JPH07333153A - Measuring method for peroxodisulfuric acid in waste water - Google Patents
Measuring method for peroxodisulfuric acid in waste waterInfo
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- JPH07333153A JPH07333153A JP12624894A JP12624894A JPH07333153A JP H07333153 A JPH07333153 A JP H07333153A JP 12624894 A JP12624894 A JP 12624894A JP 12624894 A JP12624894 A JP 12624894A JP H07333153 A JPH07333153 A JP H07333153A
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- peroxodisulfuric acid
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は排水中のペルオキソ二硫
酸の測定方法に係り、特に、排水中に含有される低濃度
ペルオキソ二硫酸を短時間で容易かつ高精度に測定する
ことができる方法であって、排煙脱硫排水のＣＯＤ吸着
処理工程において、排水中に含まれる樹脂の劣化原因物
質であるペルオキソ二硫酸濃度の分析、管理に好適な排
水中のペルオキソ二硫酸の測定方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring peroxodisulfate in wastewater, and more particularly to a method capable of easily and highly accurately measuring low-concentration peroxodisulfate contained in wastewater. In addition, the present invention relates to a method for measuring peroxodisulfuric acid in wastewater suitable for analysis and management of the concentration of peroxodisulfuric acid, which is a substance causing deterioration of the resin contained in the wastewater, in the COD adsorption treatment step of flue gas desulfurization wastewater.
【０００２】[0002]
【従来の技術及び先行技術】火力発電所等において石炭
・石油を燃焼した際に発生する排ガスの脱硫装置から排
出する排水、いわゆる排煙脱硫排水はフッ素、重金属
類、ＣＯＤ成分を含有するため、これらを除去する必要
がある。2. Description of the Related Art Wastewater discharged from a desulfurization device of exhaust gas generated when coal and oil are burned in a thermal power plant, so-called flue gas desulfurization wastewater contains fluorine, heavy metals, and COD components, These need to be removed.
【０００３】従来、このような排煙脱硫排水の処理方法
としては、まず、重金属類、フッ素を処理するためにカ
ルシウム塩を添加して酸性排水を中和し、沈殿分離した
後、ｐＨ調整してＣＯＤ成分を吸着除去する方法が採用
されている。しかして、ＣＯＤ成分の除去に当っては、
弱塩基性又は中塩基性アニオン交換樹脂の吸着樹脂に、
重金属類及びフッ素を除去した後の排水を接触させてＣ
ＯＤ成分（主成分：ジチオン酸類（Ｓ2 Ｏ6 ））を選択
的に吸着分離している。Conventionally, as a method for treating such flue gas desulfurization effluent, first, calcium salt is added to treat heavy metals and fluorine to neutralize the acidic effluent, precipitate and separate, and then adjust pH. A method of adsorbing and removing the COD component is adopted. Then, when removing the COD component,
For weakly or moderately basic anion exchange resin adsorption resin,
Contact the wastewater after removing heavy metals and fluorine to remove C
The OD component (main component: dithionic acids (S 2 O 6 )) is selectively adsorbed and separated.
【０００４】このＣＯＤ成分の吸着分離に当り、排水中
に酸化性物質、例えばペルオキソ二硫酸が含有されてい
ると、吸着樹脂が酸化されて劣化する。When the COD component is adsorbed and separated, if the effluent contains an oxidizing substance such as peroxodisulfuric acid, the adsorbent resin is oxidized and deteriorates.
【０００５】そこで、この吸着樹脂の酸化劣化を防止す
るために、排水中のペルオキソ二硫酸を除去した後、Ｃ
ＯＤの吸着除去を行う方法が提案されている（特願平５
−２２３１２７号，同５−２７８４４１号）が、吸着樹
脂の酸化劣化をより一層確実に防止するためには、ペル
オキソ二硫酸除去後の水のペルオキソ二硫酸濃度を分
析、管理することが必要となる。Therefore, in order to prevent the oxidative deterioration of the adsorption resin, the peroxodisulfuric acid in the waste water is removed, and then C
A method for adsorbing and removing OD has been proposed (Japanese Patent Application No. 5).
