WO2010056011A2 - 여과 시스템 및 그 방법 - Google Patents
여과 시스템 및 그 방법 Download PDFInfo
- Publication number
- WO2010056011A2 WO2010056011A2 PCT/KR2009/006478 KR2009006478W WO2010056011A2 WO 2010056011 A2 WO2010056011 A2 WO 2010056011A2 KR 2009006478 W KR2009006478 W KR 2009006478W WO 2010056011 A2 WO2010056011 A2 WO 2010056011A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- cleaning
- heating
- pipe
- heater
- Prior art date
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000004140 cleaning Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000012528 membrane Substances 0.000 claims description 152
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 69
- 239000012530 fluid Substances 0.000 claims description 9
- 238000011084 recovery Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 12
- 239000012510 hollow fiber Substances 0.000 description 70
- 239000000126 substance Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000012466 permeate Substances 0.000 description 7
- 238000007654 immersion Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910019093 NaOCl Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/20—Accessories; Auxiliary operations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/10—Temperature control
- B01D2311/103—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/10—Temperature control
- B01D2311/103—Heating
- B01D2311/1031—Heat integration, heat recovery or reuse within an apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/22—Cooling or heating elements
-
- 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
- B01D2321/18—Use of gases
- B01D2321/185—Aeration
Definitions
- the present invention relates to a filtration system and a method thereof, and more particularly, by intensively heating only a portion of a filtration membrane during the maintenance or recovery cleaning of the filtration membrane, maximizing the cleaning effect, minimizing the heat energy required for the cleaning, and reducing the cleaning time.
- the present invention relates to a filtration system and a method thereof that can be significantly shortened.
- the separation method using a filtration membrane has many advantages over the separation method using heating at a high temperature or a phase change.
- One of the biggest advantages is that the desired water quality can be stably obtained according to the pore size of the filtration membrane, thereby increasing the reliability of the process. Can be.
- the use of a filtration membrane does not require an operation such as heating at a high temperature, when the filtration membrane is used in a separation process using microorganisms, the microorganisms can be prevented from being affected by heat.
- One of the filtration membrane modules is an inhalation type that separates solid components such as impurities or sludge by immersing the filtration membrane module directly in a water tank of a fluid to be treated and applying a negative pressure to the inside of the filtration membrane to selectively permeate only the fluid into the filtration membrane.
- a filtration membrane module Manufacturing the filtration device by using the suction filtration membrane module has the advantage that it does not need the equipment for the circulation of the fluid, which can bring down the facility cost or operating cost, while the disadvantage that the permeate flow rate that can be obtained in a unit time is limited.
- the maintenance cleaning is a cleaning performed for a while while the water treatment by the filtration membrane module is in progress or in the state in which the water treatment is stopped.
- the main purpose is to maintain the permeation performance of the filtration membrane in a good state.
- This maintenance cleaning is mainly performed by physical cleaning. Physical cleaning can be categorized into backwashing and aeration schemes.
- the backwashing method is a cleaning method that removes foreign matter adhering to the membrane surface by refluxing air or water through the filtration membrane while the water treatment is temporarily stopped.
- the acid method generates air under the membrane to cause the air bubbles to rise, thereby removing foreign substances adhering to the surface of the filtration membrane by the air bubbles themselves, as well as causing the rising or circulation of water contained in the water treatment tank.
- recovery washing is a washing performed for a long time when membrane contamination accumulates as the membrane permeation performance of the filtration membrane module is seriously degraded as the water treatment proceeds for a long time in the water treatment tank, and the main purpose is to restore the permeation performance of the filtration membrane. There is this.
- recovery cleaning is performed by chemical cleaning with an acidic solution such as HCl, HNO 3 or citric acid and / or a basic solution such as NaOH or NaOCl.
- acidic solution such as HCl, HNO 3 or citric acid and / or a basic solution such as NaOH or NaOCl.
