JP2003116971A - Disinfection method and disinfection device for waste water - Google Patents
Disinfection method and disinfection device for waste waterInfo
- Publication number
- JP2003116971A JP2003116971A JP2001318498A JP2001318498A JP2003116971A JP 2003116971 A JP2003116971 A JP 2003116971A JP 2001318498 A JP2001318498 A JP 2001318498A JP 2001318498 A JP2001318498 A JP 2001318498A JP 2003116971 A JP2003116971 A JP 2003116971A
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- Prior art keywords
- disinfectant
- wastewater
- disinfection
- granular
- halogen
- 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.)
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- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排水を消毒する方
法及び装置に関する。本発明は、特に、雨水を含む下水
の消毒処理に好ましく適用することができる。更に、本
発明は、合流式下水道における雨天時越流水の消毒処理
に特に好ましく適用することができる。FIELD OF THE INVENTION The present invention relates to a method and apparatus for disinfecting waste water. The present invention can be particularly preferably applied to disinfection treatment of sewage including rainwater. Further, the present invention can be particularly preferably applied to disinfection treatment of overflow water in rainy weather in a combined sewer system.
【０００２】[0002]
【従来の技術】従来から下水を対象として用いられてい
る消毒剤としては、液体塩素、次亜塩素酸ナトリウム、
次亜塩素酸カルシウム、二酸化塩素等が挙げられる。こ
れらのうち、次亜塩素酸カルシウムは粉末状又は顆粒状
の形態で市場に供給されている。次亜塩素酸カルシウム
に限らず、粉末状又は顆粒状の消毒剤を下水などの排水
の消毒処理に使用する場合には、消毒剤を予め水に溶解
して溶液を調製するか或いは水に懸濁してスラリー状溶
液を調製した後に、これを消毒対象の排水に注入すると
いった方法が一般的である。2. Description of the Related Art Disinfectants that have been conventionally used for sewage include liquid chlorine, sodium hypochlorite,
Examples include calcium hypochlorite and chlorine dioxide. Of these, calcium hypochlorite is marketed in the form of powder or granules. Not only calcium hypochlorite but also powdered or granular disinfectant is used for disinfecting wastewater such as sewage, the disinfectant should be dissolved in water beforehand to prepare a solution or suspended in water. A general method is to prepare a slurry-like solution by making it cloudy and then inject this into the wastewater to be disinfected.
【０００３】また、粉末状又は顆粒状の消毒剤を予め溶
解せずに固体のまま使用する方法としては、粉末状又は
顆粒状の消毒剤をスリット又はストレーナ状の開口部を
有する容器内に充填し、これを消毒対象の排水の流水部
に浸漬するという方法がある。或いは、錠剤の消毒剤を
そのまま消毒対象水に添加して、錠剤を消毒対象水中に
沈降させてゆっくりと自然に溶解させるという方法があ
り、これは下水よりは寧ろ主として水浴用プールの消毒
などにおいて一般的に用いられている。As a method of using a powder or granular disinfectant in a solid state without previously dissolving it, the powder or granular disinfectant is filled in a container having slits or strainer-like openings. Then, there is a method of immersing this in the flowing part of the wastewater to be disinfected. Alternatively, there is a method in which the disinfectant for tablets is added as it is to the water to be disinfected, and the tablets are allowed to settle in the water to be disinfected and slowly and naturally dissolve. It is commonly used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、粉末状
又は顆粒状の消毒剤を消毒対象水に加える上記の従来法
には、以下のような問題点がある。However, the above conventional method of adding a powdery or granular disinfectant to water to be disinfected has the following problems.
