JP7089919B2 - Component concentration measuring method and measuring device, as well as water treatment method and water treatment device - Google Patents

Component concentration measuring method and measuring device, as well as water treatment method and water treatment device Download PDF

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JP7089919B2
JP7089919B2 JP2018065094A JP2018065094A JP7089919B2 JP 7089919 B2 JP7089919 B2 JP 7089919B2 JP 2018065094 A JP2018065094 A JP 2018065094A JP 2018065094 A JP2018065094 A JP 2018065094A JP 7089919 B2 JP7089919 B2 JP 7089919B2
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佳介 瀧口
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Description

本発明は、色の異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定する成分濃度の測定方法および測定装置に関する。また、本発明は、その成分濃度の測定方法または測定装置を用いた水処理方法および水処理装置に関する。 The present invention relates to a component concentration measuring method and a measuring device for measuring the concentration of at least one component in a liquid containing two or more components having different colors. The present invention also relates to a method for measuring the component concentration thereof, a water treatment method using the measuring device, and a water treatment device.

液体中の懸濁物質の濃度を測定する方法としては、赤外線等を用いる散乱光測定方式、透過光方式等が知られている(非特許文献1参照)。 As a method for measuring the concentration of suspended solids in a liquid, a scattered light measuring method using infrared rays and the like, a transmitted light method and the like are known (see Non-Patent Document 1).

これらの従来の測定方法では、測定対象全体の懸濁物質の濃度は測定することができるが、2成分以上の懸濁物質が含まれている場合に、それぞれの懸濁物質の濃度を測定することができない。 With these conventional measuring methods, the concentration of suspended solids in the entire measurement target can be measured, but when two or more components of suspended solids are contained, the concentration of each suspended solid is measured. Can't.

例えば、スラッジブランケット型凝集沈殿装置を用いる凝集沈殿処理において、被処理水に含まれる有機物や臭気成分等を吸着するために被処理水に粉末活性炭を添加する場合、凝集沈殿装置のスラッジブランケットゾーンにはフロックと粉末活性炭とが滞留する。粉末活性炭が不足すると被処理水中の有機物等の吸着が不十分となり、処理水中に残存してしまうため、スラッジブランケットゾーン内の粉末活性炭の濃度を管理することが望ましい。蛍光X線分析等によって、粉末活性炭の比率を測定することも可能であるが、非常に手間がかかり、簡便な方法が求められている。 For example, in the coagulation sedimentation treatment using a sludge blanket type coagulation sedimentation device, when powdered activated carbon is added to the water to be treated in order to adsorb organic substances, odorous components, etc. contained in the water to be treated, the sludge blanket zone of the coagulation sedimentation device is used. Flock and powdered activated carbon stay in the water. If the powdered activated carbon is insufficient, the adsorption of organic substances in the water to be treated becomes insufficient and remains in the treated water. Therefore, it is desirable to control the concentration of the powdered activated carbon in the sludge blanket zone. It is possible to measure the ratio of powdered activated carbon by fluorescent X-ray analysis or the like, but it is very time-consuming and a simple method is required.

http://www.aqua-ckc.jp/data/CP04-200-09-003%20Turbidity_WTW.pdfhttp://www.aqua-ckc.jp/data/CP04-200-09-003%20Turbidity_WTW.pdf

本発明の目的は、色の異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定することができる、成分濃度の測定方法および測定装置を提供することにある。 An object of the present invention is to provide a method and an apparatus for measuring a component concentration capable of measuring the concentration of at least one component in a liquid containing two or more components having different colors.

また、本発明の目的は、粉末活性炭を用いる凝集処理において、凝集液に含まれる粉末活性炭の濃度を管理することができる、水処理方法および水処理装置を提供することにある。 Another object of the present invention is to provide a water treatment method and a water treatment apparatus capable of controlling the concentration of the powdered activated carbon contained in the coagulated liquid in the coagulation treatment using the powdered activated carbon.

本発明は、色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定方法であって、全対象成分の濃度を測定する全対象成分濃度測定工程と、白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の前記測定対象成分の割合を算出する色識別工程と、を含み、前記全対象成分濃度測定工程により測定した全対象成分濃度と、前記色識別工程により算出した前記測定対象成分の割合との積から前記液体中の前記測定対象成分の濃度を算出する、成分濃度の測定方法である。 The present invention is a method for measuring a component concentration for measuring the concentration of at least one measurement target component in a liquid containing two or more target components having different colors, and the total target component concentration for measuring the concentration of all target components. In the measurement step, the color of the measurement target is discriminated based on the RGB ratio by irradiating the white LED light and receiving the reflected light, and the color of at least one of the target components is identified and among all the target components. The product of the total target component concentration measured by the total target component concentration measuring step and the ratio of the measurement target component calculated by the color identification step, including the color identification step of calculating the ratio of the measurement target component. It is a method of measuring a component concentration, which calculates the concentration of the component to be measured in the liquid from the above.

前記成分濃度の測定方法における前記色識別工程において、前記全対象成分中の対象成分のうちの少なくとも1つの成分について測定したRGB比と、全対象成分について測定したRGB比とに基づいて前記割合を算出することが好ましい。 In the color identification step in the method for measuring the component concentration, the ratio is determined based on the RGB ratio measured for at least one component of the target components in the total target components and the RGB ratio measured for all the target components. It is preferable to calculate.

本発明は、色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定装置であって、全対象成分の濃度を測定する全対象成分濃度測定手段と、白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の前記測定対象成分の割合を算出する色識別手段と、を備え、前記全対象成分濃度測定手段により測定した全対象成分濃度と、前記色識別手段により算出した前記測定対象成分の割合との積から前記液体中の前記測定対象成分の濃度を算出する、成分濃度の測定装置である。 The present invention is a component concentration measuring device that measures the concentration of at least one measurement target component in a liquid containing two or more target components having different colors, and measures the concentration of all target components. The measuring means and the white LED light are irradiated to receive the reflected light, the color of the measurement target is discriminated based on the RGB ratio, and the color of at least one of the target components is identified to identify all the target components. A color identification means for calculating the ratio of the measurement target component in the inside is provided, and the total target component concentration measured by the total target component concentration measuring means and the ratio of the measurement target component calculated by the color identification means are provided. It is a component concentration measuring device that calculates the concentration of the component to be measured in the liquid from the product.

前記成分濃度の測定装置における前記色識別手段は、前記全対象成分中の対象成分のうちの少なくとも1つの成分について測定したRGB比と、全対象成分について測定したRGB比とに基づいて前記割合を算出するものであることが好ましい。 The color identification means in the component concentration measuring device determines the ratio based on the RGB ratio measured for at least one component of the target components in the total target components and the RGB ratio measured for all the target components. It is preferable to calculate.

本発明は、被処理水と粉末活性炭とを混合する混合工程と、前記混合された混合液を凝集剤により凝集処理する凝集処理工程と、前記凝集処理された凝集液における全SS濃度を測定する全SS濃度測定工程と、白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記凝集液に含まれるSS成分のうちの少なくとも1つの色を識別して全SS成分中の前記粉末活性炭の割合を算出する色識別工程と、を含み、前記全SS濃度測定工程により測定した全SS濃度と、前記色識別工程により算出した前記粉末活性炭の割合との積から前記凝集液中の前記粉末活性炭の濃度を算出し、前記算出した前記粉末活性炭の濃度に基づいて、前記粉末活性炭の使用量を調整する、水処理方法である。 The present invention measures a mixing step of mixing water to be treated and powdered activated charcoal, a coagulation treatment step of coagulating the mixed liquid with a coagulant, and measuring the total SS concentration in the coagulated liquid. In the total SS concentration measurement step, the color of the measurement target is discriminated based on the RGB ratio by irradiating the white LED light and receiving the reflected light, and at least one color of the SS components contained in the coagulated liquid is discriminated. The total SS concentration measured by the total SS concentration measuring step and the ratio of the powdered activated charcoal calculated by the color identification step include a color identification step of calculating the ratio of the powdered activated charcoal in all SS components. This is a water treatment method in which the concentration of the powdered activated charcoal in the coagulated liquid is calculated from the product of the above, and the amount of the powdered activated charcoal used is adjusted based on the calculated concentration of the powdered activated charcoal.

本発明は、被処理水と粉末活性炭とを混合する混合手段と、前記混合された混合液を凝集剤により凝集処理する凝集処理手段と、前記凝集処理された凝集液における全SS濃度を測定する全SS濃度測定手段と、白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記凝集液に含まれるSS成分のうちの少なくとも1つの色を識別して全SS成分中の前記粉末活性炭の割合を算出する色識別手段と、を備え、前記全SS濃度測定手段により測定した全SS濃度と、前記色識別手段により算出した前記粉末活性炭の割合との積から前記凝集液中の前記粉末活性炭の濃度を算出し、前記算出した前記粉末活性炭の濃度に基づいて、前記粉末活性炭の使用量を調整する、水処理装置である。 The present invention measures the total SS concentration in the mixing means for mixing the water to be treated and the powdered activated charcoal, the coagulation treatment means for coagulating the mixed liquid with a coagulant, and the coagulation liquid. The total SS concentration measuring means and the white LED light are irradiated to receive the reflected light, the color to be measured is discriminated based on the RGB ratio, and at least one color of the SS components contained in the coagulated liquid is discriminated. A color identification means for calculating the ratio of the powdered activated charcoal in all SS components is provided, and the total SS concentration measured by the total SS concentration measuring means and the ratio of the powdered activated charcoal calculated by the color identification means are used. It is a water treatment apparatus that calculates the concentration of the powdered activated charcoal in the coagulated liquid from the product of the above, and adjusts the amount of the powdered activated charcoal used based on the calculated concentration of the powdered activated charcoal.

本発明では、色の異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定することができる、成分濃度の測定方法および測定装置を提供することができる。 INDUSTRIAL APPLICABILITY The present invention can provide a method for measuring a component concentration and a measuring device capable of measuring the concentration of at least one component in a liquid containing two or more components having different colors.

また、本発明では、粉末活性炭を用いる凝集処理において、凝集液に含まれる粉末活性炭の濃度を管理することができる、水処理方法および水処理装置を提供することができる。 Further, the present invention can provide a water treatment method and a water treatment apparatus capable of controlling the concentration of the powdered activated carbon contained in the coagulated liquid in the coagulation treatment using the powdered activated carbon.

本発明の実施形態に係る水処理装置の一例を示す概略構成図である。It is a schematic block diagram which shows an example of the water treatment apparatus which concerns on embodiment of this invention. 実施例1で作製した、茶色と黒色の混合比率を変えた粉末活性炭抑留ブランケットの画像の模擬サンプルを示す図である。It is a figure which shows the simulated sample of the image of the powder activated carbon detention blanket which changed the mixing ratio of brown and black produced in Example 1. FIG. 実施例1における、色識別センサの表示値と粉炭抑留比との関係を示すグラフである。It is a graph which shows the relationship between the display value of the color identification sensor, and the pulverized coal detention ratio in Example 1. FIG.

本発明の実施の形態について以下説明する。本実施形態は本発明を実施する一例であって、本発明は本実施形態に限定されるものではない。 Embodiments of the present invention will be described below. The present embodiment is an example of carrying out the present invention, and the present invention is not limited to the present embodiment.

