KR20150079091A - High-Flux Pressured Membrane Module Water-Purifying Apparatus and Water-Purifying Apparatus and the method of inspecting membrane break - Google Patents

Abstract

The present invention relates to a high-flow pressurized membrane module water purification apparatus and a membrane rupture inspection method. More particularly, the invention relates to a high-flow pressurized membrane module water purification apparatus capable of individually inspecting a related high-flow pressurized membrane module water purification apparatus without suspending the entire equipment by forming an air inlet for separately injecting air to a lower header unit in order to perform a membrane rupture inspection and, to a membrane rupture inspection method. The present invention provides the high-flow pressurized membrane module water purification apparatus, the invention comprising: a housing having an inner space; a hollow fiber membrane filtering unit disposed in the inner space and for filtering raw water, which is pressurized and supplied, by pressure difference; an upper header unit coupled to an upper part of the housing and having a first outlet for discharging concentrated water which has not passed though the hollow fiber membrane filtering unit, and a second outlet for discharging production water which has been filtered by passing through the hollow fiber membrane filtering unit; a lower header unit coupled to a lower part of the housing and having an inlet which the raw water is pressurized and supplied to; and at least one air inlet formed on the lower header unit by passing through to supply air to the inner space in order to determine whether the hollow fiber membrane filtering unit is ruptured.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-flow pressurized membrane module water purification apparatus, a water treatment apparatus and a membrane rupture inspection method using the same,

The present invention relates to a high-flow-volume, pressurized membrane module water purification apparatus and a membrane breakage inspection method, and more particularly, to a membrane filtration apparatus and a membrane rupture inspection method which are capable of separately inserting air for membrane rupture inspection into a lower header portion, Pressure membrane module water purification apparatus and a membrane rupture inspection method which can individually inspect the high-flow-volume, pressurized membrane module water purification apparatus in the state of a high flow rate.

Generally, in a device for purifying raw water impregnated with pollutants, a filtration membrane used in a water treatment plant or a wastewater treatment apparatus for separating and filtering pollutants is composed of a microfiltration membrane of 0.1 to 0.5 micron and a microfiltration membrane of 0.001 And ultrafiltration membranes with micropores of ~ 0.1 micron.

It is divided into a plate type flat membrane and a hollow type hollow fiber membrane according to the membrane type and is immersed in the contaminated water tank according to the type of purified water treatment using membrane, And a pressurized membrane module water purifying apparatus which is used to fix and use the pollution source water.

Here, in order to prevent contamination of the membrane at the lower part of the contamination source water storage tank, the air supply air diffusing tube is installed on the water tank of the immersion membrane module, and the hollow fiber membrane is fixed thereon. And can be operated at a low pressure and can be used for raw water of high turbidity. Thus, it is used not only for wastewater treatment but also for water treatment. However, when the membrane is contaminated, It is difficult to process large-volume and high-flow water purification.

On the other hand, the pressurized membrane module water purifier has a hollow hollow fiber membrane inside a cylindrical pressure vessel to pressurize and supply the raw water to the inside of the pressure vessel from the outside, so that it can be operated at a high pressure. It can be.

The field of water treatment using such a pressurized membrane module is widely used not only in water purification devices but also in various fields such as pharmaceutical, semiconductor manufacturing, sewage treatment, and industrial water treatment.

Korean Patent Laid-Open Nos. 2008-005772 and 2006-0019245 disclose a structure in which an outlet for discharging produced water passing through a separation membrane is provided on an upper portion of the body, and a concentrated water is discharged to a lower portion of the body.

However, such a conventional pressurized membrane module water purification device has a problem that the recovery rate of the entire process is lowered because inspection is performed in the state where the entire facility is stopped to check whether the membrane is broken in a state where it is applied to the entire facility.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an air inlet for separately injecting air for membrane breakage inspection in a lower header portion, Which is capable of inspecting a water purification apparatus, and a method for inspecting membrane breakage.

