WO2016175466A1 - Multi-channel flat membrane, module thereof, and water treatment apparatus including module - Google Patents

Abstract

A water treatment apparatus according to one embodiment of the present invention comprises: a housing of which the upper part and the lower part are open; a plurality of multi-channel flat membrane modules disposed inside the housing, and filtering polluted water inside the housing; water collection parts arranged at both end portions of the multi-channel flat membrane module, inserted into and fixed to the inside of the housing, and collecting treated water purified in the multi-channel flat membrane modules; and a discharge port connected to the water collection parts, formed at one side or both sides of the outer peripheral surface of the housing, and discharging the purified and treated water to the outside.

Description

Multi-porous flat membrane, modules thereof and water treatment apparatus comprising the same

The present invention relates to a multi-pore flat membrane, a module thereof, and a water treatment apparatus including the same, and more particularly, to a water treatment apparatus including a flat membrane having a plurality of hollows and a module in which the flat membrane is integrated.

Waste water is purified after being treated at a sewage treatment plant and discharged to a river. In sewage treatment plants, various methods are used to purify the waste water. Generally, separation membranes are classified according to the waste water treatment method. The membranes are mainly composed of submerged flat membranes and hollow fiber membranes.

The flat module (hereinafter, referred to as flat membrane module) used as an immersion type refers to a device formed by inserting a film formed in a planar or sheet form. Flat membrane module is not only contaminant sticking well, but also easy to remove contaminants, and compared with hollow fiber membrane module, there is little risk of damaging the membrane during operation, and thus, it requires less operating cost. It is widely used in the water treatment industry, such as factory wastewater treatment, reuse, and reverse osmosis membrane pretreatment.

However, the flat membrane module is known to have a low treatment flow rate because of a vertical crossover between the suction pressure direction and the water flow direction in the separation membrane. In addition, the nonwoven fabric positioned between the separator and the support merely serves to prevent the adhesion between the separator and the support, thereby preventing the flow of the treated water, thereby causing a limitation in the treatment capacity per unit area.

In order to manufacture a flat membrane module, heat-sealing is usually performed on a panel having a thickness of at least 4 mm or more and usually 8 mm. As a result, it is known that the degree of integration is lower than that of the hollow fiber membrane module. In order to manufacture the flat membrane, a polymer solution must be cast on the nonwoven fabric or woven fabric, and a separate nonwoven fabric or woven fabric that functions as a spacer must be provided to prevent the flow of the treated water by sticking to the flat membrane and the panel. As a result, subsidiary materials such as panels, non-woven fabrics, and woven fabrics are used to manufacture hollow fiber membranes, thereby increasing costs.

The flat membrane module has a merit of less fouling due to the effect of air cleaning due to the regular arrangement compared to the hollow fiber membrane, while the backwash is difficult, and the inconvenience of having to clean the chemical from the outside when the fouling occurs There is this.

On the other hand, recently, a flat membrane module capable of reverse washing has been developed, but it is related to a flat membrane module supporting the flat membrane with a female and a male screw to prevent the flat membrane from swelling during the reverse washing process. It is hard to expect durability (patent document 1).

Therefore, the inventors of the present invention can form a flat membrane capable of backwashing, which is unpredictable in the past, by exhibiting performance similar to that of a hollow fiber membrane by forming a plurality of hollows in the flat membrane, thereby significantly improving long-term durability. With this in mind, the present invention has been completed.

[Preceding technical literature]

[Patent Documents]

Korean Patent Publication 2014-0001528

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to realize the advantages of the hollow fiber membrane and the flat membrane, in particular, a back-washing multi-porous flat membrane, its module and including the same It is to provide a water treatment device.

The present invention provides a multi-hole flat membrane for water treatment in which a plurality of hollows are formed side by side.

The present invention also provides a multi-hole flat membrane module for water treatment in which the multi-pore flat membrane is integrated.

In addition, the water treatment apparatus according to an embodiment of the present invention, the upper and lower open housing;

A plurality of multi-pore membrane modules disposed within the housing and configured to filter the contaminated water within the housing; A collecting unit disposed at both ends of the multi-hole flat membrane module and inserted into and fixed to the housing to collect treated water purified by the multi-hole flat membrane module; And a discharge port connected to the water collecting treatment unit and formed on one or both sides of the outer circumferential surface of the housing and for discharging the treated water to the outside.

