WO2019097767A1 - Procédé et dispositif de traitement de l'eau - Google Patents

Procédé et dispositif de traitement de l'eau Download PDF

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Publication number
WO2019097767A1
WO2019097767A1 PCT/JP2018/027986 JP2018027986W WO2019097767A1 WO 2019097767 A1 WO2019097767 A1 WO 2019097767A1 JP 2018027986 W JP2018027986 W JP 2018027986W WO 2019097767 A1 WO2019097767 A1 WO 2019097767A1
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WIPO (PCT)
Prior art keywords
membrane
water
porous membrane
water treatment
backwashing
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Application number
PCT/JP2018/027986
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English (en)
Japanese (ja)
Inventor
津田　隆
大助 大森
昭洋 田中
雅典 東都
雄 川上
翔 御手洗
Original Assignee
Ｉｈｉ運搬機械株式会社
協和機電工業株式会社
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Application filed by Ｉｈｉ運搬機械株式会社, 協和機電工業株式会社 filed Critical Ｉｈｉ運搬機械株式会社
Priority to CN201880075085.6A priority Critical patent/CN111417597A/zh
Publication of WO2019097767A1 publication Critical patent/WO2019097767A1/fr

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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
    • 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
    • B01D65/06—Membrane cleaning or sterilisation ; Membrane regeneration with special washing compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G45/00—Lubricating, cleaning, or clearing devices
    • B65G45/10—Cleaning devices
    • B65G45/22—Cleaning devices comprising fluid applying means
    • 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

Definitions

  • the present invention relates to a water treatment method and apparatus.
  • coal serving as fuel is transported from a coal storage station to a mill using a conveyor, and pulverized coal pulverized in the mill is supplied to a burner of a boiler and burned. It is supposed to be.
  • Sprinkling is performed to the above-mentioned conveyor for the control of the spontaneous combustion with the temperature rise of coal under conveyance, the control of diffusion of the pulverized coal to the circumference, and maintenance of the function of the conveyor itself.
  • FIG. 1 is a whole schematic block diagram showing an example of a conventional cleaning equipment of a conveyor in a lifting coal equipment.
  • the washing water pressurized by the water pouring pump 10 is sprinkled from a water sprinkling nozzle (not shown) to the conveyor C as a plurality of devices and the washing is performed, and the fine powder as the substance to be washed Wash water containing charcoal is collected in the drainage recovery tank 20, and the wash water collected in the drainage recovery tank 20 is supplied to the collection water collecting tank 40 by the collection pump 30, and aggregation treatment is carried out from the collection water collecting tank 40. It is sent to the unit 50.
  • the washing water sent to the aggregation treatment unit 50 is subjected to aggregation treatment of pulverized coal, and then the supernatant washing water is led to the water distribution pump 10 through the treatment water tank 60 and is reused in the form of being reused. It is done and this operation is to be repeated.
  • the aggregation treatment unit 50 includes a pH adjustment tank 51, an aggregation reaction tank 52, and an aggregation sedimentation tank 53, as shown in FIG.
  • a coagulant such as poly aluminum chloride (PAC: Poly Aluminum Chloride) is added to the washing water in the pH adjustment tank 51, and the mixture is stirred by the stirrer 70 to adjust the pH to a neutral range.
  • An aggregate floc of suspended matter is formed, and further, an aggregating agent such as a polymer is added in the agglutination reaction tank 52, and the aggregate floc is enlarged by being stirred by the agitator 71.
  • the washing water containing the enlarged aggregate floc is coagulated and precipitated while being stirred by the stirrer 72 in the coagulation sedimentation tank 53, and the supernatant washing water is reused.
  • the pulverized coal (substance to be washed) which is coagulated and concentrated in the coagulating settling tank 53 is extracted from the bottom of the coagulating settling tank 53 by the coagulated sludge pump 80 and is recovered and processed.
  • patent document 1 shows the general technical level relevant to the conveyor washing water treatment of the lifting and hauling coal installation which utilized the above-mentioned aggregation sedimentation.
  • the coagulant when the addition amount of the coagulant is excessive, the coagulant remains in the recycled washing water, and the coagulant may be coagulated in the pipe, and the pipe may be clogged.
