TWM576073U - Tubular membrane filtering system - Google Patents

Abstract

The present invention proposes a tubular membrane filtration system comprising: a raw liquid tank loaded with a solution to be filtered; a pressurized pump connected to the raw liquid tank; and a tubular membrane filtration module separately associated with the pressurized pump and The raw liquid tank is connected, the tubular membrane filtration module filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filtration module comprises at least one tubular membrane filtration device, and each tubular membrane filtration device The utility model comprises: an outer sleeve; and a tubular film disposed in the outer sleeve; and a first-class discharge tank connected to the tubular membrane filter module, the drainage tank recovering and discharging the purified water.

Description

Tubular membrane filtration system

The present invention relates to a tubular membrane filtration system, and more particularly to a tubular membrane filtration system capable of solution filtration through a cross-flow filtration method for a long period of time.

The water crisis refers to the situation of global water resources relative to human needs. The main source of crisis is the lack of available water and water pollution. Therefore, how to find available water resources and solve water pollution is an urgent problem for all countries. One.

The prior art is directed at the problem of water crisis, and has been carried out in the manner of desalination and filtration of industrial wastewater. Seawater is the largest resource on the planet, including inexhaustible water resources. Developing and utilizing desalination technology is not only an important task for modern marine development, but also a new source of water for solving global water in the future. One of the important ways of resource crisis.

In industrial wastewater, the water source can be said to be the lifeline of the factory operation in the production process of the traditional or technology industry. Compared with the demand for water, the amount of water discharged after wastewater treatment is considerable, and in the production process, it is usually Emission of organic solvents, which can harm human health or affect natural ecology regardless of whether they flow into rivers or oceans. If some wastewater can be recovered in an appropriate way, in addition to providing another stable water supply source, it can reduce the total The discharge of wastewater will enable the effective use of water resources, and the prior art is directed to the treatment of wastewater. However, the energy required for the thin film method is large, and if the film is fouled by solid particles, the operation of the entire filtration system is often stopped in order to replace the film or other components, the filtration efficiency is greatly reduced, and the cost is relatively increased.

In view of this, the purpose of this creation is to propose a tubular membrane filtration system that uses a cross-flow filtration method for long-term filtration.

Based on the above purposes, the present invention proposes a tubular membrane filtration system comprising: a raw liquid tank loaded with a solution to be filtered; a pressurized pump connected to the raw liquid tank; and a tubular membrane filtration module, respectively The pressurized pump and the raw liquid tank are connected, and the tubular membrane filter module filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filter module comprises at least one tubular membrane filtering device, each tube The membrane filter device comprises: an outer sleeve, which may be a metal outer tube or a plastic outer tube made of polyvinyl chloride (PVC) or polypropylene (PP); and a tubular film disposed in the outer sleeve. The tubular membrane comprises: an inner layer support tube; a filter film layer disposed around the outer side of the inner layer support tube; and an outer support tube disposed around the outer side of the filter film layer; The tubular membrane filtration module is connected, and the drainage tank recovers and discharges the purified water; wherein each tubular membrane filtration device is connected to each other in series or in parallel.

The above brief description of this creation aims to provide a basic explanation of several aspects of the creation and technical features of the creation. The creation brief is not a detailed description of the creation, so its purpose is not to specifically enumerate the key or important elements of the creation, nor to define the scope of the creation, but to present several concepts of the creation in a concise manner.

In order to understand the technical features and practical functions of the present invention, and to implement according to the contents of the specification, the following further describes the preferred embodiment as shown in the following figure:

The present invention proposes a tubular membrane filtration system for filtering solutions of seawater, industrial wastewater, and residential wastewater by means of at least one tubular membrane filtration device in a cross flow manner.

First, please refer to the first (A) diagram and the first (B) diagram at the same time. The first (A) diagram is a schematic diagram of the tubular membrane filtration system of the preferred embodiment, and the first (B) diagram is a comparison of the creation. A schematic diagram of the direction of liquid flow in a preferred embodiment. As shown in the first (A) and the first (B), the tubular membrane filtration system 1 of the present embodiment comprises: a raw liquid tank 10 loaded with a solution to be filtered; a pressurized pump 20, transmitted through The tube is connected to the raw liquid tank 10; a tubular membrane filter module 30 is connected to the pressurized pump 20 and the raw liquid tank 10 through a transfer line, and the tubular membrane filter module 30 filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filtration module 30 comprises at least one tubular membrane filtration device 300; and a first-class discharge tank 40 connected to the tubular membrane filtration module 30 through a delivery conduit. The drainage tank 40 recovers the purified water discharged from the tubular membrane filtration module 30, and discharges the purified water to the outside.

In addition, a first water flow meter 23 may be disposed on the transfer line between the pressurized pump 20 and the tubular membrane filter module 30, and the tubular membrane filter module 30 and the drainage tank A second water flow meter 34 may also be disposed on the transfer line between 40, and a third water flow meter 33 is disposed on the transfer line between each of the tubular membrane filter units 300. The purpose of the first water flow meter 23 is to check whether the water flow rate of the pressurized pump 20 up to the tubular membrane filtration module 30 can sufficiently support the operation of the entire tubular membrane filtration system 1, and set the second water flow. The purpose of the meter 34 and the third water flow meter 33 is to check whether the water flow rate in the tubular membrane filter module 30 is abnormal. If the water flow rate of the second water flow meter 34 or the third water flow meter 33 is too low, it may be a tubular type. The tubular membrane filtration device 300 in the membrane filtration module 30 is clogged with sludge, resulting in a decrease in filtration effect, and it is necessary to clean or replace the tubular membrane filtration device 300 in which the filtration effect is affected.

It should be noted that each of the tubular membrane filtration devices 300 in the tubular membrane filtration module 30 is tilted in different directions of rotation so that the purified water can flow to the drainage along each tubular membrane filtration device 300. In the slot 40, no other power propulsion device is required. Further, when the number of the tubular membrane filtration devices 300 in the tubular membrane filtration membrane group is more than one, each tubular membrane filtration device 300 is connected to each other in series or in parallel.

The solution to be filtered is juice, seawater, industrial wastewater, civil sewage, chemical concentrate or high volatile solution (VOC), etc., and the solution may also be concentrated waste liquid filtered through the tubular membrane filtration module 30. , Circulating filtration to increase the recovery rate of wastewater.

In other possible embodiments, the tubular membrane filtration system 1 may further include a neutralization tank 50 disposed between the tubular membrane filtration module 30 and the drainage tank 40, and through the delivery pipeline respectively The tubular membrane filtration module 30 is connected to the drainage tank 40. The purpose of the neutralization tank 50 is to add the pH adjusting agent to the purified water filtered by the tubular membrane filtration mold 30 before being discharged to the drainage tank 40. In order to neutralize the pH value of the purified water, the pH value is close to the pH value of 6 to 9, and it is better that the pH value approaches 7 to avoid polluting the ecological environment.

In other possible embodiments, the tubular membrane filtration system 1 may further include a sampling tank 60 connected to the drainage tank 40 through a delivery pipeline for sampling to detect whether the purified water in the drainage tank 40 meets the discharge to The standard for the external environment.

Next, please refer to the second figure, which is a schematic diagram of the tubular membrane filtration device of the preferred embodiment. As shown in the second figure, the tubular membrane filter device 300 of the present embodiment includes an outer sleeve 340, which may be a metal outer tube or a plastic outer tube made of polyvinyl chloride (PVC) or polypropylene (PP); a tubular film 350 disposed inside the outer sleeve 340, the tubular film 350 comprising: an inner layer support tube 310; a filter film layer 320 disposed around the outer side of the inner layer support tube 310; and an outer layer The support tube 330 is disposed on the outer side of the filter film layer 320. The inner diameter of the tubular film 350 is about 5-50 mm. In other possible embodiments, the arrangement of the tubular film 350 may also be: a filter film layer 320, an inner layer support tube 310 disposed around the outer side of the filter film layer 320; and an outer support tube 330 surrounding It is disposed on the outer side of the inner layer support tube 310.

In this embodiment, the inner layer support tube 310, the filter film layer 320 and the outer layer support tube 330 of the tubular film 350 are all tubular, and the inner layer support tube 310 and the outer layer support tube 330 are made of PET or PP. Non-woven, but not limited to it, any other material with permeability and strength can be used. The filter film layer 320 may be polystyrene (PS), polyethylene (PE), polyvinylidene fluoride (PVDF), polyether oxime (PES) or polytetrafluoroethylene (PTFE) or a combination thereof, and Tetrafluoroethylene (PTFE) is the best. In addition to the characteristics of heat resistance, flame resistance, acid and alkali resistance, water repellent, etc., the polytetrafluoroethylene (PTFE) filter film layer 320 can also pull the nodes up and down and left and right by the structure in which the fibers inside the film are physically locked. The polytetrafluoroethylene (PTFE) filter film layer 320 is reduced in creep phenomenon, and if the polytetrafluoroethylene (PTFE) filter film layer 320 is produced, mixed with activated carbon or other active materials. It can also additionally achieve the function of purifying water.

The pore size of the polytetrafluoroethylene filter membrane layer 320 is between 0.01 μm and 10 μm, and the pore distribution ratio of the polytetrafluoroethylene pore filtration membrane layer 320 is between 10% and 99%. The film thickness of the polytetrafluoroethylene pore filtration membrane layer 320 is between 1 μm and 100 μm, and the pore diameter, pore distribution rate and film thickness can be determined according to a solution to be treated by the user (such as seawater, industrial wastewater and sewage). The quality is different and changes are made. This creation should not be limited to this.

