JPH0420557Y2 - - Google Patents
Info
- Publication number
- JPH0420557Y2 JPH0420557Y2 JP1987129074U JP12907487U JPH0420557Y2 JP H0420557 Y2 JPH0420557 Y2 JP H0420557Y2 JP 1987129074 U JP1987129074 U JP 1987129074U JP 12907487 U JP12907487 U JP 12907487U JP H0420557 Y2 JPH0420557 Y2 JP H0420557Y2
- Authority
- JP
- Japan
- Prior art keywords
- air
- pipe
- drainage
- drain
- block
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000005273 aeration Methods 0.000 claims description 18
- 230000000630 rising effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 11
- 238000007689 inspection Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust 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
- 239000011148 porous material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003466 welding Methods 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)
- Jet Pumps And Other Pumps (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案は、曝気槽の水面下に配設されて水中に
空気を供給する送気管の内部に入つた水を排水す
るための排水装置に関するものである。[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention is designed to drain water that has entered the inside of an air pipe that is installed below the water surface of an aeration tank and supplies air into the water. This relates to a drainage system for water treatment.
（従来の技術）
実公昭59−33519号公報に示されているように、
都市下水等の排水処理には、酸素を供給すること
により増殖する微生物の浄化能力を利用する曝気
法が用いられている。(Prior art) As shown in Japanese Utility Model Publication No. 59-33519,
BACKGROUND ART An aeration method is used to treat wastewater such as urban sewage, which utilizes the purifying ability of microorganisms that proliferate by supplying oxygen.
この酵素の供給は、通常、曝気槽内の水の中に
空気を吹込むことによつて行なわれており、この
曝気槽の酸素の供給に関して、省エネルギという
社会的な要請によつて、吹込み空気量に対する酸
素の溶解量が多いすなわち酸素溶解効率が高い散
気装置が用いられる。 This enzyme is normally supplied by blowing air into the water in the aeration tank. An air diffuser is used that has a large amount of oxygen dissolved relative to the amount of air contained, that is, has a high oxygen dissolution efficiency.
この場合、散気装置には、極めて微少な気泡を
発生させるために微細な径の気孔を有する散気板
を用いるが、一方で、微細な径の気孔は目詰りし
易く、散気装置の寿命の低下や、送気に必要とす
るエネルギの増加を招くという問題がある。 In this case, a diffuser plate with pores of a minute diameter is used to generate extremely small air bubbles, but on the other hand, the pores of a minute diameter are easily clogged, and the diffuser is There are problems in that the lifespan is shortened and the energy required for air supply is increased.
この目詰りの原因としては、フイルタで除去で
きなかつた空気中の微細な塵埃の他に、停電や点
検等により空気ブロワーが停止したときに散気装
置から送気管内に侵入して送気管内に残留した混
合液（処理する水に活性汚泥が混合したもの）の
乾燥により生じる固形物質のダストがあげられ
る。 The cause of this clogging is not only fine dust in the air that cannot be removed by the filter, but also particles that enter the air pipe from the air diffuser when the air blower is stopped due to a power outage or inspection. Dust of solid substances generated by drying the mixed liquid (mixture of activated sludge with treated water) remaining in the water.
そこで、上記公報には、散気装置に空気を送る
ために曝気槽の水面下に配設された送気管に対
し、先端を水抜き孔として斜めに切断しかつその
上に空気孔（送気孔）を穿設した排水管（モイス
チヤーブロー配管）を垂直に差込み、エアーリフ
ト効果により、送気管内の水を排水する装置が提
案されている。 Therefore, the above-mentioned publication states that an air pipe installed under the water surface of an aeration tank in order to send air to an aeration device is cut diagonally at the tip with a drainage hole, and an air hole (air supply hole) is placed above it. ) has been proposed, in which a drainage pipe (moisture blow piping) is inserted vertically, and water in the air pipe is drained using the air lift effect.
（考案が解決しようとする問題点）
しかしながら、上記公報に示された排水装置
は、送気管に排水管を立てる構造のため、設置現
場での加工組立が多く必要で、設置が面倒であ
り、しかも、設置後には、排水装置が、送気管の
一部となつて一体不可分となるため、点検や交換
が困難である。(Problems to be Solved by the Invention) However, the drainage device disclosed in the above publication has a structure in which the drainage pipe is erected on the air pipe, which requires a lot of processing and assembly at the installation site, making installation cumbersome. Furthermore, after installation, the drainage device becomes a part of the air pipe and is inseparable, making inspection and replacement difficult.
そこで、本考案は、排水装置を、独立に製作で
きるようにするとともに、送気管に対して容易に
着脱できるようにするものである。 Therefore, the present invention enables the drainage device to be manufactured independently and to be easily attached to and detached from the air pipe.
（問題点を解決するための手段）
本考案は、曝気槽１の水面下に配設されて水中
に空気を供給する送気管３の内部に入つた水を排
水するための排水装置１０に関するもので、上記
送気管３に接続された排水ブロツク１１，１１
ａ，３１，３１ａと、この排水ブロツク１１，１
１ａ，３１，３１ａの上部に接続して大気中に開
口した排水管１２と、この排水管１２に設けられ
た開閉弁１３とを備え、上記排水ブロツク１１，
１１ａ，３１，３１ａは、その内部に上記排水管
１２に上部を連通する排水空間２２，３３を形成
し、この排水空間２２，３３の下側部に上記送気
管３に連通する水抜き孔２４を形成するととも
に、この排水空間２２，３３の上側部に送気管３
に連通して上記排水管１２にエアリフトによる上
昇水流を発生させる空気孔２５を形成したもので
ある。
(Means for Solving the Problems) The present invention relates to a drainage device 10 for draining water that has entered the inside of the air pipe 3 which is disposed below the water surface of the aeration tank 1 and supplies air into the water. And the drainage blocks 11, 11 connected to the air pipe 3
a, 31, 31a and this drainage block 11, 1
1a, 31, 31a, and an on-off valve 13 provided in the drain pipe 12,
11a, 31, 31a form inside thereof drainage spaces 22, 33 whose upper portions communicate with the above-mentioned drainage pipe 12, and drain holes 24 which communicate with the above-mentioned air supply pipe 3 in the lower parts of these drainage spaces 22, 33. At the same time, an air supply pipe 3 is formed on the upper side of the drainage spaces 22 and 33.
An air hole 25 is formed in the drain pipe 12 to communicate with the drain pipe 12 to generate an upward water flow due to an air lift.
（作用）
本考案の排水装置１０は、排水ブロツク１１，
１１ａ，３１，３１ａを予め独立に製作しておく
ことができ、そして、この排水ブロツク１１，１
１ａ，３１，３１ａを送気管３に接続し、この排
水ブロツク１１，１１ａ，３１，３１ａに排水管
１２を接続し、この排水管１２に開閉弁１３を設
けることで、容易に設置することができ、逆にそ
れぞれを取外すことで、容易に分解できるもので
ある。(Function) The drainage device 10 of the present invention includes a drainage block 11,
11a, 31, 31a can be manufactured independently in advance, and this drainage block 11, 1
1a, 31, 31a to the air pipe 3, connect the drain pipe 12 to the drain block 11, 11a, 31, 31a, and provide the drain pipe 12 with an on-off valve 13 for easy installation. On the contrary, it can be easily disassembled by removing each part.
（実施例）
本考案の排水装置の実施例を図面を参照して説
明する。(Example) An example of the drainage device of the present invention will be described with reference to the drawings.
