GB1281630A - Improvements in or relating to apparatus for diffusing gas in a fluid - Google Patents
Improvements in or relating to apparatus for diffusing gas in a fluidInfo
- Publication number
- GB1281630A GB1281630A GB5354970A GB5354970A GB1281630A GB 1281630 A GB1281630 A GB 1281630A GB 5354970 A GB5354970 A GB 5354970A GB 5354970 A GB5354970 A GB 5354970A GB 1281630 A GB1281630 A GB 1281630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- cavities
- relating
- fluid
- aerating
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- 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
-
- 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
- B01F23/23122—Diffusers having elements opening under air pressure, e.g. valves
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
1281630 Agitating and aerating liquids. DRAVO CORP 11 Nov 1970 [24 June 1970] 53549/70 Heading B1C A diffuser primarily for aerating sewage has a gas chamber 20 and two transverse rectangular cavities 30 closed by a flexible strip member 24 which is secured in the middle by a transverse member 36 so that in operation the strip, and the gas passing over the cavities, vibrate at the resonant frequency of the gas in the cavities 30. The member 24 may be tapered in thickness towards the ends, see Fig. 5 (not shown). The resonance causes a higher amplitude and/or frequency of vibration, shearing the gas bubble to promote a more uniform discharge of smaller bubbles and thus an increased rate of oxygen transfer, as well as causing high local turbulence.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4936970A | 1970-06-24 | 1970-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1281630A true GB1281630A (en) | 1972-07-12 |
Family
ID=21959446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5354970A Expired GB1281630A (en) | 1970-06-24 | 1970-11-11 | Improvements in or relating to apparatus for diffusing gas in a fluid |
Country Status (3)
Country | Link |
---|---|
US (1) | US3722836A (en) |
FR (1) | FR2078319A5 (en) |
GB (1) | GB1281630A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8287175B2 (en) | 2006-10-30 | 2012-10-16 | Perlemax Limited | Bubble generation for aeration and other purposes |
WO2014060740A1 (en) | 2012-10-15 | 2014-04-24 | Perlemax Limited | Bubble generation to strip components of a liquid |
US10377651B2 (en) | 2006-10-30 | 2019-08-13 | Perlemax Ltd | Bubble generation for aeration and other purposes |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4279742A (en) * | 1976-12-20 | 1981-07-21 | Institute Po Physikochimia | Method of and apparatus for the flotation of mineral raw materials |
HU175820B (en) * | 1977-04-27 | 1980-10-28 | Richter Gedeon Vegyeszet | Charge, mainly in equipments for contacting gaseous and liquid media |
US4337151A (en) * | 1980-12-29 | 1982-06-29 | Red Fox Industries Inc. | Method and apparatus for pulsed timed control for sludge return line |
US4495114A (en) * | 1984-01-17 | 1985-01-22 | Strauss Walter C | Leaf spring diffuser with amplitude limit |
US4815653A (en) * | 1987-02-19 | 1989-03-28 | Serve-All, Inc. | Automatic removal of storage bin build-up |
US5129553A (en) * | 1990-06-05 | 1992-07-14 | The Heil Company | Aeration device |
US6629773B2 (en) * | 2001-05-07 | 2003-10-07 | Richard E. Parks | Method and apparatus for gas induced mixing and blending of fluids and other materials |
-
1970
- 1970-06-24 US US3722836D patent/US3722836A/en not_active Expired - Lifetime
- 1970-11-11 GB GB5354970A patent/GB1281630A/en not_active Expired
-
1971
- 1971-02-08 FR FR7104079A patent/FR2078319A5/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8287175B2 (en) | 2006-10-30 | 2012-10-16 | Perlemax Limited | Bubble generation for aeration and other purposes |
US10377651B2 (en) | 2006-10-30 | 2019-08-13 | Perlemax Ltd | Bubble generation for aeration and other purposes |
WO2014060740A1 (en) | 2012-10-15 | 2014-04-24 | Perlemax Limited | Bubble generation to strip components of a liquid |
Also Published As
Publication number | Publication date |
---|---|
FR2078319A5 (en) | 1971-11-05 |
US3722836A (en) | 1973-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |