WO2013054674A1 - 水処理ユニットおよび水処理装置 - Google Patents
水処理ユニットおよび水処理装置 Download PDFInfo
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- WO2013054674A1 WO2013054674A1 PCT/JP2012/075354 JP2012075354W WO2013054674A1 WO 2013054674 A1 WO2013054674 A1 WO 2013054674A1 JP 2012075354 W JP2012075354 W JP 2012075354W WO 2013054674 A1 WO2013054674 A1 WO 2013054674A1
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- separation membrane
- water treatment
- water
- treatment unit
- membrane
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Images
Classifications
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- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/029—Multistep processes comprising different kinds of membrane processes selected from reverse osmosis, hyperfiltration or nanofiltration
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D61/58—Multistep processes
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- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
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- B01D61/04—Feed pretreatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Definitions
- the present invention relates to a water treatment unit and a water treatment apparatus including the water treatment unit.
- a water treatment apparatus using a reverse osmosis membrane is known.
- organic particles such as turbidity and TEP (Transparent Polymer Particles) from raw water are generally used before treatment with a reverse osmosis membrane. Preprocessing is performed to remove.
- the separation membrane used in the pretreatment apparatus described in Japanese Patent No. 4525857 is an island-like node 5 and an ultrafine fiber-like shape connecting the node 5 as schematically shown in FIG.
- the fibril 6 is mainly composed.
- the inventors of the present application have conducted intensive research on the structure of a separation membrane that can effectively remove saccharides, particularly saccharides swollen with water like TEP, in a pretreatment, and found that there is a relationship between the node 5 and the fibril 6. The ratio was found to affect the removal rate of sugars.
- the present invention uses a separation membrane in which the ratio of nodes (islands) and fibrils (fibrous parts) is adjusted, and a water treatment unit capable of improving the removal rate of saccharides from the water to be treated. It aims at providing a water treatment apparatus (water treatment system).
- the water treatment unit according to the present invention can be used in a water treatment apparatus that performs water treatment using a reverse osmosis membrane.
- the water treatment unit includes a casing, a separation membrane that is mounted in the casing and bent in a pleat shape, a reinforcing member that is mounted on the separation membrane and has a function of reinforcing the separation membrane, and a rotation mechanism that rotates the separation membrane.
- a cleaning device capable of cleaning the separation membrane.
- the separation membrane has a plurality of island-shaped portions and a plurality of fibrous portions extending from the island-shaped portions and having a narrower width than the island-shaped portions. The area is larger than the area of the shape portion.
- the thickness of the reinforcing member is larger than the thickness of the separation membrane, and the water permeability of the reinforcing member is larger than the water permeability of the separation membrane.
- the separation membrane can be composed of, for example, a hydrophobic membrane, and the reinforcing member can be composed of at least one selected from a metal mesh member, a nonwoven fabric, and a woven fabric.
- the removal rate of saccharides from the water to be treated is 50% or more.
- the area of the fibrous part on the membrane surface of the separation membrane is preferably 5 times or more the area of the island part.
- the cleaning device preferably includes a cleaning liquid supply means capable of supplying a cleaning liquid into the casing, an ultrasonic supply means capable of supplying ultrasonic waves to the separation membrane, and a water flow / bubbles capable of supplying a water flow or a bubble flow to the separation membrane. At least one of the flow supply means.
- the water treatment apparatus (water treatment system) according to the present invention performs water treatment using a reverse osmosis membrane.
- the water treatment apparatus includes a first water treatment unit capable of pre-treating water to be treated and a second water treatment unit capable of subjecting the water to be treated to main treatment.
- the first water treatment unit rotates the separation membrane, the casing, the separation membrane mounted in the casing and bent in a pleat shape, the reinforcing member attached to the separation membrane and having a function of reinforcing the separation membrane And a cleaning device capable of cleaning the separation membrane.
- the separation membrane has a plurality of island-like portions and a plurality of fibrous portions extending from the island-like portion and having a narrower width than the island-like portion, and the area of the fiber-like portion on the membrane surface is reduced to an island.
- the area is larger than the area of the shape portion.
- the separation membrane in the separation membrane, the area of the fibrous portion on the surface of the membrane is made larger than the area of the island portion, that is, the separation membrane is a membrane mainly composed of the fibrous portion. I learned that the removal rate can be improved. Since such a separation membrane is used in the water treatment unit and the water treatment apparatus (water treatment system) according to the present invention, the removal rate of saccharides from the water to be treated can be improved.