According to an aspect of the present invention, there is provided a portable terminal including: a housing having an inner space; A hollow fiber membrane filter disposed in the inner space for filtering the raw water to be pressurized and supplied by a pressure difference; An upper header portion coupled to an upper side of the housing, the upper header portion having a first outlet for discharging the concentrated water that has not passed through the hollow fiber filtration portion and a second outlet for discharging filtered filtrate through the hollow fiber filter portion; A lower header portion having an inlet through which the raw water is pressurized and to be coupled to a lower side of the housing; And at least one air inlet formed in the lower header portion to supply air to the inner space side to check whether the hollow fiber membrane filtration unit is broken.

Preferably, a stopper for sealing the air inlet may be detachably coupled.

Preferably, the stopper may be screwed with the air inlet.

Preferably, the stopper comprises a small diameter portion having a relatively small diameter and a large diameter portion having a larger diameter than the small diameter portion, and the air inlet may have a step corresponding to the small diameter portion and the large diameter portion.

Preferably, a hermetic member may be additionally provided between the air inlet and the cap.

In addition, the present invention provides a water treatment apparatus in which a plurality of high-flow-rate, pressurized membrane module water purification apparatuses are provided and connected to a supply pipe connected to a raw water tank in parallel with each other.

Furthermore, the present invention provides a method for inspecting whether or not a membrane is broken by selecting any one of a plurality of high-flow-rate, pressurized membrane module water purification apparatuses installed in a water treatment apparatus, Operating the valve provided on the front side of the pressurized membrane module water purification apparatus to block the inflow of raw water into the internal space side; And a step of separating a cap from the air inlet and supplying air for film breakage inspection to the air inlet side to check whether the hollow fiber membrane filtration part is broken or not. do.

Preferably, the air inlet may be sealed when the stopper is coupled during normal operation of the water treatment apparatus.

Preferably, the high flow rate pressurized membrane module water purification device excluding the high flow rate pressurized membrane module water purifier selected from among the plurality of high flow rate pressurized membrane module water purifying devices can be maintained in a normal operating state.

According to the present invention, it is possible to individually inspect the high-flow-rate, pressurized membrane module water purification apparatus without stopping the entire facility by forming an air inlet for separately injecting air for membrane breakage inspection into the lower header portion And the recovery rate of the entire process can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of a high flow pressurized water purification apparatus according to a preferred embodiment of the present invention. FIG.
Figure 2 is an exploded perspective view of Figure 1;
3 is a cross-sectional view showing the flow of production water in a high flow rate pressurized water purification apparatus according to the first embodiment of the present invention.
4 is a cross-sectional view showing an air supply / discharge flow in a membrane rupture inspection in a high-flow pressure water purification apparatus according to the first embodiment of the present invention.
5 is a cross-sectional view of a high-flow-pressure water purification apparatus according to a second embodiment of the present invention.
FIG. 6 is a schematic view showing a water treatment apparatus to which a high-flow-pressure, water purification apparatus according to a preferred embodiment of the present invention is applied.
7 is a conceptual view showing a state in which film breakage inspection is performed in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding of the present invention, the same reference numerals will be used to denote the same constituent elements even if they are shown in different drawings.

1 to 5, the high-flow-volume, pressurized membrane module purification apparatus 100, 100 'according to a preferred embodiment of the present invention includes a housing 110, a hollow fiber membrane filtration unit 120, an upper header unit 130, A lower header portion 140, and air inlets 150 and 150 '.

The housing 110 may include a hollow cylindrical member having an inner space having a predetermined size to allow the hollow fiber membrane filtration unit 120 to be disposed therein and having open upper and lower portions.

The housing 110 may have a hollow cylindrical member or a rectangular cross-section.

The hollow fiber membrane filtration unit 120 filters raw water such as wastewater, which is disposed in the inner space of the housing 110 and is supplied to the inside of the housing 110, according to a pressure difference to remove foreign matters contained in the raw water Filtration means.

The hollow fiber membrane filtration unit 120 is formed by bundling the hollow fiber membranes 122 so that the hollow fibers of the hollow tubes having the hollow center can increase the membrane area ratio per unit area.