【０００５】まず、消毒剤を予め水に溶解又は懸濁して
から消毒対象水に注入する方法においては、消毒剤を溶
解する為の設備、即ち溶解槽、撹拌装置、イジェクタな
どが必要であり、設備コストがかかった。更に、かかる
方法では、水に溶解又は懸濁した後の消毒水を消毒対象
水への注入点まで圧送するための設備、即ち移送ポン
プ、イジェクタなどが必要であり、同様に設備コストが
かかった。また、スラリー状の消毒液を消毒対象水に注
入する場合には、消毒剤が溶解槽内に不均一に分布する
ことを防止するために、溶解槽での十分な撹拌を継続し
なければならない。また、消毒剤が配管内に堆積して閉
塞することを防止するために、移送配管内の消毒液の流
速を一定速度以上に保つ必要がある。First, in the method of preliminarily dissolving or suspending a disinfectant in water and then injecting it into the water to be disinfected, facilities for dissolving the disinfectant, that is, a dissolution tank, a stirring device, an ejector, etc. are required, Equipment cost was required. Furthermore, in such a method, equipment for pumping the disinfecting water after being dissolved or suspended in water to the injection point into the water to be disinfected, that is, a transfer pump, an ejector, etc., is required, and similarly, the equipment cost is required. . When pouring a slurry disinfectant into the water to be disinfected, it is necessary to continue sufficient stirring in the dissolution tank to prevent the disinfectant from being unevenly distributed in the dissolution tank. . Further, in order to prevent the disinfectant from accumulating and clogging in the pipe, it is necessary to keep the flow velocity of the disinfecting liquid in the transfer pipe at a constant speed or more.
【０００６】また、近年、消毒剤を用いて合流式下水道
における所謂雨天時越流水を消毒する技術が注目されて
いる。合流式下水道は、一般家庭、事務所、公共施設等
から排出される汚水や降雨時の雨水を集めて下水道管渠
を通して下水処理場に送り、ここで浄化処理した後に放
流水域に放流する施設であるが、集中豪雨などによって
大量の雨水が下水道管渠に流入した場合には、計画流量
値を超える分の雨水を含む下水（雨天時下水）は、中継
ポンプ所、雨水吐き室、下水処理場などから、一時処理
された後又は未処理の状態で放流水域に放流される。こ
れらの雨天時下水の一時処理或いは未処理での放流は、
浸水などの被害を未然に防ぐために行われているもので
あるが、雨天時下水には汚水が含まれるため、放流水域
への放流に際しては、大腸菌群などの細菌の消毒が必要
である。このような合流式下水道における雨天時下水の
消毒を消毒液の注入によって行う場合には、消毒液の必
要注入量は、降雨状態によって左右され、大きく変動す
る。このために、雨天時下水の確実な消毒処理を行うた
めには、常に必要注入量以上の消毒液を準備しておく必
要がある。しかしながら、一旦水に溶解した消毒剤は、
固体状態に比べて消毒活性の低下が著しく、消毒剤を溶
液状態で保管することは困難である。従って、必要注入
量以上に調製した溶液は廃棄せざるを得ず、運転コスト
の増大及び資源の無駄につながる。Further, in recent years, a technique for disinfecting so-called storm water overflow in a combined sewer system using an antiseptic has attracted attention. Combined sewer is a facility that collects sewage discharged from ordinary households, offices, public facilities, etc. and rainwater at the time of rainfall and sends it to the sewage treatment plant through the sewer pipe, where it is purified and then released to the discharge water area. However, if a large amount of rainwater flows into the sewer pipe due to a heavy rain, the sewage containing rainwater in excess of the planned discharge value (rainwater sewage) will be transferred to a relay pump station, rainwater discharge room, or sewage treatment plant. Therefore, it is discharged to the discharge water area after being treated temporarily or in an untreated state. Discharge of these sewage in rainy weather with or without treatment,
This is done to prevent damage such as inundation, but since sewage in rainy weather contains sewage, it is necessary to disinfect bacteria such as coliform bacteria when releasing it into the discharge area. In the case of disinfecting sewage in rainy weather in such a combined sewer system by injecting a disinfectant solution, the required injection amount of the disinfectant solution is greatly influenced by the rainfall condition and greatly fluctuates. For this reason, in order to perform a reliable disinfection treatment of sewage in rainy weather, it is necessary to always prepare a disinfecting solution in an amount not less than the required injection amount. However, the disinfectant once dissolved in water
The disinfection activity is significantly lower than that in the solid state, and it is difficult to store the disinfectant in a solution state. Therefore, the solution prepared in excess of the required injection amount must be discarded, resulting in an increase in operating cost and waste of resources.
