CN108114606B - Membrane filtration system - Google Patents
Membrane filtration system Download PDFInfo
- Publication number
- CN108114606B CN108114606B CN201710087258.3A CN201710087258A CN108114606B CN 108114606 B CN108114606 B CN 108114606B CN 201710087258 A CN201710087258 A CN 201710087258A CN 108114606 B CN108114606 B CN 108114606B
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- membrane
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- separation membrane
- support frame
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- 238000005374 membrane filtration Methods 0.000 title claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 427
- 238000000926 separation method Methods 0.000 claims abstract description 237
- 239000010802 sludge Substances 0.000 claims abstract description 59
- 238000007667 floating Methods 0.000 claims abstract description 51
- 238000012545 processing Methods 0.000 claims abstract description 46
- 239000012510 hollow fiber Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 238000001914 filtration Methods 0.000 claims description 32
- 230000008878 coupling Effects 0.000 claims description 25
- 238000010168 coupling process Methods 0.000 claims description 25
- 238000005859 coupling reaction Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 25
- 239000000706 filtrate Substances 0.000 description 33
- 238000011084 recovery Methods 0.000 description 30
- 238000011109 contamination Methods 0.000 description 22
- 230000033001 locomotion Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
- 239000010865 sewage Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000006644 Lossen rearrangement reaction Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009285 membrane fouling Methods 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/02—Specific tightening or locking mechanisms
- B01D2313/025—Specific membrane holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/14—Specific spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/20—Specific housing
- B01D2313/203—Open housings
- B01D2313/2031—Frame or cage-like structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2319/00—Membrane assemblies within one housing
- B01D2319/04—Elements in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
- B01D2321/2033—By influencing the flow dynamically
- B01D2321/2058—By influencing the flow dynamically by vibration of the membrane, e.g. with an actuator
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to a membrane filtration system that reciprocates a separation membrane to thereby effectively remove foreign matter adhering to the separation membrane while reducing energy use, and provides a membrane filtration system comprising: a treatment tank; a membrane support frame disposed in the processing tank; a separation membrane module mounted on the membrane support frame; a reciprocating device connected to the membrane support frame for reciprocating the membrane support frame; and a sludge floating unit disposed at a lower end of the membrane support frame and floating sludge accumulated in the treatment tank, wherein the separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane disposed between the upper frame and the lower frame.
Description
Technical Field
The present invention relates to a membrane filtration system, and more particularly, to a membrane filtration system capable of effectively removing foreign substances attached to a separation membrane while reducing energy consumption by reciprocating the separation membrane.
Background
Generally, the separation membrane technology is one of separation technologies using a substance selective permeation property of a polymer material, and unlike the distillation technology, a membrane separation process has no phase change, so that energy can be saved, and the process is simple and convenient, so that a space occupied by the apparatus is small. Separation membranes have been developed around reverse osmosis membranes (reverse osmosis membranes), and are widely used in ultrafiltration (ultrafiltration), microfiltration (microfiltration), nanofiltration (nanofiltering), and the like.
Membrane Bioreactors (MBR), which are one type of Membrane filtration systems, are processes that utilize separation membranes instead of settling tanks that have been used as the final treatment step of biological treatment processes.
This procedure has the following advantages: the efficiency of solid/liquid separation (solid/liquid separation) is improved by maintaining the concentration of microorganisms in the reactor at a high level to improve the treatment efficiency of organic substances, nitrogen components, etc., and removing suspended substances, microorganisms, etc. via the separation membrane, thereby solving the problems of the conventional biological treatment process.
The membrane bioreactor requires a small floor space and is excellent in treatment efficiency as compared with the conventional activated sludge (activated sludge) process, and the demand for the membrane bioreactor is expected to be continuously increased in order to cope with the increase in water demand and the stricter water quality control due to the increase in population and urbanization.
In general, unlike a conventional membrane-coupled treatment system used as a subsequent step of a 2-stage biological treatment facility, an immersion type membrane bioreactor is a reactor in which a separation membrane module is directly immersed in a 2-stage bioreactor to perform solid-liquid separation, and this configuration can achieve a double effect of performing a simple solid-liquid separation function and raising the water quality to a high treatment level.
On the other hand, in most Membrane Biological Reactor (MBR) processes, when a separation membrane module is immersed in a biological reactor, the separation membrane module corresponding to the treatment capacity is provided in a separate frame, and thus, by filtration of the separation membrane, treated water is discharged through a filtration pipe through a process of upper water collection or water collection at both ends according to the form of the separation membrane module.
However, in the filtration process, suspended matter and the like adhere to the surface of the membrane to cause a problem of hindering the flow of water, and the membrane bioreactor gradually decreases in filtration capacity with the occurrence of membrane fouling, and the membrane penetration pressure increases, so that the fouled membrane is difficult to wash.
Although various forms of application methods have been studied for sewage treatment technologies using conventional separation membranes in other countries such as japan and europe since long ago, application techniques that have not been practically developed in the early 90 s due to problems of high cost such as cost of separation membranes and energy cost, and problems of membrane sealing have not been developed, and their application is limited to the field of academic research or special cases.
However, since the early 1990 s, the problem of membrane fouling, which is the biggest obstacle in field application of separation membrane technology, has been considerably alleviated with the introduction of protocols for use of separation membranes, such as the submerged type and the activated sludge-bound type, in which the following modes are used: the separation membrane is impregnated in the activated sludge reaction tank, and an upward water flow caused by bubbles generated during aeration is used as an effective means for suppressing the clogging of the separation membrane.
As described above, the air scouring method has been conventionally used for cleaning the clogging of the membrane, and as one of the air scouring methods, a method of spraying air to the outer wall of the separation membrane with an upward water flow as described above to minimize damage to the membrane and remove sludge adhering to the membrane is used.
However, this air refining method needs to be performed over the entire range of the separation membrane, and thus has a problem of considerable energy consumption.
Documents of the prior art
Patent document
U.S. patent grant No.: US 8287733B1
Disclosure of Invention
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a membrane filtration system capable of effectively removing foreign substances attached to a separation membrane while reducing energy use by reciprocating the separation membrane.
The present invention for solving the above-described problems provides a membrane filtration system comprising: a treatment tank; a membrane support frame disposed in the processing tank; a separation membrane module mounted on the membrane support frame; a reciprocating device connected to the membrane support frame to reciprocate the membrane support frame; and a sludge floating unit disposed at a lower end of the membrane support frame and floating sludge accumulated in the treatment tank, wherein the separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane disposed between the upper frame and the lower frame.
A water collecting part may be formed inside the upper frame, and the water collecting part may communicate with the hollow part of the hollow fiber membrane.
The upper and lower frames may include a space maintaining part formed to protrude from the frames.
The space maintaining portion may include a coupling portion for coupling with another space maintaining portion facing each other.
The hollow fiber membranes may be arranged to form a plurality of bundles, with the respective bundles of hollow fiber membranes being spaced apart from each other.
The separation membrane module may be provided in plurality in parallel in the membrane support frame.
The present invention may further include a filter pipe disposed in the membrane support frame, and the plurality of separation membrane modules may be coupled to the filter pipe in parallel.
In this case, a plurality of coupling holes may be formed in the filter pipe, one end of the upper frame may be inserted into the coupling holes, and the water collecting part and the filter pipe may be coupled to each other in a state of being communicated with each other.
The filtration piping may be disposed at an upper center portion of the membrane support frame, and the plurality of separation membrane modules may be coupled to both sides of the filtration piping in parallel and symmetrically.
The filter pipe may be disposed perpendicular to a direction in which the membrane support frame reciprocates.
According to the present invention, the separation membrane is reciprocated by the reciprocation device, thereby effectively preventing or removing foreign substances attached to the separation membrane.
At this time, the plurality of separation membrane modules are formed in a quadrangular shape in the membrane support frame, whereby a dead zone (dead zone) in the treatment tank can be minimized, and thus the filtration treatment capacity of the sewage (or wastewater) can be improved.
Further, the separation membrane modules include the interval maintaining part, so that a predetermined interval can be maintained between the separation membrane modules, and fouling (fouling) occurring during stagnation of water between the modules can be reduced.
As a result, the energy used for washing the separation membrane can be saved as compared with the conventional air refining method.
The effects of the present invention are not limited to the above-described effects, but should be understood to include all effects that can be derived from the detailed description of the invention or the structure of the invention described in the claims.
Drawings
Fig. 1 is a perspective view showing an embodiment of the membrane filtration system of the present invention.
Fig. 2 is a view showing the structure of the inventive shuttle shown in fig. 1.
Fig. 3 is a view illustrating the inventive connecting rod shown in fig. 2.
Fig. 4 is a view showing the inventive rotor shown in fig. 2.
Fig. 5 is a side view showing a first embodiment of the inventive runner shown in fig. 1.
Fig. 6 is a front cross-sectional view of the invention shown in fig. 5.
Fig. 7a and 7b are views showing a second embodiment of the inventive runner shown in fig. 1.
Fig. 8a and 8b are views showing a third embodiment of the inventive runner shown in fig. 1.
Fig. 9a and 9b are views showing a fourth embodiment of the runner of the invention shown in fig. 1.
Fig. 10 is a side view showing a blade member of the present invention.
Fig. 11 is an operational state diagram of the invention shown in fig. 10.
Fig. 12 is a side view showing a sludge floating device of the present invention.
Fig. 13 is a side sectional view of the sludge floating device of the invention shown in fig. 12.
Fig. 14 is a rear view of the sludge floating device of the invention shown in fig. 12.
Fig. 15 is an operational state diagram of the invention shown in fig. 12.
Fig. 16a and 16b are diagrams showing an example of the interval measuring unit of the present invention.
Fig. 17 is a plan view showing an embodiment of the interval adjusting means of the present invention.
Fig. 18 is a partial side view of the first interval adjustment part of the invention shown in fig. 17.
Fig. 19 is a side view illustrating a second interval adjustment part of the invention shown in fig. 17.
Fig. 20 is a side sectional view showing the linkage of the sludge floating device and the second interval adjusting part of the invention shown in fig. 19.
Fig. 21 is a rear view showing the linkage of the sludge floating device and the second interval adjusting part of the invention shown in fig. 20.
Fig. 22 is a view showing the structure of the separation membrane module of the invention shown in fig. 1.
