Integrated ultrafiltration membrane water purification equipment

Abstract

The utility model discloses an integrated ultrafiltration membrane water purification equipment, including ultrafiltration membrane box, inside vertical installation has ultrafiltration membrane subassembly, the one side of ultrafiltration membrane box is provided with the water inlet that communicates with ultrafiltration membrane subassembly, and the other side is provided with the water outlet that communicates with ultrafiltration membrane subassembly, the water inlet position is higher than the water outlet, high -position water inlet portion, is located the ultrafiltration membrane box top, is used to clean the ultrafiltration membrane box, the sludge system is arranged in the one side of ultrafiltration membrane box and is located the water outlet below. The utility model has solved the problem of high power, high power consumption and high cost of pump equipment when backwashing or aeration in rural mountainous area. Realized the equipment very low power consumption operation, and the system is convenient for the use in remote power supply difficult area. Compared with traditional equipment, the present equipment simplifies the aeration and backwashing system, uses the gravity of high -position water inlet portion to clean the ultrafiltration membrane box, reduces the installation engineering and material use, and the cost is reduced obviously.

Description

Technical Field

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

[0002] Integrated water purification equipment based on ultrafiltration membranes is widely used in decentralized, small-scale water supply applications. However, existing integrated ultrafiltration membrane water purification equipment requires power supply, mainly due to the high power consumption of equipment such as fans and pumps in the membrane cleaning process (aeration, backwashing, etc.). In addition, some ultrafiltration membrane systems also require pump suction, resulting in a continuous high power consumption.

[0003] Furthermore, small-scale water treatment equipment in mountainous areas is often installed in remote locations, resulting in high power supply costs. In actual operation, solar power supply is limited by sunlight, and its stability cannot be guaranteed. Traditional equipment, on the other hand, has higher power requirements, which objectively restricts its use. At the same time, traditional equipment has more components, leading to higher production and operating costs. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated ultrafiltration membrane water purification device to solve the problems of high power consumption, high cost and high energy consumption of pump equipment when backwashing or aeration in rural mountainous areas.

[0005] This utility model is achieved through the following technical solution: An integrated ultrafiltration membrane water purification device includes: An ultrafiltration membrane box has an ultrafiltration membrane module installed vertically inside. The ultrafiltration membrane box has an inlet on one side that communicates with the ultrafiltration membrane module and an outlet on the other side that communicates with the ultrafiltration membrane module. The inlet is positioned higher than the outlet. The high-level water inlet, located above the ultrafiltration membrane tank, is used for cleaning the ultrafiltration membrane. The sludge removal system is located on one side of the ultrafiltration membrane box and below the outlet.

[0006] As one of the preferred technical solutions, the high-level water inlet includes a high-level water inlet pipe that is connected to the ultrafiltration membrane module, and a high-level water control valve is provided on the side of the high-level water inlet pipe near the ultrafiltration membrane tank.

[0007] As one of the preferred technical solutions, the high-level water inlet pipe is connected to the raw water pipe, and the raw water pipe is equipped with a water inlet valve, one end of which is connected to the water inlet.

[0008] As one of the preferred technical solutions, the sludge discharge system includes a sludge discharge pipe located at the lower part of one side of the ultrafiltration membrane box, and a sludge discharge valve is connected to the sludge discharge pipe.

[0009] As one of the preferred technical solutions, the height difference between the water inlet and the water outlet is 0.5m.

[0010] As one of the preferred technical solutions, the raw water pipe is connected to an overflow pipe, and one end of the overflow pipe is provided with a pressure relief port.

[0011] As one of the preferred technical solutions, the top of the ultrafiltration membrane box is provided with a balance port, and a one-way check valve is installed inside the balance port.

[0012] As one of the preferred technical solutions, the ultrafiltration membrane box is equipped with a PLC timer for controlling the opening or closing of the inlet valve, the sludge discharge valve, and the high water level control valve.

[0013] As one of the preferred technical solutions, the ultrafiltration membrane box is made of stainless steel.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. It achieves extremely low power consumption operation of the equipment, making it easy for the system to be used in remote areas with difficult power supply.

[0015] 2. Compared with traditional equipment, this equipment simplifies the aeration and backwashing system. During sludge discharge, the ultrafiltration membrane is cleaned by gravity of the high-level inlet water. Membrane cleaning is achieved through a simple structure, which significantly reduces costs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; The attached diagram shows the markings and corresponding component names: 1-Ultrafiltration membrane box, 11-Ultrafiltration membrane module, 2-High-level water inlet, 21-High-level water inlet pipe, 22-High-level water control valve, 3-Sludge discharge system, 31-Sludge discharge pipe, 32-Sludge discharge valve, 4-Raw water pipe, 5-Water inlet valve, 6-Protection system, 61-Overflow pipe, 62-Pressure relief port, 7-Balance port, 8-One-way check valve, 9-PLC timer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0018] In existing technologies, small-scale water treatment equipment in mountainous areas is often installed in remote locations, resulting in high power supply costs. In actual operation, solar power supply is limited by sunlight, and its stability cannot be guaranteed. Traditional equipment has high power requirements, which objectively restricts its use. At the same time, traditional equipment has more components, leading to higher production and operating costs.