【０００７】更に、消毒対象水の流水部に固体の消毒剤
を浸漬する方法や錠剤の消毒剤を自然溶解させる方法で
は、消毒剤注入量の制御が困難であり、過剰注入や注入
不足が生じる恐れがある。Further, in the method of immersing the solid disinfectant in the running water portion of the water to be disinfected or the method of naturally dissolving the disinfectant of tablets, it is difficult to control the injection amount of the disinfectant, resulting in excessive injection or insufficient injection. There is a fear.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記のような
従来技術の問題点を解決し、粉末状又は顆粒状の消毒剤
を用いる消毒処理において、効率のよい消毒剤の注入を
行うと共に、注入設備の省スペースを図ることのできる
消毒方法及び消毒装置を提供することを目的とする。特
に、本発明は、合流式下水道における雨天時越流水を効
果的に消毒することのできる消毒方法及び消毒装置を提
供することを目的とする。The present invention solves the problems of the prior art as described above, and in the disinfection process using a powdery or granular disinfectant, the disinfectant is efficiently injected and An object of the present invention is to provide a disinfection method and a disinfection device capable of saving space in an injection facility. Particularly, it is an object of the present invention to provide a disinfection method and a disinfection device that can effectively disinfect overflow water in a combined sewer system in case of rain.
【０００９】[0009]
【発明の実施の形態】上記の課題を解決するために、本
発明の一態様は、ハロゲン系消毒剤を排水に注入して排
水を消毒する方法において、粉末状又は顆粒状のハロゲ
ン系消毒剤を粉末状又は顆粒状のままで注入点まで移送
して、注入点において消毒剤を消毒対象の排水に加えて
混合することを特徴とする排水の消毒方法に関する。ま
た、本発明は更にかかる消毒方法を実施するための装置
にも関する。したがって本発明の他の態様は、粉末状又
は顆粒状のハロゲン系消毒剤を貯留する貯留槽；貯留槽
に接続されており、消毒剤を粉末状又は顆粒状のままで
注入点まで移送するための消毒剤移送配管；消毒剤移送
配管に接続されており、配管内を移送されてきた粉末状
又は顆粒状のハロゲン系消毒剤を消毒対象の排水に加え
るための消毒剤注入装置；を具備することを特徴とする
排水の消毒装置に関する。BEST MODE FOR CARRYING OUT THE INVENTION In order to solve the above problems, one aspect of the present invention is a method for injecting a halogen-based disinfectant into wastewater to disinfect the wastewater, which comprises a powdery or granular halogen-based disinfectant. The present invention relates to a method for disinfecting wastewater, which comprises transferring powder to the injection point in a powder or granular form, and adding and mixing the disinfectant to the wastewater to be disinfected at the injection point. The invention also relates to a device for carrying out such a disinfection method. Therefore, another aspect of the present invention is to store a powdered or granular halogen-based disinfectant in a storage tank; the storage tank is connected to the storage tank to transfer the disinfectant in powdery or granular form to the injection point. Disinfectant transfer pipe; a disinfectant injection device connected to the disinfectant transfer pipe for adding the powdery or granular halogen-based disinfectant transferred in the pipe to the wastewater to be disinfected; The present invention relates to a drainage disinfection device.
【００１０】[0010]
【発明の実施の形態】以下に、本発明の一実施形態の例
を図１を参照して説明する。以下の説明は、本発明の一
具体例を示すもので、本発明はこれによって限定される
ものではない。DETAILED DESCRIPTION OF THE INVENTION An example of an embodiment of the present invention will be described below with reference to FIG. The following description shows one specific example of the present invention, and the present invention is not limited thereto.
【００１１】図１に、本発明に係る排水の消毒装置の一
具体例を示す。消毒剤貯留槽１には、粉末状又は顆粒状
のハロゲン系消毒剤８が収容されている。消毒剤８は、
バルブ４を開放することにより、消毒剤切り出し装置２
と計量装置３とを介して、消毒剤移送配管５に送られ
る。消毒剤移送配管５の末端は消毒剤注入装置９に接続
され、ここで消毒剤８が消毒対象の排水８に加えられ
る。図１に示す消毒装置においては、消毒剤注入装置９
は、モータ６に接続した撹拌翼７が取り付けられてお
り、この撹拌翼７の作用により、粉末状又は顆粒状のハ
ロゲン系消毒剤８が被処理対象水中に溶解される。FIG. 1 shows a specific example of the drainage disinfecting apparatus according to the present invention. The disinfectant storage tank 1 contains a powdered or granular halogen-based disinfectant 8. The disinfectant 8 is
By opening the valve 4, the disinfectant cutting device 2
And the metering device 3 to the disinfectant transfer pipe 5. The end of the disinfectant transfer pipe 5 is connected to a disinfectant injection device 9, where the disinfectant 8 is added to the wastewater 8 to be disinfected. In the disinfection device shown in FIG. 1, the disinfectant injection device 9
Is equipped with a stirring blade 7 connected to the motor 6, and the action of the stirring blade 7 causes the powdery or granular halogen-based disinfectant 8 to be dissolved in the water to be treated.