- recovery cleaning is performed by chemical cleaning of the filtration membrane module by sequentially supplying base and acid to the water treatment tank after the raw water filled in the water treatment tank is completely discharged. Flushing of the filtration membrane module may be performed before the above chemical cleaning.
- the recovery cleaning may also be performed in a separate cleaning bath.
- the effect of maintenance and recovery cleaning is related to the temperature of the surface of the filtration membrane. In other words, as the surface temperature of the filtration membrane increases, the cleaning effect is better. Therefore, it is desirable to increase the surface temperature of the filtration membrane during the maintenance and recovery of the filtration membrane. Increase the effect of maintenance cleaning by heating raw water to be treated to a certain temperature and then supplying it to the membrane module, or increasing the effect of recovery cleaning by heating the chemical cleaning solution for recovery cleaning to a temperature and then supplying it to the filter membrane module. You can.
- the present invention relates to a filtration system and method which can avoid the problems caused by the above limitations and disadvantages of the related art.
- One aspect of the present invention is to provide a filtration system and a method capable of maximizing the cleaning effect and minimizing the heat energy required for cleaning by intensively heating only the filter membrane portion during the maintenance or recovery cleaning of the filter membrane.
- Another aspect of the present invention is to provide a filtration system and method capable of dramatically shortening the cleaning time by intensively heating only the filtration membrane portion during maintenance or recovery cleaning of the filtration membrane.
- a membrane module comprising a filtration membrane; Air supply means for cleaning the filtration membrane; And a heater for heating the air provided from said air supply means.
- the step of performing a water treatment using a membrane module comprising a filtration membrane; Providing air for cleaning the filtration membrane; Heating the air; And providing the heated air to the filtration membrane.
- FIG. 1 is a view schematically showing an example of a pressurized hollow fiber membrane module
- FIG. 2 is a schematic view of the filtration system of the present invention using a pressurized hollow fiber membrane module
- FIG. 3 is a view schematically showing an immersion hollow fiber membrane module
- FIG. 4 is a view showing a filtration system of the present invention using an immersion hollow fiber membrane module
- FIG. 5 is a view schematically showing the recovery cleaning of the hollow fiber membrane module is performed by the filtration system of the present invention
- FIG. 6 is a partial block diagram illustrating the operation of a heater according to an embodiment of the present invention.
- Embodiments of the present invention described below illustrate the hollow fiber membrane module as a filtration membrane module in order to explain the technical idea of the present invention, but the present invention is not limited to the hollow fiber membrane module but includes various types of filtration membranes including flat membrane modules. All can be applied to modules.
- the technical idea of the present invention disclosed below collects permeate water only from one end of the hollow fiber membrane, as well as a two-stage collecting method using two headers to collect permeate water from both ends of the hollow fiber membrane. The same applies to the case of the single stage water collecting method using one header.
- FIG. 1 is a view schematically showing an example of a pressurized hollow fiber membrane module
- Figure 2 is a schematic view of the filtration system of the present invention using a pressurized hollow fiber membrane module.
- Pressurized hollow fiber membrane module 10 includes a plurality of hollow fiber membrane (11). Each hollow fiber membrane 11 has a hollow formed therein so that the filtered water can pass from the outer surface side to the inner surface side.
- the plurality of hollow fiber membranes 11 are present in a bundle form arranged in the longitudinal direction.
- At least one end portion of the plurality of hollow fiber membranes 11 is adhesively fixed to the first fixing portion 12. Subsequently, the first fixing part 12 is cut together with the plurality of hollow fiber membranes 11 so that the plurality of hollow fiber membranes 11 have open ends.
- the first fixing part 12 may be made of a thermosetting resin, for example, an epoxy resin, a urethane resin, a silicone rubber, or the like.
- a thermosetting resin for example, an epoxy resin, a urethane resin, a silicone rubber, or the like.
- fillers such as silica, carbon black, carbon fluoride, and the like into these thermosetting resins, the strength of the first fixing portion 12 and reduction of cure shrinkage can be achieved.
- the other end portion of the hollow fiber membrane 11 is fixed to the second fixing portion 13 made of the same or different material as the first fixing portion 12.
- the other end portion of the hollow fiber membrane 11 may not be fixed, in which case the other end portion should be sealed with a thermosetting resin or the like.
- a plurality of openings 13a are formed in the second fixing part 13 so that air for the acid cleaning of the hollow fiber membrane 11 can be uniformly supplied to the hollow fiber membrane.
- the first fixing part 12 on which the plurality of hollow fiber membranes 11 are potted is adhesively fixed to the inner surface of the module case 14 through a sealing agent. Therefore, the filtered water flowing through the hollow fiber membrane 11 and introduced into the hollow and discharged through the open end of the hollow fiber membrane 11 is prevented from being mixed with the raw water.
- Raw water to be filtered is introduced into the module case 14 through the raw water inlet 15.
- the raw water introduced into the module case 14 is pressurized by a pump, and a part of the raw water penetrates the hollow fiber membrane 11 and flows into the hollow of the hollow fiber membrane 11.
- the filtered water that has passed through the hollow fiber membrane 11 is discharged to the outside through the filtered water outlet 16 of the module case 14, and the raw water having a higher concentration of contaminants of solid components due to the filtered water exit (hereinafter, "concentrated” Water ”is discharged to the outside through the brine outlet 17.
- air for cleaning the hollow fiber membrane 11 is introduced into the module case 14 through the air inlet 18.
- raw water to be filtered and air for cleaning the hollow fiber membrane 11 may be introduced into the module case 14 through one inlet 18.
- both the raw water to be filtered and the air for the acid filter cleaning flow toward the hollow fiber membrane 11 through the plurality of openings 13a formed in the second fixing part 13.
- raw water to be filtered is pumped to the hollow fiber membrane module 10 by a raw water supply pump 30 via a circulation tank 20.
- the filtrate which has permeated the hollow fiber membrane 11 in raw water is sent to the filtrate tank 50, and the concentrated water is sent to the recirculation tank 20 again.
- the filtered water stored in the filtrate tank 50 is sent to the hollow fiber membrane module 10 by the backwash pump 60.
- aeration cleaning of the hollow fiber membrane 11 is performed by injecting compressed air into the hollow fiber membrane module 10 through the air inlet 18 using the air supply means 40.
- the air supply means 40 of the present invention may be a blower or an air compressor, but is not limited thereto, and may be in any form as long as it can provide air.
- the air discharged from the air supply means 40 is supplied into the pressurized hollow fiber membrane module 10 through the pipe 45, and the pipe 45 is heated by the heater 70.
- the piping 45 is heated by the heater 70, the air passing through the piping 45 is also heated.
- the heated air is introduced into the pressurized hollow fiber membrane module 10 under the guidance of the pipe 45 to intensively raise the temperature near the hollow fiber membrane 11.
- a temperature difference is generated between the raw water temperature near the hollow fiber membrane 11 and the raw water temperature located elsewhere, and thermal energy can be reduced by the temperature difference.
- the cleaning effect of the hollow fiber membrane 11 shown by feeding raw water heated to 40 ° C. into the hollow fiber membrane module 10 and the raw water at 10 ° C. are fed into the hollow fiber membrane module 10, but the hollow fiber membrane 11 is pressed.
- the heat energy required to selectively heat only the raw water near the hollow fiber membrane 11 to 40 ° C. is inevitably much smaller. Energy savings can be achieved by the difference.
- the heater 70 includes a heating wire surrounding the pipe 45, but the heater 70 of the present invention is not limited to the heating wire, and is capable of heating the pipe 45. Any form may be used.
- the heater 70 of the present invention may heat the air passing through the pipe 45 by using a heating fluid.
- FIG 3 is a view schematically showing the immersion hollow fiber membrane module
- Figure 4 is a view showing the filtration system of the present invention using the immersion hollow fiber membrane module.