No. 223127, No. 5-278441), it is necessary to analyze and manage the peroxodisulfuric acid concentration of water after removal of peroxodisulfuric acid in order to more reliably prevent the oxidative deterioration of the adsorption resin. .
【０００６】ところで、一般に、排水中の酸化性物質、
例えば残留塩素はＯ−トリジン比色法又はＤＰＤ（Ｎ，
Ｎ−ジエチル−ｐ−フェニレンジアミン硫酸塩）比色法
で定量的に測定可能であることはよく知られている。ま
た、これらのモニタリングには酸化還元電位（ＯＲＰ）
測定などが利用されている。By the way, in general, oxidizing substances in wastewater,
For example, residual chlorine can be detected by O-tolidine colorimetry or DPD (N,
N-diethyl-p-phenylenediamine sulfate) It is well known that it can be quantitatively measured by a colorimetric method. In addition, the redox potential (ORP) is used for these monitoring.
Measurements are used.
【０００７】一方、排水の酸化性物質がペルオキソ二硫
酸である場合には、従来、その定量分析は酸化還元滴定
法（第二鉄塩滴定法）（高木誠司「定量分析の実験と計
算第２巻」（共立出版社 昭和６０年，５月再訂版）
“容量分析法”ＰＰ３７８／４３１参照）或いはイオン
クロマト法が用いられるのが現状であり、Ｏ−トリジン
比色法及びＤＰＤ比色法で測定できることは知られてい
なかった。On the other hand, when the oxidizing substance of the waste water is peroxodisulfuric acid, its quantitative analysis has conventionally been carried out by a redox titration method (ferric iron salt titration method) (Seiji Takagi, "Experiment and Calculation of Quantitative Analysis No. 2"). Volume "(Kyoritsu Publishing Co., 1985, May re-edited version)
At present, the "volumetric analysis method" PP378 / 431) or ion chromatography method is used, and it has not been known that measurement can be performed by the O-tolidine colorimetric method and the DPD colorimetric method.
【０００８】[0008]
【発明が解決しようとする課題】排水中のペルオキソ二
硫酸の定量においては、ＯＲＰ測定やＯ−トリジン比色
法のような簡単な方法で検出できることが望まれる。ま
た、特に、前述のＣＯＤ吸着樹脂の酸化劣化防止のため
の水質管理においては、迅速な分析法によって測定でき
ることが望まれる。In the determination of peroxodisulfuric acid in waste water, it is desired that it can be detected by a simple method such as ORP measurement or O-tolidine colorimetric method. Further, particularly in the water quality control for preventing the oxidative deterioration of the COD adsorption resin described above, it is desired that measurement can be performed by a rapid analysis method.
【０００９】しかしながら、従来、ペルオキソ二硫酸の
測定に用いられている酸化還元滴定法は容量分析法であ
るため、１０ｍｇ／ｌ以下の精度での分析は困難であ
り、ＣＯＤ吸着樹脂と接触させる低濃度ペルオキソ二硫
酸含有水中のペルオキソ二硫酸の定量には不適当であっ
た。However, since the redox titration method conventionally used for the measurement of peroxodisulfuric acid is a volumetric method, it is difficult to analyze it with an accuracy of 10 mg / l or less, and it is difficult to contact it with a COD-adsorbing resin. It was not suitable for the determination of peroxodisulfate in water containing concentrated peroxodisulfate.
【００１０】また、イオンクロマト法は分析操作が複雑
で、測定に長時間を要す上に、低濃度成分の測定では精
度が悪いという欠点がある。Further, the ion chromatographic method has a drawback that the analytical operation is complicated, the measurement takes a long time, and the measurement of low concentration components is inaccurate.
【００１１】このように、従来の測定方法では、いずれ
も分析操作に長時間を要す、操作が複雑である、分析精
度が悪いなどの問題があった。As described above, all of the conventional measuring methods have problems that the analysis operation requires a long time, the operation is complicated, and the analysis accuracy is poor.
【００１２】本発明は上記従来の問題点を解決し、排水
中のペルオキソ二硫酸を短時間で容易かつ高精度に測定
することができる排水中のペルオキソ二硫酸の測定方法
を提供することを目的とする。An object of the present invention is to solve the above-mentioned conventional problems and to provide a method for measuring peroxodisulfuric acid in wastewater which can be easily and highly accurately measured in a short time in a short time. And
【００１３】[0013]
【課題を解決するための手段】本発明の排水中のペルオ
キソ二硫酸の測定方法は、排水中のペルオキソ二硫酸濃
度を測定する方法において、該排水中にＮ，Ｎ−ジエチ
ル−ｐ−フェニレンジアミン硫酸塩とヨウ化カリウムと
を添加して反応させ、反応液の発色度合を比色法により
測定することを特徴とする。The method for measuring peroxodisulfate in wastewater according to the present invention is a method for measuring the concentration of peroxodisulfate in wastewater, wherein N, N-diethyl-p-phenylenediamine is contained in the wastewater. The method is characterized in that a sulfate and potassium iodide are added and reacted, and the degree of color development of the reaction solution is measured by a colorimetric method.
【００１４】即ち、本発明者らは、ペルオキソ二硫酸の
測定方法について検討を行ったところ、ペルオキソ二硫
酸は、Ｎ，Ｎ−ジエチル−ｐ−フェニレンジアミン硫酸
塩（以下「ＤＰＤ」と称す。）試薬を添加して一定時間
反応させると発色し、その発色量はペルオキソ二硫酸濃
度と相関性があること、従って、ランバート・ベールの
法則が適用でき、比色定量できることを見出し、本発明
を完成させた。That is, the present inventors have studied the method for measuring peroxodisulfuric acid, and found that peroxodisulfuric acid is N, N-diethyl-p-phenylenediamine sulfate (hereinafter referred to as "DPD"). The present invention was completed by discovering that color is developed when a reagent is added and reacted for a certain period of time, and that the amount of color development is correlated with the concentration of peroxodisulfate, and therefore Lambert-Beer's law can be applied and colorimetric determination can be performed. Let
【００１５】なお、本発明における測定対象であるペル
オキソ二硫酸は、過硫酸とも呼称されているが、具体的
にはペルオキソ二硫酸イオン（Ｓ2 Ｏ8 2- ）として分
析、測定される。The peroxodisulfate to be measured in the present invention is also called persulfate, but it is specifically analyzed and measured as peroxodisulfate ion (S 2 O 8 2− ).
【００１６】以下に本発明を詳細に説明する。The present invention will be described in detail below.
【００１７】本発明の方法においては、検水であるペル
オキソ二硫酸を含有する排水、例えば、排煙脱硫排水、
或いは、排煙脱硫排水のＣＯＤ吸着工程におけるＣＯＤ
吸着樹脂塔入口水の一定量を反応容器に採り、これにｐ
Ｈ調整のためのリン酸塩緩衝液、ＤＰＤ及びヨウ化カリ
ウムの一定量を添加して撹拌し、２０〜３０分間反応さ
せる。In the method of the present invention, wastewater containing peroxodisulfuric acid as a test water, for example, flue gas desulfurization wastewater,
Alternatively, COD in the COD adsorption process of flue gas desulfurization wastewater
Take a certain amount of water at the inlet of the adsorption resin tower into a reaction vessel and add p
A certain amount of phosphate buffer for adjusting H, DPD and potassium iodide are added, stirred and reacted for 20 to 30 minutes.
【００１８】ここで、検水の採取量は、１０〜５０ｍ
ｌ、特に１０〜２０ｍｌの少量で良い。Here, the sampling amount of the test water is 10 to 50 m.
1, especially a small amount of 10 to 20 ml is sufficient.
【００１９】また、リン酸塩緩衝液としては、ｐＨ６．
０〜７．０、好ましくはｐＨ６．５のものを０．５〜
２．０ｍｌ添加する。The phosphate buffer solution has a pH of 6.
0 to 7.0, preferably 0.5 to 0.5
Add 2.0 ml.
【００２０】ＤＰＤとしては、市販のＤＰＤ希釈粉末を
用いることができ、ＤＰＤ希釈粉末の添加量は０．１〜
０．５ｇ程度が好ましい。また、ヨウ化カリウムの添加
量は０．１〜０．５ｇとするのが好ましい。As the DPD, a commercially available DPD diluted powder can be used, and the addition amount of the DPD diluted powder is 0.1 to 10.
About 0.5 g is preferable. The addition amount of potassium iodide is preferably 0.1 to 0.5 g.
【００２１】このように検水にリン酸塩緩衝液とＤＰＤ
粉末とヨウ化カリウムとを添加すると、２０〜３０分後
に、反応液は安定した赤色を呈する。この発色の度合
は、検水中のペルオキソ二硫酸濃度に比例するため、こ
の反応液を比色することにより、容易にペルオキソ二硫
酸濃度を求めることができる。[0021] As described above, the phosphate buffer and DPD are added to the test water.
When powder and potassium iodide are added, the reaction liquid exhibits a stable red color after 20 to 30 minutes. Since the degree of color development is proportional to the concentration of peroxodisulfate in the test water, the concentration of peroxodisulfate can be easily determined by comparing the color of this reaction solution.
【００２２】[0022]
【作用】本発明者らの研究により、ペルオキソ二硫酸を
含む排水にＤＰＤ試薬を添加すると２０〜３０分経過
後、ペルオキソ二硫酸濃度に応じた一定の発色量で安定
した赤色を示すことが判明した。According to the research conducted by the present inventors, it was found that, when the DPD reagent was added to the wastewater containing peroxodisulfuric acid, a stable red color was exhibited after a lapse of 20 to 30 minutes with a constant amount of color development according to the concentration of peroxodisulfuric acid. did.
【００２３】即ち、ＤＰＤフェニレンジアミンは、ペル
オキソ二硫酸によって下記反応式に従って酸化され赤色
を呈すが、この赤色の発色量は、図２に示すペルオキソ
二硫酸の検量線からも明らかなように、ペルオキソ二硫
酸濃度に比例する。That is, DPD phenylenediamine is oxidized by peroxodisulfuric acid according to the following reaction formula to give a red color, and the amount of color development of this red color is as shown in the calibration curve of peroxodisulfuric acid shown in FIG. Proportional to disulfate concentration.
【００２４】[0024]
【化１】 [Chemical 1]
【００２５】[0025]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明する。EXAMPLES The present invention will be described in more detail with reference to the following examples.
【００２６】実施例１ ＤＰＤ比色法（ＪＩＳ−０１０１ ２８．２、（１）に
準ずる）によりペルオキソ二硫酸の検量線を作製した。
用いた試薬等、並びに操作法は次の通りである。Example 1 A calibration curve of peroxodisulfuric acid was prepared by the DPD colorimetric method (according to JIS-0101 28.2, (1)).
The reagents and the like used and the operating method are as follows.
【００２７】試薬：リン酸塩緩衝液、ＤＰＤ希釈粉末、
ヨウ化カリウム 器具：５０ｍｌ比色管及び比色管立 計器：分光光度計 操作法： リン酸塩緩衝液（ｐＨ＝６．５）０．５ｍｌを２本
の比色管にそれぞれ入れ、これにＤＰＤ希釈粉末約０．
５ｇを加える。１本の比色管には検水の適量（１０ｍ
ｌ）を加え、栓をして振り混ぜる。別の比色管には同様
に純水１０ｍｌを加え、栓をして振り混ぜこれを対象液
用とする。Reagent: Phosphate buffer, DPD diluted powder,
Potassium iodide Instrument: 50 ml colorimetric tube and colorimetric tube instrument: Spectrophotometer Operation method: 0.5 ml of phosphate buffer solution (pH = 6.5) was put into each of the two colorimetric tubes, and put into it. DPD diluted powder approx.
Add 5 g. An appropriate amount of test water (10 m
l) is added, stoppered and shaken. Similarly, 10 ml of pure water is added to another colorimetric tube, which is capped and shaken for use as a target liquid.
【００２８】 検水、及び対象液の栓をとり、ヨウ化
カリウム約０．５ｇを加え、手早く栓をして振り混ぜ
る。Remove the test water and the stopper of the target liquid, add about 0.5 g of potassium iodide, quickly stopper and shake.