【００１２】なお、消毒剤注入装置は、好ましくは、消
毒対象の排水の噴流を生起せしめる手段を有していて、
生起せしめられた噴流の作用によって消毒剤注入装置内
が減圧状態となり、この減圧により発生する吸引力によ
って粉末状又は顆粒状のハロゲン系消毒剤が移送せしめ
られるような構造を有していることが好ましい。このよ
うな構造の幾つかの具体例を図２〜図４に示す。The disinfectant injection device preferably has means for producing a jet of drainage to be disinfected,
The inside of the disinfectant injection device is depressurized by the action of the generated jet, and the powder- or granular halogen-based disinfectant is transferred by the suction force generated by this depressurization. preferable. Some specific examples of such a structure are shown in FIGS.
【００１３】図２に示す消毒剤注入装置９は、モータ６
と撹拌翼７とを接続するシャフトの周りを囲む細管２４
と、細管２４の終端部付近を囲むカバー２１から構成さ
れている。細管２４の終端部は排水８中に配置されてお
り、細管の上部には消毒剤移送配管５が接続されてい
る。モータ６により撹拌翼７を回転させることによっ
て、カバー内に水流が発生し、細管の終端部の近傍で噴
流２２が生じる。この噴流によって細管２４内が減圧状
態となり、これによって生じる吸引力により粉末状又は
顆粒状の消毒剤２３が細管２４の終端部に向かって空気
移送される。移送された消毒剤８は、水流２２に加えら
れ、撹拌翼７によって消毒対象排水と混合される。The disinfectant injection device 9 shown in FIG.
A thin tube 24 surrounding the shaft connecting the stirring blade 7 with the stirring blade 7.
And a cover 21 surrounding the end of the thin tube 24. The end of the thin tube 24 is arranged in the drainage 8, and the disinfectant transfer pipe 5 is connected to the upper part of the thin tube. By rotating the stirring blade 7 by the motor 6, a water flow is generated in the cover, and a jet flow 22 is generated in the vicinity of the end portion of the thin tube. Due to this jet flow, the inside of the thin tube 24 is decompressed, and the suction force generated thereby causes the powdery or granular disinfectant 23 to be air-transferred toward the end portion of the thin tube 24. The transferred disinfectant 8 is added to the water flow 22 and mixed with the wastewater to be disinfected by the stirring blade 7.
【００１４】また、図３に示す消毒剤注入装置９は、排
水を流す配管内に、オリフィスを形成する板状部材３１
が配置されている。そして、オリフィスの出口近傍に消
毒剤移送配管５が接続されている。排水の水流がオリフ
ィスを通過することによって噴流３２が生起し、この噴
流により消毒剤移送配管５の末端付近が減圧状態とな
り、これによって生じる吸引力により粉末状又は顆粒状
の消毒剤２３が噴流に向かって移送され、噴流の撹拌作
用によって排水と混合される。Further, the disinfectant injection device 9 shown in FIG. 3 has a plate-like member 31 forming an orifice in a pipe through which drainage flows.
Are arranged. The disinfectant transfer pipe 5 is connected near the outlet of the orifice. A jet 32 is generated by the water flow of the wastewater passing through the orifice, and the jet causes a pressure reduction in the vicinity of the end of the disinfectant transfer pipe 5, and the suction force generated by this causes the powder or granular disinfectant 23 to become a jet. And is mixed with the wastewater by the stirring action of the jet.
【００１５】更に、図４に示す消毒剤注入装置９は、排
水の水流８中にポンプ４１が配置され、これから排水が
配管４３内に導入され、エジェクタ４２を通して再び水
流８に戻される。そして、消毒剤移送配管５がエジェク
タ４２に接続されている。エジェクタ４２によって噴流
が発生せしめられて、消毒剤移送配管５の末端付近が減
圧状態となり、これによって生じる吸引力により粉末状
又は顆粒状の消毒剤が配管４３に向かって移送され、噴
流の撹拌作用によって排水と混合される。消毒剤注入装
置内を減圧状態にするための手段としては、上記の構成
の他に、消毒剤注入装置９の近傍に吸引機を設置するこ
ともできる。Further, in the disinfectant injection device 9 shown in FIG. 4, the pump 41 is arranged in the water stream 8 of the waste water, the waste water is introduced into the pipe 43, and is returned to the water stream 8 through the ejector 42. The disinfectant transfer pipe 5 is connected to the ejector 42. A jet flow is generated by the ejector 42, and the vicinity of the end of the disinfectant transfer pipe 5 is depressurized, and the powder or granular disinfectant is transferred toward the pipe 43 by the suction force generated thereby, and the stirring action of the jet flow is achieved. Mixed with drainage. As a means for reducing the pressure inside the disinfectant injection device, a suction device may be installed near the disinfectant injection device 9 in addition to the above configuration.
【００１６】本発明に係る方法及び装置は、合流式下水
道における雨天時越流水の消毒処理に好適に適用するこ
とができる。この場合、消毒剤の注入点としては、下水
処理場にあっては最初沈殿池越流水の放流配管、ポンプ
所にあっては雨水沈砂池、雨水吐き口にあっては雨水吐
き室などを挙げることができる。また、本発明はこれ以
外にも、工業施設排水の消毒処理、スイミングプール用
水の消毒処理、スパ用水の消毒処理などに適用すること
ができる。The method and apparatus according to the present invention can be suitably applied to the disinfection treatment of overflow water during rain in a combined sewer system. In this case, as the injection point of the disinfectant, the first settling basin overflow water discharge pipe at the sewage treatment plant, the rainwater settling basin at the pump station, the rainwater spout chamber at the rainwater spout, etc. be able to. In addition to the above, the present invention can be applied to disinfection treatment of industrial facility drainage, swimming pool water disinfection, spa water disinfection treatment, and the like.
【００１７】本発明において用いることのできる粉末状
又は顆粒状のハロゲン系消毒剤としては、例えば、次亜
塩素酸カルシウムなどの塩素系消毒剤、１−ブロモ−３
−クロロ−５，５−ジメチルヒダントン（ＢＣＤＭＨ）
などの臭素系消毒剤などを用いることができる。Examples of the powdery or granular halogen-based disinfectant that can be used in the present invention include chlorine-based disinfectants such as calcium hypochlorite and 1-bromo-3.
-Chloro-5,5-dimethylhydantone (BCDMH)
Brominated disinfectants such as
【００１８】[0018]
【発明の効果】本発明によれば、粉末状又は顆粒状の消
毒剤を用いて消毒を行う場合に、消毒剤を溶解する為の
特別の設備や、消毒剤を溶解した溶液を注入点まで移送
するための設備が不要である。従って、これらの設備に
関わる動力の削減、設備設置スペースの縮小、維持管理
に要する労力の削減を行うことが可能である。また、消
毒対象水への消毒剤の注入の前に消毒剤を水に溶解する
ことがなく、必要量のみを必要時に貯留槽から排出する
ので、消毒剤の注入量を適切に制御することが可能であ
り、注入が終了した時点で無駄になる消毒剤溶解液が生
じない。更に、消毒剤を溶解する水を予め確保すること
が困難な設備においても、確実な消毒処理を行うことが
可能である。更には、消毒剤注入装置において噴流を生
起せしめる構造を採用することにより、消毒剤移送配管
内を減圧状態として粉末状又は顆粒状の消毒剤を移送す
ることで、移送配管中に破損が生じても、消毒剤が破損
部分から吹き出すことがない。According to the present invention, when disinfecting with a powdery or granular disinfectant, special equipment for dissolving the disinfectant and a solution containing the disinfectant dissolved up to the injection point. No equipment for transfer is required. Therefore, it is possible to reduce the power required for these facilities, reduce the facility installation space, and reduce the labor required for maintenance. Also, since the disinfectant is not dissolved in water before the disinfectant is injected into the water to be disinfected and only the necessary amount is discharged from the storage tank when needed, it is possible to appropriately control the disinfectant injection amount. It is possible and there is no wasted disinfectant solution at the end of the injection. Furthermore, it is possible to perform a reliable disinfection process even in equipment where it is difficult to previously secure water in which the disinfectant is dissolved. Furthermore, by adopting a structure that causes a jet flow in the disinfectant injection device, the disinfectant transfer pipe is depressurized and the powder or granular disinfectant is transferred, causing damage to the transfer pipe. However, the disinfectant does not blow out from the damaged part.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一態様に係る排水の消毒装置の概念を
示す図である。FIG. 1 is a diagram showing a concept of a drainage disinfection device according to one embodiment of the present invention.
