer.

[0059] Specifically, in the embodiment, a corrosion-resistant plastic plate member fixed by screws is installed on the rectangular frame 31, and the lower disc body 322 is embedded in the corrosion-resistant plastic plate member, so that the upward flowing liquid can only enter the RO membrane element through the round hole. Here, the RO membrane body 323 is composed of a plurality of ring layers, and each RO membrane rod forming the ring layer is composed of a spiral rod member and multiple strands of RO membrane belts wound around the spiral rod member. CombiningFigure 6 It can be seen that this kind of surrounding belongs to loose surrounding, not tight surrounding. Its purpose is that when the liquid flows towards the aeration disc pipe network 4 through the RO membrane element, the liquid will fully contact the RO membrane element, so that the RO membrane element adsorbs the particulate matter in the liquid.

[0060] As the optimal embodiment further provided by the present invention, in combination with Figure 5 As shown, the spiral directions of the spiral rods in two adjacent ring layers are opposite, and a predetermined distance is maintained between each adjacent ring layer. By using different spiral directions of the RO membrane rod groups in multiple ring layers, a dense mesh structure is formed, thereby increasing the effect of intercepting particulate matter in the liquid layer by layer.

[0061] It should be noted that the number of RO membrane rods in each ring layer decreases in multiples from the outermost layer to the innermost layer. And this multiple can be a multiple decrease of 1:2, that is, the number of RO membrane rods in the innermost ring layer is the least, and the number of RO membrane rods in the outermost ring layer is the most. Its purpose is: to adopt diffusive filtration, that is, the innermost RO membrane rods first filter the particulate matter in the liquid, and then are successively adsorbed by the second-level ring layer, the third-level ring layer,..., the outermost ring layer, for multi-stage adsorption, maximizing the optimization of the RO membrane adsorption effect. Secondly, the innermost RO membrane rods are adsorbed first. When fully loaded, it will not delay the flow of the liquid in the second-level ring layer. At this time, the second-level ring layer serves as the innermost ring layer to perform adsorption, and so on, thereby maximizing the service time of the RO membrane.

[0062] Secondly, adopting this diffusive filtration can play a role in interception, because as the RO membrane adsorbs, the fluctuations in the liquid flow will also drive a certain amount of particulate matter originally floating on the RO membrane to leave.

[0063] As another embodiment further provided by the present invention, in combination with Figure 7 As shown, an arc guide 65 is provided at the inner bottom of the first space. The arc guide 65 is used to guide the water outlet of the water outlet pipe to the inner wall of the arc dome 6;

[0064] A circular arc guide cover 62 is fixedly installed on the inner wall of the arc dome 6. The extension line of the inner wall of the circular arc guide cover 62 is coaxial with the extension line of the outer wall of the arc guide 65 facing the first space;

[0065] The arc guide 65 and the bottom of the first space form a return accommodation area 100 with a concave arc angle structure.

[0066] Specifically, in the embodiment, when the liquid is pumped to the bottom of the sewage tank 1, the liquid flow will flow along the arc surface of the arc-shaped guide member 65, so as to contact the inner wall of the circular arc-shaped guide cover 62. Due to the strong water flow force, the liquid will flow along the inner wall of the circular arc-shaped guide cover 62 to the outlet of the circular arc-shaped guide cover 62, and then the liquid will be redirected along the inner side wall of the circular arc-shaped guide cover 62 and guided to the side where the arc-shaped guide member 65 is located. At this time, the liquid flow direction is along the outer wall of the arc-shaped guide member 65 towards the first space, thereby driving the internal liquid to form a circulation, as shown in Figure 9 shown.

[0067] When the liquid flows to the reflux accommodation area 100, a reflux will be formed, that is, the liquid will flow along the bottom of the sewage tank 1 towards the axis direction, that is, a small area of reflux will be formed here, thereby forming a pile-up again, so as to carry out the accumulation of particulate matter in the first wave of liquid.

[0068] As another embodiment further provided by the present invention, as shown in Figure 8 shown, at least three circular ring convex portions 7 are fixedly installed at the bottom of the first space. The heights of the three circular ring convex portions 7 increase with the approach to the center of the circle. The end of the circular arc-shaped guide cover 62 and the arc top of one of the circular ring convex portions 7 are in the same vertical horizontal plane, and the gap between them forms a gap flow channel 200.

[0069] Secondly, with the arc top of the circular ring convex portion 7 as the center, one side is an arc-shaped slope 71, and the other side is a rounded corner slope surface 72, and the arc surface of the circular arc-shaped guide cover 62 is tangent to the slope surface of the arc-shaped slope 71.

[0070] Specifically, as shown in Figure 9 shown, the vertical height of the circular ring convex portion 7 in the embodiment increases from the side close to the arc-shaped guide member 65 to the side close to the circular arc-shaped guide cover 62. Because after the liquid is guided by the outer wall of the arc-shaped guide member 65 towards the first space, it flows along the bottom of the sewage tank 1 towards the axis direction. Therefore, during the process, it will also move up along the arc-shaped slope 71 and cross over the circular ring convex portion 7. At this time, the liquid flow rate at the rounded corner slope surface 72 is lower than the liquid flow rate guided by the arc-shaped slope 71, and a small backflow will be formed at the rounded corner slope surface 72, thereby forming a stacking effect here and forming a second wave of stacking.

[0071] Furthermore, the multiple circular ring convex portions 7 in the design can also play a role in blocking the flow, that is, raising the liquid flowing along the bottom of the sewage tank 1 towards the axis direction, thereby reducing the flow speed, which is more conducive to the formation of the stacking effect of the small backflow. And the higher the vertical height of the circular ring convex portion 7, in cooperation with the flow blocking and force discharging of the previous stage or multiple stages of circular ring convex portions 7, the better the stacking effect of the small backflow is formed.

[0072] Furthermore, in the above embodiments, the liquid such as Figure 9 forms a cycle as shown. The distance between the gap flow channel 200 and the bottom of the sewage tank 1 is equal to the vertical height of the circular ring protrusion 7 arranged in the innermost circle. Therefore, the particulate matter content of the liquid entering the cavity formed by the circular arc guiding cover 62 and the circular ring protrusion 7 arranged in the innermost circle through the gap flow channel 200 is greatly reduced. At this time, the flow velocity entering the cavity will be reduced, and the internal liquid will tend to be calm.

[0073] As yet another embodiment further provided by the present invention, as shown in combination with Figure 8 , an overflow tank 63 is fixedly installed at the top of the arc-shaped dome 6. A column is fixedly installed at the bottom of the first space. The column extends into the second space, and a frustum portion 64 is fixedly arranged at its end.

[0074] The inner side of the overflow tank 63 is a frustum-shaped groove, and the frustum-shaped groove has a narrow opening and a wide opening. The narrow opening is communicated with the through hole 61.

[0075] The frustum portion 64 is located in the frustum-shaped groove, and a predetermined gap is maintained between the two to form an overflow channel 300.

[0076] Specifically, as shown in combination with Figure 10 , the liquid located in the cavity will flow upward under the agitation of the aeration disc pipe network 4 and enter the second space through the overflow channel 300. The incoming liquid flows along the overflow channel 300 and thus collides with the inner walls of the RO membrane filtration group 3 and the rectangular cabin hole 21 to form a circulating flow, that is, the slow flow area 400 as shown in Figure 8 . Therefore, during the circulating flow of the liquid, a pile-up will form at the intersection of the arc-shaped dome 6 and the rectangular cabin hole 21, that is, the third wave of pile-up. A circulating flow will also be formed at the intersection of the overflow tank 63 against the inner wall side of the rectangular cabin hole 21 during the circulating flow, so as to pile up again, that is, the fourth wave of pile-up.

[0077] It should be noted that the aeration disc pipe network 4 in the above embodiments is distributed close to the RO membrane filtration group 3.

[0078] As yet another embodiment further provided by the present invention, as shown in combination with Figure 8 , a sewage discharge pipe network 8 is also laid at the bottom of the sewage tank 1. The sewage discharge pipe network 8 includes a plurality of drainage pipes, and the drainage pipes are respectively communicated at the reflux accommodation section 100 and the rounded slope surface 72 close to the circular ring protrusion 7.

[0079] Specifically, a sewage pump is also included in the embodiment. The input end of the sewage pump is communicated with the sewage discharge pipe network 8. Therefore, the sewage pump is regularly driven to suck and discharge the dirt accumulated in the reflux accommodation section 100 and the area of the rounded slope surface 72 close to the circular ring protrusion 7 for further treatment, so as to ensure that the sludge content at the bottom of the sewage tank 1 is at a relatively low level, thereby ensuring the complete formation of each circulating flow and reflux.

[0080] It should be noted that when the sewage pump is running, it can be carried out under the normal sewage treatment process in the sewage tank 1. It can also be carried out by pumping cleaning water into the bottom of the sewage tank 1 for repeated flushing when the operation of the sewage tank 1 is stopped.