  • the agglomerated and concentrated pulverized coal is an agglomerated material of metal oxide derived from flocculant and floc of pulverized coal, and occupies a large volume, so that there is a problem that the processing cost becomes high.
  • the agglomerated and concentrated pulverized coal is an agglomerated material of metal oxide derived from flocculant and floc of pulverized coal, and occupies a large volume, so that there is a problem that the processing cost becomes high.
  • porous membranes of various materials for example, cellulose acetate (CA: Cellulose Acetate), polyethylene (PE: Polyethylene), polyacrylonitrile (PAN: Polyacrylonitrile), polysulfone ( PS: Polysulfone), polyethersulfone (PES: Polyethersulfone), polyamide (PA: Polyamide), polyvinyl alcohol (PVA: Polyvinyl Alcohol), polyvinylidene fluoride (PVDF: Polyvinylidene Difluoride) etc., and washing water is filtered It is proposed to remove and purify pulverized coal.
  • CA Cellulose Acetate
  • PE Polyethylene
  • PAN Polyacrylonitrile
  • PS Polysulfone
  • PES polyethersulfone
  • PA Polyamide
  • PVA Polyvinyl Alcohol
  • PVDF Polyvinylidene fluoride
  • the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a water treatment method and apparatus capable of stably continuing the operation of filtering washing water by membrane treatment.
  • the water treatment method of the present invention comprises a recovery step of washing equipment and recovering wash water containing a substance to be washed; A membrane filtration step of filtering the cleaning water recovered in the recovery step with a porous membrane to remove and purify the substance to be cleaned; A recycling step of recycling the cleaning water purified in the membrane filtration step; And a regeneration step of washing the porous membrane with a drug when the amount of permeated water of the porous membrane from which the substance to be washed has been removed in the membrane filtration step becomes equal to or less than a set value.
  • a backwashing step of periodically backwashing the porous membrane As a step before the regeneration step, A backwashing step of periodically backwashing the porous membrane; And a surface cleaning step of cleaning the surface of the porous membrane backwashed in the backwashing step.
  • the water treatment method may include a sedimentation step of leading the washing water of the supernatant to the membrane filtration step after settling the substance to be washed contained in the washing water recovered in the recovery step.
  • the porous membrane can be a filter formed by stretching polytetrafluoroethylene.
  • the agent can be caustic soda.
  • the device may be a conveyor of a lifting coal facility, and the to-be-cleaned material may be pulverized coal.
  • a membrane treatment tank into which washing water containing a substance to be washed is introduced.
  • a porous membrane disposed inside the membrane treatment tank and filtering the washing water to remove and purify the substance to be washed;
  • medical solution cleaning tank which wash
  • the membrane treatment unit is A backwashing unit for backwashing the porous membrane; And a surface cleaning unit for cleaning the surface of the porous membrane backwashed by the backwashing unit.
  • the membrane treatment unit is It is possible to provide a sedimentation tank which is installed on the upstream side of the membrane processing tank and guides the washing water of the supernatant obtained by settling the substance to be washed to the membrane processing tank.
  • the porous membrane can be a filter formed by drawing polytetrafluoroethylene.
  • the agent may be caustic soda.
  • the device may be a conveyor of lifting coal equipment, and the material to be cleaned may be pulverized coal.
  • a plurality of the conveyors can be provided, and the membrane treatment units can be distributed and provided for each of the conveyors.
  • 3 to 5 show an example of the water treatment method and apparatus of the present invention.
  • One example of the water treatment method of the present invention is, as shown in FIG. 3, as a basic step, a recovery step (see step S10), a membrane filtration step (see step S30), and a reuse step (see step S90). And the regeneration step (see step S80).
  • the recovery step is, for example, a step of cleaning a conveyor C (see FIG. 5) as an apparatus for lifting and transporting coal and recovering cleaning water containing pulverized coal as a substance to be cleaned.
  • the membrane filtration step is a step of filtering the cleaning water recovered in the recovery step with the porous membrane 130 (see FIG. 4) to remove pulverized coal and purify it.
  • the reuse step is a step of reusing the cleaning water purified in the membrane filtration step.