The hollow fiber membrane filtration unit 120 is fixed to the upper and lower ends of the housing 110 via a bonding means 124 such as urethane or silicone. The interface between the hollow fiber membrane filtration unit 120 and the hollow fiber membrane filtration unit 120 is sealed, (120) is firmly fixed to the inside of the housing (110), and the raw water supplied into the housing is prevented from flowing out to the unnecessary area.

Here, the hollow fiber membrane filtration unit 120 has an opening corresponding to the upper header unit 130 so as to discharge the produced water through the second outlet 134 provided in the upper header unit 130 And the lower portion of the hollow fiber membrane filtration unit 120 corresponding to the lower header unit 140 is also formed to open to allow the raw water to flow through the inflow ports 142 and 144 provided in the lower header unit 140.

The upper header part 130 is coupled to the upper end of the housing 110 and includes the contaminant filtered without passing through the hollow fiber membrane filtration part 120 of the raw water supplied into the housing 110 A first outlet 132 through which the concentrated water is discharged and a second outlet 134 through which filtered water produced in the raw water having passed through the hollow fiber membrane filtration unit 120 is discharged.

The upper header part 130 includes an upper header 131 having the first outlet 132 and a second outlet 134 having the second outlet 134 to cover the open top of the upper header 131. And a cap 136.

Here, the upper header 131 has a male thread portion formed on an upper outer circumferential surface thereof, and the upper cap 136 is formed to have a female screw portion on a lower end inner circumferential surface thereof to be assembled to each other in a threaded manner. However, Or may be assembled in other bonding schemes such as fusion bonding.

An upper space is formed between the hollow fiber membrane filtration unit 120 and the second discharge port 134. The upper space is filled with the produced water after being filtered through the hollow fiber membrane filtration unit 120, The inlet of the second outlet 134 and the upper end of the hollow fiber filtration unit 120 are spaced apart from each other.

Accordingly, the second discharge port 134 can be installed in an arbitrary area corresponding to the upper space filled with the production water, and is connected to a production water discharge line (not shown) for discharging the production water.

The upper header 131 may include an upper rectifier 170a interposed between the inner surface of the upper header 131 and the upper outer surface of the hollow fiber filtration unit 120. The upper rectifying cylinder 170a is formed with a plurality of slits 174 through the upper and lower bodies 172.

The lower header part 140 is provided with inlet ports 142 and 144 through which raw water, which is an object to be treated, is supplied from the outside. The lower header part 140 includes a lower header 141 coupled to the lower side of the housing 110 and an inlet 142 and 144 through which the raw water is supplied so as to cover the opened lower part of the lower header 141. [ And a lower cap 146,

Although the inlet 142 and the inlet 144 are provided in the lower cap 146, the lower inlet 141 and the lower inlet 142 are provided in the lower header 141 and the second inlet 142 and 144, respectively. The raw water may be supplied to the inside of the housing 110 through the opening.

Although the lower header 141 is shown to have a male screw portion on the lower outer circumferential surface and the lower cap 146 has a female screw portion on the inner circumferential surface on the lower end and is screwed to each other, Or may be assembled by other bonding methods such as welding.

A lower rectifier 170b may be inserted into the lower header 141 between the inner surface of the lower header 141 and the outer surface of the hollow fiber membrane filter 120. The lower rectifier 170b has a plurality of slits 174 formed in the upper and lower openings of the body 172.

Between the lower side of the hollow fiber membrane filtration unit 120 and the inner surface of the lower cap 146, a lower space filled with raw water supplied through the inlets 142 and 144 can be formed.

3 and 5, the raw water pressurized and supplied to the inside of the housing 110 through the inlet ports 142 and 144 passes through the hollow fiber membrane 122, and the filtered production water passes through the hollow fiber membrane 122 and is discharged to the outside through a second outlet 134 formed in the upper cap 136 of the upper header portion 130. [

At this time, since the inlets 142 and 144 provided in the lower header 141 are closed, the produced water is not discharged to the outside, and the concentrated water, which has not passed through the hollow fiber membrane filtration unit 120, And is discharged to the outside through the discharge port 132.

