JP2017133999A - Water quality analysis device and water quality analysis method - Google Patents

Water quality analysis device and water quality analysis method Download PDF

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JP2017133999A
JP2017133999A JP2016015652A JP2016015652A JP2017133999A JP 2017133999 A JP2017133999 A JP 2017133999A JP 2016015652 A JP2016015652 A JP 2016015652A JP 2016015652 A JP2016015652 A JP 2016015652A JP 2017133999 A JP2017133999 A JP 2017133999A
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water
sensor
water quality
housing
unit
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JP6684426B2 (en
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晴貴 仁科
Haruki Nishina
晴貴 仁科
隆仁 及川
Takahito Oikawa
隆仁 及川
健二 中本
Kenji Nakamoto
健二 中本
勝 渡辺
Masaru Watanabe
勝 渡辺
智子 井上
Tomoko Inoue
智子 井上
暢 松尾
Toru Matsuo
暢 松尾
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Chugoku Electric Power Co Inc
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Abstract

PROBLEM TO BE SOLVED: To measure the water quality of water with the water exposed to the air as less as possible.SOLUTION: A water quality analysis device 1 includes a water intake filter 10, a sensor housing part 30 connected to the water intake filter 10, a suction device 20 connected to the sensor housing part 30 and suctioning water from the water intake filter 10 through the sensor housing part 30, and a sensor part 40 accommodated in a sensor housing part 30 and detecting a water quality index.SELECTED DRAWING: Figure 1

Description

本発明は、水質分析装置に関するとともに、水質分析装置を用いて水質を分析する方法に関する。   The present invention relates to a water quality analyzer and a method for analyzing water quality using the water quality analyzer.

特許文献１には、岩石を収納した反応セルとシリンジとが連通管によって連結され、その連通管には採取バルブが設けられた溶出元素採取装置が開示されている。この溶出元素採取装置の使用の際には、採取バルブを開状態にして、岩石の中を透水した二酸化炭素溶解溶液をシリンジによって吸引する。   Patent Document 1 discloses an elution element collection device in which a reaction cell containing a rock and a syringe are connected by a communication pipe, and a collection valve is provided in the communication pipe. When using this eluting element collection device, the collection valve is opened, and the carbon dioxide-dissolved solution that has permeated through the rock is sucked with a syringe.

特許文献２には、収納容器に取水口が設けられ、その取水口にシリンジが連結された間隙水抽出装置が開示されている。間隙水抽出装置の使用の際には、岩石及び超純水を収納容器に収容し、岩石に含まれる間隙水を超純水に抽出し、その超純水をシリンジによって吸引する。そして、シリンジに採取した水に含まれる間隙水の水質を分析する。   Patent Literature 2 discloses a pore water extraction device in which a water intake is provided in a storage container and a syringe is connected to the water intake. When using the pore water extraction device, rock and ultrapure water are accommodated in a storage container, the pore water contained in the rock is extracted into ultrapure water, and the ultrapure water is sucked with a syringe. And the quality of the pore water contained in the water collected in the syringe is analyzed.

特許文献３には、地盤のボーリング孔内にサンプラーボトルを沈降させて、地下水をそのサンプラーボトルに採取し、そのサンプラーボトルを地上に引き上げ、そのサンプラーボトルとｐＨ計とＯＲＰ計を窒素充填グローブボックスに収容し、そのグローブボックス内でサンプラーボトルを開封することで地下水のｐＨとＯＲＰをｐＨ計及びＯＲＰ計に寄って測定することが開示されている。   In Patent Document 3, a sampler bottle is settled in the borehole of the ground, groundwater is collected in the sampler bottle, the sampler bottle is pulled up to the ground, the sampler bottle, the pH meter, and the ORP meter are filled with nitrogen. And measuring the pH and ORP of groundwater by approaching the pH meter and ORP meter by opening the sampler bottle in the glove box.