  • the regeneration step is a step of washing the porous membrane 130 with a drug when the amount of water permeated from the porous membrane 130 from which pulverized coal has been removed in the membrane filtration step becomes equal to or less than a set value.
  • the determination as to whether or not the amount of permeated water of the porous membrane 130 from which pulverized coal has been removed in the membrane filtration step has become equal to or less than a set value is made in step S70.
  • a backwashing step (see step S50) and a surface cleaning step (see step S60) are included as steps before the regeneration step.
  • the backwashing step is a step of periodically backwashing the porous membrane 130.
  • the periodic backwashing is performed by counting time with a timer and determining whether or not a predetermined time has elapsed (see step S40 in FIG. 3).
  • the surface cleaning step is a step of cleaning the surface of the porous membrane 130 backwashed in the backwashing step.
  • a sedimentation step (see step S20) is included between the recovery step and the membrane filtration step.
  • the sedimentation step is a step of guiding the supernatant wash water to the membrane filtration step after settling pulverized coal contained in the wash water recovered in the recovery step.
  • FIG. 4 An example of the water treatment apparatus of the present invention is shown in FIG. 4 and comprises a membrane treatment unit 100 having a membrane treatment tank 120, a porous membrane 130, and a drug washing tank 140.
  • the film processing tank 120 cleans the conveyor C (equipment) so that cleaning water containing pulverized coal (substance to be cleaned) is introduced.
  • a filtration aeration nozzle 151 for injecting the air supplied from the filtration aeration blower 150 is disposed.
  • the porous membrane 130 is disposed at a position above the filtration aeration nozzle 151 inside the membrane processing tank 120 so as to filter the cleaning water and remove and purify pulverized coal.
  • a filtration line 160 for sucking up the filtered washing water is connected, and a filtration pump 161 is provided at the filtration line 160.
  • the pulverized coal (substance to be washed) separated in the membrane treatment tank 120 is extracted from the bottom of the membrane treatment tank 120 by a separation sludge pump 170 and is recovered and processed.
  • the drug washing tank 140 is a tank for taking out the porous membrane 130 from the membrane treatment tank 120 and washing with a drug when the amount of permeated water of the porous membrane 130 becomes equal to or less than a set value.
  • a regeneration aeration nozzle 181 for injecting the air supplied from the regeneration aeration blower 180 is disposed.
  • the membrane processing unit 100 includes a backwashing unit 190 for backwashing the porous membrane 130 with water, and a surface cleaning unit 200 for cleaning the surface of the porous membrane 130 backwashed by the backwashing unit 190.
  • the backwashing unit 190 includes a backwashing line 191 connected to the middle of the filtration line 160, a backwashing pump 192 connected to the backwashing line 191 and supplying backwashing water, and a middle of the backwashing line 191.
  • a controller 195 which periodically outputs an open signal 194 to the backwash valve 193.
  • the backwashing unit 190 may replace the backwashing pump 192 with a blower and perform backwashing with air instead of water.
  • the film processing unit 100 is provided with a sedimentation tank 110 installed on the upstream side of the film processing tank 120 and guiding the cleaning water of the supernatant obtained by settling the pulverized coal to the film processing tank 120.
  • a baffle plate 111 is provided inside the settling tank 110 for preventing the cleaning water from being short-cut and led to the membrane processing tank 120 before the pulverized coal settles.
  • the pulverized coal (substance to be washed) settled in the sedimentation tank 110 is extracted from the bottom of the sedimentation tank 110 by a sedimentation sludge pump 210 and is recovered and processed.
  • porous membrane 130 a filter obtained by drawing and processing polytetrafluoroethylene (PTFE: Polytetrafluoroethylene) is adopted.
  • PTFE Polytetrafluoroethylene
  • caustic soda NaOH
  • concentration of the aqueous solution of caustic soda can be set to 1% to 10%.
  • the equipment is a conveyor C of a lifting coal facility as shown in FIG. 5 and the substance to be cleaned is pulverized coal, but a plurality of conveyors C are provided
  • the film processing units 100 are distributed and disposed for each of the conveyors C.
  • the cleaning water purified by the membrane processing unit 100 and pressurized by the water spray pump 220 is sprayed from a water spray nozzle (not shown) to perform cleaning.
