KR100841713B1 - Stack type membrane module - Google Patents

Abstract

An improved membrane module is provided to apply the membrane module to sewage or wastewater with a high silt density index and improve the treatment efficiency of the sewage or wastewater. A stack type membrane module(100) comprises: a housing(110); a plurality of spacers(120) which are stacked in the housing, and each of which has a hollow hole formed in a central portion thereof and a plurality of slits formed in an outer face of the hollow hole; membranes(130) which are interposed between the spacers, and each of which has a hollow hole formed in a central portion thereof such that the hollow hole of the membrane communicates with the hollow hole of the spacers; an inflow pipe(150) connected to a lower part of the housing to provide a path for flowing sewage or wastewater into the housing; a collector(140) connected to the lower part of the housing to collect treated water filtered by the membranes in the sewage or wastewater; a treated water discharge pipe(160) connected to the collector to discharge the collected treated water; and a concentrate discharge pipe(170) connected to the spacers to discharge concentrate discharged through the slits. Further, the housing is made of a GRP(glass reinforce plastic).

Description

Stacked membrane module

The present invention relates to a laminated membrane module, and more particularly, to a laminated membrane module which is a separator for purifying wastewater in a wastewater treatment system.

Recently, the problem of water pollution has emerged as a big problem in industry, economy, and society. In such a situation, wastewater treatment technology using a separator is recognized as an alternative to solve the water pollution problem.

Wastewater treatment technology using membrane separation process has been developed in the last 30 years through basic research and commercialization process in Europe, Japan and the United States.

Recently, membranes (membrane), which are actively used in the field of wastewater treatment, replace the existing biological and chemical treatment methods.

Wastewater treatment technology using this membrane separation technology is expected to position the water treatment field as a leading technology in the future because it guarantees excellent treatment efficiency and stable treatment.

The membrane module (membrane module) using the membrane of the membrane used in the conventional wastewater treatment, the membrane (housing), membrane for filtering the wastewater, inlet pipe for supplying the wastewater to the membrane, and filtered by the membrane It includes a treated water discharge pipe for discharging the treated water and the concentrated water discharge pipe is discharged in high concentration without being filtered by the membrane.

The housing is generally made of fiberglass reinforced plastics (FRP) as the envelope surrounding the membrane.

The housing made of glass fiber reinforced plastic has a maximum pressure of 69 bar and an actual working pressure of 55 bar.

The membrane is generally in the form of a rolled up roll with the housing, with the plurality placed on the housing.

The membrane module having the above structure has a problem that many spaces are restricted to be applied to the wastewater having a high silt density index (SDI) of the wastewater due to the narrow space between the membranes.

In addition, when the wastewater is introduced into the membrane module, the greater the inflow pressure, the greater the amount of treated water is filtered out by the membrane and discharged into the treated water discharge pipe.The housing is made of glass fiber reinforced plastic having a maximum pressure of 69 bar and a working pressure of 55 bar. Therefore, there is a problem that the waste water treatment rate by the membrane is low.

The present invention has been made to solve the above problems, and an object thereof is to provide an improved membrane module that can be applied to wastewater having a high chimney concentration coefficient and can also improve the treatment rate of wastewater.

Laminated membrane module of the present invention is a housing, a plurality of stacked in the housing, the hollow is formed in the center, the spacer having a plurality of slits formed on the outer surface of the hollow, interposed between the spacer, A membrane having a hollow formed at a center thereof so as to communicate with the hollow, an inlet pipe coupled to a lower portion of the housing to provide a path for introducing wastewater into the housing, and a treated water coupled to the lower portion of the housing and filtered by the membrane of the wastewater It may include a collector for collecting, a treated water discharge pipe coupled to the collector to discharge the collected treated water and a concentrated water discharge pipe coupled with the spacer to discharge the concentrated water coming out through the slit.

The material of the housing may be glass reinforced plastic (GRP).

The housing made of glass-reinforced plastic may have a working pressure of 75 bar at a maximum pressure of 112.5 bar.

A plurality of concave valleys may be formed on the inner circumferential surfaces of the spacers, and a stepped portion may protrude on an upper surface between the plurality of valleys among the upper surfaces of the inner circumferential surfaces.

An even number of protruding bars protrude from the stepped jaw on one side of the spacer, and an odd number of protruding bars protrude from the stepped jaw of the other side. The back of the other step is formed with grooves equal to the number of protrusion bars of the one step, and the protrusion bars and the grooves may be fitted in a state of being rotated 180 degrees when the spacers are stacked.

Display bars indicating the number of protruding bars on the one side and the other side may protrude on each of one side and the other side of the outer circumferential surface of the spacers.

The slits may provide a path of movement of the waste water, and the concave valleys may provide a path of movement of the treated water filtered by the membrane.

The membranes may be disposed between the stepped portions and the outer circumferential surface of the spacers.

According to the laminated membrane module as described above, by extending the movement path of the filtered wastewater by interposing a plurality of membranes between the spacers in a state where a plurality of spacers are stacked, it can be applied to the filtering of wastewater having a large chimney concentration coefficient. have.

In addition, by making the housing made of glass-reinforced plastic with a high working pressure, it is possible to withstand greater pressure than conventional when introducing waste water into the membrane module, thereby improving the filtering efficiency by the membranes.

Hereinafter, the multilayer membrane module of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a laminated membrane module according to an embodiment of the present invention, Figure 2a is a view showing the spacer top surface of Figure 1, Figure 2b is a view showing the spacer bottom surface of Figure 1, Figure 3 is Figure 1 4 is a view showing the membrane placed on the spacer of Figure 4 is a view showing the membrane of FIG.

1 to 4, the stacked membrane module 100 includes a housing 110, a spacer 120, a membrane 130, a collector 140, an inlet pipe 150, and the like. The treatment water discharge pipe 160 and the concentrated water discharge pipe 170 may be included.

The housing 110 is an exterior material for sealing the membrane 130 to protect it from the outside. The housing 110 may be made of glass reinforced plastics (GRP).

The housing 110 made of glass-reinforced plastic has a maximum pressure of 112.5 bar and a working pressure of 75 bar. According to the glass-reinforced plastic, a pressure of 20 bar or more than that of a housing made of glass fiber-reinforced plastic is known. This can be enhanced.

A plurality of spacers 120 may be stacked in the housing 110 to provide a movement path of the waste water.

The spacer 120 may be provided in various forms. In this embodiment, the spacer 120 may have a circular plate shape.

The spacer 120 may have a hollow 121 formed in a central portion thereof, and a plurality of slits 126 may be formed radially on an outer surface of the hollow 121.

A plurality of valleys 122 may be formed on the inner circumferential surface of the spacer 120 to be concave toward the outer circumferential surface. In the present embodiment, six valleys 122 may be spaced apart from each other by 60 degrees with respect to the midpoint of the spacer 120. .

A step 123 may protrude from an upper surface of the inner circumferential surface, that is, an upper surface perpendicular to the inner circumferential surface between the concave valleys 122 of the inner circumferential surface.

A plurality of protruding bars 124 may protrude on the stepped 123, and an even number of protruding bars 124 may protrude on one side of the stepped 123 based on the center line of the spacer 120. An odd number of protruding bars 124 may protrude from the step 123.

The same number of grooves 128 as the protruding bars 124 of the other step 123 may be formed on the bottom of the one step 123, and the one step 123 on the bottom of the other step 123. The same number of grooves 128 as the protruding bar 124 may be formed.

Therefore, when the spacers 120 are stacked, the protrusion bar 124 and the grooves 128 may be fitted into a defect between the spacer 120 positioned below and the spacer 120 positioned above. have.

The display bars 129 for indicating the stacking direction of the spacers 120 may be protruded by displaying the number of the protruding bars 124 on one side and the other side of the outer circumferential surface of the spacers 120, respectively.

This may allow the protrusion bar 124 and the groove 128 to be fitted by simply fitting the display bar 129 between the spacers 120 to be positioned above and below.

A sealing groove 125 is formed between the stepped portions 123 and the slits 126, and an O-ring 180 is inserted into the sealing groove 125 to concave the slit 126. Can be separated between 122.

The plurality of membranes 130 may be interposed between the spacers 120 in various forms, such as a circle and an octagon, and may be disposed between the step 123 formed on the spacers 120 and the outer circumferential surface of the spacer 120. .

The collector 140 is a place where treated water filtered by the membrane 130 collects, is coupled to a lower portion of the housing 110, and may communicate with a plurality of valleys 122 of the spacer 120.

The inlet pipe 150 may be coupled to a lower portion of the housing 110 to provide a path for introducing external wastewater into the housing 110.

The treated water discharge pipe 160 may be coupled to the collector 140 to discharge the treated water collected by the collector 140 to the outside.

The brine discharge pipe 170 may communicate with the slits 126 of the spacers 120 to discharge the brine from the slits 126 to the outside.

The stacked membrane module 100 having the structure as described above has the wastewater introduced into the housing 110 through the inlet pipe 150 to the top and flows zigzag between the spacers 120 from the top to the bottom. May be filtered by membranes 130 interposed between them.

That is, the treated water filtered while passing through the membranes 130 flows downward through the hollows 131 formed in the membrane 130 and through the plurality of valleys 122 formed on the inner circumferential surface of the spacer 120. Collected in this way, the treated water may be discharged to the outside through the treated water discharge pipe 160.

Meanwhile, the concentrated water that is not filtered through the membranes 130 may flow downward through the slits 126 of the respective spacers 120 and be discharged through the concentrated water discharge pipe 170.

According to the stacked membrane module 100 having the above structure, the membrane module 100 having the stacked structure as a whole by interposing the membranes 130 between the stacked spacers 120 while the spacers 120 are stacked up and down. By providing), it is possible to extend the movement path of the waste water than the conventional roll-type membrane module.

Therefore, there is an advantage that can be applied to the filtering of waste water having a high chimney concentration coefficient.

In addition, by manufacturing the housing 110, which is an exterior material, made of glass-reinforced plastic, it is able to withstand greater pressure than the conventional case when the wastewater flows into the membrane module 100, thereby improving the filtering efficiency by the membranes 130. have.

1 is a view showing a laminated membrane module according to an embodiment of the present invention.

FIG. 2A is a top view of the spacer of FIG. 1. FIG.

FIG. 2B illustrates a bottom surface of the spacer of FIG. 1. FIG.

3 is a view showing a membrane placed on the spacer of FIG.

4 shows the membrane of FIG. 1.

<Description of the symbols for the main parts of the drawings>

100 ... Stacked Membrane Modules 110 ... Housings

120 ... spacer 121,131 ... hollow

122 ... Goals 123 ...

124 ... protrusion bar 125 ... airtight groove

126 ... Slit 127 ... Turn

128 ... Home 130 ... Membrane

140 ... Collector 150 ... Inlet Tube

160 ... treated water outlet 170 ... concentrated water outlet

180 ... O-ring

Claims (9)

housing; A plurality of spacers stacked in the housing, a hollow formed in a central portion thereof, and a plurality of slits formed on an outer surface of the hollow; A membrane interposed between the spacers and having a hollow formed at a center thereof so as to communicate with the hollow of the spacer; An inlet pipe coupled to a lower portion of the housing and providing a path for introducing waste water into the housing; A collector coupled to a lower portion of the housing to collect treated water filtered by the membrane of the waste water; A treatment water discharge pipe coupled to the collector to discharge the collected treatment water; And Laminated membrane module including a concentrated water discharge pipe coupled to the spacer for discharging the concentrated water coming out through the slit. The method of claim 1, Laminated membrane module, characterized in that the material of the housing is glass reinforced plastic (GRP). The method of claim 2, Wherein said housing made of glass reinforced plastic has a working pressure of 75 bar at a maximum pressure of 112.5 bar. The method of claim 1, A plurality of concave valleys are formed on the inner circumferential surfaces of the spacers, and a stepped protrusion is formed on an upper surface between the plurality of valleys among the upper surfaces of the inner circumferential surfaces. The method of claim 4, wherein An even number of protruding bars protrude from the stepped portion on one side with respect to the center line of the spacer, and an odd number of protruding bars protrude from the stepped portion of the other side. The same groove as the number of protrusion bars of the other step is formed on the back of the one step, and the same groove as the number of protrusion bars of the one step is formed on the back of the other step, The membrane module of claim 1, wherein the protrusion bars and the grooves are fitted in a state where the spacers are rotated by 180 degrees. The method of claim 5, Laminated membrane module, characterized in that the display bar for displaying the number of the protruding bar of the one side and the other side protrude on each of the outer peripheral surface one side and the other side. The method of claim 4, wherein Wherein said slits provide a path of movement of said wastewater and said concave valleys provide a path of treatment of filtered water filtered by said membrane. The method of claim 1, And the membranes are disposed between the stepped portions and the outer circumferential surface of the spacers. The method of claim 1, Laminated membrane module, characterized in that the membrane is one of a circular or octagonal form.

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