JPH0456680B2 - - Google Patents
Info
- Publication number
- JPH0456680B2 JPH0456680B2 JP60209575A JP20957585A JPH0456680B2 JP H0456680 B2 JPH0456680 B2 JP H0456680B2 JP 60209575 A JP60209575 A JP 60209575A JP 20957585 A JP20957585 A JP 20957585A JP H0456680 B2 JPH0456680 B2 JP H0456680B2
- Authority
- JP
- Japan
- Prior art keywords
- stirring blade
- draft tube
- stirring
- tank
- drainage tank
- 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
-
- 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
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2332—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements the stirrer rotating about a horizontal axis; Stirrers therefor
-
- 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
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
- B01F23/23341—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer with tubes surrounding the stirrer
-
- 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
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2335—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer
- B01F23/23354—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer the gas being driven away from the rotating stirrer
-
- 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
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
- B01F23/23366—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced in front of the stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/25—Mixers with both stirrer and drive unit submerged in the material being mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1144—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections with a plurality of blades following a helical path on a shaft or a blade support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Removal Of Floating Material (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はビル排水槽の腐敗防止用曝気装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aeration device for preventing spoilage of building drainage tanks.
地下部分に生活あるいは商業空間を有するビル
その他の建造物において、該ビル等内で生じる雑
排水は一般的にビル等の最深部に設けた排水槽に
一旦自然流下により集め、排水ポンプにて公共下
水道へ排水している。これは公共下水道よりもビ
ル用排水槽が低い位置に設けられるためである。
勿論このビル内の排水が直接公共下水道へ排水で
きるならばビル用排水槽や貯留槽は設けなくても
よい。
In buildings and other structures that have living or commercial spaces underground, gray water generated within the building is generally collected by gravity into a drainage tank installed in the deepest part of the building, and then released to the public using a drainage pump. Drained into the sewer. This is because building drainage tanks are located lower than public sewer systems.
Of course, if the waste water inside the building can be drained directly to the public sewer system, there is no need to provide a building drainage tank or storage tank.
このようなビル排水槽内にはビル内に生じる雑
排水が流入し、貯留されるため、排水とともに有
機物が流入しこれが槽内に貯留されるとき、嫌気
性腐敗し、悪臭を発することがしばしばある。こ
のためブロアを設置して排水槽から生じる悪臭成
分を大気中へ強制排気する方法が試みられている
が流入水及び排出水量により液位変動が生じる結
果、液面のピストン効果によつてブロアによる排
出機能が阻害され、充分な効果をあげることがで
きなかつた。 Gray water generated within the building flows into these building drainage tanks and is stored there, so when organic matter flows in with the wastewater and is stored in the tank, it often rots anaerobically and produces a foul odor. be. For this reason, attempts have been made to install a blower to forcibly exhaust the malodorous components generated from the drainage tank into the atmosphere, but as a result of fluctuations in the liquid level due to the amount of inflow and discharge water, the piston effect of the liquid level causes the blower to The excretion function was inhibited, and the drug could not produce sufficient effects.
本発明は排水槽の液位が変動しても常に槽内へ
空気を吹き込み曝気を行つて有機物の嫌気性腐敗
を未然に防止することを目的とする。 An object of the present invention is to prevent anaerobic decay of organic matter by constantly blowing air into the tank for aeration even if the liquid level in the tank fluctuates.
ビル用排水槽の槽底に水中モータにて駆動され
る撹拌羽根をドラフトチユーブ内に配設し、かつ
この撹拌羽根の先端部分に開口する空気吹込管を
設け、撹拌羽根の駆動にて液中に発生する負圧を
利用して空気を吹込管を経て吸入し、液面附近に
浮遊するスカムをドラフトチユーブ内へ流入せし
めて前記羽根にて破砕と同時に排水の撹拌・曝気
を行なわしめる。
A stirring blade driven by a submersible motor is installed in the draft tube at the bottom of the building drainage tank, and an air blowing pipe is provided at the tip of the stirring blade to blow water into the liquid. Air is sucked in through the blowing pipe using the negative pressure generated, and the scum floating near the liquid surface is forced to flow into the draft tube, and the vanes crush the scum and at the same time stir and aerate the waste water.
