CN218741296U

CN218741296U - Full-automatic integrated internal pressure type ultrafiltration membrane device for treating high-pollution wastewater

Info

Publication number: CN218741296U
Application number: CN202223330106.7U
Authority: CN
Inventors: 施世照; 施世兵; 胡兵; 简和琴; 龙玉荣
Original assignee: HANGZHOU KAIJIE MEMBRANE SEPARATION TECHNOLOGY CO LTD
Current assignee: HANGZHOU KAIJIE MEMBRANE SEPARATION TECHNOLOGY CO LTD
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-28
Anticipated expiration: 2032-12-09

Abstract

The application relates to a full-automatic integrated internal pressure type ultrafiltration membrane device for treating high-pollution wastewater, which comprises a raw water tank, a raw water pump, an ultrafiltration assembly and a water production tank, wherein the ultrafiltration assembly comprises an ultrafiltration body, a raw water inlet, a raw water outlet and a filtrate outlet; a first branch is arranged between the third valve and the raw water outlet, the first branch is connected between the raw water pump and the first valve, and a second valve is arranged on the first branch; a second branch is arranged between the first valve and the raw water inlet, the second branch is connected to the third valve, and a seventh valve is arranged on the second branch. The raw water inlet and the raw water outlet are sequentially switched according to preset running time to input raw water in a reversed polarity mode, so that sundries attached to inner holes of membrane filaments in the ultrafiltration body are impacted, the ultrafiltration membrane is not prone to being blocked, and the number of times of chemical cleaning is reduced.

Description

Full-automatic integrated internal pressure type ultrafiltration membrane device for high-pollution wastewater treatment

Technical Field

The application relates to the technical field of ultrafiltration membranes, in particular to a full-automatic integrated internal pressure type ultrafiltration membrane device for treating high-pollution wastewater.

Background

The ultrafiltration membrane is a technology for filtering, separating and concentrating a solution by utilizing a membrane, wherein under the action of pressure, a small molecular weight accommodating and solvent in the solution can pass through micropores on the ultrafiltration membrane, and macromolecular solutes, impurities, algae, viruses and the like are retained on the other side of the membrane. However, as the filtration time increases, the amount of impurities accumulated on the ultrafiltration membrane on the water inlet side is much larger than that on the other end, so that the water inlet speed is slow.

The Chinese patent with the application number of CN202122610051.4 discloses an ultrafiltration membrane backwashing device, which comprises a packaging cylinder, wherein an ultrafiltration membrane is arranged in the packaging cylinder; the backwashing component comprises a backwashing pump and a backwashing water inlet pipeline; the backwashing water inlet pipeline is communicated with the backwashing pump and the packaging cylinder; a backwash liquid in the backwash water inlet pipeline is injected into the ultrafiltration membrane, and the backwash liquid permeates out of the ultrafiltration membrane from inside to outside so as to remove impurities attached to membrane pores of the ultrafiltration membrane; the water washing assembly comprises a water washing pipeline, one end of the water washing pipeline is connected with the backwashing pump, and the other end of the water washing pipeline extends into the packaging cylinder; and flushing liquid in the water flushing pipeline flushes the outer surface of the ultrafiltration membrane.

The clean liquid of direct utilization water pump drive washes the milipore filter among the above-mentioned scheme, then can go on after the flow of milipore filter reduces to lead to the frequency of washing very frequent, very easily form a large amount of impacts to the milipore filter, thereby influence the life of milipore filter.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to reduce the frequency of back flush and increase the use frequency of ultrafiltration membrane, the application provides a full-automatic integrated internal pressure formula ultrafiltration membrane device for high pollution wastewater treatment.

