KR930702065A - Aeration of liquid - Google Patents

Aeration of liquid

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Publication number
KR930702065A
KR930702065A KR1019930700577A KR930700577A KR930702065A KR 930702065 A KR930702065 A KR 930702065A KR 1019930700577 A KR1019930700577 A KR 1019930700577A KR 930700577 A KR930700577 A KR 930700577A KR 930702065 A KR930702065 A KR 930702065A
Authority
KR
South Korea
Prior art keywords
conduit
liquid
draft tube
bubbles
section
Prior art date
Application number
KR1019930700577A
Other languages
Korean (ko)
Inventor
그램 존 제임슨
Original Assignee
스테판 제이.웰링크
더 유니버시티 오브 뉴캐슬 리서어치 어쏘시에이트 리미티드
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Filing date
Publication date
Application filed by 스테판 제이.웰링크, 더 유니버시티 오브 뉴캐슬 리서어치 어쏘시에이트 리미티드 filed Critical 스테판 제이.웰링크
Publication of KR930702065A publication Critical patent/KR930702065A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1431—Dissolved air flotation machines
    • 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
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • 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
    • 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
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • 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
    • B01F23/234—Surface aerating
    • 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
    • B01F23/234—Surface aerating
    • B01F23/2341—Surface aerating by cascading, spraying or projecting a liquid into a gaseous atmosphere
    • B01F23/23413—Surface aerating by cascading, spraying or projecting a liquid into a gaseous atmosphere using nozzles for projecting the liquid into the gas atmosphere
    • 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
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4335—Mixers with a converging-diverging cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4337—Mixers with a diverging-converging cross-section
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/305—Treatment of water, waste water or sewage
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Biotechnology (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Physical Water Treatments (AREA)

Abstract

본 발명은 통상적으로 폐수처리 또는 공해물질 제어를 위한 액체의 통기방법 및 장치이다. 액체는 수지관(3)의 상단부내로 유입되는데, 수직관(3)의 하단부는 액체(4)에 잠긴다. 노즐(2)은 액체를 아랫쪽으로 분사(8)시킨다. 분사는 미세기포들의 혼합물을 형성하는 공기(예를들면, 유입구(6)를 통해서 유입됨)를 액체와 함께 이동시키는데, 미세 기포들은 도관의 하단부(5)로부터 액체내로 배출된다. 기포들을 액체내에서 분산시키기 위해 디퓨저(diffuser)판(1)이 제공되며, 분사 및 기포들의 형성을 제어하기 위해서 관내에 흡출관이 제공된다.The present invention is typically a method and apparatus for venting liquids for wastewater treatment or pollutant control. The liquid flows into the upper end of the resin tube 3, and the lower end of the vertical tube 3 is immersed in the liquid 4. The nozzle 2 sprays 8 the liquid downward. The spray moves the air (for example, introduced through inlet 6) together with the liquid, forming a mixture of microbubbles, with the microbubbles exiting the liquid from the lower end 5 of the conduit. A diffuser plate 1 is provided to disperse the bubbles in the liquid, and a draft tube is provided in the tube to control the injection and the formation of the bubbles.

Description

액체의 통기Aeration of liquid

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1(a)도는 본 발명에 따른 기초형태의 통기 장치를 도입한 선형 단면도이다. 제1(b)도는 디퓨저가 없는 상태에서 밀도높은 거품의 거동을 나타낸 선형 단면도이다. 제1(c)도는 제1(a)도에 도시된 장치에 통합되는 디퓨저의 평면도이다.1 (a) is a linear cross-sectional view incorporating the ventilation device of the basic form according to the present invention. Figure 1 (b) is a linear cross-sectional view showing the behavior of dense foam without a diffuser. FIG. 1 (c) is a plan view of the diffuser incorporated in the apparatus shown in FIG. 1 (a).