- the submerged hollow fiber membrane module 100 includes two headers 110, and a plurality of hollow fiber membranes 120 are disposed between the two headers 110. Both ends of each of the plurality of hollow fiber membranes 120 are potted with an adhesive such as polyurethane to each of the headers 110.
- water collecting portions (not shown) communicating with the terminal openings of the hollow fiber membranes 120 are formed, respectively, to collect permeated water passing through the hollow fiber membranes 120.
- the immersion hollow fiber membrane module 100 is located in the water treatment tank 200.
- Raw water 210 to be treated flows into the water treatment tank 200.
- the submerged hollow fiber membrane module 100 is immersed in the raw water 210 to be treated.
- the diffuser 400 for ejecting air for cleaning the hollow fiber membrane 120 is located under the immersion type hollow fiber membrane module 100. Air blown out through the diffuser 400 is provided from the air supply means 300 as air heated to a predetermined temperature.
- the air supply means 300 of the present invention may be a blower or an air compressor, but is not limited thereto, and may be in any form as long as it can provide air.
- the air discharged from the air supply means 300 is supplied to the diffuser 400 in the water treatment tank 200 through the pipe 350, and the pipe 350 is heated by the heater 500.
- the heater 500 includes a heating wire surrounding the pipe 350, but the heater 500 of the present invention is not limited to the heating wire and may be any type as long as it can heat the pipe 350.
- the heater 500 of the present invention may heat the air passing through the pipe 350 using a heating fluid.
- the heated air is blown to the hollow fiber membrane module 100 through the diffuser 400 to intensively increase the temperature of the raw water near the hollow fiber membrane 120. Therefore, a temperature difference occurs between the raw water temperature near the hollow fiber membrane 120 and the raw water temperature located elsewhere, and thermal energy may be reduced due to the temperature difference.
- FIG. 5 is a view schematically showing the recovery cleaning of the hollow fiber membrane module is performed by the filtration system of the present invention.
- the hollow fiber membrane module 100 is placed in a cleaning tank 600 filled with an acid or alkali chemical cleaning liquid 610 for the recovery cleaning of the hollow fiber membrane module 100 which has been subjected to water treatment for a predetermined period of time. Immerse it.
- the cleaning tank 600 there is an diffuser 800 that blows out air, and the diffuser 800 is positioned below the hollow fiber membrane module 100 in the cleaning tank 600.
- Air blown out through the diffuser 800 is provided from the air supply means 700 as air heated to a predetermined temperature.
- the air supply means 700 may be a blower or an air compressor, but is not limited thereto and may be in any form as long as it can provide air.
- the air discharged from the air supply means 700 is supplied to the diffuser 800 in the cleaning tank 600 through the pipe 750, and the pipe 750 is heated by the heater 900.
- the heater 900 includes a heating wire surrounding the pipe 750, but the heater 900 of the present invention is not limited to the heating wire and may be any type as long as it can heat the pipe 750.
- the heater 900 of the present invention may heat the air passing through the pipe 750 using a heating fluid.
- the heated air is blown out to the hollow fiber membrane module 100 through the diffuser 800 to intensively increase the temperature of the chemical cleaning liquid near the hollow fiber membrane 120. Therefore, a temperature difference is generated between the temperature of the chemical cleaning liquid near the hollow fiber membrane 120 and the temperature of the chemical cleaning liquid located elsewhere, and thermal energy can be saved due to the temperature difference.
- the recovery rate of the filtration membrane defined by the following formula is lower than that in the case where the raw water or the chemical cleaning liquid is not heated and provided to the water treatment tank or the cleaning tank. Much higher.
- energy consumption is reduced by 1/2 or more while showing almost the same cleaning effect as compared to the case where the raw water or the chemical cleaning liquid is provided to the water treatment tank or the washing tank in a heated state. can do.