本実施形態に係る成分濃度の測定方法は、色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定方法であって、全対象成分の濃度を測定する全対象成分濃度測定工程と、対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の測定対象成分の割合を算出する色識別工程と、を含み、全対象成分濃度測定工程により測定した全対象成分濃度と、色識別工程により算出した測定対象成分の割合との積から液体中の測定対象成分の濃度を算出する方法である。 The method for measuring the component concentration according to the present embodiment is a method for measuring the concentration of at least one measurement target component in a liquid containing two or more target components having different colors, and is a method for measuring the concentration of all the target components. All objects including a step of measuring the concentration of all target components for measuring the density and a color identification step of identifying the color of at least one component of the target components and calculating the ratio of the components to be measured in all the target components. This is a method of calculating the concentration of the measurement target component in a liquid from the product of the total target component concentration measured by the component concentration measuring step and the ratio of the measurement target component calculated by the color identification step.

本実施形態に係る成分濃度の測定装置は、色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定装置であって、全対象成分の濃度を測定する全対象成分濃度測定手段と、対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の測定対象成分の割合を算出する色識別手段と、を備え、全対象成分濃度測定手段により測定した全対象成分濃度と、色識別手段により算出した測定対象成分の割合との積から液体中の測定対象成分の濃度を算出する装置である。 The component concentration measuring device according to the present embodiment is a component concentration measuring device for measuring the concentration of at least one measurement target component in a liquid containing two or more target components having different colors, and is a component concentration measuring device for all the target components. All objects are provided with a means for measuring the concentration of all target components for measuring the density and a color identification means for identifying the color of at least one component of the target components and calculating the ratio of the components to be measured in all the target components. It is a device that calculates the concentration of the measurement target component in a liquid from the product of the total target component concentration measured by the component concentration measuring means and the ratio of the measurement target component calculated by the color discrimination means.

本実施形態に係る成分濃度の測定方法および測定装置により、色の異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定することができる。また、簡便に色の異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定することができる。 With the method for measuring the component concentration and the measuring device according to the present embodiment, it is possible to measure the concentration of at least one component in a liquid containing two or more components having different colors. In addition, the concentration of at least one component can be easily measured in a liquid containing two or more components having different colors.

例えば、色の異なる2つ以上の懸濁物質が含まれる液体に対し、SS濃度測定装置によって全SS濃度を測定し(全対象成分濃度測定工程)、色識別手段によって全SS成分中のSS成分のうちの少なくとも1つの成分の色を識別して全SS成分中の対象SS成分の割合を算出し(色識別工程)、(全SS濃度)×(対象SS成分の割合)により液体中の対象SS成分の濃度を算出することができる。 For example, for a liquid containing two or more suspended substances having different colors, the total SS concentration is measured by an SS concentration measuring device (total target component concentration measuring step), and the SS component in all SS components is measured by a color discrimination means. The color of at least one of the components is identified, the ratio of the target SS component in the total SS component is calculated (color identification step), and the target in the liquid is calculated by (total SS concentration) × (ratio of target SS component). The concentration of the SS component can be calculated.

具体的には、例えば、粉末活性炭と、粉末活性炭とは色の異なる懸濁物質が含まれる水に対し、SS濃度測定装置によって全SS濃度を測定し(全対象成分濃度測定工程)、色識別手段によって全SS成分中の粉末活性炭の色、または粉末活性炭とは色の異なる懸濁物質の色を識別して全SS成分中の対象SS成分である粉末活性炭の割合を算出し(色識別工程)、(全SS濃度)×(対象SS成分(粉末活性炭)の割合)により液体中の対象SS成分(粉末活性炭)の濃度を算出することができる。 Specifically, for example, for powdered activated charcoal and water containing a suspended substance having a color different from that of powdered activated charcoal, the total SS concentration is measured by an SS concentration measuring device (all target component concentration measuring steps), and color identification is performed. By means, the color of the powdered activated charcoal in all SS components or the color of the suspended substance having a different color from the powdered activated charcoal is identified, and the ratio of the powdered activated charcoal which is the target SS component in all SS components is calculated (color identification step). ), (Total SS concentration) × (ratio of target SS component (powder activated charcoal)), the concentration of the target SS component (powder activated charcoal) in the liquid can be calculated.

色の異なる対象成分が3つ以上含まれる場合には、例えば、対象成分のうちの2つの成分の色をそれぞれ識別して全対象成分中の測定対象成分の割合を算出すればよい。 When three or more target components having different colors are included, for example, the colors of the two components of the target components may be identified and the ratio of the measurement target component to all the target components may be calculated.

色識別手段は、例えば、前記全対象成分中の対象成分のうちの少なくとも1つの成分について測定したRGB比と、全対象成分について測定したRGB比とに基づいて割合を算出することができる装置である。例えば、色識別手段は、全SS成分中のSS成分のうちの少なくとも1つの成分について測定したRGB比と、全SS成分について測定したRGB比とに基づいて割合を算出することができる装置である。 The color discrimination means is, for example, an apparatus capable of calculating the ratio based on the RGB ratio measured for at least one component of the target components in the total target components and the RGB ratio measured for all the target components. be. For example, the color discrimination means is a device capable of calculating the ratio based on the RGB ratio measured for at least one of the SS components in all SS components and the RGB ratio measured for all SS components. ..

色識別手段の例としては、例えば、株式会社キーエンス製、ホワイトスポット光電センサ等が挙げられる。このホワイトスポット光電センサは、測定対象に対して白色LED等の光を照射して反射光を検知素子により受光し、測定対象の色をRGB比で判別するセンサであり、センサの表示値は、測定対象の色と登録した色(基準色)とのRGB比の一致度の意味合いがあり、測定対象の色と登録した色とが完全に一致すると999(単位なし)となる。 Examples of the color identification means include, for example, a white spot photoelectric sensor manufactured by KEYENCE CORPORATION. This white spot photoelectric sensor is a sensor that irradiates the measurement target with light such as a white LED, receives the reflected light by the detection element, and discriminates the color of the measurement target by the RGB ratio. There is a meaning of the degree of matching of the RGB ratio between the color to be measured and the registered color (reference color), and when the color to be measured and the registered color completely match, it becomes 999 (no unit).

本発明者らは、このセンサの表示値は測定範囲の平均値が表示されるため、例えば、粉末活性炭の黒色を登録色(基準色)とし、例えば粉末活性炭50%(黒色)、フロック50%(茶色)のような状態を判別することができないかと考え、検討し、本発明に至った。 Since the display value of this sensor is the average value of the measurement range, the present inventors use, for example, the black color of the powdered activated carbon as the registered color (reference color), for example, 50% (black) powdered activated carbon and 50% floc. We considered whether it would be possible to discriminate a state such as (brown), and studied it, and came up with the present invention.

ここで、RGB比は、CIE表色系のレッド(R)(赤:700nm)、グリーン(G)(緑、546.1nm)、ブルー(B)(青、435.8nm)とするRGB表色系におけるRGB比のことをいう。本明細書において「色の異なる」とは、このRGB表色系におけるRGB比が異なる色のことをいう。 Here, the RGB ratio is a CIE color system red (R) (red: 700 nm), green (G) (green, 546.1 nm), blue (B) (blue, 435.8 nm). Refers to the RGB ratio in the system. As used herein, the term "different colors" refers to colors having different RGB ratios in this RGB color system.

本実施形態では、色識別工程(色識別手段)における色の識別方法としてRBG比により行っているが、写真を撮影して特定色の面積比から算出してもよい。色識別手段は、写真撮影手段を備え、例えば、前記全対象成分中の対象成分のうちの少なくとも1つの成分について撮影した写真の特定色の面積と、全対象成分について撮影した写真の特定色の面積とに基づいて割合を算出することができる装置である。例えば、色識別手段は、写真撮影手段を備え、全SS成分中のSS成分のうちの少なくとも1つの成分について撮影した写真の特定色の面積と、全SS成分について撮影した写真の特定色の面積とに基づいて割合を算出することができる装置である。写真の特定色の面積は、例えば、画像解析ソフト(メディアサイバネティクス製、Image-Pro;http://www.mediacy.jp/products/products.html)を使用して求めることができる。 In the present embodiment, the RBG ratio is used as a color identification method in the color identification step (color identification means), but a photograph may be taken and calculated from the area ratio of a specific color. The color identification means includes a photography means, for example, the area of a specific color of a photograph taken for at least one component of the target components in the total target components, and a specific color of a photograph taken for all the target components. It is a device that can calculate the ratio based on the area. For example, the color identification means includes a photographing means, and the area of a specific color of a photograph taken for at least one of the SS components in all SS components and the area of a specific color of a photograph taken for all SS components. It is a device that can calculate the ratio based on. The area of a specific color in a photograph can be obtained by using, for example, image analysis software (Image-Pro manufactured by Media Cybernetics; http://www.mediacy.jp/products/products.html).

本実施形態に係る成分濃度の測定方法および測定装置を適用可能な水処理装置として、例えば、被処理水中に粉末活性炭を混合した後、凝集処理するシステムが挙げられる。この方法は、被処理水中に粉末活性炭を混合、撹拌し、被処理水中に含まれる有機物等を粉末活性炭に吸着した後、凝集剤を混合、撹拌し、粉末活性炭、懸濁物質等を凝集処理する方法である。 Examples of the water treatment device to which the component concentration measuring method and the measuring device according to the present embodiment can be applied include a system in which powdered activated carbon is mixed with water to be treated and then agglomerated. In this method, powdered activated carbon is mixed and stirred in the water to be treated, organic substances and the like contained in the water to be treated are adsorbed on the powdered activated carbon, and then a flocculant is mixed and stirred to coagulate the powdered activated carbon, suspended substances and the like. How to do it.

図1に、このような水処理装置の一例を示す。図1に示す水処理装置1は、被処理水と粉末活性炭とを混合させる混合手段として、混合槽10と、粉末活性炭と被処理水とが混合された混合液を凝集剤により凝集処理する凝集処理手段として、凝集槽12と、を備える。水処理装置1は、凝集処理された凝集液の固液分離処理を行う固液分離手段として、固液分離装置14とを備えてもよい。 FIG. 1 shows an example of such a water treatment apparatus. The water treatment device 1 shown in FIG. 1 is a coagulation method for coagulating a mixing tank 10 and a mixed liquid in which powdered activated carbon and water to be treated are coagulated with a coagulant as a mixing means for mixing the water to be treated and the powdered activated carbon. A coagulation tank 12 is provided as the treatment means. The water treatment device 1 may include a solid-liquid separation device 14 as a solid-liquid separation means for performing a solid-liquid separation treatment of the aggregated liquid that has been agglomerated.