第１図及び第２図において、１は曝気槽で、こ
の曝気槽１の底部には微細な径の気孔を有する多
数の散気装置２が設けられている。この多数の散
気装置２は曝気槽１の底部に沿つて水平に配設さ
れた送気管３の上に取付けられ、この送気管３は
ライザ管４及び空気本管５を介して図示しない空
気ブロワーに接続されており、この空気ブロワー
が、空気本管５からライザ管４及び送気管３を介
して水中の多数の散気装置２に空気を供給し、多
数の散気装置２が水中に空気を微少な気泡として
吹込むようになつている。 In FIGS. 1 and 2, 1 is an aeration tank, and the bottom of this aeration tank 1 is provided with a large number of air diffusers 2 having pores of fine diameter. These many air diffusers 2 are installed on air pipes 3 arranged horizontally along the bottom of the aeration tank 1, and the air pipes 3 supply air (not shown) through riser pipes 4 and air main pipes 5. The air blower supplies air from the air main pipe 5 through the riser pipe 4 and the air supply pipe 3 to the many air diffusers 2 underwater. It is designed to blow air into it in the form of tiny bubbles.
なお、送気管３は、１本のライザ管４と多数の
散気装置２を接続するために、ここでは、平面か
ら見て目の字状に連結されている。 Note that, in order to connect one riser pipe 4 and a large number of air diffusers 2, the air supply pipe 3 is connected in an eye shape when viewed from above.
そして、送気管３の端部には、排水装置１０が
接続されている。この排水装置１０は、送気管３
に接続された排水ブロツク１１と、この排水ブロ
ツク１１の上部に垂直に接続して大気中に開口し
た排水管１２と、この排水管１２に設けられた開
閉弁１３とで構成されている。 A drainage device 10 is connected to the end of the air pipe 3. This drainage device 10 includes an air pipe 3
It consists of a drain block 11 connected to the drain block 11, a drain pipe 12 vertically connected to the upper part of the drain block 11 and opened to the atmosphere, and an on-off valve 13 provided in the drain pipe 12.
上記排水ブロツク１１は、第３図及び第４図に
示すように、上記送気管３の端部を閉塞する盲フ
ランジ状の円板２１の外周から直径方向に有底の
排水空間２２を穿設し、この排水空間２２の開口
部に上記排水管１２を接続するための雌ねじ部２
３を形成し、さらに、送気管３内部の周壁近くに
連通する水抜き孔２４を円板２１の一側面から排
水空間２２の底部側に穿設するとともに、送気管
３内部の周壁近くに連通する空気孔２５を円板２
１の一側面から排水空間２２の雌ねじ部２３側に
穿設したもので、水抜き孔２４及び空気孔２５を
送気管３に対向させかつ雌ねじ部２３を上側にし
て送気管３に接続し、この雌ねじ部２３に排水管
１２を接続してある。 As shown in FIGS. 3 and 4, the drainage block 11 has a bottomed drainage space 22 bored in the diametrical direction from the outer periphery of a blind flange-shaped disk 21 that closes the end of the air pipe 3. and a female threaded portion 2 for connecting the drain pipe 12 to the opening of the drain space 22.
Further, a drain hole 24 is formed from one side of the disk 21 to the bottom side of the drainage space 22 and communicates with the vicinity of the peripheral wall inside the air pipe 3. The air holes 25 are connected to the disk 2.
The drain hole 24 and the air hole 25 are connected to the air pipe 3 with the drain hole 24 and the air hole 25 facing the air pipe 3 and the female thread part 23 facing upward, A drain pipe 12 is connected to this female threaded portion 23.
なお、空気孔２５は水抜き孔２４よりも小さく
しておく。 Note that the air hole 25 is made smaller than the drain hole 24.
そうして、通常の曝気処理時には、排水装置１
０の開閉弁１３を閉じておくことにより、図示し
ない空気ブロワーから空気本管５及びライザ管４
を介して送気管３に供給された空気は、そのまま
多数の散気装置２に入り、散気装置２から微少な
気泡として水中に吹込まれる。 Then, during normal aeration treatment, the drainage device 1
By closing the on-off valve 13 of 0, the air main pipe 5 and riser pipe 4 are removed from the air blower (not shown).
The air supplied to the air pipe 3 through the air pipe 3 directly enters a large number of air diffusers 2, and is blown into the water from the air diffusers 2 as minute bubbles.