特開２００９−５８４４１号公報JP 2009-58441 A 特開２００９−５８４４０号公報JP 2009-58440 A 特開２０１５−１７９０５号公報Japanese Patent Laying-Open No. 2015-17905

ところで、特許文献２に記載の技術では、採取現場の岩石を収納容器に収納するまでの過程で、岩石中の間隙水に空気中の酸素が接触してしまうので、間隙水の溶存成分が変化して、間隙水の水質を正確に分析することができなかった。
特許文献３に記載の技術では、地下水のｐＨ及びＯＲＰを測定するのに多くの工程を経る必要があり、その測定に時間を要していた。
本発明は、上記事情に鑑みてなされたものであり、水を可能な限り気中に暴露させずに、その水の水質を短時間で測定できるようにすることを目的とする。 By the way, in the technique of patent document 2, since the oxygen in air contacts the pore water in a rock in the process until it accommodates the rock of a collection field in a storage container, the dissolved component of pore water changes. Therefore, the water quality of pore water could not be accurately analyzed.
In the technique described in Patent Document 3, it is necessary to go through many steps to measure the pH and ORP of groundwater, and the measurement takes time.
This invention is made | formed in view of the said situation, and it aims at enabling it to measure the water quality of the water in a short time, without exposing water to air as much as possible.

以上の課題を解決するための主たる発明は、取水部と、前記取水部に接続されたセンサ収容部と、前記センサ収容部に接続され、前記センサ収容部内の空気を吸引する吸引機器と、前記センサ収容部に収容され、水質指標を検知するセンサ部と、を備える水質分析装置である。
また、前記水質分析装置を用いた水質分析方法は、前記取水部を測定地に設置する設置工程と、前記設置工程後に、前記吸引機器により前記センサ収容部内の空気を吸引することによって前記測定地の水を前記センサ収容部内に吸い上げる吸い上げ工程と、前記吸い上げ工程によって前記センサ収容部に吸い上げられた水の水質指標を前記センサ部によって検知する検知工程と、を備える。 The main invention for solving the above problems includes a water intake, a sensor storage connected to the water intake, a suction device connected to the sensor storage and sucking air in the sensor storage, and And a sensor unit that is housed in the sensor housing unit and detects a water quality index.
The water quality analysis method using the water quality analyzer includes an installation step of installing the water intake unit at a measurement site, and the measurement site by sucking air in the sensor housing unit by the suction device after the installation step. A suction step of sucking up the water into the sensor housing portion, and a detection step of detecting the water quality index of the water sucked into the sensor housing portion by the suction step by the sensor portion.

本発明によれば、センサ収容部内の空気を吸引機器により吸引すると、センサ収容部内が負圧になるので、その負圧により測定地の水がセンサ収容部内に吸引される。そして、センサ部がセンサ収容部に収容されているので、測定地の水がセンサ収容部に採取してすぐに、その水の水質指標をセンサ部によって検知することができる。また、採取した水の気中への暴露を抑えることができ、水質指標の測定値が正確になる。   According to the present invention, when the air in the sensor housing portion is sucked by the suction device, the inside of the sensor housing portion becomes negative pressure, and the water in the measurement site is sucked into the sensor housing portion by the negative pressure. And since the sensor part is accommodated in the sensor accommodating part, the water quality parameter | index of the water can be detected by the sensor part as soon as the water of a measurement place is extract | collected by the sensor accommodating part. In addition, exposure of the collected water to the air can be suppressed, and the measured value of the water quality index becomes accurate.

図１は、水質分析装置の一部を破断した状態で示した概略側面図である。FIG. 1 is a schematic side view showing a state in which a part of the water quality analyzer is broken.

以下、図面を参照して、本発明の実施形態について説明する。但し、以下に述べる実施形態には、本発明を実施するために技術的に好ましい種々の限定が付されているが、本発明の範囲を以下の実施形態及び図示例に限定するものではない。   Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

図１は、水質分析装置１の使用状態を示した図面である。
水質分析装置１は採水器及び水質計器を備え、その採水器はフィルタ１０、吸引機器２０、センサ収容部３０及び可撓性チューブ６０，７０を備え、その水質測定器はセンサ部４０、分析機本体５０及びケーブル８０を備える。 FIG. 1 is a drawing showing a usage state of the water quality analyzer 1.
The water quality analyzer 1 includes a water sampler and a water quality meter, and the water sampler includes a filter 10, a suction device 20, a sensor storage unit 30, and flexible tubes 60 and 70. An analyzer main body 50 and a cable 80 are provided.

取水フィルタ１０は、セラミック製の多孔質な濾材により構成されている。   The intake filter 10 is made of a porous filter medium made of ceramic.

