JP4849382B2 - Water treatment equipment - Google Patents

Water treatment equipment Download PDF

Info

Publication number
JP4849382B2
JP4849382B2 JP2008036073A JP2008036073A JP4849382B2 JP 4849382 B2 JP4849382 B2 JP 4849382B2 JP 2008036073 A JP2008036073 A JP 2008036073A JP 2008036073 A JP2008036073 A JP 2008036073A JP 4849382 B2 JP4849382 B2 JP 4849382B2
Authority
JP
Japan
Prior art keywords
electrode
water
phase
discharge
side electrode
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
JP2008036073A
Other languages
Japanese (ja)
Other versions
JP2009190003A5 (en
JP2009190003A (en
Inventor
池　　英昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
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 Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP2008036073A priority Critical patent/JP4849382B2/en
Publication of JP2009190003A publication Critical patent/JP2009190003A/en
Publication of JP2009190003A5 publication Critical patent/JP2009190003A5/ja
Application granted granted Critical
Publication of JP4849382B2 publication Critical patent/JP4849382B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Physical Water Treatments (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Description

本発明は、上水、下水、産業排水、ゴミ処理場浸出水、畜産排水、工業用排水、食品加工用排水、半導体等洗浄用排水、プール用水、船舶用バラスト用排水、河川・湖沼等の汚染水等における有機物、微生物、細菌類もしくはアンモニア含有水の処理を行う水処理装置に関する。   The present invention includes water, sewage, industrial wastewater, waste disposal leachate, livestock wastewater, industrial wastewater, wastewater for food processing, wastewater for cleaning semiconductors, pool water, drainage for ballasts for ships, rivers and lakes, etc. The present invention relates to a water treatment apparatus that treats organic matter, microorganisms, bacteria, or ammonia-containing water in contaminated water or the like.