The application provides a pair of pressure formula milipore filter device in full-automatic integration for high pollution wastewater handles adopts following technical scheme:

the full-automatic integrated internal pressure type ultrafiltration membrane device for treating the high-pollution wastewater comprises a raw water tank, a raw water pump for driving raw water in the raw water tank to flow, an ultrafiltration component for filtering and a water production tank for storing filtrate, wherein the ultrafiltration component comprises an ultrafiltration body, a raw water inlet arranged at one end of the ultrafiltration body, a raw water outlet arranged at the other end of the ultrafiltration body and a plurality of filtrate outlets arranged on one side of the ultrafiltration body, the water outlet of the raw water pump is connected with the raw water inlet, a first valve is arranged between the raw water pump and the raw water inlet, the raw water outlet is connected with the raw water tank, a third valve is arranged between the raw water outlet and the raw water tank, and the filtrate outlets are all connected with the water production tank;

a first branch is arranged between the third valve and the raw water outlet, the other end of the first branch is connected between the raw water pump and the first valve, and a second valve is arranged on the first branch;

a second branch is arranged between the first valve and the raw water inlet, the other end of the second branch is connected to one end, far away from the ultrafiltration assembly, of the third valve, and a seventh valve is arranged on the second branch.

Through adopting above-mentioned technical scheme, at the in-process that filters raw water, raw water import and raw water export exchange the input raw water of pole of falling according to the good operating time of predetermineeing according to the preface (the pole of falling back raw water import becomes the raw water export promptly, and the raw water export becomes the raw water import) to make the debris that adheres to in the ultrafiltration body on being close to the membrane silk hole of import department receive the impact and be difficult for blockking up the ultrafiltration membrane, reduce the number of times that needs chemical cleaning.

Optionally: a fifth valve is arranged between the filtrate outlet and the water production tank, a third branch is arranged between the fifth valve and the filtrate outlet, one end of the third branch, which is far away from the fifth valve, is communicated with the water production tank, a sixth valve and a back washing pump for driving liquid to flow are arranged on the third branch, and the sixth valve is arranged at one end, which is close to the fifth valve, of the back washing pump;

still be provided with the fourth branch road between first valve and the seventh valve, be provided with the fourth valve on the fourth branch road, the one end that ultrafiltration module was kept away from to the fourth branch road can discharge sewage.

By adopting the technical scheme, the ultrafiltration membrane of the ultrafiltration body is backwashed by the filtered liquid, so that impurities attached to the ultrafiltration membrane are separated from the ultrafiltration membrane and are discharged.

Optionally: and a second pressure gauge is arranged at the filtrate outlet.

By adopting the technical scheme, the pressure of the liquid on the ultrafiltration membrane during backwashing is calculated by the second pressure gauge, so that the pressure on the ultrafiltration membrane is not easy to be overlarge.

Optionally: and a first pressure gauge is arranged at the water outlet of the raw water pump.

Through adopting above-mentioned technical scheme, utilize first manometer to detect the pressure of raw water to the milipore filter in to the filtering process to the pressure that makes the milipore filter bear is difficult too big.

Optionally: and a pressure switch is also arranged at the water outlet of the raw water pump.

By adopting the technical scheme, the water pressure of the raw water is automatically detected by the pressure switch, so that the control mechanism can automatically detect whether the water pressure meets the standard.

Optionally: and a flow valve is arranged at one end of the fifth valve close to the water production tank.

By adopting the technical scheme, the flow valve is utilized to detect the filtering speed of the ultrafiltration body, so that whether the ultrafiltration membrane in the ultrafiltration body needs to be cleaned or not is judged.

Optionally: and a sampling branch is arranged between the fifth valve and the water production tank, and a sampling valve is arranged on the sampling branch.

Through adopting above-mentioned technical scheme, thereby utilize the sample branch road to carry out sample test to filtering off the liquid.

Optionally: still be provided with chemical cleaning mechanism on the ultrafiltration subassembly, chemical cleaning mechanism includes the explosive box and is used for the mobile chemical cleaning pump of drive liquid, the delivery port and the raw water export intercommunication of chemical cleaning pump, be provided with the fifth branch road between seventh valve and the raw water import, the fifth branch road other end and explosive box intercommunication, be provided with the chemical cleaning valve on the fifth branch road.

By adopting the technical scheme, when the impurities attached to the inside of the ultrafiltration membrane cannot be removed lightly by backwashing, the impurities on the ultrafiltration membrane are removed by chemical cleaning, so that the ultrafiltration membrane can be continuously used.

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

1. the raw water inlet and the raw water outlet are sequentially switched according to the preset running time to input raw water by inverting the poles (namely, the raw water inlet is changed into the raw water outlet after the poles are inverted, and the raw water outlet is changed into the raw water inlet), so that impurities are not easy to attach to the ultrafiltration membrane, the frequency of chemical washing of the ultrafiltration membrane is reduced, and the service life of the ultrafiltration membrane is prolonged;

2. the filtered liquid is introduced into the filtrate outlet, so that the interior of the ultrafiltration membrane is backwashed, the ultrafiltration membrane does not need to be disassembled in the backwashing process, and the ultrafiltration membrane is more convenient to clean.

Drawings

Fig. 1 is a schematic view of a liquid flow path according to an embodiment of the present application.

In the figure, 1, a raw water tank; 11. a raw water pump; 12. a first valve; 13. a third valve; 14. a first pressure gauge; 15. a pressure switch; 21. An ultrafiltration body; 22. a raw water inlet; 23. a raw water outlet; 24. a filtrate outlet; 25. a fifth valve; 26. a second pressure gauge; 27. a flow valve; 3. a water production tank; 4. a first branch; 41. a second valve; 5. a second branch circuit; 51. a seventh valve; 6. a third branch; 61. a backwash pump; 62. a sixth valve; 7. a fourth branch; 71. a fourth valve; 8. a sampling branch circuit; 81. a sampling valve; 9. a chemical cleaning mechanism; 91. a medicine storage box; 92. a chemical purge pump; 93. a first chemical purge valve; 94. a fifth branch; 95. a second chemical purge valve.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The application discloses a full-automatic integration internal pressure formula milipore filter device for high pollution wastewater handles, as shown in fig. 1, including the former water tank 1 that is used for storing the liquid that treats processing, the former water pump 11 of the raw water flow in the drive former water tank 1, be used for carrying out filterable ultrafiltration module of raw water and be used for storing the product water tank 3 of the filtrating liquid that filters. The ultrafiltration component comprises an ultrafiltration body 21, a raw water inlet 22, a raw water outlet 23 and two filtrate outlets 24, wherein an ultrafiltration membrane is arranged in the ultrafiltration body 21, the raw water inlet 22 is arranged at one end of the ultrafiltration body 21, the raw water outlet 23 is arranged at the other end of the ultrafiltration body 21, and the two filtrate outlets 24 are arranged on the side wall of the ultrafiltration body 21. The water inlet of the raw water pump 11 is communicated with the raw water tank 1, the water outlet of the raw water pump 11 is communicated with the raw water inlet 22, and a first valve 12 is arranged between the raw water pump 11 and the raw water inlet 22. The raw water outlet 23 is communicated with the raw water tank 1, so that the unfiltered concentrated solution can continuously enter the raw water tank 1 for continuous filtration, and a third valve 13 is arranged between the raw water outlet 23 and the raw water tank 1. The two filtrate outlets 24 are both communicated with the water producing tank 3, and the two filtrate outlets 24 are commonly connected with a fifth valve 25. During the process, the raw water pump 11 drives the raw water to enter the ultrafiltration body 21 through the raw water inlet 22, the ultrafiltration membrane in the ultrafiltration body 21 is used for filtering, the filtered liquid enters the production tank, and the unfiltered liquid flows back to the raw water tank 1.

A first branch 4 is further arranged between the third valve 13 and the raw water outlet 23, the other end of the first branch 4 is connected between the raw water pump 11 and the first valve 12, and a second valve 41 for opening and closing the first branch 4 is further arranged on the first branch 4. A second branch 5 is further arranged between the first valve 12 and the raw water inlet 22, the second branch 5 is connected to one end, far away from the ultrafiltration body 21, of the third valve 13 and can be communicated with the raw water tank 1, and a seventh valve 51 is arranged on the second branch 5. Thirty minutes after the first valve 12, the third valve 13 and the fifth valve 25 are opened to allow raw water to enter from the raw water inlet 22 for filtration, the first valve 12 and the third valve 13 are closed, the seventh valve 51 and the second valve 41 are opened to allow raw water to enter the ultrafiltration body 21 from the raw water outlet 23, the flow direction of the raw water entering the ultrafiltration body 21 is reversed, impurities attached to the inner cavity of the ultrafiltration membrane are moved, the flow rate of the ultrafiltration body 21 is not easily reduced too fast, the number of times of flushing is reduced, and the service life of the ultrafiltration membrane is prolonged.