センサ収容部（センサホルダ）３０は、センサ部４０が装着される有底筒状の透明なハウジング３１と、そのハウジング３１の開口の内周面に周方向に設けられた止水材３２と、を有する。そのハウジング３１の開口にはセンサ部４０が挿入され、センサ部４０の先端面及び外周面とハウジング３１の内面との間には空隙３６が形成される。止水材３２はリング状に形成されたゴム材からなり、その止水材３２によってハウジング３１の開口の内周面とセンサ部４０の外周面との間が止水されている。ハウジング３１の底面には、ハウジング３１の内部空間に通じる連結ポート３３が形成され、ハウジング３１の外周面には、ハウジング３１の内部空間に通じる連結ポート３４が形成されている。連結ポート３３には、連結ポート３３を開閉する栓３５が設けられている。   The sensor accommodating portion (sensor holder) 30 includes a bottomed cylindrical transparent housing 31 to which the sensor portion 40 is mounted, and a water stop material 32 provided in the circumferential direction on the inner peripheral surface of the opening of the housing 31. Have The sensor unit 40 is inserted into the opening of the housing 31, and a gap 36 is formed between the front end surface and the outer peripheral surface of the sensor unit 40 and the inner surface of the housing 31. The water stop material 32 is made of a rubber material formed in a ring shape, and the water stop material 32 stops water between the inner peripheral surface of the opening of the housing 31 and the outer peripheral surface of the sensor unit 40. A connection port 33 that communicates with the internal space of the housing 31 is formed on the bottom surface of the housing 31, and a connection port 34 that communicates with the internal space of the housing 31 is formed on the outer peripheral surface of the housing 31. The connection port 33 is provided with a plug 35 that opens and closes the connection port 33.

センサ収容部３０と取水フィルタ１０は可撓性チューブ６０によって連結されている。つまり、可撓性チューブ６０の一端が取水フィルタ１０に連結され、その可撓性チューブ６０の他端がセンサ収容部３０の連結ポート３３に連結されている。   The sensor housing 30 and the water intake filter 10 are connected by a flexible tube 60. That is, one end of the flexible tube 60 is connected to the water intake filter 10, and the other end of the flexible tube 60 is connected to the connection port 33 of the sensor housing portion 30.

吸引機器２０は、シリンダ２１、プランジャ２２、プランジャロッド２３、フランジ２４、取水ポート２５及び栓２６等を有するシリンジからなる。シリンダ２１は、一端側に底部を有するとともに他端側が開口した筒状体に形成されている。シリンダ２１の一端部には、シリンダ２１の内部空間に通じる取水ポート２５が形成され、その取水ポート２５には、取水ポート２５を開閉する栓２６が設けられている。プランジャロッド２３の一端にプランジャ２２が取り付けられ、プランジャロッド２３の他端にフランジ２４が設けられている。プランジャロッド２３の一端側がシリンダ２１に挿入され、プランジャ２２がシリンダ２１の内周面に対して摺動可能となってシリンダ２１に嵌め込まれている。プランジャ２２は少なくともその外周面にゴムを有し、そのゴムによってシリンダ２１の内周面とプランジャ２２の外周面との間が止水されている。   The suction device 20 includes a syringe having a cylinder 21, a plunger 22, a plunger rod 23, a flange 24, a water intake port 25, a stopper 26, and the like. The cylinder 21 is formed in a cylindrical body having a bottom portion at one end side and opened at the other end side. A water intake port 25 communicating with the internal space of the cylinder 21 is formed at one end of the cylinder 21, and a plug 26 for opening and closing the water intake port 25 is provided in the water intake port 25. A plunger 22 is attached to one end of the plunger rod 23, and a flange 24 is provided to the other end of the plunger rod 23. One end side of the plunger rod 23 is inserted into the cylinder 21, and the plunger 22 is slidable with respect to the inner peripheral surface of the cylinder 21 and is fitted into the cylinder 21. The plunger 22 has rubber at least on its outer peripheral surface, and the rubber stops water between the inner peripheral surface of the cylinder 21 and the outer peripheral surface of the plunger 22.

センサ収容部３０と吸引機器２０は可撓性チューブ７０によって接続されている。つまり、可撓性チューブ７０の一端がセンサ収容部３０の連結ポート３４に連結され、可撓性チューブ７０の他端が吸引機器２０の取水ポート２５に連結されている。   The sensor housing part 30 and the suction device 20 are connected by a flexible tube 70. That is, one end of the flexible tube 70 is connected to the connection port 34 of the sensor housing unit 30, and the other end of the flexible tube 70 is connected to the water intake port 25 of the suction device 20.