そして、この状態で、空気ブロワーが停止する
と、送気管３内の圧力が次第に低下し、散気装置
２からの気泡の発生が無くなり、曝気槽１内の混
合液が散気装置２から送気管３に侵入する。 In this state, when the air blower stops, the pressure inside the air pipe 3 gradually decreases, the generation of bubbles from the air diffuser 2 stops, and the mixed liquid in the aeration tank 1 flows from the air diffuser 2 into the air pipe. Invade 3.
このように、送気管３に混合液が侵入した状態
で、空気ブロワーの運転を再開するときには、排
水装置１０の開閉弁１３を開く。すると、空気ブ
ロワーから空気本管５及びライザ管４を介して送
気管３に供給された空気は、その圧力によつて、
散気装置２よりも抵抗の少ない排水装置１０の排
水ブロツク１１に混合液を押出し、送気管３内の
混合液を排水装置１０の排水管１２から曝気槽１
の液面上に排水する。 In this manner, when the air blower is restarted with the mixed liquid entering the air pipe 3, the on-off valve 13 of the drainage device 10 is opened. Then, the air supplied from the air blower to the air supply pipe 3 via the air main pipe 5 and riser pipe 4 has the following pressure:
The mixed liquid is pushed out to the drainage block 11 of the drainage device 10, which has less resistance than the aeration device 2, and the mixed liquid in the air pipe 3 is transferred from the drainage pipe 12 of the drainage device 10 to the aeration tank 1.
Drain above the liquid level.
そうして、この際に、送気管３内の上部に水が
無い状態になると、混合液は排水ブロツク１１の
水抜き孔２４から排水空間２２及び排水管１２を
上昇するとともに、空気が排水ブロツク１１の空
気孔２５から排水管１２を上昇し、この空気によ
り排水管１２内に微少な空気層ができてエアリフ
トによる上昇水流が発生し、これによつて、送気
管３内の排水が促進されるとともに、送気管３内
の混合液をほぼ完全に排水することができる。 At this time, when there is no water in the upper part of the air pipe 3, the mixed liquid rises through the drain hole 24 of the drain block 11 into the drain space 22 and the drain pipe 12, and the air flows into the drain block. The air rises up the drain pipe 12 through the air holes 25 of 11, and this air creates a minute air layer in the drain pipe 12, generating an upward water flow due to the air lift, thereby promoting drainage in the air pipe 3. At the same time, the mixed liquid in the air pipe 3 can be almost completely drained.
次に、第５図は上記排水ブロツク１１を送気管
３の中間部たとえば第２図にＡで示す部分に使用
できるようにした変形例の排水ブロツク１１ａ
で、この排水ブロツク１１ａでは、水抜き孔２４
及び空気孔２５を円板２１の両側面に形成してあ
り、作用は上記排水ブロツク１１と同様である。 Next, FIG. 5 shows a modified example of a drainage block 11a in which the drainage block 11 can be used in the middle part of the air pipe 3, for example, the part indicated by A in FIG.
In this drainage block 11a, the drainage hole 24
Air holes 25 are formed on both sides of the disc 21, and the function is similar to that of the drainage block 11 described above.
また、第６図及び第７図は、他の実施例の排水
ブロツク３１で、この排水ブロツク３１は、送気
管３を閉塞する盲フランジ状の一対の円板３２の
間に排水空間３３を構成する短い管３４を溶接
し、この管３４の上側部に上記排水管１２を接続
するための雄ねじ筒３５を突設し、さらに、送気
管３内部の周壁近くに連通する複数の水抜き孔２
４を一方の円板３２の下側部から排水空間２２の
底部側に穿設するとともに、送気管３内部の周壁
近くに連通する複数の空気孔２５を一方の円板３
２の上側部から排水空間３３の上部側つまり雄ね
じ筒３５側に穿設したもので、水抜き孔２４及び
空気孔２５を送気管３に対向させかつ雄ねじ筒３
５を上側にして送気管３に接続し、この雄ねじ筒
３５に排水管１２を接続するようになつており、
作用は上記排水ブロツク１１，１１ａと同様であ
る。 Further, FIGS. 6 and 7 show a drainage block 31 of another embodiment, and this drainage block 31 forms a drainage space 33 between a pair of blind flange-shaped disks 32 that close the air pipe 3. A male threaded tube 35 for connecting the drain pipe 12 is protruded from the upper side of the pipe 34, and a plurality of drain holes 2 are provided near the circumferential wall inside the air pipe 3.