以下本発明を図面に示す実施例にもとづいて説
明する。
The present invention will be explained below based on embodiments shown in the drawings.
図において１はビルの最地階槽に所要容積を有
するように設けた排水槽で、この排水槽１の槽底
２の所望位置に曝気装置３を設置する。この曝気
装置３は水中モータ（または油圧モータ）４と、
撹拌軸５ａと撹拌羽根５ｂと、ドラフトチユーブ
６と空気吹込管７とより成る。水中モータ４は槽
底に固定されるとともにこの水中モータ４に上端
６ａがラツパ状に拡開し、下部６ｂは槽底に沿う
ようにＬ字形に屈曲したドラフトチユーブ６を一
体に設け、このドラフトチユーブ内に前記モータ
にて駆動される撹拌羽根５を設ける。そしてこの
ドラフトチユーブ６には空気吹込管７を突設す
る。この空気吹込管７の上端は水位が変動しても
常に大気中に開口するようにしてしかも所要の空
気量が液中に吹き込まれるようにした径を有する
パイプであつて、その下端開口面を撹拌羽根７の
回動にて液中に発生する負圧ゾーン内に位置する
ようになす。 In the figure, reference numeral 1 denotes a drainage tank provided on the lowest floor of a building to have a required volume, and an aeration device 3 is installed at a desired position on the bottom 2 of this drainage tank 1. This aeration device 3 includes a submersible motor (or hydraulic motor) 4,
It consists of a stirring shaft 5a, a stirring blade 5b, a draft tube 6, and an air blowing tube 7. The submersible motor 4 is fixed to the bottom of the tank, and the upper end 6a of the submersible motor 4 is expanded in a trundle shape, and the lower part 6b is integrally provided with a draft tube 6 bent in an L-shape along the bottom of the tank. A stirring blade 5 driven by the motor is provided inside the tube. An air blowing pipe 7 is provided protruding from this draft tube 6. The upper end of this air blowing pipe 7 is a pipe having a diameter such that it is always open to the atmosphere even when the water level fluctuates, and the required amount of air is blown into the liquid. It is positioned within a negative pressure zone generated in the liquid by the rotation of the stirring blade 7.
而して上述の如く構成する装置において、水中
モータ４を駆動すると駆動軸に取り付けた撹拌羽
根５ｂが回動し、槽内に排水を撹拌する。これに
よりこの羽根先端部分の液中に負圧が発生する。
この負圧にて空気吹込管７にて大気中より空気が
液中に吹き込まれるとともにドラフトチユーブ内
の液の撹拌流とともに混合され、ドラフトチユー
ブ前方向へ押し出される。この液中への空気吹き
込みにより排水中の有機物の好気性発酵を促進す
るものとなる。これは嫌気性発酵を防ぎ、悪臭発
生を抑制されるものとする。さらにこのドラフト
チユーブ６の上部開口面は液面下において上向き
に位置しているため液面附近に浮遊しているスカ
ム８は撹拌羽根の駆動にてドラフトチユーブ内へ
流入される排水とともに該チユーブ内へ流入さ
れ、前記撹拌羽根によつて破砕される。従つて水
中に配設される曝気装置にて排水槽内の撹拌と曝
気とさらには浮遊スカムの破砕も同時に行われる
ものである。 In the apparatus configured as described above, when the submersible motor 4 is driven, the stirring blade 5b attached to the drive shaft rotates to stir the waste water in the tank. This generates negative pressure in the liquid at the tip of the blade.