センサ部４０は、水質を表す指標を検知する検知部である。センサ部４０と分析機本体５０がケーブルによって接続され、センサ部４０の検知結果が分析機本体５０に転送される。分析機本体５０はセンサ部４０に電力を供給したり、センサ部４０を制御したり、各種の演算処理をしたりする。また、分析機本体５０には液晶ディスプレイ等の表示部５１が設けられており、検知された水質指標が表示部５１に表示される。   The sensor unit 40 is a detection unit that detects an index representing water quality. The sensor unit 40 and the analyzer main body 50 are connected by a cable, and the detection result of the sensor unit 40 is transferred to the analyzer main body 50. The analyzer body 50 supplies power to the sensor unit 40, controls the sensor unit 40, and performs various arithmetic processes. The analyzer main body 50 is provided with a display unit 51 such as a liquid crystal display, and the detected water quality index is displayed on the display unit 51.

具体的には、センサ部４０には、水質指標の測定原理に応じた構造体と、その構造体に取り付けられているとともに、物理量を電気信号に変換する一又は複数のセンサ等とが設けられている。水質指標としては、例えば導電率、電気抵抗率、総溶解不純得物濃度、塩分濃度、温度、水素イオン濃度指数（ｐＨ）、酸化還元電位（ＯＲＰ）、溶存酸素量（ＤＯ）、浮遊物質量（ＳＳ）、濁度、透明度、色、残留塩素等である。構造体は、水質を表す指標の測定に適した構造を有する。センサとしては、例えば、電気抵抗センサ、電流センサ、電圧センサ、光センサ、フォトダイオード、光電変換素子、イメージセンサ、温度センサ、熱電対、サーミスタ、圧力センサ、磁気センサ等である。分析機本体５０には電子回路が内蔵されており、その電子回路はセンサ部４０のセンサによって出力された電気信号を増幅・処理等することによって水質の指標を演算する。電子回路がディスプレイ５１を駆動することによって、電子回路によって演算された水質の指標がディスプレイ５１に表示される。また、分析機本体５０にはメモリが内蔵されており、電子回路がそのメモリを駆動することによって、電子回路によって演算された水質の指標がメモリに記録される。
なお、センサ部４０、分析機本体５０及びケーブル８０のセットには、市販されたポータブル水質計を用いることができる。 Specifically, the sensor unit 40 is provided with a structure according to the measurement principle of the water quality index, and one or a plurality of sensors that are attached to the structure and convert a physical quantity into an electrical signal. ing. Water quality indicators include, for example, conductivity, electrical resistivity, total dissolved impurity product concentration, salinity concentration, temperature, hydrogen ion concentration index (pH), redox potential (ORP), dissolved oxygen content (DO), suspended solid content (SS), turbidity, transparency, color, residual chlorine and the like. The structure has a structure suitable for measuring an index representing water quality. Examples of the sensor include an electric resistance sensor, a current sensor, a voltage sensor, an optical sensor, a photodiode, a photoelectric conversion element, an image sensor, a temperature sensor, a thermocouple, a thermistor, a pressure sensor, and a magnetic sensor. The analyzer main body 50 incorporates an electronic circuit, and the electronic circuit calculates an indicator of water quality by amplifying and processing the electrical signal output by the sensor of the sensor unit 40. When the electronic circuit drives the display 51, an indicator of water quality calculated by the electronic circuit is displayed on the display 51. The analyzer main body 50 has a built-in memory, and the electronic circuit drives the memory so that the water quality index calculated by the electronic circuit is recorded in the memory.
A commercially available portable water quality meter can be used to set the sensor unit 40, the analyzer main body 50, and the cable 80.