  • cleaning water pressurized by a water distribution pump 220 is sprayed from a sprinkle nozzle (not shown) to perform cleaning.
  • washing water containing pulverized coal as a substance to be washed is recovered (see “recovery step” in step S10 of FIG. 3).
  • the wash water recovered in the recovery step is sent to the membrane processing unit 100.
  • pulverized coal contained in the washing water is sedimented in the sedimentation tank 110 (see “sedimentation process" in step S20 of FIG. 3).
  • the baffle plate 111 is provided inside the settling tank 110, it is prevented that the cleaning water is short-cut and led out to the membrane processing tank 120 before the pulverized coal settles.
  • the pulverized coal (substance to be washed) sedimented in the sedimentation tank 110 is extracted from the bottom of the sedimentation tank 110 by a sedimentation sludge pump 210 and is recovered and processed.
  • the wash water of the supernatant obtained by settling the pulverized coal is introduced to the membrane treatment tank 120.
  • the wash water of the supernatant obtained by settling the pulverized coal contained in the washing water in the sedimentation tank 110 as the sedimentation step is led to the membrane treatment tank 120.
  • the air pressurized by the filtration aeration blower 150 is injected from the filtration aeration nozzle 151, and the washing water is a porous membrane 130 disposed above the filtration aeration nozzle 151. It is filtered to remove pulverized coal and purified (see "membrane filtration step" in step S30 of FIG. 3).
  • the washing water filtered by the porous membrane 130 is sucked up from the filtration line 160 by the filtration pump 161.
  • the pulverized coal (substance to be washed) separated in the membrane treatment tank 120 is extracted from the bottom of the membrane treatment tank 120 by the separation sludge pump 170 and is recovered.
  • the wash water filtered and purified in the membrane treatment tank 120 as the membrane filtration step is pressurized by a water spray pump 220 shown in FIG. 5 and sprayed from a water spray nozzle (not shown) to clean the conveyor C ( Refer to the "reuse step" in step S90 of FIG.
  • the timer counts time, and it is determined whether a predetermined time has elapsed (see step S40 in FIG. 3).
  • an open signal 194 is output from the controller 195 of the backwashing unit 190 shown in FIG. 4 to the backwashing valve 193, and the porous membrane 130 receives the backwashing line 191 from the backwashing pump 192. It backwashes with the water supplied via the filtration line 160 (refer to "backwashing process" of step S50 of FIG. 3).
  • the filtration pump 161 is stopped during the backwashing.
  • the surface of the backwashed porous membrane 130 is cleaned by the surface cleaning unit 200 (see “surface cleaning step” in step S60 of FIG. 3). Thus, clogging of the porous membrane 130 is eliminated.
  • the backwashing valve 193 is closed.
  • step S70 in FIG. 3 it is determined whether the water permeability of the porous membrane 130 has become equal to or less than the set value (see step S70 in FIG. 3).
  • the porous membrane 130 is taken out of the membrane treatment tank 120 and transferred to the chemical cleaning tank 140.
  • An aqueous solution of caustic soda is stored in the medicine cleaning tank 140, and air pressurized by the regenerative aeration blower 180 is jetted from the regenerative aeration nozzle 181.
  • the porous film 130 is regenerated by immersing the porous film 130 in an aqueous solution of caustic soda, thereby allowing regeneration of the porous film 130 (see “regeneration step” in step S80 of FIG. 3).
  • porous membrane 130 if cellulose acetate, polyethylene, polyacrylonitrile, polysulfone, polyether sulfone, polyamide, polyvinyl alcohol, polyvinylidene fluoride and the like are temporarily used as the porous membrane 130, sufficient durability and chemical resistance can be obtained. If caustic soda is used as the drug, it is difficult to continue the operation of filtering the washing water to remove and purify the pulverized coal.
  • the porous membrane 130 is a filter obtained by drawing and processing polytetrafluoroethylene, it is excellent in durability and chemical resistance, and the washing water containing pulverized coal is used. Even in the case where such special drainage is targeted, it is possible to prevent in advance the lowering of the flow velocity of the washing water passing through the porous membrane 130 and to avoid leading to the irreversible clogging of the porous membrane 130, The regeneration process of the porous membrane 130 becomes possible, and the process can be smoothly advanced without stopping the operation.
  • the membrane treatment unit 100 includes a backwashing unit 190 for backwashing the porous membrane 130, and a porous membrane 130 backwashed by the backwashing unit 190. And a surface cleaning unit 200 for cleaning the surface.
  • the water treatment method of the present invention has a sedimentation step of leading the washing water of the supernatant to the membrane filtration step after settling the substance to be washed contained in the washing water recovered in the recovery step.
  • the membrane treatment unit 100 is disposed upstream of the membrane treatment tank 120, and the washing water of the supernatant obtained by settling the substance to be washed is sent to the membrane treatment tank 120.
  • the settling tank 110 which leads is provided. According to this configuration, pulverized carbon called amorphous carbon (amorphous carbon) and having special behavior can be separated and removed in advance before filtration by the membrane processing unit 100, and separation in the membrane processing unit 100 can be performed. Efficiency can be improved.
  • the porous membrane 130 is a filter formed by stretching polytetrafluoroethylene. With such a configuration, it is possible to provide the film processing unit 100 that is excellent in durability and chemical resistance and can perform regenerative processing in an advantageous manner.
  • the agent is caustic soda.
  • the device is a conveyor C of a lifting coal facility, and the material to be cleaned is pulverized coal.
  • the residual pulverized coal in the cleaning water does not occur due to the insufficient addition amount of the coagulant.
  • the addition amount of the coagulant does not cause the remaining of the coagulant in the recycled wash water, and there is no concern of the aggregation of the coagulant in the pipe and the clogging of the pipe.
  • pulverized coal is neither agglomerated nor concentrated, agglomerated material of metal oxide derived from flocculant and floc of pulverized coal is not generated, and increase in the processing cost can be avoided.
  • a plurality of the conveyors C are provided, and the film treatment units 100 are dispersedly provided for each of the conveyors C.
  • the overall operation efficiency is improved as compared to intensively treating the cleaning water collected from the plurality of conveyors C deployed as in the conventional example shown in FIG. Cost reduction can be achieved.
  • a porous membrane made of polytetrafluoroethylene (PTFE) (Poreflon (registered trademark): made by Sumitomo Electric Co., Ltd.) and polyvinylidene fluoride (PVDF) are used. Washing water (discharged raw water) containing pulverized coal (substance to be washed) by washing the conveyor C (equipment) in parallel to a porous membrane (STERAPORE (registered trademark): manufactured by Mitsubishi Chemical): 1) Pass through treatment, compare the conversion value per equivalent membrane area, and observe changes in each differential pressure over time. The results shown in Table 2 were obtained.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • the set value of the differential pressure (suction pressure) reaching point is 40 [kPa].
  • porous membranes made of polytetrafluoroethylene PTFE
  • porous membranes made of polyvinylidene fluoride PVDF
  • porous membrane made of polytetrafluoroethylene (PTFE) and the porous membrane made of polyvinylidene fluoride (PVDF) are used as a drug (citric acid, sodium hypochlorite, caustic soda) It was washed and regenerated.
  • Citric acid washing was performed according to the following procedure. 1. After backwashing with tap water, the water tank was filled with 0.5% citric acid solution, and the aeration blower for filtration was kept operating. The immersion treatment was performed for 2.8 hours or more. 3. The citric acid solution was discarded, and the conveyor C (equipment) was washed and replaced with washing water (discharge raw water) containing pulverized coal (substance to be washed), and the pH was made 6 or more. 4. The solution was allowed to flow under constant filtration conditions.
  • the hypochlorous acid sodium cleaning was performed according to the following procedure. 1. After backwashing with tap water, the water tank was filled with 0.05% sodium hypochlorite solution, and the aeration blower for filtration was kept operating. The immersion treatment was performed for 2.8 hours or more. 3. The hypochlorous acid soda solution was discarded, and the conveyor C (equipment) was cleaned and replaced with washing water (discharge raw water) containing pulverized coal (substance to be washed), and the pH was adjusted to 8 or less. 4. The solution was allowed to flow under constant filtration conditions.