近年、用・廃水中に含まれる有害あるいは不快な要因となる、有機物や細菌類の処理に、放電等により生成されるオゾンやヒドロキシラジカル等の活性種を利用して水を浄化する処理方式が定着しつつある。
オゾンやヒドロキシラジカル等の活性種は、それ自身がもつ強力な酸化力で水中に溶解している溶存性の有機物を酸化分解する作用があり、上下水のみならず産業用廃水、プール用水、船舶用バラスト用廃水等の各種用廃水のＣＯＤ、脱色、脱臭、殺菌、有害な難分解性有機物等の除去手段として導入が広がりつつある。
オゾンを利用した一般的な処理方法としては、空気または高濃度酸素を放電空間に通気して気体オゾンを生成し、これを散気等により水中に溶解して除去対象物質に接触反応させるといったものである。しかし、この方法は電力効率が低いこと、大型の装置、高いコスト等の問題がある。この対策として、水中に設置した電極間で空気や酸素を積極的且つ効率的に曝気することによって微細気泡を発生させ、こうした水中内の気泡空間で放電を発生させるといった方法が提案されている（例えば、特許文献１参照）。しかしながら、放電空間を形成するための微細気泡を生成するために、空気または酸素ガスを供給する設備や、気泡を微細化するための設備が付随されている。同時に水中に未溶解の気泡を脱気する設備や、脱気後の排ガス処理設備が必要であることが容易に予測されるなど、コンパクト化、低コスト化は極めて困難である。また、微細化された気泡中の圧力は、ほぼ大気圧と同等か、それよりも高い圧力となっている。このため、放電空間を形成するときの放電開始電圧が高く、高電圧印加が必要であるため受電設備が大規模になる。なお、オゾンやヒドロキシラジカル等の活性種を主とする化学的な作用のみに期待できる方法であり、被処理水中に浮遊物等が混在する場合には効果が制限されるといったようなことも懸念されている。
このようなことから、通水管路内にキャビテーション気泡を発生させ、この微細な気泡を利用して放電プラズマを形成し、水処理を行う装置が提案されている（例えば、特許文献２参照）。このときの水処理装置は図６のようになっている。
図６は、従来の水処理装置を示す概略構成図である。図において、１は被処理水、２は本体、３は高圧側電極、４は接地側電極、５は放電部、６は高周波を発生する高電圧電源、７は処理水である。
本体２は、ノズル２ａを有しており、通常、絶縁体からなるが、導電体からなる場合は高圧側電極３を絶縁体で浮かせる。
被処理水１はポンプや高低差等を利用して一定の圧力で本体２に加圧送給される。本体２の管路内に設置されたノズル２ａはベンチュリ−構造を有しており、ノズル２ａの後部先端の最縮小部を通過直後、この後段近傍では急激な圧力低下が生じる。そのとき液体の飽和蒸気圧以下になった領域では沸騰現象が生じ、無数の小さなキャビテーション気泡が発生する。ノズル２ａの後段近傍には、高圧側電極３と接地側電極４を対向させた放電部５がある。この放電部５には該キャビテーション気泡が発生しており、高電圧電源６から正弦状波形、パルス波形もしくは矩形等の高電圧を印加することにより、放電部５の通水管路空間には放電プラズマが形成される。この放電空間では、キャビテーション気泡中に含まれる蒸気や酸素が高密度の電気エネルギーによって励起され、ヒドロキシラジカルやオゾン等の活性種が生成される。これらは速やかに被処理水１の中に溶け込み、被処理有機物等と効果的に反応してこれを分解することにより清浄な処理水７が得られる。また、キャビテーション気泡は流速が減じて圧力が増加した箇所で消滅するが、急激に気泡が縮むため、気泡内に衝撃力が生じる。この衝撃力により被処理水中の被処理有機物等を粉砕等の相乗作用を得ることができるといったものである。
特開平５−３１９８０７ ＰＣＴ／ＪＰ２００７／０５４８７ In recent years, there is a treatment system that purifies water using active species such as ozone and hydroxy radicals generated by discharge, etc., for the treatment of organic matter and bacteria, which are harmful or unpleasant factors contained in use and wastewater. It is becoming established.
Active species such as ozone and hydroxyl radicals have the ability to oxidize and decompose dissolved organic substances dissolved in water with their strong oxidizing power, and not only water and sewage but also industrial wastewater, pool water, ships Introduction is spreading as a means for removing COD, decolorization, deodorization, sterilization, harmful hardly decomposable organic substances, etc. for various wastewaters such as wastewater for ballasts.
As a general treatment method using ozone, air or high-concentration oxygen is passed through the discharge space to generate gaseous ozone, which is dissolved in water by aeration, etc., and contacted with the substance to be removed. It is. However, this method has problems such as low power efficiency, large equipment, and high cost. As a countermeasure, a method has been proposed in which fine bubbles are generated by aeration of air and oxygen actively and efficiently between electrodes installed in water, and discharge is generated in the bubble space in the water ( For example, see Patent Document 1). However, in order to generate fine bubbles for forming the discharge space, equipment for supplying air or oxygen gas and equipment for miniaturizing the bubbles are attached. At the same time, it is very difficult to reduce the size and cost, for example, it is easily predicted that a facility for degassing undissolved bubbles in water and an exhaust gas treatment facility after degassing are necessary. Moreover, the pressure in the refined bubble is almost equal to or higher than the atmospheric pressure. For this reason, since the discharge start voltage when forming discharge space is high and a high voltage application is required, a power receiving installation becomes large-scale. In addition, it is a method that can be expected only for chemical action mainly composed of active species such as ozone and hydroxy radicals, and there is concern that the effect is limited when floating substances etc. are mixed in the water to be treated. Has been.
For this reason, an apparatus has been proposed in which cavitation bubbles are generated in a water conduit, discharge plasma is formed using the fine bubbles, and water treatment is performed (see, for example, Patent Document 2). The water treatment apparatus at this time is as shown in FIG.
FIG. 6 is a schematic configuration diagram showing a conventional water treatment apparatus. In the figure, 1 is treated water, 2 is a main body, 3 is a high-voltage side electrode, 4 is a ground-side electrode, 5 is a discharge part, 6 is a high-voltage power source that generates high frequency, and 7 is treated water.
The main body 2 has a nozzle 2a and is usually made of an insulator, but when made of a conductor, the high-voltage side electrode 3 is floated by the insulator.
The treated water 1 is pressurized and fed to the main body 2 at a constant pressure using a pump or a height difference. The nozzle 2a installed in the pipe line of the main body 2 has a venturi structure, and immediately after passing through the most contracted portion at the rear end of the nozzle 2a, a rapid pressure drop occurs in the vicinity of this rear stage. At that time, the boiling phenomenon occurs in the region where the liquid is below the saturated vapor pressure, and countless small cavitation bubbles are generated. In the vicinity of the rear stage of the nozzle 2a, there is a discharge portion 5 in which the high voltage side electrode 3 and the ground side electrode 4 are opposed to each other. The cavitation bubbles are generated in the discharge unit 5, and a discharge plasma is generated in the water passage space of the discharge unit 5 by applying a high voltage such as a sine waveform, a pulse waveform, or a rectangle from the high voltage power source 6. Is formed. In this discharge space, vapor and oxygen contained in the cavitation bubbles are excited by high-density electrical energy, and active species such as hydroxy radicals and ozone are generated. These quickly dissolve in the water 1 to be treated, react effectively with the organic matter to be treated, etc., and decompose them to obtain clean treated water 7. Further, the cavitation bubble disappears at a point where the flow velocity is reduced and the pressure is increased, but since the bubble is rapidly contracted, an impact force is generated in the bubble. This impact force can provide a synergistic action such as pulverization of the organic matter to be treated in the water to be treated.
JP-A-5-319807 PCT / JP2007 / 05487