Although the lower header 141 and the lower cap 146 are separately shown and described in connection with the drawings and the description, the present invention is not limited thereto. The lower cap 141 may be integrally provided on the lower side of the lower header .

2 to 5, at least one air inlet 150, 150 'formed through the lower cap 146 is provided in the high-flow-volume, pressurized membrane module purification apparatus 100, 100' according to the present invention .

The air inlet 150 or 150 'is a passage for supplying air for checking the breakage of the hollow fiber membrane 122 in the hollow fiber membrane filtration unit 120 disposed in the inner space of the housing 110. The air inlets 150 and 150 'are sealed through separate plugs 160 and 160' and the plugs 160 and 160 'are separated from the air inlets 150 and 150' So that it can be injected.

A separate airtight member 164 is additionally provided between the plugs 160 and 160 'and the air inlet 150 and 150' so that the raw water supplied into the interior of the housing 110 through the inlets 142 and 144 flows into the air inlet 150, 150 'to prevent leakage to the outside. As shown in FIG. 5, the air inlet 150 'and the cap 160' have a relatively small diameter portion 161 and a large diameter portion 162 having a diameter larger than that of the small diameter portion 161 162 are formed so that the stopper 160 'is fastened to the air inlet 150', a stepped structure is formed in the boundary region between the small diameter portion 161 and the large diameter portion 162, .

Here, the plugs 160 and 160 'may be screwed to each other by forming a threaded portion on the outer circumferential surface and corresponding to the air inlet 150 and 150', or may be fastened by various methods such as simple indentation or interference fit. .

Accordingly, the high-flow-rate, pressurized membrane module water purification apparatus 100, 100 'can supply the separate inspection air through the air inlet 150, 150', so that it is necessary to check whether the membrane is broken during use It is possible to individually inspect only the high-flow-rate, pressurized membrane module water purification apparatus 100, 100 'without stopping the operation of the entire system. This has the advantage that the recovery rate of the entire process can be increased.

Here, the inspection air may be supplied to the air inlet 150 or 150 'through a separate pipe connected to the air pump, but may be injected using a portable air kit.

6 and 7, a plurality of high-flow-volume, pressurized membrane module purification apparatuses 100 and 100 'according to the present invention are provided with a plurality of high-flow- The devices 100 and 100 'are connected in parallel with each other. At this time, on the front side of the plurality of high flow rate pressurized membrane module water purification apparatuses 100 and 100 ', separate valves 220 for allowing or blocking the supply of raw water to the respective high flow rate pressurized membrane module water purification apparatuses 100 and 100' And the stoppers 160 and 160 'are fastened to the air inlets 150 and 150', respectively, to prevent the raw water from leaking to the outside.

If the water treatment operation is performed for a long time in a state where a plurality of high flow rate pressurized membrane module water purification apparatuses 100, 100 'are connected in parallel to each other, there is a case where the hollow fiber membrane 122 is broken due to defective product itself or prolonged use do.

Accordingly, when it is desired to check the high-flow-rate, pressurized membrane module water purification apparatus 100, 100 'in which a problem has occurred among the plurality of high flow rate pressurized membrane module purification apparatuses 100, 100' installed in the water purification apparatus 200, The processing apparatus 200 checks whether the membrane is broken through the following process.

First, a valve (220) provided in front of one high flow rate pressurized membrane module water purifier (100, 100 ') to be confirmed among a plurality of high flow rate pressurized membrane module water purifying apparatuses (100, 100' The supply of raw water to the module water purification apparatuses 100 and 100 'is stopped. At this time, the rest of the high-flow rate pressurized membrane module water purification apparatuses 100 and 100 'continue to operate normally by supplying raw water continuously from the raw water tank 210 (see FIG. 7).

Thereafter, the upper cap 136 of the high-flow-rate, pressurized membrane module purification apparatus 100, 100 'is separated from the housing 110, the caps 160, 160' coupled to the air inlets 150, 150 ' And the inspection air is supplied to the injection ports 150 and 150 '. Accordingly, when the hollow fiber membrane 122 is broken in the hollow fiber membrane filtration unit 120 disposed inside the housing 110, bubbles are generated by the air supplied through the air inlets 150 and 150 ' , The operator can easily confirm whether or not the hollow fiber membrane 122 built in the high-flow-rate, pressurized membrane module cleaning apparatus 100, 100 'is broken by checking whether bubbles are generated through the upper side of the opened housing 110 (See Fig. 4)

As described above, according to the high flow rate pressurized membrane module purification apparatuses 100 and 100 'according to the present invention, it is not necessary to interrupt a plurality of high flow rate pressurized membrane module purification apparatuses 100 and 100' installed in the water purification apparatus 200 collectively, Individual tests can be performed through the injection ports 150 and 150 ', thereby increasing the overall recovery rate.

While the foregoing is a more detailed description with reference to the drawings in connection with specific embodiments of the invention, the invention is not limited to such specific structures. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be expressly understood, however, that equivalents, modifications and substitutions through such simple design variations or modifications are expressly included within the scope of the present invention.

100,100 ': High flow pressure type membrane module water purification device
110: housing 120: hollow fiber membrane filtration unit
122: hollow fiber membrane 124: adhesive means
130: upper header part 131: upper header
132: first outlet 134: second outlet
136: upper cap 140: lower header portion
141: lower header 142: first inlet
144: second inlet 146: bottom cap
150, 150 ': Air inlet 160, 160': Plug
161: Small diameter part 162: Large diameter part
164: hermetic member 170a, 170b: upper and lower rectifying tubes
172: body 174: slit
200: water treatment apparatus 210: raw water tank
220: Valve

Claims (9)

A housing having an inner space;
A hollow fiber membrane filter disposed in the inner space for filtering the raw water to be pressurized and supplied by a pressure difference;
An upper header portion coupled to an upper side of the housing, the upper header portion having a first outlet for discharging the concentrated water that has not passed through the hollow fiber filtration portion and a second outlet for discharging filtered filtrate through the hollow fiber filter portion;
A lower header portion having an inlet through which the raw water is pressurized and to be coupled to a lower side of the housing; And
And at least one air inlet formed in the lower header portion so as to supply air to the inner space side to check whether the hollow fiber membrane filtration portion is broken. The method according to claim 1,
And a cap for sealing the air inlet is detachably coupled. 3. The method of claim 2,
Wherein the cap is screwed with the air inlet. 3. The method of claim 2,
Characterized in that the cap comprises a small diameter portion having a relatively small diameter and a large diameter portion having a diameter larger than that of the small diameter portion and the air inlet has a step so as to correspond to the small diameter portion and the large diameter portion, Module water purification equipment. 3. The method of claim 2,
And a hermetic member is additionally provided between the air inlet and the cap. The water treatment apparatus according to any one of claims 1 to 5, wherein a plurality of high-flow-volume, pressurized membrane module purification apparatuses are connected in parallel to a supply pipe connected to the raw water tank. A method for inspecting whether or not a membrane is broken by individually selecting any one of a plurality of high flow rate pressurized membrane module purification apparatuses in the water treatment apparatus of claim 6,
Operating a valve provided on a front side of a high flow rate pressurized membrane module water purification apparatus selected from among a plurality of high flow rate pressurized membrane module purification apparatuses to block the inflow of raw water into the internal space side; And
Separating the cap from the air inlet, and supplying air for membrane breakage inspection to the air inlet port side to check whether the hollow fiber membrane filtration unit is broken or not. 8. The method of claim 7,
Wherein the air inlet is sealed when the water purifier is operated while the water purifier is operating normally. 8. The method of claim 7,
Wherein the high-flow-rate, pressurized-type membrane module water purification device excluding the high-flow-rate, pressurized-membrane module water purification device selected from the plurality of high flow rate pressurized membrane module water purification devices is maintained in a normal operating state. Way.

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