- FIG. 2 It is a block diagram which shows the water treatment apparatus (water treatment system) in one embodiment of this invention. It is sectional drawing which shows the water treatment unit in one embodiment of this invention.
- (A) is a sectional view taken along line III-III in FIG. 2, and (b) is an enlarged view of the vicinity of a nozzle in the sectional view shown in (a).
- FIG. 2 It is a schematic diagram which shows the example of a part of structure of the conventional separation membrane surface.
- a water treatment device (water treatment system) 1 is a device that performs water treatment using a reverse osmosis membrane.
- the water treatment apparatus 1 can be used for treatment of water containing various impurities such as seawater, groundwater, and wastewater, but is useful for seawater desalination treatment.
- the water treatment apparatus 1 can perform a main treatment on a pump 2, a first water treatment unit 3 that can pre-treat water to be treated, and water to be treated.
- a second water treatment unit 4 and a pump 7 for supplying reverse water to the reverse osmosis membrane at high pressure are provided.
- the pump 2 is disposed in front of the first water treatment unit 3, and the treated water (product water) is sent by the pump 2 in the direction according to the arrow in the figure.
- seawater is sent to the first water treatment unit 3 and passed through a separation membrane (filtration membrane) of the first water treatment unit 3 to perform pretreatment. Thereby, organic particles and inorganic solids in seawater are removed by filtration.
- the seawater thus pretreated is sent to the second water treatment unit 4 and passed through a reverse osmosis membrane (not shown) of the second water treatment unit 4 for desalination. Thereby, fresh water can be obtained from seawater.
- the first water treatment unit 3 may be composed of a single unit or a plurality of units. That is, a single-stage filtration configuration may be employed, or a multi-stage filtration configuration that performs two or more stages of filtration may be employed. For example, when two-stage filtration is adopted, the first filtration using a separation membrane having an average pore size of about several ⁇ m and the second filtration using microfiltration (MF) or ultrafiltration (UF). It is conceivable to perform the filtration.
- MF microfiltration
- UF ultrafiltration
- the first water treatment unit 3 includes a casing 30, a separation membrane 31 that is attached in the casing 30 and bent in a pleat shape, and a function that is attached to the separation membrane 31 and reinforces the separation membrane 31.
- a rotating member 42 that rotates the separation membrane, and a cleaning device 41 that is attached to the casing 30 and that can clean the separation membrane 31.
- the separation membrane 31 either a hollow fiber or a membrane can be used. Here, a case where a membrane is used is shown.
- the casing 30 can be made of any material as long as it has, for example, a square shape or a cylindrical shape and has a required mechanical strength.
- the casing 30 includes a lid portion 32, a side wall portion, and a tapered bottom portion 33.
- a rotation mechanism 42 capable of rotating the separation membrane 31 is attached to the lid portion 32, and a discharge channel 39 is provided on the bottom portion 33.
- a treated water channel 34 for introducing seawater, which is treated water, into the casing 30 is connected to the side wall portion of the casing 30.
- a nozzle 35 is connected to the end of the water channel 34 to be treated. The opening of the nozzle 35 is disposed in the casing 30 so as to face the outer peripheral surface of the separation membrane 31.
- the shape of the opening can be arbitrarily set, but is rectangular in the example of FIG.
- the length of the nozzle 35 in the vertical direction of FIG. 2 may be different from the length of the separation membrane 31 in the axial direction, but these may be of the same length as shown in FIG.
- unnecessary liquid such as untreated seawater remaining in the casing 30 can be discharged by the discharge flow path 39.
- the rotation mechanism 42 includes a motor 36 and a rotation shaft 36a extending from the motor.
- the rotating shaft 36a is connected to the separation membrane 31 via a connecting member, and the power from the motor 36 is transmitted to the separation membrane 31 via the rotating shaft 36a, and the separation membrane 31 is rotated clockwise or counterclockwise. can do.
- the separation membrane 31 has an annular shape and is mounted in the casing 30 so as to be rotatable by a rotation mechanism 42.
- isolation members that isolate the internal space surrounded by the separation membrane 31 from the surrounding space in the casing 30 are installed.
- a central pipe 37 is disposed so as to extend into an internal space surrounded by the separation membrane 31.
- the central pipe 37 has a water intake hole 37 a and is connected to a filtrate flow path 38 through which filtrate water filtered by the separation membrane 31 flows.
- the separation membrane 31 can be made of, for example, a hydrophobic polymer material such as fluororesin or polyolefin.
- fluororesin include polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF).
- PVDF polyvinylidene fluoride
- the polyolefin include polyethylene and other poly- ⁇ -olefins.