水処理装置1において、混合槽10の被処理水入口には被処理水配管16が接続されている。混合槽10の混合液出口と凝集槽12の混合液入口とは、混合液配管18により接続されている。凝集槽12の凝集液出口と固液分離装置14の凝集液入口とは、凝集液配管20により接続されている。固液分離装置14の処理水出口には.処理水配管22が接続されている。混合槽10には、撹拌手段として、撹拌羽根等を有する撹拌装置24が設置され、粉末活性炭を添加する粉末活性炭添加手段として、粉末活性炭添加配管26が接続されている。凝集槽12には、撹拌手段として、撹拌羽根等を有する撹拌装置28が設置され、凝集剤を添加する凝集剤添加手段として、凝集剤添加配管30が接続されている。凝集槽12には、必要に応じて、pH調整剤を添加するpH調整剤添加手段として、pH調整剤添加配管32が接続されていてもよい。凝集液配管20には、凝集液中の全対象成分の濃度を測定する全対象成分濃度測定手段として、SS濃度測定装置34と、凝集液中の対象成分のうちの少なくとも1つの色を識別して全対象成分中の測定対象成分の割合を算出する色識別手段として、色識別センサ36とが設置されている。SS濃度測定装置34および色識別センサ36の設置位置は、凝集液について測定できる位置であればよく、凝集槽12でもよいし、固液分離装置14でもよい。 In the water treatment device 1, a water treatment pipe 16 is connected to the water inlet of the mixing tank 10. The mixing liquid outlet of the mixing tank 10 and the mixing liquid inlet of the coagulation tank 12 are connected by a mixing liquid pipe 18. The coagulation liquid outlet of the coagulation tank 12 and the coagulation liquid inlet of the solid-liquid separation device 14 are connected by a coagulation liquid pipe 20. At the treated water outlet of the solid-liquid separator 14. The treated water pipe 22 is connected. A stirring device 24 having a stirring blade or the like is installed in the mixing tank 10 as a stirring means, and a powdered activated carbon addition pipe 26 is connected as a powdered activated carbon addition means for adding powdered activated carbon. In the coagulation tank 12, a stirrer 28 having a stirring blade or the like is installed as a stirrer means, and a coagulant addition pipe 30 is connected as a coagulant addition means for adding a coagulant. A pH adjuster addition pipe 32 may be connected to the coagulation tank 12 as a pH adjuster addition means for adding the pH adjuster, if necessary. In the coagulation liquid pipe 20, as a means for measuring the concentration of all target components in the coagulation liquid, the SS concentration measuring device 34 and at least one color of the target components in the coagulation liquid are identified. A color identification sensor 36 is installed as a color identification means for calculating the ratio of the measurement target component to all the target components. The SS concentration measuring device 34 and the color identification sensor 36 may be installed at any position as long as they can measure the aggregated liquid, and may be the coagulation tank 12 or the solid-liquid separation device 14.

本実施形態に係る水処理方法および水処理装置1の動作について説明する。 The water treatment method and the operation of the water treatment apparatus 1 according to the present embodiment will be described.

有機物、懸濁物質等が含まれる被処理水は、被処理水配管16を通して混合槽10へ導入される。混合槽10において、粉末活性炭添加配管26を通して粉末活性炭が添加され(粉末活性炭添加工程)、被処理水と粉末活性炭とが撹拌装置24により撹拌、混合される(混合工程)。これにより、被処理水に含まれる有機物等が粉末活性炭に吸着される。 The water to be treated containing organic substances, suspended solids and the like is introduced into the mixing tank 10 through the water pipe 16 to be treated. In the mixing tank 10, powdered activated carbon is added through the powdered activated carbon addition pipe 26 (powdered activated carbon addition step), and the water to be treated and the powdered activated carbon are stirred and mixed by the stirring device 24 (mixing step). As a result, organic substances and the like contained in the water to be treated are adsorbed on the powdered activated carbon.

粉末活性炭と被処理水とが混合された混合液は、混合液配管18を通して凝集槽12へ導入される。凝集槽12において、凝集剤添加配管30を通して凝集剤が添加され(凝集剤添加工程)、混合液と凝集剤とが撹拌装置28により撹拌、混合され、粉末活性炭、懸濁物質等が凝集されてフロックが形成される(凝集処理工程)。凝集処理工程において、必要に応じて、pH調整剤がpH調整剤添加配管32を通して添加され、pH調整が行われてもよい(pH調整工程)。 The mixed liquid in which the powdered activated carbon and the water to be treated are mixed is introduced into the coagulation tank 12 through the mixed liquid pipe 18. In the coagulation tank 12, the coagulant is added through the coagulant addition pipe 30 (coagulant addition step), the mixed liquid and the coagulant are stirred and mixed by the stirring device 28, and the powdered activated carbon, the suspended substance and the like are aggregated. Flock is formed (aggregation treatment step). In the coagulation treatment step, if necessary, a pH adjuster may be added through the pH adjuster addition pipe 32 to adjust the pH (pH adjustment step).

凝集処理により形成されたフロックを含む凝集液は、凝集液配管20を通して固液分離装置14へ導入される。固液分離装置14において、固液分離が行われ、処理水と汚泥とに分離される(固液分離工程)。処理水は、処理水配管22を通して排出される。 The floc-containing coagulant formed by the coagulation treatment is introduced into the solid-liquid separation device 14 through the coagulation liquid pipe 20. In the solid-liquid separation device 14, solid-liquid separation is performed and separated into treated water and sludge (solid-liquid separation step). The treated water is discharged through the treated water pipe 22.

この凝集液には、通常、黒色の粉末活性炭と、茶色のフロックとが含まれる。例えば、凝集液配管20において、SS濃度測定装置34により、凝集液中の全SS濃度が測定され(全成分濃度測定工程)、色識別センサ36により、凝集液中の対象成分のうちの少なくとも1つの色が識別されて全対象成分中の測定対象成分である粉末活性炭の割合が算出される(色識別工程)。SS濃度測定装置34により測定された全SS濃度と、色識別センサ36により算出された全対象成分中の粉末活性炭の割合との積から、凝集液中の粉末活性炭の濃度が算出される(成分濃度算出工程)。 This agglomerate usually contains black powdered activated carbon and brown flocs. For example, in the coagulation liquid pipe 20, the total SS concentration in the coagulation liquid is measured by the SS concentration measuring device 34 (total component concentration measurement step), and at least one of the target components in the coagulation liquid is measured by the color identification sensor 36. One color is identified and the ratio of powdered activated charcoal, which is the measurement target component, to all the target components is calculated (color identification step). The concentration of powdered activated carbon in the coagulant is calculated from the product of the total SS concentration measured by the SS concentration measuring device 34 and the ratio of powdered activated carbon in all the target components calculated by the color identification sensor 36 (components). Concentration calculation process).