Fig. 23 is a diagram showing a first embodiment of the inventive membrane support frame shown in fig. 1.
Fig. 24 is a diagram showing a second embodiment of the membrane support frame.
Fig. 25 is a diagram illustrating a method of calculating a relaxation degree (lossenes) of the present invention.
Fig. 26 is an enlarged view of the length adjustment portion of the first embodiment.
Fig. 27 is an enlarged view showing a length adjustment part of the second embodiment.
Fig. 28 is a diagram showing a first embodiment of the filtrate discharge portion of the invention shown in fig. 1.
Fig. 29 is a diagram showing the second embodiment of the filtrate discharge portion.
Fig. 30 is a diagram showing the arrangement structure of the membrane support frame of the first embodiment.
Fig. 31 is a diagram showing the configuration structure of the membrane support frame of the second embodiment.
Fig. 32 is a diagram showing a configuration structure of a membrane support frame of the third embodiment.
Fig. 33 is a diagram showing a configuration structure of a membrane support frame of the fourth embodiment.
Description of the reference numerals
100: membrane filtration system
200: the shuttle 205: driving part
210: the motor 211: first pulley
212: the transmission belt 213: second pulley
220: the connecting rod 221: connecting rod body
223: first connection hole 225: second connecting hole
230: the rotor 233: connecting piece
250: reciprocating frame
300: the processing tank 310: inlet port
320: outflow opening
400: sludge floating part
410: blade member 411: blade body
413: upper floating wing 420: sludge floating device
421: first blade body 425: first sealing plate
430: the lifting unit 431: oil hydraulic cylinder
433: the lifting rod 441: second blade body
450: elastomer 455: second sealing plate
46: the buffer plate 470: third blade body
480 upper floating wing
500: sliding device
First embodiment
511: guide rail 512: stop part
513: wheel block 514: roller wheel
514 a: center wheel portion 514 b: rotating shaft
514 c: the sub-wheel portion 515: rolling member
Second embodiment
521: guide rail 522: stop part
523: wheel support 524: cone pulley
524 a: rotation shaft 525: rolling member
Third embodiment
531: linear guide rail 532: stop part
533: the moving beam 534: ball bearing
Fourth embodiment
551: guide rail 552: first protruding part
561: wheel block 571: roller wheel
572: second projection 580: sub-unit
581: first body portion 582: first sub-wheel
583: second body portion 584: second sub-wheel
600: the membrane support frame 620: sub-frame
640: the filtration piping 642: combining hole
700: separation membrane module 710: upper frame
711: water collection portion 720: lower frame
712. 722: interval maintaining unit 714: discharge hole
730: hollow fiber membrane
First embodiment
740: length adjusting portion 742: oil hydraulic cylinder
744: the calculation unit 746: driving part
Second embodiment
1740: length adjusting portion 1742: shaft
1744: cam 1746: motor with a stator having a stator core
810: interval measurement section 811: first interval measuring sensor
813: second interval measurement sensor 820: first interval adjusting part
820 a: the moving unit 821: adjusting cylinder
822: moving block 823: movable wheel
825: moving rail 826: a first drive part
827: first oil pressure amount calculation unit 828: first interval calculating part
829: first non-contact sensor 850: second interval adjusting part
851: second contactless sensor 852: second interval calculating part
853: the second oil pressure calculation unit 854: second driving part
860: interval adjusting device
First embodiment
900: filtrate discharge portion 920: water collecting pipe
940: first recovery pipe 960: second recovery pipe
Second embodiment
1900: filtrate discharge portion 1940: first recovery pipe
1960: second recovery pipe
1000: the control unit 1200: pollution measuring part
1400: adjustment control part
Detailed Description
Hereinafter, a preferred embodiment of the membrane filtration system of the present invention will be described with reference to fig. 1 to 33.
The terms described below are defined in consideration of functions of the present invention, and may be changed according to intention and custom of a user or an operator, and the following embodiments are not intended to limit the scope of rights of the present invention, but are merely illustrative matters of the structural elements mentioned in the scope of claims of the present invention.
Parts that are not related to the description are omitted for the sake of clarity, and the same reference numerals are given to the same or similar components throughout the specification. In the present invention, the term "includes" or "including" when the component is used in the specification means that other components may be included without any special mention but does not mean that other components are excluded.
First, referring to fig. 1, an embodiment of a membrane filtration system 100 according to the present invention may be basically configured to include a treatment tank 300, a membrane support frame 600, a separation membrane module 700, a reciprocation device 200, a sludge float 400, a skid 500, and a filtrate discharge unit.
Further, according to the additional embodiment, the apparatus may further include a length adjusting unit 740, a gap measuring unit 810, a gap adjusting device 860, a control unit 1000, and the like.
The present invention is applicable to various devices constituting a membrane filtration system, but the present invention is particularly limited to a membrane bioreactor for explanation.
The treating tank 300 may be in a tank form, and the treating tank 300 may include an inflow port 310 through which wastewater (or sewage) flows and an outflow port 320 through which treated wastewater (or sewage) is discharged.
In this case, it is preferable that the inflow port 310 is formed to allow inflow water to flow upward of the treatment tank 300, thereby generating a flow upward from the inlet of the treatment tank 300, and thus inflow water is prevented from staying at the lower side of the treatment tank 300 and more effectively filtered. The inlet 310 may be formed on the upper side of one surface of the treatment tank 300, or may be formed as a pipe bent from the lower side to the upper side when the lower side is more advantageous in design.
The membrane support frame 600 is a portion that is disposed inside the processing tank 300 and to which a membrane module 700 in the form of a membrane (membrane) is attached. As described below, the membrane support frame 600 is connected to the shuttle 200, and the membrane support frame 600 integrally reciprocates together with the separation membrane module 700 by the shuttle 200.
The shuttle 200 may be connected to the membrane support frame 600 and reciprocate the membrane support frame 600. The reciprocating device 200 may include a reciprocating frame 250 and a driving part 205.
The shuttle frame 250 may be a portion connected to the film support frame 600 and supporting the film support frame 600. The driving unit 205 may be disposed in the processing bath 300, connected to one side of the shuttle frame 250, and configured to move the shuttle frame 250. The driving part 205 may include a motor 210, a first pulley 211, a second pulley 213, a rotor 230, and a link 220.
First, the motor 210 may be disposed at an upper end side of the processing bath 300. The shaft of the motor 210 is coupled to the first pulley 211, and the second pulley 213 is connected to the first pulley 211 via a belt 212 to rotate together therewith.
The rotor 230 is connected to a rotation shaft of the second pulley 213 to rotate, and the link 220 may be connected between the rotor 230 and the reciprocating frame 250 to convert the rotation into the reciprocating motion.
In an embodiment of the present invention, a plurality of coupling members 223 coupled to the connecting rod 220 may be formed at the rotor 230. The plurality of connection members 233 may be disposed at different intervals from the center of the rotor 230.
Referring to fig. 4, it can be seen that 5 coupling members 233 are processed at different intervals (radii) from the center of the rotor 230. However, the number of the rotor 230 may be plural and the rotor may be arranged at various intervals. When the user wants to adjust the reciprocating distance of the reciprocating frame 250, the user may change the portion connected to the connecting rod 220.
For example, if a user wants to reduce the reciprocating distance of the reciprocating frame 250, the link 220 may be connected to the connecting member 233a spaced apart from the center of the rotor 230 by a relatively narrow distance. In this case, since the rotation radius of the link 233a by the rotation of the rotor 230 is small, the reciprocating distance of the link 220 becomes short, which reduces the reciprocating distance of the reciprocating frame 250.
On the contrary, if a user wants to increase the reciprocating distance of the reciprocating frame 250, the link 220 may be connected to the connecting member 233b spaced apart from the center of the rotor 230 by a relatively large distance. In this case, since the rotation radius of the link 233b by the rotation of the rotor 230 is large, the reciprocating distance of the link 220 becomes long, which increases the reciprocating distance of the reciprocating frame 250.
The connecting rod 220 may include a connecting rod body 221, a first connecting hole 223 and a second connecting hole 225. The link body 221 may have an elongated shape, the first connection hole 223 may be a portion that is disposed at one side of the link body 221 and coupled to the connection member 233 of the rotor 230, and the second connection hole 225 may be a portion that is disposed at the other side of the link body 221 and coupled to the reciprocating frame 250.
In this case, in an embodiment of the present invention, the first connection hole 223 may be formed in a plurality at equal intervals along the longitudinal direction of the connecting rod body 221. Referring to fig. 3, it can be seen that 4 first connection holes 223 are processed along the length direction of the connecting rod body 221. However, the number of the connecting rod bodies 221 is not limited to this, and may be varied according to the size of the connecting rod bodies. When a user wants to adjust the reciprocating distance of the reciprocating frame 250, the user may change the position of the first connection hole 223 connected to the rotor 230.
For example, if a user wants to reduce the reciprocating distance of the reciprocating frame 250, the coupling member 233 of the rotor 230 may be fastened to the first coupling hole 223a of the link 220, which is relatively close to the second coupling hole 225. In this case, since the reciprocating distance of the connecting rod 220 by the rotation of the rotor 230 is shortened, the reciprocating distance of the reciprocating frame 25 is also reduced.
On the contrary, if a user wants to increase the reciprocating distance of the reciprocating frame 250, the coupling member 233 of the rotator 230 may be fastened to the first coupling hole 223b of the link 220, which is relatively distant from the second coupling hole 225. In this case, since the reciprocating distance of the link 220 by the rotation of the rotor 230 is increased, the reciprocating distance of the reciprocating frame 250 is also increased.
At this time, if a user connects the outermost circumference link 233b of the rotator 230 and the first connection hole 223b, the reciprocating distance of the link 220 by the rotation of the rotator 230 is maximized, and thus the reciprocating distance of the reciprocating frame 250 can be maximized.
Of course, if a user connects the connection member 233a closest to the center of the rotator 230 to the first connection hole 223a, the reciprocating distance of the link 220 by the rotation of the rotator 230 is minimized, and thus the reciprocating distance of the reciprocating frame 250 can be minimized.
By the reciprocating motion, the separation membrane is caused to continue flowing during the sludge filtration process, whereby the sludge is caused to fall off by inertia, and the separation membrane can be washed. As a result, clogging of the membrane can be prevented, maintaining the efficiency of the system.
