Immersed membrane treatment equipment

Abstract

The present invention relates to the technical field of water filtration, and discloses an immersed membrane treatment device, including an aeration chamber, an air supply chamber is provided at the upper end of the aeration chamber, an ultrafiltration group membrane is fixedly connected to the upper part of the air supply chamber, and a stainless steel fixing ring is fixedly installed at the outermost end of the lower part of the ultrafiltration group membrane. The immersed membrane treatment device ensures that the water body is in a disturbed state by providing a series of aeration tools, and can effectively ensure that there are no tiny impurities attached to the surface of the ultrafiltration group membrane. The holes on the surface of the aeration chamber are opened around the ultrafiltration group membrane. The gas transmitted by the backwash fan is sent to the raw water through the holes in the aeration chamber. Because the middle part of the entire ultrafiltration group membrane is in a relaxed state, it will spread to the surroundings under the action of the disturbance force of the water body, and the area of ​​the ultrafiltration membrane tube that was originally in contact with the water will instantly increase, so the speed of water purification will also become faster, which greatly improves the working efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of water filtering, in particular to an immersed membrane treatment device. Background Art

[0002] Ultrafiltration membrane is a polymer semi-permeable membrane used in the ultrafiltration process to separate polymer colloids or suspended particles of a certain size from the solution. Ultrafiltration membrane has become an important tool for modern water filtration due to its excellent filtration ability. There are many tiny holes on the surface of the ultrafiltration membrane, which can only allow water molecules to pass through, and other particles larger than water molecules will be rejected. There are two main types of ultrafiltration membranes on the market: pressure type and immersion type. The most popular one is the immersion type ultrafiltration membrane. For the specific working principle, please refer to Figure 1 .

[0003] Immersed ultrafiltration membranes often rely on water pressure and water replenishment principles to purify water. The raw water is basically in a static state. Over time, the isolated various tiny substances will be adsorbed on the surface of the filter membrane, which will not only easily clog the filter holes of the ultrafiltration membrane, but also greatly shorten the service life of the ultrafiltration membrane. Because the ultrafiltration membrane is relatively soft and cannot rely on the powerful power of a pump for direct extraction, the water purification efficiency is still a bit low. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned background technology, the present invention provides an immersed membrane treatment device, which has the advantages of fast water purification speed and prevention of impurity clogging, and solves the problems raised by the background technology.

[0005] The present invention provides the following technical solution: an immersed membrane treatment device, comprising an aeration chamber, an air supply chamber is opened at the upper end of the interior of the aeration chamber, an ultrafiltration group membrane is fixedly connected to the upper part of the air supply chamber, a stainless steel fixing ring is fixedly installed at the outermost end of the lower part of the ultrafiltration group membrane, and an aeration column is fixedly installed in the middle part of the ultrafiltration group membrane, a water storage chamber is fixedly installed on the top of the ultrafiltration group membrane, a water pumping pipe is fixedly connected to the upper part of the water storage chamber, an air supply pipe is fixedly connected to the left side of the aeration chamber, a two-way tap is fixedly connected to the right side of the air supply pipe, and a backwash fan pipe is fixedly connected to the right side of the two-way tap.

[0006] Preferably, an air pipe is provided on the aeration column, an air column is fixedly installed on the upper part of the air pipe, and a plurality of holes are provided on the surface of the air column.

[0007] Preferably, the ultrafiltration membrane adopts a honeycomb hexagonal structure, and the ultrafiltration membrane is connected to the upper part of the air supply chamber.

[0008] Preferably, the holes opened in the upper part of the aeration chamber surround the periphery of the ultrafiltration membrane.

[0009] Preferably, the stainless steel fixing ring is used to fix the bottom of the ultrafiltration group membrane and is connected to the aeration chamber.

[0010] Compared with the existing submerged membrane treatment equipment, the present invention has the following beneficial effects:

[0011] 1. The submerged membrane treatment equipment is equipped with a series of aeration tools to ensure that the water body is in a disturbed state, which can effectively ensure that there will be no tiny impurities attached to the surface of the ultrafiltration group membrane. The holes on the surface of the aeration chamber are opened around the ultrafiltration group membrane. The gas transmitted by the backwash fan is sent to the raw water through the holes in the aeration chamber. Under the action of force, the gas will become a series of small bubbles and move upward to drive the water body to stir and prevent the adsorption of tiny particles. In addition, the aeration column arranged on the air delivery chamber can also send the gas to the air column through the air pipe. Finally, the gas is discharged into the raw water through the air holes to drive the water body to stir. Because the middle part of the entire ultrafiltration group membrane is in a relaxed state, it will spread out to the surroundings under the action of the disturbance force of the water body. The contact area between the ultrafiltration membrane tubes that were originally in contact with each other and the water will instantly increase, so the water purification speed will also become faster, greatly improving the working efficiency of the equipment.

[0012] 2. The submerged membrane treatment equipment sets the ultrafiltration group membrane on the air delivery chamber and connects it with the upper part of the air delivery chamber. Therefore, part of the gas in the air delivery chamber will enter the water purification part in the middle of the ultrafiltration membrane tube under the action of force, and lift part of the clean water upward. The water sent away will be quickly replenished, and the continuous lifting cycle will work. With the cooperation of the pump, the water purification speed will be significantly improved, which greatly improves the working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the working principle of the ultrafiltration membrane structure of the present invention;

[0014] Figure 2 This is an overall schematic diagram of the ultrafiltration membrane structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the ultrafiltration membrane group after the aeration column structure of the present invention is working;

[0016] Figure 4 This is a schematic diagram of the aeration column structure of the present invention;

[0017] Figure 5 This is a schematic diagram of the structure distribution of the ultrafiltration group membrane of the present invention;

[0018] Figure 6 This is a schematic diagram of the pore distribution of the ultrafiltration group membrane and aeration chamber of the present invention.

[0019] In the figure: 1. Aeration chamber; 2. Air supply chamber; 3. Ultrafiltration membrane; 4. Stainless steel fixing ring; 5. Aeration column; 501. Air pipe; 502. Air column; 503. Air hole; 6. Water storage chamber; 7. Pumping pipe; 8. Air supply pipe; 9. Two-way head; 10. Backwash fan pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-6 A submerged membrane treatment equipment comprises an aeration chamber 1, an air supply chamber 2 is opened at the upper end of the aeration chamber 1, an ultrafiltration membrane 3 is fixedly connected to the upper part of the air supply chamber 2, a stainless steel fixing ring 4 is fixedly installed at the outermost end of the lower part of the ultrafiltration membrane 3, and an aeration column 5 is fixedly installed in the middle part of the ultrafiltration membrane 3, a water storage chamber 6 is fixedly installed on the top of the ultrafiltration membrane 3, a pumping pipe 7 is fixedly connected to the upper part of the water storage chamber 6, an air supply pipe 8 is fixedly connected to the left side of the aeration chamber 1, a two-branch head 9 is fixedly connected to the right side of the air supply pipe 8, and a backwash fan pipe 10 is fixedly connected to the right side of the two-branch head 9.

[0022] Among them, there is an air pipe 501 on the aeration column 5, and an air column 502 is fixedly installed on the upper part of the air pipe 501. A plurality of holes 503 are opened on the surface of the air column 502. The aeration column 5 is thin at the bottom and thick at the top. The airflow originally moves very fast in the narrow air pipe 501, and suddenly reaches the wide air column 502. The speed is greatly reduced, and the airflow finally transmitted is not very violent, and will not cause violent shaking to the ultrafiltration membrane 3. The main function of the aeration column 5 is to transmit gas to the outside through its own pores 503, generate bubbles to disturb the water body, and prevent fine garbage from being adsorbed on the ultrafiltration membrane 3. Through the soft structure of the entire ultrafiltration membrane 3, the pneumatic force generated by the aeration column 5 can disperse the ultrafiltration membrane 5 and expand its water purification area.

[0023] Among them, the ultrafiltration membrane 3 adopts a honeycomb hexagonal structure, and the ultrafiltration membrane 3 is connected to the upper part of the air supply chamber 2. The honeycomb structure is precise and delicate, which can ensure that the maximum clean water space can be generated in the same area. In addition, the structure is very tight and strong, which can ensure that the ultrafiltration membrane 3 can be used for a long time.

[0024] Among them, the holes opened in the upper part of the aeration chamber 1 are around the periphery of the ultrafiltration group membrane 3. Because the ultrafiltration group membrane 3 often appears as a whole, the aeration chamber 1 is located below the ultrafiltration group membrane 3. Generally, the water flow at the bottom of the water purification equipment is relatively static. The ultrafiltration group membrane 3 can often only absorb water molecules, and other harmful substances are often isolated from the outside. They are easy to be deposited in the lower part of the ultrafiltration group membrane 3 for a long time. After a long time, it is easy to block and damage the lower part of the ultrafiltration group membrane 3. The holes 503 on the aeration chamber 1 are used to inject air using a backwash fan. The air enters the raw water from the holes 503. Under the action of gravity, small bubbles are often formed and move upward. In this way, the continuous rising bubbles can ensure that the water body at the bottom of the ultrafiltration group membrane 3 always keeps flowing, and the isolated harmful particles will not stand still and attach to the ultrafiltration group membrane 3.

[0025] Among them, the stainless steel fixing ring 4 is used to fix the bottom of the ultrafiltration membrane 3 and is connected to the aeration chamber 1 to fix the lower part of the honeycomb ultrafiltration membrane 3, which greatly facilitates the installation of the ultrafiltration membrane 3. At the same time, the stainless steel fixing ring 4 is also provided to provide a fixed place for the ultrafiltration membrane 3 so that no raw water will penetrate into the bottom, thereby ensuring the cleanliness of the water purified by the ultrafiltration membrane 3.

[0026] Working principle: install all the equipment, place the ultrafiltration membrane 3 in the raw water and use the water pressure to work (there are very tiny holes on the surface of the ultrafiltration membrane 3 that can only allow water molecules to pass through), appropriately adjust the position of the aeration chamber 1 upwards, so that the middle part of the ultrafiltration membrane 3 is in a relaxed state, and the raw water enters the ultrafiltration membrane 3 under the action of pressure and becomes harmless pure water. At this time, start the backwash fan to send air to the diverter 9 through the backwash fan pipe 10, part of the air enters the aeration chamber 1, and part of it enters the air supply chamber 2 with the help of the air supply pipe 8. The air in the aeration chamber 1 begins to enter the raw water under the action of pressure, generating a large number of bubbles that move vertically upward. At this time, the originally calm water body begins to be disturbed (the harmful particles that were originally stationary and attached to the lower part of the ultrafiltration membrane 3 are stirred up by the water body), and part of the air in the air supply chamber 2 passes through the middle hole of the ultrafiltration membrane 3 The pure water is pushed upward, which speeds up the water intake speed of the water storage chamber 6 (when the gas force is slightly greater than that of the water body, the gas can push the water body to move upward partially, so that the water can be supplied continuously when the water is automatically replenished. Although the pushed length is not high, the number of ultrafiltration membranes in the ultrafiltration membrane 3 is very large, because the amount generated is also not small), and another part of the gas enters the air column 502 through the air pipe 501, and finally disperses through the holes 503 on the surface of the air column 502. The outflow of air will cause water disturbance. The middle part of the ultrafiltration membrane 3 is in a relaxed state and the material is soft. Therefore, under the action of water force, the middle part of the ultrafiltration membrane 3 will spread out to the surroundings (it can prevent the adhesion of particulate garbage, and at the same time, the contact area of ​​the scattered ultrafiltration membrane 3 with water will become larger, and the water purification efficiency will be further improved). Finally, the clean water produced will be pumped away by the pumping pipe 7.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An immersed membrane treatment device, comprising an aeration chamber (1), characterized in that: An air supply chamber (2) is provided at the upper end of the aeration chamber (1), an ultrafiltration membrane (3) is fixedly connected to the upper part of the air supply chamber (2), a stainless steel fixing ring (4) is fixedly installed at the outermost end of the lower part of the ultrafiltration membrane (3), and an aeration column (5) is fixedly installed in the middle part of the ultrafiltration membrane (3), a water storage chamber (6) is fixedly installed on the top of the ultrafiltration membrane (3), a water pumping pipe (7) is fixedly connected to the upper part of the water storage chamber (6), an air supply pipe (8) is fixedly connected to the left side of the aeration chamber (1), a two-way tap (9) is fixedly connected to the right side of the air supply pipe (8), and a backwash fan pipe (10) is fixedly connected to the right side of the two-way tap (9); The aeration column (5) has an air pipe (501), an air column (502) is fixedly mounted on the upper part of the air pipe (501), and a plurality of holes are formed on the surface of the air column (502); The ultrafiltration membrane (3) adopts a honeycomb hexagonal structure, and the ultrafiltration membrane (3) is connected to the upper part of the air supply chamber (2); The holes opened in the upper part of the aeration chamber (1) surround the periphery of the ultrafiltration membrane (3).

2. The submerged membrane treatment device according to claim 1, characterized in that: The stainless steel fixing ring (4) is used to fix the bottom of the ultrafiltration group membrane (3) and is connected to the aeration chamber (1).

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