In addition, the multi-hole flat membrane module comprises a first multi-hole flat membrane formed in a hollow shape; And a second multi-hole flat membrane formed so as to be continuously disposed in contact with the outer circumferential surface of the first multi-hole flat membrane, wherein the first multi-hole flat membrane and the second multi-hole flat membrane are suitably formed to repeat sequentially.

In addition, the diameters of the first multi-pore flat membrane and the second multi-pore flat membrane are preferably formed to be equal to each other.

In addition, the diameters of the first multi-pore flat membrane and the second multi-pore flat membrane may be different from each other.

In addition, the first multi-hole flat membrane formed in a hollow shape; And a second multi-hole flat membrane formed so as to be continuously disposed in contact with the outer circumferential surface of the first multi-hole flat membrane, wherein the first multi-hole flat membrane and the second multi-hole flat membrane are suitably formed to repeat sequentially.

Further, the diameters of the first multi-pore flat membrane and the second multi-pore flat membrane are formed to be equal to each other.

In addition, the diameters of the first multi-pore flat membrane and the second multi-pore flat membrane may be different from each other.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional, lexical sense, and the inventors will appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can.

According to an embodiment of the present invention, the multi-pore flat membrane, a module thereof, and a water treatment apparatus including the same provide a multi-pore flat membrane module having a multi-hollow shape by sequentially repeating the first multi-pore flat membrane and the second multi-pore flat membrane. It is effective.

In addition, by sequentially repeating the first multi-hole flat membrane and the second multi-hole flat membrane, there is an effect of not using a film coated on a separate nonwoven or woven fabric.

In addition, by sequentially repeating the first multi-hole flat membrane and the second multi-hole flat membrane, there is an effect of providing a multi-pore flat membrane module with improved filling density.

In addition, by sequentially repeating the first multi-hole flat membrane and the second multi-hole flat membrane, there is an effect that the specific surface area is larger than the conventional flat membrane.

In addition, by sequentially repeating the first multi-pore flat membrane and the second multi-pore flat membrane, the surface of the multi-pore flat membrane has an effect of making uniform micropores.

In addition, by sequentially repeating the first multi-pore flat membrane and the second multi-pore flat membrane, the entire surface of the pores of the multi-pore flat membrane has a uniform effect.

Further, by sequentially repeating the first multi-pore membrane and the second multi-pore membrane, there is an effect of providing a water treatment apparatus capable of back washing.

1 is a perspective view of a multi-hole flat membrane module according to an embodiment of the present invention.

2 is a side view of FIG. 1;

3 is an exemplary view of a water treatment device according to another embodiment of the present invention.

Figure 4 is an exemplary view of the collecting unit is assembled to the multi-hole flat membrane module according to the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. In the present specification, in adding reference numerals to the components of each drawing, it should be noted that the same components as possible, even if displayed on different drawings have the same number as possible. In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. In addition, in describing the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view of a multi-hole flat membrane module according to an embodiment of the present invention, Figure 2 is a side view of Figure 1, Figure 3 is an exemplary view of the water treatment apparatus according to another embodiment of the present invention and Figure 4 is It is an exemplary view that the water collecting unit is assembled to the multi-hole flat membrane module according to.

Referring to Figures 1 and 2, the multi-hole flat membrane module according to an embodiment of the present invention, the first multi-hole flat membrane 110 formed in a hollow shape; And a second multi-hole flat membrane 130 formed to be continuously disposed in contact with the outer circumferential surface of the first multi-hole flat membrane 110, wherein the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 are It is formed to repeat sequentially.

Multi-hole flat membrane module 100 is formed by the integration of multi-hole flat membrane for water treatment. That is, the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 are formed in parallel with a plurality of hollows. The first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 are formed in a hollow shape. The first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 separate and remove various contaminants or bacteria contained in the liquid, especially in water, on the surface. The first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 have fine holes formed on the surface thereof. The first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 move through a space formed at the center through which raw water is introduced through the hole. Therefore, since the first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 do not pass through the holes (pores) formed in the surface of the various foreign matters, only clean water moves to the center of the hollow.