Claims (18)

액체의 통기 방법으로서, 하단부가 액체에 잠길 수 있도록 아랫쪽으로 뻗어있는 도관의 상부내로 액체를 아랫쪽으로 분사형 이동시키는 단계와, 상기 도관내에서 기포들의 거품을 형성시키는 단계와, 그리고 거품을 아랫쪽으로 이동시켜서 상기 도관의 하단부로부터 액체내로 배출시키는 단계를 포함하는 방법.A method of venting liquid, comprising: spraying a liquid downward into an upper portion of a conduit extending downward so that the lower end is submerged in liquid, forming a bubble of bubbles in the conduit, and moving the foam downward Discharging into the liquid from the lower end of the conduit. 제1항에 있어서, 가스가 상기 도관의 상부에 제공되어 기포들의 거품을 형성하는 분사내로 액체와 함께 운반되는 방법.The method of claim 1, wherein gas is carried with the liquid into the injection provided on top of the conduit to form bubbles of bubbles. 제2항에 있어서, 상기 도관의 상부가 폐쇄되어 있고, 가스가 유량 제어용 수축부(constriction)를 통해 대기압하에서 제공되는 방법.3. The method of claim 2 wherein the top of the conduit is closed and gas is provided at atmospheric pressure through a flow control constriction. 제2항에 있어서, 상기 도관의 상부가 폐쇄되어 있고, 가스가 압력하에서 송풍기 또는 압축기에 의해 제공되는 방법.The method of claim 2 wherein the top of the conduit is closed and gas is provided by a blower or a compressor under pressure. 제1항 내지 4항중 어느 한 항에 있어서, 상기 도관의 상부내로 이동하는 액체가 액체내의 과포화된 용액에 존재하는 가스와 섞이는 방법.5. The method of claim 1, wherein the liquid moving into the top of the conduit is mixed with a gas present in a supersaturated solution in the liquid. 액체의 통기에 사용되는 장치로서, 개방된 하단부를 갖추고 있으며 수직으로 뻗어있는 도관과, 상기 도관내에서 액체를 아랫쪽으로 분사시키기 위해서 상기 도관의 상부내에 배열되어 있으며, 아랫쪽을 향하고 있는 노즐에 압력하에서 액체를 공급하도록 배열된 액체 공급수단과, 그리고 상기 도관의 하단부가 액체에 잠길 수 있게 상기 도관을 지지하도록 배열된 지지수단을 포함하는 장치.A device for venting liquids, the apparatus having an open lower end and arranged vertically in conduit and arranged in the upper part of the conduit for injecting liquid downward in the conduit, under pressure on a downward facing nozzle. Liquid supply means arranged to supply liquid, and support means arranged to support the conduit such that the lower end of the conduit is submerged in liquid. 제6항에 있어서, 상기 도관에 디퓨저(diffuser)가 제공되어 있으며, 상기 디퓨저가 상기 도관의 외면으로부터 바깥쪽으로 뻗어있고, 액체에 잠기도록 위치하고 있으며, 액체에서 기포들이 상승함에 따라 상기 도관의 하단부로부터 배출되는 기포들을 분산시키도록 배치되어 있는 장치.7. The conduit of claim 6, wherein a diffuser is provided in the conduit, the diffuser extending outwardly from the outer surface of the conduit and positioned to submerge in the liquid, from the lower end of the conduit as bubbles rise in the liquid. A device is arranged to disperse the bubbles released. 제7항에 있어서, 상기 디퓨저가 상기 도관을 둘러싸는 판을 포함하고 있으며, 상기 판이 상기 도관 외면의 소정 위치에서 외부 윗쪽으로 뻗어있는 장치.8. The apparatus of claim 7, wherein the diffuser includes a plate surrounding the conduit, wherein the plate extends outwardly at a location on the outer surface of the conduit. 제8항에 있어서, 상기 판에 다수의 구멍들이 제공되어 있으며, 상기 각각의 구멍이 소정 유량의 기포들이 통과할 수 있는 크기를 갖추고 있는 장치.9. The apparatus of claim 8, wherein the plate is provided with a plurality of holes, each hole sized to allow bubbles of a predetermined flow rate to pass therethrough. 제8항 또는 제9항에 있어서, 상기 판의 내부 주변부 및 상기 도관의 외면 사이에 간격이 제공되어 있는 장치.10. A device according to claim 8 or 9, wherein a gap is provided between the inner periphery of the plate and the outer surface of the conduit. 제10항에 있어서, 전환(diverting)링이 상기 간격 아래에서 상기 도관의 외면에 위치해 있으며, 상기 도관 및 판 사이의 상기 간격, 및 상기 도관으로 부터 외부로 이동하는 상기 기포들의 흐름을 윗쪽으로 바꾸도록 배열되어 있는 장치.11. The method of claim 10, wherein a diverting ring is located on the outer surface of the conduit below the gap and changes the gap between the conduit and the plate and the flow of bubbles moving outwards from the conduit upwards. Devices arranged so that 제6항 내지 제11항중 어느 한 항에 있어서, 상기 도관의 내부에 흡출관이 제공되어 있으며, 상기 흡출관이 상기 도관의 축에 대하여 평행한 축을 갖추고 있고, 상기 도관내에서 가스의 유동을 조정하거나 또는 분사를 제한하도록 배치되어 있는 장치.12. A draft tube according to any one of claims 6 to 11, wherein a draft tube is provided inside the conduit, the draft tube having an axis parallel to the axis of the conduit, and adjusting the flow of gas within the conduit. Or devices arranged to limit injection. 제12항에 있어서, 상기 흡출관이 내부에 하나 또는 그 이상의 구멍을 갖추고 있으며, 가스가 상기 구멍을 거쳐서 상기 흡출관으로 다시 들어가도록 상기 도관 및 흡출관 사이, 및 상기 도관내에서 상승할 수 있는 장치.13. The draft tube of claim 12 wherein the draft tube has one or more apertures therein and is capable of ascending between and within the conduit and the draft tube such that gas enters the draft tube through the aperture. Device. 제12항 또는 13항에 있어서, 상기 흡출관이 노즐에 인접한 비교적 좁은 상단부를 갖추고 있으며, 비교적 넓은 중간 구간에 대하여 아랫쪽 외부로 벌어지고, 다음에는 아랫쪽 내부로 가늘어져서 상기 상단부 보다는 넓고 상기 중간 구간보다는 좁은 개방 하단부로 끝나는 장치.14. The discharge tube according to claim 12 or 13, wherein the draft tube has a relatively narrow upper end adjacent to the nozzle, spreads outward with respect to the relatively wide middle section, and then tapered inward with the lower section and is wider than the upper section and rather than the middle section. Device that ends with a narrow open bottom. 제12항 또는 13항에 있어서, 상기 흡출관이 상기 노즐에 인접한 비교적 넓은 상단부를 갖추고 있으며, 비교적 좁은 중간 구간을 향하여 아랫쪽 내부로 가늘어지고, 다음에는 아랫쪽 외부로 벌어져서 개방된 하단부로 끝나는 장치.14. An apparatus according to claim 12 or 13, wherein the draft tube has a relatively wide top end adjacent to the nozzle, tapering inward to the bottom toward a relatively narrow intermediate section, and then ending with an open bottom end opening to the outside outside. 제7항 내지 제15항중 어느 한 항에 있어서, 상기 도관이 원형 단면을 갖추고 있거나 또는 다른 형상의 단면을 갖추고 있으며, 이러한 다른 형상의 단면이 짧은 가로축, 및 이와 비슷한 긴 가로축을 가지며, 동등한 면적을 갖는 원의 지름과 동일한 유효지름을 가지며, 상기 도관의 지름이 상기 노즐 지름의 2배 내지 20배인 장치.16. The conduit according to any one of claims 7 to 15, wherein the conduit has a circular cross section or a cross section of another shape, wherein the cross section of this other shape has a short transverse axis and similar long transverse axis and has an equivalent area. Apparatus having an effective diameter equal to the diameter of the circle, wherein the diameter of the conduit is two to twenty times the diameter of the nozzle. 제16항에 있어서, 상기 도관의 지름이 상기 노즐 지름의 3배 내지 12배인 장치.17. The apparatus of claim 16 wherein the diameter of the conduit is three to twelve times the diameter of the nozzle. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930700577A 1990-08-27 1991-08-27 Aeration of liquid KR930702065A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPK197490 1990-08-27
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ZA916774B (en) 1992-05-27
EP0546033A4 (en) 1994-02-02
WO1992003218A1 (en) 1992-03-05
EP0546033A1 (en) 1993-06-16
MX9100830A (en) 1992-04-01
CN1060453A (en) 1992-04-22
CA2090619A1 (en) 1992-02-28
WO1992003220A1 (en) 1992-03-05
WO1992003219A1 (en) 1992-03-05
MX9100829A (en) 1992-04-01
JPH06500260A (en) 1994-01-13
ZA916775B (en) 1992-05-27

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