- FIG. 6 is a partial block diagram illustrating the operation of a heater according to an embodiment of the present invention.
- the pipe 1200 is preferably formed of a suitable material in consideration of characteristics such as durability, corrosion resistance, thermal conductivity.
- the heater 1300 may be controlled in various ways by the controller 1500.
- the controller 1500 may switch the heater 1300 in a cyclic heating mode such as turning on / off the operation of the heater 1300 at a predetermined cycle or changing the intensity of the heater 1300 at a predetermined cycle. Can be controlled.
- the heater 1300 indirectly heats the air by heating the pipe 1200, the air is heated by the residual heat of the pipe 1200 even if the heater 1300 is temporarily stopped or the intensity thereof is temporarily reduced. Can be. Therefore, when the heater 1300 is controlled in the periodic heating mode, the energy consumption can be reduced without substantially reducing the cleaning effect.
- the air supply means 1100 may also be controlled in a cyclic aeration mode by the controller 1500. That is, the controller 1500 may turn on / off the operation of the air supply means 1100 at regular intervals or change the intensity of power applied to the air supply means 1100 at regular intervals. In this case, the controller 1500 may control the heater 1300 such that the heater 1300 operates in conjunction with the air supply means 1100.
- a temperature sensor 1400 may be further provided which directly or indirectly senses the temperature of the air heated by the heater 1300, and transmits the temperature data to the controller 1500.
- the controller 1500 controls the operation of the heater 1300 based on the temperature data transmitted from the temperature sensor 1400. For example, when the temperature data transmitted from the temperature sensor 1400 is greater than or equal to a predetermined temperature, the controller 1500 may stop the operation of the heater or reduce its strength. Therefore, breakage of the filtration system and waste of energy due to abnormal overheating can be prevented.
Abstract
Description
Claims (21)
- 여과막을 포함하는 막 모듈;상기 여과막의 세정을 위한 공기 공급 수단; 및상기 공기 공급 수단으로부터 제공되는 공기를 가열하기 위한 히터를 포함하는 여과 시스템.
- 제 1 항에 있어서,상기 히터의 동작을 제어하는 제어부를 더 포함하는 것을 특징으로 하는 여과 시스템.
- 제 2 항에 있어서,상기 제어부는 일정 주기로 상기 히터의 동작을 온/오프시키는 것을 특징으로 하는 여과 시스템.
- 제 2 항에 있어서,상기 제어부는 일정 주기로 상기 히터의 세기를 변화시키는 것을 특징으로 하는 여과 시스템.
- 제 2 항에 있어서,상기 제어부는 상기 공기 공급 수단과 연동하여 상기 히터가 동작되도록 상기 히터의 동작을 제어하는 것을 특징으로 하는 여과 시스템.
- 제 2 항에 있어서,상기 가열된 공기의 온도를 감지하는 온도 센서를 더 포함하고,상기 제어부는 상기 온도 센서로부터 전송되는 온도 데이터에 기초하여 상기 히터의 동작을 제어하는 것을 특징으로 하는 여과 시스템.
- 제 6 항에 있어서,상기 온도 센서로부터 전송되는 온도 데이터가 소정 온도 이상일 경우 상기 제어부는 상기 히터의 동작을 정지시키거나 상기 히터의 세기를 낮추는 것을 특징으로 하는 여과 시스템.
- 제 1 항에 있어서,내부에 상기 막 모듈을 포함하는 수 처리 탱크;상기 수 처리 탱크 내에서 상기 막 모듈의 아래에 위치하는 산기관; 및상기 공기 공급 수단으로부터 제공되는 공기를 상기 산기관으로 안내하는 배관을 더 포함하며,상기 히터는 상기 배관을 가열함으로써 상기 배관을 통해 흐르는 상기 공기를 가열하는 것을 특징으로 하는 여과 시스템.