At this negative pressure, air is blown into the liquid from the atmosphere through the air blowing pipe 7, mixed with the stirring flow of the liquid in the draft tube, and pushed out toward the front of the draft tube. By blowing air into the liquid, aerobic fermentation of organic matter in the waste water is promoted. This prevents anaerobic fermentation and suppresses the generation of bad odors. Furthermore, since the upper opening surface of the draft tube 6 is located upward below the liquid surface, the scum 8 floating near the liquid surface is absorbed into the draft tube along with the waste water flowing into the draft tube by the drive of the stirring blade. and is crushed by the stirring blade. Therefore, the aeration device installed underwater simultaneously performs stirring and aeration in the drainage tank, as well as crushing the floating scum.
次に本発明の水中曝気装置を用いた場合と、何
も用いず放置した場合の結果を比較すると次の通
りである。 Next, the results when using the underwater aeration device of the present invention and when leaving it alone without using it are as follows.
Ａ 試験内容
１ 臭気測定
悪臭４物質（H2S、MM、DMS、DMDS）
について測定した。A Test details 1 Odor measurement 4 foul odor substances (H 2 S, MM, DMS, DMDS)
were measured.
２ 水処理性能 (1) 曝気前 BOD、COD、SS、Ｔ−Ｎ、PO4−Ｐ (2) 曝気後 BOD、COD、SS、Ｔ−Ｎ、PO4−Ｐ ３ 騒音・振動 曝気装置による騒音・振動を測定した。 2 Water treatment performance (1) Before aeration BOD, COD, SS, TN, PO 4 -P (2) After aeration BOD, COD, SS, TN, PO 4 -P 3 Noise/vibration Noise from aeration equipment・Vibration was measured.
Ｂ 試験結果 (1) 臭気測定の結果を第２図に示す。B Test results (1) Figure 2 shows the results of odor measurement.
曝気装置を用いることにより、硫化水素
（H2S）は、1/5に、メチルメルカプタン
（MM）は1/2000に、硫化メチル（DMS）は
１／４に、二硫化メチル（DMDS）は1/1.8に
減少した。 By using an aeration device, hydrogen sulfide (H 2 S) is reduced to 1/5, methyl mercaptan (MM) is reduced to 1/2000, methyl sulfide (DMS) is reduced to 1/4, and methyl disulfide (DMDS) is reduced to 1/5. It decreased to 1/1.8.
通常であれば、9/13の清掃前の値に近づい
ているはずであり、顕著な曝気効果が認めら
れた。 Normally, the value would have been close to the value before the cleaning on September 13th, and a significant aeration effect was observed.
(2) 水質測定の結果を第３図に示す。 (2) Figure 3 shows the results of water quality measurements.
水質は曝気を行つてもほとんど変化がなか
つた。 There was almost no change in water quality even after aeration.
(3) 騒音は、69〜74dB(A)でありほとんど問題
かつた。 (3) Noise was 69 to 74 dB(A) and was hardly a problem.
(4) 振動は、５〜10μｍでありほとんど問題な
かつた。 (4) The vibration was 5 to 10 μm and caused almost no problem.
本発明によるときは、ビル排水槽内にしかも水
中に没するようにして配設したドラフトチユーブ
内に撹拌羽根を設け、かつこの撹拌羽根の駆動に
よつて生じる液中の負圧内へ空気を吹き込む空気
吹込管を設けているため、撹拌羽根の駆動によつ
て自然に空気が液中へ吹き込まれて所望の撹拌と
曝気が行え、悪臭の発生を防止できる。またドラ
フトチユーブの上部開口面を液面下で上向きとし
ているため液面附近に浮遊するスカムを吸い込
み、前記羽根で破砕できる利点もある。
According to the present invention, a stirring blade is provided in a draft tube disposed in a building drainage tank so as to be submerged in water, and air is introduced into the negative pressure in the liquid generated by driving the stirring blade. Since an air blowing pipe is provided, air is naturally blown into the liquid by driving the stirring blade, allowing desired stirring and aeration to be performed and preventing the generation of bad odors. Further, since the upper opening of the draft tube is directed upward below the liquid level, there is an advantage that scum floating near the liquid level can be sucked in and crushed by the blades.
第１図は断面図、第２図は臭気測定のグラフ
図、第３図は水質測定のグラフ図である。
１は排水槽、２は槽底、３は曝気装置、４は水
中モータ、５は撹拌羽根、６はドラフトチユー
ブ、７は空気吹込管、８はスカム。
FIG. 1 is a sectional view, FIG. 2 is a graph of odor measurement, and FIG. 3 is a graph of water quality measurement. 1 is a drainage tank, 2 is a tank bottom, 3 is an aeration device, 4 is a submersible motor, 5 is a stirring blade, 6 is a draft tube, 7 is an air blowing pipe, and 8 is a scum.
Claims (1)
て、水平に設けた撹拌軸に取り付ける撹拌羽根と
前記撹拌軸を回転させる水中モータと前記撹拌羽
根を囲んで設けられ、液面に向いて上部開口を有
し、前記撹拌軸の軸線方向に向いて下部開口を有
するドラフトチユーブとを設けるとともに撹拌羽
根の駆動によつて生ずる負圧を利用して、液面上
の空気を吸入する空気吹込管を設けたことを特徴
とするビル排水槽の腐敗防止用曝気装置。1 In an aeration device submerged in water in a building drainage tank, a stirring blade attached to a horizontally provided stirring shaft, a submersible motor for rotating the stirring shaft, and a submersible motor provided surrounding the stirring blade, with an upper opening facing the liquid surface. and a draft tube having a lower opening facing in the axial direction of the stirring shaft, and an air blowing tube for sucking air above the liquid surface using negative pressure generated by driving the stirring blade. An aeration device for preventing rot in a building drainage tank, characterized by the following:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60209575A JPS6268590A (en) | 1985-09-20 | 1985-09-20 | Aeration apparatus for preventing spoilage of building drain tank |
| KR1019860007850A KR940004632B1 (en) | 1985-09-20 | 1986-09-17 | Anti-corruption Aeration Device for Drainage Storage Tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60209575A JPS6268590A (en) | 1985-09-20 | 1985-09-20 | Aeration apparatus for preventing spoilage of building drain tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6268590A JPS6268590A (en) | 1987-03-28 |
| JPH0456680B2 true JPH0456680B2 (en) | 1992-09-09 |
Family
ID=16575103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60209575A Granted JPS6268590A (en) | 1985-09-20 | 1985-09-20 | Aeration apparatus for preventing spoilage of building drain tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6268590A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62129954U (en) * | 1986-02-12 | 1987-08-17 | ||
| JP2667979B2 (en) * | 1987-03-23 | 1997-10-27 | 工業技術院長 | Channeling ion implantation |
| JPS63189396U (en) * | 1987-05-28 | 1988-12-06 | ||
| JPH01218679A (en) * | 1988-02-26 | 1989-08-31 | Hitachi Kiden Kogyo Ltd | Method for preventing generation of scum and bad odor |
| JPH01218678A (en) * | 1988-02-26 | 1989-08-31 | Hitachi Kiden Kogyo Ltd | How to prevent scum generation |
| JPH0641678Y2 (en) * | 1989-03-13 | 1994-11-02 | 日立機電工業株式会社 | Aeration device |
| JPH03270798A (en) * | 1990-03-20 | 1991-12-02 | Hitachi Kiden Kogyo Ltd | Water area purifying apparatus |
| JP3291623B2 (en) * | 1999-01-14 | 2002-06-10 | 賢一 今子 | Gas-liquid mixing device |
| JP2007319787A (en) * | 2006-06-01 | 2007-12-13 | Asahi Organic Chem Ind Co Ltd | Method and apparatus for treating insoluble substance-containing waste water |
-
1985
- 1985-09-20 JP JP60209575A patent/JPS6268590A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6268590A (en) | 1987-03-28 |
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