JPH0248025Y2 - - Google Patents
Info
- Publication number
- JPH0248025Y2 JPH0248025Y2 JP1986152572U JP15257286U JPH0248025Y2 JP H0248025 Y2 JPH0248025 Y2 JP H0248025Y2 JP 1986152572 U JP1986152572 U JP 1986152572U JP 15257286 U JP15257286 U JP 15257286U JP H0248025 Y2 JPH0248025 Y2 JP H0248025Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- diffuser plate
- holder
- center
- bubbles
- 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
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000010800 human waste Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、下水、し尿、産業廃水などの汚水
処理用エアレーシヨン装置のデイフユーザーに関
するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a differential user of an aeration device for treating wastewater such as sewage, human waste, and industrial wastewater.
下水道や産業廃水などの汚水処理装置において
は、微生物を利用して有機性溶解物および固形物
を分解し、無機物等にして処理する活性汚泥法が
知られている。この活性汚泥法においては、微生
物に酸素を供給するためエアレーシヨン装置が用
いられており、その散気装置として種々のデイフ
ユーザーが知られている。
2. Description of the Related Art In sewage treatment equipment for sewerage, industrial wastewater, and the like, an activated sludge method is known in which microorganisms are used to decompose organic dissolved matter and solid matter into inorganic matter and the like. In this activated sludge method, an aeration device is used to supply oxygen to microorganisms, and various diffusers are known as such aeration devices.
例えば、散気板が円形ドーム型の多孔質セラミ
ツク板で構成され、内部より加圧空気を供給しド
ーム上部より微細気泡が発生するもの（PPM−
1985年４月号47頁）、散気板として円形多孔質セ
ラミツク板を用いたもの（PPM−1985年10月号
35頁）や、長方形セラミツク板を用いたもの等が
公知でありり、また、多孔質樹脂製の散気板を用
いた微細気泡型のデイフユーザーも公知である。 For example, the diffuser plate is composed of a circular dome-shaped porous ceramic plate, which supplies pressurized air from inside and generates fine bubbles from the top of the dome (PPM-
(April 1985 issue, p. 47), using a circular porous ceramic plate as an air diffuser (PPM-October 1985 issue)
(p. 35) and those using a rectangular ceramic plate are known, and a micro-cell type diffuser using a porous resin diffuser plate is also known.
これら公知のデイフユーザーにおいては、多孔
質セラミツク板や多孔質樹脂板で構成される散気
板が均一の厚さを持ち、散気板の全面から均等に
微細気泡が散気されるようになつている。 In these known diff users, the diffuser plate made of porous ceramic plate or porous resin plate has a uniform thickness, so that fine bubbles can be diffused evenly from the entire surface of the diffuser plate. It's summery.
上記のように、従来公知のデイフユーザーにお
いては、散気板が均一の厚さを持ち、散気板の全
面から均等に微細気泡が散気されるように構成さ
れていたが、周辺部に比し中心部において気泡の
会合が生じ易く、気泡が粗大化して効率低下を招
くという問題点があつた。また、運転停止時に水
が逆流して散気板に目詰まりが生じることも屡々
であつた。
As mentioned above, in conventional diffuser users, the diffuser plate has a uniform thickness and is configured so that fine bubbles are diffused evenly from the entire surface of the diffuser plate. There was a problem in that bubbles were more likely to aggregate in the center compared to the previous method, and the bubbles became coarser, resulting in a decrease in efficiency. Furthermore, when the operation was stopped, water often flowed back and clogged the air diffuser plate.
この考案は、上記問題点を解決することを目的
としてなされたものである。 This invention was made for the purpose of solving the above problems.
この考案は、散気板の全面から均一に散気され
るという従来の発想を転換し、中心部の散気量を
少なめに押さえ、周辺部に向うに従い順次散気量
を増大させるようにし、かつ、停止時に逆流を防
止するための逆止弁を設けることによつて、上記
問題点を解決したものであつた、多孔質セラミツ
ク又は多孔質樹脂よりなる散気板１をホルダー２
上にＯリング３を介して載置し周縁部をホルダー
キヤツプ４により固定してなるデイフユーザーに
おいて、前記散気板１の厚さを中心部より周縁部
に向うに従い順次減少させると共に、前記ホルダ
ー２の中心部に開口する空気供給管５に逆止弁６
を設けたことを特徴とする微細泡式デイフユーザ
ーを考案要旨とするものである。
This idea changes the conventional idea that air is diffused uniformly from the entire surface of the diffuser plate, and instead keeps the amount of air diffused at a small level in the center and gradually increases the amount of air diffused toward the periphery. In addition, the above-mentioned problem was solved by providing a check valve to prevent backflow when stopped.
In a diff user in which the air diffuser plate 1 is placed on top through an O-ring 3 and the peripheral edge is fixed by a holder cap 4, the thickness of the air diffuser plate 1 is gradually decreased from the center toward the peripheral edge. A check valve 6 is attached to the air supply pipe 5 that opens in the center of the holder 2.
The gist of this invention is a micro-bubble differential user characterized by the provision of a.
この考案は、以上のような構成であつた、散気
板１の表面が恰も凸レンズの如く中心部が厚く周
辺部が薄いので、中心部では空気の通気抵抗が高
くなり通気量が押さえられ、周縁部に向かうに従
い通気抵抗が低くなり順次通気量が増大すること
になる。このため、従来のように散気板の全面か
ら均等に散気されるのではなく、中心部より周縁
部に多く散気されることになる。したがつて、気
泡どうしの会合率が下がり、粗大気泡が生成する
ことなく、微細な独立気泡として液中に散乱し、
空気と液体との接触面積を広く保持することがで
き、酸素溶解効率が向上する。特に、風量が増大
するとその効果が大きい。
In this invention, the surface of the diffuser plate 1, which has the above-mentioned structure, is like a convex lens, thick at the center and thin at the periphery, so that the ventilation resistance of the air is high in the center and the amount of ventilation is suppressed. The ventilation resistance decreases toward the periphery, and the ventilation amount gradually increases. For this reason, air is not diffused evenly from the entire surface of the diffuser plate as in the conventional case, but more air is diffused toward the periphery than the center. Therefore, the association rate of bubbles decreases, and instead of forming coarse bubbles, they are scattered in the liquid as fine closed bubbles.
It is possible to maintain a wide contact area between air and liquid, improving oxygen dissolution efficiency. In particular, the effect becomes greater as the air volume increases.
また、通気を停止したときには、逆止弁６が即
座に作動し、曝気槽内の水が空気配管内に逆流す
ることなく、散気板１に目詰まりが生じることが
防止される。 Further, when the ventilation is stopped, the check valve 6 immediately operates, and the water in the aeration tank does not flow back into the air pipe, thereby preventing clogging of the air diffuser plate 1.
〔実施例〕
第１図は、ホルダー型の実施例であつて、ホル
ダー２を空気供給パイプ７に長いボルト・ナツト
８，９で固定し、シールはパツキング１０，１１
で行うようにしたものである。[Embodiment] Fig. 1 shows a holder-type embodiment, in which the holder 2 is fixed to the air supply pipe 7 with long bolts and nuts 8, 9, and the seal is made with packings 10, 11.
This is how it is done.
第２図は、ネジ込み式の実施例であつて、空気
供給パイプ７（第１図参照）に取付用ネジ込み座
を設け、ホルダー２下部のネジ１２部をネジ込み
固定するようにしたものである。 Fig. 2 shows a screw-in type embodiment in which a screw seat for mounting is provided on the air supply pipe 7 (see Fig. 1), and the screw 12 at the bottom of the holder 2 is screwed in to fix it. It is.
この考案によれば、多孔質セラミツク又は多孔
質樹脂よりなる散気板１をホルダー２上にＯリン
グ３を介して載置し周縁部をホルダーキヤツプ４
により固定してなるデイフユーザーにおいて、前
記散気板１の厚さを中心部より周縁部に向うに従
い順次減少させると共に、前記ホルダー２の中心
部に開口する空気供給管５に逆止弁６を設けたこ
とにより、散気板１からの散気量を中心部は少な
めとし周辺部に向かうに従い順次増大させるよう
にしたため、気泡の会合率が低下し粗大気泡の生
成が少なく微細気泡となつて散乱するため、液体
と空気との接触面積を大きく保つことができ、酸
素溶解効率が向上するという効果があり、また、
通気停止時に曝気槽内の水が空気配管内に逆流す
ることがないので、散気板に目詰まりが生じるお
それなく、長期の運転が可能であるといる効果も
併せ有するものである。
According to this invention, a diffuser plate 1 made of porous ceramic or porous resin is placed on a holder 2 via an O-ring 3, and the peripheral portion is connected to a holder cap 4.
In the differential user which is fixed with By providing the air diffuser plate 1, the amount of air diffused from the air diffuser plate 1 is small in the center and gradually increases toward the periphery, so that the association rate of air bubbles is reduced and coarse air bubbles are less generated and become fine air bubbles. This has the effect of increasing the contact area between the liquid and air, improving oxygen dissolution efficiency, and
Since water in the aeration tank does not flow back into the air pipe when ventilation is stopped, there is no risk of clogging of the air diffuser plate, and long-term operation is possible.
第１図及び第２図はいずれも本考案の構成を示
す実施例の断面図である。
１……散気板、２……ホルダー、３……Ｏリン
グ、４……ホルダーキヤツプ、５……空気供給
管、６……逆止弁、７……空気供給パイプ、８…
…ボルト、９……ナツト、１０……パツキング、
１１……パツキング、１２……ネジ。
FIG. 1 and FIG. 2 are both sectional views of an embodiment showing the structure of the present invention. DESCRIPTION OF SYMBOLS 1... Air diffuser plate, 2... Holder, 3... O-ring, 4... Holder cap, 5... Air supply pipe, 6... Check valve, 7... Air supply pipe, 8...
...Boruto, 9...Natsuto, 10...Patsuking,
11...Packing, 12...Screw.
Claims (1)
板１をホルダー２上にＯリング３を介して載置し
周縁部をホルダーキヤツプ４により固定してなる
デイフユーザーにおいて、前記散気板１の厚さを
中心部より周縁部に向うに従い順次減少させると
共に、前記ホルダー２の中心部に開口する空気供
給管５に逆止弁６を設けたことを特徴とする微細
気泡式デイフユーザー。 In a differential user in which a diffuser plate 1 made of porous ceramic or porous resin is placed on a holder 2 via an O-ring 3 and its peripheral portion is fixed by a holder cap 4, the thickness of the diffuser plate 1 is The micro-bubble type diff user is characterized in that the air pressure is gradually decreased from the center toward the periphery, and a check valve 6 is provided in the air supply pipe 5 opening at the center of the holder 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986152572U JPH0248025Y2 (en) | 1986-10-06 | 1986-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986152572U JPH0248025Y2 (en) | 1986-10-06 | 1986-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6358627U JPS6358627U (en) | 1988-04-19 |
| JPH0248025Y2 true JPH0248025Y2 (en) | 1990-12-17 |
Family
ID=31070675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986152572U Expired JPH0248025Y2 (en) | 1986-10-06 | 1986-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248025Y2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3986001B2 (en) * | 2002-03-14 | 2007-10-03 | 日本碍子株式会社 | Renewable diffuser |
| JP4716805B2 (en) * | 2005-06-23 | 2011-07-06 | 三菱電線工業株式会社 | Porous membrane material and diffuser |
| JP4704881B2 (en) * | 2005-10-13 | 2011-06-22 | ダイセン・メンブレン・システムズ株式会社 | Air diffuser |
| JP4539568B2 (en) * | 2006-01-17 | 2010-09-08 | Ｊｆｅエンジニアリング株式会社 | Air diffuser and diffuser |
| JP5262287B2 (en) * | 2007-12-27 | 2013-08-14 | Ｊｆｅエンジニアリング株式会社 | Air diffuser and method of operating the air diffuser |
| JP5062138B2 (en) * | 2007-12-27 | 2012-10-31 | Ｊｆｅエンジニアリング株式会社 | Cleaning method for air diffuser |
| JP6196941B2 (en) * | 2014-06-13 | 2017-09-13 | 住友重機械エンバイロメント株式会社 | Air diffuser plate, air diffuser and diffuser plate mounting method |
-
1986
- 1986-10-06 JP JP1986152572U patent/JPH0248025Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6358627U (en) | 1988-04-19 |
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