MBR curtain type membrane water treatment system

Abstract

The utility model discloses an MBR (Membrane Biological Reactor) curtain type membrane water treatment system which comprises a membrane frame box and a dosing mechanism, the membrane frame box comprises a box body connected with a water inlet pipe, an exhaust pipe and a sludge discharge pipe; the membrane filament group frame is fixedly arranged in the box body; the aeration pipe is fixedly arranged in the box body and is positioned below the membrane filament group frame; the chemical adding mechanism comprises a chemical storage box which is connected to the exhaust pipe through a chemical adding pipe; and the diaphragm pump is arranged on the dosing pipe. According to the water treatment system disclosed by the utility model, the whole membrane wire group frame does not need to be lifted out when the MBR membrane wires are cleaned by off-line dosing, and restorative chemical cleaning is directly carried out in the box body, so that manpower and material resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an MBR curtain membrane water treatment system. Background Art

[0002] With the continuous improvement of membrane separation technology, MBR curtain membranes have been more and more widely used, and their sewage treatment capacity is also increasing. At present, in most sewage treatment projects, MBR curtain membranes mostly adopt an immersion scheme, that is, a complete set of MBR membrane frames are completely placed in the sewage, and the negative pressure generated by the suction pump is used to intercept the sludge outside the membrane fibers, and the filtered clean water is sucked into the clean water tank through the hollow pipes inside the membrane fibers; after running for a period of time, the backwash pump is used to pump clean water into the membrane fibers to clean the various sludge particles stuck in the membrane pores of the membrane fibers; during the operation, the membrane fiber assembly is always in an aerated state.

[0003] In actual operation, after long-term use of the membrane components, a firm and irreversible pollution layer will be produced. Water backwashing and online maintenance cleaning can no longer have a significant effect. The membrane fibers are seriously blocked and the membrane flux drops sharply. At this time, the MBR membrane fibers need to be cleaned by offline immersion with chemicals to restore the flux of the MBR membrane fibers. This requires that the MBR membrane frame immersed in the water pool be completely lifted out and immersed in a water tank with chemicals for cleaning. This process is very time-consuming and labor-intensive. Therefore, a water treatment system is designed, which is easy and quick to install. It can make it possible to directly perform restorative chemical cleaning in the MBR membrane frame box without lifting out the entire MBR membrane frame when cleaning the MBR membrane fibers offline by adding chemicals, thereby saving manpower and material resources. Utility Model Content

[0004] In view of the above defects or deficiencies in the prior art, it is desired to provide an MBR curtain membrane water treatment system, which does not require the entire membrane fiber assembly to be hoisted out when the MBR membrane fibers are cleaned offline, and restorative chemical cleaning can be performed directly in the box, saving manpower and material resources.

[0005] The utility model provides an MBR curtain membrane water treatment system, including a membrane frame box and a dosing mechanism;

[0006] The film frame box comprises:

[0007] The box body has a water inlet pipe connected to one side, an exhaust pipe connected to the top, and a mud discharge pipe connected to the bottom; the water inlet pipe is provided with a water inlet valve, the exhaust pipe is provided with an exhaust valve, and the mud discharge pipe is provided with a mud discharge valve;

[0008] A membrane fiber assembly frame is fixedly disposed in the box body, one side of which is connected to a water outlet pipe extending out of the box body, and a water outlet valve is disposed on the water outlet pipe; and

[0009] an aeration pipe, fixedly disposed in the box body and located below the membrane fiber assembly frame, one end of which extends out of the box body and is connected to an aeration source, and an aeration valve is disposed at the input end of the aeration pipe;

[0010] The dosing mechanism comprises:

[0011] A medicine storage box connected to the exhaust pipe between the box body and the exhaust valve through a medicine adding pipe, and the medicine adding pipe is provided with a medicine adding valve; and

[0012] The diaphragm pump is arranged on the medicine adding pipe and is located between the medicine storage box and the medicine adding valve.

[0013] Furthermore, the membrane rack boxes are provided with two groups.

[0014] Furthermore, the dosing mechanism also includes a circulation pump, the input end of the circulation pump is connected to the mud discharge pipe between the box body and the mud discharge valve through a circulation pipe, a circulation valve is provided on the circulation pipe, and the output end of the circulation pump is connected to the dosing pipe between the diaphragm pump and the dosing valve.

