Ultrafiltration water purification device

Abstract

The utility model relates to water purification treatment technical field, concretely relates to a kind of ultrafiltration water purification equipment;It contains column type pressure ultrafiltration membrane unit, column type pressure ultrafiltration membrane unit front end is connected with the precision filter for primary filtration, the water outlet of its rear end is connected to water purification tank to store purified water, water purification tank is connected with constant pressure frequency conversion supply group, for water supply to outside, and then through ultraviolet disinfection device connection water supply pipeline;Column type pressure ultrafiltration membrane unit is also connected with ultrafiltration CPI cleaning system and backwashing device;The present application is combined with photocatalytic filter membrane and backwashing, slows down the pollution of ultrafiltration membrane, prolongs the service life of membrane;The present application is adjusted filtering parameter according to water quality change by sensor and PLC control, improves processing efficiency and water quality stability, reduces energy consumption, improves energy utilization.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to an ultrafiltration water purification device. Background Technology

[0002] Ultrafiltration membranes are a filtration technology used for drinking water pretreatment, industrial water reuse, and municipal water supply. Existing ultrafiltration devices often require backwashing or mechanical cleaning to control membrane fouling, restore flux, and extend membrane life. However, due to the increased volatility of raw water quality, membrane fouling can still affect the stable operation of the system. Fouling of the membrane surface and pores can lead to decreased flux, increased transmission resistance, and increased energy consumption. Frequent manual cleaning increases operating costs and affects the system's continuous water supply capacity. Utility Model Content

[0003] The purpose of this utility model is to provide a reasonably designed ultrafiltration water purification device that addresses the defects and shortcomings of the existing technology and can solve the aforementioned defects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a column-type pressure ultrafiltration membrane unit, the front end of which is connected to a precision filter for primary filtration, and the rear outlet is connected to a purified water tank for storing purified water. The purified water tank is connected to a constant pressure variable frequency power supply unit for supplying water externally, and then connected to a water supply pipeline through an ultraviolet disinfection device; the column-type pressure ultrafiltration membrane unit is also connected to an ultrafiltration CPI cleaning system and a backwashing device.

[0005] Preferably, the backwashing device includes a backwash pump connected to a sodium hypochlorite generator, both of which draw water from the inlet pipe of the water tank, and the outlet of the backwash pump is connected to a column-type pressure ultrafiltration membrane unit.

[0006] Preferably, the front end of the ultrafiltration CPI cleaning system is connected to tap water via a mixing inlet.

[0007] Preferably, the column-type pressure ultrafiltration membrane unit is cleaned with chemicals through an ultrafiltration CPI cleaning system, and the column-type pressure ultrafiltration membrane unit is also equipped with a drain outlet for waste discharge, which is connected to the waste discharge pipe.

[0008] Preferably, the column-type pressure ultrafiltration membrane unit and the outlet water pipe are equipped with multiple sets of sensors for monitoring water quality, and the equipment is equipped with a control cabinet for controlling the operation of the equipment.

[0009] The beneficial effects of this utility model after adopting the above structure are: 1. This application combines photocatalytic filter membrane and backwashing to reduce ultrafiltration membrane fouling and extend membrane life.

[0010] 2. This application uses sensors and PLC control to adjust filtration parameters according to changes in water quality, thereby improving treatment efficiency and water quality stability, reducing energy consumption, and increasing energy utilization. Attached Figure Description

[0011] Figure 1 This is a process flow diagram of this utility model; Figure 2 This is a front view of the column-type pressure ultrafiltration membrane unit of this utility model; Figure 3 This is a left view of the column-type pressure ultrafiltration membrane unit of this utility model; Figure 4 This is a top view of the column-type pressure ultrafiltration membrane unit of this utility model.

[0012] Explanation of reference numerals in the attached figures: 1. Control cabinet; 2. Precision filter; 3. Column-type pressure ultrafiltration membrane unit; 4. Clean water tank; 5. Backwash pump; 6. Sodium hypochlorite generator; 7. Constant pressure variable frequency power supply; 8. Ultraviolet disinfection device; 9. Ultrafiltration CPI cleaning system; 10. Mixing inlet; 11. Main inlet; 12. Ultrafiltration inlet; 13. Backwash inlet; 14. Outlet; 15. Drain; 16. Air inlet header; 17. Water inlet header; 18. Concentrate header; 19. Product water header. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] See Figure 1 - Figure 4 As shown, it includes a column-type pressure ultrafiltration membrane unit 3. A precision filter 2 for primary filtration is connected to the front end of the column-type pressure ultrafiltration membrane unit 3. A main water inlet 11 for water intake is connected to the front end of the precision filter 2. Its outlet 14 is connected to the ultrafiltration inlet 12 of the column-type pressure ultrafiltration membrane unit 3. The outlet 14 of the column-type pressure ultrafiltration membrane unit 3 is connected to a purified water tank 4 to store purified water. A constant pressure variable frequency power supply unit 7 is connected to the purified water tank 4 for supplying water externally. Then, it is connected to the water supply pipeline through an ultraviolet disinfection device 8. The column-type pressure ultrafiltration membrane unit 3 is also connected to an ultrafiltration CPI cleaning system 9 and a backwashing device. The column-type pressure ultrafiltration membrane unit 3 is equipped with multiple ultrafiltration membrane units. At the top, there are a concentrated water header 18 for waste discharge and a product water header 19 for pure water output. At the bottom, there are an air inlet header 16 for air intake and a water inlet header 17 for water intake. All headers are connected to the ultrafiltration membrane units through branch pipes, enabling multi-path parallel filtration. The filter membrane adopts photocatalytic ultrafiltration membrane, which uses photocatalysis to reduce filter membrane fouling. The backwashing device includes a backwash pump 5, which is connected to a sodium hypochlorite generator 6. Both of them draw water from the inlet pipe of the clean water tank 4. The outlet of the backwash pump 5 is connected to the column pressure ultrafiltration membrane unit 3. The ultrafiltration CPI cleaning system 9 is connected to tap water via a mixing inlet 10 at its front end; The column-type pressure ultrafiltration membrane unit 3 is cleaned with chemicals through the ultrafiltration CPI cleaning system 9. The column-type pressure ultrafiltration membrane unit 3 is also equipped with a drain outlet 15 for waste discharge, which is connected to the waste discharge pipe in the basement and is cleaned by chemical washing. The column-type pressure ultrafiltration membrane unit 3 and the outlet water pipe are equipped with multiple sets of sensors for monitoring water quality. The sensors include a pH probe, a conductivity sensor, and a turbidity sensor, which are used to monitor the water quality at various locations during the water purification process. The equipment is equipped with a control cabinet 1 for controlling the operation of the equipment. The PLC program is used for overall control. According to the water quality of each area, the filtration parameters are adjusted to reduce energy consumption and improve energy utilization. If necessary, backwashing or chemical washing is activated to clean the membrane, reduce manual intervention, and improve water quality stability.

[0015] The system employs an immersion ultrafiltration membrane lined with PET braided tubing to ensure a tensile strength of no less than 200N. The membrane pore size is 10-20nm. The main inlet 11 is connected to a pretreatment system. When the raw water turbidity is high, the pretreatment system can be activated to pretreat the water, ensuring that the ultrafiltration influent turbidity is below 20NTU. At other times, the pretreatment system acts as a grit chamber, reducing the operating load on the ultrafiltration membrane and lowering energy consumption. After the pretreated water enters the ultrafiltration membrane tank, it passes through under siphon pressure, while substances larger than the membrane pore size are intercepted, achieving filtration through physical means.

[0016] The installation, connection, or setting methods of the components not detailed above are all common mechanical methods, and the specific structure, model, and coefficient indicators of all their components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be elaborated further.

[0017] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An ultrafiltration water purification device, comprising a column-type pressure ultrafiltration membrane unit (3), characterized in that: The column-type pressure ultrafiltration membrane unit (3) is connected to a precision filter (2) for primary filtration at the front end, and its outlet (14) at the rear end is connected to a water tank (4) to store purified water. The water tank (4) is connected to a constant pressure variable frequency power supply unit (7) for supplying water to the outside, and then connected to a water supply pipeline through an ultraviolet disinfection device (8). The column-type pressure ultrafiltration membrane unit (3) is also connected to an ultrafiltration CPI cleaning system (9) and a backwashing device.

2. The ultrafiltration water purification device according to claim 1, characterized in that: The backwashing device includes a backwash pump (5) connected to a sodium hypochlorite generator (6). Both draw water from the inlet pipe of the clean water tank (4), and the outlet of the backwash pump (5) is connected to the column pressure ultrafiltration membrane unit (3).

3. The ultrafiltration water purification device according to claim 2, characterized in that: The ultrafiltration CPI cleaning system (9) is connected to tap water at the front end through a mixing inlet (10).

4. The ultrafiltration water purification device according to claim 1, characterized in that: The column pressure ultrafiltration membrane unit (3) is cleaned with chemicals through the ultrafiltration CPI cleaning system (9). The column pressure ultrafiltration membrane unit (3) is also equipped with a drain outlet (15) for waste discharge, which is connected to the waste discharge pipe.

5. The ultrafiltration water purification device according to claim 1, characterized in that: The column-type pressure ultrafiltration membrane unit (3) and the outlet pipe are equipped with multiple sets of sensors for monitoring water quality. The equipment is equipped with a control cabinet (1) for controlling the operation of the equipment.

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