JPH07290042A - Waste water treating device - Google Patents
Waste water treating deviceInfo
- Publication number
- JPH07290042A JPH07290042A JP6114501A JP11450194A JPH07290042A JP H07290042 A JPH07290042 A JP H07290042A JP 6114501 A JP6114501 A JP 6114501A JP 11450194 A JP11450194 A JP 11450194A JP H07290042 A JPH07290042 A JP H07290042A
- Authority
- JP
- Japan
- Prior art keywords
- wastewater treatment
- treated
- liquid
- water
- gas
- 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.)
- Granted
Links
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)
- Physical Water Treatments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、各種工場や事業所あ
るいは家庭等から排出される排水中の混合微粒子や溶解
成分を除去する排水処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment apparatus for removing mixed fine particles and dissolved components in wastewater discharged from various factories, business establishments, households and the like.
【０００２】[0002]
【従来の技術】従来、例えば食品工場の米のとぎ汁等の
排水を処理する方法として、排水中の微粒子を気泡とと
もに浮上させて、水面上でその微粒子を回収する方法が
あった。ここで、排水中に気泡を発生させる手段は、加
圧ポンプあるいは加圧タンクを用いて、気体を排水中に
加圧溶解させ、この後、排水処理槽中で大気圧下に減圧
して気泡を発生させるものであった。2. Description of the Related Art Conventionally, as a method for treating wastewater such as rice bran juice of a food factory, there has been a method in which fine particles in the wastewater are floated together with air bubbles and the fine particles are collected on the water surface. Here, the means for generating bubbles in the wastewater is to pressurize and dissolve the gas in the wastewater using a pressure pump or a pressure tank, and then reduce the pressure to atmospheric pressure in the wastewater treatment tank to reduce the bubbles. Was generated.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の技術の加圧
ポンプを用いるものの場合、加圧ポンプ内に気体と液体
を一緒に送り込むため、その加圧ポンプ内でキャビテ−
ションが発生しやすくなり、ポンプ材質や構造が、キャ
ビテーションに対して強い材料に制限されるという問題
があった。さらに、ポンプに送り込む気体の種類によっ
ても、ポンプ材質が制限された。また、上記加圧タンク
を用いた場合は、加圧タンク内で気体と液体の反応や溶
解を行うため、加圧タンク内で液体が止まった状態にあ
る。したがって、連続的に気体と液体の反応や溶解をさ
せることができず、加圧タンクの大きさの割合に対して
気液の接触面積が小さく、気体を効率よく溶解させるこ
とができなかった。また、この方法では、気体と液体の
両方を加圧タンク内に圧送する必要があり、ポンプ等の
装置が大がかりになるという問題があった。In the case of using the above-mentioned conventional pressure pump, the gas and the liquid are sent together into the pressure pump, and therefore the cavity pump is used in the pressure pump.
However, the pump material and structure are limited to materials that are strong against cavitation. Furthermore, the material of the pump is also limited by the type of gas sent to the pump. Further, when the above pressure tank is used, the gas and the liquid react and dissolve in the pressure tank, so that the liquid is stopped in the pressure tank. Therefore, it is impossible to continuously react or dissolve the gas and the liquid, and the contact area of the gas and the liquid is small relative to the ratio of the size of the pressure tank, so that the gas cannot be efficiently dissolved. Further, in this method, it is necessary to pump both the gas and the liquid into the pressure tank, and there is a problem that a device such as a pump becomes large in size.
【０００４】この発明は、上記従来技術の問題点に鑑み
て成されたもので、連続的に効率よく排水中に気泡を発
生させることができ、迅速に排水中の微粒子を浮上させ
ることができる排水処理装置を提供することを目的とす
る。The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to continuously and efficiently generate bubbles in the drainage, and to quickly float the fine particles in the drainage. An object is to provide a wastewater treatment device.
【０００５】[0005]
【課題を解決するための手段】この発明は、事業所や家
庭等から排出される排水である被処理水をためて処理す
る排水処理槽と、所定の液体を流す流路の一部を絞った
ベンチュリ管やオリフィス等の絞り部と、この絞り部の
下流側で徐々に上記流路を広げた広がり部と、上記絞り
部のわずかに下流側で上記流路に空気を流入させる気体
流入口と、上記広がり部の下流側に設けられ上記液体に
空気が混合した気液混合流が流れる加圧混合流路と、こ
の加圧混合流路の下流側に設けられ上記排水処理槽中に
開口したノズル部材とを備えた排水処理装置である。ま
た、この加圧混合流路は、上記広がり部の下流側に設け
られ緩急を繰り返す勾配に形成され、上から下へ上記液
体及び空気が流れるものであり、この加圧混合流路の出
口または下流に上記出口側絞りが設けられたものであ
る。The present invention is directed to a wastewater treatment tank for accumulating and treating treated water, which is wastewater discharged from business establishments, households, etc., and a part of a flow path for flowing a predetermined liquid. A venturi tube, an orifice, etc., a narrowed portion, a widened portion that gradually widens the flow passage on the downstream side of the throttle portion, and a gas inlet for introducing air into the flow passage slightly downstream of the narrowed portion. And a pressurizing and mixing channel provided on the downstream side of the expanding portion and through which a gas-liquid mixed flow in which air is mixed with the liquid flows, and an opening in the wastewater treatment tank provided on the downstream side of the pressurizing and mixing channel. It is a wastewater treatment equipment provided with the said nozzle member. Further, the pressurized mixing channel is provided on the downstream side of the expanded portion and is formed in a gradient that repeats gradual movement, and the liquid and air flow from top to bottom. The outlet side throttle is provided downstream.