続いて、水質分析装置１を用いた間隙水の分析方法について説明する。
まず、吸引機器２０を組み立てる。つまり、栓２６を開けた上で、プランジャ２２をシリンダ２１の開口に嵌め込んで、プランジャ２２及びプランジャロッド２３をシリンダ２１に押し込むことによって、プランジャ２２をシリンダ２１の底部にまで移動させる。これにより、プランジャ２２よりもシリンダ２１の底部側の領域内の空気を排出し、その領域の容積をほぼ０にする。
次に、可撓性チューブ７０の一端をセンサ収容部３０の連結ポート３４に連結し、可撓性チューブ７０の他端を吸引機器２０の取水ポート２５に連結する。また、可撓性チューブ６０の一端を取水フィルタ１０に連結し、可撓性チューブ６０の他端をセンサ収容部３０の連結ポート３３に連結する。
次に、栓３５を開けた上で、センサ部４０をセンサ収容部３０のハウジング３１の開口に挿入して、センサ部４０をセンサ収容部３０に取り付ける。そして、センサ部４０と分析機本体５０をケーブル８０によって接続する。 Next, a method for analyzing pore water using the water quality analyzer 1 will be described.
First, the suction device 20 is assembled. That is, after opening the stopper 26, the plunger 22 is fitted into the opening of the cylinder 21, and the plunger 22 and the plunger rod 23 are pushed into the cylinder 21, thereby moving the plunger 22 to the bottom of the cylinder 21. Thereby, the air in the area | region of the bottom side of the cylinder 21 rather than the plunger 22 is discharged | emitted, and the volume of the area | region is made into zero.
Next, one end of the flexible tube 70 is connected to the connection port 34 of the sensor housing 30, and the other end of the flexible tube 70 is connected to the water intake port 25 of the suction device 20. One end of the flexible tube 60 is connected to the water filter 10, and the other end of the flexible tube 60 is connected to the connection port 33 of the sensor housing 30.
Next, after opening the plug 35, the sensor unit 40 is inserted into the opening of the housing 31 of the sensor housing unit 30, and the sensor unit 40 is attached to the sensor housing unit 30. Then, the sensor unit 40 and the analyzer main body 50 are connected by a cable 80.

また、原位置の地盤９０に取水フィルタ１０を埋設する。そうすると、地盤９０の間隙水が水圧により取水フィルタ１０に集水される。地盤９０は、河川、沼、池、湖、海等の水底の地盤でもよいし、地上の地盤でもよいし、堆積されたヘドロであってもよい。
次に、プランジャロッド２３を引いて、プランジャ２２をシリンダ２１の開口側（図中上方）へ移動させる。そうすると、負圧によってセンサ収容部３０のハウジング３１内の空気が吸引機器２０のシリンダ２１に吸引されるとともに、ハウジング３１内の負圧によって地盤９０中の間隙水が取水フィルタ１０に吸引される。取水フィルタ１０に吸引される間隙水は取水フィルタ１０によって濾過されて、ハウジング３１内に流入する。更にプランジャロッド２３を引くことによって、間隙水をハウジング３１内に充填するとともに、シリンダ２１内に吸引する。ここで、ハウジング３１が透明材からなるので、ハウジング３１内の間隙水を観察して、間隙水の充填を目視することができる。また、間隙水が取水フィルタ１０によって濾過されるので、土砂等が可撓性チューブ６０，７０やセンサ収容部３０等に詰まらない。
吸引機器２０による吸引によって目的の量の間隙水がシリンダ２１内に貯留されたら、プランジャ２２及びプランジャロッド２３の引きを終了する。
その後すぐに、栓２６，３５を閉める。これにより、シリンダ２１が密閉状態となり、取水ポート２５を通じた外気の侵入を抑えられる。センサ収容部３０についても同様に密閉状態となる。 Further, the water intake filter 10 is buried in the ground 90 in the original position. Then, the pore water in the ground 90 is collected in the water intake filter 10 by water pressure. The ground 90 may be a bottom of water such as a river, a swamp, a pond, a lake, or the sea, a ground on the ground, or a sludge accumulated.
Next, the plunger rod 23 is pulled, and the plunger 22 is moved to the opening side of the cylinder 21 (upward in the figure). Then, air in the housing 31 of the sensor housing portion 30 is sucked into the cylinder 21 of the suction device 20 by negative pressure, and pore water in the ground 90 is sucked into the water intake filter 10 by negative pressure in the housing 31. The pore water sucked by the water intake filter 10 is filtered by the water intake filter 10 and flows into the housing 31. Further, by pulling the plunger rod 23, the gap water is filled in the housing 31 and sucked into the cylinder 21. Here, since the housing 31 is made of a transparent material, it is possible to observe the gap water in the housing 31 and visually check the filling of the gap water. In addition, since the pore water is filtered by the water intake filter 10, earth and sand and the like are not clogged in the flexible tubes 60 and 70, the sensor housing portion 30, and the like.
When the target amount of pore water is stored in the cylinder 21 by the suction by the suction device 20, the pulling of the plunger 22 and the plunger rod 23 is finished.
Immediately thereafter, the stoppers 26 and 35 are closed. As a result, the cylinder 21 is hermetically sealed, and entry of outside air through the water intake port 25 can be suppressed. The sensor housing portion 30 is similarly sealed.