The material of the first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 may include a polymer including a polymer including a vinyl polymer and an olefin polymer. The hydrophobic polymer may be polyethylene (PE) resin, polypropylene (PP) resin, PVC resin, polysulfone resin, polyether sulfone resin, sulfonated polysulfone resin, polyvinylidene fluoride (PVDF) resin, Polyacrylonitrile (PAN) resins, polyimide resins, polyamideimide resins, polyetherimides and the like can be used, but are not necessarily limited thereto. These can be used individually or in mixture of 2 or more types. Among these, it may be a homopolymer of polyvinylidene fluoride (PVDF) or a fluorine-containing polymer such as polyvinylidene fluoride (PVDF) copolymer.

In addition, the material of the first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 is made of a material such as polyamide and provided with a plurality of nano filtration membranes having micropores of 0.0005 to 0.001 μm in the contaminated water. Nanofiltration of trace elements such as arsenic, cadmium, lithium, rubidium, iodine, magnesium, strontium, bromine and uranium You may.

Referring to FIG. 2, it is preferable that the first multi-hole flat membrane 110 and the second multi-porous flat membrane 130 are arranged in a straight line and repeat N times sequentially with each other. Referring to the diameters of the centers of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130, the diameters of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 are equal to each other. It may also be formed (see a in FIG. 2). This allows the multi-pore flat membrane module 100 to have a constant pore structure. That is, the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 have a predetermined distance by removing the uneven portion. Therefore, in the multi-hole flat membrane module, the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 have a constant pore structure.

 2, the diameters of the first multi-hole flat membrane 110 and the second multi-porous flat membrane 130 may be formed differently. That is, the first multi-pore flat membrane 110 and the second multi-pore flat membrane 130 have an effect of increasing the specific surface area by removing the uneven portion. Therefore, the multi-hole flat membrane module 100 has an effect of increasing the processing efficiency of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130.

2, the diameters of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 are formed to be the same as each other, and the first multi-hole flat membrane 110 and the second have a same diameter. The multi-hole flat membrane 130 uniformly removes the gap between the uneven parts. In order to increase the processing efficiency of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130, the multi-hole flat membrane module 100 may be formed to have uniform pores on the surface of the multi-pore flat membrane module 100. to be.

Referring to Figure 3 or 4, the water treatment device 10 according to another embodiment of the present invention, the housing 200; A plurality of multi-hole flat membrane modules 100 disposed in the housing 200 and configured to filter the contaminated water in the housings; disposed at both ends of the multi-hole flat membrane modules 100, and inside the housing 200. A water collecting unit 150 inserted into and fixed to the multi-hole flat membrane module 100 to collect the treated water purified by the multi-hole flat membrane module 100 and connected to the water collecting unit 150, on one side or both sides of an outer circumferential surface of the housing 200. It is formed and includes a discharge port 210 for discharging the treated water to the outside.

The housing 200 provides a space in which the multi-hole flat membrane module 100 is disposed. The housing 200 protects the multi-hole flat membrane module 100 from external shocks. A plurality of housings 200 are arranged and fixed to a frame (not shown), and the housing 200 is immersed in contaminated water and installed.

The housing 200 is preferably formed in a rectangular shape for easy installation. This is not intended to limit the shape of the housing 200. The housing 200 is formed by opening the upper and lower parts. Air is introduced into the housing 200 from the bottom. At this time, the housing 200 generates turbulent flow along the outer circumferential surface of the multi-hole flat membrane module 100 to be described later. At this time, the turbulence is formed along the concave-convex shape that is the side of the multi-hole flat membrane module 100. The housing 200 provides a fixing part 250 into which the multi-hole flat membrane module 100 is inserted and fixed.

A plurality of fixing parts 250 may be formed at equal intervals. The fixing part 250 is disposed in pairs on both sides of the housing 200. That is, the fixing parts 250 are disposed in pairs to form and fix the multi-hole flat membrane module 100. The fixing part 250 is fixed to the multi-hole flat membrane module 100 is fitted to each corresponding surface. The fixing part 250 is arranged so that a plurality of slit grooves (not shown) have an uneven shape so that the multi-hole flat membrane module 100 is inserted and fixed. This is not intended to limit the fixing method of the fixing part 250 and the multi-hole flat membrane module 100 to the slide method. The slit groove is arranged to adjust the number of the multi-hole flat membrane module 100 is set by the size of the water treatment device 10 and the filtration throughput.

