KR101524078B1 - Floating mambrane and filterling method using the same - Google Patents

Abstract

The present invention relates to a membrane to be arranged for reliable treatment of source water such as sewage, contaminated water, and digestion waste water and a filtering method using the membrane, and more specifically, to a floating membrane having buoyant elevation box and a filtering method using the same, wherein: materials existing in source water for treatment (organic/inorganic materials, microorganisms, etc.) can be separated and removed completely through the membrane; if the water level changes due to an intermittent filtering process, a floating elevation box using buoyant force is employed to regulate the height of the membrane to reduce error in filtering source water for more complete filtration; and a floating elevation box can eliminates inconvenience associated with operation of mechanical devices designed to regulate the height of the membrane.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a flotation membrane having a buoyant ascending / descending box and a filtration process using the flotation membrane. [0002] FLOATING MAMBRANE AND FILTERING METHOD USING THE SAME [0003]

The present invention relates to a membrane provided for stably treating raw water to be treated such as sewage, wastewater, and digested waste water, and a filtration method using the membrane. More particularly, the present invention relates to a membrane, And microorganisms) can be completely separated and removed through the membrane. When the water level in the filtration tank is changed by the intermittent filtration process, the height of the membrane is controlled through the buoyancy rising / falling box using the buoyancy, The present invention relates to a flotation membrane having a buoyancy ascending / descending box which can reduce errors and can perfectly filter a flue gas, and can solve the inconvenience of using a mechanical device for controlling the height of a membrane, and a filtration method using the flotation membrane.

As a filtration device generally used for purifying raw water, there is a patent No. 10-0749303 entitled " Inertial intake device for filtration water purification system "

In the prior art, the upper tube connected with the first unit is connected to the lower tube having the second unit, and the upper tube and the lower tube are positioned above the fixed tube connected to the pump, The lower inlet portion is formed between the lower tube and the fixed tube so that the lower inlet of the upper tube formed at the upper opening of the upper tube at the time of driving the pump and the upward force of the water introduced through the lower inlet of the upper tube, And an air pipe for supplying air in the air to the pump is formed in the center of the fixed pipe so that the upper pipe and the lower pipe can be quickly returned to the original position And the water in the water tank and the water in the middle layer are sucked and supplied to the filtration water purification system, Querying and filtering, and is an integer such that enables presenting a filtering unit for retrieving knowledge purification system device.

However, the above-mentioned prior art is configured to suck water in the water surface portion of the water tank and the water in the middle layer and to maintain the upper inlet in a state of being slightly submerged on the water surface due to the lowering force and the upward force of the water. There is a problem in that the buoyancy can not be formed and the water receiving apparatus can not be positioned on the water surface constantly.

In addition, there is a prior art No. 10-1312672 entitled "Vertical Reactor and Wastewater Treatment Apparatus with Buoyant Decanter"

The prior art has a horizontal type structure, and has a flow rate adjusting tank for storing and managing the input wastewater, a reaction tank for purifying the flue water introduced from the flow rate adjusting tank through a biological treatment, A decanter for draining only the purified water in a state of being cleaned, and a waste water transfer line having one end disposed on the bottom of the flow rate adjusting tank and the other end disposed on the bottom of the reaction tank, and a vertical reaction tank and a buoyancy decanter The wastewater treatment system consists of a vertical type reaction tank and a buoyancy type decanter, which can maintain stable deep water depth at minimum site by using a vertical reaction tank and a buoyancy type decanter. I am suggesting.

However, in the conventional technique, the height is automatically adjusted using buoyancy according to the water level in order to efficiently drain only the biologically treated water level, or the buoyancy is formed by using the conventional method to adjust the water level, There is a problem that the adjustment can not be made accurately.

