Ceramic flat sheet membrane filtration system

Abstract

The utility model relates to a ceramic flat sheet membrane filtration system which comprises a pretreatment system, a ceramic membrane group system, a water production system, a water backwashing system, a gas washing system, a spraying system, a chemical cleaning system, an emptying backwashing system and an automatic control system, the front end of the ceramic membrane group system is connected with the pretreatment system, the rear end of the ceramic membrane group system is connected with the water production system, and the ceramic membrane group system is equipped and connected with a water backwashing system, a gas washing system, a spraying system, a chemical cleaning system and an emptying backwashing system; the pretreatment system, the ceramic membrane group system, the water production system, the water backwashing system, the gas washing system, the spraying system, the chemical cleaning system and the emptying backwashing system are all connected with the automatic control system. According to the utility model, the high-flux ceramic flat sheet membrane is adopted as a core and is matched with the water inlet system, the water production system, the water backwashing system, the gas washing system, the spraying system, the chemical cleaning system, the emptying backwashing system and the automatic control system, so that the efficient and stable operation of water treatment can be realized.

Description

Technical Field

[0001] This utility model relates to the technical field of water treatment, and in particular to a ceramic flat sheet membrane filtration system. Background Technology

[0002] Currently, in the water treatment field, the vast majority of ultrafiltration membranes used are organic ultrafiltration membranes. However, organic ultrafiltration membranes are subject to many limitations, such as temperature, pH, influent water quality, and operating pressure, all of which affect the membrane itself and its flux. Furthermore, the water flux of organic ultrafiltration membranes is not very high during water treatment applications. Therefore, other methods are needed to address the issues of organic ultrafiltration membranes being highly susceptible to external influences and having low flux. Utility Model Content

[0003] The present invention aims to address the shortcomings of the prior art by providing a ceramic flat sheet membrane filtration system.

[0004] To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A ceramic flat sheet membrane filtration system includes a pretreatment system, a ceramic membrane module system, a product water system, a water backwashing system, an air washing system, a spray system, a chemical cleaning system, an air discharge backwashing system, and an automatic control system.

[0006] The ceramic membrane module system is connected to the pretreatment system at the front end and to the product water system at the back end. The ceramic membrane module system is equipped with a water backwashing system, an air washing system, a spray system, a chemical cleaning system, and an empty backwashing system. The pretreatment system, ceramic membrane module system, product water system, water backwashing system, air washing system, spray system, chemical cleaning system, and empty backwashing system are all connected to the automatic control system.

[0007] The pretreatment system includes a coagulant dosing system, an oxidant dosing system, and a coagulation and sedimentation system;

[0008] The coagulant dosing system includes a coagulant dosing tank and a coagulant dosing pipeline. The coagulant dosing pipeline is equipped with a manual valve, a coagulant dosing pump, a solenoid valve and a check valve in sequence.

[0009] The oxidant dosing system includes an oxidant dosing tank and an oxidant dosing pipeline. The oxidant dosing pipeline is equipped with a manual valve, an oxidant dosing pump, a solenoid valve, and a check valve in sequence.

[0010] The coagulation and sedimentation system includes a coagulation tank and a sedimentation tank connected in sequence;

[0011] The coagulant dosing tank is connected to the coagulation tank via a coagulant dosing pipeline, and the oxidant dosing tank is also connected to the coagulation tank via an oxidant dosing pipeline. A water inlet pipeline is connected to the front end of the coagulation tank, and a manual valve and an automatic valve are installed sequentially on the water inlet pipeline. Both the coagulant dosing tank and the oxidant dosing tank are equipped with tank level gauges, and a mixer is installed inside the coagulant dosing tank, the oxidant dosing tank, and the coagulation tank.

[0012] The ceramic membrane module system includes a ceramic membrane tank, a ceramic membrane tower installed in the ceramic membrane tank via a membrane tower support, an aeration component below the ceramic membrane tower and a spray component above it, and a water production component at the top of the ceramic membrane tower; the top of the ceramic membrane tank is connected to the overflow outlet at the top of the sedimentation tank.

[0013] The water production system includes a water production pipeline. Along the direction of liquid flow, a differential pressure transmitter, an automatic valve, a manual valve, a water production pump, a pressure gauge, a check valve, a manual valve, and a flow meter are installed in sequence on the water production pipeline. The front end of the water production pipeline is connected to the water production components, and the rear end of the water production pipeline is connected to a water production tank. The water production tank is equipped with a level gauge.