A third branch 6 is further arranged between the fifth valve 25 and the filtrate outlet 24, one end of the third branch 6, which is far away from the fifth valve 25, is communicated with the water production tank 3, a sixth valve 62 and a backwashing pump 61 for flushing the filter body are further arranged on the third branch 6, and the sixth valve 62 is arranged at one end, which is close to the filter body, of the backwashing pump 61. The water inlet of the backwash pump 61 is communicated with the generation tank, and the water outlet of the backwash pump 61 is communicated with the sixth valve 62. A fourth branch 7 is further arranged between the first valve 12 and the seventh valve 51, a fourth valve 71 for opening and closing the fourth branch 7 is arranged on the fourth branch 7, and one end of the fourth branch 7, which is far away from the ultrafiltration body 21, can discharge sewage. Thirty minutes later when raw water enters the ultrafiltration body 21 from the raw water outlet 23, the second valve 41, the fifth valve 25 and the raw water pump 11 are closed, the sixth valve 62 and the fourth valve 71 are opened, liquid filtered out of the production tank is conveyed into the ultrafiltration body 21 through the filtrate outlet 24 by the back flush pump 61, the inner cavity of the ultrafiltration membrane in the filtered liquid is cleaned, and then sewage at the cleaning position is discharged from the fourth branch 7.

Because the water pressure in the pipeline needs to be known in the process of filtering and backwashing, the pipeline is not easy to break due to overlarge water pressure in the pipeline, a second pressure gauge 26 is arranged at the filtrate outlet 24, and the input water pressure is controlled by the second pressure gauge 26 in the backwashing process. The water outlet of the raw water pump 11 is provided with a first pressure gauge 14, and in the raw water filtering process, the pressure of the raw water on the pipeline is limited by the first pressure gauge 14, so that the pipeline is not easy to break.

Because the pressure output by the raw water pump 11 needs to be monitored in the using process of the equipment, a pressure switch 15 is arranged between the first pressure gauge 14 and the ultrafiltration body 21, the pressure in the pipeline is automatically detected by utilizing the pressure switch 15, and then the pressure is transmitted to the monitoring equipment in real time.

Because the blocking condition of the ultrafiltration membrane is difficult to understand visually in the using process of the equipment, a flow valve 27 is further arranged between the fifth valve 25 and the water production tank 3, the flow rate of filtered filtrate is detected by the flow valve 27, the blocking degree of the ultrafiltration membrane is known, and the subsequent cleaning of the ultrafiltration membrane is facilitated.

Still be provided with the sample branch road 8 that is used for the sample between flow valve 27 and the product water tank 3, still be provided with sample valve 81 on the sample branch road 8 to when the filter effect of milipore filter is known to needs, accessible sample valve 81 takes out partial filtrate and detects.

Since the filtered impurities have strong adhesion and it is difficult to remove the attachments in the ultrafiltration body 21 even during backwashing with liquid, the ultrafiltration module 2 is further provided with a chemical cleaning mechanism 9, and the chemical cleaning mechanism 9 includes a medicine tank 91 and a chemical cleaning pump 92 for driving the liquid in the medicine tank 91 to flow into the ultrafiltration body 21. The water inlet of the chemical cleaning pump 92 is communicated with the medicine storage tank 91, the water outlet of the chemical cleaning pump 92 is communicated with the raw water outlet 23, and the water outlet of the chemical cleaning pump 92 is provided with a first chemical cleaning valve 93. A fifth branch 94 is arranged between the seventh valve 51 and the raw water inlet 22, the other end of the fifth branch 94 is communicated with the medicine storage tank 91, and a second chemical cleaning valve 95 is further arranged on the fifth branch 94. Therefore, all valves are closed before chemical cleaning is needed, and then the second chemical cleaning valve 95 and the first chemical cleaning valve 93 are opened, so that the ultrafiltration membrane is cleaned by using chemical liquid.

The implementation principle of the embodiment is as follows: when the filtration is started, all the valves are closed, then the first valve 12, the third valve 13 and the fifth valve 25 are opened, then the raw water pump 11 drives the raw water to enter the ultrafiltration membrane, the filtered liquid enters the water production tank 3, and the unfiltered liquid enters the raw water tank 1 from the raw water outlet 23. After thirty minutes of operation, the first valve 12 and the third valve 13 are closed, the second valve 41 and the seventh valve 51 are opened, and raw water is introduced into the filter body from the raw water outlet 23, and unfiltered raw water is introduced into the raw water tank 1 from the raw water inlet 22. After thirty minutes of operation, the raw water pump 11, the second valve 41 and the seventh valve 51 are closed, the fourth valve 71 and the sixth valve 62 are opened, the backwash pump 61 is opened to drive the liquid in the product water tank 3 to enter the filtrate outlet 24, then the sewage flushed from the ultrafiltration body 21 is discharged from the raw water inlet 22 for sewage disposal, and then the raw water is continuously introduced from the raw water inlet 22 for filtration.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a pressure formula milipore filter device in full-automatic integration for high contaminated wastewater handles which characterized in that: the raw water treatment device comprises a raw water tank (1), a raw water pump (11) for driving raw water in the raw water tank (1) to flow, an ultrafiltration assembly for filtering and a water production tank (3) for storing filtrate, wherein the ultrafiltration assembly (2) comprises an ultrafiltration body (21), a raw water inlet (22) arranged at one end of the ultrafiltration body (21), a raw water outlet (23) arranged at the other end of the ultrafiltration body (21) and a plurality of filtrate outlets (24) arranged at one side of the ultrafiltration body (21), a water outlet of the raw water pump (11) is connected with the raw water inlet (22), a first valve (12) is arranged between the raw water pump (11) and the raw water inlet (22), the raw water outlet (23) is connected with the raw water tank (1), a third valve (13) is arranged between the raw water outlet (23) and the raw water tank (1), and the filtrate outlets (24) are all connected with the water production tank (3);

a first branch (4) is arranged between the third valve (13) and the raw water outlet (23), the other end of the first branch (4) is connected between the raw water pump (11) and the first valve (12), and a second valve (41) is arranged on the first branch (4);

a second branch (5) is arranged between the first valve (12) and the raw water inlet (22), the other end of the second branch (5) is connected to one end, far away from the ultrafiltration module, of the third valve (13), and a seventh valve (51) is arranged on the second branch (5).

2. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 1, wherein: a fifth valve (25) is further arranged between the filtrate outlet (24) and the water production tank (3), a third branch (6) is further arranged between the fifth valve (25) and the filtrate outlet (24), one end, far away from the fifth valve (25), of the third branch (6) is communicated with the water production tank (3), a sixth valve (62) and a back-washing pump (61) for driving liquid to flow are arranged on the third branch (6), and the sixth valve (62) is arranged at one end, close to the fifth valve (25), of the back-washing pump (61);

a fourth branch (7) is further arranged between the first valve (12) and the seventh valve (51), a fourth valve (71) is arranged on the fourth branch (7), and sewage can be discharged from one end, far away from the ultrafiltration module (2), of the fourth branch (7).

3. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 2, wherein: and a second pressure gauge (26) is arranged at the filtrate outlet (24).

4. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 1, wherein: and a first pressure gauge (14) is arranged at the water outlet of the raw water pump (11).

5. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 1, wherein: and a pressure switch (15) is also arranged at the water outlet of the raw water pump (11).

6. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 2, wherein: and a flow valve (27) is arranged at one end of the fifth valve (25) close to the water production tank (3).

7. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 2, wherein: a sampling branch (8) is arranged between the fifth valve (25) and the water production tank (3), and a sampling valve (81) is arranged on the sampling branch (8).

8. The full-automatic integrated internal pressure type ultrafiltration membrane device for high pollution wastewater treatment according to claim 1, wherein: still be provided with chemical cleaning mechanism (9) on the ultrafiltration subassembly, chemical cleaning mechanism (9) are including explosive box (91) and be used for driving chemical cleaning pump (92) that liquid flows, the delivery port and the raw water export (23) of chemical cleaning pump (92) intercommunication, be provided with fifth branch road (94) between seventh valve (51) and raw water import (22), the fifth branch road (94) other end and explosive box (91) intercommunication, be provided with second chemical cleaning valve (95) on fifth branch road (94).