【０００６】また、この発明は、上記絞り部に続いて下
流側に設けられ上記流路方向に断面積の等しい気体流入
部を設け、この気体流入部に外部から空気を流入させる
気体流入口を形成し、上記気体流入口の下流側に上記流
路を徐々に広げた広がり部を設け、上記広がり部の下流
に上記流路中の液体と上記気体流入口から流入した空気
とを混合する加圧混合流路を設けた排水処理装置であ
る。さらに、上記絞り部を通過する上記液体は、上記排
水処理槽中の被処理水を処理した水が還流しているもの
である。Further, according to the present invention, a gas inflow portion which is provided downstream of the throttle portion and has the same cross-sectional area in the flow path direction is provided, and a gas inflow port for inflowing air from the outside is provided in the gas inflow portion. A widened portion is formed on the downstream side of the gas inlet, where the flow passage is gradually widened, and the liquid in the flow passage and the air flowing in from the gas inlet are mixed downstream of the widened portion. It is a wastewater treatment device provided with a pressure mixing channel. Further, the liquid that has passed through the narrowed portion is water in which the water to be treated in the wastewater treatment tank is treated and recirculates.
【０００７】また、この発明は、上記排水処理槽で処理
された被処理水をさらに処理する微生物処理槽を有し、
この微生物処理槽の下部にも上記加圧混合流路の出口側
に接続されたノズル部材が配置されているものである。
そして、この発明の排水処理装置により処理される排水
は、水中に有機物や無機物の微粒子が浮遊しているもの
であり、さらには、有機質成分が溶解しているものでも
よい。例えば、食品工場の廃水や、オイルや金属粉が混
合した工場排水、さらに、自動車修理工場やガソリンス
タンドの排水のようにオイルや砂等の各種の物質が混合
した排水等、少なくとも水中に溶解していない混合微粒
子を含んだものである。Further, the present invention has a microorganism treatment tank for further treating the water to be treated treated in the wastewater treatment tank,
A nozzle member connected to the outlet side of the pressurized mixing flow path is also arranged in the lower part of the microorganism treatment tank.
The wastewater treated by the wastewater treatment apparatus of the present invention may be one in which fine particles of an organic substance or an inorganic substance are suspended in water, and further, one in which an organic component is dissolved. For example, wastewater from food factories, factory wastewater mixed with oil and metal powder, and wastewater mixed with various substances such as oil and sand such as wastewater from automobile repair shops and gas stations, etc. It does not contain mixed particles.
【０００８】[0008]
【作用】この発明の排水処理装置は、絞り部のわずか下
流側の気体流入口から空気を流れの中に流入させ、流れ
が遅くなる広がり部で、空気と液体を混合させつつ流入
した空気を液体中に加圧溶解させて気液混合流を形成
し、被処理水にこの気液混合流を噴射することにより、
加圧溶解していた空気が微細気泡となって析出し、被処
理水中の粒子表面に気泡が付着し、被処理水中の微粒子
を浮上させるものである。また、必要に応じて、気液混
合流の空気の量を増やして、溶解しきらなかった空気が
ノズル部材から微細な気泡に剪断されて被処理水中に分
散されるようにし、より大量の気泡によって微粒子を浮
上させることも可能なものである。そして、浮上した被
処理水中の微粒子は、回収装置により集められ、液体と
は別に処理される。According to the waste water treatment apparatus of the present invention, air is introduced into the flow from the gas inlet on the downstream side of the narrowed portion, and the air that has flowed in is mixed with the liquid at the expanding portion where the flow becomes slow. By forming a gas-liquid mixed flow by dissolving under pressure in a liquid and injecting this gas-liquid mixed flow into the water to be treated,
The air that has been melted under pressure is deposited as fine bubbles, and the bubbles adhere to the surface of the particles in the water to be treated, causing the fine particles in the water to be treated to float. Also, if necessary, the amount of air in the gas-liquid mixed flow is increased so that the air that has not completely dissolved is sheared from the nozzle member into fine bubbles and dispersed in the water to be treated. It is also possible to float fine particles by. Then, the fine particles in the water to be treated that have floated are collected by the recovery device and treated separately from the liquid.
【０００９】[0009]
【実施例】以下この発明の排水処理装置の実施例につい
て図面を基にして説明する。図１、図２はこの発明の第
一実施例を示すもので、この実施例の排水処理装置によ
り処理される被処理水１は、米のとぎ汁等、有機物の微
粒子が混合しているとともに有機質成分が溶解した食品
工場等の排水である。この実施例の排水処理装置は、図
１に示すように、被処理水１が流路２を経て一旦溜めら
れて攪拌される攪拌槽３と、流路４を介して被処理水１
が流入し、被処理水１に混合した微粒子を浮上させる排
水処理槽である浮上槽５を有している。ここで、流路２
は攪拌槽３の下部に開口し、流路４は、攪拌槽３の上部
に開口し、この上部の開口部から被処理水１が流入し、
浮上槽５の下部に開口して、被処理水１を浮上槽５に供
給しているものである。さらに、浮上槽５の下部に開口
した流路６を介して、排水処理槽である微生物処理槽７
が浮上槽５に接続され、この流路６が、微生物処理槽７
の下部に開口している。そして、微生物処理槽７の下流
側に被処理水１から微粒子等を除去した処理水８をため
る処理水槽９が設けられている。Embodiments of the waste water treatment equipment of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a first embodiment of the present invention. The treated water 1 treated by the wastewater treatment apparatus of this embodiment is a mixture of fine particles of organic matter such as rice sharpening juice and organic matter. It is the wastewater of food factories etc. in which the ingredients are dissolved. As shown in FIG. 1, the wastewater treatment apparatus of this embodiment has a stirring tank 3 in which the water 1 to be treated is once stored through a flow path 2 and stirred, and a water 1 to be treated via a flow path 4.
Has a floating tank 5 which is a waste water treatment tank for floating fine particles mixed in the water 1 to be treated. Here, the flow path 2
Is opened in the lower part of the stirring tank 3, the flow path 4 is opened in the upper part of the stirring tank 3, and the water to be treated 1 flows in through the opening in the upper part.
The water to be treated 1 is supplied to the levitation tank 5 by opening at the bottom of the levitation tank 5. Furthermore, a microbial treatment tank 7 that is a wastewater treatment tank is provided through a flow path 6 that opens at the bottom of the floating tank 5.
Is connected to the flotation tank 5, and the flow path 6 is connected to the microorganism treatment tank 7
There is an opening at the bottom of. Further, a treated water tank 9 for collecting treated water 8 obtained by removing fine particles from the water to be treated 1 is provided on the downstream side of the microorganism treatment tank 7.
【００１０】この実施例の排水処理装置の攪拌槽３に
は、図１に示すように、攪拌装置１０が取り付けられて
いるとともに、被処理水１中の微粒子を凝集させるＰＡ
Ｃ等の凝集剤１２を、攪拌槽３内に供給する管路１３
が、ポンプ１４を介して取り付けられている。なお、こ
の凝集剤１２とともに図示しない中和剤や架橋剤等もこ
の攪拌槽３内に供給される。また、浮上槽５には、流路
４が開口した下部に、ノズル部材１５が取り付けられ、
ノズル部材１５に、管路１６を介して気液加圧混合装置
１７が接続されている。さらに、気液加圧混合装置１７
から管路１６が分岐して、微生物処理槽７にも接続さ
れ、微生物処理槽７の下部にも、ノズル部材１８が設け
られている。また、気液加圧混合装置１７には、処理水
槽９内の処理水８を還流させる管路１９が接続されてい
る。この管路１９の途中には、処理水８を気液加圧混合
装置１７に送り込むポンプ２５が設けられている。ま
た、浮上槽５には、浮上した微粒子であるスカム４０を
かき集めて回収する回収装置２１が設けられている。As shown in FIG. 1, a stirring device 10 is attached to the stirring tank 3 of the wastewater treatment equipment of this embodiment, and a PA for aggregating fine particles in the water 1 to be treated is provided.
Pipe line 13 for supplying coagulant 12 such as C into stirring tank 3
Are attached via a pump 14. In addition to the coagulant 12, a neutralizing agent, a cross-linking agent and the like (not shown) are also supplied into the stirring tank 3. Further, in the floating tank 5, a nozzle member 15 is attached to a lower portion where the flow path 4 is opened,
A gas-liquid pressure mixing device 17 is connected to the nozzle member 15 via a pipe 16. Furthermore, the gas-liquid pressure mixing device 17
A pipe line 16 is branched from and is also connected to the microorganism treatment tank 7, and a nozzle member 18 is provided below the microorganism treatment tank 7. Further, the gas-liquid pressurizing and mixing device 17 is connected to a pipe line 19 for returning the treated water 8 in the treated water tank 9. A pump 25 for feeding the treated water 8 to the gas-liquid pressurizing and mixing device 17 is provided in the middle of the pipeline 19. Further, the flotation tank 5 is provided with a collecting device 21 for collecting and collecting the scum 40, which is the fine particles that have floated.
【００１１】気液加圧混合装置１７には、図２に示すよ
うに、管路１９が接続された混合器２０と、気液加圧混
合器２２とが設けられ、さらに、図示しないバルブ等が
設けられている。混合器２０には、流路が狭くなった絞
り部である喉部２４が中央に設けられたベンチュリ管が
形成され、この喉部２４の下流に、喉部２４よりわずか
に内径が大きい円筒状の気体流入部２６が形成され、こ
の気体流入部２６の下流側に、滑らかにテーパ状に広が
った広がり部２８が形成されている。そして、この気体
流入部２６には、空気を流路中に混合させるための気体
流入口３０が形成されている。ここで、混合器２０に流
入する液体は、管路１９から還流された処理水８であ
る。また、喉部２４から噴出してきた液体の流れは、喉
部２４を通過の後コーン状に拡大するため、気体流入部
２６の長さには制限がある。即ち、喉部２４から流れが
所定の角度で広がり、その流れが気体流入部２６の壁面
に当たるまでの長さが最大値であると言える。As shown in FIG. 2, the gas-liquid pressurizing and mixing device 17 is provided with a mixer 20 to which a conduit 19 is connected and a gas-liquid pressurizing and mixing device 22, and a valve (not shown) or the like. Is provided. In the mixer 20, a Venturi tube having a throat portion 24, which is a narrowed portion having a narrowed flow path, is formed in the center, and downstream of the throat portion 24, a cylindrical shape having an inner diameter slightly larger than that of the throat portion 24 is formed. The gas inflow portion 26 is formed, and a spread portion 28 that smoothly spreads in a tapered shape is formed on the downstream side of the gas inflow portion 26. The gas inflow portion 26 is formed with a gas inflow port 30 for mixing air in the flow path. Here, the liquid that flows into the mixer 20 is the treated water 8 that has been refluxed from the conduit 19. Further, since the flow of the liquid ejected from the throat portion 24 expands in a cone shape after passing through the throat portion 24, the length of the gas inflow portion 26 is limited. That is, it can be said that the length of the flow from the throat portion 24 spreading at a predetermined angle until the flow reaches the wall surface of the gas inflow portion 26 is the maximum value.