[0015] Furthermore, one end of the water inlet pipe away from the box is connected to the regulating tank through a water inlet pump.

[0016] Furthermore, one end of the exhaust pipe away from the box body extends to above the regulating tank.

[0017] Furthermore, one end of the water outlet pipe away from the membrane fiber assembly frame is respectively connected to the clean water tank and the backwash water tank, a clean water tank valve is provided at one end of the water outlet pipe close to the clean water tank, and a backwash water tank valve is provided at one end of the water outlet pipe close to the backwash water tank.

[0018] Furthermore, the backwash water tank is connected to a backwash pipe, a backwash valve is provided on the backwash pipe, one end of the backwash pipe away from the backwash water tank is connected to the outlet pipe between the membrane fiber assembly frame and the outlet valve, and a backwash pump is provided on the backwash pipe.

[0019] Furthermore, one end of the mud discharge pipe away from the box body is connected to a mud storage tank.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The water treatment system of the utility model encapsulates the membrane fiber assembly frame into a box body, and connects it to the system through pipelines. Wastewater treatment is carried out in the box body, and the box body can be directly fixed on the cement floor, and the equipment is easy and quick to install; when chemical cleaning is carried out, the box body is cut off from the sewage treatment process by switching the valve, and connected to the chemical cleaning process; by using forward dosing and reverse cleaning, as the chemical cleaning gradually proceeds, the membrane fiber flux continues to increase, which can enhance the cleaning effect and shorten the cleaning time; the cleaning process can be controlled by an automated program, and the operation and maintenance personnel can adjust the valve opening on time; this cleaning method can reduce the amount of dosing, and the membrane fiber flux can be restored, thereby saving the cost of the agent. The water treatment system of the present application does not need to lift out the entire membrane fiber assembly frame when doing offline dosing to clean the MBR membrane fibers, and can directly perform restorative chemical cleaning in the box body, saving manpower and material resources.

[0022] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 It is a structural schematic diagram of the MBR curtain membrane water treatment system;

[0025] Figure 2 It is a structural schematic diagram of the membrane rack box.

[0026] Numbers in the figure: 1, membrane frame box; 2, dosing mechanism; 3, regulating tank; 4, clean water tank; 5, backwash water tank; 6, mud storage tank;

[0027] 101, box body; 102, membrane wire assembly frame; 103, aeration pipe; 104, water inlet pipe; 105, exhaust pipe; 106, mud discharge pipe; 107, water inlet valve, 108, exhaust valve; 109, mud discharge valve; 110, water outlet pipe; 111, water outlet valve; 112, aeration source; 113, aeration valve;

[0028] 201, medicine storage box; 202, diaphragm pump; 203, medicine adding pipe; 204, medicine adding valve; 205, circulation pump; 206, circulation pipe; 207, circulation valve;

[0029] 301, water inlet pump;

[0030] 401, clear water tank valve;

[0031] 501, backwash tank valve; 502, backwash pipe; 503, backwash valve; 504, backwash pump. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] Please refer to Figure 1-2 , the embodiment of the utility model provides an MBR curtain membrane water treatment system, including a membrane frame box 1 and a dosing mechanism 2;

[0035] The film frame box 1 comprises:

[0036] The box body 101 has a water inlet pipe 104 connected to one side, an exhaust pipe 105 connected to the top, and a mud discharge pipe 106 connected to the bottom; a water inlet valve 107 is provided on the water inlet pipe 104, an exhaust valve 108 is provided on the exhaust pipe 105, and a mud discharge valve 109 is provided on the mud discharge pipe 106;

[0037] The membrane fiber assembly frame 102 is fixedly disposed in the box body 101, and one side of the membrane fiber assembly frame 102 is connected to a water outlet pipe 110 extending out of the box body 101, and a water outlet valve 111 is disposed on the water outlet pipe 110; and

[0038] The aeration pipe 103 is fixedly arranged in the box 101 and is located below the membrane fiber assembly frame 102. One end of the aeration pipe 103 extends out of the box 101 and is connected to the aeration source 112. The input end of the aeration pipe 103 is provided with an aeration valve 113.

[0039] Dosing mechanism 2 includes:

[0040] The medicine storage box 201 is connected to the exhaust pipe 105 between the box body 101 and the exhaust valve 108 through the medicine adding pipe 203, and the medicine adding pipe 203 is provided with a medicine adding valve 204; and

[0041] The diaphragm pump 202 is disposed on the drug adding pipe 203 and is located between the drug storage box 201 and the drug adding valve 204 .

[0042] In this embodiment, when the water treatment system is in operation, raw water enters the housing 101 through the water inlet pipe 104, and aeration is injected into the housing 101 through the air compressor. The raw water is filtered by the MBR membranes on the membrane assembly frame 102 and then discharged from the water outlet pipe 110.

[0043] In general, conventional backwashing is used for MBR membranes. When conventional backwashing cannot meet the demand, the water inlet valve 107, the exhaust valve 108, the mud discharge valve 109, the water outlet valve 111 and the aeration valve 113 are first closed to remove the box 101 from the sewage treatment process; then the dosing valve 204 and the diaphragm pump 202 are opened to connect the box 101 to the chemical cleaning process; the chemical agent in the drug storage box 201 is injected into the box 101 through the dosing pipe 203 and the exhaust pipe 105 for chemical cleaning. As the chemical cleaning gradually proceeds, the flux of the membrane fibers continues to increase, which can enhance the cleaning effect and shorten the cleaning time; the cleaning process can be controlled by an automated program, and the operation and maintenance personnel can adjust the valve opening on time; this cleaning method can reduce the amount of dosing, and the membrane fiber flux can be restored, thereby saving the cost of the agent. Chemical cleaning is carried out directly in the box 101, without the need to lift out the entire membrane fiber assembly frame 102, saving manpower and material resources.

[0044] In a preferred embodiment, if Figure 1 As shown, two groups of membrane frame boxes 1 are provided.

[0045] In this embodiment, two groups of membrane rack boxes 1 are configured in each water treatment system, one group of membrane rack boxes 1 performs water treatment, and the other group performs conventional backwashing; the two groups of membrane rack boxes 1 are replaced and operated at intervals to ensure the continuity of water treatment.

[0046] In a preferred embodiment, if Figure 1 As shown, the dosing mechanism 2 also includes a circulation pump 205, the input end of the circulation pump 205 is connected to the mud discharge pipe 106 between the box body 101 and the mud discharge valve 109 through a circulation pipe 206, a circulation valve 207 is provided on the circulation pipe 206, and the output end of the circulation pump 205 is connected to the dosing pipe 203 between the diaphragm pump 202 and the dosing valve 204.

[0047] In this embodiment, after the chemical agent is injected into the box body 101, the circulation valve 207 and the circulation pump 205 are opened, and the water and chemical agents in the box body 101 are output through the mud discharge pipe 106 and the circulation pipe 206, and then injected into the box body 101 through the dosing pipe 203 and the exhaust pipe 105, forming a circulation cleaning, which greatly improves the cleaning effect of the chemical cleaning.

[0048] In a preferred embodiment, if Figure 1 As shown, one end of the water inlet pipe 104 away from the tank 101 is connected to the regulating tank 3 through the water inlet pump 301. Raw water is injected into the regulating tank 3 for storage, and then injected into the tank 101 through the water inlet pump 301 for filtering treatment.

[0049] In a preferred embodiment, if Figure 1As shown, one end of the exhaust pipe 105 away from the housing 101 extends to the top of the regulating tank 3. The aeration carries water together and is discharged through the exhaust pipe 105, and the water therein enters the regulating tank 3 for collection and waiting for filtering treatment.

[0050] In a preferred embodiment, if Figure 1 As shown, one end of the water outlet pipe 110 away from the membrane fiber assembly frame 102 is respectively connected to the clean water tank 4 and the backwash water tank 5, a clean water tank valve 401 is provided at the end of the water outlet pipe 110 close to the clean water tank 4, and a backwash water tank valve 501 is provided at the end of the water outlet pipe 110 close to the backwash water tank 5.

[0051] In this embodiment, the raw water is filtered by the membrane fiber assembly 102 and then outputted from the outlet pipe 110 , most of which enters the clean water tank 4 for storage, and a small portion enters the backwash water tank 5 for backwashing of the membrane fiber assembly 102 .

[0052] In a preferred embodiment, if Figure 1 As shown, the backwash water tank 5 is connected to a backwash pipe 502 , a backwash valve 503 is provided on the backwash pipe 502 , one end of the backwash pipe 502 away from the backwash water tank 5 is connected to the outlet pipe 110 between the membrane fiber assembly frame 102 and the outlet valve 111 , and a backwash pump 504 is provided on the backwash pipe 502 .

[0053] In this embodiment, when backwashing is performed, the water inlet valve 107 and the water outlet valve 111 are closed, and the backwash valve 503, the backwash pump 504 and the mud discharge valve 109 are opened. The water in the backwash water tank 5 enters the membrane fiber assembly frame 102 through the backwash pipe 502 and the water outlet pipe 110, and the dirt accumulated on the outer surface of the membrane fiber is backwashed, and the backwash wastewater is discharged through the mud discharge pipe 106.

[0054] In a preferred embodiment, if Figure 1 As shown, one end of the mud discharge pipe 106 away from the box 101 is connected to the mud storage tank 6. The sewage from backwashing and the sewage from chemical cleaning are discharged into the mud storage tank 6 through the mud discharge pipe 106 for collection.

[0055] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An MBR curtain membrane water treatment system, characterized in that: It comprises a film frame box (1) and a drug adding mechanism (2); The film frame box (1) comprises: The box body (101) is connected to a water inlet pipe (104) on one side, an exhaust pipe (105) on the top, and a mud discharge pipe (106) on the bottom; the water inlet pipe (104) is provided with a water inlet valve (107), the exhaust pipe (105) is provided with an exhaust valve (108), and the mud discharge pipe (106) is provided with a mud discharge valve (109); A membrane fiber assembly frame (102) is fixedly arranged in the box body (101), one side of which is connected to a water outlet pipe (110) extending out of the box body (101), and a water outlet valve (111) is arranged on the water outlet pipe (110); and an aeration pipe (103), fixedly arranged in the box (101), located below the membrane fiber assembly frame (102), one end of which extends out of the box (101) and is connected to an aeration source (112), and an aeration valve (113) is arranged at the input end of the aeration pipe (103); The drug adding mechanism (2) comprises: A medicine storage box (201) is connected to an exhaust pipe (105) between the box body (101) and the exhaust valve (108) via a medicine adding pipe (203), and a medicine adding valve (204) is provided on the medicine adding pipe (203); and The diaphragm pump (202) is arranged on the drug adding pipe (203) and is located between the drug storage box (201) and the drug adding valve (204).

2. The MBR curtain membrane water treatment system according to claim 1, characterized in that: The membrane frame boxes (1) are provided in two groups.

3. The MBR curtain membrane water treatment system according to any one of claims 1 or 2, characterized in that: The dosing mechanism (2) further comprises a circulation pump (205), the input end of the circulation pump (205) being connected to the mud discharge pipe (106) between the box body (101) and the mud discharge valve (109) via a circulation pipe (206), a circulation valve (207) being provided on the circulation pipe (206), and the output end of the circulation pump (205) being connected to the dosing pipe (203) between the diaphragm pump (202) and the dosing valve (204).

4. The MBR curtain membrane water treatment system according to any one of claims 1 or 2, characterized in that: One end of the water inlet pipe (104) away from the box (101) is connected to the regulating tank (3) through a water inlet pump (301).

5. The MBR curtain membrane water treatment system according to claim 4, characterized in that: One end of the exhaust pipe (105) away from the box body (101) extends to the top of the regulating tank (3).

6. The MBR curtain membrane water treatment system according to any one of claims 1 or 2, characterized in that: One end of the water outlet pipe (110) away from the membrane fiber assembly frame (102) is respectively connected to the clean water tank (4) and the backwash water tank (5); one end of the water outlet pipe (110) close to the clean water tank (4) is provided with a clean water tank valve (401); and one end of the water outlet pipe (110) close to the backwash water tank (5) is provided with a backwash water tank valve (501).

7. The MBR curtain membrane water treatment system according to claim 6, characterized in that: The backwash water tank (5) is connected to a backwash pipe (502), a backwash valve (503) is provided on the backwash pipe (502), one end of the backwash pipe (502) away from the backwash water tank (5) is connected to the outlet pipe (110) between the membrane fiber assembly frame (102) and the outlet valve (111), and a backwash pump (504) is provided on the backwash pipe (502).

8. The MBR curtain membrane water treatment system according to any one of claims 1 or 2, characterized in that: One end of the mud discharge pipe (106) away from the box (101) is connected to the mud storage tank (6).

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