In operation, the feed solution is typically injected from one end of the tubular membrane 350 using a tubular feed, and a portion of the solution is supported by the inner support tube 310 and the interior of the filter membrane layer 320 as the solution passes through the tubular membrane 350. The filter penetrates to the outside of the filter film layer 320 and the outer support tube 330 to form purified water, and remains in the outer sleeve 340; at the same time, the filtered residual solution remains in the filter film layer 320 and the inner support tube. The inside of the 310 forms a concentrated waste liquid, and flows to the other end of the tubular film 350, and delivers the concentrated waste liquid to the inside of the tubular film 350 in the next tubular membrane filtration device 300 via a transfer line. It is worth noting that the tube film 350 of this creation is filtered by cross-flow. The main feature of cross-flow filtration is that the direction of solution flow is interlaced with the direction of solution filtration. During the filtration process, the solution will Purified water is formed by filtration through the filtration membrane layer, and part of the deposit remaining on the inner surface of the filtration membrane layer 320 is washed away by the continuous flow of the solution, so that the blocking rate of the sludge can be effectively reduced, thereby improving the filtration device. Service life. Here, reference can be made to the third figure, which is a comparison diagram of the filtering effect between the conventional full-flow filtering and the original cross-flow filtering. It can be clearly seen from the figure that the conventional full-flow filtering method has better performance in the initial stage of filtration. Filtration effect, however, as the filtration time increases, the clogging rate will increase significantly and the over-rate effect will decrease. The cross-flow filtration method has no better filtration effect than the full-flow type at the initial stage. The advantage of the type of filtration is that it has high stability and long service time, and the possibility of clogging of the filter film layer is low, and it is not necessary to repeatedly rinse.

Finally, please refer to the fourth figure, which is a flow chart of the operation method of the tubular membrane filtration system of the preferred embodiment. As shown in the fourth figure, the method for operating the tubular membrane filtration system of the present invention comprises the following steps: (A) driving a solution in a raw liquid tank 10 through a pressurized pump 20 to a tubular membrane filtration. (B) the tubular membrane filtration module 30 filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filtration module 30 comprises at least one tubular membrane filtration device 300, each A tubular membrane filtration device 300 includes: an outer sleeve 340, which may be a metal outer tube or a plastic outer tube made of polyvinyl chloride (PVC) or polypropylene (PP); and a tubular film 350 disposed thereon. In the outer sleeve 340, the tubular film 350 comprises: an inner layer support tube 310; a filter film layer 320 disposed around the outer side of the inner layer support tube 310; and an outer support tube 330 disposed around the filter The outer side of the film layer 320; and (C) the filtered purified water flows to the first-stage tank 40 outside the tubular film 350; and (D) the filtered waste liquid is filtered in the tube The inside of the membrane 350 flows into the raw liquid tank 10.

Wherein each of the tubular membrane filtration devices 300 are connected in series or in parallel with each other, and the two are inclined in different rotation directions, so that the purified water flows to the drainage tank 40 along the outer sleeve 340 of each tubular membrane filtration device 300. .

First, in the step (A), the pressurizing pump 20 pushes the solution to be filtered in the raw liquid tank 10 into the tubular membrane filter module 30 for filtration.

Furthermore, in the step (B), the tubular membrane filtration module 30 filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filtration module 30 comprises at least one tubular membrane filtration device. 300. The tubular membrane filtration module 300 is filtered by means of a cross-flow filtration through a tubular membrane 350 in each tubular membrane filtration device 300. When the solution passes through the tubular membrane 350, a portion of the solution is infiltrated from the inside of the filtration membrane layer 320 to the outside of the filtration membrane layer 320 to form purified water, and remains in the outer sleeve 340; at the same time, the filtered residue The solution remains in the interior of the filter membrane layer 320 to form a concentrated waste liquid, and flows to the other end of the tubular membrane, and delivers the concentrated waste liquid to the tube in the next tubular membrane filtration device 300 via a transfer line. The inside of the membrane 350. .

It should be noted that if a plurality of tubular membrane filtration devices 300 are simultaneously connected in series or in parallel, the concentrated waste liquid filtered by the previous tubular membrane 350 can enter the tubular membrane 350 in the next tubular membrane filtration device 300. Filtration and continuous circulation according to this; in other words, if a plurality of tubular membrane filtration devices 300 are simultaneously connected in series or in parallel, the filtration effect of the solution to be filtered can be effectively improved. However, the series or parallel connection of the plurality of tubular membrane filtration devices 300 also represents that the aforementioned pressurized pump 20 must provide greater kinetic energy to fully drive the solution to be filtered into each of the tubular membrane filtration devices 300. The operation of the system 1 is maintained. Therefore, the user can determine the number of series or parallel connection of the tubular membrane filtration device 300 in the tubular membrane filtration module 30 according to the type of the solution to be filtered or the cleanliness of the purified water after filtration. This creation is not limited to this.

