JP3136581B2 - Polarographic dissolved ozone measurement system - Google Patents
Polarographic dissolved ozone measurement systemInfo
- Publication number
- JP3136581B2 JP3136581B2 JP05027976A JP2797693A JP3136581B2 JP 3136581 B2 JP3136581 B2 JP 3136581B2 JP 05027976 A JP05027976 A JP 05027976A JP 2797693 A JP2797693 A JP 2797693A JP 3136581 B2 JP3136581 B2 JP 3136581B2
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- dissolved ozone
- sample liquid
- sample
- zero adjustment
- 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
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は，残留塩素（Ｃｌ2）や
溶存オゾン（Ｏ3）が含まれるサンプル液を導入し，そ
のサンプル液に含まれるの溶存オゾンの測定を行う溶存
オゾン測定装置に関し，干渉成分のＣｌ2はそのままで
測定対象の溶存オゾンのみを除去し，その溶存オゾンの
みを除去した液を用いてゼロ調を行うようにした溶存オ
ゾン測定装置に関するものである。The present invention relates to a residual chlorine (Cl 2) and the dissolved ozone (O 3) introducing a sample solution that contains, the sample solution dissolved ozone measuring device for measuring the dissolved ozone that in a The present invention relates to a dissolved ozone measuring apparatus in which only dissolved ozone to be measured is removed while Cl 2 as an interference component remains as it is, and zero adjustment is performed using a liquid from which only the dissolved ozone has been removed.
【０００２】[0002]
【従来の技術】オゾンはその強力な酸化力を利用して，
水処理（脱臭，脱色，殺菌，溶解鉄・マンガンの酸化除
去）や食品加工（脱臭，殺菌）等に用途が拡大されつつ
あり，特に上水の高度処理法への利用が注目されてい
る。オゾン処理を効率よく行い，適切な水質を得るため
には，オゾン注入後の水の溶存オゾン濃度を測定し，オ
ゾン濃度が目標値に等しくなるようにオゾン注入量を制
御する必要がある。しかしながら例えば水道水では塩素
を用いた殺菌も併用されるためポーラログラフ式溶存オ
ゾン測定装置では干渉成分である残存塩素の影響を除去
する必要がある。2. Description of the Related Art Ozone utilizes its strong oxidizing power,
Applications for water treatment (deodorization, decolorization, sterilization, oxidative removal of dissolved iron and manganese), food processing (deodorization, sterilization), and the like are expanding, and the use of water for advanced treatment is particularly attracting attention. In order to perform ozone treatment efficiently and obtain appropriate water quality, it is necessary to measure the dissolved ozone concentration of water after ozone injection and to control the ozone injection amount so that the ozone concentration becomes equal to a target value. However, for example, in tap water, sterilization using chlorine is also used, so in a polarographic dissolved ozone measuring device, it is necessary to remove the influence of residual chlorine which is an interference component.
【０００３】図２は従来のポーラログラフ式溶存オゾン
測定装置の要部を示す構成図である。図２において，１
は測定槽であり，この測定槽には回転電極２及び対極３
が配置されている。４はサンプル液のヘッドを一定に保
つサンプル液槽で，サンプル液は第１ポンプ５により測
定槽１に送水される。６は塩素の干渉を除去するための
試薬槽であり，試薬は第２ポンプ７を介して送水されサ
ンプル液と混合されて測定槽１に送水される。FIG. 2 is a configuration diagram showing a main part of a conventional polarographic dissolved ozone measuring apparatus. In FIG.
Denotes a measuring tank, in which the rotating electrode 2 and the counter electrode 3
Is arranged. Reference numeral 4 denotes a sample liquid tank for keeping the head of the sample liquid constant. The sample liquid is sent to the measuring tank 1 by the first pump 5. Reference numeral 6 denotes a reagent tank for removing the interference of chlorine. The reagent is sent through the second pump 7, mixed with the sample liquid, and sent to the measurement tank 1.
【０００４】そして，サンプル液と薬液の混合液は測定
槽１を流れる間に回転電極２と対極３により溶存オゾン
量が測定され，測定槽１からオーバフローしたサンプル
液は廃液となって排水される。なお，上記の装置におい
て回転電極２の先端はガラスビーズ９に埋め込まれてお
り，図示しないシーケンサからの司令により予め定めら
れた時間ごとに回転することにより汚れによる感度低下
を防止する。また，前記シーケンサは第１，第２ポンプ
５，７の駆動のシーケンスも行う。この様な従来例にお
いては，ゼロ調整は回転電極２を引き上げて空気中に暴
露するか，混合液のかわりにオゾンや塩素を含まない標
準液を測定槽１に流して行っている。The amount of dissolved ozone is measured by the rotating electrode 2 and the counter electrode 3 while the mixed solution of the sample solution and the chemical solution flows in the measuring tank 1, and the sample liquid overflowing from the measuring tank 1 is discharged as waste liquid. . In the above-described apparatus, the tip of the rotary electrode 2 is embedded in the glass beads 9 and rotates at predetermined time intervals by a command from a sequencer (not shown) to prevent a decrease in sensitivity due to contamination. The sequencer also performs a driving sequence of the first and second pumps 5 and 7. In such a conventional example, the zero adjustment is performed by pulling up the rotating electrode 2 and exposing it to the air, or by flowing a standard solution containing no ozone or chlorine into the measuring tank 1 instead of the mixed solution.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら，上記構
成のポーラログラフ式溶存オゾン測定装置においては，
ゼロ調整時に塩素の干渉を受けない状態（回転電極２を
引き上げて空気中に暴露したりオゾンや塩素を含まない
標準液を用いる）でゼロ調整を行うので，測定中も塩素
の干渉を除去する必要がある。そのため測定時間中は試
薬液を常に流しておく必要がある。However, in the polarographic type dissolved ozone measuring apparatus having the above configuration,
Zero adjustment is performed in the condition where there is no chlorine interference during the zero adjustment (pull the rotating electrode 2 up and expose it to the air or use a standard solution that does not contain ozone or chlorine). There is a need. Therefore, it is necessary to keep the reagent solution flowing during the measurement time.
【０００６】また，混合液の流量は毎分５０ｍｌ程度で
あり試薬とサンプル液の混合は所定の比で精密に行う必
要がある。そのため第１，第２ポンプは高精度なものが
要求される。更に試薬としては塩化カリウム，無水酢酸
ナトリウム，氷酢酸，硫酸アンモニウム等の所定量を混
合して試薬槽に入れておくが，所定量を消耗したらその
度に調合する必要があった。[0006] The flow rate of the mixed solution is about 50 ml per minute, and the mixing of the reagent and the sample solution must be performed precisely at a predetermined ratio. Therefore, high precision pumps are required for the first and second pumps. Further, as a reagent, a predetermined amount of potassium chloride, anhydrous sodium acetate, glacial acetic acid, ammonium sulfate, or the like is mixed and put in a reagent tank, but when the predetermined amount is consumed, it has to be prepared each time.
【０００７】本発明は上記従来技術の課題を解決するた
めになされたもので，サンプル液からオゾンのみを除去
した状態でゼロ調整を行うことにより，ゼロ調整の度に
回転電極を引き上げたり，オゾンや塩素を含まない標準
液を用いる必要がなく，塩素の干渉を除去するための試
薬も必要のないポーラログラフ式溶存オゾン測定装置を
提供することを目的としている。The present invention has been made to solve the above-mentioned problems of the prior art. By performing zero adjustment in a state where only ozone is removed from a sample liquid, the rotating electrode is pulled up every time the zero adjustment is performed, or the ozone is removed. It is an object of the present invention to provide a polarographic dissolved ozone measuring apparatus which does not require the use of a standard solution containing no chlorine or chlorine and does not require a reagent for removing the interference of chlorine.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に本発明は，オゾン及び塩素が含まれたサンプル水を導
入するサンプル液層と，該サンプル液層の底部から空気
を吹き込んで前記サンプル水をバブリングして前記オゾ
ンを除去する空気圧送手段と，前記容器のサンプル水を
導入する溶存オゾン測定装置からなり，該溶存オゾン測
定装置は前記バブリングによりオゾンが除去されたサン
プル水を用いてゼロ調を行うことを特徴とするものであ
る。In order to solve the above-mentioned problems, the present invention provides a sample liquid layer for introducing a sample water containing ozone and chlorine, and the above-mentioned sample liquid layer by blowing air from the bottom of the sample liquid layer. Air dispensing means for bubbling water to remove the ozone; and a dissolved ozone measuring device for introducing the sample water in the container, wherein the dissolved ozone measuring device uses the sample water from which ozone has been removed by the bubbling. Keying.
【０００９】[0009]
【作用】サンプル液に空気を吹き込むとオゾンのみが除
去される。このオゾンのみを除去したサンプル液を用い
てゼロ調整を行えば塩素を含んだ状態での出力が得ら
れ，その出力を差し引いた上でゼロ調を行えば試薬を用
いなくても正確なオゾンの測定を行うことができる。When air is blown into the sample liquid, only ozone is removed. If zero adjustment is performed using this sample solution from which only ozone has been removed, an output containing chlorine can be obtained, and if zero adjustment is performed after subtracting the output, accurate ozone generation can be achieved without using a reagent. A measurement can be made.
【００１０】[0010]
【実施例】次に図面を用いて本発明を説明する。図１は
本発明の溶存オゾン測定装置の一実施例の要部構成図で
ある。なお，図２と同一要素には同一符号を付して重複
する説明は省略する。図１において１０はサンプル液層
の底部に設けられた空気吹き出し装置である。１３は空
気を圧送する空気圧送ポンプ，１４は空気流量調節弁，
１５は電磁弁であり，これらは空気圧送手段を構成して
いる。１６はサンプル液層４の中程から流出させたサン
プル液をヘッド差により測定槽内に送出する流量調節
弁，２０は従来例で述べた回転電極２を回転させたり電
磁弁１５の開閉や流量調節弁１６を制御するシーケンサ
である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a configuration diagram of a main part of an embodiment of a dissolved ozone measuring apparatus according to the present invention. Note that the same elements as those in FIG. 2 are denoted by the same reference numerals, and redundant description will be omitted. In FIG. 1, reference numeral 10 denotes an air blowing device provided at the bottom of the sample liquid layer. 13 is an air pressure pump for pumping air, 14 is an air flow control valve,
Reference numeral 15 denotes an electromagnetic valve, which constitutes a pneumatic feeding means. Reference numeral 16 denotes a flow rate control valve for sending out the sample liquid discharged from the middle of the sample liquid layer 4 into the measuring tank by a head difference, and reference numeral 20 denotes the rotation of the rotary electrode 2 and the opening and closing of the electromagnetic valve 15 and the flow rate as described in the conventional example. This is a sequencer that controls the control valve 16.
【００１１】上記の構成において，シーケンサ２０がゼ
ロ調モードの司令を発すると空気圧送ポンプ１３が駆動
され，電磁弁１５が開となって空気吹き出し装置に空気
が送られる。その結果サンプル液槽４の底部から多数の
泡が発生し，この泡はサンプル液中に含まれるオゾンを
排出する（本発明者等の実験によればオゾンの排出はサ
ンプル液を流しながらバブリングを行っても十分に可能
である）。次に測定槽１内のサンプル液が十分に置換さ
れた時点でゼロ調を行う。In the above configuration, when the sequencer 20 issues a command in the zero adjustment mode, the air pressure pump 13 is driven, the solenoid valve 15 is opened, and air is sent to the air blowing device. As a result, a large number of bubbles are generated from the bottom of the sample liquid tank 4, and these bubbles discharge ozone contained in the sample liquid. (According to experiments by the present inventors, ozone is discharged by bubbling while flowing the sample liquid. It is possible to do so). Next, zero adjustment is performed when the sample liquid in the measurement tank 1 is sufficiently replaced.
【００１２】ゼロ調が終了したら電磁弁１５が閉となり
オゾンを含むサンプル液が測定槽１に送出されて測定槽
１内の液が置換した後通常の測定が行われる。なお，上
記の構成においてはシーケンサ２０により各部の駆動を
行う例について説明したが，必ずしもシーケンサを用い
なくても手動であってもよく，構成も図示の例に限るも
のではない。要はオゾンのみが除去されたサンプル液を
用いてゼロ調が行われれば良い。When the zero adjustment is completed, the solenoid valve 15 is closed, the sample liquid containing ozone is sent to the measuring tank 1 and the liquid in the measuring tank 1 is replaced, and a normal measurement is performed. In the above-described configuration, an example in which each unit is driven by the sequencer 20 has been described. However, the sequencer 20 may not necessarily be used, but may be manually operated, and the configuration is not limited to the illustrated example. In short, the zero adjustment may be performed using the sample liquid from which only ozone is removed.
【００１３】[0013]
【発明の効果】以上述べたように本発明によれば，サン
プル液槽内のサンプル液に空気を送ってバブリングを行
い，オゾンのみを除去した状態でゼロ調整を行うように
したので，測定若しくはゼロ調中に薬液を用いる必要が
なく，従って従来の様にサンプル液と薬液を精度高く混
合する必要もないのでサンプル液と薬液を送出するポン
プが不要となりコストを安くすることができる。As described above, according to the present invention, bubbling is performed by sending air to the sample liquid in the sample liquid tank, and zero adjustment is performed with only ozone removed. There is no need to use a chemical solution during zero adjustment, and thus there is no need to mix the sample solution and the chemical solution with high accuracy as in the prior art. Therefore, a pump for sending out the sample solution and the chemical solution is not required, and the cost can be reduced.
【図１】本発明の溶存オゾン測定装置の一実施例を示す
要部構成図である。FIG. 1 is a main part configuration diagram showing one embodiment of a dissolved ozone measuring device of the present invention.
【図２】従来の溶存オゾン測定装置を示す要部構成図で
ある。FIG. 2 is a main part configuration diagram showing a conventional dissolved ozone measuring device.
１ 測定槽 ２ 回転電極 ３ 対極 ４ サンプル液槽 １０ 空気吹出し口 １３ 空気圧送ポンプ １４ 空気流量調節弁 １５ 電磁弁 １６ 流量調節弁 ２０ シーケンサ DESCRIPTION OF SYMBOLS 1 Measurement tank 2 Rotating electrode 3 Counter electrode 4 Sample liquid tank 10 Air outlet 13 Air pump 14 Air flow control valve 15 Solenoid valve 16 Flow control valve 20 Sequencer
フロントページの続き (56)参考文献 特開 昭58−77650（ＪＰ，Ａ) 特開 昭61−151461（ＪＰ，Ａ) 特開 平５−113425（ＪＰ，Ａ) 特開 平６−2216（ＪＰ，Ａ) 特開 平６−118051（ＪＰ，Ａ) 実開 平５−40872（ＪＰ，Ｕ) 実開 平５−62854（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 27/416 G01N 27/30 361 G01N 27/48 311 Continuation of front page (56) References JP-A-58-77650 (JP, A) JP-A-61-151461 (JP, A) JP-A-5-113425 (JP, A) JP-A-6-2216 (JP) JP-A-6-118051 (JP, A) JP-A-5-40872 (JP, U) JP-A-5-62854 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB G01N 27/416 G01N 27/30 361 G01N 27/48 311
Claims (1)
導入するサンプル液槽と，該サンプル液槽の底部から空
気を吹き込んで前記サンプル水をバブリングして前記オ
ゾンを除去する空気圧送手段と，前記容器のサンプル水
を導入する溶存オゾン測定装置からなり，該溶存オゾン
測定装置は前記バブリングによりオゾンが除去されたサ
ンプル水を用いてゼロ調を行うことを特徴とするポーラ
ログラフ式溶存オゾン測定装置。1. A sample liquid tank for introducing sample water containing ozone and chlorine, and air pressure feeding means for blowing air from the bottom of the sample liquid tank to bubble the sample water to remove the ozone; A polarographic dissolved ozone measuring apparatus, comprising: a dissolved ozone measuring apparatus for introducing sample water in the container, wherein the dissolved ozone measuring apparatus performs zero adjustment using the sample water from which ozone has been removed by the bubbling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05027976A JP3136581B2 (en) | 1993-02-17 | 1993-02-17 | Polarographic dissolved ozone measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05027976A JP3136581B2 (en) | 1993-02-17 | 1993-02-17 | Polarographic dissolved ozone measurement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06242070A JPH06242070A (en) | 1994-09-02 |
| JP3136581B2 true JP3136581B2 (en) | 2001-02-19 |
Family
ID=12235902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05027976A Expired - Fee Related JP3136581B2 (en) | 1993-02-17 | 1993-02-17 | Polarographic dissolved ozone measurement system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3136581B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215108A (en) * | 1988-02-23 | 1989-08-29 | Nippon Dempa Kogyo Co Ltd | Piezoelectric vibrator |
| JPH01227515A (en) * | 1988-03-07 | 1989-09-11 | Nippon Dempa Kogyo Co Ltd | Piezoelectric oscillator |
| JPH01143516U (en) * | 1988-03-24 | 1989-10-02 | ||
| JPH0525822U (en) * | 1991-09-13 | 1993-04-02 | ミヨタ株式会社 | Quartz crystal support structure |
-
1993
- 1993-02-17 JP JP05027976A patent/JP3136581B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06242070A (en) | 1994-09-02 |
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