Also, since the reciprocating distance of the reciprocating frame 250 can be adjusted as described above, the reciprocating distance (amplitude) can be effectively adjusted according to the degree of contamination of the separation membrane module 700 measured by transmembrane differential pressure (TMP), and further energy can be saved. The following control method will be described in detail.
Next, the slide device 500 may be disposed in the processing bath 300, and may be in communication with the shuttle device 200 to guide a moving direction of the film support frame 600. In the embodiment of the present invention, the above-mentioned skating device 500 may have 4 forms. The following examples are given by way of illustration. First embodiment
Fig. 5 and 6 are views illustrating a first embodiment of the inventive runner 500 shown in fig. 1.
Referring to fig. 5 and 6, the first embodiment of the sliding device 500 may include a guide rail 511 and a rolling member 515. The guide rails 511 may be disposed in a pair on both sides along the longitudinal direction of the processing bath 300 by bolt fastening or welding, and may have a rectangular cross section.
The rolling member 515 may be disposed at a lower end of the shuttle frame 250 and placed at an upper end of the guide rail 511. The rolling member 515 may include a wheel block 513 and a roller 514, the wheel block 513 may be coupled to a lower end of the shuttle frame 250 by fastening or welding with a bolt 513a, and a rotation shaft 514b of the roller 514 may be inserted into a through hole 513a of the wheel block 513 and rotatably mounted to the wheel block 513.
The roller 514 may include a central wheel portion 514a and a sub-wheel portion 514 c. The central wheel portion 514a is a portion that is placed on the guide rail 511 and supports the load of the reciprocating frame 250. The sub wheel portion 514c is a portion extending to a side surface of the guide rail 511 so that the reciprocating frame 250 does not separate during movement. Accordingly, the roller 514 is not separated from the guide rail 511 during the reciprocating motion, and thus the operation can be relatively safely performed.
In order to prevent the roller 514 from being detached, stoppers 512 may be disposed at both ends of the guide rail 511.
Second embodiment
Fig. 7a and 7b are views illustrating a second embodiment of the inventive skid 500 shown in fig. 1.
Referring to fig. 7a and 7b, the second embodiment of the sliding device 500 may include a guide rail 521 and a rolling member 525. The guide rails 521 may be disposed in a pair on both sides along the longitudinal direction of the treatment tank 300 by bolt fastening or welding, and may have a tapered shape from the outside toward the inside.
The rolling members 525 may be disposed at both sides of the lower end of the shuttle frame 250, and include a wheel support 523 and a cone wheel 524. The wheel support 523 may be coupled to the lower end of the shuttle frame 250 by a bolt 523a or a welding joint. The cone pulley 524 may be rotatably coupled to the rotation shaft 524a inserted into the through hole 523a of the pulley support 523, and may be tapered from a center side toward an outer side.
Since the tapered shape of the guide rail 521 corresponds to the tapered shape of the rolling member 525, the rolling member 525 is stably placed at the upper end of the guide rail 521, and the reciprocating frame 250 smoothly operates. In this case, stoppers 522 may be disposed at both ends of the guide rail 521 in order to prevent the cone 524 from being disengaged.
Third embodiment
Fig. 8a and 8b are views showing a third embodiment of the inventive skid 500 shown in fig. 1.
Referring to fig. 8a and 8b, the third embodiment of the sliding device 500 may include a linear guide 531, a ball bearing 534, and a moving beam 533. The linear guide 531 may be disposed in a pair on both sides along the longitudinal direction of the processing bath 300 by bolt fastening or welding. At this time, the ball bearing 534 may be disposed at a portion of the linear guide 531 where the moving beam 533 is placed so as to be smoothly moved.
The traveling beam 533 may be coupled to the lower end of the shuttle frame 250 by a bolt 533a fastened or welded to be placed on the linear guide 531. When the reciprocating frame 250 is reciprocated by the driving unit 205, the moving beam 533 moves on the linear guide 531, and at this time, the moving beam 533 is moved in a state of being placed on the inner groove 531a of the linear guide 531, so that it is not separated to the outside, and the operation is stable.
In order to prevent the movable beam 533 from being separated beyond the longitudinal direction, stoppers 532 may be disposed at both ends of the linear guide 531.
Fourth embodiment
Fig. 9a and 9b are views showing a fourth embodiment of the inventive runner 500 shown in fig. 1.
Referring to fig. 9a and 9b, the fourth embodiment of the sliding device 500 may include a guide rail 551, a wheel block 561, a roller 571, and a subunit 580.
The guide rails 551 may be disposed in a pair on both sides of the upper end of the processing bath 300 along the longitudinal direction by bolt fastening 554 or welding. The guide rail 551 may be formed in an H-beam shape, and an upper edge portion of the guide rail 551 is formed linearly along the guide rail 551 by a first protrusion 552 extending downward.
The wheel block 561 may be coupled to a lower end of the shuttle frame 250 by fastening or welding bolts 562, and the roller 571 may be rotatably mounted to the wheel block 561.
Specifically, the rotation shaft 573 of the roller 571 may be inserted into the through hole 566 of the wheel block 561, and the wheel cap 574 may be fastened to the wheel block 561 by the bolt 575 to be rotatable. At this time, in order to smoothly rotate the roller 571, a bearing 565 may be disposed on the wheel block 561, and a shaft cover 563 may be fastened and fixed by a bolt 564.
The roller 571 may have a circular plate shape, and a second protrusion 572 protruding toward a central axis of the roller 571 is formed on an outer circumferential surface thereof along a circumferential direction.
In order to prevent the roller 571 from being separated from the guide rail 551, the sub-unit 580 is disposed between the roller 571 and the guide rail 551 in an interlocking manner. The sub-unit 580 may include a first body portion 581, a second body portion 583, a first sub-wheel 582, and a second sub-wheel 584.
First, the first body 581 may be a portion inserted into the linear first protrusion 552 of the guide rail 551. The first sub-wheel 582 is disposed inside the first body 581, and the first sub-wheel 582 linearly moves by rolling along the first protrusion 552.
In this case, in the first sub-wheel 582, a rotation wheel 582a is attached to a wheel main body 582b, and the wheel main body 582b is fastened and fixed to the inside of the first main body 581 by a bolt 582 c.
Thereafter, the second body portion 583 may be a portion into which the second protrusion 572 of the roller 571 is inserted. The second sub wheel 584 is disposed inside the second body 583, and the second sub wheel 584 rolls on the second protrusion 572 according to the rotation of the roller 571.
At this time, in the second sub-wheel 584, a rotation wheel 584a is attached to a wheel main body 584b, and the wheel main body 584b is fastened and fixed to the inside of the second main body portion 583 by a bolt 584 c.
The first body portion 581 and the second body portion 583 may be fastened to each other by a bolt 586. In this case, the first body 581 and the second body 583 support the first protrusion 552 and the second protrusion 572 in close contact with each other, so that the roller 571 can move in close contact with the guide 551 without separating from the guide.
Based on the above-described embodiment, the slide device 500 of the present invention enables the membrane support frame 600 to perform more stable and soft operation when the membrane support frame 600 performs the linear motion by the reciprocating device 200, which contributes to improvement of energy and reduction of fluidity of the separation membrane.
The sludge floating unit 400 of the present invention will be described below. The present invention does not use an air refining method and thus cannot obtain a sludge floating effect by air refining, and thus includes a separate sludge floating unit 400 to prevent sludge from stagnating and accumulating inside the treatment tank 300 and to float the sludge, thereby easily realizing a filtering function by a separation membrane module.
First embodiment
According to the first embodiment, the sludge floating portion 400 can be formed of the blade member 410, and the description will be given with reference to fig. 10 and 11. Fig. 10 is a side view showing a blade member of the present invention. Fig. 11 is an operational state diagram of the invention shown in fig. 10.
The blade member 410 is disposed at the lower end of the membrane support frame 600, and floats sludge accumulated in the lower portion of the treatment tank 300. The blade member 410 may include a blade body 411 and a floating wing 413.
The blade body 411 may be disposed at a lower end of the film support frame 600, and a plurality of blades may be attached along a width direction of the film support frame 600. In the embodiment of the present invention, as can be seen with reference to fig. 10, 3 are installed at the lower end of the membrane support frame 600. The number of the blade bodies 411 may be implemented in various numbers according to viscosity of sludge, amount of sludge, and the like.
For example, in the case where a strong vortex is required for floating sludge due to high viscosity of sludge, and in the case where a large amount of sludge is accumulated and a large amount of floating is required, a user may increase the number of blade bodies 411 attached to the lower end of the membrane support frame 600. As the number of the vane bodies 411 increases, the number of the floating wings 413 combined therewith also increases.
The upper floating wing 413 may be connected to a lower end of the vane body 411 at a predetermined angle θ to float sludge during the reciprocating motion of the membrane support frame 600. In the embodiment of the present invention, the angle may be 150 degrees, but is not limited thereto, and may be set to be different depending on the distance from the bottom of the processing tank 300, the thickness of the sludge blanket, and the like.
Referring to fig. 11, when the membrane support frame 600 reciprocates, the upper float 413 moves in the reciprocating direction of the membrane support frame 600 to swirl sludge deposited at the lower end of the treatment tank 300.
As a result, the sludge floats up and is filtered again by the separation membrane 700.
Second embodiment
On the other hand, according to the second embodiment, the sludge floating unit 400 can be formed by a sludge floating device 420, and the description will be given with reference to fig. 12 to 15. Fig. 12 is a side view showing a sludge floating device of the present invention. Fig. 13 is a side sectional view of the sludge floating device of the invention shown in fig. 12. Fig. 14 is a rear view of the sludge floating device of the invention shown in fig. 12. Fig. 15 is an operational state diagram of the invention shown in fig. 12.
The sludge floating device 420 may be disposed at a lower end of the membrane support frame 600 to be extendable and retractable in order to float sludge accumulated in a lower portion of the treatment tank 300. The sludge floating device 420 may include a first blade body 421, a second blade body 441, a third blade body 470, a lifting unit 430, a floating wing 480, an elastic body 450, and a buffer plate 460.