ところが、従来の水処理装置では被処理水の通水量を増大する場合、通水管の管径を拡大する必要があり、これに伴って放電空間を拡大することや、放電部の距離を広げることが要求される。放電部の距離を広げると放電開始電圧が上昇するので、高圧側電極への印加電圧を増大させる必要がある。
印加電圧の増大を抑制する手段として、送給する被処理水の圧力を高めてノズル後段における管路内の圧力を低下させることにより、キャビテーション気泡の密度を増大することや、放電部の設置場所を最適化する方法等がある。しかしながら、処理効率上これらの運用には限界がある。このように従来技術では、通水量が制限されるため、単位装置の処理規模を拡大することが困難である。
また、放電プラズマの形態がアーク放電となる場合、処理時間の進行につれて金属製放電部の電界が集中する先端部が高熱により溶融して欠損するため、長期安定性が得られないといった問題がある。
本発明はこのような問題点に鑑みてなされたものであり、放電部の電極間隔を広げることなく放電空間を拡大して単位装置における処理規模を大幅に拡大するとともに、放電部の欠損による影響を抑制して長期安定性を確保することのできる水処理装置を提供することを目的とする。 However, in the case of increasing the amount of water to be treated in the conventional water treatment apparatus, it is necessary to enlarge the diameter of the water pipe, and accordingly, the discharge space is enlarged and the distance of the discharge part is increased. Is required. If the distance of the discharge part is increased, the discharge start voltage increases, so it is necessary to increase the voltage applied to the high-voltage side electrode.
As a means to suppress the increase in applied voltage, the pressure of the water to be fed is increased to decrease the pressure in the pipeline in the latter stage of the nozzle, thereby increasing the density of cavitation bubbles, and the location of the discharge unit There is a method of optimizing. However, these operations are limited in terms of processing efficiency. Thus, in the prior art, since the amount of water flow is limited, it is difficult to increase the processing scale of the unit device.
In addition, when the discharge plasma is in the form of arc discharge, there is a problem that long-term stability cannot be obtained because the tip portion where the electric field of the metal discharge portion concentrates melts due to high heat and is lost as the processing time advances. .
The present invention has been made in view of such problems, and it is possible to expand the discharge space without expanding the electrode interval of the discharge part, thereby greatly expanding the processing scale in the unit device, and the influence of the discharge part defect. It aims at providing the water treatment apparatus which can suppress long-term stability and can ensure long-term stability.

上記問題を解決するため、一の観点によれば、本発明は、筒状の本体と、その前段に設けたベンチュリ形状のノズルと、前記ノズル後段の前記塔状の本体内部に設けられた少なくとも１つの高圧側電極と、前記高圧側電極と離隔する位置に対向して配置された少なくとも１つの接地側電極とを有する組電極を備えた放電部により構成され、前記ノズル側から被処理水を一定の圧力で送給して微小キャビテーション気泡を発生させ、前記高圧側電極及び前記接地側電極間に高電圧を印加することにより、前記放電部近傍を通過するキャビテーション気泡空間に放電プラズマを形成させて、前記被処理水中に含有する有機物等の被処理物質の分解や合成等の処理を行う水処理装置であって、前記組電極を少なくとも３組備え、各々の前記組電極の前記高圧側電極に、３相の高電圧電源からそれぞれＲ相、Ｓ相、Ｔ相を接続したものである。
また、前記組電極の前記高圧側電極及び前記接地側電極は、互いに略平行に配置され、前記塔状の本体の内壁から中心方向に向けて設置されてもよい。
また、前記組電極は３の倍数組設けられてもよい。
また、前記被処理水が前記組電極の放電空間近傍を流れるように、前記本体の中央部に略同心円状に整流スペーサを設けてもよい。
また、前記整流スペーサは、前記被処理水が外周方向への回転流れを形成するように回転翼を施した形状としてもよい。
In order to solve the above problem , according to one aspect, the present invention provides a cylindrical main body, a venturi-shaped nozzle provided in the front stage thereof, and at least provided in the tower-shaped main body in the rear stage of the nozzle. It comprises a discharge part having a set electrode having one high-voltage side electrode and at least one ground-side electrode arranged opposite to the position separated from the high-voltage side electrode. A small cavitation bubble is generated by feeding at a constant pressure, and by applying a high voltage between the high-voltage side electrode and the ground-side electrode , discharge plasma is formed in the cavitation bubble space passing near the discharge part. Te, wherein a processing water treatment apparatus for performing the decomposition and synthesis, etc. of the treated material such as an organic substance contained in treatment water, the assembled electrode at least 3 Kumisonae, of each of the sets electrode A serial high-voltage side electrode, each of R-phase from the high voltage power supply 3 phase, S phase, which are connected to T phase.
Further, the high-voltage side electrode and the ground-side electrode of the assembled electrode may be arranged substantially in parallel with each other and installed from the inner wall of the tower-shaped main body toward the center.
Further, the set electrode may be provided in multiples of 3.
Moreover, you may provide a rectification | straightening spacer in a substantially concentric form in the center part of the said main body so that the said to-be-processed water may flow in the discharge space vicinity of the said assembly electrode.
The rectifying spacer may have a shape in which a rotating blade is provided so that the water to be treated forms a rotating flow in the outer peripheral direction.

