HK1131962A1 - Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for wastewater treatment using air- floatation process using the same - Google Patents

Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for wastewater treatment using air- floatation process using the same

Info

Publication number
HK1131962A1
HK1131962A1 HK09111628.8A HK09111628A HK1131962A1 HK 1131962 A1 HK1131962 A1 HK 1131962A1 HK 09111628 A HK09111628 A HK 09111628A HK 1131962 A1 HK1131962 A1 HK 1131962A1
Authority
HK
Hong Kong
Prior art keywords
same
silica
diffusers
ceramic
manufacturing
Prior art date
Application number
HK09111628.8A
Inventor
Yong Su Choi
Sanghyup Lee
Seok Won Hong
Chanhyuk Park
Seung Ho Kim
Original Assignee
Korea Inst Sci & Tech
Korea Ceramic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Inst Sci & Tech, Korea Ceramic Co Ltd filed Critical Korea Inst Sci & Tech
Publication of HK1131962A1 publication Critical patent/HK1131962A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231262—Diffusers characterised by the shape of the diffuser element having disc shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/26—Extrusion dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6021—Extrusion moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape

Abstract

Silica or alumina based ceramic diffusers generate microbubbles for solid-liquid separation of pollutants in wastewater. Methods for manufacturing the diffusers and methods for wastewater treatment based onair-flotation using the diffusers are also disclosed. The ceramic diffuseris capable of achieving a particle size distribution in which the sizes of silica or alumina particles increase in the direction towards the center with particles on the surface being the smallest. Thus a small air pressure around 1 atm is capable of providing a uniform and steady stream of microbubbles for securing a rapid flotation of pollutants in wastewater. In addition, the ceramic diffuser can be used conveniently and semi -permanent Iy without maintenance problems, adding to its economic advantage. Furthermore, the enhanced productivity arising from the use of the extrusion molding process for producing the ceramic diffusers supports additional cost reduction.
HK09111628.8A 2006-07-26 2009-12-10 Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for wastewater treatment using air- floatation process using the same HK1131962A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060070148A KR100759834B1 (en) 2006-07-26 2006-07-26 Silica or alumina ceramic membrane diffuser for generating microbubbles, manufacturing method and manufacturing device
PCT/KR2007/000261 WO2008013349A1 (en) 2006-07-26 2007-01-16 Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for wastewater treatment using air- floatation process using the same

Publications (1)

Publication Number Publication Date
HK1131962A1 true HK1131962A1 (en) 2010-02-12

Family

ID=38981645

Family Applications (1)

Application Number Title Priority Date Filing Date
HK09111628.8A HK1131962A1 (en) 2006-07-26 2009-12-10 Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for wastewater treatment using air- floatation process using the same

Country Status (4)

Country Link
KR (1) KR100759834B1 (en)
CN (1) CN101484393B (en)
HK (1) HK1131962A1 (en)
WO (1) WO2008013349A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100844141B1 (en) * 2007-03-20 2008-07-04 한국과학기술연구원 Silica or alumina ceramic diffuser for generating microbubbles, method for manufacturing the same and method for air-floatation using the same
CN102079577A (en) * 2010-12-17 2011-06-01 北京机电院高技术股份有限公司 Surface layer aerating system and method matched with effective microorganism technology for sewage treatment
DE102012207731A1 (en) 2012-05-09 2013-11-14 Matan Beery Apparatus and method for the pre-purification of water, in particular seawater
CN103172164B (en) * 2012-06-29 2016-02-03 北京仁创科技集团有限公司 A kind of aerator disk and preparation method thereof
US9937472B2 (en) * 2015-05-07 2018-04-10 Techmetals, Inc. Assembly operable to mix or sparge a liquid
KR20160132707A (en) * 2015-05-11 2016-11-21 주식회사 코리아세라믹인터내셔날 Diffuser for disposal plant for purifying sewage or waste water, and manfacturing method therefor
DE102015208694A1 (en) 2015-05-11 2016-11-17 Akvolution Gmbh Apparatus and method for generating gas bubbles in a liquid
KR20160132708A (en) * 2015-05-11 2016-11-21 주식회사 코리아세라믹인터내셔날 Diffuser for disposal plant for purifying sewage or waste water, and manfacturing method therefor
EP3424588B1 (en) * 2016-03-01 2021-05-26 Hirose Holdings&Co., Ltd. Gas introducing/retaining device, gas introducing/retaining method, and gas release head
CN111888955A (en) * 2020-08-06 2020-11-06 浙江荣弘科技有限公司 Micro-nano bubble generation device, air floatation device and liquid treatment method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1332007C (en) * 1986-08-06 1994-09-13 Masahiro Fujii Process for activated-sludge treatment of sewage or industrial waste water
KR0166437B1 (en) * 1996-03-15 1999-01-15 우덕창 Method for preparing porous ceramic substrate with a large surface area
KR0173542B1 (en) * 1996-03-15 1999-02-01 우덕창 Aerator having an improved foaming surface
KR200239065Y1 (en) 2000-03-03 2001-09-25 (주)엠에치엔지니어링 Air supplying pipes for waste water disposal system

Also Published As

Publication number Publication date
CN101484393B (en) 2013-04-24
KR100759834B1 (en) 2007-10-04
WO2008013349A1 (en) 2008-01-31
CN101484393A (en) 2009-07-15

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20180116