WO2013136531A1 - Multiple-disc type air microbubble diffuser - Google Patents
Multiple-disc type air microbubble diffuser Download PDFInfo
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- WO2013136531A1 WO2013136531A1 PCT/JP2012/056954 JP2012056954W WO2013136531A1 WO 2013136531 A1 WO2013136531 A1 WO 2013136531A1 JP 2012056954 W JP2012056954 W JP 2012056954W WO 2013136531 A1 WO2013136531 A1 WO 2013136531A1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/00—Specific treatment goals
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
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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
- 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
Definitions
- the present invention relates to a fine bubble diffusing device that can be used repeatedly even if oxygen is supplied with fine bubbles and clogging occurs in the diffusing portion, without requiring replacement of the diffusing portion. .
- the fine bubble diffuser is used for aeration to activate aerobic microorganisms that decompose organic pollutants in water.
- a membrane membrane type having a large number of fine pores or a porous type such as ceramic is used as a fine bubble diffusing device.
- clogging caused by factors such as membrane membrane breakage due to degradation, biofilm formation and microporous clogging due to inorganic salt scale adhesion becomes a problem.
- suspended solids may clog fine pores and clog. When clogging occurs in the pores, the pressure loss increases and the burden on the blower increases.
- the problem to be solved is that the membrane membrane needs to be replaced when the pores are clogged.
- the air diffuser of the present invention is characterized by a structure in which ring-shaped discs are overlapped and a central circle integrated with the disc is fixed with a fixture.
- Each ring-shaped disk is subjected to uneven processing (hereinafter referred to as uneven processing) on one surface by graining, blasting, etching, laser, paper, etc. so that the uneven surface of each disk is in a certain direction By superimposing these, the uneven surface forms fine pores, and a fine bubble diffusing device in which fine bubbles are generated is realized.
- each ring-shaped disk can be disassembled one by one by removing the fixture, and the structure is such that the dirt on each ring-shaped disk can be washed away and returned to the state prior to disassembly.
- each ring-shaped disk is robust and excellent in durability, and is a fine bubble diffuser that can withstand repeated use.
- the multi-disk type air diffuser according to the present invention can generate fine bubbles from the fine pores formed by overlapping the uneven surfaces, and further disassemble the main body and adhere to each ring-shaped disc The used filth is washed and removed, and it can be used repeatedly by assembling it again into the state before decomposition.
- FIG. 1 is a plan view of a ring-shaped disk that constitutes the diffuser of the present invention.
- FIG. 2 is an enlarged view of the concavo-convex surface of the ring-shaped disk constituting the air diffuser of the present invention.
- FIG. 3 is a plan view of the present invention.
- FIG. 4 is a plan view showing a second embodiment of the present invention.
- FIG. 5 is an installation schematic diagram according to the embodiment of the present invention.
- the ring-shaped disk 1 is subjected to uneven processing with a width and height of 0.01 to 1 mm, preferably 0.02 to 0.1 mm only on one surface, and the uneven surface 2 is made constant. Fix with the stacking fixture 3. Moreover, as shown in FIG. 4, you may make it possible to adjust the intensity
- the disc is made of, for example, plastic, metal, ceramic, or glass. An appropriate material can be selected according to the installation environment conditions of the apparatus, and a ring-shaped disc made of the material can be used.
- FIG. 1 the ring-shaped disk made of the material can be used.
- FIG. 5 is a schematic view showing an embodiment in which the blower 6 and the present invention are connected via a header pipe.
- air at a constant pressure is supplied from the blower through the header tube to the multi-disc type fine bubble diffuser, and bubbles are generated from the fine pores in the diffuser.
- installation locations include places requiring purification, such as sewage treatment plants, septic tanks, and closed water areas such as lakes and ponds.
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Provided is an air microbubble diffuser which generates air microbubbles ensuring high oxygen transfer efficiency. Further, the air-diffusing unit in the air microbubble diffuser need not be replaced even when clogging occurs in the unit. The air-diffusing unit is produced by superimposing multiple ring-shaped discs which each have one uneven surface formed by embossing, blasting, etching, laser or paper treatment, or the like, thus bearing fine pores. The air-diffusing unit, which generates air microbubbles, is disassemblable and therefore can be repeatedly used through reassembly after the removal of causal substance of clogging by washing.