【００１２】気液加圧混合器２２には、箱型に組まれて
水平部２３ａと垂直部２３ｂとが交互に段階的に設けら
れた加圧混合流路２３が形成されている。この加圧混合
流路２３には、適宜、図示しない排気口や中間絞り等が
取り付けられ、出口部３１には、出口側絞り３３が設け
られている。そして、出口側絞り３３は、管路１６を介
してノズル部材１５，１８に接続されている。ノズル部
材１５，１８には各々ノズル孔３２が形成されている。
なお、この加圧混合流路２３は、パイプ等の管路を折曲
げて形成したものでも良く、広がり部２８の下流側に設
けられ、緩急を繰り返す勾配に形成されて、上から下へ
液体及び空気が流れるものであれば良く、その形状は問
わないものである。The gas-liquid pressurizing mixer 22 is provided with a pressurizing and mixing passage 23, which is assembled in a box shape and in which horizontal portions 23a and vertical portions 23b are alternately provided stepwise. An unillustrated exhaust port, an intermediate throttle, and the like are appropriately attached to the pressurized mixing flow path 23, and an outlet side throttle 33 is provided in the outlet section 31. The outlet-side throttle 33 is connected to the nozzle members 15 and 18 via the conduit 16. Nozzle holes 32 are formed in the nozzle members 15 and 18, respectively.
The pressurized mixing flow path 23 may be formed by bending a pipe path such as a pipe, is provided on the downstream side of the spreading portion 28, is formed in a gradient that repeats gradual movement, and is a liquid from top to bottom. Also, any shape may be used as long as it allows air to flow.
【００１３】次に、この実施例の排水処理装置の作用に
付いて以下に説明する。先ず、被処理水１が工場から攪
拌槽３に送られ、攪拌槽３内で、凝集剤１２が添加され
て攪拌され、水中の微粒子がある程度凝集する。攪拌槽
３内の被処理水１は、その上部の液が流路４を経て、浮
上槽５に送られる。浮上槽５内では、被処理水１中に、
その下部の流路４の開口部付近で、ノズル部材１５から
気液混合流が噴射される。これにより、被処理水１中の
微粒子に、気液混合流中の気泡が付着し、気泡ととも
に、微粒子が水面下に浮上する。そして水面では、浮上
した微粒子であるスカム４０が、回収装置２１によりか
き集められ、回収される。Next, the operation of the waste water treatment equipment of this embodiment will be described below. First, the water to be treated 1 is sent from the factory to the agitation tank 3, and the aggregating agent 12 is added and agitated in the agitation tank 3, so that the fine particles in the water aggregate to some extent. The water 1 to be treated in the agitation tank 3 is sent to the levitation tank 5 with the liquid in the upper part passing through the flow path 4. In the floating tank 5, in the water 1 to be treated,
The gas-liquid mixed flow is jetted from the nozzle member 15 in the vicinity of the opening of the flow path 4 below it. Thereby, the bubbles in the gas-liquid mixed flow adhere to the fine particles in the water to be treated 1 and the fine particles float below the water surface together with the bubbles. Then, on the water surface, the scum 40, which is the floating fine particles, is scraped and collected by the collecting device 21.
【００１４】ここで、ノズル部材１５から噴射される気
液混合流は、気液加圧混合装置１７により製造されるも
ので、微粒子が除去された処理水８をポンプ２５により
管路１９を経て混合器２０へ所定の圧力で送り込み、ベ
ンチュリ管の喉部２４で加速させて、一旦静圧が低下し
た後空気を混合し、広がり部２８を経て流速が遅くなり
再び静圧を増大させたものである。この時、気体流入口
３０は、喉部２４のわずかに下流側であり、この部分の
静圧は相対的に負圧になっているため、空気がこの流路
中に流入する。なお、この気体流入口３０を喉部２４に
配置しないのは、喉部２４が最も静圧の低くなる部分で
はあるが、喉部２４に気体流入口３０を設けると、実際
には気体の吸い込みが良くなく、流路が広がり始めたと
ころの方が気体が流入しやすいためである。Here, the gas-liquid mixed flow injected from the nozzle member 15 is produced by the gas-liquid pressurizing and mixing device 17, and the treated water 8 from which fine particles have been removed is pumped through the conduit 19 by the pump 25. It is sent to the mixer 20 at a predetermined pressure, accelerated by the throat portion 24 of the Venturi tube, mixed with air after the static pressure is once reduced, and then the flow velocity is slowed down through the spreading portion 28 to increase the static pressure again. Is. At this time, the gas inlet 30 is slightly downstream of the throat portion 24, and the static pressure of this portion is relatively negative, so that air flows into this flow path. Although the gas inlet 30 is not arranged in the throat portion 24 at the portion where the static pressure is the lowest in the throat portion 24, when the gas inlet 30 is provided in the throat portion 24, the gas is actually sucked in. This is because the gas is not good, and the gas is more likely to flow in where the flow path starts to spread.
【００１５】混合器２０で空気が混合された処理水８
は、気液加圧混合器２２の内部で空気流れと処理水８の
流れに分離して流れる。このとき、空気と処理水８が加
圧下で互いに広い面積で接触した高接触状態になり、空
気の処理水８への溶解が促進される。その後、気液混合
流である処理水８は、出口側絞り３３を通り流出管路１
６から流出し、ノズル部材１５，１８へ送られる。Treated water 8 mixed with air in the mixer 20
Inside the gas-liquid pressurizing mixer 22 is separated into an air flow and a treated water 8 flow. At this time, the air and the treated water 8 are in a high contact state in which they are in contact with each other over a wide area under pressure, and the dissolution of the air in the treated water 8 is promoted. After that, the treated water 8 which is a gas-liquid mixed flow passes through the outlet side throttle 33 and the outflow conduit 1
6 and is sent to the nozzle members 15 and 18.