次に、分析機本体５０を操作して、水質指標の測定を開始する。そうすると、センサ収容部３０内の間隙水の水資指標がセンサ部４０によって検知され、その水質指標が分析機本体５０の表示部５１に表示される。なお、吸引機器２０によって間隙水を吸い上げている時に、分析機本体５０及びセンサ部４０によって水質指標を測定してもよい。   Next, the analyzer main body 50 is operated to start measuring the water quality index. Then, the water index of pore water in the sensor housing unit 30 is detected by the sensor unit 40, and the water quality index is displayed on the display unit 51 of the analyzer main body 50. Note that the water quality index may be measured by the analyzer main body 50 and the sensor unit 40 while the pore water is sucked up by the suction device 20.

次に、取水フィルタ１０を地盤９０から引き抜き、可撓性チューブ７０を取水ポート２５から取り外す。   Next, the water intake filter 10 is pulled out from the ground 90 and the flexible tube 70 is removed from the water port 25.

採水後は、採取した間隙水を吸引機器２０ごと試験場に搬送し、試験場では、採取した間隙水を分析する。例えばＢＯＤ（生物化学的酸素消費量）分析、ＣＯＤ（化学的酸素要求量）分析、大腸菌群数分析、ヘキサン抽出物質分析、全りん分析等を行うが、特にセンサ部４０及び分析機本体５０によって測定できない水質指標を測定することが好ましい。間隙水の分析に際しては、シリンダ２１内に間隙水を収容した状態で水質試験を行う。   After sampling, the collected pore water is transported to the test site together with the suction device 20, and the collected pore water is analyzed at the test site. For example, BOD (Biochemical Oxygen Consumption) analysis, COD (Chemical Oxygen Demand) analysis, E. coli group count analysis, hexane extract substance analysis, total phosphorus analysis, etc. It is preferable to measure a water quality index that cannot be measured. When analyzing the pore water, a water quality test is performed with the pore water contained in the cylinder 21.

本実施形態によれば、地盤９０から間隙水を吸い上げてすぐにその間隙水の水質の指標を測定することができる。また、地盤９０から間隙水を吸引した直後にその間隙水の水質指標を測定したので、特に、ハウジング３１に間隙水が充填された直後に栓３５の閉栓によって間隙水を密閉したので、ハウジング３１内の間隙水が空気・酸素に接触する時間・機会が減る。よって、水質指標の測定値が正確となる。特に、測定する水質指標が溶存酸素量である場合に有効的である。   According to the present embodiment, the water quality index of the pore water can be measured immediately after the pore water is sucked up from the ground 90. Further, since the water quality index of the pore water was measured immediately after the pore water was sucked from the ground 90, the pore water was sealed by closing the plug 35 immediately after the gap water was filled in the housing 31, so that the housing 31 The time / opportunity that the pore water inside comes into contact with air / oxygen is reduced. Therefore, the measured value of the water quality index is accurate. This is particularly effective when the water quality index to be measured is the amount of dissolved oxygen.

また、採水直後に栓２６の閉栓によってシリンダ２１内の間隙水を密閉したので、その間隙水の気中への暴露を抑制できる。よって、その後の試験場における水質検査の結果の正確性が向上する。   Further, since the gap water in the cylinder 21 is sealed by closing the plug 26 immediately after sampling, exposure of the gap water to the air can be suppressed. Therefore, the accuracy of the result of the water quality test at the subsequent test site is improved.

また、取水フィルタ１０が設けられているので、その取水フィルタ１０を原位置の地盤９０に埋設して、原位置の間隙水を直接採取することができる。それゆえ、間隙水の気中への暴露を抑えられ、センサ部４０及び分析機本体５０による測定結果が正確となる。   Further, since the water intake filter 10 is provided, the water intake filter 10 can be embedded in the ground 90 at the original position, and the pore water at the original position can be directly collected. Therefore, the exposure of pore water to the air can be suppressed, and the measurement results by the sensor unit 40 and the analyzer main body 50 are accurate.