本発明によれば、高圧側電極と平行に接地側電極を配置することにより、キャビテーション気泡の通過する流れの状態に応じて高圧側電極と接地側電極の対向する側の広い範囲に分散されて放電が形成されることになる。また、高圧側電極と接地側電極を一対のみでなく、複数の接地側電極を配置することにより、高圧側電極の電界が集中して放電が形成される面を多方向に分散させることができる。このように、３次元方向に広く放電場を形成するとともに、本体２の管路内の３箇所に各々の組電極を配置して３相の高電圧を供給することにより、放電形成空間が拡大し、通水量の増加に伴う単位装置当りの処理規模の拡大に寄与することができる。
また、放電場を広く分散することにより、局所への電界の集中を緩和し、金属の高熱溶融による欠損を大幅に軽減することが可能となる。
また、処理水量に応じて３相の放電部をｎ数倍設けることにより、さらなる単位装置当りの処理規模の拡大が可能になる。
また、放電形成空間からの距離が長くなる中心部付近には整流スペーサを設けることにより、単位装置当りの処理規模の拡大に伴う処理効率の低下を防止することができる。
また、整流スペーサに回転翼を施すことにより、被処理水が外周方向に攪拌される。このため、被処理水中に含有する有機物等の被処理物質は放電により生じるラジカルや電界、あるいは紫外線と一様に接触することになり処理効率が向上する。
 According to the present invention, by arranging the ground side electrode in parallel with the high voltage side electrode, the ground side electrode is dispersed over a wide range on the opposite side of the high voltage side electrode and the ground side electrode according to the flow state through which the cavitation bubbles pass. A discharge will be formed. Further, by arranging not only a pair of the high-voltage side electrode and the ground-side electrode but also a plurality of ground-side electrodes, the surface on which the electric field of the high-voltage side electrode is concentrated and discharge is formed can be dispersed in multiple directions. . In this way, a discharge field is broadly formed in a three-dimensional direction, and each discharge electrode is arranged at three locations in the conduit of the main body 2 to supply a three-phase high voltage, thereby expanding a discharge formation space. However, it can contribute to the expansion of the processing scale per unit device with the increase of the water flow rate.
In addition, by widely dispersing the discharge field, it is possible to alleviate the concentration of the electric field to the local area and greatly reduce defects caused by high-temperature metal melting.
In addition, by providing n times multiple three-phase discharge units according to the amount of treated water, it is possible to further expand the treatment scale per unit device.
Further, by providing a rectifying spacer in the vicinity of the central portion where the distance from the discharge forming space becomes long, it is possible to prevent a reduction in processing efficiency accompanying an increase in processing scale per unit device.
In addition, the water to be treated is agitated in the outer circumferential direction by applying the rotating blades to the flow straightening spacer. For this reason, to-be-processed substances, such as an organic substance contained in to-be-processed water, will contact uniformly with the radical, electric field, or ultraviolet-ray which arises by discharge, and processing efficiency improves.

以下、本発明の実施の形態について図を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の実施例１を示す水処理装置の概略構成図、図２は図１電極部分の断面図、図３は図２の電極部分の拡大断面図である。
図において、８は組電極である。それ以外の各部の符号は従来例と同じである。配置や構造が異なる電極及び構成について説明する。
組電極８は、棒状の高圧側電極３と、これと同形状の接地側電極４からなり、高圧側電極３を中心として平行かつ等間隔に２本対称に配置している。この組電極８を、本体２の管路内壁から中心部に向けて突出させこれを円周方向に略等間隔で３組設けるとともに、３相高電圧電源６ｂから前記組電極の高圧側電極にそれぞれＲ相、Ｓ相、Ｔ相の高電圧を供給するように構成している。 1 is a schematic configuration diagram of a water treatment apparatus showing Embodiment 1 of the present invention, FIG. 2 is a sectional view of the electrode portion of FIG. 1, and FIG. 3 is an enlarged sectional view of the electrode portion of FIG.
In the figure, 8 is an assembled electrode. The other symbols are the same as those in the conventional example. An electrode and a configuration having different arrangements and structures will be described.
The assembled electrode 8 is composed of a rod-shaped high-voltage side electrode 3 and a ground-side electrode 4 having the same shape as that, and is arranged symmetrically in parallel and at equal intervals around the high-voltage side electrode 3. The assembled electrode 8 is projected from the inner wall of the pipe line of the main body 2 toward the center portion, and three sets thereof are provided at substantially equal intervals in the circumferential direction, and from the three-phase high voltage power source 6b to the high voltage side electrode of the assembled electrode. Each is configured to supply a high voltage of R phase, S phase, and T phase.