Description
本発明は、微細な気泡で酸素を供給し、散気部で目詰まりが生じた場合でも、散気部の交換が不要で、繰り返しの使用が可能となる微細気泡散気装置に関するものである。
The present invention relates to a fine bubble diffusing device that can be used repeatedly even if oxygen is supplied with fine bubbles and clogging occurs in the diffusing portion, without requiring replacement of the diffusing portion. .
微細気泡散気装置は、水中の有機性汚濁物質を分解する好気微生物を活性させるための曝気に用いられている。微細気泡散気装置として、多数の微細気孔を有するメンブレン膜タイプ、又はセラミック等の多孔質タイプが使用されている。従来のメンブレン膜を継続して長時間使用していくと、劣化によるメンブレン膜の破断、バイオフィルムの形成や無機塩のスケールの付着による微細気孔の閉塞、といった要因で生じる目詰まりが問題になる。また、浮遊性固形物が微細気孔を閉塞して、目詰まりすることもある。気孔に目詰まりが生じると、圧力損失が大きくなり送風機の負担が大きくなる。また、送りこんだ空気を排出できるところがなくなるため、微細気泡散気装置自体に負荷がかかり故障の原因となる。また、目詰まりは散気装置の曝気能力を減衰させ、酸素供給量は低下し、それに伴い好気微生物の活性も低下し、有機物質の分解処理が滞る。
安定して酸素を供給し滞りなく好気微生物による分解処理を進めていくために、目詰まりしたメンブレン膜は交換、又は薬品による目詰まり物質の除去処理をすることとなり、散気装置の維持管理に費用を要する。 The fine bubble diffuser is used for aeration to activate aerobic microorganisms that decompose organic pollutants in water. As a fine bubble diffusing device, a membrane membrane type having a large number of fine pores or a porous type such as ceramic is used. When conventional membrane membranes are used continuously for a long time, clogging caused by factors such as membrane membrane breakage due to degradation, biofilm formation and microporous clogging due to inorganic salt scale adhesion becomes a problem. . In addition, suspended solids may clog fine pores and clog. When clogging occurs in the pores, the pressure loss increases and the burden on the blower increases. Further, since there is no place where the sent air can be discharged, a load is applied to the fine bubble diffusing device itself, which causes a failure. Moreover, clogging attenuates the aeration ability of the diffuser, the oxygen supply amount decreases, and the activity of aerobic microorganisms decreases accordingly, and the decomposition process of organic substances is delayed.
In order to stably supply oxygen and proceed with aerobic decomposition without delay, clogged membrane membranes must be replaced or clogged substances removed with chemicals, and maintenance of the diffuser Costs money.
安定して酸素を供給し滞りなく好気微生物による分解処理を進めていくために、目詰まりしたメンブレン膜は交換、又は薬品による目詰まり物質の除去処理をすることとなり、散気装置の維持管理に費用を要する。 The fine bubble diffuser is used for aeration to activate aerobic microorganisms that decompose organic pollutants in water. As a fine bubble diffusing device, a membrane membrane type having a large number of fine pores or a porous type such as ceramic is used. When conventional membrane membranes are used continuously for a long time, clogging caused by factors such as membrane membrane breakage due to degradation, biofilm formation and microporous clogging due to inorganic salt scale adhesion becomes a problem. . In addition, suspended solids may clog fine pores and clog. When clogging occurs in the pores, the pressure loss increases and the burden on the blower increases. Further, since there is no place where the sent air can be discharged, a load is applied to the fine bubble diffusing device itself, which causes a failure. Moreover, clogging attenuates the aeration ability of the diffuser, the oxygen supply amount decreases, and the activity of aerobic microorganisms decreases accordingly, and the decomposition process of organic substances is delayed.