[0019] Based on this, and considering the remote locations and limited power supply in some rural areas where water supply facilities are built, this embodiment provides an integrated ultrafiltration membrane water purification device, such as... Figure 1 As shown, it includes: An ultrafiltration membrane box 1 has an ultrafiltration membrane module 11 installed vertically inside. The ultrafiltration membrane box 1 has an inlet on one side that communicates with the ultrafiltration membrane module 11 and an outlet on the other side that communicates with the ultrafiltration membrane module 11. The inlet is positioned higher than the outlet. The high-level water inlet 2 is located above the ultrafiltration membrane tank 1 and is used to clean the ultrafiltration membrane. The sludge removal system 3 is located on one side of the ultrafiltration membrane box 1 and below the outlet.

[0020] The ultrafiltration membrane module 11 is vertically installed inside the ultrafiltration membrane tank 1. The ultrafiltration membrane module 11 is a submerged ultrafiltration membrane. Utilizing the low transmembrane pressure difference characteristic of submerged ultrafiltration membranes, the inlet is positioned higher than the outlet, maintaining the water level above the membrane module above the membrane's product water side. The hydrostatic pressure generated by this level difference serves as the driving force. Specifically, the height difference between the inlet and outlet is 0.5m. This provides sufficient hydrostatic pressure to complete the filtration and purification of the raw water. The advantage is that this device does not require a suction pump or pressurization equipment; it relies solely on gravity to achieve raw water filtration.

[0021] In addition, the bottom of the ultrafiltration membrane box 1 is equipped with a sludge discharge area and is connected to the sludge discharge system 3; the raw water flows from top to bottom across the membrane surface, the clean water flows out through the membrane pores from the outlet, and the suspended solids and particulate matter are trapped on the membrane surface and settle to the bottom sludge discharge area and finally discharged through the sludge discharge system 3.

[0022] Finally, when cleaning the ultrafiltration membrane, water is introduced through the high-level water inlet 2 to flush the ultrafiltration membrane. The flushed wastewater is discharged into the sludge discharge zone under gravity.

[0023] In this process, the ultrafiltration membrane of this embodiment has the following effects: First, the submerged ultrafiltration membrane can achieve moderate and stable membrane flux operation under low transmembrane pressure difference, avoiding a sharp drop in membrane flux due to excessive pressure difference. Second, the low transmembrane pressure difference helps reduce concentration polarization on the membrane surface, reducing the risk of ultrafiltration membrane fouling. Simultaneously, the submerged ultrafiltration membrane's good hydrophilicity and stronger anti-fouling ability further reduce the possibility of fouling. Third, because the submerged ultrafiltration membrane operates under low transmembrane pressure difference, the membrane module fouling rate is slower, resulting in a relatively longer maintenance cycle and lower maintenance costs.

[0024] Experiments have verified that the ultrafiltration membrane in this embodiment can maintain good filtration performance and provide stable and high-quality water treatment services.

[0025] In some embodiments, the high-level water inlet 2 includes a high-level water inlet pipe 21 connected to the ultrafiltration membrane assembly 11, and a high-level water level control valve 22 is provided on the side of the high-level water inlet pipe 21 near the ultrafiltration membrane tank 1. In this embodiment, the high-level water inlet pipe 21 is 2 meters long, drawing water from a high point in the mountain. By opening the high-level water level control valve 22, the water entering the ultrafiltration membrane tank 1 has gravitational potential energy, thereby flushing away contaminants attached to the upper surface of the ultrafiltration membrane.

[0026] In some embodiments, the elevated water inlet pipe 21 is connected to the raw water pipe 4, and the raw water pipe 4 is equipped with an inlet valve 5, one end of which is connected to the water inlet. During this process, the inlet valve 5 controls the water inflow, and the raw water pipe 4 can directly draw water from the elevated water inlet pipe 21 into the ultrafiltration membrane box 1 for purification.

[0027] In some embodiments, the sludge discharge system 3 includes a sludge discharge pipe 31 disposed on the lower side of one side of the ultrafiltration membrane box 1, and a sludge discharge valve 32 is connected to the sludge discharge pipe 31.

[0028] Specifically, the sludge discharge pipe 31 is connected to the ultrafiltration membrane module 11, and the sludge discharge valve 32 is used to control the operation or stop of the sludge discharge operation.

[0029] In some embodiments, a protection system 6 is provided on one side of the raw water pipe 4 to protect the ultrafiltration membrane. It is understood that when the ultrafiltration membrane becomes clogged, the membrane flux will decrease significantly, while the pressure of the raw water on the ultrafiltration membrane will gradually increase, potentially damaging the membrane. Specifically, the protection system 6 includes an overflow pipe 61 connected to the raw water pipe 4, with a pressure relief port 62 at one end.

[0030] When raw water enters the overflow pipe 61 under pressure, it will be discharged directly from the pressure relief port 62, thus maintaining a constant pressure on the ultrafiltration membrane and preventing damage to it. Additionally, staff can determine the ultrafiltration membrane flux by checking whether water is draining from the pressure relief port 62, and then proceed with subsequent cleaning and sludge removal operations.

[0031] In some embodiments, the top of the ultrafiltration membrane tank 1 is provided with a balance port 7, and a one-way check valve 8 is installed inside the balance port 7. The one-way check valve 8 does not leak water during normal water production, and during sludge discharge operation, it draws in outside air through the balance port 7 to balance the air pressure inside the tank with the outside air pressure.

[0032] In some embodiments, the ultrafiltration membrane box 1 is equipped with a PLC timer 9 for controlling the opening or closing of the inlet valve 5, the sludge discharge valve 32, and the high water level control valve 22.

[0033] In this embodiment, the sludge discharge valve 32, the water inlet valve 5, and the high water level control valve 22 are all solenoid valves, and the three valves are in normal water production state when they are not powered.

[0034] The specific process is as follows: PLC timer 9 presets the opening and closing times of sludge discharge valve 32, water inlet valve 5, and high water level control valve 22 and outputs electrical signals. The electrical signals are transmitted to the three solenoid valves. After receiving the signals, each solenoid valve drives its coil to be energized, thus opening or closing the sludge discharge valve 32, water inlet valve 5, and high water level control valve 22.

[0035] During sludge removal, sludge removal valve 32 is energized and opened for 30 seconds, then de-energized and closed. Sludge removal is performed periodically, with a cycle set to once every 1-2 days. No shutdown is required during sludge removal; other membrane modules can maintain continuous water production through zone control.

[0036] During membrane cleaning, the inlet valve 5 is energized and closed, the high water level control valve 22 is energized and opened, and the sludge discharge valve 32 is energized and opened for 2 minutes. After 2 minutes, all valves are de-energized and the water outlet state is restored.

[0037] Except for a small amount of electricity used for valve control, the entire water production process consumes no electricity. The equipment consumes no electricity during normal water production. Its power needs can be met by using low-power solar power or a small-scale hydroelectric generator.

[0038] In some embodiments, the ultrafiltration membrane box 1 is made of stainless steel. Specifically, the ultrafiltration membrane box 1 is made of 304 stainless steel. Firstly, 304 stainless steel has strong corrosion resistance and can resist corrosion from most acidic and alkaline media at room temperature, avoiding membrane box leakage or structural damage caused by corrosion. Secondly, 304 stainless steel meets food-grade standards (such as GB 4806.9-2016) and will not release harmful substances (such as lead and mercury), ensuring the safety of ultrafiltration effluent. Thirdly, its smooth surface makes it difficult for microorganisms or dirt to adhere, supporting online cleaning and online sterilization, reducing the risk of cross-contamination.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An integrated ultrafiltration membrane water purification device, characterized in that, include: An ultrafiltration membrane box has an ultrafiltration membrane module installed vertically inside. The ultrafiltration membrane box has an inlet on one side that communicates with the ultrafiltration membrane module and an outlet on the other side that communicates with the ultrafiltration membrane module. The inlet is positioned higher than the outlet. The high-level water inlet, located above the ultrafiltration membrane tank, is used for cleaning the ultrafiltration membrane. The sludge removal system is located on one side of the ultrafiltration membrane box and below the outlet.

2. The integrated ultrafiltration membrane water purification equipment according to claim 1, characterized in that, The high-level water inlet includes a high-level water inlet pipe that is connected to the ultrafiltration membrane module, and a high-level water control valve is provided on the side of the high-level water inlet pipe near the ultrafiltration membrane tank.

3. The integrated ultrafiltration membrane water purification equipment according to claim 2, characterized in that, The high-level water inlet pipe is connected to the raw water pipe, and the raw water pipe is equipped with an inlet valve, one end of which is connected to the water inlet.

4. The integrated ultrafiltration membrane water purification equipment according to claim 3, characterized in that, The sludge discharge system includes a sludge discharge pipe located on the lower side of one side of the ultrafiltration membrane box, and a sludge discharge valve is connected to the sludge discharge pipe.

5. The integrated ultrafiltration membrane water purification equipment according to claim 1, characterized in that, The height difference between the inlet and the outlet is 0.5m.

6. The integrated ultrafiltration membrane water purification equipment according to claim 3, characterized in that, The raw water pipe is connected to an overflow pipe, and a pressure relief port is provided at one end of the overflow pipe.

7. The integrated ultrafiltration membrane water purification equipment according to claim 1, characterized in that, The top of the ultrafiltration membrane box is provided with a balance port, and a one-way check valve is installed inside the balance port.

8. The integrated ultrafiltration membrane water purification equipment according to claim 4, characterized in that, The ultrafiltration membrane box is equipped with a PLC timer, which is used to control the opening or closing of the inlet valve, sludge discharge valve, and high water level control valve.

9. The integrated ultrafiltration membrane water purification equipment according to claim 1, characterized in that, The ultrafiltration membrane box is made of stainless steel.

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