【００２９】 あらかじめ準備してある分光光度計を
用い、直ちに２つのセル（幅１０ｍｍ）にそれぞれの液
を移す。波長５３０ｎｍにて対象液のセルをゼロ調整し
た後、発色した検水のセルについて５分経過毎に吸光度
を記録する。吸光度が０．９以上に達するときは検水を
希釈調整して再操作する。Using a spectrophotometer prepared in advance, each solution is immediately transferred to two cells (width 10 mm). After zero-adjusting the cell of the target liquid at a wavelength of 530 nm, the absorbance is recorded every 5 minutes with respect to the cell of the color-developed test water. When the absorbance reaches 0.9 or more, dilute the test water and re-operate.
【００３０】 吸光度は発色３０分後の吸光度で測定
し記録する。The absorbance is measured and recorded as the absorbance after 30 minutes of color development.
【００３１】その結果、図２に示す検量線が得られ、ペ
ルオキソ二硫酸濃度と発色量が比例し、ペルオキソ二硫
酸のＤＰＤによる比色分析が可能であることが確認され
た。As a result, the calibration curve shown in FIG. 2 was obtained, and it was confirmed that the concentration of peroxodisulfate was proportional to the amount of color development, and that colorimetric analysis of peroxodisulfate by DPD was possible.
【００３２】実施例２ 図１に示す測定装置により排水中のペルオキソ二硫酸の
自動分析を上記実施例１のＤＰＤ比色法に準じて行っ
た。Example 2 Peroxodisulfate in waste water was automatically analyzed by the measuring apparatus shown in FIG. 1 according to the DPD colorimetric method of Example 1 above.
【００３３】図１中、１は検水定量サンプラー、２は試
薬注入ポンプ、３は反応試薬貯留槽、４はマグネチック
スターラー４Ａを備える反応容器、５はデジタル比色
計、６は流通式セル、Ｖ1 ，Ｖ2 ，Ｖ3 は電磁弁であ
り、１１〜１７の各符号は配管を示す。In FIG. 1, 1 is a sample detection quantitative sampler, 2 is a reagent injection pump, 3 is a reaction reagent storage tank, 4 is a reaction vessel equipped with a magnetic stirrer 4A, 5 is a digital colorimeter, and 6 is a flow cell. , V 1 , V 2 , and V 3 are solenoid valves, and each reference numeral 11 to 17 indicates piping.
【００３４】測定方法は次の通りである。The measuring method is as follows.
【００３５】まず、電磁弁Ｖ1 を開として、排水循環ラ
イン１１，１２に組み込まれた排水の一定量を検水とし
て取り出し、配管１３より反応容器４に投入する（な
お、この一定量とは１０〜５０ｍｌが好ましい。本実施
例では１０ｍｌ又は２０ｍｌとした。）。First, the solenoid valve V 1 is opened, and a fixed amount of waste water incorporated in the waste water circulation lines 11 and 12 is taken out as test water and introduced into the reaction container 4 through the pipe 13 (this constant amount is referred to as a fixed amount). 10 to 50 ml is preferable, and 10 ml or 20 ml was used in this example).
【００３６】次に、電磁弁Ｖ2 を開として、反応試薬貯
留槽３内の反応試薬の一定量を試薬注入ポンプ２によ
り、配管１４，１５を経て反応容器４に投入し、マグネ
チックスターラー４Ａで撹拌する。Next, the solenoid valve V 2 is opened, and a fixed amount of the reaction reagent in the reaction reagent storage tank 3 is charged into the reaction container 4 by the reagent injection pump 2 through the pipes 14 and 15, and the magnetic stirrer 4A is used. Stir at.
【００３７】本実施例において、この一定量とは、リン
酸塩緩衝液０．５ｍｌ及びＤＰＤ希釈粉末０．５ｇ、ヨ
ウ化カリウム０．５ｇである。なお、図１においては反
応試薬貯留槽及び試薬注入ポンプ等の試薬注入設備が１
組のみ示されているがこれらは各試薬毎に設けられてい
る。また、反応容器４のマグネチックスターラー４Ａの
撹拌は例えば５０ｒｐｍで常時作動するものであっても
良く、また、検水が投入されると同時に、電気計装で連
動するものであっても良い。In this embodiment, the constant amount is 0.5 ml of phosphate buffer solution, 0.5 g of DPD diluted powder, and 0.5 g of potassium iodide. In addition, in FIG. 1, a reagent injection facility such as a reaction reagent storage tank and a reagent injection pump is
Although only a set is shown, these are provided for each reagent. Further, the stirring of the magnetic stirrer 4A of the reaction container 4 may be constantly operated at, for example, 50 rpm, or may be linked with electric instrumentation at the same time when the test water is added.
【００３８】反応容器４内で１５〜３０分の範囲で一定
時間反応させた後は、電磁弁Ｖ3 が開き、反応容器４内
の発色した反応液をデジタル式比色計５の流通式セル６
に流入させて比色する。After reacting in the reaction container 4 for a certain period of time within a range of 15 to 30 minutes, the electromagnetic valve V 3 is opened, and the colored reaction liquid in the reaction container 4 is passed through the flow cell of the digital colorimeter 5. 6
Flow into and compare colors.
【００３９】上記方法により、下記排水を検水としてペ
ルオキソ二硫酸濃度を求め、結果を表１に示した。By the above-mentioned method, the concentration of peroxodisulfate was determined using the following wastewater as test water, and the results are shown in Table 1.
【００４０】Ｉ：Ａ火力発電所の排煙脱硫排水（ＣＯＤ
吸着塔の入口水） II：Ｂ火力発電所の排煙脱硫排水（シックナーオーバー
フロー水） なお、Ｂ火力発電所の排煙脱硫排水はＳＳを含むため、
排水循環ラインの配管１１に濾過手段を取り付けてＮ
ｏ．５Ｃ濾紙で濾過し、濾過水を検水定量サンプラー１
に受けた。I: A flue gas desulfurization wastewater (COD) of a thermal power plant
Adsorption tower inlet water) II: Flue gas desulfurization wastewater of B thermal power plant (thickener overflow water) Since flue gas desulfurization wastewater of B thermal power plant contains SS,
By attaching a filtering means to the pipe 11 of the drainage circulation line, N
o. After filtering with 5C filter paper, the filtered water is used as a sample water quantitative sampler 1
Received by
【００４１】また、上記排水Ｉ，IIについて、従来の第
二鉄塩滴定法によりペルオキソ二硫酸濃度の測定を行
い、結果を表１に併記した。The concentrations of peroxodisulfuric acid in the above wastewater I and II were measured by the conventional ferric salt titration method, and the results are also shown in Table 1.
【００４２】[0042]
【表１】 [Table 1]
【００４３】本実施例によるＤＰＤ比色法及び従来の第
二鉄塩滴定法について、検水量、試薬量、測定の難易度
を調べ、結果を表２に示した。With respect to the DPD colorimetric method according to this example and the conventional ferric salt titration method, the amount of test water, the amount of reagent and the difficulty of measurement were examined, and the results are shown in Table 2.
【００４４】[0044]
【表２】 [Table 2]
【００４５】表１，２より、本発明の方法によれば、排
水中のペルオキソ二硫酸濃度を低濃度であっても、短時
間で容易かつ高精度に測定することができることが明ら
かである。From Tables 1 and 2, it is clear that according to the method of the present invention, even if the concentration of peroxodisulfate in the waste water is low, it can be easily and accurately measured in a short time.
【００４６】[0046]
【発明の効果】以上詳述した通り、本発明の排水中のペ
ルオキソ二硫酸の測定方法によれば、排水中のペルオキ
ソ二硫酸濃度をＤＰＤ比色法により短時間で容易に、し
かも低濃度ペルオキソ二硫酸であっても精度良く測定す
ることができる。As described in detail above, according to the method for measuring peroxodisulfate in wastewater of the present invention, the concentration of peroxodisulfate in wastewater can be easily measured in a short time by the DPD colorimetric method, and low concentration of peroxodisulfate can be obtained. Even with disulfuric acid, it can be measured accurately.