4 are drilled from the lower side of one disk 32 to the bottom side of the drainage space 22, and a plurality of air holes 25 communicating near the peripheral wall inside the air pipe 3 are formed in one disk 3.
2 from the upper side of the drainage space 33, that is, the male threaded tube 35 side, with the drain hole 24 and the air hole 25 facing the air pipe 3, and the male threaded tube 3
It is connected to the air supply pipe 3 with 5 facing upward, and the drain pipe 12 is connected to this male threaded cylinder 35.
The function is similar to that of the drainage blocks 11 and 11a.
さらに、第８図及び第９図は上記第６図及び第
７図の排水ブロツク３１を送気管３の中間部たと
えば第２図にＡで示す部分に使用できるようにし
た変形例の排水ブロツク３１ａで、この排水ブロ
ツク３１ａでは、水抜き孔２４及び空気孔２５を
両方の円板３２に形成してあり、作用は上記排水
ブロツク１１，１１ａ，３１と同様である。 Furthermore, FIGS. 8 and 9 show a modified example of a drainage block 31a in which the drainage block 31 shown in FIGS. In this drainage block 31a, drain holes 24 and air holes 25 are formed in both discs 32, and the function is similar to that of the drainage blocks 11, 11a, and 31 described above.
なお、上記各排水ブロツク１１，１１ａ，３
１，３１ａと排水管１２の接続は、雌ねじ部２３
や雄ねじ筒３５による螺着に限らず、溶接等の他
の接続方法を用いることができる。 In addition, each of the above-mentioned drainage blocks 11, 11a, 3
1, 31a and the drain pipe 12 are connected through the female threaded portion 23.
The connection method is not limited to screwing using the externally threaded cylinder 35, but other connection methods such as welding can be used.
上述したように、都市下水等の曝気処理に際し
て、停電や点検等により送気が停止すると、混合
液が送気管内に侵入し、この状態で、送気を再開
すると、送気管内に残留した混合液が乾燥して固
形物質のダストが発生し、これが、目詰りの原因
となるが、本願考案の排水装置によつて、送気管
内の排水ができるので、目詰りの発生を阻止する
ことができる。
As mentioned above, when aerating urban sewage, etc., if the air supply is stopped due to power outage or inspection, the mixed liquid will enter the air pipe, and if the air supply is restarted in this state, the liquid mixture will remain in the pipe. When the mixed liquid dries, solid substance dust is generated, which causes clogging. However, the drainage device of the present invention can drain the air inside the air pipe, thereby preventing clogging from occurring. I can do it.
また、本願考案の排水装置は、その主要部分と
なる排水ブロツクを予め独立に製作しておくこと
ができ、そして、この排水ブロツクを送気管に接
続し、この排水ブロツクに排水管を接続し、この
排水管に開閉弁を設けることで、曝気装置に容易
に設置することができ、逆にそれぞれを取外すこ
とで、容易に分解できるので、保守点検が容易で
ある。 Further, in the drainage device of the present invention, the drainage block, which is the main part, can be manufactured independently in advance, and this drainage block is connected to the air pipe, and the drainage pipe is connected to this drainage block. By providing the drain pipe with an on-off valve, it can be easily installed in the aeration device, and conversely, it can be easily disassembled by removing each, making maintenance and inspection easy.