The first blade body 421 may be installed at the lower end of the membrane support frame 600. The second blade body 441 may be connected to a lower end of the first blade body 421. Specifically, a first space 421a is formed inside the first blade body 421, and a part of the second blade body 441 is disposed in the first space 421a so as to be movable in the vertical direction. At this time, the first cover 423 is fastened and fixed by the bolts 424, and the first seal plate 425 is disposed to be in close contact with the space between the inner surface of the first cover 423 and the outer surface of the second blade body 441 in order to prevent the inflow of fluid.
The lifting unit 430 is disposed between the first blade body 421 and the second blade body 441 in an interlocking manner, and can lift and lower the second blade body 441. The lifting unit 430 may include a cylinder 431 and a lifting rod 433, and the cylinder 431 may be fixed to one surface of the first blade body 421 by bolt fastening or welding. The lift rod 433 is connected to the rod of the cylinder 431 by bolt fastening or welding, and a state in which the lift rod 433 is attached along the longitudinal direction of the second blade body 441 can be confirmed with reference to fig. 13 and 14.
When the user drives the hydraulic cylinder 431, the lift rod 433 moves in the vertical direction to adjust the vertical position of the upper float 480. This enables the user to select an appropriate position at which the upper float wings 480 do not collide with the bottom of the treatment tank 300 and sludge accumulated on the bottom of the treatment tank 300 can be effectively floated.
Then, the third blade body 470 is connected to a lower end of the second blade body 441, and specifically, as shown in fig. 13, a part of the third blade body 470 is disposed in a second space 441a formed in the second blade body 441 so as to be movable up and down, and a second sealing plate 455 for preventing inflow of a fluid is disposed on an inner surface of the second blade body 441 and an outer surface of the third blade body 470.
At this time, the upper floating wing 480 may be connected to the lower end of the third blade body 470 to float sludge during the reciprocating motion of the membrane support frame 600. The upper floating wing 480 may form a predetermined angle θ with the third vane body 470. In the embodiment of the present invention, it may be 150 degrees, but is not limited thereto, and various angles may be set according to a distance from the bottom of the processing tank 300, a thickness of the sludge blanket, and the like.
The elastic body 450 may be disposed between the second blade body 441 and the third blade body 470 to alleviate an impact applied when the upper floating wing 480 collides with the bottom of the processing bath 300. Specifically, the elastic body 450 may be disposed in the second space 441a of the second blade body 441, cover the second cover 443, and be fastened and fixed by the bolt 444. The lower side of the elastic body 450 is in contact with the upper side of the third vane body 470.
When the upper float blade 480 contacts the bottom of the processing bath 300, an impact force is applied to the upper float blade 480 in an upward direction due to the collision. At this time, the elastic body 450 causes the third vane body 470 to rise and simultaneously alleviates the impact force.
On the other hand, the buffer plate 460 may be disposed at an end of the upper float blade 480 in order to alleviate an impact applied when the upper float blade 480 collides with the bottom of the processing bath 300. The buffer plate 460 may be made of elastic material such as rubber, silicone, plastic, etc.
The function of the buffer plate 460 is to receive an impact before the upper floating wing 480 collides with the bottom of the processing bath 300, and to be bent by an elastic force, thereby offsetting the impact force applied to the upper floating wing 480.
That is, in the embodiment of the present invention, when the upper floating wing 480 collides with the bottom of the processing bath 300, the buffer plate 460 primarily relieves the impact by the elastic material, and the elastic body 450 lifts the third blade body 470 to secondarily relieve the impact. As a result, the damage of the upper float wing 480 is prevented.
Fig. 15 shows an operation state of the sludge floating device 420, and as can be seen from fig. 15, while the membrane support frame 600 reciprocates, the sludge floating device 420 attached to the lower end of the membrane support frame 600 reciprocates together with the membrane support frame 600 to generate a vortex, thereby floating the sludge.
At this time, even if the upper float 480 is excessively close to the bottom of the processing bath 300, since the impact is firstly relaxed by the buffer plate 460 and the impact transmitted to the third blade body 470 through the upper float 480 is secondarily relaxed by the elastic body 450, it is possible to prevent the damage of the equipment during the operation.
The separation membrane module 700 may be in any form of a spiral (spiral), tubular (tubular), hollow fiber (hollow fiber), and plate and frame (plate and frame), and particularly, in the hollow fiber type, the hollow fiber has a hollow fine tube form in which the diameter of the hollow fiber is 0.2 to 2mm and the hollow state is hollow, and therefore, the membrane area per unit volume of the hollow fiber is extremely large as compared with other forms, and therefore, the membrane module has extremely high productivity, and is preferably formed of a hollow fiber membrane.
Thus, in one embodiment of the present invention, a hollow fiber membrane bundle is formed to form the separation membrane module 700, and the hollow fiber type separation membrane can be used in a pressurized manner in which the hollow fiber membrane is filtered from the inside to the outside and is sucked in the opposite direction, and also in a manner in which the hollow fiber membrane is used in an activated sludge method used in treating sewage and sewage, a manner in which the hollow fiber membrane is circulated to the outside (external type) and a manner in which the module is directly immersed in a bioreactor (submirgedtype) are included. In the present embodiment, a description will be given with reference to a mode of sucking a filtrate from the outside to the inside of the separation membrane module 700 and a mode of directly immersing the separation membrane module 700 in the treatment tank 300.
Referring to fig. 22, describing the separation membrane module 700 in detail, basically, the separation membrane module 700 may include an upper frame 710 and a lower frame 720, and a plurality of hollow fiber membranes 730 are fixedly disposed between the upper frame 710 and the lower frame 720 in a bundle-forming manner.
In this case, the upper frame 710 and the lower frame 720 may be symmetrically formed in the same shape and may have various patterns. In the present embodiment, the upper frame 710 and the lower frame 720 may be formed in a long rectangular shape.
Both ends of the hollow fiber membranes 730 are fixed to the upper frame 710 and the lower frame 720, respectively, and the hollow fiber membranes 730 are inserted so that the water collecting part 711 formed to form a space inside the upper frame 710 and the hollow parts of the hollow fiber membranes 730 communicate with each other. Accordingly, the filtrate sucked from the outside to the inside of the hollow fiber membrane and filtered is collected in the water collecting part 711. The following description will explain the details of the filtrate discharge unit.
In the above, both ends of the hollow fiber membrane are fixed to the upper frame and the lower frame, respectively, but according to another embodiment, the hollow fiber membrane may be fixedly disposed between the upper frame and the lower frame, and both ends of the hollow fiber membrane may be fixed to the upper frame and wound by fixing rods disposed at the lower frame to have a U-shape. For example, the fixing rod may be a rod having a space in the middle through which the hollow fiber membrane can pass.
At this time, the hollow fiber membranes 730 are densely formed as a curtain along the longitudinal direction of the frame, and are formed in bundles of a fixed length, with the bundles being separated by a predetermined distance. This is because if the separation membrane is formed very densely along the longitudinal direction, the water stagnates and the fouling (fouling) increases, and therefore, a slight separation distance is provided to smoothly flow the water.
As described below, a plurality of separation membrane modules 700 as described above may be disposed inside the membrane support frame 600, and in this case, since the air scouring method is not used in the present invention, if the interval between the respective separation membrane modules 700 is too narrow or not, water stagnates between the respective modules, and fouling becomes more serious. Therefore, it is required to more smoothly flow water between the respective modules by reducing the density of the separation membrane modules 700.
Thus, as shown in fig. 22, in order to maintain a constant interval between the separation membrane modules 700, an interval maintaining part may be formed in each of the upper frame 710 and the lower frame 720. Specifically, at least one interval maintaining part 712 may be formed to protrude a certain length from each side of the upper frame 710, and at least one interval maintaining part 722 may be formed to protrude from each side of the lower frame 720. In this case, the position of the upper frame interval maintaining part 712 and the position of the lower frame interval maintaining part 722 are formed at the same position and are symmetrical to each other, and the interval maintaining part may be formed integrally with the upper frame or the lower frame or may be formed separately and coupled.
In this embodiment, the two space maintaining parts 712 and 722 are formed on both sides of the upper frame 710 or the lower frame 720, respectively, and are located at both ends of the frame in the longitudinal direction. Further, since the interval maintaining parts 712 and 722 protrude from the upper frame 710 or the lower frame 720 by 1cm, when a plurality of separation membrane modules 700 are arranged, the interval maintaining parts of the facing separation membrane modules 700 are abutted with each other, and the interval between the modules is constantly maintained at 2 cm.
However, the space maintaining part may protrude from the upper frame or the lower frame by 1cm or more, so that the space between the modules may be maintained by 2cm or more, and may be formed on only one side, instead of both sides of each frame. In this case, the interval between the respective modules is preferably 2cm or more in order to smoothly flow the water without stagnating between the respective separation membrane modules 700, but if the interval is excessively large, the installation space of the separation membrane modules is excessively occupied and the filtration efficiency is decreased, and thus, it is preferably 4cm or less.
The space maintaining portions 712 and 722 may further include coupling portions to be easily coupled to other facing space maintaining portions. For example, the coupling part may be formed of a magnet, and the interval maintaining part positioned at one side of the frame may be formed as an S-pole, and the interval maintaining part positioned at the other side may be formed as an N-pole, so that the coupling part may be coupled to each other when the plurality of separation membrane modules 700 are arranged. Thus, even if the separation membrane module 700 reciprocates, the interval between the modules can be firmly maintained.
Hereinafter, a structure in which the membrane support frame 600 and the plurality of separation membrane modules 700 according to the present invention are installed inside the membrane support frame 600 will be described.
First embodiment
First, referring to fig. 23, the structures of the membrane support frame 600 and the separation membrane module 700 disposed therein of the first embodiment will be described. As a reference, fig. 23 shows a configuration in which 4 separation membrane modules are arranged inside one membrane support frame in order to effectively present the arrangement structure of the separation membrane modules, but it is obvious that the present invention is not limited to this, and several tens of separation membrane modules exceeding 4 may be arranged inside one membrane support frame.
In this embodiment, the membrane support frame 600 may be a quadrangular frame, and may include a sub-frame 620 for disposing a plurality of separation membrane modules 700, the sub-frame 620 being disposed at a lower side of the membrane support frame 600. Thus, the plurality of separation membrane modules 700 may be coupled to the sub-frame 620 using bolts, or the plurality of separation membrane modules 700 may be coupled by being inserted into rails formed at the sub-frame 620. Specifically, the lower frame 720 of the separation membrane module is provided on the sub-frame 620, and the upper frame 710 of the separation membrane module is fixed to the membrane support frame 600 or to another frame such as a sub-frame.
But is not limited thereto, the separation membrane module 700 may be provided to the sub-frame 620 by various methods, and the separation membrane modules 700 may be directly provided to the membrane support frame 600.
The sub-frame 620 may be formed of a rectangular plate corresponding to the lower surface of the membrane support frame 600, or may have a plurality of bar shapes formed in parallel at the lower portion of the membrane support frame 600 along the direction in which the plurality of separation membrane modules 700 are disposed inside the membrane support frame 600.
The plurality of separation membrane modules 700 may be installed side by side in the sub-frame 620, which is the inside of the membrane support frame 600, and in the present embodiment, since each separation membrane module 700 has a long rectangular shape, the installation structure of the integrally coupled separation membrane modules has a rectangular or square shape, as shown in fig. 23.
The plurality of membrane support frames 600 are disposed inside the treatment tank 300, and as described above, the entire installation structure of the separation membrane module 700 is formed in a quadrangular shape, so that the separation membrane module 700 can be densely disposed, thereby minimizing a dead zone (dead zone) in the treatment tank 300 and improving a filtration capacity. But not limited thereto, the arrangement structure of the separation membrane module may take various shapes.
At this time, since the upper frame 710 and the lower frame 720 of the separation membrane module are respectively provided with the interval maintaining parts 712 and 722, when the plurality of separation membrane modules 700 are arranged side by side, the interval between the modules is constant.
Second embodiment
Next, referring to fig. 24, the structure of the membrane support frame 600 and the separation membrane module 700 disposed therein of the second embodiment will be described.
In the present embodiment, the membrane support frame 600 has a rectangular frame shape, and further includes a filter pipe 640 formed above the membrane support frame 600. Specifically, the filter pipe 640 is provided so as to cross the center of the upper surface of the membrane support frame 600.
Also, a sub-frame 620 for disposing a plurality of separation membrane modules 700 may be further included as in the first embodiment, and the sub-frame 620 is generally disposed at the lower side of the membrane support frame 600.
Coupling holes 642 for coupling the plurality of separation membrane modules 700 are formed at both sides of the filtration pipe 640, and the coupling holes 642 are coupled to the upper frames 710 of the separation membrane modules, so that the water collecting part 711 formed inside the upper frame 710 communicates with the filtration pipe 640. That is, in the present embodiment, the filter pipe 640 is disposed perpendicular to the direction in which the shuttle frame 250 reciprocates, and the plurality of separation membrane modules 700 are coupled to each other in parallel and symmetrically on both sides.
In this case, since the plurality of membrane support frames 600 are continuously arranged along the direction in which the reciprocating frame 250 reciprocates, the arrangement as in the present embodiment is more preferable than the arrangement in which the filter pipe is arranged parallel to the reciprocating direction, in view of the convenience of the structure such as the space for installing the filtrate discharge unit.
Thus, the filtrate collected in the water collecting parts 711 in the plurality of separation membrane modules can be collected in the filter pipe 640, which will be described in detail below. Also, the lower frames 720 of the separation membrane modules 700 may be coupled to the sub-frame 620 by bolts, or a plurality of separation membrane modules 700 may be coupled by being inserted into rails formed on the sub-frame 620. But is not limited thereto, the separation membrane module 700 may be provided at the sub-frame 620 by various methods, and the plurality of separation membrane modules 700 may be directly provided at the membrane support frame 600.
In this embodiment, as shown in fig. 24, the installation structure of the integrally combined separation membrane modules is in a quadrangular shape, and the separation membrane modules 700 can be densely arranged as in the first embodiment, thereby minimizing the dead space in the treatment tank 300 and improving the filtration capacity.
In this case, since the interval maintaining parts 712 and 722 are formed on the upper frame 710 and the lower frame 720 of the separation membrane module, the interval between the respective modules can be maintained constantly when the plurality of separation membrane modules 700 are arranged side by side.
In the explanation of the installation structure of the separation membrane modules, the predetermined interval is maintained between the separation membrane modules 700, but the interval maintaining unit may be formed only on one side of the frame, specifically, the interval maintaining unit may be formed by binding two separation membrane modules formed only on the left and right sides to form a group, and thus the predetermined interval may be maintained for each 2 separation membrane modules. It is also obvious that 3 separation membrane modules may be grouped into one group, and a predetermined interval may be maintained for each 3 modules.
Thereby, water is not stagnated between the separation membrane modules and a more dense separation membrane is formed, so that the filtering capacity can be improved.
As the reciprocating motion of the separation membrane module 700 is performed by the reciprocating means 200, inertia (inertial force) acting on the separation membrane module 700 occurs, which prevents the attachment of contaminants to the surface of the separation membrane or removes contaminants from the surface of the separation membrane.
In this case, in order to maximize the effect of preventing or removing foreign matter from adhering due to inertia, it is necessary to maintain the degree of relaxation (lossenes) of the separation membrane at an appropriate level.
If there is no slack in the separation membrane module 700, even if the separation membrane module 700 reciprocates together by the reciprocation of the membrane support frame 600, inertia is hardly applied, and there is a possibility that the separation membrane module 700 is broken or damaged, and if there is excessive slack, inertia is hardly applied, and the reciprocating distance of the separation membrane module 700 becomes large, thereby occupying a large installation space.
Accordingly, the length of the hollow fiber membrane 730 may be a value obtained by adding a length, which is greater than 0% of the distance Lo and is equal to or less than 10% of the distance Lo, to the distance Lo between the upper frame 710 and the lower frame 720. That is, the maximum length of the strands of the hollow fiber membranes 730 connected to the upper frame 710 and the lower frame 720, respectively, in a state where no tensile force is applied thereto (hereinafter, referred to as "length of the minimum separation membrane") may be further provided with an excess length of 10% or less, and particularly, preferably, with an excess length of 5% to 10%.
Specifically, as shown in fig. 25, the length Lf of the maximum separation membrane that can be caused to undergo inertia by the reciprocating motion can be calculated using the length of the minimum separation membrane, that is, the vertical distance Lo between the upper frame 710 and the lower frame 720, and the reciprocating distance a of the separation membrane module, and the degree of slack (lossenes) of the separation membrane module 700 can be determined by dividing the length Lf of the maximum separation membrane by the length Lo of the minimum separation membrane. That is, the relaxation degree (lossenes) of the separation membrane module 700 should be greater than 1 and 1.1 or less, and particularly preferably 1.05 or more and 1.1 or less.
For example, if the reciprocating distance a of the separation membrane module 700 is 100mm and the length Lo of the minimum separation membrane, that is, the vertical distance between the upper frame 710 and the lower frame 720 is 500mm, it is preferable that the length Lf of the maximum separation membrane is 538.5mm and the degree of slack is 1.08 (precisely, 1.077) by the triangular nature as shown in fig. 26. However, in this case, when the reciprocating distance is 150mm, the length Lf of the maximum separation membrane is 583.1mm, and the degree of relaxation is about 1.17 (precisely, 1.166), which is more than 1.1, and thus is not preferable. At this time, the reciprocating distance can be reduced or the length of the minimum separation membrane can be increased.
Further, when the reciprocating distance of the separation membrane module 700 is 100mm, the calculated length Lf of the maximum separation membrane is 776.2mm and the degree of relaxation thereof corresponds to 1.03 when the length Lo of the minimum separation membrane is 750mm, and the calculated length Lf of the maximum separation membrane is 1019.8mm and the degree of relaxation thereof corresponds to about 1.02 when the length Lo of the minimum separation membrane is 1000mm, which is preferable.
However, when the reciprocating distance of the separation membrane module 700 is 100mm as described above, if the length Lo of the minimum separation membrane is 1500mm, the calculated length Lf of the maximum separation membrane is 1513.3mm, and the degree of slack is close to 1, so that it is difficult to impart inertia to the separation membrane, which is not preferable, and in this case, the reciprocating distance of the separation membrane module 700 should be further increased or the length Lo of the minimum separation membrane should be decreased.
As described above, in the process of reducing or removing the contamination of the separation membrane by the reciprocation, the degree of slack of the separation membrane module 700 is very important, and a length adjusting part for adjusting the degree of slack of the separation membrane module 700 according to the reciprocation distance of the membrane filtration system may be further included.
The length adjusting part may be formed to adjust the length of the minimum separation membrane, i.e., the length between the upper frame 710 and the lower frame 720, and may also be formed to adjust the length of the separation membrane itself, which will be described in detail in the following embodiments.
First, referring to fig. 26, the length adjuster 740 of the first embodiment is described, and the length adjuster 740 is configured to vertically drive the sub-frame 620 of the membrane support frame fixed to the lower frame 720, which is one side of the separation membrane module 700, in order to adjust the length between the upper frame 710 and the lower frame 720.
Specifically, the length adjuster 740 of the first embodiment may be formed of a hydraulic cylinder 742 formed below the sub-frame 620, and the hydraulic cylinder 742 may be fixed to the lower side of the sub-frame 620 by bolt fastening or welding.
The hydraulic cylinder 742 may be formed at a lower portion of the sub-frame 620, and may be disposed at an appropriate position according to the number. In the present embodiment, 4 hydraulic cylinders 742 are disposed at the respective vertex positions of the sub frame 620 having a rectangular shape.
Accordingly, when the user drives the hydraulic cylinder 742, the lower frame 720 of the separation membrane module integrally moves in the vertical direction along with the vertical movement of the entire sub-frame 620 in a state where the upper frame 710 of the separation membrane module is fixed, thereby adjusting the length of the minimum separation membrane. That is, when the sub-frame 620 is moved upward by driving the hydraulic cylinder 742 while the length of the separation membrane is maintained, the lower frame 720 is also moved upward to reduce the distance from the upper frame 710, thereby reducing the length of the minimum separation membrane and increasing the slack of the separation membrane module 700.
On the other hand, when the sub-frame 620 is moved downward by driving the hydraulic cylinder 742, the lower frame 720 is also moved downward to increase the distance from the upper frame 710, thereby increasing the length of the minimum separation membrane and reducing the slack of the separation membrane module 700.