Further, another prior art is the "Patented Buoyancy Device for Filtration Purifier" of Patent No. 10-1085296,

The prior art includes a water suction funnel for forming at least one water suction hole on the upper circumference and for assembling a connection pipe to be inserted into the water suction pipe of the lower part and a water suction funnel for assembling at least one side of the water suction funnel, And an assembly having at least one or more assembly holes on the side of the water suction funnel are integrally formed and a cylindrical air bubble is inserted into the assembly hole of the assembly frame and a fixing pipe inserted and supported in a water supply pipe for supplying water sucked by the pump to the filtration water purifier is inserted Therefore, it is possible to improve the buoyancy function by constructing the air bubbles to be opposed to each other on the both sides, adjusting the horizontal position by adjusting the vertical position of the air bubbles, and water suction Prefabricated for filtration water purifier to maximize use reliability by easy adjustment of hole position Buoyancy devices are presented.

However, in the related art, the position of the water suction hole is adjusted by forming the buoyancy using air bubbles at different assembling positions of the air bubbles, and by repeatedly assembling and disassembling the air bubbles when adjusting the position of the water suction holes , It is inconvenient to use, and the filtration water purifier must be taken out from the inside of the water storage tank for assembly and disassembly.

In addition, another conventional technique is disclosed in Korean Patent No. 10-0874268 entitled " Suction Part of Water Tank Purifier Using Buoyancy "

In the prior art, a horizontal buoyancy member symmetrically formed so as to balance and maintain the buoyancy so that the buoyant force is absorbed at the upper end of the buoyancy, Wherein the horizontal buoyancy member is divided into two or more symmetrical parts, and the upper part of the suction control tube has a filter member for preventing foreign matter from being sucked into the upper part of the suction control tube, And an auxiliary buoyancy member for enhancing buoyancy is installed on the outer circumferential surface of the suction control tube to move the buoyant force according to the water level of the water in the water tank to suck up the water film of the water surface, Not only can the water in the water tank be activated, And a suction unit of a water tank purification apparatus using buoyancy which has an effect of keeping the vegetation environment and freshness of various fishery products and the like managed in the water tank at the highest level.

However, in the conventional technique, the position of the suction control tube in the water is adjusted by adjusting the area and size of the auxiliary buffer member and the horizontal buoyancy member, and the buoyancy member is separately provided depending on the position of the water tank or the suction control pipe, There is a problem that the buoyancy control is cumbersome and that separate parts are provided separately.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above problems, and it is an object of the present invention to provide a membrane module for filtering raw water provided in a filtration tank and a buoyancy ascending / descending box for moving the membrane module up and down, Thereby facilitating filtration of raw water,

The fluid is supplied to the buoyancy ascending / descending box, and the fluid is composed of a rising fluid made of a gas for improving the buoyancy of the lifting / lowering box and a descending fluid made of a liquid for reducing buoyancy, It is an object of the present invention to provide an adjustable floating membrane.

The present invention also provides a water level monitoring means in the ascending / descending box so that the membrane module can be accurately positioned by accurately measuring the water level.

Further, the water level monitoring means includes a housing and a water level monitoring sensor, and the housing further includes a position adjusting means, so that the water level monitoring means can be accurately fixed in the water tank, thereby facilitating the measurement of the water level.

The present invention also relates to a method for controlling a flotation membrane, comprising the steps of charging raw water into a filtration tank, filtering the raw water by using a flotation membrane, and regulating the position of the flotation membrane, And the position of the floating membrane can be easily adjusted according to the position of the floating membrane.

In order to achieve the above object, a flotation membrane having a buoyancy ascending / descending box according to the present invention comprises:

A membrane module provided in the filtration tank for filtering the raw water;

And a buoyancy regulating unit provided in the membrane module and including a reservoir and a fluid valve provided in the reservoir to supply and discharge the fluid,

Wherein the fluid comprises a rising fluid for raising the raising / lowering box and a raising fluid for lowering the raising / lowering box,

Wherein the rising fluid is made of a gas and the falling fluid is made of a liquid,

In the ascending / descending box

And a water level monitoring means for measuring the water level of the filtration tank.