このようにして算出された粉末活性炭の濃度に基づいて、混合槽10において添加される粉末活性炭の量を制御することができる。例えば、凝集液中の粉末活性炭の濃度が所定量より不足していれば、混合槽10において添加される粉末活性炭の量が増加され、凝集液中の粉末活性炭の濃度が所定量より過剰であれば、混合槽10において添加される粉末活性炭の量が減少されればよい。したがって、粉末活性炭を用いる凝集処理において、凝集液に含まれる粉末活性炭の濃度を管理することができる。 Based on the concentration of the powdered activated carbon calculated in this way, the amount of the powdered activated carbon added in the mixing tank 10 can be controlled. For example, if the concentration of the powdered activated carbon in the coagulation liquid is less than the predetermined amount, the amount of the powdered activated carbon added in the mixing tank 10 is increased, and the concentration of the powdered activated carbon in the coagulation liquid is more than the predetermined amount. For example, the amount of powdered activated carbon added in the mixing tank 10 may be reduced. Therefore, in the coagulation treatment using the powdered activated carbon, the concentration of the powdered activated carbon contained in the coagulation liquid can be controlled.

被処理水は、特に限定されるものではないが、例えば、河川水、湖沼水、地下水、し尿、下水、工業廃水等が挙げられる。また、被処理水には、有機物、懸濁物質等が含まれ、その他、無機物、イオン等が含まれていてもよい。 The water to be treated is not particularly limited, and examples thereof include river water, lake water, groundwater, human waste, sewage, and industrial wastewater. Further, the water to be treated contains organic substances, suspended solids and the like, and may also contain inorganic substances, ions and the like.

粉末活性炭は、水処理用として一般的に用いられる粉末活性炭であれば、特に制限されるものではない。 The powdered activated carbon is not particularly limited as long as it is a powdered activated carbon generally used for water treatment.

粉末活性炭の添加量には、特に制限はない。処理対象の被処理水の有機物等の濃度によって変わるが、例えば0.1mg/L~50mg/Lの範囲である。 The amount of powdered activated carbon added is not particularly limited. It varies depending on the concentration of organic substances in the water to be treated, but is, for example, in the range of 0.1 mg / L to 50 mg / L.

凝集処理工程において用いられる凝集剤としては、無機凝集剤および高分子凝集剤のうちの少なくとも1つが用いられる。 As the flocculant used in the coagulation treatment step, at least one of an inorganic flocculant and a polymer flocculant is used.

無機凝集剤としては、例えば、塩化第二鉄、ポリ硫酸第二鉄等の鉄系無機凝集剤、硫酸アルミニウム、ポリ塩化アルミニウム(PAC)等のアルミニウム系無機凝集剤等が挙げられる。 Examples of the inorganic flocculant include iron-based inorganic flocculants such as ferric chloride and polyferric sulfate, and aluminum-based inorganic flocculants such as aluminum sulfate and polyaluminum chloride (PAC).

無機凝集剤の添加量には、特に制限はない。処理対象の被処理水の懸濁物質、有機物等の濃度によって変わるが、例えば1~1,000mg/Lの範囲である。 The amount of the inorganic flocculant added is not particularly limited. It varies depending on the concentration of suspended solids, organic substances, etc. in the water to be treated, but is, for example, in the range of 1 to 1,000 mg / L.

凝集処理工程では、より良好な凝集処理を行うため、高分子凝集剤を添加してフロック径を成長させることが好ましい。凝集槽12の後段に別途、反応槽を設けて、反応槽において高分子凝集剤を添加すればよい。 In the coagulation treatment step, it is preferable to add a polymer flocculant to grow the floc diameter in order to perform a better coagulation treatment. A reaction tank may be separately provided after the coagulation tank 12, and the polymer flocculant may be added in the reaction tank.

高分子凝集剤としては、ノニオン性高分子凝集剤、アニオン性高分子凝集剤またはカチオン性高分子凝集剤等、特に制限されるものではないが、例えば、ポリアクリルアミド、ポリアクリル酸ナトリウム、アクリルアミド・アクリル酸塩共重合体、アクリルアミドプロパンスルフォン酸ナトリウム、キトサン、ジメチルアミノエチルメタクリレート、ジメチルアミノエチルアクリレートおよびポリアミジン等が挙げられる。高分子凝集剤は、1種単独でも、2種以上を組み合わせて用いてもよい。 The polymer flocculant is not particularly limited, such as a nonionic polymer flocculant, an anionic polymer flocculant, or a cationic polymer flocculant, but for example, polyacrylamide, sodium polyacrylate, acrylamide, and the like. Examples thereof include acrylate copolymers, sodium acrylamide propanesulfonate, chitosan, dimethylaminoethyl methacrylate, dimethylaminoethyl acrylate and polyamidine. The polymer flocculant may be used alone or in combination of two or more.

高分子凝集剤の添加量には、特に制限はないが、例えば、0.1~10mg/Lの範囲である。 The amount of the polymer flocculant added is not particularly limited, but is, for example, in the range of 0.1 to 10 mg / L.

凝集処理工程におけるpHは、例えば、4~11の範囲に調整すればよい。 The pH in the coagulation treatment step may be adjusted to, for example, in the range of 4 to 11.

pH調整剤としては、塩酸、硫酸等の酸や、水酸化ナトリウム等のアルカリである。 Examples of the pH adjuster include acids such as hydrochloric acid and sulfuric acid, and alkalis such as sodium hydroxide.

混合工程、凝集処理工程における液温度は、特に制限はなく、例えば、15~35℃の範囲である。 The liquid temperature in the mixing step and the coagulation treatment step is not particularly limited, and is, for example, in the range of 15 to 35 ° C.

固液分離装置14としては、特に限定されるものではないが、例えば、沈殿処理、ろ過処理、膜分離処理等が挙げられる。沈殿処理は、特に限定されるものではないが、例えば、沈殿槽を用いた自然沈殿処理以外に、遠心分離器等を用いた強制沈殿処理でもよい。また、ろ過処理は、特に限定されるものではないが、例えば、重力式、圧力式、サイフォン式、上向流式、ろ材循環式、連続ろ過式等のろ過器と、アンスラサイト、砂、けい砂、砂利、活性炭、プラスチック等のろ材とを用いてろ過することができる。膜分離処理は、特に限定されるものではないが、例えば、精密ろ過膜(MF膜)、限外ろ過膜(UF膜)等を用いて膜分離することができる。その他の固液分離装置14としては、一般的に知られている加圧浮上ろ過装置、加圧浮上膜ろ過装置、スラッジブランケット型凝集沈殿装置等を採用することができる。 The solid-liquid separation device 14 is not particularly limited, and examples thereof include a precipitation treatment, a filtration treatment, and a membrane separation treatment. The precipitation treatment is not particularly limited, but for example, a forced precipitation treatment using a centrifuge or the like may be used in addition to the natural precipitation treatment using a settling tank. The filtration process is not particularly limited, but is, for example, a filter such as a gravity type, a pressure type, a siphon type, an upward flow type, a filter medium circulation type, a continuous filtration type, and anthracite, sand, and slag. It can be filtered using a filter medium such as sand, gravel, activated carbon, or plastic. The membrane separation treatment is not particularly limited, but the membrane can be separated by using, for example, a microfiltration membrane (MF membrane), an ultrafiltration membrane (UF membrane), or the like. As the other solid-liquid separation device 14, a generally known pressurized flotation filtration device, pressurized flotation membrane filtration device, sludge blanket type coagulation sedimentation device, or the like can be adopted.

以下、実施例を挙げ、本発明をより具体的に詳細に説明するが、本発明は、以下の実施例に限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples.

<実施例1>
茶色と黒色の混合比率を変えた粉末活性炭抑留ブランケットの画像の模擬サンプルを作製した(図2参照)。粉末活性炭の黒色を登録色とした。模擬サンプルを色識別センサ(株式会社キーエンス製、アンプ内蔵型ホワイトスポット光電センサLR-Wシリーズ)を用いて測定し、表示値と粉末活性炭の抑留比(粉炭抑留比)の相関を確認した。色識別センサの表示値と粉炭抑留比との関係を図3に示す。
<Example 1>
A simulated sample of an image of a powdered activated carbon detention blanket with different mixing ratios of brown and black was prepared (see FIG. 2). The black color of the powdered activated carbon was used as the registered color. The simulated sample was measured using a color identification sensor (Keyence Co., Ltd., white spot photoelectric sensor LR-W series with built-in amplifier), and the correlation between the displayed value and the detention ratio of powdered activated carbon (powdered carbon detention ratio) was confirmed. FIG. 3 shows the relationship between the display value of the color identification sensor and the pulverized coal detention ratio.

このように、センサ表示値と粉炭抑留比とにはよい相関が得られた。 In this way, a good correlation was obtained between the sensor display value and the pulverized coal detention ratio.

したがって、上記成分濃度の測定方法および測定装置により、異なる2成分以上の物質が含まれる液体において少なくとも1成分の濃度を測定することができることがわかった。これにより、粉末活性炭を用いる凝集処理において、凝集液に含まれる粉末活性炭の濃度を管理することができる。 Therefore, it was found that the concentration of at least one component can be measured in a liquid containing two or more different substances by the above-mentioned method for measuring the component concentration and the measuring device. This makes it possible to control the concentration of the powdered activated carbon contained in the coagulated liquid in the coagulation treatment using the powdered activated carbon.

1 水処理装置、10 混合槽、12 凝集槽、14 固液分離装置、16 被処理水配管、18 混合液配管、20 凝集液配管、22 処理水配管、24,28 撹拌装置、26 粉末活性炭添加配管、30 凝集剤添加配管、32 pH調整剤添加配管、34 SS濃度測定装置、36 色識別センサ。 1 Water treatment equipment, 10 mixing tank, 12 coagulation tank, 14 solid-liquid separation device, 16 treated water piping, 18 mixed liquid piping, 20 coagulating liquid piping, 22 treated water piping, 24, 28 stirrer, 26 powder activated charcoal addition Piping, 30 coagulant-added piping, 32 pH adjuster-added piping, 34 SS concentration measuring device, 36 color identification sensor.

Claims (6)

色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定方法であって、
全対象成分の濃度を測定する全対象成分濃度測定工程と、
白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の前記測定対象成分の割合を算出する色識別工程と、
を含み、
前記全対象成分濃度測定工程により測定した全対象成分濃度と、前記色識別工程により算出した前記測定対象成分の割合との積から前記液体中の前記測定対象成分の濃度を算出することを特徴とする成分濃度の測定方法。
A method for measuring the concentration of a component, which measures the concentration of at least one component to be measured in a liquid containing two or more target components having different colors.
All target component concentration measurement process to measure the concentration of all target components, and
The white LED light is irradiated to receive the reflected light, the color of the measurement target is discriminated based on the RGB ratio, the color of at least one component of the target components is identified, and the measurement target among all the target components is identified. A color identification process that calculates the ratio of components, and
Including
The feature is that the concentration of the measurement target component in the liquid is calculated from the product of the total target component concentration measured by the total target component concentration measuring step and the ratio of the measurement target component calculated by the color identification step. How to measure the component concentration.
請求項1に記載の成分濃度の測定方法であって、
前記色識別工程において、前記全対象成分中の対象成分のうちの少なくとも1つの成分について測定したRGB比と、全対象成分について測定したRGB比とに基づいて前記割合を算出することを特徴とする成分濃度の測定方法。
The method for measuring a component concentration according to claim 1.
The color identification step is characterized in that the ratio is calculated based on the RGB ratio measured for at least one of the target components in all the target components and the RGB ratio measured for all the target components. How to measure component concentration.
色の異なる2つ以上の対象成分が含まれる液体において少なくとも1つの測定対象成分の濃度を測定する成分濃度の測定装置であって、
全対象成分の濃度を測定する全対象成分濃度測定手段と、
白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記対象成分のうちの少なくとも1つの成分の色を識別して全対象成分中の前記測定対象成分の割合を算出する色識別手段と、
を備え、
前記全対象成分濃度測定手段により測定した全対象成分濃度と、前記色識別手段により算出した前記測定対象成分の割合との積から前記液体中の前記測定対象成分の濃度を算出することを特徴とする成分濃度の測定装置。
A component concentration measuring device that measures the concentration of at least one measurement target component in a liquid containing two or more target components having different colors.
All target component concentration measuring means for measuring the concentration of all target components,
The white LED light is irradiated to receive the reflected light, the color of the measurement target is discriminated based on the RGB ratio, the color of at least one component of the target components is identified, and the measurement target among all the target components is identified. Color identification means to calculate the ratio of components,
Equipped with
The feature is that the concentration of the measurement target component in the liquid is calculated from the product of the total target component concentration measured by the total target component concentration measuring means and the ratio of the measurement target component calculated by the color identification means. A device for measuring the component concentration.
請求項に記載の成分濃度の測定装置であって、
前記色識別手段は、前記全対象成分中の対象成分のうちの少なくとも1つの成分について測定したRGB比と、全対象成分について測定したRGB比とに基づいて前記割合を算出するものであることを特徴とする成分濃度の測定装置。
The device for measuring the component concentration according to claim 3 .
The color discrimination means calculates the ratio based on the RGB ratio measured for at least one of the target components in the total target components and the RGB ratio measured for all the target components. A characteristic component concentration measuring device.
被処理水と粉末活性炭とを混合する混合工程と、
前記混合された混合液を凝集剤により凝集処理する凝集処理工程と、
前記凝集処理された凝集液における全SS濃度を測定する全SS濃度測定工程と、
白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記凝集液に含まれるSS成分のうちの少なくとも1つの色を識別して全SS成分中の前記粉末活性炭の割合を算出する色識別工程と、
を含み、
前記全SS濃度測定工程により測定した全SS濃度と、前記色識別工程により算出した前記粉末活性炭の割合との積から前記凝集液中の前記粉末活性炭の濃度を算出し、前記算出した前記粉末活性炭の濃度に基づいて、前記粉末活性炭の使用量を調整することを特徴とする水処理方法。
The mixing process of mixing the water to be treated and the powdered activated carbon,
A coagulation treatment step of coagulating the mixed liquid with a coagulant, and a coagulation treatment step.
The total SS concentration measuring step for measuring the total SS concentration in the aggregated liquid which has been aggregated, and the total SS concentration measuring step.
The white LED light is irradiated to receive the reflected light, the color to be measured is discriminated based on the RGB ratio, and at least one color of the SS components contained in the coagulated liquid is identified and among all the SS components. The color identification step for calculating the ratio of the powdered activated charcoal and
Including
The concentration of the powdered activated carbon in the coagulated liquid was calculated from the product of the total SS concentration measured by the total SS concentration measuring step and the ratio of the powdered activated carbon calculated by the color identification step, and the calculated powdered activated carbon was calculated. A water treatment method comprising adjusting the amount of the powdered activated carbon used based on the concentration of the powdered carbon.
被処理水と粉末活性炭とを混合する混合手段と、
前記混合された混合液を凝集剤により凝集処理する凝集処理手段と、
前記凝集処理された凝集液における全SS濃度を測定する全SS濃度測定手段と、
白色LED光を照射して反射光を受光し、測定対象の色をRGB比に基づき判別して、前記凝集液に含まれるSS成分のうちの少なくとも1つの色を識別して全SS成分中の前記粉末活性炭の割合を算出する色識別手段と、
を備え、
前記全SS濃度測定手段により測定した全SS濃度と、前記色識別手段により算出した前記粉末活性炭の割合との積から前記凝集液中の前記粉末活性炭の濃度を算出し、前記算出した前記粉末活性炭の濃度に基づいて、前記粉末活性炭の使用量を調整することを特徴とする水処理装置。
A mixing means for mixing the water to be treated and the powdered activated carbon,
A coagulation treatment means for coagulating the mixed liquid with a coagulant, and a coagulation treatment means.
The total SS concentration measuring means for measuring the total SS concentration in the aggregated liquid which has been aggregated, and the total SS concentration measuring means.
The white LED light is irradiated to receive the reflected light, the color to be measured is discriminated based on the RGB ratio, and at least one color of the SS components contained in the coagulated liquid is identified and among all the SS components. A color identification means for calculating the ratio of the powdered activated charcoal and
Equipped with
The concentration of the powdered activated carbon in the coagulated liquid was calculated from the product of the total SS concentration measured by the total SS concentration measuring means and the ratio of the powdered activated carbon calculated by the color identification means, and the calculated powdered activated carbon was calculated. A water treatment apparatus characterized in that the amount of the powdered activated carbon used is adjusted based on the concentration of the powdered activated carbon.
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