[0014] The water backwashing system includes a water backwashing pipeline connecting the product water tank and the ceramic membrane tower.

[0015] The air scrubbing system includes a blower, and a gas pipeline connects the blower to the aeration components.

[0016] The spray system includes spray piping connecting the production water tank and the spray components.

[0017] Chemical cleaning systems include acid cleaning systems and alkaline cleaning systems;

[0018] The pickling system includes an acid dosing tank and an acid dosing pipeline. The acid dosing pipeline is connected to the water backwash pipeline. The acid dosing pipeline is equipped with a manual valve, an acid dosing pump, a solenoid valve, and a check valve in sequence.

[0019] The alkaline washing system includes an alkaline dosing tank and an alkaline dosing pipeline. The alkaline dosing pipeline is connected to the water backwashing pipeline. The alkaline dosing pipeline is equipped with a manual valve, an alkaline dosing pump, a solenoid valve, and a check valve in sequence.

[0020] Agitators are installed inside the acid dosing tank and the alkali dosing tank.

[0021] The backwashing system includes a neutralization tank, which is connected to the bottom of the ceramic membrane tank by a drain pipe.

[0022] The automatic control system includes a PLC, which is connected to a host computer via control lines. The PLC is also connected to the pretreatment system, ceramic membrane module system, product water system, water backwashing system, air washing system, spray system, chemical cleaning system, and exhaust backwashing system via control lines.

[0023] The beneficial effects of this utility model are: This utility model uses a high-flux ceramic flat sheet membrane as the core, and is equipped with a water inlet system, a water production system, a water backwashing system, an air washing system, a spray system, a chemical cleaning system, an emptying backwashing system and an automatic control system, which can achieve efficient and stable operation of water treatment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] In the diagram: 1-Coagulant dosing tank; 2-Coagulant dosing pipeline; 3-Coagulant dosing pump; 4-Oxidant dosing tank; 5-Oxidant dosing pipeline; 6-Oxidant dosing pump; 7-Coagulation tank; 8-Sedimentation tank; 9-Inlet water pipeline; 10-Coagulant tank level gauge; 11-Agitator; 12-Ceramic membrane tank; 13-Membrane tower support; 14-Ceramic membrane tower; 15-Aeration assembly; 16-Spray assembly; 17-Permeate assembly; 18-Permeate pipeline; 19-Permeate pump; 20-Permeate tank; 21-Vacuum pipeline; 22-Vacuum generator; 23-Water backwash pipeline; 24-Backwash pump; 25-Fan; 26-Gas pipeline; 27-Spray pipeline; 28-Spray pump; 29-Acid dosing tank; 30-Acid dosing pipeline; 31-Acid dosing pump; 32-Alkali dosing tank; 33-Alkali dosing pipeline; 34-Alkali dosing pump; 35-Neutralization tank; 36-Drain pipeline; 37-Level gauge; 38-PLC; 39-PLC; 40-Manual valve; 41-Solenoid valve; 42-Check valve; 43-Automatic valve; 44-Pressure gauge; 45-Flow meter; 46-Differential pressure transmitter;

[0026] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0028] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] A ceramic flat sheet membrane filtration system includes a pretreatment system, a ceramic membrane module system, a product water system, a water backwashing system, an air washing system, a spray system, a chemical cleaning system, an air discharge backwashing system, and an automatic control system.

[0032] The ceramic membrane module system is connected to the pretreatment system at the front end and to the product water system at the back end. The ceramic membrane module system is equipped with a water backwashing system, an air washing system, a spray system, a chemical cleaning system, and an empty backwashing system. The pretreatment system, ceramic membrane module system, product water system, water backwashing system, air washing system, spray system, chemical cleaning system, and empty backwashing system are all connected to the automatic control system.