- 제 1 항에 있어서,상기 공기 공급 수단으로부터 제공되는 공기를 상기 막 모듈로 안내하는 배관을 포함하며,상기 히터는 상기 배관을 가열함으로써 상기 배관을 통해 흐르는 상기 공기를 가열하는 것을 특징으로 하는 여과 시스템.
- 제 1 항에 있어서,상기 막 모듈의 회복 세정을 위한 세정 탱크;상기 세정 탱크 내에서 상기 막 모듈의 아래에 위치하는 산기관; 및상기 공기 공급 수단으로부터 제공되는 공기를 상기 세정 탱크로 안내하는 배관을 포함하며,상기 히터는 상기 배관을 가열함으로써 상기 배관을 통해 흐르는 상기 공기를 가열하는 것을 특징으로 하는 여과 시스템.
- 제 8 항 내지 제 10 항 중 어느 한 항에 있어서,상기 히터는 열선(heating coil) 또는 열매(heating fluid)를 이용하여 상기 배관을 가열하는 것을 특징으로 하는 여과 시스템.
- 여과막을 포함하는 막 모듈을 이용하여 수 처리를 수행하는 단계;상기 여과막의 세정을 위한 공기를 제공하는 단계;상기 공기를 가열하는 단계; 및상기 가열된 공기를 상기 여과막에 제공하는 단계를 포함하는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 공기 가열 단계는 일정 주기로 반복되는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 공기 가열 단계는 일정 주기로 가열 정도가 변화되는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 공기 가열 단계는 상기 공기 제공 단계와 연동하여 수행되는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 가열된 공기의 온도를 직접 또는 간접으로 감지하는 단계를 더 포함하는 것을 특징으로 하는 여과 방법.
- 제 16 항에 있어서,상기 감지된 온도가 소정 온도 이상일 경우 상기 공기 가열 단계를 중지시키거나 공기 가열 정도를 낮추는 단계를 더 포함하는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 수 처리는 상기 막 모듈이 수 처리 탱크 내의 원수에 침지된 상태에서 수행되며,상기 막 모듈의 세정을 위한 공기는 배관을 통해 상기 여과막에 공급되는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 막 모듈의 세정을 위한 공기는 배관을 통해 상기 막 모듈 내로 공급되는 것을 특징으로 하는 여과 방법.
- 제 12 항에 있어서,상기 수 처리를 수행한 막 모듈을 세정 탱크에 침지시키는 단계를 더 포함하고,상기 막 모듈의 세정을 위한 공기는 배관을 통해 상기 세정 탱크에 침지된 상기 막 모듈의 상기 여과막으로 공급되는 것을 특징으로 하는 여과 방법.
- 제 18 항 내지 제 20 항 중 어느 한 항에 있어서,상기 공기를 가열하는 단계는 상기 배관을 가열함으로써 수행되는 것을 특징으로 하는 여과 방법.
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CN200980145523.2A CN102215943A (zh) | 2008-11-14 | 2009-11-05 | 过滤系统和方法 |
US13/129,328 US20110220572A1 (en) | 2008-11-14 | 2009-11-05 | Filtering system and method |
US14/246,819 US20140217023A1 (en) | 2008-11-14 | 2014-04-07 | Filtering system and method |
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KR1020090105868A KR101589756B1 (ko) | 2008-11-14 | 2009-11-04 | 여과 시스템 및 그 방법 |
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US13/129,328 A-371-Of-International US20110220572A1 (en) | 2008-11-14 | 2009-11-05 | Filtering system and method |
US14/246,819 Division US20140217023A1 (en) | 2008-11-14 | 2014-04-07 | Filtering system and method |
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KR100461227B1 (ko) * | 2001-01-31 | 2004-12-13 | 가부시끼가이샤 도시바 | 여과기, 여과기의 역세척 방법, 여과 장치 및 발전 플랜트 |
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US9333464B1 (en) | 2014-10-22 | 2016-05-10 | Koch Membrane Systems, Inc. | Membrane module system with bundle enclosures and pulsed aeration and method of operation |
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