【図２】本発明の好ましい一態様に係る装置における消
毒剤注入装置の構成を示す図である。FIG. 2 is a diagram showing a configuration of a disinfectant injection device in the device according to a preferred embodiment of the present invention.
【図３】本発明の好ましい他の一態様に係る装置におけ
る消毒剤注入装置の構成を示す図である。FIG. 3 is a diagram showing a configuration of a disinfectant injection device in an apparatus according to another preferred embodiment of the present invention.
【図４】本発明の好ましい他の一態様に係る装置におけ
る消毒剤注入装置の構成を示す図である。FIG. 4 is a diagram showing the configuration of a disinfectant injection device in an apparatus according to another preferred aspect of the present invention.
Claims (5)
を消毒する方法において、粉末状又は顆粒状のハロゲン
系消毒剤を粉末状又は顆粒状のままで注入点まで移送し
て、注入点において消毒剤を消毒対象の排水に加えて混
合することを特徴とする排水の消毒方法。1. A method for injecting a halogen-based disinfectant into wastewater to disinfect the wastewater, wherein the powdery or granular halogen-based disinfectant is transferred to the injection point in the form of powder or granules, and then the injection point. The method for disinfecting wastewater, wherein the disinfectant is added to and mixed with the wastewater to be disinfected.
請求項１に記載の方法。2. The method according to claim 1, wherein the wastewater to be disinfected is sewage including rainwater.
含むものである請求項１又は２に記載の方法。3. The method according to claim 1 or 2, wherein the halogen-based disinfectant contains bromine or iodine.
貯留する貯留槽；貯留槽に接続されており、消毒剤を粉
末状又は顆粒状のままで注入点まで移送するための消毒
剤移送配管；消毒剤移送配管に接続されており、配管内
を移送されてきた粉末状又は顆粒状のハロゲン系消毒剤
を消毒対象の排水に加えるための消毒剤注入装置；を具
備することを特徴とする排水の消毒装置。4. A storage tank for storing a powdered or granular halogen-based disinfectant; a disinfectant transfer which is connected to the storage tank and transfers the disinfectant in powder or granular form to the injection point. A pipe; a disinfectant injection device connected to the disinfectant transfer pipe for adding the powdery or granular halogen-based disinfectant transferred in the pipe to the wastewater to be disinfected; Disinfection device for drainage.
流を生起せしめる手段を有しており、生起せしめられた
噴流の作用によって消毒剤注入装置内が減圧状態となっ
て、この減圧により発生する吸引力によって粉末状又は
顆粒状のハロゲン系消毒剤が移送せしめられる請求項４
に記載の排水の消毒装置。5. The disinfectant injection device has means for generating a jet of wastewater to be disinfected, and the inside of the disinfectant injection device is depressurized by the action of the jet generated. The powdery or granular halogen-based disinfectant is transferred by the generated suction force.
Disinfection device for drainage described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001318498A JP2003116971A (en) | 2001-10-16 | 2001-10-16 | Disinfection method and disinfection device for waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001318498A JP2003116971A (en) | 2001-10-16 | 2001-10-16 | Disinfection method and disinfection device for waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003116971A true JP2003116971A (en) | 2003-04-22 |
Family
ID=19136191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001318498A Pending JP2003116971A (en) | 2001-10-16 | 2001-10-16 | Disinfection method and disinfection device for waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003116971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054373A1 (en) * | 2004-11-19 | 2006-05-26 | Ebara Corporation | Sewage treatment plant and method |
-
2001
- 2001-10-16 JP JP2001318498A patent/JP2003116971A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054373A1 (en) * | 2004-11-19 | 2006-05-26 | Ebara Corporation | Sewage treatment plant and method |
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