Nothing Special   »   [go: up one dir, main page]

JP5367335B2 - Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method - Google Patents

Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method Download PDF

Info

Publication number
JP5367335B2
JP5367335B2 JP2008255986A JP2008255986A JP5367335B2 JP 5367335 B2 JP5367335 B2 JP 5367335B2 JP 2008255986 A JP2008255986 A JP 2008255986A JP 2008255986 A JP2008255986 A JP 2008255986A JP 5367335 B2 JP5367335 B2 JP 5367335B2
Authority
JP
Japan
Prior art keywords
sludge
injection
injection pipe
pipe
fluid
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 - Fee Related
Application number
JP2008255986A
Other languages
Japanese (ja)
Other versions
JP2010082574A (en
Inventor
清 鬼海
淳 中村
卓 伊藤
進 佐々木
栄明 大野
Original Assignee
株式会社日本水処理技研
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日本水処理技研 filed Critical 株式会社日本水処理技研
Priority to JP2008255986A priority Critical patent/JP5367335B2/en
Publication of JP2010082574A publication Critical patent/JP2010082574A/en
Application granted granted Critical
Publication of JP5367335B2 publication Critical patent/JP5367335B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate reducing sludge in wastewater, relating to a sludge reducing device, and a sludge treatment apparatus and sludge reducing method, using the sludge reducing device. <P>SOLUTION: The sludge reducing device 1 includes: an injection nozzle 11 for injecting a sludge fluid pressurized by a pressure pump 2; an injection pipe 12 provided downstream of the injection nozzle 11 and having a diameter larger than that of the injection nozzle 11; and a front pipe 14 provided downstream of the injection pipe 12, having a diameter larger than that of the injection pipe 12, and equipped with a cell membrane destroying wall 18 the sludge fluid flowing through the injection pipe 12 collides with. An air inlet 13 is formed between the injection nozzle 11 and the injection pipe 12 capable of introducing air into the injection pipe 12. Inside the injection pipe 12, a tubular power tube 16 having an outside diameter smaller than the inside diameter of the injection pipe 12 is provided almost concentrically with the injection pipe 12, and extending in the longitudinal direction of the injection pipe 12 toward the front pipe 14. The cell membrane destroying wall 18 in the front pipe 14 has a plurality of projections 19 projecting therefrom. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、汚泥減容化装置及びこれを用いた汚泥処理設備並びに汚泥減容化方法に関し、特に、汚泥を減容化するために汚泥の中に含まれる微生物の細胞膜を可溶化し易く構成した汚泥減容化装置及びこれを用いた汚泥処理設備並びに汚泥減容化方法に関する。   The present invention relates to a sludge volume reducing device, a sludge treatment facility using the sludge volume reducing device, and a sludge volume reducing method, and more particularly, to easily solubilize cell membranes of microorganisms contained in sludge in order to reduce sludge volume. The present invention relates to a sludge volume reduction device, a sludge treatment facility using the same, and a sludge volume reduction method.

従来、下水等の汚水を処理する方法として、微生物を用いた生物学的な処理方法が知られている。このような処理方法では、微生物を用いて汚水中の有機物を分解処理する。しかしながら、微生物による分解処理の過程で大量の余剰汚泥が発生する。このような余剰汚泥は産業廃棄物であり、大量に発生する余剰汚泥を可能な限り減容化する処理が必要となる。   Conventionally, biological treatment methods using microorganisms are known as methods for treating sewage such as sewage. In such a treatment method, organic substances in wastewater are decomposed using microorganisms. However, a large amount of excess sludge is generated in the process of decomposition by microorganisms. Such surplus sludge is industrial waste, and it is necessary to reduce the volume of surplus sludge generated as much as possible.

余剰汚泥を減容化するには、余剰汚泥を構成する微生物細胞の細胞膜を破壊(可溶化)することが必要である。余剰汚泥を減容化するための処理方法として、機械的処理法、キャビテーション処理法といった、様々な処理方式がある。これらの処理方法のうち、例えばキャビテーション処理法においては、ポンプによって加圧した汚泥流体を減容化処理装置に噴射導入し、減容化処理装置において急激に流体を減圧することによってキャビテーションを発生させ、気泡の崩壊時に加えられる衝撃力により汚泥を可溶化するよう構成されている。さらに、減容化処理装置内に衝突板を設けて、減容化処理装置に噴射導入された汚泥を衝突板に衝突させることにより、キャビテーションによる衝撃力と衝突板に衝突する衝撃力との複合的な作用によって汚泥の減容化を行っている(例えば、特許文献1)。
特開2007−152268号公報
In order to reduce the volume of excess sludge, it is necessary to destroy (solubilize) the cell membrane of microbial cells that constitute the excess sludge. There are various treatment methods such as a mechanical treatment method and a cavitation treatment method as a treatment method for reducing the volume of excess sludge. Among these treatment methods, for example, in the cavitation treatment method, sludge fluid pressurized by a pump is injected and introduced into the volume reduction treatment device, and the fluid is suddenly decompressed in the volume reduction treatment device to generate cavitation. The sludge is solubilized by the impact force applied when the bubbles collapse. Furthermore, a collision plate is provided in the volume reduction processing device, and sludge injected into the volume reduction processing device is made to collide with the collision plate, thereby combining the impact force caused by cavitation and the impact force colliding with the collision plate. The volume of sludge is reduced by a typical action (for example, Patent Document 1).
JP 2007-152268 A