[0081] Only some exemplary embodiments of the present invention are described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A water pollution treatment device for the production of fiber membrane materials, characterized in that, Comprising: A sewage tank (1), inside which an overhead cabin (2) is fixedly arranged. A rectangular cabin hole (21) is formed in the center of the overhead cabin (2). A plurality of RO membrane filtration groups (3) are fixedly installed in the rectangular cabin hole (21), arranged in a linear array and distributed near the orifice cross-section. An aeration disc pipe network (4), which is erected above the RO membrane filtration group (3) and has an upward aeration direction. A plurality of water pumps (5) distributed around the cross-section of the port of the sewage tank (1). The inlet pipe orifices of the water pumps (5) are distributed at half of the vertical height of the sewage tank (1), and the outlet pipes are located at the bottom of the rectangular cabin hole (21). An arc-shaped dome cover (6) is fixedly installed in the rectangular cabin hole (21), and the rectangular cabin hole (21) is divided into a first space and a second space by the arc-shaped dome cover (6). The first space and the second space are communicated through a through hole (61) formed in the top of the arc-shaped dome cover (6).

2. The water pollution treatment device for the production of fiber membrane materials according to claim 1, characterized in that, The RO membrane filtration group (3) includes a rectangular frame (31) and RO membrane elements, and the RO membrane elements are arranged in an array inside the rectangular frame (31). The RO membrane element includes an upper disc body (321) and a lower disc body (322), and a plurality of RO membrane bodies (323) are fixedly installed between the upper disc body (321) and the lower disc body (322).

3. A water pollution treatment device for the production of fiber membrane materials according to claim 2, characterized in that, The RO membrane body (323) is composed of a plurality of ring layers, and each ring layer is composed of a plurality of RO membrane rods distributed in a circumferential array. The RO membrane rod includes a spiral rod member, and a plurality of strands of RO membrane belts are wound around the spiral rod member, and the plurality of strands of RO membrane belts wound around the spiral rod member are arranged loosely. A round hole is formed in the lower disc body (322), and the round hole is communicated with the inside of the innermost ring layer.

4. A water pollution treatment device for the production of fiber membrane materials according to claim 3, characterized in that, The spiral directions of the spiral rod members in two adjacent ring layers are opposite, and a predetermined distance is maintained between each adjacent ring layer.

5. The water pollution treatment device for the production of fiber membrane materials according to claim 3, characterized in that, The number of RO membrane rods in each ring layer decreases in multiples from the outermost layer to the innermost layer.

6. The water pollution treatment device for the production of fiber membrane materials according to claim 1, characterized in that, An arc-shaped guiding member (65) is arranged at the inner bottom of the first space, and the arc-shaped guiding member (65) is used to guide the water flowing out of the outlet pipe to the inner wall of the arc-shaped dome cover (6). A circular arc-shaped guiding cover (62) is fixedly installed on the inner wall of the arc-shaped dome cover (6), and the extension line of the inner wall of the circular arc-shaped guiding cover (62) is coaxial with the extension line of the outer wall of the arc-shaped guiding member (65) facing the first space. The arc-shaped guiding member (65) and the bottom of the first space form a reflux accommodating area (100) with a concave arc angle structure.

7. The water pollution treatment device for the production of fiber membrane materials according to claim 6, characterized in that, No less than three circular ring convex parts (7) are fixedly installed at the bottom of the first space, and the heights of the three circular ring convex parts (7) increase with the distance from the center of the circle. The end of the circular arc-shaped guiding cover (62) and the arc top of one of the circular ring convex parts (7) are in the same vertical horizontal plane, and the distance between them forms a gap flow channel (200).

8. The water pollution treatment device for the production of fiber membrane materials according to claim 7, characterized in that, One side of the circular ring convex part (7) is an arc-shaped slope (71) with the arc top as the center, and the other side is a rounded slope surface (72). The arc surface of the circular arc-shaped guiding cover (62) is tangent to the slope surface of the arc-shaped slope (71).

9. A water pollution treatment device for the production of fiber membrane materials according to claim 6, characterized in that, An overflow trough (63) is fixedly installed at the top of the arc-shaped dome cover (6). A column is fixedly installed at the bottom of the first space. The column extends into the second space, and a frustum portion (64) is fixedly arranged at its end; The inner side of the overflow trough (63) is a frustum trough, and the frustum trough has a narrow opening and a wide opening. The narrow opening is communicated with the through hole (61); The frustum portion (64) is located in the frustum trough, and a predetermined gap is maintained between the two to form an overflow trough channel (300).

10. The water pollution treatment device for the production of fiber membrane materials according to claim 1, characterized in that, A sewage discharge pipe network (8) is also laid at the bottom of the sewage pool (1). The sewage discharge pipe network (8) includes a plurality of drainage pipes, and the drainage pipes are respectively communicated at the reflux accommodation area (100) and at the rounded slope surface (72) close to the circular ring protrusion (7).

Images