[0033] like Figure 1As shown, the system specifically includes: 1. Coagulant dosing tank; 2. Coagulant dosing pipeline; 3. Coagulant dosing pump; 4. Oxidant dosing tank; 5. Oxidant dosing pipeline; 6. Oxidant dosing pump; 7. Coagulation tank; 8. Sedimentation tank; 9. Inlet water pipeline; 10. Chemical tank level gauge; 11. Agitator; 12. Ceramic membrane tank; 13. Membrane tower support; 14. Ceramic membrane tower; 15. Aeration assembly; 16. Spray assembly; 17. Permeate assembly; 18. Permeate pipeline; 19. Permeate pump; 20. Permeate tank; 21. Vacuum pipeline; 22. Vacuum generator. 22. Water backwash pipeline; 23. Backwash pump; 24. Fan; 25. Gas pipeline; 26. Spray pipeline; 27. Spray pump; 28. Acid dosing tank; 29. ​​Acid dosing pipeline; 30. Acid dosing pump; 31. Alkali dosing tank; 32. Alkali dosing pipeline; 33. Alkali dosing pump; 34. Neutralization tank; 35. Drain pipeline; 36. Level gauge; 37. PLC; 38. PLC; 39. Manual valve; 40. Solenoid valve; 41. Check valve; 42. Automatic valve; 43. Pressure gauge; 44. Flow meter; 45. Differential pressure transmitter; 46.

[0034] The pretreatment system includes a coagulant dosing system, an oxidant dosing system, and a coagulation and sedimentation system;

[0035] The coagulant dosing system includes a coagulant dosing tank 1 and a coagulant dosing pipeline 2. The coagulant dosing pipeline 2 is equipped with a manual valve 40, a coagulant dosing pump 3, a solenoid valve 41 and a check valve 42 in sequence.

[0036] The oxidant dosing system includes an oxidant dosing tank 4 and an oxidant dosing pipeline 5. The oxidant dosing pipeline 5 is equipped with a manual valve 40, an oxidant dosing pump 6, a solenoid valve 41 and a check valve 42 in sequence.

[0037] The coagulation and sedimentation system includes a coagulation tank 7 and a sedimentation tank 8 connected in sequence;

[0038] The coagulant dosing tank 1 is connected to the coagulation tank 7 via the coagulant dosing pipeline 2, and the oxidant dosing tank 4 is connected to the coagulation tank 7 via the oxidant dosing pipeline 5. The front end of the coagulation tank 7 is connected to the water inlet pipeline 9, and a manual valve 40 and an automatic valve 43 are installed on the water inlet pipeline 9 in sequence. Both the coagulant dosing tank 1 and the oxidant dosing tank 4 are equipped with tank level gauges 10, and a mixer 11 is installed in the coagulant dosing tank 1, the oxidant dosing tank 4, and the coagulation tank 7.

[0039] The ceramic membrane module system includes a ceramic membrane tank 12, a ceramic membrane tower 14 installed in the ceramic membrane tank 12 via a membrane tower support 13, an aeration component 15 below the ceramic membrane tower 14 and a spray component 16 above the ceramic membrane tower 14, and a water production component 17 at the top of the ceramic membrane tower 14; the top of the ceramic membrane tank 12 is connected to the overflow port at the top of the sedimentation tank 8.

[0040] The water production system includes a water production pipeline 18. Along the liquid flow direction, the water production pipeline 18 is equipped with a differential pressure transmitter 46, an automatic valve 43, a manual valve 40, a water production pump 19, a pressure gauge 44, a check valve 42, a manual valve 40, and a flow meter 45. The front end of the water production pipeline 18 is connected to the water production component 17, and the rear end of the water production pipeline 18 is connected to the water production tank 20. The water production tank 20 is equipped with a level gauge 37. A vacuum pipeline 21 is provided between the top of the ceramic membrane tank 12 and the water production pipeline 18. The vacuum pipeline 21 is equipped with a solenoid valve 41 and a vacuum generator 22.

[0041] The water backwashing system includes a water backwashing pipeline 23 connecting the product water tank 20 and the ceramic membrane tower 14. Along the liquid flow direction, the water backwashing pipeline 23 is equipped with a manual valve 40, a backwashing pump 24, a pressure gauge 44, a check valve 42, a flow meter 45, and an automatic valve 43.

[0042] The air scrubbing system includes a blower 25, and a gas pipeline 26 is connected between the blower 25 and the aeration component 15. A pressure gauge 44, a check valve 42, a manual valve 40 and a flow meter 45 are sequentially installed on the gas pipeline 26 along the gas flow direction.

[0043] The spray system includes a spray pipe 27 connecting the production water tank 20 and the spray assembly 16. Along the liquid flow direction, the spray pipe 27 is provided with a manual valve 40, a spray pump 28, a pressure gauge 44, a check valve 42, a manual valve 40 and an automatic valve 43.

[0044] Chemical cleaning systems include acid cleaning systems and alkaline cleaning systems;

[0045] The pickling system includes an acid dosing tank 29 and an acid dosing pipeline 30. The acid dosing pipeline 30 is connected to the water backwash pipeline 23. The acid dosing pipeline 30 is equipped with a manual valve 40, an acid dosing pump 31, a solenoid valve 41 and a check valve 42 in sequence.