しかしながら、上記公報にあるようなキャビテーション処理法では、噴射導入された汚泥流体が、衝突板に向かう過程でキャビテーションにより大幅に減速されるため衝突板に衝突する衝撃力が弱くなり、汚泥を十分に減容化することができない。また、キャビテーションを利用した場合、気泡の崩壊時の衝撃力により減容化処理装置に微小な破壊が起き易く処理装置の寿命が短いことが問題となっている。   However, in the cavitation treatment method as described in the above publication, the injected sludge fluid is greatly decelerated by cavitation in the process toward the collision plate, so the impact force that collides with the collision plate is weakened, and the sludge is sufficiently removed. The volume cannot be reduced. Further, when cavitation is used, there is a problem in that the volume reduction treatment device is liable to be broken easily due to the impact force when the bubbles collapse, and the life of the treatment device is short.

以上のような課題に鑑みて、本発明は、汚泥に十分な衝撃力を加えて減容化することができるように構成された汚泥減容化装置及びこれを用いた汚泥処理設備並びに汚泥減容化方法を提供することを目的とする。   In view of the above problems, the present invention provides a sludge volume reducing device configured to be able to reduce the volume by applying a sufficient impact force to sludge, a sludge treatment facility using the sludge reduction equipment, and sludge reduction. The purpose is to provide a method of inclusion.

前記課題を解決するために本発明に係る汚泥減容化装置は、加圧手段(例えば、実施形態における圧力ポンプ2)で加圧された汚泥流体を噴射する噴射ノズルと、噴射ノズルの下流側に設けられ噴射ノズルよりも大きな直径の噴射管と、噴射管の下流側に設けられ噴射管を流れる汚泥流体が衝突する衝突面(例えば、実施形態における細胞膜破壊壁18)と、噴射ノズルと噴射管との間の噴射管内に空気を導入可能な空気導入口とを具える。   In order to solve the above problems, a sludge volume reducing device according to the present invention includes an injection nozzle that injects sludge fluid pressurized by a pressurizing means (for example, the pressure pump 2 in the embodiment), and a downstream side of the injection nozzle. An injection pipe having a diameter larger than that of the injection nozzle, a collision surface provided on the downstream side of the injection pipe and in contact with sludge fluid flowing through the injection pipe (for example, the cell membrane destruction wall 18 in the embodiment), the injection nozzle and the injection An air introduction port through which air can be introduced into the injection pipe between the pipes.

また、上記構成の汚泥減容化装置において、噴射管内部には、噴射管の内径よりも外径が小さい管状のパワーチューブが噴射管と略同心に設けられており、当該パワーチューブが噴射管の長手方向に衝突面に向けて延びているのが好ましい。   Further, in the sludge volume reducing device having the above configuration, a tubular power tube having an outer diameter smaller than the inner diameter of the injection tube is provided in the injection tube substantially concentrically with the injection tube, and the power tube is connected to the injection tube. It is preferable to extend toward the collision surface in the longitudinal direction.

また、上記構成の汚泥減容化装置において、衝突面に、当該衝突面から突出する複数の突起部(例えば、円筒形又は三角錐)が設けられているのが好ましい。   In the sludge volume reducing apparatus having the above-described configuration, it is preferable that a plurality of protrusions (for example, a cylindrical shape or a triangular pyramid) protruding from the collision surface are provided on the collision surface.

また、上記構成の汚泥減容化装置において、噴射ノズルから噴射される汚泥流体の噴射圧力が、0.7〜0.9MPaの圧力であるのが好ましい。   Moreover, in the sludge volume reduction apparatus of the said structure, it is preferable that the injection pressure of the sludge fluid injected from an injection nozzle is a pressure of 0.7-0.9 MPa.

一方、前記課題を解決するために本発明に係る汚泥処理設備は、上記汚泥減容化装置と、噴射ノズルに流体を供給する加圧手段と、汚泥流体を収容する汚泥槽とを具える。   On the other hand, in order to solve the above problems, a sludge treatment facility according to the present invention comprises the sludge volume reducing device, a pressurizing means for supplying a fluid to the spray nozzle, and a sludge tank for accommodating the sludge fluid.

また、上記構成の汚泥処理設備において、汚泥流体を減容化し易くするための汚泥可溶化液を貯留する汚泥可溶化液貯留槽を具えているのが好ましい。   Moreover, it is preferable to provide the sludge solubilization liquid storage tank which stores the sludge solubilization liquid for making the volume reduction of sludge fluid easy in the sludge processing equipment of the said structure.