【００１６】浮上槽５で、混合有機物の微粒子を浮上分
離した後、被処理水１は、微生物処理槽７に送られ、微
生物の働きにより、被処理水１中に溶解した有機質成分
を分解除去する。この微生物処理槽７にも、上記気液混
合流を噴射することにより、被処理水１中の微生物がよ
り活発に作用し、被処理水１の処理を促進するものであ
る。After the fine particles of the mixed organic matter are floated and separated in the flotation tank 5, the water to be treated 1 is sent to the microorganism treatment tank 7, and the organic components dissolved in the water to be treated 1 are decomposed and removed by the action of the microorganisms. To do. By injecting the gas-liquid mixed flow into the microorganism treatment tank 7 as well, the microorganisms in the water 1 to be treated act more actively and accelerate the treatment of the water 1 to be treated.
【００１７】この実施例の排水処理装置では、混合器２
０の気体流入部２６と、ノズル孔３２との各々の総断面
積の関係は以下の式を満たすものであれば良い。 ＰＡ＜ＰＧ （１） ＰＡ＝（１−Ｓb2／Ｓa2）Ｐ1＋（δＰ＋Ｐb）Ｓb2／Ｓa2 （２） ＰＧは気体流入口３０から流入する気体の圧力 ＰＡは流体力学上のベルヌーイの定理と連続の式から与
えられる気体流入口３０の接続部位における気体流入部
２６の静圧 Ｓaは気体流入口３０の接続部位における気体流入部２
６の断面積 Ｓbはノズル孔３２の総断面積 Ｐ1は気体流入口３０の接続部位における気体流入部２
６の総圧 δＰは気体流入口３０の接続部位における気体流入部２
６からノズル孔３２までの圧力損失 Ｐbはノズル孔３２の静圧In the wastewater treatment equipment of this embodiment, the mixer 2
The relationship of the total cross-sectional area of each of the gas inflow portion 26 of 0 and the nozzle hole 32 may satisfy the following formula. PA <PG (1) PA = (1-Sb 2 / Sa 2 ) P 1 + (δP + Pb) Sb 2 / Sa 2 (2) PG is the pressure of gas flowing from the gas inlet 30 PA is hydrodynamic Bernoulli The static pressure Sa of the gas inflow part 26 at the connection part of the gas inflow port 30 given by the theorem and the continuity formula is the gas inflow part 2 at the connection part of the gas inflow port 30.
6 is the total cross-sectional area Sb of the nozzle hole 32, and P 1 is the total cross-sectional area P 1 of the nozzle hole 32.
The total pressure δP of 6 is the gas inflow part 2 at the connection part of the gas inflow port 30.
Pressure loss from 6 to nozzle hole 32 Pb is static pressure of nozzle hole 32
【００１８】なお、この混合器２０は、図２のように直
接気液加圧混合器２２に接続する他、管路を経て気液加
圧混合器２２に接続しても良い。また、出口側絞り３３
は、管路１６の途中又はノズル部材１５，１８と兼用し
ても良いものである。さらに、気液加圧混合器２２の加
圧混合流路２３は、パイプ等の管状のものを、蛇行させ
て形成しても良く、緩急を繰り返す勾配の流路を経て気
液混合流が流れるようにしたものであれば良い。The mixer 20 may be directly connected to the gas-liquid pressurizing mixer 22 as shown in FIG. 2, or may be connected to the gas-liquid pressurizing mixer 22 via a conduit. In addition, the outlet side throttle 33
May be used in the middle of the conduit 16 or as the nozzle members 15 and 18. Further, the pressure-mixing flow path 23 of the gas-liquid pressure mixer 22 may be formed by making a tubular shape such as a pipe meander, and the gas-liquid mixed flow flows through a flow path having a gradient that repeats gradual change. If it is done like this.
【００１９】この実施例の排水処理装置によれば、気液
加圧混合装置１７により、被処理水１中の混合微粒子が
除去された処理水８に空気を加圧混合して、浮上槽５中
に噴射しているので、浮上槽５中には、減圧されて析出
した気泡が大量に分散され、凝集剤１２により凝集され
た微粒子に、小さい気泡が大量に付着し、微粒子を迅速
に浮上させるものである。しかも、気液混合流を形成す
るための立ち上がり時間が短く、処理水８の還流ととも
に、大量に空気が溶解した状態にすることができるもの
である。又、この実施例の排水処理装置は、被処理水１
を循環させるようにして、気液混合流を形成しているの
で、無駄がなく効率の良いものである。さらに、この気
液混合流を、微生物処理槽７にも噴射しているので、被
処理水１中の微生物に大量の酸素が行きわたり、微生物
が活性化し、効率よく働くものである。According to the waste water treatment apparatus of this embodiment, the gas-liquid pressurizing and mixing apparatus 17 pressurizes and mixes air with the treated water 8 from which the mixed fine particles in the treated water 1 have been removed, and the levitation tank 5 Since it is injected inside, a large amount of air bubbles that have been depressurized and deposited are dispersed in the levitation tank 5, and a large amount of small air bubbles are attached to the fine particles that have been agglomerated by the aggregating agent 12, so that the fine particles quickly float. It is what makes me. Moreover, the rise time for forming the gas-liquid mixed flow is short, and a large amount of air can be dissolved along with the reflux of the treated water 8. In addition, the wastewater treatment equipment of this embodiment is such that the treated water 1
Since the gas-liquid mixed flow is formed by circulating the above, it is efficient without waste. Furthermore, since this gas-liquid mixed flow is also jetted to the microorganism treatment tank 7, a large amount of oxygen is distributed to the microorganisms in the water 1 to be treated, and the microorganisms are activated to work efficiently.
【００２０】次にこの発明の第二実施例について図３を
基にして説明する。ここで、上述の実施例と同様の部材
は同一符号を付して説明を省略する。この実施例の排水
処理装置は、各種加工工場や、車両等の修理工場の排水
を処理するもので、排水中に、オイルや、金属粉を含ん
でいるものである。この排水処理装置も上記第一実施例
と同様の装置ではあるが、微生物処理槽が設けられず、
処理済の液を収納する処理水槽９が設けられているもの
である。Next, a second embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. The wastewater treatment equipment of this embodiment treats the wastewater of various processing factories and repair factories such as vehicles, and contains oil and metal powder in the wastewater. This wastewater treatment device is also the same device as the first embodiment, but without the microbial treatment tank,
A treated water tank 9 for containing the treated liquid is provided.
【００２１】この実施例の排水処理装置も、微粒子が除
去された処理水８を還流させて気液加圧混合装置１７に
より処理水８に空気を加圧混合し、気液混合流を浮上槽
５中に噴射しているので、浮上槽５中には、減圧されて
析出した気泡が大量に分散され、オイル粒子や金属その
他の微粒子に、小さい気泡が大量に付着し、被処理水１
中のオイルや微粒子を迅速に浮上させるものである。Also in the waste water treatment apparatus of this embodiment, the treated water 8 from which the fine particles have been removed is refluxed, and air is mixed under pressure with the treated water 8 by the gas-liquid pressure mixing device 17 to produce a gas-liquid mixed flow in the floating tank. Since the water is injected into the levitation tank 5, a large amount of air bubbles that have been depressurized and deposited are dispersed in the levitation tank 5, and a large number of small air bubbles are attached to oil particles, metal and other fine particles, and the treated water 1
It quickly raises the oil and particles inside.
【００２２】次にこの発明の第三実施例について図４を
基にして説明する。ここで、上述の実施例と同様の部材
は同一符号を付して説明を省略する。この実施例の排水
処理装置は、ガソリンスタンドや自動車修理工場の排水
を処理するもので、排水中に、オイルや砂埃を含んでい
るものである。この排水処理装置も上記第二実施例と同
様の装置であって、微生物処理槽が設けられず、処理水
８を収納する処理水槽９が設けられているものである。
この実施例では、洗車場３７で洗車した排水や、その他
の廃液を管路３６を経て、攪拌槽３に集めている。そし
て、この実施例では、処理水８を、処理水槽９から管路
３５を介して取り出して、洗車等に再利用しているもの
である。Next, a third embodiment of the present invention will be described with reference to FIG. Here, the same members as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. The wastewater treatment equipment of this embodiment treats the wastewater of a gas station or an automobile repair shop, and the wastewater contains oil and dust. This waste water treatment apparatus is also the same as the second embodiment, except that the microorganism treatment tank is not provided and the treated water tank 9 that stores the treated water 8 is provided.
In this embodiment, waste water washed in the car wash 37 and other waste liquid are collected in the stirring tank 3 via the pipe line 36. Further, in this embodiment, the treated water 8 is taken out from the treated water tank 9 through the pipe 35 and reused for car washing or the like.
【００２３】この実施例の排水処理装置によれば、特
に、水の少ない砂漠地帯等において、無駄なく貴重な水
を使用することができ、システム自体も安価に提供する
ことができるものである。According to the waste water treatment apparatus of this embodiment, especially in a desert area where water is scarce, valuable water can be used without waste, and the system itself can be provided at low cost.
【００２４】尚、この発明の排水処理装置は、処理水を
還流させて、気液混合流を形成する他、気液混合流を形
成する際に、水道水や井戸水等外部から浄水を導入して
も良いものである。又、上記各実施例においても、この
排水処理装置の立ち上げ当初に流す気液混合流は、水道
水等の浄水を用いて形成するものであり、処理水を循環
させる場合と浄水を用いる場合とを組み合わせたもので
も良い。特に、浄水が容易に入手可能な場合や、被処理
水を希釈する必要がある場合等には、この上水を用いて
気液混合流を形成するものである。また、この発明の排
水処理装置の混合器は、ベンチュリ管により形成したも
のの他、絞り部をオリフィス状に急激に絞ったものでも
良く、絞り部等の形状は問わないものである。さらに、
ノズル部材の形状やノズル孔の数も上述の所定の条件に
一致させて適宜設定できるものである。The waste water treatment apparatus of the present invention recirculates the treated water to form a gas-liquid mixed flow, and when forming the gas-liquid mixed flow, clean water is introduced from the outside such as tap water or well water. It is also good. Also, in each of the above-mentioned embodiments, the gas-liquid mixed flow that is flown at the initial stage of starting up this wastewater treatment equipment is formed by using purified water such as tap water, and when the treated water is circulated and when the purified water is used. It may be a combination of and. In particular, when purified water is easily available or when it is necessary to dilute the water to be treated, this clean water is used to form a gas-liquid mixed flow. Further, the mixer of the wastewater treatment apparatus of the present invention may be formed by a Venturi tube, or may be one in which the throttle portion is sharply throttled into an orifice shape, and the shape of the throttle portion or the like is not limited. further,
The shape of the nozzle member and the number of nozzle holes can also be appropriately set according to the above-mentioned predetermined conditions.
【００２５】[0025]
【発明の効果】この発明の排水処理装置は、工場排水や
家庭排水その他の排水である被処理水中に、効率よく大
量の気泡を混合させることができ、排水中の微粒子を迅
速に浮上させることができるものである。また、処理済
の処理水を利用して、気液混合流を形成することによ
り、使用する水を減らし、効率よく排水処理することが
できる。また、気液加圧混合装置も簡単な構造であり、
処理システムを安価に提供することができるものであ
る。EFFECT OF THE INVENTION The wastewater treatment equipment of the present invention can efficiently mix a large amount of bubbles into the water to be treated, which is wastewater from factories, domestic wastewater, and the like, and quickly raise the fine particles in the wastewater. Is something that can be done. In addition, by using the treated water that has been treated to form a gas-liquid mixed flow, it is possible to reduce the amount of water used and efficiently perform wastewater treatment. Also, the gas-liquid pressure mixing device has a simple structure,
The processing system can be provided at low cost.
【図１】この発明の第一実施例の排水処理装置を示す概
略図である。FIG. 1 is a schematic view showing a wastewater treatment equipment of a first embodiment of the present invention.
【図２】この発明の第一実施例の排水処理装置の気液加
圧混合装置の縦断面図である。FIG. 2 is a vertical cross-sectional view of a gas-liquid pressure mixing device of a wastewater treatment device of a first embodiment of the present invention.
【図３】この発明の第二実施例の排水処理装置の概略図
である。FIG. 3 is a schematic diagram of a wastewater treatment equipment of a second embodiment of the present invention.
【図４】この発明の第三実施例の排水処理装置の概略図
である。FIG. 4 is a schematic view of a wastewater treatment equipment of a third embodiment of the present invention.
１ 被処理水 ３ 攪拌槽 ５ 浮上槽（排水処理槽） ７ 微生物処理槽（排水処理槽） ８ 処理水 ９ 処理水槽 １５，１８ ノズル部材 １７ 気液加圧混合装置 ２０ 混合器 ２２ 加圧混合器 ２３ 加圧混合流路 ２４ 喉部（絞り部） ２６ 気体流入部 ２８ 広がり部 ３０ 気体流入口 1 Water to be treated 3 Stirring tank 5 Floating tank (wastewater treatment tank) 7 Microorganism treatment tank (wastewater treatment tank) 8 Treated water 9 Treated water tank 15,18 Nozzle member 17 Gas-liquid pressure mixing device 20 Mixer 22 Pressure mixer 23 Pressurized Mixing Channel 24 Throat (Throttle) 26 Gas Inlet 28 Spreading 30 Gas Inlet
フロントページの続き (72)発明者 柏 雅一 大阪府大阪市淀川区三国本町１丁目10番40 号 和泉電気株式会社内Front page continuation (72) Inventor Masakazu Kashiwa 1-10-40 Mikunihonmachi, Yodogawa-ku, Osaka City, Osaka Prefecture Izumi Electric Co., Ltd.
Claims (5)
と、所定の液体を流す流路の一部を絞った絞り部と、こ
の絞り部の下流側で徐々に上記流路を広げた広がり部
と、上記絞り部のわずかに下流側で上記流路に空気を流
入させる気体流入口と、上記広がり部の下流側に設けら
れ上記液体に空気が混合した気液混合流が流れる加圧混
合流路と、この加圧混合流路の下流側に設けられ上記排
水処理槽中に開口したノズル部材とを備えた排水処理装
置。1. A wastewater treatment tank for accumulating and treating water to be treated, a throttle portion in which a part of a flow passage for flowing a predetermined liquid is narrowed, and the flow passage is gradually widened on the downstream side of the throttle portion. A widened portion, a gas inlet for allowing air to flow into the flow path slightly downstream of the narrowed portion, and a pressurizing flow of a gas-liquid mixed flow in which air is mixed with the liquid, which is provided on the downstream side of the widened portion. A wastewater treatment device comprising a mixing channel and a nozzle member provided on the downstream side of the pressurized mixing channel and opened in the wastewater treatment tank.
と、所定の液体を流す流路の一部を絞った絞り部と、こ
の絞り部の下流側で徐々に上記流路を広げた広がり部
と、上記絞り部のわずかに下流側で上記流路に空気を流
入させる気体流入口と、上記広がり部の下流側に設けら
れ緩急を繰り返す勾配に形成され上から下へ上記液体及
び空気が流れる加圧混合流路と、この加圧混合流路の出
口または下流に設けられた出口側絞りと、この加圧混合
流路の下流側に設けられ上記排水処理槽中に開口したノ
ズル部材とを備えた排水処理装置。2. A wastewater treatment tank for accumulating and treating water to be treated, a throttle part in which a part of a flow path for flowing a predetermined liquid is narrowed, and the above-mentioned flow path is gradually widened on the downstream side of this throttle part. A widened portion, a gas inlet for allowing air to flow into the flow path slightly downstream of the narrowed portion, and a liquid that is formed on the downstream side of the widened portion and has a gradient that repeats abruptly from top to bottom Flowing through the pressure mixing channel, an outlet-side throttle provided at the outlet or downstream of the pressure mixing channel, and a nozzle member provided downstream of the pressure mixing channel and opened in the wastewater treatment tank. Wastewater treatment equipment equipped with.