- PTFE polytetrafluoroethylene
- PVDF polyvinylidene fluoride
- the thickness of the separation membrane 31 may be about 500 ⁇ m or less, for example.
- the separation membrane 31 used in the water treatment apparatus 1 of the present embodiment includes a node that is an island-like portion, and a fibrous fibril that extends from the node and is narrower than the node. Is provided. In the example of FIG. 4, there are a large number of nodes and fibrils, but some of the nodes extend long linearly or curvedly. In the present invention, such a node extending in a straight line or a curved line is also defined as being included in the concept of the “island portion”. In the separation membrane 31, for example, the area of fibrils (fibrous parts) on the membrane surface shown in FIG. 4 is made larger than the area of nodes (island parts).
- the separation membrane 31 is a fibril-based membrane.
- the area of the fibril is 3 times or more of the area of the node, more preferably 5 times or more. In the example of FIG. 4, the area of the fibril is about five times the area of the node.
- the removal rate of saccharides in the water to be treated can be improved.
- the saccharide removal rate in the water to be treated can be 50% or more.
- the area of the fibril and the node may be measured by taking a micrograph of the surface of the separation membrane 31 and measuring the area on the photograph.
- the separation membrane 31 has a large number of minute holes.
- the average pore diameter of these holes is, for example, in the range of 1 to 10 ⁇ m, more preferably in the range of 2 to 5 ⁇ m. It is.
- PTFE powder is produced by emulsion polymerization, and this powder is formed into a film by extrusion. Thereafter, the separation membrane 31 can be manufactured by stretching the obtained membrane and subjecting it to a heat treatment.
- the average pore diameter, mechanical strength, etc. of the separation membrane 31 can be adjusted by appropriately adjusting the conditions for extruding and stretching the PTFE powder.
- the ratio of the area of a fibril and the area of a node can also be adjusted by adjusting the particle size, extrusion, stretching, and heat treatment conditions of the PTFE powder.
- a reinforcing member 40 is attached inside the separation membrane 31. Since the separation membrane 31 can be reinforced by the reinforcing member 40, the shape of the separation membrane 31 can be maintained. This can also contribute to an improvement in the removal rate of saccharides in the water to be treated.
- the reinforcing member 40 is attached to the entire back surface of the separation membrane 31, but the reinforcing member 40 can be selectively installed on the back surface of the separation membrane 31.
- the reinforcing member 40 can be formed in a lattice shape.
- the number of reinforcing members 40 is singular, but a plurality of reinforcing members 40 may be attached to the separation membrane 31.
- a lattice-shaped reinforcing member 40 that does not hinder the permeation performance of the separation membrane 31 may be combined with the surface of the separation membrane 31.
- the thickness of the reinforcing member 40 is preferably larger than the thickness of the separation membrane 31. Thereby, the separation membrane 31 can be effectively reinforced. However, regarding the water permeability, it is preferable that the water permeability of the reinforcing member 40 is larger than the water permeability of the separation membrane 31. Thereby, even when the reinforcing member 40 is provided, the amount of water to be treated that passes through the separation membrane 31 can be secured.
- the reinforcing member 40 can be composed of at least one selected from, for example, a metal mesh member, a nonwoven fabric, and a woven fabric.
- the separation membrane 31 is produced by the above-described method, and is made of, for example, a nonwoven fabric and is the same as the separation membrane 31.
- the reinforcing member 40 having a size is separately prepared, the separation membrane 31 and the reinforcing member 40 are overlapped and joined to each other, and the joined separation membrane 31 and the reinforcing member 40 are bent a plurality of times over the whole. What is necessary is just to join the edge parts of.
- the water to be treated passes through the water passage 34 to be treated and is sprayed from the opening of the nozzle 35 and is applied to the outer peripheral surface of the separation membrane 31 as a jet water flow.
- a part of the water to be treated passes through the separation membrane 31 and reaches the internal space surrounded by the reinforcing member 40. At this time, it is filtered by the separation membrane 31.
- the separation membrane 31 is rotationally driven by the rotation mechanism 42 at a rotational speed of, for example, about 50 rpm, and the other part (untreated water) of the water to be treated flows in the casing 30 in the same direction as the rotation of the separation membrane 31. It will be.
- the separation membrane 31 is washed by a jet water flow from the nozzle 35.
- the water to be treated can be filtered while cleaning the surface of the separation membrane 31.
- Untreated water that has not been filtered, turbid components that have settled in the casing 30, and the like are sequentially discharged from the discharge passage 39 at the bottom of the casing 30.