一方、前記課題を解決するために本発明に係る汚泥減容化方法は、加圧手段で加圧された汚泥流体を噴射する噴射ノズルと、噴射ノズルの下流側に設けられ噴射ノズルよりも大きな直径の噴射管と、噴射管の下流側に設けられ噴射管を流れる汚泥流体が衝突する衝突面と、を具える汚泥減容化装置を用いて、加圧手段で加圧された汚泥流体を噴射ノズルから噴射し、衝突面に汚泥流体を衝突させることにより汚泥を減容化させる。   On the other hand, a sludge volume reduction method according to the present invention for solving the above-described problems is an injection nozzle that injects the sludge fluid pressurized by the pressurizing means, and is larger than the injection nozzle provided downstream of the injection nozzle. The sludge fluid pressurized by the pressurizing means is provided using a sludge volume reducing device having a diameter injection pipe and a collision surface that is provided downstream of the injection pipe and that collides with sludge fluid flowing through the injection pipe. The volume of sludge is reduced by spraying from the spray nozzle and causing the sludge fluid to collide with the collision surface.

本発明の汚泥減容化装置及びこれを用いた汚泥処理設備並びに汚泥減容化方法によれば、汚泥減容化装置を構成する噴射ノズルから噴射された圧力流が噴射管内いっぱいに広がったときに高速移動するピストン状態となり、当該圧力流上流側の噴射管内に負圧が生じる。そして、この負圧により汚泥減容化装置に形成された空気導入口から噴射管内に空気が自然吸引され、汚泥流体を噴射管の下流側に向けて圧送する。これにより、噴射ノズルの上流側と下流側との圧力差が緩和されるため、キャビテーションが発生せず汚泥高速流体が減速することがなく、細胞膜破壊壁に衝突する衝撃力をキャビテーションが発生する場合よりも遙かに高くすることができる。また、キャビテーションが発生しないことから装置が破壊されず、汚泥減容化装置の使用寿命を従来よりも伸ばすことができる。   According to the sludge volume reducing device of the present invention, the sludge treatment facility using the sludge volume reducing method, and the sludge volume reducing method, when the pressure flow injected from the injection nozzle constituting the sludge volume reducing device spreads all over the injection pipe. As a result, the piston is moved at a high speed, and a negative pressure is generated in the injection pipe on the upstream side of the pressure flow. And by this negative pressure, air is naturally sucked into the injection pipe from the air inlet formed in the sludge volume reducing device, and the sludge fluid is pumped toward the downstream side of the injection pipe. As a result, the pressure difference between the upstream side and the downstream side of the injection nozzle is alleviated, so that cavitation does not occur, sludge high-speed fluid does not slow down, and cavitation generates impact force that collides with the cell membrane destruction wall Can be much higher. In addition, since the cavitation does not occur, the device is not destroyed, and the service life of the sludge volume reducing device can be extended as compared with the prior art.

また、汚泥減容化装置の噴射管内部にパワーチューブが設けられている。これにより、噴射ノズルから噴射された高圧の汚泥流体が、噴射管内を拡散せずにパワーチューブに沿って案内されて棒状の高速流体となり、高速を保持したまま下流側に流れて前方に位置する衝突面に高い衝撃力で衝突する。これにより、汚泥の中に含まれる微生物の細胞膜を高い衝撃力で破壊させて汚泥を減容させることが可能である。   Moreover, the power tube is provided in the injection pipe of the sludge volume reducing device. As a result, the high-pressure sludge fluid ejected from the ejection nozzle is guided along the power tube without diffusing in the ejection tube to become a rod-like high-speed fluid, and flows downstream while maintaining the high speed, and is positioned forward. Collides with the impact surface with high impact force. As a result, it is possible to reduce the volume of sludge by destroying the cell membrane of microorganisms contained in the sludge with a high impact force.

なお、パワーチューブによって高速を保持したまま汚泥流体が衝突する衝突面に、当該衝突面から突出する複数の突起部(円筒状又は三角錐等)を設ければ、これらの突起部に汚泥中の微生物の細胞膜が衝突することで、細胞膜がさらに破壊され易くなり、効率よく細胞膜を破壊することができる。   If a plurality of protrusions (cylindrical or triangular pyramid) protruding from the collision surface are provided on the collision surface where the sludge fluid collides while maintaining a high speed by the power tube, these protrusions are in the sludge. When the cell membrane of the microorganism collides, the cell membrane is further easily destroyed, and the cell membrane can be efficiently destroyed.

さらに、苛性ソーダや安定化次亜塩素酸水といった微生物の細胞膜を軟らかくするための汚泥可溶化液と処理対象の汚泥とを予め混合した状態で汚泥減容化装置に送るようにすれば、汚泥減容化装置での汚泥流体の減容化処理をより行い易くすることが可能である。   Furthermore, if sludge solubilizing liquid for softening the cell membrane of microorganisms such as caustic soda and stabilized hypochlorous acid water and sludge to be treated are mixed in advance and sent to the sludge volume reducing device, sludge can be reduced. It is possible to make it easier to reduce the volume of sludge fluid in the container.

ここで、本発明に係る汚泥減容化装置及びこれを用いた汚泥処理設備並びに汚泥減容化方法の実施形態について説明する。図1は、本発明に係る汚泥処理設備の全体構成を示す概略図である。図1に示すように、汚泥処理設備100は、汚泥を減用化するための汚泥減容化装置1と、汚泥槽3に設置され当該汚泥減容化装置1に汚泥を含む排水を加圧供給する圧力ポンプ2と、汚泥を含む排水を貯留するための汚泥槽3と、汚泥の中に含まれる微生物を処理する汚泥可溶化液を貯留するための汚泥可溶化液貯留槽4と、を具えている。   Here, an embodiment of a sludge volume reducing device according to the present invention, a sludge treatment facility using the same, and a sludge volume reducing method will be described. FIG. 1 is a schematic diagram showing the overall configuration of the sludge treatment facility according to the present invention. As shown in FIG. 1, a sludge treatment facility 100 is installed in a sludge volume reducing device 1 for reducing sludge, and pressurizes waste water containing sludge in the sludge tank 3. A pressure pump 2 to be supplied; a sludge tank 3 for storing wastewater containing sludge; and a sludge solubilizing liquid storage tank 4 for storing sludge solubilizing liquid for treating microorganisms contained in the sludge. It has.

圧力ポンプ2は公知の圧力ポンプを用いることができ、処理対象となる汚泥槽3内の汚泥を吸引して汚泥減容化装置1側に圧送する。また、汚泥可溶化液貯留槽4から汚泥槽3に汚泥可溶化液を送ることができるよう構成されており、汚泥槽3において汚泥と汚泥可溶化液とが混合した上で汚泥減容化装置1側に圧送される。また図示しないが、圧力ポンプ2の吸引口には必要十分なフィルタが設けられており、汚泥槽3内の汚れ成分が前段で濾過されるようになっている。汚泥減容化装置1に送られた汚泥は、汚泥減容化装置1内で減容され、再び汚泥槽3に戻り汚泥槽3内に貯留する。   A known pressure pump can be used as the pressure pump 2, and the sludge in the sludge tank 3 to be treated is sucked and pumped to the sludge volume reducing device 1 side. Further, the sludge solubilizing liquid can be sent from the sludge solubilizing liquid storage tank 4 to the sludge tank 3, and the sludge volume reducing device after the sludge and the sludge solubilizing liquid are mixed in the sludge tank 3. Pumped to one side. Although not shown, a necessary and sufficient filter is provided at the suction port of the pressure pump 2 so that the dirt component in the sludge tank 3 is filtered in the previous stage. The sludge sent to the sludge volume reducing device 1 is reduced in volume in the sludge volume reducing device 1, returns to the sludge tank 3 again, and is stored in the sludge tank 3.

図2は、汚泥減容化装置1の詳細を示す拡大図である。本図に示すように、汚泥減容化装置1は、最も上流側(圧力ポンプ2側)に設けられ図示しない圧力ゲージが設置される圧力ゲージ管15と、圧力ゲージ管15の下流側に接続された噴射ノズル設置管17の中に設けられ圧力ポンプ2で加圧された汚泥流体を噴射する噴射ノズル11と、噴射ノズル設置管17に接続されて当該噴射ノズル11の下流側に設けられ噴射ノズル11よりも大きな直径の噴射管12と、噴射管12の下流側に噴射管12の長手方向に対して略垂直方向に延びるよう接続された前方管14とを具えている。なお、噴射管12の内径は、その上流側から下流側にわたって殆ど同じ内径である。   FIG. 2 is an enlarged view showing details of the sludge volume reducing device 1. As shown in the figure, the sludge volume reducing device 1 is connected to a pressure gauge pipe 15 provided on the most upstream side (pressure pump 2 side) where a pressure gauge (not shown) is installed, and a downstream side of the pressure gauge pipe 15. An injection nozzle 11 provided in the injection nozzle installation pipe 17 for injecting sludge fluid pressurized by the pressure pump 2 and connected to the injection nozzle installation pipe 17 and provided on the downstream side of the injection nozzle 11 An injection pipe 12 having a diameter larger than that of the nozzle 11 and a front pipe 14 connected to the downstream side of the injection pipe 12 so as to extend in a direction substantially perpendicular to the longitudinal direction of the injection pipe 12 are provided. The inner diameter of the injection pipe 12 is almost the same from the upstream side to the downstream side.

噴射ノズル11は先端側(下流側)が細くなっており、圧力ポンプ2からの汚泥流体が噴射ノズル11を通過する際にさらに加圧され、毎秒約30〜約45m(例えば、圧力流5kg/cmでの速度が毎秒31.30m、圧力流7kg/cmでの速度が毎秒37.04m、圧力流9kg/cmでの速度が毎秒42.00m、圧力流10kg/cmでの速度が毎秒44.27m)の速度で噴射管12に向けて噴射される構成となっている。噴射管12に噴射される噴射速度として、上記の範囲が好適であるが、その理由は、これらの速度よりも噴射速度を低くすると汚泥流体が前方管14に衝突する速度が遅いため減容化しにくくなり、逆にこれらの速度よりも噴射速度が高い場合には減容化装置1にかかる衝撃力に耐え得るよう装置を大型化する必要があり又は衝撃力により装置が壊れやすくなるためである。又、10kg/cm以上の圧力の汚泥流体が噴射される公知の圧力ポンプは汎用ポンプではなく、汎用的な使用が難しい高価な特殊圧力ポンプであるため、本装置に使用する圧力ポンプとしては適さない。 The injection nozzle 11 is thin on the tip side (downstream side), and is further pressurized when the sludge fluid from the pressure pump 2 passes through the injection nozzle 11, and is about 30 to about 45 m per second (for example, a pressure flow of 5 kg / The velocity at cm 2 is 31.30 m / sec, the velocity at a pressure flow of 7 kg / cm 2 is 37.04 m / sec, the velocity at a pressure flow of 9 kg / cm 2 is 42.00 m / sec, the velocity at a pressure flow of 10 kg / cm 2 Is jetted toward the jet pipe 12 at a speed of 44.27 m / sec. The above-mentioned range is preferable as the injection speed injected into the injection pipe 12, but the reason is that if the injection speed is made lower than these speeds, the sludge fluid collides with the front pipe 14 and the volume is reduced. On the contrary, when the injection speed is higher than these speeds, it is necessary to enlarge the apparatus to withstand the impact force applied to the volume reduction device 1, or the apparatus is easily broken by the impact force. . In addition, a known pressure pump that injects sludge fluid with a pressure of 10 kg / cm 2 or more is not a general-purpose pump, but an expensive special pressure pump that is difficult to use for general purposes. Not suitable.

噴射管12内部には、噴射管12の内径よりも外径が小さい管状のパワーチューブ16が噴射管12と略同心に設けられている。このパワーチューブ16は、噴射管12の内部を噴射間の下流側からその上流側に向かって長手方向に延びている。このような構成により、噴射ノズル11から噴射管12に噴射された汚泥流体の高圧のジェット流が、パワーチューブ16に沿って案内されることにより拡散せずに棒状の高速流体となり、高速を保持したまま噴射管12の前方に位置する前方管14の内壁に衝突する。この時の衝撃力により、汚泥の中の微生物の細胞膜が破壊して減容化される。   Inside the injection pipe 12, a tubular power tube 16 having an outer diameter smaller than the inner diameter of the injection pipe 12 is provided substantially concentrically with the injection pipe 12. The power tube 16 extends in the longitudinal direction through the inside of the injection tube 12 from the downstream side between injections to the upstream side. With such a configuration, the high-pressure jet flow of the sludge fluid injected from the injection nozzle 11 to the injection pipe 12 is guided along the power tube 16 to become a rod-like high-speed fluid without being diffused, and maintains high speed. While colliding, it collides with the inner wall of the front tube 14 located in front of the injection tube 12. Due to the impact force at this time, the cell membrane of microorganisms in the sludge is destroyed and the volume is reduced.

噴射ノズル11と噴射管12との間の噴射ノズル設置管17には、噴射ノズル11と噴射管12との間に設けられた隙間と汚泥減容化装置1の外部とを連通させる空気導入口13が形成されている。この空気導入口13は汚泥減容化装置1の外側表面に環状に複数配設されており、ここから噴射管12の中へと外気が取り込まれるよう構成されている。   The injection nozzle installation pipe 17 between the injection nozzle 11 and the injection pipe 12 communicates with a gap provided between the injection nozzle 11 and the injection pipe 12 and the outside of the sludge volume reducing device 1. 13 is formed. A plurality of the air inlets 13 are annularly arranged on the outer surface of the sludge volume reducing device 1, and the outside air is taken into the injection pipe 12 from here.