つぎに、本実施例の動作について説明する。
まず、被処理水１を本体２に通水すると、従来例と同様にキャビテーション気泡が発生する。
ついで３箇所の組電極８に３相の高電圧を印加すると、キャビテーション気泡の通過する流れの状態に応じて高圧側電極と接地側電極の対向する側の広い範囲に分散されて放電空間が形成される（図３）。キャビテーション気泡は激しい攪拌により本体２の管路内に広く形成された放電に接触することにより、キャビテーション気泡中に含まれる蒸気や酸素が高密度の電気エネルギーによって励起され、ヒドロキシラジカルやオゾン等の活性種が生成される。これらは速やかに被処理水中に溶け込み、キャビテーション気泡やキャビテーション気泡の消滅に伴う激しい乱流により均一に拡散され、被処理有機物等と効果的に反応してこれを分解することにより清浄な処理水が得られる。また、キャビテーション気泡は流速が減じて圧力が増加した箇所で消滅するが、急激に気泡が縮むため、気泡内に衝撃力が生じる。この衝撃力により被処理水中の被処理有機物等を粉砕等の相乗作用を得ることができる。
このように、組電極８を高圧側電極３と接地側電極４を一対ではなく、二対としたことにより、高圧側電極３の電界が集中して放電が形成される面を二方向に分散させることができ、広く放電場を形成することができる。さらに、本体２の管路内の３箇所に組電極８を配置して３相の高電圧を供給したことにより、放電形成空間が拡大する。これらにより、本体２の管路の断面積の拡大が容易にできるようになり、通水量の増加に伴う単位装置当りの処理規模を拡大することが可能になる。
一方、放電場を広く分散したことにより、局所への電界の集中を緩和し、金属電極の高熱溶融による欠損を大幅に軽減することが可能となる。
なお、ポンプや高低差等を利用して圧送するときの水圧は被処理水１の水質等にもよるが、概ね０．１〜１．５ＭＰａの範囲で設定するのが良い。 Next, the operation of this embodiment will be described.
First, when the treated water 1 is passed through the main body 2, cavitation bubbles are generated as in the conventional example.
Next, when a three-phase high voltage is applied to the three sets of electrodes 8, a discharge space is formed by being dispersed over a wide range on the opposite side of the high-voltage side electrode and the ground-side electrode according to the flow state through which the cavitation bubbles pass. (FIG. 3). The cavitation bubbles come into contact with the discharge formed widely in the pipe line of the main body 2 by vigorous stirring, so that the vapor and oxygen contained in the cavitation bubbles are excited by high-density electric energy, and activities such as hydroxy radicals and ozone A seed is generated. These quickly dissolve in the water to be treated, and are uniformly diffused by vigorous turbulence associated with the disappearance of cavitation bubbles and cavitation bubbles, which effectively reacts with the organic matter to be treated and decomposes it to produce clean treated water. can get. Further, the cavitation bubble disappears at a point where the flow velocity is reduced and the pressure is increased, but since the bubble is rapidly contracted, an impact force is generated in the bubble. By this impact force, a synergistic action such as pulverization of the organic matter to be treated in the water to be treated can be obtained.
As described above, the assembled electrode 8 is not the pair but the pair of the high-voltage side electrode 3 and the ground-side electrode 4, so that the electric field of the high-voltage side electrode 3 is concentrated and the surface where the discharge is formed is distributed in two directions. And a wide discharge field can be formed. Furthermore, by disposing the assembled electrodes 8 at three locations in the conduit of the main body 2 and supplying a three-phase high voltage, the discharge forming space is expanded. As a result, the cross-sectional area of the pipe line of the main body 2 can be easily increased, and the processing scale per unit device can be increased as the water flow rate increases.
On the other hand, since the discharge field is widely dispersed, it is possible to alleviate the concentration of the electric field to the local area and to greatly reduce defects due to the high heat melting of the metal electrode.
In addition, although it depends on the water quality of the to-be-processed water 1 etc., it is good to set the water pressure at the time of pumping using a pump, a height difference, etc. in the range of about 0.1-1.5 MPa.

図４は本発明の実施例２を示す水処理装置の概略構成図、図５は図４の電極部分の断面図である。図において、９は整流スペーサ、１０は回転翼である。
その他の符号は実施例１と同じである。本実施例では、組電極８を６箇所に配置するとともに、本体２の管路の中心部に管壁から一定の間隔を保って整流スペーサ９を配置したものである。本構成により、さらなる単位装置当りの処理規模の拡大が可能になるとともに、処理規模の拡大に伴う処理効率の低下を防止することができる。さらに、整流スペーサに施した回転翼１０により、被処理水１が外周方向に攪拌される。これにより、被処理水中に含有する有機物等の被処理物質は放電により生じるラジカルや電界、あるいは紫外線と一様に接触することになり処理効率が向上する。
なお、本実施例ではステンレスやタングステン等金属製の電極としたが、この表面を高圧側電極、及び接地側電極に、耐アーク放電及び耐磨耗性を有する非絶縁または絶縁性皮膜を施すことにより、アーク放電やキャビテーションの影響による電極の欠損をさらに防止し、長期安定性及び信頼性の向上を実現することができる。 4 is a schematic configuration diagram of a water treatment apparatus showing Embodiment 2 of the present invention, and FIG. 5 is a cross-sectional view of the electrode portion of FIG. In the figure, 9 is a rectifying spacer and 10 is a rotor blade.
Other reference numerals are the same as those in the first embodiment. In this embodiment, the assembled electrodes 8 are arranged at six locations, and the rectifying spacers 9 are arranged at the center of the pipe line of the main body 2 with a certain distance from the pipe wall. With this configuration, it is possible to further increase the processing scale per unit device, and to prevent a reduction in processing efficiency due to the expansion of the processing scale. Furthermore, the to-be-processed water 1 is stirred in the outer peripheral direction by the rotary blade 10 applied to the flow straightening spacer. As a result, the material to be treated such as organic matter contained in the water to be treated comes into uniform contact with radicals, electric fields, or ultraviolet rays generated by the discharge, thereby improving the treatment efficiency.
In this embodiment, the electrodes are made of metal such as stainless steel or tungsten, but this surface is coated with a non-insulating or insulating film having arc discharge resistance and wear resistance on the high voltage side electrode and the ground side electrode. Thus, it is possible to further prevent the electrode from being lost due to the influence of arc discharge or cavitation, and to realize long-term stability and improved reliability.

本発明の水処理装置は、微生物や細菌類の不活化に絶大な効果が見込まれる。特にオゾン等の化学的な処理のみでは大きな効果が期待できなかった、クリプトスポリジウム等のオゾン耐性微生物や、近年問題視されているバラスト水の殺菌処理などにも有効である。
また、水処理に限定せず、ＰＣＢの分解や薬品の無害化処理等、その他多用な液体について、キャビテーション発生ノズルの後段において被処理液体の飽和蒸気圧以下まで圧力を低下させ、キャビテーションが発生するものについては処理することができ、幅広い分野での適用が可能である。 The water treatment apparatus of the present invention is expected to have a great effect on inactivating microorganisms and bacteria. In particular, it is also effective for ozone-resistant microorganisms such as Cryptosporidium, which have not been expected to have a great effect only by chemical treatment such as ozone, and sterilization treatment of ballast water, which has been regarded as a problem in recent years.
In addition to water treatment, for other various liquids such as PCB decomposition and chemical detoxification treatment, the pressure is lowered below the saturated vapor pressure of the liquid to be treated at the subsequent stage of the cavitation generating nozzle, and cavitation occurs. Things can be processed and can be applied in a wide range of fields.

本発明の実施例１を示す水処理装置の概略構成図The schematic block diagram of the water treatment apparatus which shows Example 1 of this invention. 図１の電極部分の断面図Sectional view of the electrode portion of FIG. 図２の電極部分の拡大断面図2 is an enlarged cross-sectional view of the electrode portion of FIG. 本発明の実施例２を示す水処理装置の概略構成図The schematic block diagram of the water treatment apparatus which shows Example 2 of this invention. 図２の電極部分の断面図Sectional view of the electrode portion of FIG. 従来の水処理装置を示す概略構成図Schematic configuration diagram showing a conventional water treatment device

符号の説明Explanation of symbols

１ 被処理水
２ 本体
２ａ ノズル
３ 高圧側電極
４ 接地側電極
５ 放電部
６ａ 単相高電圧電源
６ｂ ３相高電圧電源
７ 処理水
８ 組電極
９ 整流スペーサ
１０ 回転翼 DESCRIPTION OF SYMBOLS 1 To-be-processed water 2 Main body 2a Nozzle 3 High voltage side electrode 4 Ground side electrode 5 Discharge part 6a Single phase high voltage power supply 6b Three phase high voltage power supply 7 Process water 8 Assembly electrode 9 Rectification spacer 10 Rotary blade