Also, the filtration process using the floating membrane according to the present invention

A feeding step of feeding raw water into a filtration tank;

A filtration step of filtering the raw water supplied to the charging step using a floating membrane; And

And adjusting a height of the floating membrane through a buoyancy ascending / descending box provided in the floating membrane in the filtration step,

The up / down box

And a fluid valve provided in the reservoir for fluid input and output.

As described above, the floating membrane according to the present invention is provided with a membrane module for filtering raw water in a filtration tank to purify microorganisms and foreign substances mixed in raw water,

And a buoyancy ascending / descending box for allowing the membrane module to be positioned below the water surface. By providing the water level monitoring means in the ascending / descending box, the water level is measured according to the intermittent water level change, By keeping the position of the membrane module constant, the raw water can be efficiently filtered,

And a lifting valve and a down valve for injecting or discharging a rising fluid for lowering the buoyancy of the storage part and a lowering fluid for lowering the fluid. The buoyant force of the storage part is adjusted to position the membrane module in the filtration tank However,

The up / down box is further provided with a compressor for supplying a rising fluid, and the buoyancy of the lifting / lowering box can be easily adjusted by injecting and discharging the upward fluid using the operation of the up / down valve and the compressor.

Fig. 1 is a step diagram of a filtration process according to the present invention
2 is a schematic view of a floating membrane according to the present invention
FIGS. 3 and 4 illustrate an embodiment of a floating membrane according to the present invention
5 is a modification example of the water level monitoring means according to the present invention according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The flotation membrane having the buoyancy ascending / descending box 20 according to the present invention includes a membrane module 10 provided in the filtration tank P1 and a buoyancy ascending / descending box 20 provided in the membrane module 10 .

More specifically, the present invention treats aquatic pollutants generated from raw water to be treated such as sewage, sewage, and digested waste water in a single filtration tank (P1) using a membrane.

And more particularly to a technique for producing final treated water through a submerged membrane module (10) of a membrane module (10), and more particularly to a technique for removing organic substances present in sewage, This is a technique for more stably treating the concentrations of organic substances and nutrients in the final treated water through the complete removal of the particulate matter by using the membrane module 10 to stably remove salts, such as nitrogen and phosphorus.

2 to 4, the floating membrane according to the present invention is provided in the filtration tank P1 and comprises a membrane module 10 for filtering raw water. The membrane module 10 is a water treatment filtration method using a separation membrane. In some cases, the membrane module 10 needs to draw raw water under a certain distance from the water surface during operation of the filtration process. The height of the raw water changes intermittently There is a problem that a certain distance can not be maintained. In order to solve this problem, the present invention further includes a buoyancy ascending / descending box 20 for regulating the position of the membrane module 10. The buoyancy ascending / descending box 20 includes a storage unit 21, And a buoyancy regulating unit formed of a fluid valve 23 provided in the storage unit 21 to supply and discharge the fluid 25.

More specifically, the membrane module 10 is provided with a buoyancy chamber (not shown) provided with a reservoir 21 therein for maintaining a position for drawing raw water below a predetermined distance from the water surface in the filtration tank P1, A rising / falling box 20 is further provided.

More specifically, the buoyancy ascending / descending box 20 is provided with a storage unit 21 therein, and a fluid 25 for controlling the buoyancy is supplied to the storage unit 21, And a fluid valve (23) for discharging the fluid. The fluid valve (23) is a solenoid valve. The fluid 25 further includes a rising fluid 251 for raising the buoyant force of the reservoir portion 21 to raise the buoyancy ascending / descending box 20, And a lowering fluid 253 for lowering the fluid. The fluid valve 23 further includes a lift valve 231 for regulating the discharge of the ascending fluid 251 and a descending valve 233 for regulating the supply and discharge of the descending fluid 253.

2, the lifting / lowering box 20 may be provided on one side of the membrane module 10 or on both sides of the membrane module 10, which may be provided on both sides of the membrane module 10 depending on the size of the filtration tank P1. It is possible to use selectively by the user by the scale.

The ascending and descending box 20 is further provided with a compressor 29. The amount of the ascending fluid 251 is adjusted to the storage unit 21 through the compressor 29, So that the buoyant force in the valve body 21 can be adjusted.

The lifting fluid 251 and the lowering fluid 253 are supplied to and discharged from the storage part 21 of the buoyancy ascending / descending box 20 provided in the floating type membrane according to the present invention, thereby controlling the buoyancy of the storing part 21 The rising fluid 251 is made of a gas such as helium or oxygen, and the falling fluid 253 is made of a liquid such as water. 3, when the buoyancy ascending / descending box 20 is to be raised, the ascending valve 231 is closed and the ascending fluid 251 is introduced through the compressor 29, Buoyancy is generated in the water by filling up with the rising fluid 251 made of gas in the part 21, so that the buoyancy ascending / descending box 20 is raised and the membrane module 10 is raised accordingly. 4, the lift valve 231 is opened to discharge the lift fluid 251 stored in the storage part 21, and the lift valve 233 is opened to store the dropping fluid 253 The buoyant force of the reservoir 21 is reduced and the buoyancy ascending / descending box 20 is lowered. As a result, the membrane module 10 is lowered.

Further, since the buoyancy ascending / descending box 20 is provided in the filtration tank P1, the descending fluid 253 can be used as raw water in the filtration tank P1, and the descending valve 233 can be opened, The buoyant force of the storage unit 21 can be adjusted by adjusting the supply of the rising fluid 251 only when the raw water is inputted into the storage unit 21.

The water level monitoring means 27 further includes a water level monitoring means 27 for measuring the water level of the filtration tank P1 in the ascending and descending box 20. More specifically, To measure the distance to the water surface. Therefore, it is possible to accurately measure the distance to the water surface through the water level monitoring means 27 and maintain a certain distance from the surface of the membrane module 10.

5 shows a modification of the water level monitoring means 27 provided in the ascending / descending box 20. The water level monitoring means provided in the ascending and descending box 20 is open at one side or both sides, And a water level monitoring sensor arranged on the mounting portion.

The water level monitoring means B1 includes a housing Bf having a water level monitoring sensor M incorporated therein, a mesh type cover Bc covering the opening of the housing, And a joining member Au (A l).

One or a plurality of coupling members may be provided depending on the size of the reactor B1, and the coupling members are composed of two upper and lower coupling members Au.

Each coupling member Au is configured to be adjustable in length and angle so that it can be applied to all of the various filtration tank P1 structures. Even if the installation filtration tank P1 forms a curved surface as shown in FIG. 5, .

Each of the engaging members Au is connected to a first link A1 connected to the filtration tank P1, a second link A2 for adjusting the length and angle, a third link A3 coupled to the housing Bf, And a plurality of holes for adjusting the length are formed in each of the links A1, A2, and A3.

The length of the second link A2 is adjusted in a state of being inserted into the first and third links A1 and A3, and the length and the angle adjustment state are fixed by the long bolt Ab.

Further, in order to further support the load of the reactor B1 when the load is increased, a supporting auxiliary arm Aa is further provided under the housing Bf.

The auxiliary arm Aa is composed of a bolt Aa1 rotatably arranged on a lower supporting surface and a nut Aa2 provided on a lower portion of the housing Bf so that the coupling position with respect to the nut It is possible to support the reactor B1 in a changed and taut state.

Next, the ease of detachment of the cover (Bc) is ensured for the convenience of loading and replacement of the level monitoring sensor (M), and structural improvement to prevent the operator from being hurt by the fall of the cover (Bc) need.

To this end, the housing Bf is formed with a first latching portion Bf1 inside the upper portion and a second latching portion bf2 outside the upper portion in a stepped fashion.

The cover Bc has an upper first protrusion Bc1 and a lower second protrusion Bc2 coupled to the first or second latching portions Bf1 and Bf2.

A hook H fixed to the housing support H4 by the shaft pin Hs is provided in the lower part of the housing Bf in such a manner as to be elastically supported by a spring, particularly a torsion coil spring H5.

The hook H is pressed by the second projection Bc2 of the cover Bc so that the torsion coil spring H5 is deformed to rise upward

And has first and second inclined stopping hooks H1 and H2 formed continuously.

When the cover Bc is engaged, the upper first protrusion Bc1 of the cover Bc is engaged with the upper inner first latching portion Bf1 of the housing Bf

When the lower second projection Bc2 of the cover Bc is pushed toward the housing,

The second projection Bc2 passes the second inclined stopping hook H2 of the hook H to deform the torsion coil spring H5 so that the hook H rotates upward about the axis pin Hs,

The second projection Bc2 passes to the first inclined stopping hook H1 of the hook H and then the pressing force due to the second projection is released

The hook H is rotated downward about the axis pin Hs by the elasticity of the torsion coil spring H5

The second projection Bc2 and the first inclined stopping hook H1 are staggered

The engagement of the cover Bc and the housing Bf is completed and the cover is prevented from being released.

When the cover Bc is opened for replacement or repair of the level monitoring sensor M

The cover Bc is lifted as a whole (for this purpose, it is preferable that the cover is provided with a suitable handle)

The second protrusion Bc2 and the first inclined stopping hook H1 are pressed so that the torsion coil spring H5 is deformed and the hook H rotates upward about the axis pin Hs.

The upper first protrusion Bc1 of the cover Bc is released from the state of being caught by the upper inner first latching portion Bf1 of the housing Bf

The first projection Bc1 of the cover Bc is caught by the upper outer second latching portion Bf2 of the housing Bf.

In this state, the second projection Bc2 of the cover Bc is located at the second inclined stopping hook H2 of the hook H, and thus the second projection Bc2 of the cover Bc is rotated about the axial pin Hs by the elasticity of the torsion coil spring H5 The second projection Bc2 and the second inclined stopping hook H2 are in a staggered state.

At this time, the operator lifts the hook H by hand and releases the restraint of the second projection Bc2 by the second inclined stopping hook H2.

The cover Bc can lift the upper first protrusion Bc1 in a state in which the upper first protrusion Bc1 extends over the upper inner first latching portion Bf1 of the housing Bf and completely separate the cover from the housing if necessary,

Depending on the number of workers or the situation of the site, repair or replacement work can be carried out in an appropriate condition.

1, the present invention is a filtration method (P) using the membrane as described above. The filtration method P comprises the steps of: inputting raw water into the filtration tank P1 to filter raw water;

The raw water supplied from the charging step 100 is filtered through the flotation membrane A provided in the filtration tank P1 and the filtration is performed at a water level intermittently generated in the filtration step 200 The position of the flotation membrane A is adjusted through the buoyancy ascending / descending box 20 provided in the flotation membrane A of the filtration step 200 to adjust the position of the flotation membrane A, (A) capable of being spaced apart from the water surface by a predetermined distance in response to a change in water level generated intermittently in the process of filtering the raw water, which is provided in the filtration tank (P1) The filtration treatment method (P) enables the raw water to be filtered accurately and constantly.

Therefore, in order to remove organic substances present in sewage, sewage and wastewater and to remove nitrogen and phosphorus, which are nutrients, through the filtration process method (P) equipped with the flotation membrane (A) It is preferable that the concentration of the organic matter and the nutrients of the final treated water can be more stably treated through the complete removal of the particulate matter by using the treatment liquid 10.

While the invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Modifications, alterations, and substitutions are possible, and such modifications, alterations, and substitutions are to be construed as being included within the scope of the present invention.

A: Membrane 10: Membrane module
20: ascending / descending box 21:
23: fluid valve 231: lift valve
233: descent valve 25: fluid
251: rising fluid 253: falling fluid
27: Water level monitoring means 29: Compressor
P: filtration treatment method P1: filtration tank
100: input step 200: filtration step
300: Position adjustment step

Claims (10)

A membrane module (A) provided in the filtration tank (P1) for filtering the raw water;
And a buoyancy regulating portion provided in the membrane module (A) and including a reservoir portion (21) and a fluid valve (23) provided in the reservoir portion (21) And a box (20)
The fluid 25 is composed of a rising fluid 251 for raising the raising and lowering box 20 and a raising fluid 253 for lowering the raising and lowering box 20,
The rising fluid 251 is made of a gas, the falling fluid 253 is made of a liquid,
In the ascending / descending box 20,
And a water level monitoring means (27) for measuring the water level of the filtration tank (P1)

The water level monitoring means (27)
A housing Bf in which the water level monitoring sensor M is incorporated and a cover Bc covering the housing Bf and a coupling member Au fixing the housing Bf to the filtration tank P1 Lt; / RTI >
A first latching portion Bf1 is formed on the upper side of the housing Bf and a second latching portion Bf2 is formed on the upper side of the housing Bf,
Wherein the cover Bc is provided with an upper first protrusion Bc1 and a lower second protrusion Bc2 coupled to the first or second latching portion Bf1 or Bf2. The method according to claim 1,
The fluid valve (23) of the ascending / descending box (20)
And a lowering valve (233) for injecting or discharging a lowering fluid (253) for lowering the buoyancy, characterized by comprising a lifting valve (231) for discharging the lifting fluid (251) Membrane. 3. The method of claim 2,
Further comprising a compressor (29) for injecting a rising fluid (251) into the rising / falling box (20). The method of claim 3,
The coupling member Au (A l)
A first link A1 coupled to the filtration tank P1 and a second link A2 for length and angle adjustment and a second link A2 coupled to the first link A1, And a third link (A3), the other side of which engages with the housing (Bf). 5. The method according to any one of claims 1 to 4,
A hook H fixed to the housing supporting portion H4 by the shaft pin Hs is provided under the housing Bf in such a manner as to be elastically supported by the torsion coil spring H5,
Characterized in that the hook (H) is provided with first and second inclined stopping hooks (H1) (H2) formed continuously. An input step (100) of inputting raw water into the filtration tank (P1);
A filtration step (200) of filtering the raw water supplied to the charging step (100) using a floating membrane (A); And
A position adjusting step 300 of adjusting the height of the floating membrane A through a buoyancy ascending / descending box 20 provided in the floating membrane A of the filtration step 200,
In the ascending / descending box 20,
And a water level monitoring means (27) for measuring the water level of the filtration tank (P1)

The water level monitoring means (27)
A housing Bf in which the water level monitoring sensor M is incorporated and a cover Bc covering the housing Bf and an engagement member Au fixing the housing Bf to the filtration tank P1 ,
The coupling member Au (A l)
A first link A1 coupled to the filtration tank P1 and a second link A2 for length and angle adjustment and a second link A2 coupled to the first link A1, And a third link (A3), the other side of which is coupled to the housing (Bf)
A first latching portion Bf1 is formed on the upper side of the housing Bf and a second latching portion Bf2 is formed on the upper side of the housing Bf,
Wherein the cover Bc is provided with an upper first protrusion Bc1 and a lower second protrusion Bc2 which are coupled to the first or second latching portion Bf1 or Bf2. The method according to claim 6,
The lifting / lowering box 20
And a fluid valve (23) provided in the storage part (21) to allow fluid to flow in and out of the storage part (21). 8. The method according to claim 6 or 7,
A hook H fixed to the housing supporting portion H4 by the shaft pin Hs is provided under the housing Bf in such a manner as to be elastically supported by the torsion coil spring H5,
Wherein the hook (H) is provided with first and second inclined stopping hooks (H1) and (H2) formed continuously. delete delete

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