Ultrafiltration membrane rainwater recycling device

Abstract

The utility model provides an ultrafiltration membrane rainwater recovery treatment device, which relates to the field of rainwater recovery treatment and comprises a rainwater tank, a flocculation component is arranged on one side of the rainwater tank, a stirring component is arranged on one side of the flocculation component, a filtering component is arranged on one side of the flocculation component, an aeration component is arranged on one side of the flocculation component, and the aeration component is arranged on the other side of the flocculation component. According to the device, the flocculation assembly and the stirring assembly are arranged, when the device is used, a flocculating agent is added into rainwater through the flocculation assembly, impurities contained in the rainwater are flocculated, then the rainwater is stirred at a low speed through the stirring assembly, and the efficiency of the flocculating agent is improved; and most impurities contained in the rainwater can be flocculated and neutralized, so that the filtering effect of subsequent ultrafiltration treatment is improved.

Description

Technical Field

[0001] The utility model relates to the field of rainwater recycling and treatment, and specifically, to an ultrafiltration membrane rainwater recycling and treatment device. Background Technique

[0002] With the rapid development of cities, the problem of water resource shortage has gradually emerged. As unconventional water, rainwater is the strongest supplement in urban life. The ultrafiltration process is often applied to the treatment of drinking water and sewage, but there is not much research on using the ultrafiltration process to treat rainwater.

[0003] After retrieval, in the prior art, the Chinese patent with the patent publication number CN202936269U discloses an "ultrafiltration membrane rainwater recycling and treatment device". This ultrafiltration device of the utility model uses a hollow fiber membrane with a relatively large membrane area per unit area. Ultrafiltration is carried out under normal temperature and low pressure. It has the advantages of low energy consumption, high filtration accuracy, large water production, strong anti-fouling ability, etc., and can effectively filter out bacteria, colloids, suspended solids, and macromolecules in water. However, there are still the following defects: In the actual use process, due to the large amount of impurities contained in rainwater, filtering only through the ultrafiltration membrane cannot completely separate the impurities in the rainwater, resulting in poor filtering effect and unable to reach the ideal filtering state.

[0004] Therefore, we make improvements on this and propose an ultrafiltration membrane rainwater recycling and treatment device. Summary of the Invention

[0005] The purpose of the utility model is to address the current situation that due to the large amount of impurities contained in rainwater, filtering only through the ultrafiltration membrane cannot completely separate the impurities in the rainwater, resulting in poor filtering effect and unable to reach the ideal filtering state.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] An ultrafiltration membrane rainwater recycling and treatment device to improve the above problems.

[0008] Specifically, the utility model is as follows:

[0009] It includes a rainwater tank, on one side of the rainwater tank, there is a flocculation component, on one side of the flocculation component, there is a stirring component, on one side of the flocculation component, there is a filtering component, on one side of the flocculation component, there is an aeration component, and on one side of the filtering component, there is an anti-flushing component;

[0010] The flocculation assembly includes a water inlet pipe, a first water conduit, a transport pump, a flocculation tank, a workbench, and a mixing port. The water inlet pipe is arranged at the top of the rainwater tank and is communicated with an external rainwater collector. One end of the first water conduit is arranged inside the rainwater tank. The transport pump is arranged at the top of the rainwater tank and is used in cooperation with the first water conduit. The flocculation tank is arranged at one end of the first water conduit away from the rainwater tank and is communicated with the first water conduit. The workbench is arranged at the bottom of the flocculation tank. The mixing port is arranged at the top of the flocculation tank.

[0011] As a preferred technical solution of the present utility model, the stirring assembly includes a motor, a rotating rod, and stirring rods. The rotating rod is fixedly connected to the output end of the motor and is rotatably connected inside the flocculation tank. A plurality of the stirring rods are fixedly connected to one side of the rotating rod.

[0012] As a preferred technical solution of the present utility model, the filtration assembly includes a second water conduit, a first switching valve, a filtration tank, support columns, a third water conduit, a water storage tank, a water extraction pump, a filtration chamber, and an ultrafiltration membrane. One end of the second water conduit is arranged at the bottom of the flocculation tank. The first switching valve is arranged on one side of the second water conduit. The filtration tank is arranged below one end of the second water conduit away from the flocculation tank. The support columns are movably connected to one side of the filtration tank. The third water conduit is arranged at the top of the support columns and one end is arranged above the filtration tank. The water storage tank is arranged on one side of the third water conduit away from the filtration tank. The water extraction pump is arranged at the top of the support columns and is used in cooperation with the third water conduit. The filtration chamber is arranged at one end of the third water conduit close to the filtration tank. The ultrafiltration membrane is arranged inside the filtration chamber.

[0013] As a preferred technical solution of the present utility model, the aeration assembly includes an aeration pump, an aeration pipe, and an aeration head. The aeration pump is arranged at the bottom of the filtration tank. One end of the aeration pipe is arranged at the output end of the aeration pump and the other end is arranged inside the filtration tank. The aeration head is arranged at the end of the aeration pipe away from the aeration pump.

[0014] As a preferred technical solution of the present utility model, the backwashing assembly includes a fourth water conduit, a backwashing suction pump, and second switching valves. One end of the fourth water conduit is arranged inside the water storage tank and the other end is arranged inside the third water conduit and is communicated with the third water conduit. The backwashing suction pump is arranged on one side of the fourth water conduit and is used in cooperation with the fourth water conduit. Two of the second switching valves are arranged on one side of the fourth water conduit and are used in cooperation with the backwashing suction pump.

[0015] As a preferred technical solution of the present utility model, a third switching valve for controlling water inlet is arranged on one side of the water inlet pipe.

[0016] As a preferred technical solution of the present utility model, a fourth switch valve is provided on one side of the third water conduit, the number of the fourth switch valves is two, and a vacuum pressure gauge is provided on one side of the third water conduit.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the solution of the present utility model:

[0019] 1. By providing a flocculation component and a stirring component, when in use, a flocculant is added to the rainwater through the flocculation component to flocculate the impurities contained in the rainwater, and then through the stirring component, the rainwater is slowly stirred to improve the efficiency of the flocculant, so that most of the impurities contained in the rainwater can be flocculated and neutralized first, improving the filtering effect of subsequent ultrafiltration treatment;

[0020] 2. By providing a filtering component, an aeration component and a backwashing component, when in use, the filtering component can perform ultrafiltration operation on the rainwater mixed with the flocculant, then the aeration component can improve the ultrafiltration effect, and through the backwashing component, the ultrafiltered rainwater can flow reversely to perform ultrafiltration operation again, improving the filtering effect of the rainwater and solving the problem of poor filtering effect of rainwater in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an ultrafiltration membrane rainwater recycling and treatment device provided by the present utility model;

[0022] Figure 2 is a right view of an ultrafiltration membrane rainwater recycling and treatment device provided by the present utility model;

[0023] Figure 3 is an ultrafiltration membrane rainwater recycling and treatment device provided by the present utility model Figure 2 a schematic perspective sectional structure diagram at A-A in;

[0024] Figure 4 is an ultrafiltration membrane rainwater recycling and treatment device provided by the present utility model Figure 3 a partial structure diagram in;

[0025] Figure 5 is an ultrafiltration membrane rainwater recycling and treatment device provided by the present utility model Figure 3 a partial structure diagram in.

[0026] Labels in the figure:

[0027] 1. Rainwater tank; 2. Flocculation component; 3. Stirring component; 4. Filtration component; 5. Aeration component; 6. Backwashing component; 201. Water inlet pipe; 202. First water conduit; 203. First water pump; 204. Flocculation tank; 205. Workbench; 206. Mixing port; 301. Motor; 302. Rotating rod; 303. Stirring rod; 401. Second water conduit; 402. First switch valve; 403. Filtration tank; 404. Support column; 405. Third water conduit; 406. Water storage tank; 407. Water pump; 408. Filtration chamber; 409. Ultrafiltration membrane; 501. Aeration pump; 502. Aeration pipe; 503. Aeration head; 601. Fourth water conduit; 602. Backwashing suction pump; 603. Second switch valve; 7. Third switch valve; 8. Fourth switch valve; 9. Vacuum pressure gauge. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0029] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, this embodiment provides an ultrafiltration membrane rainwater recycling and treatment device, including a rainwater tank 1, a flocculation component 2 is arranged on one side of the rainwater tank 1, a stirring component 3 is arranged on one side of the flocculation component 2, a filtration component 4 is arranged on one side of the flocculation component 2, an aeration component 5 is arranged on one side of the flocculation component 2, and a backwashing component 6 is arranged on one side of the filtration component 4;

[0033] The flocculation assembly 2 includes a water inlet pipe 201, a first water conduit 202, a transfer pump 203, a flocculation tank 204, a workbench 205 and a mixing port 206. The water inlet pipe 201 is arranged at the top of the rainwater tank 1 and is connected to an external rainwater collector. One end of the first water conduit 202 is arranged inside the rainwater tank 1. The transfer pump 203 is arranged at the top of the rainwater tank 1 and is used in cooperation with the first water conduit 202. The flocculation tank 204 is arranged at one end of the first water conduit 202 away from the rainwater tank 1 and is connected to the first water conduit 202. The workbench 205 is arranged at the bottom of the flocculation tank 204. The mixing port 206 is arranged at the top of the flocculation tank 204. During use, the water inlet pipe 201 is connected to the external rainwater collector, and rainwater is guided into the rainwater tank 1 through the water inlet pipe 201. Then, the transfer pump 203 is started, and the rainwater inside the rainwater tank 1 is pumped into the flocculation tank 204 through the first water conduit 202. Then, a flocculant is put into the flocculation tank 204 through the mixing port 206 to perform a flocculation operation on the rainwater inside the flocculation tank 204.

[0034] As Figure 4 shown, as a preferred embodiment, on the basis of the above method, further, the stirring assembly 3 includes a motor 301, a rotating rod 302 and stirring rods 303. The rotating rod 302 is fixedly connected to the output end of the motor 301 and is rotatably connected inside the flocculation tank 204. A plurality of stirring rods 303 are fixedly connected to one side of the rotating rod 302. During use, the motor 301 is started to drive the rotating rod 302 to rotate, driving the stirring rods 303 to rotate inside the flocculation tank 204 to stir the rainwater added with the flocculant, improving the flocculation efficiency.

[0035] As Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the filtering component 4 includes a second water conduit 401, a first switching valve 402, a filtering tank 403, a support column 404, a third water conduit 405, a water storage tank 406, a water pump 407, a filtering chamber 408 and an ultrafiltration membrane 409. One end of the second water conduit 401 is arranged at the bottom of the flocculation tank 204. The first switching valve 402 is arranged on one side of the second water conduit 401. The filtering tank 403 is arranged below the end of the second water conduit 401 away from the flocculation tank 204. The support column 404 is movably connected to one side of the filtering tank 403. The third water conduit 405 is arranged at the top of the support column 404 and one end thereof is arranged above the filtering tank 403. The water storage tank 406 is arranged on the side of the third water conduit 405 away from the filtering tank 403. The water pump 407 is arranged at the top of the support column 404 and is used in cooperation with the third water conduit 405. The filtering chamber 408 is arranged at one end of the third water conduit 405 close to the filtering tank 403. The ultrafiltration membrane 409 is arranged inside the filtering chamber 408. When in use, after the rainwater in the flocculation tank 204 is flocculated and treated, by opening the first switching valve 402, the rainwater in the flocculation tank 204 enters the inside of the filtering tank 403 through the second water conduit 401. Then the water pump 407 is started to drive the rainwater inside the filtering tank 403 into the inside of the filtering chamber 408 and then filtered through the ultrafiltration membrane 409, and then enters the inside of the water storage tank 406 through the third water conduit 405 for storage, achieving the effect of completely filtering the rainwater.

[0036] As Figure 4 shown, as a preferred embodiment, on the basis of the above method, further, the aeration component 5 includes an aeration pump 501, an aeration pipe 502 and an aeration head 503. The aeration pump 501 is arranged at the bottom of the filtering tank 403. One end of the aeration pipe 502 is arranged at the output end of the aeration pump 501 and the other end is arranged inside the filtering tank 403. The aeration head 503 is arranged at the end of the aeration pipe 502 away from the aeration pump 501. When in use, the aeration pump 501 is started, and the aeration pump 501 aerates the inside of the filtering tank 403 through the aeration pipe 502 and the aeration head 503, which can improve the ultrafiltration effect.

[0037] As Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the backwashing assembly 6 includes a fourth water conduit 601, a backwashing suction pump 602, and a second switching valve 603. One end of the fourth water conduit 601 is disposed inside the water storage tank 406 and the other end is disposed inside the third water conduit 405 and is in communication with the third water conduit 405. The backwashing suction pump 602 is disposed on one side of the fourth water conduit 601 and is used in cooperation with the fourth water conduit 601. Two second switching valves 603 are disposed on one side of the fourth water conduit 601 and are used in cooperation with the backwashing suction pump 602. When in use, the second switching valve 603 is opened, and then the backwashing suction pump 602 is started, which can transport the water source inside the water storage tank 406 to the inside of the third water conduit 405 again, and then pass through the ultrafiltration membrane 409 again for filtration, so that two ultrafiltrations are performed and the filtration effect is better.

[0038] As Figure 4 shown, as a preferred embodiment, on the basis of the above method, further, a third switching valve 7 for controlling the water inflow is disposed on one side of the water inlet pipe 201. When in use, the third switching valve 7 can control whether rainwater can enter the rainwater tank 1.

[0039] As Figure 5 shown, as a preferred embodiment, on the basis of the above method, further, a fourth switching valve 8 is disposed on one side of the third water conduit 405. The number of the fourth switching valves 8 is two. A vacuum pressure gauge 9 is disposed on one side of the third water conduit 405. When in use, the internal pressure of the third water conduit 405 can be monitored through the two fourth switching valves 8 and the vacuum pressure gauge 9, improving safety.

[0040] Specifically, when the ultrafiltration membrane rainwater recycling and treatment device is in use: Connect the water inlet pipe 201 to an external rainwater collector, and direct the rainwater through the water inlet pipe 201 into the interior of the rainwater tank 1. Then start the transfer pump 203, and pump the rainwater inside the rainwater tank 1 into the interior of the flocculation tank 204 through the first water guide pipe 202. Then add a flocculant into the interior of the flocculation tank 204 through the mixing port 206 to perform flocculation operation on the rainwater inside the flocculation tank 204. Start the motor 301 to drive the rotation of the rotating rod 302, and drive the stirring rod 303 to rotate inside the flocculation tank 204 to stir the rainwater with the added flocculant, improving the flocculation efficiency. When the flocculation treatment of the rainwater inside the flocculation tank 204 is completed, by opening the first switch valve 402, the rainwater inside the flocculation tank 204 enters the interior of the filtration tank 403 through the second water guide pipe 401. Then start the water extraction pump 407 to drive the rainwater inside the filtration tank 403 into the interior of the filtration chamber 408 and then filter it through the ultrafiltration membrane 409, and then enter the interior of the water storage tank 406 through the third water guide pipe 405 for storage, achieving the effect of completely filtering the rainwater. Start the aeration pump 501, and the aeration pump 501 aerates the interior of the filtration tank 403 through the aeration pipe 502 and the aeration head 503, which can improve the ultrafiltration effect. Open the second switch valve 603, and then start the backwashing suction pump 602, which can transport the water source inside the water storage tank 406 back into the interior of the third water guide pipe 405, and then filter it through the ultrafiltration membrane 409 again, making the two ultrafiltration processes have a better filtration effect.

[0041] All technical features in this embodiment can be freely combined according to actual needs.

[0042] The above embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. An ultrafiltration membrane rainwater recovery and treatment device, comprising a rainwater tank (1), characterized in that: A flocculation component (2) is provided on one side of the rainwater tank (1), a stirring component (3) is provided on one side of the flocculation component (2), a filtering component (4) is provided on one side of the flocculation component (2), an aeration component (5) is provided on one side of the flocculation component (2), and a backwashing component (6) is provided on one side of the filtering component (4); The flocculation assembly (2) comprises a water inlet pipe (201), a first water conduit (202), a transport pump (203), a flocculation tank (204), a workbench (205) and a mixing port (206); the water inlet pipe (201) is arranged at the top of the rainwater tank (1) and is connected to an external rainwater collector; one end of the first water conduit (202) is arranged inside the rainwater tank (1); the transport pump (203) is arranged at the top of the rainwater tank (1) and is used in conjunction with the first water conduit (202); the flocculation tank (204) is arranged at one end of the first water conduit (202) away from the rainwater tank (1) and is connected to the first water conduit (202); the workbench (205) is arranged at the bottom of the flocculation tank (204); and the mixing port (206) is arranged at the top of the flocculation tank (204).

2. The ultrafiltration membrane rainwater recycling and treatment device according to claim 1 is characterized in that: The stirring assembly (3) comprises a motor (301), a rotating rod (302) and a stirring rod (303); the rotating rod (302) is fixedly connected to the output end of the motor (301) and is rotatably connected to the inside of the flocculation tank (204); a plurality of stirring rods (303) are fixedly connected to one side of the rotating rod (302).

3. The ultrafiltration membrane rainwater recycling and treatment device according to claim 1 is characterized in that: The filtering assembly (4) comprises a second water pipe (401), a first switch valve (402), a filter tank (403), a support column (404), a third water pipe (405), a water storage tank (406), a water pump (407), a filter chamber (408) and an ultrafiltration membrane (409); one end of the second water pipe (401) is arranged at the bottom of the flocculation tank (204); the first switch valve (402) is arranged at one side of the second water pipe (401); the filter tank (403) is arranged below the end of the second water pipe (401) away from the flocculation tank (204); the support column ( The support column (404) is movably connected to one side of the filter tank (403); the third water pipe (405) is arranged on the top of the support column (404) and one end is arranged above the filter tank (403); the water storage tank (406) is arranged on the side of the third water pipe (405) away from the filter tank (403); the water pump (407) is arranged on the top of the support column (404) and is used in conjunction with the third water pipe (405); the filter chamber (408) is arranged at one end of the third water pipe (405) close to the filter tank (403); and the ultrafiltration membrane (409) is arranged inside the filter chamber (408).

4. The ultrafiltration membrane rainwater recycling and treatment device according to claim 1, characterized in that: The aeration assembly (5) comprises an aeration pump (501), an aeration pipe (502) and an aeration head (503); the aeration pump (501) is arranged at the bottom of the filter tank (403); one end of the aeration pipe (502) is arranged at the output end of the aeration pump (501) and the other end is arranged inside the filter tank (403); and the aeration head (503) is arranged at one end of the aeration pipe (502) away from the aeration pump (501).

5. The ultrafiltration membrane rainwater recycling and treatment device according to claim 1 is characterized in that: The backwashing assembly (6) comprises a fourth water pipe (601), a backwashing suction pump (602) and a second switch valve (603); one end of the fourth water pipe (601) is arranged inside the water storage tank (406) and the other end is arranged inside the third water pipe (405) and is connected to the third water pipe (405); the backwashing suction pump (602) is arranged on one side of the fourth water pipe (601) and is used in conjunction with the fourth water pipe (601); and the two second switch valves (603) are arranged on one side of the fourth water pipe (601) and are used in conjunction with the backwashing suction pump (602).

6. The ultrafiltration membrane rainwater recycling and treatment device according to claim 1, characterized in that: A third switch valve (7) for controlling water inflow is provided on one side of the water inlet pipe (201).

7. The ultrafiltration membrane rainwater recycling and treatment device according to claim 3 is characterized in that: A fourth switch valve (8) is provided on one side of the third water conduit (405), and the number of the fourth switch valves (8) is two. A vacuum pressure gauge (9) is provided on one side of the third water conduit (405).

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