Claims (4)

筒状の本体と、その前段に設けたベンチュリ形状のノズルと、前記ノズル後段のキャビテーション気泡空間に設けた高圧側電極と接地側電極とからなる放電部とを有し、前記ノズル側から被処理水を一定の圧力で送給して微小キャビテーション気泡を発生させ、前記放電部近傍を通過するキャビテーション気泡空間に放電プラズマを形成させて、前記被処理水中に含有する有機物等の被処理物質の分解や合成等の処理を行う水処理装置において、
前記放電部は、高圧側電極に平行かつ等間隔に配置した接地側電極とからなる組電極とし、前記組電極を前記本体の内壁から中心部に向けて突出させこれを円周方向に少なくとも３組設けるとともに、前記組電極の高圧側電極に３相の高電圧電源からそれぞれＲ相、Ｓ相、Ｔ相を接続する構成にしたことを特徴とする水処理装置。 It has a cylindrical body, a venturi-shaped nozzle provided in the front stage thereof, and a discharge part composed of a high-voltage side electrode and a ground side electrode provided in the cavitation bubble space in the rear stage of the nozzle, and is processed from the nozzle side. Water is supplied at a constant pressure to generate micro cavitation bubbles, and discharge plasma is formed in the cavitation bubble space that passes in the vicinity of the discharge part, thereby decomposing the target substance such as organic matter contained in the target water. In water treatment equipment that performs processing such as
The discharge part is an assembled electrode composed of ground-side electrodes arranged in parallel to and at equal intervals to the high-voltage side electrode, and the assembled electrode protrudes from the inner wall of the main body toward the central part, and is at least 3 in the circumferential direction. A water treatment apparatus characterized by having a configuration in which an R phase, an S phase, and a T phase are connected to a high-voltage side electrode of the assembled electrode from a three-phase high-voltage power source, respectively. 前記組電極は３の倍数組設けられ、それぞれの組電極の高圧側電極に３相の高電圧電源からＲ相、Ｓ相、Ｔ相を接続する構成にしたことを特徴とする請求項１記載の水処理装置。   2. The assembly electrode according to claim 1, wherein the assembly electrode is provided in multiples of 3, and the R phase, S phase, and T phase are connected to the high-voltage side electrode of each assembly electrode from a three-phase high-voltage power source. Water treatment equipment. 前記被処理水が前記組電極の放電空間近傍を流れるように、前記本体の中央部に略同心円状に整流スペーサを設けたことを特徴とする請求項１または２記載の水処理装置。 Wherein as the water to be treated flows through the discharge space near the set electrode, water treatment apparatus according to claim 1, wherein in that a rectifier spacer substantially concentrically in a central portion of the body. 前記整流スペーサは、前記被処理水が外周方向への回転流れを形成するように回転翼を施した形状とすることを特徴とする請求項３記載の水処理装置。
The water treatment device according to claim 3, wherein the rectifying spacer has a shape in which a rotating blade is provided so that the water to be treated forms a rotational flow in an outer peripheral direction.
JP2008036073A 2008-02-18 2008-02-18 Water treatment equipment Expired - Fee Related JP4849382B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008036073A JP4849382B2 (en) 2008-02-18 2008-02-18 Water treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008036073A JP4849382B2 (en) 2008-02-18 2008-02-18 Water treatment equipment

Publications (3)

Publication Number Publication Date
JP2009190003A JP2009190003A (en) 2009-08-27
JP2009190003A5 JP2009190003A5 (en) 2011-08-18
JP4849382B2 true JP4849382B2 (en) 2012-01-11

Family

ID=41072517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008036073A Expired - Fee Related JP4849382B2 (en) 2008-02-18 2008-02-18 Water treatment equipment

Country Status (1)

Country Link
JP (1) JP4849382B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150117916A (en) * 2014-04-11 2015-10-21 주식회사 플라즈마코리아 A device for recycling cutting oil using plasma

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5464692B2 (en) * 2009-08-21 2014-04-09 株式会社安川電機 Water treatment equipment
US9023214B2 (en) * 2010-02-10 2015-05-05 Aic, Llc Method and apparatus for applying plasma particles to a liquid and use for disinfecting water
KR101213997B1 (en) 2010-12-01 2012-12-20 한국기초과학지원연구원 Apparatus for underwater discharge
JP5799503B2 (en) * 2010-12-28 2015-10-28 芝浦メカトロニクス株式会社 Submerged plasma generator, submerged plasma processing apparatus, submerged plasma generating method, and submerged plasma processing method
JP5737606B2 (en) * 2010-12-28 2015-06-17 芝浦メカトロニクス株式会社 Plasma generating apparatus, plasma processing apparatus, plasma generating method, and plasma processing method
JP5896012B2 (en) * 2012-03-27 2016-03-30 オブシェストヴォ エス オグラニチェンノィ オトゥヴェトゥストゥヴェンノスティユ “プラズマ−プロ” Equipment for removing organic and chemical microbial contaminants from water
JP6164801B2 (en) * 2012-05-08 2017-07-19 三菱重工業株式会社 Decontamination apparatus and decontamination method
JP6296480B2 (en) * 2012-09-26 2018-03-20 国立大学法人佐賀大学 Liquid processing apparatus and liquid processing method
JP5522247B2 (en) * 2012-09-28 2014-06-18 ダイキン工業株式会社 Discharge unit
US10570044B2 (en) * 2013-02-18 2020-02-25 Biopuremax (2015) Ltd. Method and system for treating water
JP6208968B2 (en) * 2013-04-08 2017-10-04 Ｇｌｏｂａｌ Ｅｎｅｒｇｙ Ｔｒａｄｅ株式会社 Water treatment method and water treatment apparatus
US9868653B2 (en) * 2013-05-01 2018-01-16 Nch Corporation System and method for treating water systems with high voltage discharge and ozone
JP5879530B2 (en) * 2013-11-18 2016-03-08 パナソニックＩｐマネジメント株式会社 Liquid processing equipment
JP6605797B2 (en) * 2014-10-15 2019-11-13 株式会社栗田製作所 Fluid plasma generation method and fluid plasma generator
WO2016129431A1 (en) * 2015-02-13 2016-08-18 日本スピンドル製造株式会社 Dispersion method and dispersion apparatus for substance to be treated, and method for producing mixed liquid of treated substance and dispersion medium produced thereby
JP2018058047A (en) * 2016-10-07 2018-04-12 富山県 Wet type atomization method for raw material and wet type atomization device therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3257682B2 (en) * 1990-08-01 2002-02-18 亮拿 佐藤 Arc treatment equipment and arc treated water
JP2003062579A (en) * 2001-08-27 2003-03-04 Kobe Steel Ltd Treating method of liquid and device therefor
WO2007138773A1 (en) * 2006-05-31 2007-12-06 Kabushiki Kaisha Yaskawa Denki Water treatment apparatus
JP4813443B2 (en) * 2007-11-14 2011-11-09 株式会社安川電機 Water treatment equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150117916A (en) * 2014-04-11 2015-10-21 주식회사 플라즈마코리아 A device for recycling cutting oil using plasma
KR101626376B1 (en) * 2014-04-11 2016-06-01 주식회사 플라즈마코리아 A device for recycling cutting oil using plasma

Also Published As

Publication number Publication date
JP2009190003A (en) 2009-08-27

Similar Documents

Publication Publication Date Title
JP4849382B2 (en) Water treatment equipment
JP4813443B2 (en) Water treatment equipment
JP4453052B2 (en) Water treatment equipment
JP5464692B2 (en) Water treatment equipment
KR101882424B1 (en) Water treatment device using plasma
JP2004268003A (en) Underwater discharge plasma method and liquid treatment apparatus
JP2010022991A (en) Liquid treatment device and liquid treatment method
JP2005058887A (en) Waste water treatment apparatus using high-voltage pulse
CN101215027A (en) Method and device for treating waste water by employing low-temperature plasma technique
US9409800B2 (en) Electric arc for aqueous fluid treatment
CN107673445A (en) A kind of method of literary formula trunnion discharge plasma processing waste water
JP2009106910A (en) Fluid treatment apparatus
JP2009056364A (en) Piping type water treatment apparatus
KR101497591B1 (en) Apparatus for treating water using discharge in reactor
KR200191269Y1 (en) Ultrasonic wave device for waste water treatment using hollow fiber filter
CN105967270B (en) The processing method and processing device of aniline in a kind of degradation sewage
Wu et al. Decomposition of chloroform and succinic acid by ozonation in a suction-cavitation system: effects of gas flow
Ghasemi et al. A review of pulsed power systems for degrading water pollutants ranging from microorganisms to organic compounds
CN106904696B (en) Jet aeration electrochemical oxidation repair system for brackish black and odorous water body
JP4842895B2 (en) Fluid processing apparatus and fluid processing method
US11912595B2 (en) Groundwater circulation well system with pressure-adjustable hydrodynamic cavitation
US11027990B2 (en) Plasma-based methods and systems for treating waters with high electrical conductivity and/or low surface tension
RU2152359C1 (en) Device for cleaning and decontamination of water by high-voltage electrical discharges
CN207435114U (en) A kind of device of text formula trunnion discharge plasma processing waste water
CN107265553A (en) The water treatment facilities and method for treating water of a kind of dielectric barrier discharge

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110114

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110114

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110704

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110812

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: 20110926

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111009

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141028

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees