CN220766622U - Reverse osmosis membrane sewage treatment plant - Google Patents
Reverse osmosis membrane sewage treatment plant Download PDFInfo
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- CN220766622U CN220766622U CN202322321837.3U CN202322321837U CN220766622U CN 220766622 U CN220766622 U CN 220766622U CN 202322321837 U CN202322321837 U CN 202322321837U CN 220766622 U CN220766622 U CN 220766622U
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- reverse osmosis
- osmosis membrane
- pipeline
- sewage treatment
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Abstract
The utility model belongs to the technical field of sewage treatment, and in particular relates to a reverse osmosis membrane sewage treatment device which comprises a waste water pipeline, a pressure pump and a reverse osmosis membrane filter which are sequentially connected, wherein the reverse osmosis membrane filter is connected with a concentrated solution pipeline and a filtrate pipeline, a first pressure sensor and a second pressure sensor are respectively arranged at the front and rear of the reverse osmosis membrane filter, and the filtrate pipeline is connected with a water storage tank; a flushing pipeline is arranged between the water storage tank and the reverse osmosis membrane filter, the flushing pipeline is connected to the water outlet side of the reverse osmosis membrane filter from the water storage tank, and a liquid supply pump and a control valve are arranged on the flushing pipeline; the control system is used for receiving signals of the first pressure sensor and the second pressure sensor to control the liquid supply pump and the opening and closing of the valve. The reverse osmosis membrane sewage treatment device has long effective service life of the reverse osmosis membrane and can realize continuous production operation.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a reverse osmosis membrane sewage treatment device.
Background
A reverse osmosis membrane sewage treatment apparatus is an apparatus for sewage treatment, which has been widely used in the field of sewage treatment. Reverse osmosis membrane is a membrane which separates solvent from solution by pressure difference as driving force, and in operation, applies pressure to feed liquid on one side of the membrane, when the pressure exceeds the osmotic pressure, the solvent can reverse osmosis against the natural osmosis direction, so that permeated solvent, i.e. permeate, is obtained on the low pressure side of the membrane, and concentrated solution, i.e. concentrate, is obtained on the high pressure side.
The reverse osmosis sewage treatment device needs to replace or clean the reverse osmosis membrane after being used for a period of time so as to ensure the filtration performance of the reverse osmosis membrane. Therefore, how to ensure the effective service life of the reverse osmosis membrane is a technical problem which is necessary to be solved in the industry.
Disclosure of Invention
The utility model aims to solve the problems and provide a reverse osmosis membrane sewage treatment device.
In order to achieve the above purpose, the utility model provides a reverse osmosis membrane sewage treatment device, which comprises a waste water pipeline, a pressure pump and a reverse osmosis membrane filter which are sequentially connected, wherein the reverse osmosis membrane filter is connected with a concentrated solution pipeline and a filtrate pipeline, a first pressure sensor and a second pressure sensor are respectively arranged in front of and behind the reverse osmosis membrane filter, and the filtrate pipeline is connected with a water storage tank;
a flushing pipeline is arranged between the water storage tank and the reverse osmosis membrane filter, the flushing pipeline is connected to the water outlet side of the reverse osmosis membrane filter from the water storage tank, and a liquid supply pump and a control valve are arranged on the flushing pipeline;
the control system is used for receiving signals of the first pressure sensor and the second pressure sensor to control the opening and closing of the liquid supply pump and the control valve.
According to one aspect of the utility model, the control system controls the liquid supply pump and the control valve to be opened when the pressure difference between the first pressure sensor and the second pressure sensor is larger than a set threshold value.
According to one aspect of the utility model, the flushing pipeline is connected to a recovery tank through a flushing water outlet pipe, and a recovery pipeline is connected between the recovery tank and the reverse osmosis filter;
and a recovery control valve is arranged on the recovery pipeline.
According to one aspect of the utility model, a filtering membrane layer is arranged in the recovery tank.