[0046] The alkaline washing system includes an alkaline dosing tank 32 and an alkaline dosing pipeline 33. The alkaline dosing pipeline 33 is connected to the water backwashing pipeline 23. The alkaline dosing pipeline 33 is equipped with a manual valve 40, an alkaline dosing pump 34, a solenoid valve 41 and a check valve 42 in sequence.

[0047] A mixer 11 is installed inside the acid dosing tank 29 and the alkali dosing tank 32.

[0048] The backwashing system includes a neutralization tank 35, which is connected to the bottom of the ceramic membrane tank 12 by a drain pipe 36. The drain pipe 36 is equipped with a manual valve 40 and an automatic valve 43 in sequence. The neutralization tank 35 is equipped with a stirrer 11 and a level gauge 37.

[0049] The automatic control system includes a PLC38, which is connected to a host computer 39 via control lines. The PLC38 is connected to the pretreatment system, ceramic membrane module system, product water system, water backwashing system, air washing system, spray system, chemical cleaning system, and exhaust backwashing system via control lines. All control steps are automated.

[0050] Process flow description:

[0051] I. Preprocessing:

[0052] The wastewater to be treated is lifted into the pretreatment system; coagulant is added to the pretreatment system, and then the water passes through the sedimentation tank 8 to initially remove larger particulate pollutants, and then enters the ceramic membrane tank 12.

[0053] II. Filtered Water Production:

[0054] The ceramic membrane tower 14 and the membrane tower support 13 are placed in the ceramic membrane tank 12 and submerged in water. The wastewater in the ceramic membrane tank 12 is transported to the product water tank 20 through the membrane element by negative pressure suction.

[0055] III. Backwashing System:

[0056] After the permeate is produced, a submersible backwash is performed. The backwash water enters the membrane element through the backwash line 23 and flows out from the surface of the membrane element, removing contaminants from the outer surface of the membrane element. At the same time, aeration at the bottom of the membrane element performs air scrubbing on the surface of the membrane element, thoroughly removing contaminants from the outer surface of the membrane element. After the submersible backwash is completed, the permeate is filtered.

[0057] IV. Emptying and backwashing:

[0058] After the system has been running for a certain period of time, it enters the drain and backwash mode. After draining and backwashing, it enters the water production mode.

[0059] Repeat the above process of filtering water, submersion backwashing, and draining backwashing.

[0060] V. Chemical Cleaning:

[0061] The operation of a chemical cleaning system is determined by time and transmembrane pressure difference.

[0062] After chemical cleaning is completed, the water filtration stage begins.

[0063] All of the above steps can be automated through a self-control system.

[0064] This invention uses a high-flux ceramic flat sheet membrane as its core, and is equipped with an inlet water system, a product water system, a water backwashing system, an air scrubbing system, a spray system, a chemical cleaning system, an exhaust backwashing system, and an automatic control system, which can achieve efficient and stable operation of water treatment.

[0065] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A ceramic flat sheet membrane filtration system characterized by, The system comprises a pretreatment system, a ceramic membrane group system, a water production system, a water backwashing system, a gas washing system, a spraying system, a chemical cleaning system, a emptying backwashing system and a self-control system. The front end of the ceramic membrane group system is connected with the pretreatment system and the rear end is connected with the water production system.

2. A ceramic flat sheet membrane filtration system according to claim 1, wherein, The pretreatment system comprises a coagulant dosing system, an oxidant dosing system and a coagulation sedimentation system. The coagulant dosing system comprises a coagulant dosing barrel (1) and a coagulant dosing pipeline (2), and the coagulant dosing pipeline (2) is sequentially provided with a hand valve (40), a coagulant dosing pump (3), an electromagnetic valve (41) and a check valve (42). The oxidant dosing system comprises an oxidant dosing barrel (4) and an oxidant dosing pipeline (5), and the oxidant dosing pipeline (5) is sequentially provided with a hand valve (40), an oxidant dosing pump (6), an electromagnetic valve (41) and a check valve (42). The coagulation sedimentation system comprises a coagulation tank (7) and a sedimentation tank (8) connected in sequence. The coagulant dosing barrel (1) is connected with the coagulation tank (7) through the coagulant dosing pipeline (2), the oxidant dosing barrel (4) is connected with the coagulation tank (7) through the oxidant dosing pipeline (5), the front end of the coagulation tank (7) is connected with a water inlet pipeline (9), and the water inlet pipeline (9) is sequentially provided with a hand valve (40) and an automatic valve (43).