Further, in the step (C), the filtered purified water can flow through the outer sleeve 340 outside the tubular membrane 350 to the first-class tank 40, notably, due to the tubular membrane of the present invention. The filter devices 300 are tilted in different directions of rotation so that the purified water can flow into the flow channel along the outer sleeve 340 in each of the tubular membrane filtration devices 300 without the need for additional power equipment.

Finally, in step (D), the concentrated waste liquid filtered by the tubular membrane filtration module 30 is returned to the raw liquid tank 10 through a transfer line connected to the tubular membrane 350 for circulation filtration to improve Waste water recovery rate.

However, the above is only the preferred embodiment of the present invention. When it is not possible to limit the scope of the creation of the present invention, the simple changes and modifications made according to the scope and description of the patent application are still the creation. Within the scope of coverage.

1‧‧‧ tubular membrane filtration system

10‧‧‧ raw liquid tank

20‧‧‧Pressure pump

23‧‧‧First water flow meter

30‧‧‧ tubular membrane membrane module

33‧‧‧ Third Water Flow Meter

34‧‧‧Second water flow meter

300‧‧‧ tubular membrane filter

310‧‧‧Inner support tube

320‧‧‧Filter film layer

330‧‧‧Outer support tube

340‧‧‧External casing

350‧‧‧ tubular membrane

40‧‧‧Exhaustion trough

50‧‧‧ Neutralization tank

60‧‧‧Sampling tank

(A)-(D)‧‧‧ steps

The first (A) diagram is a schematic view of a tubular membrane filtration system of the preferred embodiment.

The first (B) diagram is a schematic view of the liquid flow direction of the preferred embodiment of the present invention.

The second figure is a schematic view of a tubular membrane filtration device according to a preferred embodiment of the invention.

The third figure is a comparison of the filtering effects of the conventional full-flow filtering and the original cross-flow filtering.

The fourth figure is a flow chart of the operation method of the tubular membrane filtration system of the preferred embodiment.

Claims (10)

A tubular membrane filtration system comprising: a raw liquid tank loaded with a solution to be filtered; a pressurized pump connected to the raw liquid tank; a tubular membrane filtration module, respectively, and the pressurized pump and the raw liquid tank Connecting, the tubular membrane filtration module filters the solution to form a purified water and a concentrated waste liquid, wherein the tubular membrane filtration module comprises at least one tubular membrane filtration device, and each tubular membrane filtration device comprises: An outer sleeve; and a tubular film disposed in the outer sleeve, the tubular membrane comprising: a filter film layer; an inner support tube; and an outer support tube disposed around the filter film layer and the outer sleeve The outer side of the inner support tube; and the first-class sump, connected to the tubular membrane filter module, the drain tank recovers and discharges the purified water; wherein each tubular membrane filter device is connected to each other in series or in parallel . The tubular membrane filtration system of claim 1, wherein a first water flow meter is further disposed between the pressurized pump and the tubular membrane filtration module. The tubular membrane filtration system of claim 1, wherein a second water flow meter is further disposed between the tubular membrane filtration module and the drainage tank. The tubular membrane filtration system of claim 1, wherein each of the tubular membrane filtration devices is further provided with a third water flow meter between each other. The tubular membrane filtration system of claim 1, wherein the filtration membrane layer is made of polystyrene, polyethylene, polyvinylidene fluoride, polyether oxime, polytetrafluoroethylene (PTFE) or a combination thereof. The tubular membrane filtration system of claim 5, wherein the filtration membrane layer has a pore diameter of between 0.01 μm and 10 μm, and the filtration membrane layer has a pore distribution ratio of 10% to 99%. The thickness of the filter film layer is between 1 μm and 100 μm. The tubular membrane filtration system of claim 1, wherein each of the tubular membrane filtration devices is tilted in different directions of rotation so that the purified water flows along the outer casing of each tubular membrane filtration device. Exhaust trough. The tubular membrane filtration system of claim 1, wherein the tubular membrane filtration system further comprises a neutralization tank disposed between the tubular membrane filtration module and the drainage tank. The tubular membrane filtration system of claim 1, wherein the tubular membrane filtration system further comprises a sampling tank connected to the drainage tank. The tubular membrane filtration system of claim 1, wherein the solution is juice, seawater, industrial wastewater, municipal wastewater, chemical concentrate or high volatile solution (VOC).