【００４７】本発明の排水中のペルオキソ二硫酸の測定
方法は、排煙脱硫排水のＣＯＤ吸着除去工程における吸
着樹脂塔入口水の水質管理等に有用であり、ＣＯＤ吸着
樹脂の酸化劣化原因物質である排水中の低濃度ペルオキ
ソ二硫酸の分析を短時間で容易かつ精度良く行って、Ｃ
ＯＤ吸着樹脂の劣化を確実に防止することができる。INDUSTRIAL APPLICABILITY The method for measuring peroxodisulfuric acid in wastewater according to the present invention is useful for the water quality control of the adsorbent resin tower inlet water in the COD adsorption removal step of flue gas desulfurization wastewater, and is a causative agent of oxidative deterioration of COD adsorbent resin. The analysis of low-concentration peroxodisulfuric acid in a certain wastewater can be performed easily and accurately in a short time, and C
It is possible to reliably prevent the deterioration of the OD adsorption resin.
【００４８】[0048]
【図１】実施例で用いた測定装置を示す系統図である。FIG. 1 is a system diagram showing a measuring device used in an example.
【図２】ペルオキソ二硫酸の検量線を示すグラフであ
る。FIG. 2 is a graph showing a calibration curve of peroxodisulfate.
１ 検水定量サンプラー ２ 試薬注入ポンプ ３ 反応試薬貯留槽 ４ 反応容器 ５ デジタル比色計 ６ 流通式セル 1 Water-quantification quantitative sampler 2 Reagent injection pump 3 Reaction reagent storage tank 4 Reaction vessel 5 Digital colorimeter 6 Flow-through cell
Claims (1)
る方法において、該排水中にＮ，Ｎ−ジエチル−ｐ−フ
ェニレンジアミン硫酸塩とヨウ化カリウムとを添加して
反応させ、反応液の発色度合を比色法により測定するこ
とを特徴とする排水中のペルオキソ二硫酸の測定方法。1. A method for measuring the concentration of peroxodisulfate in wastewater, wherein N, N-diethyl-p-phenylenediamine sulfate and potassium iodide are added to the wastewater to cause reaction, and the reaction solution is colored. A method for measuring peroxodisulfate in wastewater, characterized in that the degree is measured by a colorimetric method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12624894A JP3172745B2 (en) | 1994-06-08 | 1994-06-08 | Method for measuring peroxodisulfuric acid in wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12624894A JP3172745B2 (en) | 1994-06-08 | 1994-06-08 | Method for measuring peroxodisulfuric acid in wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07333153A true JPH07333153A (en) | 1995-12-22 |
| JP3172745B2 JP3172745B2 (en) | 2001-06-04 |
Family
ID=14930476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12624894A Expired - Fee Related JP3172745B2 (en) | 1994-06-08 | 1994-06-08 | Method for measuring peroxodisulfuric acid in wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3172745B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271472A (en) * | 2003-03-12 | 2004-09-30 | Suido Kiko Kaisha Ltd | Portable water examination device |
| JP2009302293A (en) * | 2008-06-13 | 2009-12-24 | Apprecia Technology Inc | Chemical solution supplying method and chemical solution supplying device |
| JP2012189320A (en) * | 2011-02-23 | 2012-10-04 | Kurita Water Ind Ltd | Method of measuring persulfuric acid concentration, persulfuric acid concentration measuring apparatus and persulfuric acid supplying device |
| CN109060786A (en) * | 2018-08-25 | 2018-12-21 | 成都凯天电子股份有限公司 | Measure the detection method of industrial wastewater sulfuric acid concentration content |
-
1994
- 1994-06-08 JP JP12624894A patent/JP3172745B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271472A (en) * | 2003-03-12 | 2004-09-30 | Suido Kiko Kaisha Ltd | Portable water examination device |
| JP2009302293A (en) * | 2008-06-13 | 2009-12-24 | Apprecia Technology Inc | Chemical solution supplying method and chemical solution supplying device |
| JP2012189320A (en) * | 2011-02-23 | 2012-10-04 | Kurita Water Ind Ltd | Method of measuring persulfuric acid concentration, persulfuric acid concentration measuring apparatus and persulfuric acid supplying device |
| CN109060786A (en) * | 2018-08-25 | 2018-12-21 | 成都凯天电子股份有限公司 | Measure the detection method of industrial wastewater sulfuric acid concentration content |
| CN109060786B (en) * | 2018-08-25 | 2023-12-05 | 成都凯天电子股份有限公司 | Detection method for measuring sulfuric acid concentration content of industrial wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3172745B2 (en) | 2001-06-04 |
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