上記実施形態では、栓２６が取水ポート２５に設けられていたが、可撓性チューブ７０に設けられていてもよい。栓３５についても可撓性チューブ６０に設けられてもよい。
また、可撓性チューブ６０の代わりに、剛性の高い非可撓性の管によって取水フィルタ１０とセンサ収容部３０が接続されてもよい。可撓性チューブ７０も非可撓性管に変更してもよい。
また、多孔質な取水フィルタ１０をストレーナ型フィルタに変更してもよい。
また、シリンダ２１の他端がキャップ等の蓋部材によって閉塞され、プランジャロッド２３が蓋部材を貫通し、その蓋部材に通気孔が形成されていてもよい。
また、可撓性チューブ６０を省略し、取水フィルタ１０がセンサ収容部３０の連結ポート３３に直接接続されてもよい。可撓性チューブ７０についても同様であり、センサ収容部３０の連結ポート３４と吸引機器２０の取水ポート２５が直接接続されてもよい。 In the above embodiment, the stopper 26 is provided in the water intake port 25, but may be provided in the flexible tube 70. The plug 35 may also be provided on the flexible tube 60.
Further, instead of the flexible tube 60, the water intake filter 10 and the sensor housing portion 30 may be connected by a highly rigid non-flexible tube. The flexible tube 70 may be changed to a non-flexible tube.
Further, the porous water intake filter 10 may be changed to a strainer type filter.
Further, the other end of the cylinder 21 may be closed by a lid member such as a cap, the plunger rod 23 may penetrate the lid member, and a vent hole may be formed in the lid member.
Further, the flexible tube 60 may be omitted, and the water intake filter 10 may be directly connected to the connection port 33 of the sensor housing unit 30. The same applies to the flexible tube 70, and the connection port 34 of the sensor housing 30 and the water intake port 25 of the suction device 20 may be directly connected.

また、吸引機器２０を手動又は電動の揚水ポンプに変更してもよい。この場合、シリンダ２１のような採水容器がその揚水ポンプ自体に設けられていないときには、その揚水ポンプの下流側に採水容器を接続することが好ましい。そうすれば、その揚水ポンプで揚水した間隙水を採水容器に貯留することができる。   Further, the suction device 20 may be changed to a manual or electric pump. In this case, when the water sampling container such as the cylinder 21 is not provided in the pump, the water sampling container is preferably connected to the downstream side of the pump. Then, the pore water pumped by the pump can be stored in the water sampling container.

また、取水フィルタ１０を河川、湖、沼、池、海、井戸、受水槽等の原位置（測定地）の水に浸漬し、吸引機器２０によって原位置の水を揚水し、その揚水した水の水質の指標をセンサ部４０及び分析機本体５０によって測定してもよい。   Further, the intake filter 10 is immersed in the water at the original position (measurement site) such as a river, lake, swamp, pond, sea, well, water receiving tank, etc., and the original water is pumped up by the suction device 20, and the pumped water The water quality index may be measured by the sensor unit 40 and the analyzer main body 50.

上記実施形態では、栓２６，３５を開けた状態でプランジャ２２をシリンダ２１の開口側（図中上方）へ引き、間隙水をハウジング３１及びシリンダ２１に吸い上げたが、次のようにしてもよい。つまり、まず栓２６を開けて、栓３５を閉じる。次に、プランジャ２２をシリンダ２１の開口側へ引くと、ハウジング３１内の空気が吸引機器２０のシリンダ２１に吸引されるので、ハウジング３１内が負圧になる。そして、プランジャ２２を引いた状態を保って、栓３５を開栓する。そうすると、ハウジング３１内の負圧によって地盤９０中の間隙水が取水フィルタ１０に吸引されて、センサ収容部３０のハウジング３１内に流入する。更にプランジャロッド２３を引くことによって、間隙水をハウジング３１内に充填するとともに、シリンダ２１内に吸引する。所定量の間隙水がシリンダ２１内に貯留されたら、上記実施形態の場合と同様に、プランジャ２２及びプランジャロッド２３の引きを終了し、すぐに栓２６，３５を閉め、その後、分析機本体５０を操作することによってセンサ収容部３０内の間隙水の水資指標をセンサ部４０によって検知する。   In the above embodiment, the plunger 22 is pulled to the opening side of the cylinder 21 (upward in the figure) with the plugs 26 and 35 opened, and the gap water is sucked up into the housing 31 and the cylinder 21. . That is, the plug 26 is first opened and the plug 35 is closed. Next, when the plunger 22 is pulled toward the opening side of the cylinder 21, the air in the housing 31 is sucked into the cylinder 21 of the suction device 20, so that the inside of the housing 31 becomes negative pressure. Then, the plug 35 is opened while keeping the plunger 22 pulled. If it does so, the pore water in the ground 90 will be attracted | sucked by the water intake filter 10 by the negative pressure in the housing 31, and will flow in in the housing 31 of the sensor accommodating part 30. FIG. Further, by pulling the plunger rod 23, the gap water is filled in the housing 31 and sucked into the cylinder 21. When a predetermined amount of interstitial water is stored in the cylinder 21, the pulling of the plunger 22 and the plunger rod 23 is terminated and the plugs 26 and 35 are immediately closed, and then the analyzer main body 50, as in the case of the above embodiment. Is operated, and the water resource index of the pore water in the sensor housing 30 is detected by the sensor 40.