記流路方向に断面積の等しい気体流入部を設け、この気
体流入部に外部から空気を流入させる気体流入口を形成
し、上記気体流入口の下流側に上記流路を徐々に広げた
広がり部を設け、上記広がり部の下流に上記流路中の液
体と上記気体流入口から流入した空気とを混合する加圧
混合流路を設けた請求項１又は２記載の排水処理装置。3. A gas inflow part, which is provided downstream of the throttle part and has an equal cross-sectional area in the flow path direction, is provided with a gas inflow port for allowing air to flow in from the outside. A pressurizing and mixing flow passage is provided downstream of the gas inlet, where a widened portion is formed by gradually widening the flow passage, and the liquid in the flow passage is mixed with the air flowing in from the gas inlet downstream of the widened portion. The wastewater treatment device according to claim 1 or 2, wherein the wastewater treatment device is provided.
排水処理槽中の被処理水が処理された処理水が還流して
いるものである請求項１，２又は３記載の排水処理装
置。4. The wastewater treatment equipment according to claim 1, wherein the liquid passing through the throttle is refluxed from the treated water obtained by treating the water to be treated in the wastewater treatment tank. .
された被処理水をさらに処理する微生物処理槽を有し、
この微生物処理槽の下部にも上記加圧混合流路の出口側
に接続されたノズル部材が配置されているものである請
求項３又は４記載の排水処理装置。5. A microbial treatment tank for further treating the water to be treated which has been subjected to a predetermined treatment in the wastewater treatment tank,
The wastewater treatment equipment according to claim 3 or 4, wherein a nozzle member connected to the outlet side of the pressurized mixing flow path is also disposed in the lower part of the microorganism treatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6114501A JP2796246B2 (en) | 1994-04-29 | 1994-04-29 | Wastewater treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6114501A JP2796246B2 (en) | 1994-04-29 | 1994-04-29 | Wastewater treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07290042A true JPH07290042A (en) | 1995-11-07 |
| JP2796246B2 JP2796246B2 (en) | 1998-09-10 |
Family
ID=14639337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6114501A Expired - Lifetime JP2796246B2 (en) | 1994-04-29 | 1994-04-29 | Wastewater treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2796246B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009183834A (en) * | 2008-02-05 | 2009-08-20 | Tsukishima Foods Industry Co Ltd | Waste water treatment apparatus |
| CN107050932A (en) * | 2017-06-06 | 2017-08-18 | 利穗科技(苏州)有限公司 | Double buffering type bubble trap |
| JP2018068153A (en) * | 2016-10-26 | 2018-05-10 | 三菱電機株式会社 | Food treatment device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531150A (en) * | 2012-02-20 | 2012-07-04 | 无锡工源机械有限公司 | Biological air floating treatment device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03174292A (en) * | 1989-12-01 | 1991-07-29 | Chiyoda Corp | Floatation equipment |
| JPH04187282A (en) * | 1990-11-20 | 1992-07-03 | Matsushita Electric Ind Co Ltd | Garbage treating device |
| JPH0699167A (en) * | 1992-09-17 | 1994-04-12 | Idec Izumi Corp | Flotation separation method for floating particles in liquid and device therefor |
-
1994
- 1994-04-29 JP JP6114501A patent/JP2796246B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03174292A (en) * | 1989-12-01 | 1991-07-29 | Chiyoda Corp | Floatation equipment |
| JPH04187282A (en) * | 1990-11-20 | 1992-07-03 | Matsushita Electric Ind Co Ltd | Garbage treating device |
| JPH0699167A (en) * | 1992-09-17 | 1994-04-12 | Idec Izumi Corp | Flotation separation method for floating particles in liquid and device therefor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009183834A (en) * | 2008-02-05 | 2009-08-20 | Tsukishima Foods Industry Co Ltd | Waste water treatment apparatus |
| JP2018068153A (en) * | 2016-10-26 | 2018-05-10 | 三菱電機株式会社 | Food treatment device |
| CN107050932A (en) * | 2017-06-06 | 2017-08-18 | 利穗科技(苏州)有限公司 | Double buffering type bubble trap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2796246B2 (en) | 1998-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9399200B2 (en) | Foaming of liquids | |
| US20090121038A1 (en) | Spray nozzle, spray device and method for operating a spray nozzle and a spray device | |
| CN106145315A (en) | A kind of efficient oxygenating system of the confined space | |
| GB2266885A (en) | Bubbling system | |
| JP2670492B2 (en) | Gas-liquid dissolving and mixing equipment | |
| JP2002052330A (en) | Gas and liquid supply device | |
| JPH07290042A (en) | Waste water treating device | |
| JPH0747264A (en) | Method for foaming and apparatus therefor | |
| JPH1066962A (en) | Sewage treating device | |
| WO2017012480A1 (en) | Bubble generation apparatus and bathtub and toilet using the apparatus | |
| JP3306440B2 (en) | Gas-liquid mixed bubble generator | |
| JP6600065B1 (en) | Static mixer | |
| JP2002045667A (en) | Device for generating circulating flow | |
| JP2000184978A (en) | Fine bubble generator and bathtub system | |
| JPS63209791A (en) | Aerator | |
| JP2574736B2 (en) | Gas-liquid pressurized mixing equipment and waste liquid treatment equipment using the same | |
| JP3582036B2 (en) | Gas-liquid contact device | |
| JP2000061489A (en) | Aeration device | |
| PL183241B1 (en) | Apparatus for mixing air with water in a water purifier | |
| JPH0231200Y2 (en) | ||
| RU2287490C1 (en) | System of desalination of water | |
| DE19942802C2 (en) | Mixing ventilation column | |
| JP2000185277A (en) | Fine air bubble generator and bathtub system | |
| JPH0688018B2 (en) | Flotation device | |
| JPH08229543A (en) | Waste water treating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080626 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090626 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090626 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100626 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110626 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110626 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120626 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120626 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130626 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140626 Year of fee payment: 16 |
|
| EXPY | Cancellation because of completion of term |