上記のように、圧力ポンプ2により圧送された汚泥流は噴射ノズル11にてさらに加圧され、噴射ノズル11から勢いよく噴射される。噴射ノズル11からのジェット流が噴射管内で拡がることによって高速移動するピストン状態となり、噴射管12の上流側に真空状態が発生する。このように噴射管12の上流側が負圧になることで、空気導入口13から噴射管12内に空気が自然吸引される。この状態では、噴射ノズルの上流側から下流側にわたる高速流体の圧力分布は一様となり減圧される部分が生じないため、キャビテーションが発生しない。したがって、汚泥高速流体は減速されず、前方管14の内壁に衝突する衝撃力が高く汚泥の中の微生物の細胞膜の破壊を効率的に行うことが可能となる。また、キャビテーションが発生しないことから、汚泥減容化装置1が壊れにくくなりその使用寿命を伸ばすことができる。   As described above, the sludge flow pumped by the pressure pump 2 is further pressurized by the jet nozzle 11 and jetted vigorously from the jet nozzle 11. When the jet flow from the injection nozzle 11 expands in the injection pipe, the piston moves at a high speed, and a vacuum state is generated on the upstream side of the injection pipe 12. Thus, air is naturally sucked into the injection pipe 12 from the air introduction port 13 by the negative pressure on the upstream side of the injection pipe 12. In this state, the pressure distribution of the high-speed fluid from the upstream side to the downstream side of the injection nozzle is uniform and no portion to be depressurized is generated, so that cavitation does not occur. Therefore, the sludge high-speed fluid is not decelerated, and the impact force that collides with the inner wall of the front pipe 14 is high, so that it is possible to efficiently destroy the cell membrane of microorganisms in the sludge. Moreover, since cavitation does not occur, the sludge volume reducing device 1 is less likely to be broken, and its service life can be extended.

前方管14の内壁面上であって噴射管12の長手方向下流側に位置する部分には、細胞膜破壊壁18が設けられている。この細胞膜破壊壁18の表面には、例えば円柱状又は三角錐状の突起部19が多数設けられている(明瞭のため、図2では三角錐状の突起部19を細胞膜破壊壁18に対して誇張して図示している)。これにより、噴射管12内を高速で流れてきた汚泥流体の中の微生物の細胞膜が、細胞膜破壊壁18表面に形成された突起部19に衝突することで破壊され易くなり、効率よく細胞膜を破壊することができる。また、前方管14の内径は噴射管12の内径の2倍以上に設定されており、これにより表面積の大きな細胞膜破壊壁18が前方管14の内部に設置され、細胞膜破壊壁18に衝突する汚泥流体の中の微生物の細胞膜を効率よく破壊することが可能となる。   A cell membrane destruction wall 18 is provided on the inner wall surface of the front tube 14 and on the downstream side in the longitudinal direction of the injection tube 12. The surface of the cell membrane destruction wall 18 is provided with a large number of, for example, columnar or triangular pyramidal projections 19 (for the sake of clarity, the triangular pyramid-like projections 19 are formed on the cell membrane destruction wall 18 in FIG. Exaggerated). As a result, the cell membrane of microorganisms in the sludge fluid that has flowed through the injection pipe 12 at high speed is likely to be destroyed by colliding with the protrusions 19 formed on the surface of the cell membrane destruction wall 18, and efficiently destroys the cell membrane. can do. Further, the inner diameter of the front tube 14 is set to be twice or more the inner diameter of the injection tube 12, whereby the cell membrane destruction wall 18 having a large surface area is installed inside the front tube 14 and sludge that collides with the cell membrane destruction wall 18. It becomes possible to efficiently destroy the cell membrane of microorganisms in the fluid.

なお、汚泥を減容化するためには、噴射管12内に噴射された高速の汚泥流体を何らかの手段に衝突させればよいため、汚泥減容化装置1は上記のような構成に限られない。上述の実施形態は前方管14の細胞膜破壊壁18に汚泥を衝突させる構成であるが、例えば、前方管14を噴射管12に接続せずに噴射管12の下流側出口付近に衝突板を設け、この衝突板に高速の汚泥流体を衝突させる構成であってもよい。また、汚泥の中の微生物の細胞膜を十分に破壊させることが可能であれば、必ずしも細胞膜破壊壁18面上に突起部19を形成する必要はない。   In order to reduce the volume of sludge, the high-speed sludge fluid injected into the injection pipe 12 has only to collide with some means. Therefore, the sludge volume reducing device 1 is limited to the above configuration. Absent. In the above-described embodiment, sludge is collided with the cell membrane destruction wall 18 of the front pipe 14. For example, a collision plate is provided near the downstream outlet of the injection pipe 12 without connecting the front pipe 14 to the injection pipe 12. A configuration in which a high-speed sludge fluid is allowed to collide with the collision plate may be employed. In addition, if it is possible to sufficiently destroy the cell membrane of microorganisms in the sludge, it is not always necessary to form the protrusion 19 on the cell membrane destruction wall 18 surface.

さらに、上述のように、汚泥流体には微生物の細胞膜を軟らかくするための汚泥可溶化液が混合しており、細胞膜破壊壁18に衝突する汚泥流体の中の微生物の細胞膜が破壊し易くなっている。汚泥可溶化液として、苛性ソーダを含むpH11〜12のアルカリ性溶液、又は除菌効果を有する安定化次亜塩素酸水が好適であるが、これらに限定されず他のものであってもよい。   Furthermore, as described above, the sludge fluid is mixed with a sludge solubilizing solution for softening the cell membrane of microorganisms, and the cell membrane of microorganisms in the sludge fluid that collides with the cell membrane destruction wall 18 is easily destroyed. Yes. As the sludge solubilizing solution, an alkaline solution having a pH of 11 to 12 containing caustic soda or a stabilized hypochlorous acid aqueous solution having a sterilizing effect is preferable, but other solutions may be used.

図1は、本発明の汚泥処理設備の全体構成を示す概略図である。FIG. 1 is a schematic diagram showing the overall configuration of the sludge treatment facility of the present invention. 図2は、図1に示す汚泥減容化装置の詳細を示す概略図である。FIG. 2 is a schematic view showing details of the sludge volume reducing apparatus shown in FIG.

符号の説明Explanation of symbols

1 汚泥減容化装置
2 圧力ポンプ(加圧手段)
3 汚泥槽
4 汚泥可溶化液貯留槽
11 噴射ノズル
12 噴射管
13 空気導入口
14 前方管
16 パワーチューブ
17 噴射ノズル設置管
18 細胞膜破壊壁(衝突面)
19 突起部
100 汚泥処理設備
1 Sludge volume reduction device 2 Pressure pump (pressurizing means)
DESCRIPTION OF SYMBOLS 3 Sludge tank 4 Sludge solubilization liquid storage tank 11 Injection nozzle 12 Injection pipe 13 Air inlet 14 Front pipe 16 Power tube 17 Injection nozzle installation pipe 18 Cell membrane destruction wall (collision surface)
19 Protrusion 100 Sludge treatment equipment

Claims (7)

汚泥減容化装置であって、
加圧手段で加圧された汚泥流体を噴射する噴射ノズルと、前記噴射ノズルの下流側に設けられ前記噴射ノズルよりも大きな直径の噴射管と、前記噴射管の下流側に設けられ前記噴射管を流れる汚泥流体が衝突する衝突面と、前記噴射ノズルと前記噴射管との間の前記噴射管内に空気を導入可能な空気導入口とを具えており、
前記噴射ノズルから噴射される汚泥流体の速度が、30m/s乃至45m/sであることを特徴とする装置。
A sludge volume reduction device,
An injection nozzle that injects sludge fluid pressurized by the pressurizing means; an injection pipe that is provided on the downstream side of the injection nozzle and has a larger diameter than the injection nozzle; and the injection pipe that is provided on the downstream side of the injection pipe A collision surface on which sludge fluid flowing through the air collides, and an air introduction port capable of introducing air into the injection pipe between the injection nozzle and the injection pipe ,
Velocity of the sludge fluid injected from the injection nozzle, 30 m / s to 45 m / s der Rukoto apparatus according to claim.
前記噴射管内部には、前記噴射管の内径よりも外径が小さく、且つ内径が前記噴射ノズルよりも大きい管状のパワーチューブが前記噴射管と略同心に設けられており、当該パワーチューブが前記噴射管の長手方向に前記衝突面に向けて延びていることを特徴とする請求項1に記載の汚泥減容化装置。 Inside the injection pipe, the than the inner diameter of the injection tube outside diameter rather small, and and the inner diameter is larger tubular power tube than the injection nozzle disposed substantially concentrically with the injection tube, the power tube The sludge volume reducing device according to claim 1, wherein the sludge volume reducing device extends in the longitudinal direction of the spray pipe toward the collision surface. 前記衝突面に、当該衝突面から突出する複数の突起部が設けられていることを特徴とする請求項1に記載の汚泥減容化装置。   The sludge volume reducing device according to claim 1, wherein the collision surface is provided with a plurality of protrusions protruding from the collision surface. 前記噴射ノズルから噴射される汚泥流体の噴射圧力が、0.7〜0.9MPaの圧力であることを特徴とする請求項1から3のいずれか1項に記載の汚泥減容化装置。   The sludge volume reducing device according to any one of claims 1 to 3, wherein a spray pressure of the sludge fluid sprayed from the spray nozzle is a pressure of 0.7 to 0.9 MPa. 請求項1から4のいずれか1項に記載の汚泥減容化装置と、前記噴射ノズルに流体を供給する加圧手段と、汚泥流体を収容する汚泥槽とを具えることを特徴とする汚泥処理設備。   A sludge volume reducing device according to any one of claims 1 to 4, a pressurizing means for supplying fluid to the spray nozzle, and a sludge tank for storing sludge fluid. Processing equipment. さらに、汚泥流体を減容化し易くするための汚泥可溶化液を貯留する汚泥可溶化液貯留槽を具えていることを特徴とする請求項5に記載の汚泥処理設備。   The sludge treatment facility according to claim 5, further comprising a sludge solubilizing liquid storage tank for storing a sludge solubilizing liquid for facilitating volume reduction of the sludge fluid. 汚泥減容化方法であって、
加圧手段で加圧された汚泥流体を噴射する噴射ノズルと、前記噴射ノズルの下流側に設けられ前記噴射ノズルよりも大きな直径の噴射管と、前記噴射管の下流側に設けられ前記噴射管を流れる汚泥流体が衝突する衝突面と、前記噴射ノズルと前記噴射管との間の前記噴射管内に空気を導入可能な空気導入口と、を具える汚泥減容化装置を用いて、
前記加圧手段で加圧された汚泥流体を、30m/s乃至45m/sの速度で前記噴射ノズルから噴射し、前記衝突面に汚泥流体を衝突させることにより汚泥を減容化させることを特徴とする方法。
A sludge volume reduction method,
An injection nozzle that injects sludge fluid pressurized by the pressurizing means; an injection pipe that is provided on the downstream side of the injection nozzle and has a larger diameter than the injection nozzle; and the injection pipe that is provided on the downstream side of the injection pipe Using a sludge volume reducing device comprising a collision surface on which sludge fluid flowing through the air collides, and an air introduction port capable of introducing air into the injection pipe between the injection nozzle and the injection pipe ,
The sludge fluid pressurized by the pressurizing means is ejected from the spray nozzle at a speed of 30 m / s to 45 m / s, and sludge fluid is collided with the collision surface to reduce the volume of sludge. And how to.
JP2008255986A 2008-10-01 2008-10-01 Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method Expired - Fee Related JP5367335B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008255986A JP5367335B2 (en) 2008-10-01 2008-10-01 Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008255986A JP5367335B2 (en) 2008-10-01 2008-10-01 Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method

Publications (2)

Publication Number Publication Date
JP2010082574A JP2010082574A (en) 2010-04-15
JP5367335B2 true JP5367335B2 (en) 2013-12-11

Family

ID=42247060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008255986A Expired - Fee Related JP5367335B2 (en) 2008-10-01 2008-10-01 Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method

Country Status (1)

Country Link
JP (1) JP5367335B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6096526B2 (en) * 2013-02-13 2017-03-15 株式会社日本水処理技研 Polishing machine, contaminant removal system using the same, and contaminant removal method
KR102143001B1 (en) * 2013-11-01 2020-08-11 에스케이이노베이션 주식회사 The shredding process of oleaginous microorganism using supersonic disperser and manufacturing method of bio-oil using it

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164500A (en) * 1987-12-18 1989-06-28 Pub Works Res Inst Ministry Of Constr Anaerobic digestion process
JPH0661560B2 (en) * 1988-02-26 1994-08-17 宇部興産株式会社 Treatment method of activated excess sludge
JP3326500B2 (en) * 2000-09-27 2002-09-24 株式会社東京フローメータ研究所 Processing equipment for processing objects containing microorganisms
JP2004202368A (en) * 2002-12-25 2004-07-22 Babcock Hitachi Kk Method and apparatus for treating activated sludge
JP3864169B2 (en) * 2004-08-19 2006-12-27 ダイヤモンドエンジニアリング株式会社 Sludge treatment method and sludge treatment equipment

Also Published As

Publication number Publication date
JP2010082574A (en) 2010-04-15

Similar Documents

Publication Publication Date Title
US20070287917A1 (en) Method for Collapsing Microbubbles
KR101937133B1 (en) Micro and nano bubble generating method, generating nozzle, and generating device
EP2492004B1 (en) Micro-bubble generation device
EP3061520B1 (en) Microbubble generating device and contaminated water purifying system provided with microbubble generating device
KR100799663B1 (en) Apparatus for preparing sterilized water by using ozone
WO2009107386A1 (en) Saturated water generator and apparatus for generating saturated water and saturated liquids
JP5367335B2 (en) Sludge volume reduction device, sludge treatment facility using the same, and sludge volume reduction method
JP6449531B2 (en) Microbubble generator
CN102963947A (en) Pressurized dissolved micro-bubble generator
JP3864169B2 (en) Sludge treatment method and sludge treatment equipment
KR101688638B1 (en) Apparatus for cleaning organic matter using fine ozone bubble
JP4666228B2 (en) Sludge treatment equipment
JP4925193B2 (en) Refined mixing device and refined mixing method for multiphase fluid
CN205398413U (en) Water conservancy cavitation mud decrement device
JP5495299B2 (en) Bubble generation method and apparatus, and processing apparatus using the apparatus
JP2007152268A (en) Sludge reducing device
JP5604003B2 (en) Ballast underwater aquatic organism killing device
JP2011005359A (en) Organic waste liquid treatment apparatus and method
JP2012106189A (en) Device of generating bubble-containing liquid
JP3749156B2 (en) Liquid quality reformer
KR100445301B1 (en) Ozone Sterilization Method and Device for Water Supply Drainage
JP2001009447A (en) Jet.reactor
KR100842786B1 (en) Dissolution oxygen generator by using a floating bubble
JP2000254483A (en) Cavitation reactor
JP2004049938A (en) Sludge treatment apparatus and method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110810

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120316

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20121002

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121126

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130827

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130911

R150 Certificate of patent or registration of utility model

Ref document number: 5367335

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees