JP2001017970A - Water treatment equipment using immersion type membrane filtration device - Google Patents

Water treatment equipment using immersion type membrane filtration device

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Publication number
JP2001017970A
JP2001017970A JP19380199A JP19380199A JP2001017970A JP 2001017970 A JP2001017970 A JP 2001017970A JP 19380199 A JP19380199 A JP 19380199A JP 19380199 A JP19380199 A JP 19380199A JP 2001017970 A JP2001017970 A JP 2001017970A
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Japan
Prior art keywords
reaction vessel
membrane
membrane filtration
raw water
filtration device
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Legal status (The legal status 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 status listed.)
Withdrawn
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JP19380199A
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Japanese (ja)
Inventor
Tetsuhiro Hasegawa
Yasuo Horii
安雄 堀井
哲宏 長谷川
Original Assignee
Kubota Corp
株式会社クボタ
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Priority to JP19380199A priority Critical patent/JP2001017970A/en
Publication of JP2001017970A publication Critical patent/JP2001017970A/en
Application status is Withdrawn legal-status Critical

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • Y02W10/15Aerobic processes

Abstract

PROBLEM TO BE SOLVED: To successively perform membrane filtration treatment of raw water in an anaerobic vessel by providing a water treatment equipment with a reaction vessel into which raw water flows, an immersion type membrane filtration device immersed in the reaction vessel and an ultrasonic wave irradiation means for irradiating the inside of a liquid in the reaction vessel with ultrasonic waves. SOLUTION: This equipment is provided with: a reaction vessel 22 into which raw water flows through a raw water supply pipeline 21; an immersion type membrane filtration device 23 immersed inside the reaction vessel 22, wherein the membrane filtration device 23 consists of a membrane module having plural tubes of ceramic tubular filtration membrane and is connected to a suction pump 24 for applying a driving pressure to the membrane module through a liquid permeate suction pipeline 25 and an organic membrane can also be used for the membrane module; an air diffuser pipe 26 placed below the membrane filtration device 23 inside the reaction vessel 22; a blower 27 that is used for supplying air to the air diffuser pipe 26 and placed outside the reaction vessel 22; and an ultrasonic wave irradiation device 28 having an ultrasonic wave irradiation section 28a placed inside the reaction vessel 22, and an ultrasonic generator 28b that is used for transmitting ultrasonic waves to the ultrasonic wave irradiation section 28a through a waveguide and placed outside the reaction vessel 22.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、浄水処理、下水処理、工場排水処理、埋立浸出水処理、し尿処理等の水処理技術に係り、浸漬型膜濾過装置を使用する水処理設備に関するものである。 BACKGROUND OF THE INVENTION The present invention is water treatment, sewage treatment, industrial wastewater treatment, landfill leachate treatment relates to water treatment technology human waste treatment, etc., relates to a water treatment facility using a submerged membrane filtration apparatus is there.

【0002】 [0002]

【従来の技術】従来、この種の水処理設備としては、例えば図2に示すものがある。 Conventionally, as this type of water treatment facilities, there is for example the one shown in FIG. 図2において、原水供給管1を通して原水が流入する反応槽2には浸漬型膜濾過装置3をを配置し、浸漬型膜濾過装置3の下方に散気管4 In Figure 2, the reaction vessel 2 which raw water flows through the raw water supply pipe 1 is arranged a submerged membrane filtration apparatus 3, trachea 4 diffusing beneath the immersion type membrane filtering device 3
を配置し、散気管4に散気空気を供給するブロア5を槽外に配置している。 It was placed, and a blower 5 for supplying aeration air to the aeration tube 4 disposed Sogai.

【0003】浸漬型膜濾過装置3は、限外濾過膜、精密濾過膜の濾過膜を備えた膜モジュールを槽内に浸漬し、 [0003] submerged membrane filtration apparatus 3, immersed ultrafiltration membrane, the membrane module having a filtration membrane of microfiltration membranes in the tank,
膜モジュールを透過した透過液を槽外へ取り出す透過液吸引管6に吸引ポンプ7を配置しており、吸引ポンプ7 The permeate suction pipe 6 to retrieve the permeate passing through the membrane module to the outside of the tank and place the suction pump 7, the suction pump 7
の吸引圧を駆動圧力として槽内液を濾過する。 The intracisternal solution is filtered suction pressure as a driving pressure. 透過液吸引管6は貯留槽8に連通し、貯留槽8と透過液吸引管6 The permeate suction pipe 6 communicates with the reservoir 8, a reservoir 8 permeate suction pipe 6
の間に逆洗水供給管9を設けている。 It is provided with a backwash water supply pipe 9 between. 逆洗水供給管9は先端側が吸引ポンプ7の上流側において透過液吸引管6 Permeate suction pipe 6 backwash water supply pipe 9 at a tip side in the upstream side of the suction pump 7
に連通し、途中に逆洗ポンプ10を設けている。 Communicates with, it is the way to provide a backwash pump 10.

【0004】この構成においては、ブロア5により散気管4を通して空気を供給し、この空気のエアリフト作用により生起する上向流を浸漬型膜濾過装置3にクロスフローで供給し、膜面を上向流で洗いながら浸漬型膜濾過装置3を駆動する。 [0004] In this configuration, the air supply through the diffusion pipe 4 by the blower 5, and supplies a cross flow immersion type membrane filtering device 3 an upward flow arising by air lift action of the air, the film surface upward driving a submerged membrane filtration apparatus 3 while washing the flow. 浸漬型膜濾過装置3は吸引ポンプ7 Immersion type membrane filtering device 3 the suction pump 7
の吸引圧を駆動圧力として作動し、原水供給管1を通して反応槽2に流入する原水を濾過し、膜モジュールを透過した処理水(透過液)を透過液吸引管6を通して貯留槽8へ供給する。 Operating the suction pressure as a driving pressure, the raw water flowing into the reaction vessel 2 through the raw water supply pipe 1 is filtered and supplies treated water having passed through the membrane module (permeate) through permeate suction pipe 6 to the reservoir 8 .

【0005】この浸漬型膜濾過装置3の膜モジュールの膜面に付着する汚濁物質(ケーキ層)は定期的な逆洗操作によって洗浄する。 [0005] pollutants (cake layer) adhering to the membrane surface of the submerged membrane filtration apparatus 3 of the membrane module is cleaned by periodic backwashing operation. 逆洗操作は、吸引ポンプ7を停止する状態で逆洗ポンプ10を起動し、貯留槽8の処理水を逆洗水供給管9を通して透過液吸引管6に供給し、処理水を膜モジュールに圧送して行なう。 Backwash operation, activates the backwash pump 10 in a state of stopping the suction pump 7, the treated water reservoir 8 is supplied to the permeate suction pipe 6 through backwash water supply pipe 9, the treated water to the membrane module pumping was carried out.

【0006】 [0006]

【発明が解決しようとする課題】上記した従来の構成において、浸漬型膜濾過装置3は、その膜面に付着する汚濁物質によって目詰まりを起こし易いので、運転中は散気空気により生起する上向流で膜面を洗浄し、定期的な水逆洗を比較的高い頻度で行なう必要がある。 In [0007] conventional construction described above, the immersion type membrane filtering device 3, so prone to clogging by contaminants adhering to the membrane surface, on during operation to occur by aeration air washing the film surface in countercurrent, it is necessary to carry out relatively frequently recurring water backwash. この水逆洗は、濾過運転を停止した状態で、浸漬型膜濾過装置3 This water backwash, while stopping the filtration operation, the immersion type membrane filtering device 3
で処理した処理水を使用して行なうので、水逆洗の頻度が多くなると濾過運転を停止するトータルの時間が長くなり、このロス時間を補うためには浸漬型膜濾過装置3 In so carried out using the treated process water, the total time to stop the filtration operation and the frequency of Mizugyakuarai increases becomes long, submerged membrane filtration apparatus 3 to make up for this loss time
に通常運転において必要な処理能力以上の余分な処理能力を持たせる必要がある。 It is necessary to normally have excess capacity of more processing power required in operation to. また、運転中の膜面洗浄のためには空気を散気することが必須であるので、槽内が酸素富裕状態となるので、好気性槽に適用することはできても、嫌気性槽に適用することはできなかった。 Moreover, since for membrane surface cleaning during operation it is essential to aeration air, because the tank is an oxygen rich state, although it is possible to apply the aerobic tank, anaerobic tank it was not possible to apply.

【0007】本発明は上記した課題を解決するものであり、嫌気性槽において膜濾過処理を可能にする浸漬型膜濾過装置を使用する水処理設備を提供することを目的とするものである。 [0007] The present invention has been made to solve the above problems, it is an object to provide a water treatment facility using a submerged membrane filtration apparatus for enabling membrane filtering treatment in the anaerobic tank.

【0008】 [0008]

【課題解決するための手段】上記課題を解決するために、本発明の浸漬型膜濾過装置を使用する水処理設備は、原水が流入する反応槽と、反応槽に浸漬する浸漬型膜濾過装置と、反応槽の槽内液中に超音波を照射する超音波照射手段とを備えたものである。 To solve the above object, according to solve problems], water treatment equipment using submerged membrane filtration apparatus of the present invention includes a reaction vessel raw water flows, submerged membrane filtration device immersed in the reaction vessel When, in which a ultrasonic wave irradiation means for irradiating ultrasonic waves to the bath in a solution of the reaction vessel. 上記した構成により、超音波照射手段から反応槽の槽内液中に照射する超音波は、浸漬型膜濾過装置の膜面を超音波振動させ、膜面に汚濁物質が付着することを抑制するとともに、膜面から汚濁物質を剥離させる。 With the configuration described above, the ultrasonic waves irradiated from the ultrasonic wave irradiation means Tank solution in the reaction vessel, prevents the membrane surface of the submerged membrane filtration apparatus is ultrasonically vibrated, contaminants from adhering to the film surface together, to separate the contaminants from the membrane surface.

【0009】したがって、従来の水逆洗や空気散気による洗浄を行なわずとも、透過流束の経時的減少を抑制しながら浸漬型膜濾過装置を運転することができる。 Accordingly, it is possible without performing cleaning with conventional water backwash or air diffusers, operating the submerged membrane filtration apparatus while suppressing the temporal decrease in the permeation flux. しかも、超音波は原水中の微量有害物質、例えばダイオキシン類や農薬成分の分解に寄与するので、処理水中の微量有害物質を低減することができる。 Moreover, ultrasound trace toxic substances in the raw water, for example because it contributes to the decomposition of dioxins and pesticides component, it is possible to reduce the trace toxic substances in the treated water.

【0010】 [0010]

【発明の実施の形態】以下、本発明の実施の形態を図面に基づいて説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention with reference to the accompanying drawings. 図1において、原水供給管21を通して原水が流入する反応槽22はその内部に浸漬型膜濾過装置23を浸漬している。 In Figure 1, reaction vessel 22 which raw water flows through the raw water supply pipe 21 is immersed an immersion type membrane filtering device 23 therein. 浸漬型膜濾過装置23はセラミック製の複数のチューブ型濾過膜を有す膜モジュールからなり、膜モジュールに駆動圧力を与える吸引ポンプ24が透過液吸引管25を介して接続している。 Immersion type membrane filtering device 23 comprises a membrane module having a plurality of tubular filtration membrane made of ceramics, the suction pump 24 to provide a driving pressure to the membrane module is connected via a permeate suction pipe 25. 浸漬型膜濾過装置23の膜モジュールには有機膜を使用することも可能である。 A membrane module of immersing type membrane filtering device 23 is also possible to use an organic film.

【0011】浸漬型膜濾過装置23の下方には散気管2 [0011] dispersion below the immersion type membrane filtering device 23 trachea 2
6が配置してあり、散気管26に空気を供給するブロア27を槽外に配置している。 6 Yes arranged, it is arranged to supply air blower 27 to Sogai the diffusing pipe 26. 反応槽22の内部には超音波照射装置28の超音波照射部28aを配置し、超音波照射部28aに導波管を通して超音波を送る超音波発振器28bを槽外に配置している。 The interior of the reaction vessel 22 are arranged to place the ultrasonic wave irradiation unit 28a of the ultrasonic irradiation apparatus 28, the ultrasonic oscillator 28b to send an ultrasonic through waveguide in the ultrasonic irradiation part 28a to Sogai. 透過液吸引管25は貯留槽29に連通しており、吸引ポンプ24より上流側の透過液吸引管25と貯留槽29とを連通して逆洗水供給管30を設け、逆洗水供給管30に逆洗ポンプ31を介装している。 Permeate suction pipe 25 is communicated with the reservoir 29, the backwash water supply pipe 30 provided in communication with the reservoir 29 and the upstream side of the permeate suction pipe 25 the suction pump 24, backwash water supply pipe It is interposed the backwash pump 31 to 30.

【0012】以下、上記した構成における作用を説明する。 [0012] In the following, a description will be given of the operation in the configuration described above. 始めに、反応槽22を嫌気性槽として運転する場合について説明する。 First, a description will be given of a case of operating the reactor 22 as the anaerobic tank. ブロア27の運転を停止して反応槽22を無酸素状態もしくは酸素欠乏状態に維持し、原水供給管21から反応槽22に原水として供給する下水汚泥等を嫌気性微生物によって生物処理する。 Stop operation of the blower 27 to maintain the reaction tank 22 to anoxic or anoxic conditions, to biological treatment by anaerobic microorganisms sewage sludge or the like supplied as raw water to the reaction tank 22 from the raw water supply pipe 21. このとき、 At this time,
超音波照射装置28を起動し、超音波発振器28bから超音波照射部28aに超音波を送り、超音波照射部28 Start ultrasound irradiation apparatus 28, sends the ultrasonic wave from the ultrasonic generator 28b to the ultrasonic irradiation part 28a, ultrasonic wave irradiation section 28
aから槽内液中に浸漬型膜濾過装置23に向けて超音波を照射する。 Towards Tank solution in the immersion type membrane filtering device 23 from a ultrasonic irradiation. 照射した超音波は汚泥中の微量有害物質、 Irradiated ultrasonic waves trace toxic substances in the sludge,
例えばダイオキシン類や農薬成分の分解に寄与し、微量有害物質が減少する。 For example contribute to the decomposition of dioxins and pesticides components, trace toxic substances is reduced.

【0013】一方、吸引ポンプ24を駆動して吸引負圧を浸漬型膜濾過装置23に与え、膜モジュールによって槽内液を濾過し、濾過した処理水を透過液吸引管25を通して貯留槽29へ送る。 Meanwhile, given the negative suction pressure by driving the suction pump 24 to the immersion type membrane filtering device 23, the intracisternal was filtered by the membrane module, the reservoir 29 is filtered and treated water through the permeated liquid suction pipe 25 send. このとき、槽内液中に照射する超音波は、浸漬型膜濾過装置23の膜面を超音波振動させ、膜面に汚濁物質が付着することを抑制するとともに、膜面から汚濁物質を剥離させる。 At this time, ultrasonic waves to be irradiated in the bath solution, stripping the film surface of the immersion type membrane filtering device 23 is ultrasonically vibrated, thereby prevent the contaminants from adhering to the film surface, the contaminants from the membrane surface make. したがって、従来の水逆洗や空気散気による洗浄を行なわずとも、透過流束の経時的減少を抑制しながら浸漬型膜濾過装置23を運転することができる。 Therefore, it is possible without performing cleaning with conventional water backwash or air diffusers, operating the submerged membrane filtration apparatus 23 while suppressing the temporal decrease in the permeation flux.

【0014】浸漬型膜濾過装置23は必要に応じて水逆洗する。 [0014] submerged membrane filtration apparatus 23 is water backwash when necessary. 水逆洗は吸引ポンプ24の運転を停止する状態で、逆洗ポンプ31を駆動して貯留槽29の処理水を逆洗水供給管30を通して浸漬型膜濾過装置23の膜モジュールに圧送して行なう。 Mizugyakuarai in a state of stopping the operation of the suction pump 24, and pumped to the membrane module of immersing type membrane filtering device 23 through a backwash water supply pipe 30 to the treated water storage tank 29 by driving the backwash pump 31 carried out. このとき、膜面に付着する汚濁物質は超音波振動によって剥離し易い状態にあるので、小量の逆洗水によって十分な洗浄効果を得ることができる。 At this time, contaminants adhering to the membrane surface because the state easy to peel by ultrasonic vibration, it is possible to obtain a sufficient washing effect by a small amount of backwash water.

【0015】反応槽22を好気性槽として運転する場合には、ブロア27を起動し、反応槽22の槽内液中に散気管26から空気を散気する。 [0015] When operating the reactor 22 as aerobic tank, start the blower 27 and air diffuser air from the diffuser tube 26 to the tank in solution in the reaction vessel 22. このとき、膜面に付着する汚濁物質の除去は超音波振動によって行なっているので、散気管26から散気する空気量は好気性微生物による生物処理に必要な量だけで良く、従来のような膜面洗浄に必要な多量の空気量を必要としないので、ブロア2 At this time, since the removal of pollutants adhering to the film surface is performed by ultrasonic vibration, the amount of air aeration by the aeration tube 26 need only an amount necessary for the biological treatment by the aerobic microorganisms, such as conventional It does not require a large amount of air volume required for the membrane surface cleaning, the blower 2
7の負荷を低減することができる。 It is possible to reduce the 7 load. この場合にも、超音波は汚泥中の微量有害物質の分解に寄与する。 In this case, ultrasonic contributes to decomposition of trace harmful substances in the sludge.

【0016】 [0016]

【発明の効果】以上のように、本発明によれば、反応槽の槽内液中に超音波を照射することにより、浸漬型膜濾過装置の膜面を超音波振動させ、膜面に汚濁物質が付着することを抑制するとともに、膜面から汚濁物質を剥離させるので、水逆洗や空気散気による洗浄を行なわずとも、透過流束の経時的減少を抑制しながら浸漬型膜濾過装置を運転することができる。 As is evident from the foregoing description, according to the present invention, by irradiating ultrasonic waves to the bath in a solution of the reaction vessel, the membrane surface of the submerged membrane filtration apparatus is ultrasonically vibrated, contamination on the film surface suppresses that the material deposited, since the separate the pollutants from the membrane surface, without performing a washing by Mizugyakuarai and air diffuser, while suppressing the temporal decrease in the flux submerged membrane filtration apparatus it can be operated. 水逆洗はその頻度を抑制することができるとともに、超音波振動によって汚濁物質が剥離し易いので小量の処理水によって十分な洗浄効果が得られる。 Mizugyakuarai is it is possible to suppress the frequency, sufficient cleaning effect by a small amount of treated water so easily polluted material is separated by ultrasonic vibration can be obtained. しかも、超音波は原水中の微量有害物質であるダイオキシン類や農薬成分を分解し、処理水中の微量有害物質を低減することができる。 Moreover, ultrasound decompose dioxins and agricultural chemical ingredients is very small harmful substances in the raw water, it is possible to reduce the trace toxic substances in the treated water.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の実施の形態における水処理設備を示す模式図である。 1 is a schematic diagram showing a water treatment equipment in the embodiment of the present invention.

【図2】従来の水処理設備を示す模式図である。 2 is a schematic diagram showing a conventional water treatment facility.

【符号の説明】 DESCRIPTION OF SYMBOLS

21 原水供給管 22 反応槽 23 浸漬型膜濾過装置 24 吸引ポンプ 25 透過液吸引管 26 散気管 27 ブロア 28 超音波照射装置 28a 超音波照射部 28b 超音波発振器 29 貯留槽 30 逆洗水供給管 31 逆洗ポンプ 21 raw water supply pipe 22 reaction vessel 23 submerged membrane filtration apparatus 24 the suction pump 25 permeate suction pipe 26 diffuser tube 27 blower 28 ultrasonic irradiation devices 28a ultrasonic wave irradiation unit 28b ultrasonic generator 29 reservoir 30 backwash water supply pipe 31 backwash pump

フロントページの続き (51)Int.Cl. 7識別記号 FI テーマコート゛(参考) C02F 3/12 C02F 3/12 S 3/28 3/28 A Fターム(参考) 4D006 GA06 GA07 HA21 HA93 KA31 KB22 KB23 KC03 KC13 KC19 MA02 MC03X PA01 PA02 PB08 PC61 PC62 4D028 BC17 BD00 BD17 4D040 AA31 Of the front page Continued (51) Int.Cl. 7 identification mark FI theme Court Bu (Reference) C02F 3/12 C02F 3/12 S 3/28 3/28 A F -term (reference) 4D006 GA06 GA07 HA21 HA93 KA31 KB22 KB23 KC03 KC13 KC19 MA02 MC03X PA01 PA02 PB08 PC61 PC62 4D028 BC17 BD00 BD17 4D040 AA31

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 原水が流入する反応槽と、反応槽に浸漬する浸漬型膜濾過装置と、反応槽の槽内液中に超音波を照射する超音波照射手段とを備えたことを特徴とする浸漬型膜濾過装置を使用する水処理設備。 1. A a reaction vessel in which raw water flows, and wherein the submerged membrane filtration apparatus is immersed in the reaction vessel, further comprising an ultrasonic irradiating means for irradiating ultrasonic waves to the bath in the solution in the reaction vessel water treatment equipment using submerged membrane filtration apparatus.
JP19380199A 1999-07-08 1999-07-08 Water treatment equipment using immersion type membrane filtration device Withdrawn JP2001017970A (en)

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US7533830B1 (en) 2007-12-28 2009-05-19 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7673516B2 (en) 2006-12-28 2010-03-09 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid treatment system
US7703698B2 (en) 2006-09-08 2010-04-27 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid treatment chamber and continuous flow mixing system
US7712353B2 (en) 2006-12-28 2010-05-11 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid treatment system
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