3. A ceramic flat sheet membrane filtration system according to claim 2, wherein, The ceramic membrane group system comprises a ceramic membrane tank (12), and the ceramic membrane tank (12) is provided with a ceramic membrane tower (14) through a membrane tower support (13), the ceramic membrane tower (14) is provided with an aeration assembly (15) below and a spraying assembly (16) above, and the top of the ceramic membrane tower (14) is provided with a water production assembly (17).

4. A ceramic flat sheet membrane filtration system according to claim 3, wherein, The water production system comprises a water production pipeline (18), and the water production pipeline (18) is sequentially provided with a differential pressure transmitter (46), an automatic valve (43), a hand valve (40), a water production pump (19), a pressure gauge (44), a check valve (42), a hand valve (40) and a flowmeter (45) along the liquid flow direction, the front end of the water production pipeline (18) is connected with the water production assembly (17), the rear end of the water production pipeline (18) is connected with a water production tank (20), the water production tank (20) is provided with a liquid level meter (37), and a vacuum pumping pipeline (21) is arranged between the top of the ceramic membrane tank (12) and the water production pipeline (18), and the vacuum pumping pipeline (21) is provided with an electromagnetic valve (41) and a vacuum generator (22).

5. A ceramic flat sheet membrane filtration system according to claim 4, wherein, The water backwashing system comprises a water backwashing pipeline (23) connected between the water production tank (20) and the ceramic membrane tower (14), and the water backwashing pipeline (23) is sequentially provided with a manual valve (40), a backwashing pump (24), a pressure gauge (44), a check valve (42), a manual valve (40), a flowmeter (45) and an automatic valve (43) in sequence along the liquid flow direction.

6. A ceramic flat sheet membrane filtration system according to claim 5, wherein, The air washing system comprises a fan (25), and a gas pipeline (26) connected between the fan (25) and the aeration assembly (15), and the gas pipeline (26) is sequentially provided with a pressure gauge (44), a check valve (42), a manual valve (40) and a flowmeter (45) in sequence along the gas flow direction.

7. A ceramic flat sheet membrane filtration system according to claim 6, wherein, The spraying system comprises a spraying pipeline (27) connected between the water production tank (20) and the spraying assembly (16), and the spraying pipeline (27) is sequentially provided with a manual valve (40), a spraying pump (28), a pressure gauge (44), a check valve (42), a manual valve (40) and an automatic valve (43) in sequence along the liquid flow direction.

8. A ceramic flat sheet membrane filtration system according to claim 7, wherein, The chemical cleaning system comprises an acid cleaning system and an alkali cleaning system; The acid cleaning system comprises an acid dosing barrel (29) and an acid dosing pipeline (30), the acid dosing pipeline (30) is connected with the water backwashing pipeline (23), and the acid dosing pipeline (30) is sequentially provided with a manual valve (40), an acid dosing pump (31), an electromagnetic valve (41) and a check valve (42); The alkali cleaning system comprises an alkali dosing barrel (32) and an alkali dosing pipeline (33), the alkali dosing pipeline (33) is connected with the water backwashing pipeline (23), and the alkali dosing pipeline (33) is sequentially provided with a manual valve (40), an alkali dosing pump (34), an electromagnetic valve (41) and a check valve (42); The acid dosing barrel (29) and the alkali dosing barrel (32) are provided with a stirrer (11).

9. A ceramic flat sheet membrane filtration system according to claim 8, wherein, The emptying backwashing system comprises a neutralization tank (35), the neutralization tank (35) is connected with the ceramic membrane tank (12) at the bottom through an emptying pipeline (36), the emptying pipeline (36) is sequentially provided with a manual valve (40) and an automatic valve (43), the neutralization tank (35) is provided with a stirrer (11), and the neutralization tank (35) is provided with a liquid level meter (37).

10. The ceramic flat sheet membrane filtration system of claim 9, wherein, The automatic control system comprises a PLC (38), the PLC (38) is connected with an upper computer (39) through a control line, and the PLC (39) is connected with the pretreatment system, the ceramic membrane group system, the water production system, the water backwashing system, the air washing system, the spraying system, the chemical cleaning system and the emptying backwashing system through control lines.

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