  • the caustic soda wash was performed according to the following procedure. 1. After backwashing with tap water, the water tank was filled with 10% caustic soda solution, and the aeration blower for filtration was kept operating. The immersion treatment was performed for 2.8 hours or more. 3. The caustic soda solution was discarded, and the above-mentioned conveyor C (equipment) was washed and replaced with washing water (discharge raw water) containing pulverized coal (substance to be washed) to make the pH 8 or less. 4. The solution was allowed to flow under constant filtration conditions.
  • the recovery rate for the initial permeation flux of 62.5 [L / h] is 100 ⁇ ⁇ 1- (permeation flux after washing) / (initial permeation flux) ⁇ [%] It asked for.
  • the porous membrane made of polyvinylidene fluoride (PVDF) was thin and brown on its surface. That is, it was found that porous membranes made of polyvinylidene fluoride (PVDF) tend to be weak to caustic soda.
  • water treatment method and apparatus of the present invention are not limited to only the above-described examples and embodiments, and can be applied to cleaning of conveyors in lifting coal facilities of a coal-fired power plant etc.
  • various changes can be made without departing from the scope of the present invention.
  • Reference Signs List 100 membrane processing unit 110 settling tank 120 membrane processing tank 130 porous membrane 140 chemical cleaning tank 190 reverse cleaning unit 200 surface cleaning unit C conveyor (equipment)

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Ce procédé de traitement de l'eau comprend : une étape de récupération pour recueillir l'eau de lavage qui a été utilisée pour nettoyer un dispositif et qui contient des substances évacuées; une étape de filtration sur membrane pour nettoyer l'eau de lavage recueillie dans l'étape de récupération en filtrant et en éliminant des substances évacuées à l'aide d'une membrane poreuse; une étape de réutilisation pour recycler l'eau de lavage nettoyée dans l'étape de filtration sur membrane; et une étape de régénération pour nettoyer la membrane poreuse à l'aide d'un agent chimique lorsque le débit de perméat de la membrane poreuse qui a été utilisée pour éliminer les substances évacuées dans l'étape de filtration sur membrane devient égal ou inférieur à une valeur prédéfinie, la membrane poreuse étant un filtre obtenu par étirage d'un polytétrafluoroéthylène, et l'agent chimique étant de la soude caustique.
PCT/JP2018/027986 2017-11-20 2018-07-25 Procédé et dispositif de traitement de l'eau WO2019097767A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10137542A (ja) * 1996-11-18 1998-05-26 Tohoku Electric Power Co Inc 排煙脱硫排水の処理方法
JP2004267892A (ja) * 2003-03-07 2004-09-30 Toshiba Corp 排水処理設備
JP2006043655A (ja) * 2004-08-09 2006-02-16 Japan Organo Co Ltd 水処理装置およびその運転方法
JP2009233569A (ja) * 2008-03-27 2009-10-15 Kurita Water Ind Ltd 膜分離方法
JP2011115712A (ja) * 2009-12-02 2011-06-16 Mitsubishi Heavy Ind Ltd 濾過膜の洗浄方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1334251A (zh) * 2001-08-31 2002-02-06 上海乐富门水处理工程有限公司 煤灰废水处理方法
CN101525191B (zh) * 2009-04-27 2011-04-13 河南洁源膜分离科技有限公司 焦化废水膜法处理工艺
CN103249472B (zh) * 2010-12-10 2015-05-27 东丽株式会社 浸没式膜元件的化学清洗方法
US10576427B2 (en) * 2014-08-29 2020-03-03 Mitsubishi Electric Corporation Method and apparatus for cleaning filter membrane, and water treatment system
CN204474371U (zh) * 2014-12-23 2015-07-15 三达膜科技（厦门）有限公司 一种洗煤废水的处理装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10137542A (ja) * 1996-11-18 1998-05-26 Tohoku Electric Power Co Inc 排煙脱硫排水の処理方法
JP2004267892A (ja) * 2003-03-07 2004-09-30 Toshiba Corp 排水処理設備
JP2006043655A (ja) * 2004-08-09 2006-02-16 Japan Organo Co Ltd 水処理装置およびその運転方法
JP2009233569A (ja) * 2008-03-27 2009-10-15 Kurita Water Ind Ltd 膜分離方法
JP2011115712A (ja) * 2009-12-02 2011-06-16 Mitsubishi Heavy Ind Ltd 濾過膜の洗浄方法

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