１…水質分析装置， １０…取水フィルタ（取水部）， ２０…吸引機器， ３０…センサ収容部， ３１…ハウジング， ３２…止水材 ４０…センサ部， ５０…分析機本体， ９０…地盤   DESCRIPTION OF SYMBOLS 1 ... Water quality analyzer, 10 ... Water intake filter (water intake part), 20 ... Suction apparatus, 30 ... Sensor accommodating part, 31 ... Housing, 32 ... Water stop material 40 ... Sensor part, 50 ... Analyzer main body, 90 ... Ground

Claims (7)

取水部と、
前記取水部に接続されたセンサ収容部と、
前記センサ収容部に接続され、前記センサ収容部内の空気を吸引する吸引機器と、
前記センサ収容部に収容され、水質指標を検知するセンサ部と、を備える水質分析装置。 The intake section,
A sensor housing connected to the water intake;
A suction device connected to the sensor housing portion for sucking air in the sensor housing portion;
A water quality analyzer comprising: a sensor unit that is housed in the sensor housing unit and detects a water quality index. 前記センサ収容部が、有底筒状に設けられたハウジングと、前記ハウジングの開口に周方向に設けられた止水材と、を有し、
前記センサ部が前記止水材に嵌め込まれた状態で前記ハウジングの開口に挿入され、前記止水材が前記センサ部と前記ハウジングとの間に挟み込まれている請求項１に記載の水質分析装置。 The sensor accommodating portion has a housing provided in a bottomed cylindrical shape, and a water stop material provided in a circumferential direction in the opening of the housing,
The water quality analyzer according to claim 1, wherein the sensor unit is inserted into the opening of the housing in a state where the sensor unit is fitted in the water blocking material, and the water blocking material is sandwiched between the sensor unit and the housing. . 前記ハウジングが透明材からなる請求項２に記載の水質分析装置。   The water quality analyzer according to claim 2, wherein the housing is made of a transparent material. 前記取水部から前記センサ収容部までの経路に設けられ、その経路を開閉可能な栓を更に備える請求項１から３の何れか一項に記載の水質分析装置。   The water quality analyzer according to any one of claims 1 to 3, further comprising a plug that is provided in a path from the water intake section to the sensor housing section and that can open and close the path. 前記取水部が水を濾過するフィルタである請求項１から４の何れか一項に記載の水質分析装置。   The water quality analyzer according to any one of claims 1 to 4, wherein the water intake unit is a filter that filters water. 前記吸引機器がシリンジである請求項１から５の何れか一項に記載の水質分析装置。   The water quality analyzer according to any one of claims 1 to 5, wherein the suction device is a syringe. 請求項１から６の何れか一項に記載の水質分析装置を用いた水質分析方法であって、
前記取水部を測定地に設置する設置工程と、
前記設置工程後に、前記吸引機器により前記センサ収容部内の空気を吸引することによって前記測定地の水を前記センサ収容部内に吸い上げる吸い上げ工程と、
前記吸い上げ工程によって前記センサ収容部に吸い上げられた水の水質指標を前記センサ部によって検知する検知工程と、を備える水質分析方法。 A water quality analysis method using the water quality analyzer according to any one of claims 1 to 6,
An installation step of installing the water intake unit at a measurement site;
After the installation step, a suction step of sucking up water in the measurement site into the sensor housing portion by sucking air in the sensor housing portion by the suction device;
A water quality analysis method comprising: a detection step of detecting, by the sensor unit, a water quality index of the water sucked into the sensor housing unit by the suction step.
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