図は本考案の排水装置の実施例を示し、第１図
は曝気槽の縦断面図、第２図はその平面図、第３
図は排水ブロツクの縦断面図、第４図は第３図の
−視断面図、第５図は第３図の排水ブロツク
の変形例の縦断面図、第６図は他の実施例の排水
ブロツクの縦断面図、第７図は第６図の−視
断面図、第８図は第６図の排水ブロツクの変形例
の縦断面図、第９図は第８図の−視断面図で
ある。
１……曝気槽、３……送気管、１１，，１１ａ，
３１，３１ａ……排水ブロツク、１２……排水
管、１３……開閉弁、２２，３３……排水空間、
２４……水抜き孔、２５……空気孔。
The figures show an embodiment of the drainage system of the present invention, in which Figure 1 is a longitudinal sectional view of an aeration tank, Figure 2 is a plan view thereof, and Figure 3 is a longitudinal sectional view of an aeration tank.
The figure is a vertical sectional view of a drainage block, FIG. 4 is a cross-sectional view taken from the side in FIG. 3, FIG. 5 is a vertical sectional view of a modification of the drainage block of FIG. 3, and FIG. FIG. 7 is a vertical sectional view of the block, FIG. 7 is a vertical sectional view of a modified example of the drainage block of FIG. 6, FIG. 9 is a sectional view of FIG. be. 1... Aeration tank, 3... Air pipe, 11,, 11a,
31, 31a... Drain block, 12... Drain pipe, 13... Open/close valve, 22, 33... Drain space,
24... Water drain hole, 25... Air hole.
Claims (1)
する送気管の内部に入つた水を排水するための排
水装置であつて、 上記送気管に接続された排水ブロツクと、この
排水ブロツクの上部に接続して大気中に開口した
排水管と、この排水管に設けられた開閉弁とを備
え、 上記排水ブロツクは、その内部に上記排水管に
上部を連通する排水空間を形成し、この排水空間
の下側部に上記送気管に連通する水抜き孔を形成
するとともに、この排水空間の上側部に送気管に
連通して上記排水管にエアリフトによる上昇水流
を発生させる空気孔を形成したことを特徴とする
排水装置。[Scope of Claim for Utility Model Registration] A drainage device for draining water that has entered the inside of an air pipe that is disposed below the water surface of an aeration tank and supplies air into the water, which is connected to the air pipe. The drain block is equipped with a drain block, a drain pipe connected to the upper part of the drain block and opened to the atmosphere, and an on-off valve provided on the drain pipe, and the drain block has an upper part connected to the drain pipe inside the drain block. A drainage space is formed in the lower part of this drainage space that communicates with the air pipe, and a drainage hole that communicates with the air pipe is formed in the upper part of this drainage space so that the rising water flow by the air lift is formed in the upper part of this drainage space. A drainage device characterized by forming air holes that generate air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987129074U JPH0420557Y2 (en) | 1987-08-25 | 1987-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987129074U JPH0420557Y2 (en) | 1987-08-25 | 1987-08-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6436099U JPS6436099U (en) | 1989-03-06 |
| JPH0420557Y2 true JPH0420557Y2 (en) | 1992-05-11 |
Family
ID=31383010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987129074U Expired JPH0420557Y2 (en) | 1987-08-25 | 1987-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420557Y2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706189B2 (en) | 1998-10-09 | 2004-03-16 | Zenon Environmental Inc. | Cyclic aeration system for submerged membrane modules |
| JP3859447B2 (en) * | 2000-12-22 | 2006-12-20 | 株式会社クボタ | Aeration method and apparatus |
| 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 |
| 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 |
| JP5324117B2 (en) * | 2008-03-31 | 2013-10-23 | 株式会社クボタ | Water treatment facility having a diffuser and a membrane concentrator equipped with the diffuser |
| JP5801182B2 (en) * | 2011-12-27 | 2015-10-28 | 三機工業株式会社 | Operation method of air diffuser system |
-
1987
- 1987-08-25 JP JP1987129074U patent/JPH0420557Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6436099U (en) | 1989-03-06 |
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