In order to stably supply oxygen and proceed with aerobic decomposition without delay, clogged membrane membranes must be replaced or clogged substances removed with chemicals, and maintenance of the diffuser Costs money.
解決しようとする問題点は、気孔が目詰まりすることによってメンブレン膜が交換を要することになる点である。
The problem to be solved is that the membrane membrane needs to be replaced when the pores are clogged.
本発明品の散気部は、リング状の円板を重ね合わせ、その円板と一体となっている中心円部を固定具で固定した構造を特徴とする。各リング状の円板には、シボ加工、ブラスト、エッチング、レーザー、ペーパーなどによって一表面上に凹凸加工（以下、凹凸加工という）を施し、各円板の凹凸面を一定方向となるように重ねていくことで、それらの凹凸面が微細気孔を形成し、微細な気泡が発生する微細気泡散気装置が実現される。
さらに、固定具をはずすことで、各リング状円板一枚一枚を分解することができ、各リング状円板の汚れを洗浄除去し、分解前の状態に戻せる構造とした。また、各リング状円板は堅牢で耐久性に優れ、繰り返しの使用に耐えうる微細気泡散気装置とした。 The air diffuser of the present invention is characterized by a structure in which ring-shaped discs are overlapped and a central circle integrated with the disc is fixed with a fixture. Each ring-shaped disk is subjected to uneven processing (hereinafter referred to as uneven processing) on one surface by graining, blasting, etching, laser, paper, etc. so that the uneven surface of each disk is in a certain direction By superimposing these, the uneven surface forms fine pores, and a fine bubble diffusing device in which fine bubbles are generated is realized.
Furthermore, each ring-shaped disk can be disassembled one by one by removing the fixture, and the structure is such that the dirt on each ring-shaped disk can be washed away and returned to the state prior to disassembly. In addition, each ring-shaped disk is robust and excellent in durability, and is a fine bubble diffuser that can withstand repeated use.
さらに、固定具をはずすことで、各リング状円板一枚一枚を分解することができ、各リング状円板の汚れを洗浄除去し、分解前の状態に戻せる構造とした。また、各リング状円板は堅牢で耐久性に優れ、繰り返しの使用に耐えうる微細気泡散気装置とした。 The air diffuser of the present invention is characterized by a structure in which ring-shaped discs are overlapped and a central circle integrated with the disc is fixed with a fixture. Each ring-shaped disk is subjected to uneven processing (hereinafter referred to as uneven processing) on one surface by graining, blasting, etching, laser, paper, etc. so that the uneven surface of each disk is in a certain direction By superimposing these, the uneven surface forms fine pores, and a fine bubble diffusing device in which fine bubbles are generated is realized.
Furthermore, each ring-shaped disk can be disassembled one by one by removing the fixture, and the structure is such that the dirt on each ring-shaped disk can be washed away and returned to the state prior to disassembly. In addition, each ring-shaped disk is robust and excellent in durability, and is a fine bubble diffuser that can withstand repeated use.
本発明による多重円板式散気装置は、凹凸面を一定にして重ね合わせることで形成した微細気孔から微細な気泡を発生させることができ、さらに本体を分解して各リング状の円板に付着した汚物を洗浄除去して、再び分解前の状態に組み立てることによって繰り返しの使用が可能となる。
The multi-disk type air diffuser according to the present invention can generate fine bubbles from the fine pores formed by overlapping the uneven surfaces, and further disassemble the main body and adhere to each ring-shaped disc The used filth is washed and removed, and it can be used repeatedly by assembling it again into the state before decomposition.
図１は、本発明散気部を構成するリング状の円板の平面図である。
図２は、本発明散気部を構成するリング状の円板の凹凸面拡大図である。
図３は、本発明の平面図である。
図４は、本発明の第２の形態を示す平面図である。
図５は、本発明の実施の形態に関わる設置模式図である。 FIG. 1 is a plan view of a ring-shaped disk that constitutes the diffuser of the present invention.
FIG. 2 is an enlarged view of the concavo-convex surface of the ring-shaped disk constituting the air diffuser of the present invention.
FIG. 3 is a plan view of the present invention.
FIG. 4 is a plan view showing a second embodiment of the present invention.
FIG. 5 is an installation schematic diagram according to the embodiment of the present invention.
図２は、本発明散気部を構成するリング状の円板の凹凸面拡大図である。
図３は、本発明の平面図である。
図４は、本発明の第２の形態を示す平面図である。
図５は、本発明の実施の形態に関わる設置模式図である。 FIG. 1 is a plan view of a ring-shaped disk that constitutes the diffuser of the present invention.
FIG. 2 is an enlarged view of the concavo-convex surface of the ring-shaped disk constituting the air diffuser of the present invention.
FIG. 3 is a plan view of the present invention.
FIG. 4 is a plan view showing a second embodiment of the present invention.
FIG. 5 is an installation schematic diagram according to the embodiment of the present invention.
以下に本発明の好ましい実施形態を示す。
図１に示すようにリング状の円板１は、一表面上のみ幅と高さ０．０１~１ｍｍ、好ましくは０．０２~０．１ｍｍの凹凸加工を施し、凹凸面２を一定にして重ね合わせ固定具３で固定する。また図４に示すように、重ね合わせた円板と固定具の間にスプリングバネ５を配置することで、固定する際の締め付けの強さを調節可能にしてもよい。
円板は、例えばプラスチック、金属、セラミック、ガラスから成り、装置の設置環境条件に応じて適切な材質を選択し、その材質から成るリング状の円板を使用することができる。
図５は、送風機６と本発明を、ヘッダー管を介して接続した実施形態を示す模式図である。
装置運転時には、送風機より一定圧力の空気がヘッダー管を通して多重円板式微細気泡散気装置に供給され、散気部の微細気孔から気泡が発生する。
設置場所には、例えば、下水処理場や浄化槽、湖や池のような閉鎖的水域といった浄化を要する場所が挙げられる。 Preferred embodiments of the present invention are shown below.
As shown in FIG. 1, the ring-shaped disk 1 is subjected to uneven processing with a width and height of 0.01 to 1 mm, preferably 0.02 to 0.1 mm only on one surface, and the uneven surface 2 is made constant. Fix with the stacking fixture 3. Moreover, as shown in FIG. 4, you may make it possible to adjust the intensity | strength of the clamp | tightening at the time of fixing by arrange | positioning the spring spring 5 between the piled disc and a fixing tool.
The disc is made of, for example, plastic, metal, ceramic, or glass. An appropriate material can be selected according to the installation environment conditions of the apparatus, and a ring-shaped disc made of the material can be used.
FIG. 5 is a schematic view showing an embodiment in which theblower 6 and the present invention are connected via a header pipe.
During operation of the apparatus, air at a constant pressure is supplied from the blower through the header tube to the multi-disc type fine bubble diffuser, and bubbles are generated from the fine pores in the diffuser.
Examples of installation locations include places requiring purification, such as sewage treatment plants, septic tanks, and closed water areas such as lakes and ponds.
図１に示すようにリング状の円板１は、一表面上のみ幅と高さ０．０１~１ｍｍ、好ましくは０．０２~０．１ｍｍの凹凸加工を施し、凹凸面２を一定にして重ね合わせ固定具３で固定する。また図４に示すように、重ね合わせた円板と固定具の間にスプリングバネ５を配置することで、固定する際の締め付けの強さを調節可能にしてもよい。
円板は、例えばプラスチック、金属、セラミック、ガラスから成り、装置の設置環境条件に応じて適切な材質を選択し、その材質から成るリング状の円板を使用することができる。
図５は、送風機６と本発明を、ヘッダー管を介して接続した実施形態を示す模式図である。
装置運転時には、送風機より一定圧力の空気がヘッダー管を通して多重円板式微細気泡散気装置に供給され、散気部の微細気孔から気泡が発生する。
設置場所には、例えば、下水処理場や浄化槽、湖や池のような閉鎖的水域といった浄化を要する場所が挙げられる。 Preferred embodiments of the present invention are shown below.
As shown in FIG. 1, the ring-
The disc is made of, for example, plastic, metal, ceramic, or glass. An appropriate material can be selected according to the installation environment conditions of the apparatus, and a ring-shaped disc made of the material can be used.
FIG. 5 is a schematic view showing an embodiment in which the
During operation of the apparatus, air at a constant pressure is supplied from the blower through the header tube to the multi-disc type fine bubble diffuser, and bubbles are generated from the fine pores in the diffuser.
Examples of installation locations include places requiring purification, such as sewage treatment plants, septic tanks, and closed water areas such as lakes and ponds.
１ リング状円板
２ 凹凸部
３ 固定具
４ 空気孔
５ スプリングバネ
６ 送風機 DESCRIPTION OFSYMBOLS 1 Ring-shaped disk 2 Uneven part 3 Fixing tool 4 Air hole 5 Spring spring 6 Blower
２ 凹凸部
３ 固定具
４ 空気孔
５ スプリングバネ
６ 送風機 DESCRIPTION OF
Claims (6)
- シボ加工、ブラスト、エッチング、レーザー、ペーパーなどによる一表面上に凹凸加工（以下、凹凸加工という）が施されたリング状の円板を、凹凸面が一定方向となるように重ね合わせて固定具で固定した構造であることと、さらに重ね合わせることで形成された気孔から、微細気泡が発生する散気部を持つことを特徴とする多重円板式微細気泡散気装置。 A ring-shaped disk with unevenness (hereinafter referred to as unevenness processing) applied to one surface by embossing, blasting, etching, laser, paper, etc. A multi-disk type fine bubble diffusing device characterized in that it has a structure fixed by the above and a diffuser part for generating fine bubbles from pores formed by further overlapping.
- 請求項１記載の多重円板式微細気泡散気装置は、重ね合わせた前記リング状の円板を、固定具をはずすことで各リング状の円板を一枚一枚分解できる。また、分解した前記リング状の円板は凹凸部を含め全て洗浄でき、その後分解前の状態に戻すことで繰り返しの使用が可能であることを特徴とする。 In the multi-disk type fine bubble diffusing device according to claim 1, each ring-shaped disk can be disassembled one by one by removing the fixture of the overlapped ring-shaped disks. Further, the disassembled ring-shaped disk can be washed entirely including the concavo-convex portions, and can be used repeatedly by returning to the state before disassembly.
- 請求項１または、２記載の多重円板式微細気泡散気装置は、前記リング状の円板を重ね合わせる枚数が変更でき、散気部の長さを調整できることを特徴とする。 The multi-disk type fine bubble diffusing device according to claim 1 or 2 is characterized in that the number of the ring-shaped disks stacked can be changed and the length of the diffusing portion can be adjusted.
- 請求項１または、２または、３記載の多重円板式微細気泡散気装置は、前記リング状の円板が、プラスチック、金属、セラミック、ガラスから各々製作でき、装置の設置環境条件に応じて適切な材質を選択し、その材質から成るリング状の円板を使用することを特徴とする。 The multi-disk type fine bubble diffusing device according to claim 1, 2 or 3, wherein the ring-shaped disk can be manufactured from plastic, metal, ceramic and glass, respectively, and is suitable according to the installation environment conditions of the device A suitable material is selected, and a ring-shaped disk made of the material is used.
- 請求項１または、２または、３または、４記載の多重円板式微細気泡散気装置は、重ね合わせた前記リング状の円板を固定する際に、締め付けの強さを調節できるように円板と固定具の間にスプリングバネを配置したことを特徴とする。 The multi-disk type fine bubble diffusing device according to claim 1, 2 or 3 or 4, wherein the tightening strength can be adjusted when fixing the overlapped ring-shaped disk. A spring spring is arranged between the fixture and the fixture.
- 請求項１または、２または、３または、４または、５記載の多重円板式微細気泡散気装置は、散気部を構成している各板の形状をリング状の多角形板としたことを特徴とする。 The multi-disk type fine bubble diffusing device according to claim 1, 2, 3, 4, or 5 is a ring-shaped polygonal plate as a shape of each plate constituting the diffusing portion. Features.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556363A (en) * | 2013-10-29 | 2015-04-29 | 中国石油化工股份有限公司 | Gas dispersion device and application thereof |
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| JPS5567393A (en) * | 1978-11-16 | 1980-05-21 | Sumitomo Heavy Ind Ltd | Aerating method using tensioned coiled spring type air flowing cylinder |
| JPS60189309U (en) * | 1984-05-28 | 1985-12-14 | 日本ピユ−リフイケ−シヨン株式会社 | filter body |
| JPS61816U (en) * | 1984-06-06 | 1986-01-07 | 帝人株式会社 | filtration device |
| JPS6346915U (en) * | 1986-09-17 | 1988-03-30 | ||
| JPH05507650A (en) * | 1990-06-12 | 1993-11-04 | ランマーク コンサルタンツ リミテッド | Flow control element for use as a filter or gas diffuser |
| JPH11138056A (en) * | 1997-11-07 | 1999-05-25 | Monobe Engineering:Kk | Microporous pipe |
| JPH11290619A (en) * | 1998-04-06 | 1999-10-26 | Koyo Giken:Kk | Filter |
| JP2000070936A (en) * | 1998-08-25 | 2000-03-07 | Ibiden Engineering Kk | Water treating apparatus |
| JP2003210916A (en) * | 2002-01-17 | 2003-07-29 | Atom Engineering:Kk | Filter body of filter apparatus, filter apparatus using the same and method for manufacturing flat plate for filter body |
| JP2003340486A (en) * | 2002-05-27 | 2003-12-02 | Ntt Auto Leasing Co Ltd | Diffuser |
| JP2005152755A (en) * | 2003-11-25 | 2005-06-16 | Monobe Engineering:Kk | Liquid filter |
| JP2008119579A (en) * | 2006-11-10 | 2008-05-29 | Nippon Airitsuhi Kk | Filtration device |
| JP3159378U (en) * | 2010-02-17 | 2010-05-20 | 長谷川 誠 | Filtration device |
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| JPS4937262A (en) * | 1972-08-11 | 1974-04-06 | ||
| JPS5567393A (en) * | 1978-11-16 | 1980-05-21 | Sumitomo Heavy Ind Ltd | Aerating method using tensioned coiled spring type air flowing cylinder |
| JPS60189309U (en) * | 1984-05-28 | 1985-12-14 | 日本ピユ−リフイケ−シヨン株式会社 | filter body |
| JPS61816U (en) * | 1984-06-06 | 1986-01-07 | 帝人株式会社 | filtration device |
| JPS6346915U (en) * | 1986-09-17 | 1988-03-30 | ||
| JPH05507650A (en) * | 1990-06-12 | 1993-11-04 | ランマーク コンサルタンツ リミテッド | Flow control element for use as a filter or gas diffuser |
| JPH11138056A (en) * | 1997-11-07 | 1999-05-25 | Monobe Engineering:Kk | Microporous pipe |
| JPH11290619A (en) * | 1998-04-06 | 1999-10-26 | Koyo Giken:Kk | Filter |
| JP2000070936A (en) * | 1998-08-25 | 2000-03-07 | Ibiden Engineering Kk | Water treating apparatus |
| JP2003210916A (en) * | 2002-01-17 | 2003-07-29 | Atom Engineering:Kk | Filter body of filter apparatus, filter apparatus using the same and method for manufacturing flat plate for filter body |
| JP2003340486A (en) * | 2002-05-27 | 2003-12-02 | Ntt Auto Leasing Co Ltd | Diffuser |
| JP2005152755A (en) * | 2003-11-25 | 2005-06-16 | Monobe Engineering:Kk | Liquid filter |
| JP2008119579A (en) * | 2006-11-10 | 2008-05-29 | Nippon Airitsuhi Kk | Filtration device |
| JP3159378U (en) * | 2010-02-17 | 2010-05-20 | 長谷川 誠 | Filtration device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556363A (en) * | 2013-10-29 | 2015-04-29 | 中国石油化工股份有限公司 | Gas dispersion device and application thereof |
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