According to one aspect of the utility model, a liquid level sensor is further arranged on the recovery tank, and the control system receives signals of the liquid level sensor to control the recovery control valve to be opened and closed.
According to one aspect of the utility model, a second flushing pipeline is further arranged between the water storage tank and the reverse osmosis membrane filter, the second flushing pipeline is connected with the water inlet side of the reverse osmosis membrane filter from the water storage tank, and a second liquid supply pump and a second control valve are arranged on the second flushing pipeline;
the second flushing pipeline is connected to the recovery tank through a second flushing water outlet pipe.
According to one aspect of the utility model, the waste water pipeline is provided with a first flow rate detector, and the filtrate pipeline is provided with a second flow rate detector.
According to one aspect of the utility model, the control system controls the second liquid supply pump and the second control valve to be opened when the flow ratio of the first flow detector to the second flow detector is larger than a second set threshold.
According to one aspect of the utility model, a liquid inlet control valve is arranged on the waste water pipeline;
when the recovery control valve is opened, the liquid inlet control valve is closed.
According to one aspect of the utility model, the concentrate line is connected to a processing tank.
According to the reverse osmosis membrane sewage treatment device, when the pressure difference value between the first pressure sensor and the second pressure sensor is larger than the set threshold value, the filtering capacity of the reverse osmosis membrane filter is reduced, the reverse osmosis membrane filter is required to be cleaned, at the moment, the control system controls the liquid supply pump and the control valve to be opened, filtrate in the water storage tank is flushed through the flushing pipeline, and the filtering performance of the reverse osmosis membrane is ensured.
By the above arrangement, the reverse osmosis membrane sewage treatment apparatus of the present utility model can filter the filtrate washed by the reverse osmosis membrane and then treat the filtrate by the reverse osmosis membrane filter through the recovery line. Particularly, when the liquid level sensor detects that the liquid level in the recovery tank reaches the set liquid level, the liquid inlet control valve is controlled to be closed and the recovery control valve is controlled to be opened, so that recovery treatment of the liquid in the recovery tank is facilitated. Meanwhile, the filtering membrane in the recovery box can be cleaned or replaced regularly during the closing period of the recovery control valve, so that the continuous operation without stopping the reverse osmosis membrane sewage treatment device is facilitated.
Drawings
Fig. 1 is a schematic structural view showing a reverse osmosis membrane sewage treatment apparatus according to an embodiment of the present utility model.
The reference numerals in the drawings represent the following meanings:
1. a waste water pipeline; 2. a pressure pump; 3. a reverse osmosis membrane filter; 4. a concentrate line; 5. a filtrate line; 31. a first pressure sensor; 32. a second pressure sensor; 6. a water storage tank; 61. flushing the pipeline; 62. a liquid supply pump; 63. a control valve; 64. flushing a water outlet pipe; 7. a recovery box; 71. a recovery pipeline; 72. a recovery control valve; 73. a filtration membrane layer; 74. a liquid level sensor; 65. a second flushing line; 66. a second liquid supply pump; 67. a second control valve; 68. a second flushing outlet pipe; 11. a first flow rate detector; 51. a second flow rate detector; 12. a liquid inlet control valve; 41. a treatment box.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
The present utility model will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present utility model are not limited to the following embodiments.
As shown in fig. 1, the utility model provides a reverse osmosis membrane sewage treatment device, which comprises a waste water pipeline 1, a pressure pump 2 and a reverse osmosis membrane filter 3 which are sequentially connected, wherein the reverse osmosis membrane filter 3 is connected with a concentrated solution pipeline 4 and a filtrate pipeline 5, the concentrated solution pipeline 4 is connected to a treatment tank 41, and the filtrate pipeline 5 is connected with a water storage tank 6.
In the present utility model, a flushing line 61 is provided between the water storage tank 6 and the reverse osmosis membrane filter 3, the flushing line 61 is connected from the water storage tank 6 to the water outlet side of the reverse osmosis membrane filter 3, and a liquid supply pump 62 and a control valve 63 are provided on the flushing line 61. The reverse osmosis membrane filter 3 is provided with a first pressure sensor 31 and a second pressure sensor 32, respectively, in front and back. The reverse osmosis membrane filter of the utility model also comprises a control system, wherein the control system is used for receiving signals of the first pressure sensor 31 and the second pressure sensor 32 to control the opening and closing of the liquid supply pump 62 and the control valve 63. Specifically, the control system receives the pressure values of the first pressure sensor 31 and the second pressure sensor 32, when the pressure difference between the first pressure sensor 31 and the second pressure sensor 32 is greater than a set threshold (in practical application, the set threshold is different for different waste water), which indicates that the filtration capacity of the reverse osmosis membrane filter is reduced, and cleaning of the reverse osmosis membrane is required, at this time, the control system controls the liquid supply pump 62 and the control valve 63 to be opened, so that the filtrate in the water storage tank 6 washes the reverse osmosis membrane through the flushing pipeline 61, and the filtration performance of the reverse osmosis membrane is ensured.
As shown in fig. 1, according to an embodiment of the present utility model, a second flushing pipeline 65 is further disposed between the water storage tank 6 and the reverse osmosis membrane filter 3, the second flushing pipeline 65 is connected to the water inlet side of the reverse osmosis membrane filter 3 from the water storage tank 6, and a second liquid supply pump 66 and a second control valve 67 are disposed on the second flushing pipeline 65. The waste water line 1 is provided with a first flow rate detector 11, and the filtrate line 5 is provided with a second flow rate detector 51. When the flow ratio of the first flow rate detector 11 to the second flow rate detector 51 is greater than the second set threshold, the filtering performance of the reverse osmosis filtering membrane in the specification is abnormal, and the control system controls the second liquid supply pump 65 and the second control valve 66 to be opened, so that the cleaning operation is performed on the reverse osmosis filtering membrane through the second flushing pipeline 65.
As shown in fig. 1, according to one embodiment of the present utility model, the flushing line 61 is connected to the recovery tank 7 through a flushing outlet pipe 64, and the second flushing line 65 is connected to the recovery tank 7 through a second flushing outlet pipe 68. A recovery pipeline 71 is connected between the recovery tank 7 and the reverse osmosis filter 3, and a recovery control valve 72 is arranged on the recovery pipeline 71.
In the reverse osmosis membrane sewage treatment apparatus of the present utility model, the recovery tank 7 is provided, and the liquid for washing the reverse osmosis membrane is collected in the recovery tank 7 and then filtered through the recovery line 71.
As shown in fig. 1, according to an embodiment of the present utility model, a filtration membrane layer 73 is provided in the recovery tank 7. The recovery tank 7 is also provided with a liquid level sensor 74, and the control system receives signals of the liquid level sensor 74 to control the recovery control valve 72 to be opened and closed. A liquid inlet control valve 12 is arranged on the waste water pipeline 1; when the recovery control valve 72 is opened, the feed control valve 12 is closed.
With the above arrangement, the reverse osmosis membrane sewage treatment apparatus of the present utility model can filter the filtrate washed with the reverse osmosis membrane and then pass the filtrate through the reverse osmosis membrane filter 3 via the recovery line 71. In particular, the liquid inlet control valve 12 is controlled to be closed and the recovery control valve is controlled to be opened when the liquid level sensor 74 detects that the liquid level in the recovery tank 7 reaches the set liquid level, thereby facilitating recovery treatment of the liquid in the recovery tank 7. Meanwhile, the filtering membrane in the recovery tank 7 can be cleaned or replaced periodically during the closing period of the recovery control valve 72, so that the continuous operation without stopping the reverse osmosis membrane sewage treatment device is facilitated.
The above description is only one embodiment of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The reverse osmosis membrane sewage treatment device comprises a waste water pipeline (1), a pressure pump (2) and a reverse osmosis membrane filter (3) which are sequentially connected, wherein the reverse osmosis membrane filter (3) is connected with a concentrated solution pipeline (4) and a filtrate pipeline (5), and the reverse osmosis membrane sewage treatment device is characterized in that a first pressure sensor (31) and a second pressure sensor (32) are respectively arranged in front of and behind the reverse osmosis membrane filter (3), and the filtrate pipeline (5) is connected with a water storage tank (6);
a flushing pipeline (61) is arranged between the water storage tank (6) and the reverse osmosis membrane filter (3), the flushing pipeline (61) is connected to the water outlet side of the reverse osmosis membrane filter (3) from the water storage tank (6), and a liquid supply pump (62) and a control valve (63) are arranged on the flushing pipeline (61);
the control system is used for receiving signals of the first pressure sensor (31) and the second pressure sensor (32) to control the opening and closing of the liquid supply pump (62) and the control valve (63).
2. The reverse osmosis membrane sewage treatment apparatus according to claim 1, wherein the control system controls the liquid supply pump (62) and the control valve (63) to be opened when a pressure difference between the first pressure sensor (31) and the second pressure sensor (32) is greater than a set threshold value.
3. The reverse osmosis membrane sewage treatment device according to claim 2, wherein the flushing pipeline (61) is connected to a recovery tank (7) through a flushing water outlet pipe (64), and a recovery pipeline (71) is connected between the recovery tank (7) and the reverse osmosis membrane filter (3);
the recovery pipeline (71) is provided with a recovery control valve (72).
4. A reverse osmosis membrane sewage treatment device according to claim 3, characterized in that a filtration membrane layer (73) is provided in the recovery tank (7).
5. The reverse osmosis membrane sewage treatment device according to claim 4, wherein a liquid level sensor (74) is further arranged on the recovery tank (7), and the control system receives a signal of the liquid level sensor (74) to control the recovery control valve (72) to be opened and closed.
6. The reverse osmosis membrane sewage treatment device according to claim 5, wherein a second flushing pipeline (65) is further arranged between the water storage tank (6) and the reverse osmosis membrane filter (3), the second flushing pipeline (65) is connected with the water inlet side of the reverse osmosis membrane filter (3) from the water storage tank (6), and a second liquid supply pump (66) and a second control valve (67) are arranged on the second flushing pipeline (65);
the second flushing line (65) is connected to the recovery tank (7) via a second flushing outlet pipe (68).
7. The reverse osmosis membrane sewage treatment device according to claim 6, wherein a first flow rate detector (11) is provided on the waste water pipeline (1), and a second flow rate detector (51) is provided on the filtrate pipeline (5).
8. The reverse osmosis membrane sewage treatment apparatus according to claim 7, wherein the control system controls the second liquid supply pump (66) and the second control valve (67) to be opened when the flow ratio of the first flow rate detector (11) to the second flow rate detector (51) is greater than a second set threshold value.
9. The reverse osmosis membrane sewage treatment device according to claim 8, wherein a liquid inlet control valve (12) is arranged on the waste water pipeline (1);
when the recovery control valve (72) is opened, the liquid inlet control valve (12) is closed.
10. The reverse osmosis membrane sewage treatment device according to claim 1, characterized in that the concentrate line (4) is connected to a treatment tank (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321837.3U CN220766622U (en) | 2023-08-29 | 2023-08-29 | Reverse osmosis membrane sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322321837.3U CN220766622U (en) | 2023-08-29 | 2023-08-29 | Reverse osmosis membrane sewage treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220766622U true CN220766622U (en) | 2024-04-12 |
Family
ID=90619612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322321837.3U Active CN220766622U (en) | 2023-08-29 | 2023-08-29 | Reverse osmosis membrane sewage treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220766622U (en) |
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2023
- 2023-08-29 CN CN202322321837.3U patent/CN220766622U/en active Active
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