- the filtered water filtered by the separation membrane 31 is guided to the filtered water flow path 38 through the water intake hole 37 a provided in the central pipe 37 and flows out of the first water treatment unit 3.
- a cleaning liquid supply means that can supply a cleaning liquid into the casing 30, an ultrasonic supply means (not shown) that can supply ultrasonic waves to the separation membrane 31,
- an ultrasonic supply means that can supply ultrasonic waves to the separation membrane 31
- Examples thereof include a water flow / bubble flow supply means (not shown) capable of supplying a water flow and a bubble flow.
- the water flow / bubble flow supply means can supply, for example, a jet water flow or a jet water flow containing bubbles. Each of these means may be used alone or in combination. Further, the number of the above means and the installation position can be arbitrarily selected.
- the cleaning liquid supply means any known configuration can be adopted as long as the cleaning liquid can be supplied into the casing 30.
- the cleaning liquid hypochlorous acid, a surfactant and the like can be used, and in particular, for example, water containing limonene (see Formula 1 below) can be given.
- the limonene-containing water is supplied to the inner region of the separation membrane 31 at, for example, about 30 ppm to 1000 ppm, and TEP and turbidity clogged in the membrane are removed by reverse cleaning.
- TEP and turbidity clogged in the membrane are removed by reverse cleaning.
- clogging of the separation membrane 31 can be effectively removed by supplying limonene-containing water to the inner region of the separation membrane 31 and backwashing the separation membrane 31.
- the TEP entangled with the film can be lifted and effectively removed.
- a rinsing treatment using a weak acid solution such as a citric acid aqueous solution or an acetic acid aqueous solution, or an alcohol solution such as an isopropyl alcohol aqueous solution or an ethanol aqueous solution.
- a weak acid solution such as a citric acid aqueous solution or an acetic acid aqueous solution
- an alcohol solution such as an isopropyl alcohol aqueous solution or an ethanol aqueous solution.
- a known ultrasonic generator such as an ultrasonic transducer can be used as the ultrasonic supply means.
- Ultrasound (for example, about 15 to 400 kHz) from the ultrasonic generator may be indirectly applied to the separation membrane 31 via the water to be treated in the casing 30 or the separation membrane element, or directly applied to the separation membrane 31. Sound waves may be given.
- Examples of the water flow / bubble flow supply means include various instruments and devices such as a nozzle capable of jetting a water flow and / or a bubble flow.
- a plurality of water flow / bubble flow supply means may be disposed, for example, around the separation membrane 31.
- the second water treatment unit 4 performs a desalting treatment in the water treatment apparatus 1 of the present embodiment.
- the second water treatment unit 4 includes a reverse osmosis membrane having a pore diameter of about 1 to 2 nm.
- the reverse osmosis membrane may be configured as a spiral type or a tubular type, or may be configured as a hollow fiber membrane, but preferably has a structure capable of treating a large amount of seawater.
- the sugar amount can be measured by liquid chromatography of concentrated water to be treated. Specifically, the water to be treated is concentrated, the obtained concentrated sample is hydrolyzed, then analyzed by liquid chromatography, particularly ion chromatography, and quantified based on the peak intensity of the sugar in the obtained chromatogram. be able to. Concentration of the water to be treated can be performed by a method of re-dissolving the residue after distillation of water in the water to be treated or freeze-drying the water to be treated with a small amount of pure water.
- hydrolysis for changing the polysaccharide in the water to be treated into monosaccharide is performed.
- filtration or centrifugation for removing turbidity in the water to be treated, treatment with an ion exchange resin for removing ions dissolved in the water to be treated may be performed. .
- examples of the mobile phase include sodium hydroxide solution.
- examples of the detector include a differential refractometer, but in the case of ion chromatography, an electrochemical detector is preferably used.
- amount of sugar means the total amount of rhamnose amount, galactose amount, glucose amount, and mannose amount
- saccharide removal rate means the amount of rhamnose amount, galactose amount, The rate of decrease of the total amount of measured values of glucose and mannose relative to “seawater (treated water)”.
Abstract
Description
本実施の形態の水処理装置(水処理システム)1は、逆浸透膜を用いて水処理を行う装置である。該水処理装置1は、海水、地下水、排水等の様々な不純物が含まれる水の処理に使用可能であるが、海水の淡水化処理に有用である。
分離膜31では、例えば図4に示される膜表面におけるフィブリル(繊維状部)の面積をノード(島状部)の面積よりも大きくする。つまり、分離膜31をフィブリル主体の膜とする。好ましくは、フィブリルの面積をノードの面積の3倍以上とし、より好ましくは、5倍以上とする。図4の例では、フィブリルの面積は、ノードの面積の約5倍である。このように分離膜31をフィブリル主体の膜とすることにより、被処理水における糖類の除去率を向上することができる。例えば、分離膜31の表面におけるフィブリルの面積とノードの面積とを適切に調節することにより、被処理水における糖類の除去率を50%以上とすることができる。なお、フィブリルとノードの面積は、例えば分離膜31表面の顕微鏡写真を撮影し、該写真上での面積を測定すればよい。
糖量の測定は、濃縮した被処理水の液体クロマトグラフィーにより行うことができる。具体的には、被処理水を濃縮し、得られた濃縮サンプルを加水分解した後に、液体クロマトグラフィー、特にイオンクロマトグラフィーにより分析し、得られたクロマトグラムの糖のピーク強度に基づいて定量することができる。被処理水の濃縮は、被処理水中の水分の留去や被処理水を凍結乾燥した後の残渣を、少量の純水で再溶解する方法等により行うことができる。
Claims (7)
- 逆浸透膜を用いた水処理を行う水処理装置において使用可能な水処理ユニットであって、
ケーシングと、
前記ケーシング内に装着され、プリーツ状に屈曲された分離膜と、
前記分離膜に装着され、前記分離膜を補強する機能を有する補強部材と、
前記分離膜を回転させる回転機構と、
前記分離膜を洗浄可能な洗浄装置と、
を備え、
前記分離膜は、複数の島状部と、前記島状部から延び前記島状部よりも細幅である繊維状の複数の繊維状部とを有し、膜表面における前記繊維状部の面積を前記島状部の面積よりも大きくした、水処理ユニット。 - 前記補強部材の厚みを前記分離膜の厚みよりも大きくし、
前記補強部材の水透過度を前記分離膜の水透過度よりも大きくした、請求項1に記載の水処理ユニット。 - 前記分離膜を疎水性膜で構成し、
前記補強部材を、金属メッシュ部材、不織布、織物から選ばれる少なくとも1種で構成した、請求項1または請求項2に記載の水処理ユニット。 - 前記分離膜の膜表面における前記繊維状部の面積を前記島状部の面積の3倍以上とした、請求項1から請求項3のいずれか1項に記載の水処理ユニット。
- 被処理水からの糖類の除去率が50%以上である、請求項1から請求項4のいずれか1項に記載の水処理ユニット。
- 前記洗浄装置は、前記ケーシング内に洗浄液を供給可能な洗浄液供給手段と、前記分離膜に超音波を供給可能な超音波供給手段と、前記分離膜に水流や気泡流を供給可能な水流・気泡流供給手段との少なくとも1つを含む、請求項1から請求項5のいずれか1項に記載の水処理ユニット。
- 逆浸透膜を用いた水処理を行う水処理装置であって、
被処理水に前処理を施すことが可能な第1水処理ユニットと、
被処理水に本処理を施すことが可能な第2水処理ユニットとを備え、
前記第1水処理ユニットは、
ケーシングと、
前記ケーシング内に装着され、プリーツ状に屈曲された分離膜と、
前記分離膜に装着され、前記分離膜を補強する機能を有する補強部材と、
前記分離膜を回転させる回転機構と、
前記分離膜を洗浄可能な洗浄装置とを含み、
前記分離膜は、複数の島状部と、前記島状部から延び前記島状部よりも細幅である繊維状の複数の繊維状部とを有し、膜表面における前記繊維状部の面積を前記島状部の面積よりも大きくした、水処理装置。
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SG11201400902TA SG11201400902TA (en) | 2011-10-13 | 2012-10-01 | Water Treatment Unit and Water Treatment Apparatus |
CN201280049627.5A CN103857629A (zh) | 2011-10-13 | 2012-10-01 | 水处理单元和水处理装置 |
KR1020147009233A KR20140077906A (ko) | 2011-10-13 | 2012-10-01 | 수처리 유닛 및 수처리 장치 |
ES201490016A ES2520465R1 (es) | 2011-10-13 | 2012-10-01 | Unidad de tratamiento de agua y aparato de tratamiento de agua |
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JP6693775B2 (ja) * | 2016-03-10 | 2020-05-13 | 住友電気工業株式会社 | 濾過装置、濾過方法および水処理システム |
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CN109824175B (zh) * | 2019-03-30 | 2020-07-31 | 山东大学 | 一种有机废水超声及水力空化联合处理装置 |
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