In this case, although the operation of the hydraulic cylinder 742 may be performed by a user, the operation of the hydraulic cylinder may be automatically controlled by a calculation unit 744 and a driving unit 746, the calculation unit 744 calculates a length of a minimum separation membrane suitable for a desired degree of slack of the separation membrane based on a reciprocating distance or a reciprocating period of the separation membrane, calculates a vertical movement amount of the sub frame 620, and the driving unit 746 transmits the calculated vertical movement amount to the hydraulic cylinder 742 for driving.
Next, referring to fig. 27, a length adjustment part 1740 according to a second embodiment is described, and in order to adjust the length between the upper frame 710 and the lower frame 720, the length adjustment part 1740 is configured to vertically drive the position of the lower frame 720, that is, the sub-frame 620 of the membrane support frame to which the lower frame 720 is fixedly installed, in a state where the upper frame 710 of the separation membrane module is fixed, in the same manner as the first embodiment.
Specifically, the above-described length adjustment portion 1740 of the second embodiment may include: a shaft 1742 provided below the sub-frame 620; one or more cams 1744 coupled to the shaft 1742 to be integrally rotatable; and a motor 1746 for rotating the shaft 1742. The motor 1746 may be installed inside the processing bath 300, but may be installed outside.
The plurality of shafts 1742 may be formed in plurality in parallel at the lower portion of the sub-frame 620, and in the present embodiment, 2 shafts are formed in opposite directions in parallel so as to be aligned with the corners of the sub-frame 620. One or more cams 1744 are coupled to the respective shafts in such a manner as to be integrally rotated according to the rotation of the shafts 1742. As the cam 1744 rotates, the radius length of the cam is changed, so that the height of the lower frame 620 can be adjusted.
In this case, although the operation of the motor 1746 may be performed by a user, the operation may be automatically performed by including a calculating unit for calculating the vertical movement amount of the sub frame 620 and a driving unit for transmitting the calculated vertical movement amount to the motor 1746 to control the rotation of the shaft 1742, as in the first embodiment.
Also, although not shown, according to an embodiment, the length adjusting part may be formed to adjust the length of the separation membrane itself, and specifically, a winding part for winding and unwinding one end of the separation membrane module, that is, one end of the hollow fiber membranes may be formed to wind or unwind one end of the separation membrane module, thereby adjusting the length of the entire separation membrane module.
According to an embodiment, the present invention may further include an interval measuring unit 810 and an interval adjusting device 820, which are described in detail in the following embodiments.
First embodiment
Fig. 16a and 16b are diagrams showing an example of the interval measuring unit of the present invention.
Referring to fig. 16a and 16b, the interval measuring unit 810 according to the present invention may measure an interval between the film support frame 600 or the blade member 410 and the processing bath 300.
The interval measuring means 810 may include a first interval measuring sensor 811 and a second interval measuring sensor 813, the first interval measuring sensor 811 may be a sensor for measuring an interval between the membrane support frame 600 and the inner wall of the processing bath 300, and the second interval measuring sensor 813 may be a sensor for measuring an interval between the blade member 410 and the bottom of the processing bath 300.
Referring to fig. 16a, the first gap measuring sensors 811 are disposed in a pair on both sides of the membrane support frame 600, and measure the gap between the membrane support frame 600 and the inner wall of the processing bath 300.
When the distance measured by the sensor on either side is relatively smaller than the distance measured by the sensor on the other side, or when the distance is smaller than the set allowable distance value, the first distance measuring sensor 811 transmits a signal to the controller of the user, and at this time, the user stops the driving of the shuttle 200 and then sets the left and right positions of the film support frame 600 connected to the shuttle frame 250 by fastening a bolt or the like again, thereby preventing the collision with the inner wall of the processing bath 300.
As can be seen from fig. 16b, the second gap measuring sensor 813 is disposed at the floating wing 413 portion of the blade member 410. As the membrane support frame 600 reciprocates, the blade member 410 also reciprocates, and at this time, the vertical position of the upper floating wing 413 may be changed by various vibrations, or the like.
At this time, the second interval measuring sensor 813 measures the interval with the bottom of the processing bath 300, and when the interval is smaller than the set allowable interval value, a signal is transmitted to the controller of the user, and the user stops the driving of the shuttle 200. Thereafter, the vertical position of the film support frame 600 connected to the shuttle frame 250 by means of bolt fastening or the like is set again to prevent the floating wing from colliding with the bottom of the processing bath 300.
Second embodiment
Fig. 17 is a plan view showing an embodiment of the interval adjusting means of the present invention. Fig. 18 is a partial side view of the first interval adjustment part of the invention shown in fig. 17. Fig. 19 is a side view illustrating a second interval adjustment part of the invention shown in fig. 17. Fig. 20 is a side sectional view showing the linkage of the sludge floating device and the second interval adjusting part of the invention shown in fig. 19. Fig. 21 is a rear view showing the linkage between the sludge floating device and the second interval adjusting part according to the invention shown in fig. 20.
Referring to fig. 17 to 21, the interval adjusting device 860 of the present invention may adjust an interval between the membrane supporting frame 600 or the sludge floating device 420 and the treating tank 300. The interval adjusting means 860 may include: a first interval adjusting part 820 for adjusting an interval between the film supporting frame 600 and an inner wall of the processing bath 300; and a second interval adjusting part 850 for adjusting an interval between the sludge floating device 420 and the bottom of the treatment tank 300.
First, the first interval adjusting part 820 may include an adjusting cylinder 821, a moving unit 820a, a first non-contact sensor 829, a first interval calculating part 828, a first oil pressure amount calculating part 827, and a first driving part 826. Referring to fig. 17, in the embodiment of the present invention, 2 film support frames 600 are connected to the shuttle frame 250, and the adjusting cylinder 821 may be disposed between the pair of film support frames 600 at the upper end of the shuttle frame 250.
The moving unit 820a may be connected to a rod of the adjusting cylinder 821, support the film supporting frame 600, and move in a width direction of the reciprocating frame 250. The mobile unit 820a may include a moving track 825 and a moving block 822.
Referring to fig. 18, the moving rail 825 may be disposed along the width direction of the reciprocating frame 250, and the moving block 822 may include a moving wheel 823 for moving along the moving rail 825, and may be connected to the membrane supporting frame 600 through a support beam 824.
The first non-contact sensor 829 may be disposed at a side of the film support frame 600, and the first interval calculator 828 may measure an interval between the film support frame 600 and an inner wall of the processing bath 300 by a signal transmitted from the first non-contact sensor 829.
The first hydraulic pressure calculation unit 827 converts the calculated value of the first interval calculation unit 828 into a hydraulic drive value and transmits the hydraulic drive value to the first drive unit 826. The first driving unit 826 can drive the adjustment cylinder 821 according to the hydraulic driving value of the first hydraulic pressure calculation unit 827.
For example, if the distance between the inner wall of the processing tank 300 and the membrane support frame 600 does not reach the set allowable distance value, the first non-contact sensor 829 transmits information to the first distance calculation section 828, and the first distance calculation section 828 calculates the distance and then transmits the information to the first oil pressure amount calculation section 827, so that the first oil pressure amount calculation section 827 calculates the required oil pressure driving value.
When the calculation is completed, the information is transmitted to the hydraulic drive unit, and the adjustment cylinder 821 moves the moving block 822 forward or backward by a required degree. Thereby, the moving block 822 moves along the moving track 825, adjusting the position of the membrane support frame 600.
At this time, a side block is disposed at the shuttle frame 250 to assist the support of the membrane support frame 600. Referring to fig. 17, first side blocks are disposed at 4 corners of the shuttle frame 250, and are similarly connected to the membrane support frame 600 by the support beams 832 for support.
At this time, the protrusion 831a of the first side block may be disposed to contact the linear bearing 833 to smoothly linearly move at the second side block 834, and the user may fasten the fixing cover 835 by the bolt 836. In this case, 4 pieces a are arranged on the shuttle frame 250, and each support the movement of the film support frame 600 in the width direction by the adjustment cylinder 821.
Thereafter, the second interval adjusting unit 850 may include a second non-contact sensor 851, a second interval calculating unit 852, a second oil pressure calculating unit 853, and a second driving unit 854.
The second non-contact sensor 851 is disposed on the upper float 480 and measures the distance between the upper float 480 and the bottom of the processing bath 300. The second gap calculator 852 calculates a gap between the upper float 480 and the bottom of the processing bath 300 based on a signal transmitted from the second non-contact sensor 851.
The second hydraulic amount calculation unit 853 may convert the calculated value of the second interval calculation unit 852 into a hydraulic driving value. The second driving unit 854 may drive the hydraulic cylinder 431 according to the hydraulic driving value of the second hydraulic amount calculation unit 853.
For example, the second non-contact sensor 851 measures the distance between the upper float 480 and the bottom of the processing bath 300, and transmits a signal to the second distance calculator 852 when the distance cannot reach a preset allowable distance value. The second interval calculator 852 calculates an interval between the upper float 480 and the bottom of the processing tank 300 from a signal transmitted from the second non-contact sensor 851 and transmits the value to the second hydraulic pressure calculator 853, and then the second hydraulic pressure calculator 853 converts the value into a hydraulic drive value and applies a signal to the second driver 854.
Accordingly, the second driving unit 854 drives the hydraulic cylinder 431 to adjust the vertical position of the second vane body 441. When the position of the second blade body 441 moves in the upward direction, the third blade body 470 and the floating wing 480 connected to the lower end of the second blade body 441 also move in the upward direction to adjust the interval.
As described above, in the embodiment of the present invention, the first interval adjusting unit 820 and the second interval adjusting unit 850 calculate the interval between the membrane support frame 600 or the sludge floating device 420 and the treatment tank 300, and automatically readjust the interval when the interval cannot reach the set allowable interval range, thereby preventing the reduction of the operation efficiency of the facility and the damage of the facility due to the collision between the facilities.
Hereinafter, the filtrate discharge unit according to the present invention will be described in detail with reference to examples. The filtrate discharge part has a structure for recovering the filtrate treated by the separation membrane module 700 to the outside, and includes a flexible tube, so that the filtrate discharge part is not damaged even if the separation membrane module 700 reciprocates, and the filtrate can be simply recovered.
First embodiment
First, a filtrate discharge unit 900 according to the first embodiment will be described with reference to fig. 28. This embodiment is based on the arrangement structure of the membrane support frame and the separation membrane module applied to the first embodiment shown in fig. 23.
The filtrate discharge unit 900 may include a water collecting pipe 920, a first recovery pipe 940, and a second recovery pipe 960.
As shown in fig. 23, when a plurality of separation membrane modules 700 are disposed inside the membrane support frame 600, sewage (or sewage) may be filtered from the outside to the inside through the hollow fiber membranes 730 of the respective separation membrane modules and collected in the water collection part 711 of the upper frame.
At least one discharge hole 714 may be formed in an upper side of each upper frame 710, and the water collecting pipe 920 communicates with the water collecting part 711 of each separation membrane module through the discharge hole 714. That is, the water collecting pipe 920 is provided to pass through the plurality of separation membrane modules 700 and communicate with the water collecting parts 711, so that the filtrate collected in the water collecting parts 711 can be collected in one water collecting pipe 920.
In the present embodiment, the water collecting pipe 920 communicates with each water collecting part 711 through one discharge hole 714 formed at the center of each upper frame 710, and one water collecting pipe is formed based on the membrane supporting frame 600, but the present invention is not limited thereto, and a plurality of discharge holes may be formed at an upper side according to the length of the upper frame 710, and a plurality of water collecting pipes 920 may be provided.
In order to collect the filtrate collected in the water collecting pipe 920 to the outside, the water collecting pipe 920 may be coupled to one or more first collecting pipes 940, and in this embodiment, 2 first collecting pipes 940 may be coupled to both ends of the water collecting pipe 920. The first recovery pipe 940 is formed of a rigid pipe, and may have an S-shape or a straight shape.
Thereafter, the first recovery pipes 940 are respectively connected to second recovery pipes 960, and the second recovery pipes 960 are characterized by being flexible pipes. Accordingly, even if the separation membrane module 700 reciprocates, the filtrate discharge unit 900 is not damaged, and the filtrate can be easily collected.
The second recovery pipe 960 may be connected to a suction pump (not shown) for sucking inflow water from the outside of the hollow fiber membrane 730 to the inside thereof and filtering the inflow water, and the filtrate recovered through the second recovery pipe 960 may be stored in another tank (not shown) by suction.
That is, the filtrate, which flows into the inside from the outside of the hollow fiber membranes 730 of the separation membrane module and is filtered, is first collected in the water collection part 711 of the upper frame 710, and the filtrate collected in the water collection parts 711 is collected in one water collection pipe 920 again and is collected to the outside through the first recovery pipe 940 and the second recovery pipe 960.
In the present embodiment, the rigid first recovery pipe and the flexible second recovery pipe connected to the water collecting pipe are separately formed, but the flexible pipe may be directly connected to the water collecting pipe.
Second embodiment
Next, a filtrate discharge portion 1900 of the second embodiment will be described with reference to fig. 29. This embodiment is based on the arrangement structure of the membrane support frame and the separation membrane module applied to the second embodiment shown in fig. 24.
The filtrate discharge part 1900 may include a first recovery pipe 1940 and a second recovery pipe 1960.
As shown in fig. 24, the membrane support frame 600 includes a filtration pipe 640 formed at the upper center portion, and a plurality of separation membrane modules 700 are coupled to both sides of the filtration pipe 640. At this time, the upper frames 710 of the respective separation membrane modules are inserted into and coupled to the coupling holes 642 formed in the filtration pipes 640, so that the filtrates collected in the respective water collecting parts 711 are collected in one filtration pipe 640.
In order to collect the filtrate collected in the filtering pipe 640 to the outside, the filtering pipe 640 may be coupled to one or more first recovery pipes 1940, and in this embodiment, both ends of the filtering pipe 640 in the longitudinal direction are coupled to 2 first recovery pipes 1940. The first recovery pipe 1940 is formed of a rigid pipe, and may have an S-shape or a straight shape.
Thereafter, the first recovery pipes 1940 are connected to second recovery pipes 1960, respectively, and the second recovery pipes 1960 are characterized in that they are flexible pipes. Accordingly, even if the separation membrane module 700 reciprocates, the filtrate discharge part 1900 is not damaged, and the filtrate can be easily collected.
The second recovery pipe 1960 may be connected to a suction pump (not shown) as in the first embodiment, and the filtrate recovered through the second recovery pipe 1960 may be stored in another tank (not shown) by suction.
That is, the filtrate, which flows into the inside from the outside of the hollow fiber membranes 730 of the separation membrane module and is filtered, is first collected in the water collection part 711 of the upper frame 710, and the filtrate collected in the water collection parts 711 is collected in one filtration pipe 640 again and is collected to the outside through the first recovery pipe 1940 and the second recovery pipe 1960.
In the present embodiment, the rigid first recovery pipe and the flexible second recovery pipe connected to the filtration pipe are separately configured, but the flexible pipe may be directly connected to the filtration pipe.
Next, with reference to fig. 30 to 33, a structure in which a plurality of film support frames 600 are provided inside the processing bath 300 will be described according to each embodiment.
A plurality of membrane support frames 600 are generally disposed inside the treatment tank 300 according to the filtering capacity of sewage (or sewage). In this case, the plurality of membrane support frames 600 may be arranged in a row long or in a plurality of rows according to the floor space.
Hereinafter, each embodiment will be described with reference to a case where 10 film support frames 600 are provided in the processing bath 300.
First embodiment
According to the first embodiment, 10 membrane support frames 600 are arranged in a row inside the above-described processing bath 300, and are connected to one reciprocating means 200 to be integrally reciprocated.
This is applicable when the treatment tank 300 is installed in a long space but has a small margin in width.
As described above, the shuttle 200 may include the shuttle frame 250 and the driving part 205, and the shuttle 250 is connected to the membrane support frame 600 and reciprocates the membrane support frame.
Specifically, the shuttle frame 250 is connected to the film support frame 600 and supports the film support frame 600, and the driving unit 205 is disposed in the processing bath 300 and connected to one side of the shuttle frame 250 to move the shuttle frame 300.
In this embodiment, the 10 membrane support frames 600 are connected to one shuttle 200, and thus the 10 membrane support frames 600 are arranged in a row inside one shuttle 250. In this case, the 10 membrane support frames 600 may be connected to each other and disposed in a row inside the shuttle frame 250 having one frame, but as shown in fig. 30, the shuttle frame 250 may be formed to have compartments corresponding to the number of the membrane support frames 600 to be disposed, that is, 10 compartments in the present embodiment, whereby the membrane support frames 600 may be disposed in the respective compartments. Thus, in the case where the membrane support frame 600 is damaged or has a problem, it can be replaced separately, and the installation becomes simpler.
According to the present embodiment, since one reciprocating device 200 is required to reciprocate the plurality of membrane support frames 600, a large driving force is required.
Second embodiment
According to the second embodiment, 10 membrane support frames 600 are arranged in a row inside the above-described processing bath 300, and are divided into 5 pieces on both sides and connected to the shuttle 200, respectively. Thereby, the membrane support frames 600 divided in such a manner that 5 each on both sides can individually reciprocate. That is, the membrane support frames 600 on both sides may reciprocate in the same direction or may reciprocate in different directions.
This is the same as the first embodiment, and can be applied when the treatment tank 300 is installed in a long space with a small margin in width.
Specifically, in this embodiment, the 10 membrane support frames 600 are divided into 2 groups on both sides and are respectively connected to one shuttle 200, and therefore, the shuttle 200 is respectively disposed on both sides of the processing bath 300, and 5 membrane support frames 600 are arranged in a row inside one shuttle 250.
At this time, the 5 membrane support frames 600 may be connected to each other and disposed in a row inside the shuttle frame 250 having one frame, but as shown in fig. 31, the shuttle frame 250 may be formed to have compartments corresponding to the number of the membrane support frames 600 to be disposed, that is, in the present embodiment, to have 5 compartments, thereby disposing the membrane support frames 600 in the respective compartments. Thus, in the case where the membrane support frame 600 is damaged or has a problem, it can be replaced separately, and the installation becomes simpler.
In this embodiment, instead of integrally reciprocating 10 membrane support frames by one reciprocating device as in the first embodiment, 5 membrane support frames 600 are divided and connected to the reciprocating device 200, respectively, so that the groups of 5 membrane support frames 600 are reciprocated in opposite directions at intervals without applying a large driving force to generate vortices, thereby achieving a sludge floating effect.
Third embodiment
According to the third embodiment, 10 membrane support frames 600 may be arranged in the inside of the above-described processing bath 300 in such a manner that 5 membrane support frames per column are divided into 2 columns, and connected to one shuttle 200 to be integrally reciprocated.
This is applicable when the width of the floor space in which the processing bath 300 is installed is wide but the length is not so large.
Specifically, in the present embodiment, the 10 membrane support frames 600 are connected to one shuttle 200, and thus, the 10 membrane support frames 600 are arranged in 2 rows side by side inside one shuttle 250.
At this time, the 10 membrane support frames 600 may be continuously disposed inside the shuttle frame 250 having one frame in a state of dividing 2 columns by 5 columns, but as shown in fig. 32, the shuttle frame 250 may be formed to have compartments corresponding to the number of the membrane support frames 600 to be disposed, that is, in the present embodiment, 10 compartments in total are formed by dividing 2 columns by 5 columns, thereby disposing the membrane support frames 600 in the respective compartments. Thus, in the case where the membrane support frame 600 is damaged or has a problem, it can be replaced alone, and the setup becomes simple.
According to the present embodiment, since it is necessary to reciprocate the plurality of membrane support frames 600 by one reciprocation device 200, a large driving force is required.
Fourth embodiment
According to the fourth embodiment, 10 membrane support frames 600 are arranged in the inside of the above-described processing tank 300 in such a manner that 5 membrane support frames are divided into 2 columns per column, and each column is connected to a respective shuttle 200. Thereby, the respective rows of the membrane support frame 600 groups can be individually reciprocated. That is, the groups of the membrane support frames 600 of each column may reciprocate in the same direction, but may also reciprocate in different directions.
The present invention can be applied to a case where the width of the floor space in which the processing bath 300 is installed is wide but the length is not so large as in the third embodiment.
Specifically, in the present embodiment, the 10 membrane support frames 600 are divided into 2 rows and are respectively connected to one shuttle 200, and thus, the 2 shuttles 200 are arranged side by side at one side of the processing bath 300, and every 5 membrane support frames 600 are arranged in one row inside one shuttle 250.
At this time, the 5 membrane support frames 600 may be connected and disposed in a row inside the shuttle frame 250 having one frame, but as shown in fig. 33, the shuttle frame 250 may be formed to have compartments corresponding to the number of the membrane support frames 600 to be disposed, that is, in the present embodiment, to have 5 compartments, thereby disposing the membrane support frames 600 in the respective compartments. Thus, in the case where the membrane support frame 600 is damaged or has a problem, it can be replaced separately, and the installation becomes simpler.
In this embodiment, instead of integrally reciprocating 10 membrane support frames by one reciprocating device as in the third embodiment, 5 membrane support frames 600 per row are connected to the reciprocating device 200, and the groups of membrane support frames 600 in each row are reciprocated in opposite directions at intervals to generate vortices without applying a large power, thereby achieving the effect of floating sludge.
Further, as the respective rows reciprocate in different directions, vibration generated by the reciprocating motion is cancelled, and vibration generated in the processing bath 300 is reduced and stabilized.
The control unit 1000 according to the present invention and a method for controlling a membrane filtration system using the same are described below.
The membrane filtration system of the present invention may further include a control part 1000 capable of controlling the reciprocating distance or the number of vibrations of the above-described separation membrane module 700.
The control part 1000 may adjust a reciprocating distance or a vibration number of the separation membrane in the separation membrane module 700 according to an operation condition, a degree of contamination of the separation membrane module, and the like, and in this embodiment, the control part 1000 may include: a contamination measuring unit 1200 for measuring the degree of contamination of the separation membrane module 700; and an adjustment control unit 1400 for controlling the reciprocating distance or the number of vibrations of the separation membrane module 700 based on the degree of contamination measured by the contamination measuring unit 1200.
The contamination measuring unit 1200 can measure the degree of contamination of the separation membrane module 700 by measuring the transmembrane differential pressure (TMP) of the separation membrane. In the membrane filtration system of the present invention, the degree of contamination of the separation membrane module 700 measured at the initial operation or the operation after the back flush (bachwash) is expected to be low, and the degree of contamination of the separation membrane module 700 measured after the filtration is performed for a relatively long time is expected to be high.
Accordingly, the adjustment control part 1400 may increase the number of vibrations of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 increases, and the adjustment control part 1400 may decrease the number of vibrations of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 decreases. That is, the reciprocating period of the separation membrane module 700 is decreased as the degree of contamination becomes higher, and the reciprocating period of the separation membrane module 700 is increased as the degree of contamination becomes lower.
When the number of vibrations of the separation membrane module 700 is increased, the separation membrane reciprocates at a faster speed, and the inertia applied to the separation membrane is further increased, whereby contaminants adhering to the separation membrane can be separated and removed.
Simply, since the energy consumption amount is increased by increasing the number of vibrations, the energy consumption amount can be appropriately adjusted according to the degree of fouling of the separation membrane module 700, and thus the effect of removing fouling (fouling) of the separation membrane due to the reciprocating motion can be obtained while reducing the energy consumption amount.
At this time, the separation membrane module 700 reciprocates together with the membrane support frame 600 on which the separation membrane module 700 is mounted and the shuttle frame 250 supporting the membrane support frame 600, so that the separation membrane module 700 can be adjusted by adjusting the reciprocating distance and the number of vibrations (cycles) of the shuttle frame 250.
Accordingly, the adjustment control part 1400 may be connected to the reciprocation device 200 to control the speed of the motor 210 for transmitting power.
In this embodiment, the separation membrane module 700 may be set to reciprocate at 0.5Hz, and may be adjusted to 1Hz according to the degree of contamination of the separation membrane. However, if the number of vibrations exceeds 1Hz, the energy consumption increases, and the structure of the membrane filtration system is damaged, which is not preferable.
Also, the adjustment control part 1400 may increase the reciprocating distance of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 increases, and the adjustment control part 1400 may decrease the reciprocating distance of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 decreases.
That is, when the number of vibrations is maintained to be the same, if the reciprocating distance of the separation membrane module 700 is increased, the speed of the reciprocating motion of the separation membrane becomes fast, thereby exhibiting an effect similar to the increase of the number of vibrations, and if the number of vibrations is excessively high, the structure of the system is damaged by the vibrations caused by the reciprocating motion, so that the reciprocating distance can be increased.
When the reciprocating distance of the separation membrane module 700 is increased, the separation membrane reciprocates at a faster speed, and the inertia applied to the separation membrane is further increased, whereby contaminants attached to the separation membrane can be separated and removed.
At this time, the separation membrane module 700 reciprocates together with the membrane support frame 600 and the shuttle frame 250, and thus the reciprocating distance of the separation membrane module 700 can be adjusted by adjusting the reciprocating distance of the shuttle frame 250. Accordingly, the adjustment control part 1400 is connected to the shuttle 200 to adjust the reciprocating distance of the reciprocating frame 250.
Specifically, as described above, the driving unit 205 includes the motor 210, the first pulley 211, the second pulley 213, the rotor 230, and the link 220, the motor 210 and the rotor 230 are rotatably connected by the first pulley 211 and the second pulley 213, and the link 220 is connected between the rotor 230 and the reciprocating frame 250, so that the rotational motion can be converted into the reciprocating motion.
At this time, a plurality of links 233 connected to the link 220 are formed at the rotor 230, so that the reciprocating distance of the reciprocating frame 250 can be adjusted by changing the links 233 connected to the link 220 and the rotor.
That is, in the case where the adjustment control part 1400 needs to increase the reciprocating distance of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 increases, the connecting rod 220 is connected to the connecting member 233b having a relatively large interval from the center of the rotor 230, thereby increasing the reciprocating distance of the reciprocating frame 250.
On the contrary, in case that the adjustment control part 1400 needs to reduce the reciprocating distance of the separation membrane module 700 as the contamination degree of the separation membrane module 700 becomes lower, the connecting rod 220 is connected to the connecting member 233a having a relatively small interval from the center of the rotor 230, thereby reducing the reciprocating distance of the reciprocating frame 250.
Further, the link 220 may include: a connecting rod body 221; a first connection hole 223 disposed at one side of the link body 233 and coupled to the rotor connection member 233; and a second connection hole 225 disposed at the other side of the link body 221 and coupled to the shuttle frame 250, wherein the first connection hole 223 may be formed in a plurality along the longitudinal direction of the link body 221.
Accordingly, if the position of the first coupling hole 223 of the link coupled to the coupling member 223 of the rotor is changed, the reciprocating distance of the reciprocating frame 250 can be adjusted.
That is, in case that the adjustment control part 1400 needs to increase the distance of the forward movement of the separation membrane module 700 as the degree of contamination of the separation membrane module 700 becomes higher, the link 233 of the rotor is fastened to the first connection hole 223b of the link 220 relatively distant from the second connection hole 225, thereby increasing the reciprocating distance of the reciprocating frame 250.
On the contrary, in case that the adjustment control part 1400 needs to reduce the reciprocating distance of the separation membrane module 700 as the contamination degree of the separation membrane module 700 becomes lower, the link 233 of the rotor is fastened to the first connection hole 223a of the link 220 relatively close to the second connection hole 225, thereby reducing the reciprocating distance of the reciprocating frame 250.
Also, according to an embodiment, the adjustment control part 1400 may control to increase the number of vibrations at the time of back washing (back wash) of the separation membrane module 700. In the present embodiment, the vibration number may be controlled to be increased to 0.7Hz upon the back washing of the above-described separation membrane module 700, whereby the washing efficiency may be improved.
The above matters are merely representative of particular embodiments of the membrane filtration system.
Therefore, the present invention is not limited to the specific embodiments and descriptions, and various modifications can be made by those skilled in the art without departing from the spirit of the invention claimed in the claims.
Claims (9)
1. A membrane filtration system, characterized in that,
the method comprises the following steps:
a treatment tank;
a membrane support frame disposed in the processing tank;
a separation membrane module mounted on the membrane support frame;
a reciprocating device connected to the membrane support frame to reciprocate the membrane support frame; and
a sludge floating part which is arranged at the lower end of the membrane supporting frame and floats the sludge accumulated in the treatment tank,
the separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane disposed between the upper frame and the lower frame,
the upper frame and the lower frame include a space maintaining part formed to protrude from the frames to maintain a certain space between the separation membrane modules.
2. The membrane filtration system of claim 1,
a water collecting part is formed inside the upper frame, and the water collecting part is communicated with the hollow part of the hollow fiber membrane.
3. The membrane filtration system of claim 1,
the space maintaining portion includes a coupling portion for coupling with another space maintaining portion facing each other.
4. The membrane filtration system of claim 1,
the hollow fiber membranes are arranged to form a plurality of bundles with the respective bundles of hollow fiber membranes spaced apart from each other.
5. Membrane filtration system according to claim 1 or 2,
the separation membrane module is provided in plurality in parallel in the membrane support frame.
6. Membrane filtration system according to claim 1 or 2,
further comprises a filter piping disposed in the membrane support frame,
the plurality of separation membrane modules are connected in parallel to the filtration pipe.
7. Membrane filtration system according to claim 6,
the filter pipe is formed with a plurality of coupling holes, one end of the upper frame is inserted into the coupling holes, and the water collecting part and the filter pipe are coupled in a state of being communicated with each other.
8. Membrane filtration system according to claim 7,
the filtration piping is disposed at an upper center portion of the membrane support frame, and the plurality of separation membrane modules are coupled to both sides of the filtration piping in parallel and symmetrically.
9. Membrane filtration system according to claim 6,
the filter pipe is disposed perpendicular to the direction in which the membrane support frame reciprocates.
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| KR10-2016-0162324 | 2016-11-30 | ||
| KR1020160162324A KR101902638B1 (en) | 2016-11-30 | 2016-11-30 | Membrane filtration system |
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| CN108114606A CN108114606A (en) | 2018-06-05 |
| CN108114606B true CN108114606B (en) | 2021-02-19 |
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| CN113477092A (en) * | 2021-07-13 | 2021-10-08 | 碧水源膜技术研究中心(北京)有限公司 | Hollow fiber membrane filtering set for vibration and filtering method |
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| KR20180062259A (en) | 2018-06-08 |
| CN108114606A (en) | 2018-06-05 |
| KR101902638B1 (en) | 2018-09-28 |
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