In addition, the housing 200 may be formed with a fixture in order to prevent the multi-hole flat membrane module 100 is separated by the introduced air. The fixture prevents the detachment of the multi-hole flat membrane module 100. That is, the fixture prevents the multi-hole flat membrane module 100 from being separated upward or downward by hydraulic pressure and air pressure. That is, the fixture fixes the multi-hole flat membrane module 100 and the housing. The fixture is suitably disposed at the top and bottom of the housing 200.

The multi-hole flat membrane module 100 is formed by connecting the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 described above. At this time, the multi-hole flat membrane module 100 is formed on the basis of the form of the second multi-hole flat membrane 130 is disposed on both sides with respect to the first multi-hole flat membrane 110 on the basis of one. The multi-hole flat membrane module 100 has a length to be inserted and fixed in the longitudinal direction of the housing 200 (see FIG. 4). In addition, the multi-hole flat membrane module 100 may be inserted in the transverse or longitudinal direction with respect to the longitudinal direction of the housing 200.

The multi-hole flat membrane module 100 is formed to be disposed inside the housing 200. The multi-hole flat membrane module 100 is disposed in the housing 200 a plurality. The multi-hole flat membrane module 100 separates the contaminated water introduced from the lower portion of the housing 200 by filtering the impurities and the treated water. In the multi-hole flat membrane module 100, the water collecting processing unit 150 is disposed at both ends of the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130.

The water collecting processor 150 connects the treated water purified by the first multi-hole flat membrane 110 and the second multi-pore flat membrane 130 to an outlet 210 to be described later. The water collecting unit 150 has an adhesive formed along the outer circumferential surface of the multi-pore flat membrane module 100. That is, the water collecting unit 150 is fixed to the adhesive of the multi-hole flat membrane module 100.

The water collecting processor 150 also serves to fix the first multi-hole flat membrane 110 and the second multi-hole flat membrane 130 to the housing 200, respectively. The water collecting unit 150 is inserted into the slit groove described above and disposed inside the housing 200. At this time, the water collecting unit 150 is formed by placing a rubber ring to prevent shaking when inserted into the slit groove.

The outlet 210 is formed on the outer peripheral surface of the housing. The outlet 210 is formed on one side or both sides of the outer peripheral surface of the housing 200. The outlet 210 connects the purified treated water to the outside. At this time, the outlet 210 is in communication with the water collecting unit 150 is formed on the outer peripheral surface of the housing 200.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiments are for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various implementations are possible within the scope of the technical idea of the present invention.

[Description of the code]

10: water treatment device 100: multi-pore membrane module.

110: first multi-hole flat membrane 130: second multi-hole flat membrane

150: water collecting unit 200: housing

210: outlet

Claims (9)

A multi-hole flat membrane for water treatment in which a plurality of hollows are formed side by side. Multi-hole flat membrane module with integrated multi-hole flat membrane for water treatment according to claim 1. An upper and lower housing; A plurality of multi-pore membrane modules disposed within the housing and configured to filter the contaminated water within the housing; A collecting unit disposed at both ends of the multi-hole flat membrane module and inserted into and fixed to the housing to collect treated water purified by the multi-hole flat membrane module; And A water outlet connected to the water collecting treatment unit and formed on one or both sides of an outer circumferential surface of the housing and configured to discharge the treated water to the outside. The method according to claim 3, The multi-hole flat membrane module A first multi-hole flat membrane formed in a hollow shape; A second multi-hole flat membrane formed to be continuously disposed in contact with an outer circumferential surface of the first multi-hole flat membrane, And the first multi-hole flat membrane and the second multi-hole flat membrane are formed to repeat sequentially. The method according to claim 4, The water treatment apparatus of claim 1, wherein the diameters of the first multi-pore flat membrane and the second multi-pore flat membrane are equal to each other. The method according to claim 4, The first multi-hole flat membrane and the second multi-hole flat membrane is different in diameter size formed water treatment apparatus. A first multi-hole flat membrane formed in a hollow shape; A second multi-hole flat membrane formed to be continuously disposed in contact with an outer circumferential surface of the first multi-hole flat membrane, The multi-hole flat membrane module formed so that the first multi-hole flat membrane and the second multi-hole flat membrane is repeated in sequence. The method according to claim 7, The multi-hole flat membrane module formed so that the diameter of the first multi-hole flat membrane and the second multi-hole flat membrane are the same. The method according to claim 7, The multi-hole flat membrane module of which the diameters of the first multi-hole flat membrane and the second multi-hole flat membrane are different from each other.

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