JP7638486B2 - Injection inner pipe, injection device equipped with same, and purification method - Google Patents
Injection inner pipe, injection device equipped with same, and purification method Download PDFInfo
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- JP7638486B2 JP7638486B2 JP2020157988A JP2020157988A JP7638486B2 JP 7638486 B2 JP7638486 B2 JP 7638486B2 JP 2020157988 A JP2020157988 A JP 2020157988A JP 2020157988 A JP2020157988 A JP 2020157988A JP 7638486 B2 JP7638486 B2 JP 7638486B2
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- injection
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- contaminated soil
- purification
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- 238000002347 injection Methods 0.000 title claims description 58
- 239000007924 injection Substances 0.000 title claims description 58
- 238000000746 purification Methods 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 15
- 239000007788 liquid Substances 0.000 claims description 29
- 239000002689 soil Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 2
- 239000011538 cleaning material Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Description
本願発明は、汚染された土壌（汚染土壌）の浄化技術に関するものである。 This invention relates to a technology for purifying contaminated soil (polluted soil).
薬液注入工法の一種である「ダブルパッカ工法」を応用した浄化工法はすでに開発・実施されている（特許文献１など）。 A purification method that applies the "double packer method," a type of chemical injection method, has already been developed and implemented (see Patent Document 1, etc.).
しかし、ダブルパッカー工法は、一般的に１度に１種類の浄化材しか注入することができない。もし、一度に二種類の浄化材を注入できれば、フェントン浄化材（過酸化水素水＋第一硫酸鉄）の注入が一工程で可能になる。また、二種類の浄化材を同時に注入できれば、他の浄化材への応用が可能になる。 However, the double packer method generally only allows the injection of one type of purification material at a time. If two types of purification materials could be injected at once, it would be possible to inject Fenton purification material (hydrogen peroxide + ferrous sulfate) in one process. Furthermore, if two types of purification materials could be injected simultaneously, it would be possible to apply this method to other purification materials.
そこで、本願発明者は、鋭意試験・研究を進め、ダブルパッカ工法を応用した新たな浄化技術を完成するに至った。 Therefore, the inventors of this application conducted extensive testing and research, and eventually developed a new purification technology that uses the double packer method.
第１の発明は、汚染された土壌を浄化するための注入装置を構成し、汚染土壌に形成された削孔に挿入される注入外管の中へ挿入される注入内管であって、ダブル管を内蔵し二液注入可能な内管本体と、その上下に配置されたパッカ部を膨出・収縮させるパッカ機構と、注入液を噴出させるために上下パッカ部の間に形成されたノズルと、を備え、上下パッカ部の間隔を２３ｃｍ～２７ｃｍにしたことを特徴とするものである。
ここで、「二液注入可能」の二液は、異なる液体でも同一の液体でもどちらでもよい。
第２の発明は、汚染された土壌を浄化するための注入装置を構成し、汚染土壌に形成された削孔に挿入される注入外管の中へ挿入される注入内管であって、シングル管を内蔵し一液注入可能な内管本体と、その上下に配置されたパッカ部を膨出・収縮させるパッカ機構と、注入液を噴出させるために上下パッカ部の間に形成されたノズルと、を備え、上下パッカ部の間隔を２３ｃｍ～２７ｃｍにしたことを特徴とするものである。
第３の発明は、上記第１又は第２の発明に係る注入内管を備えたことを特徴とする注入装置である。
第４の発明は、汚染された土壌を浄化するための浄化工法であって、汚染土壌に形成された削孔に挿入される注入外管と、ダブル管を内蔵し二液注入可能な内管本体とその上下に配置されたパッカ部を膨出・収縮させるパッカ機構と注入液を噴出させるために上下パッカ部の間に形成されたノズルとを備えて注入外管の中へ挿入される注入内管と、を使用し、注入内管の上下パッカ部の間隔を２３ｃｍ～２７ｃｍにして注入外管内をステップアップしながら注入作業を繰り返し、汚染土壌を浄化することを特徴とするものである。
第５の発明は、汚染された土壌を浄化するための浄化工法であって、汚染土壌に形成された削孔に挿入される注入外管と、シングル管を内蔵し一液注入可能な内管本体とその上下に配置されたパッカ部を膨出・収縮させるパッカ機構と注入液を噴出させるために上下パッカ部の間に形成されたノズルとを備えて注入外管の中へ挿入される注入内管と、を使用し、注入内管の上下パッカ部の間隔を２３ｃｍ～２７ｃｍにして注入外管内をステップアップしながら注入作業を繰り返し、汚染土壌を浄化することを特徴とするものである。
The first invention constitutes an injection device for purifying contaminated soil, and is characterized in that it comprises an inner injection tube inserted into an outer injection tube which is inserted into a drilled hole formed in the contaminated soil, the inner tube body incorporating a double tube and capable of injecting two liquids, a packer mechanism which expands and contracts packer parts arranged above and below the inner tube, and a nozzle formed between the upper and lower packer parts for spraying the injection liquid, the spacing between the upper and lower packer parts being 23 cm to 27 cm.
Here, the two liquids in "two liquids pourable" may be either different liquids or the same liquid.
The second invention constitutes an injection device for purifying contaminated soil, and is characterized in that it comprises an inner injection tube inserted into an outer injection tube which is inserted into a hole formed in the contaminated soil, the inner tube body incorporating a single tube and capable of injecting a single liquid, a packer mechanism for expanding and contracting packer parts arranged above and below the inner tube, and a nozzle formed between the upper and lower packer parts for spraying the injection liquid, the spacing between the upper and lower packer parts being 23 cm to 27 cm.
A third aspect of the present invention is an injection device comprising the inner injection tube according to the first or second aspect of the present invention.
The fourth invention is a purification method for purifying contaminated soil, which uses an outer injection pipe that is inserted into a drilled hole formed in the contaminated soil, and an inner injection pipe that is inserted into the outer injection pipe and is equipped with an inner pipe body that has a built-in double pipe and is capable of injecting two liquids, a packer mechanism that expands and contracts the packer parts arranged above and below the inner pipe, and a nozzle formed between the upper and lower packer parts to spray the injection liquid, and is characterized in that the distance between the upper and lower packer parts of the inner injection pipe is set to 23 cm to 27 cm, and the injection work is repeated while stepping up inside the outer injection pipe, thereby purifying the contaminated soil.
The fifth invention is a purification method for purifying contaminated soil, which uses an outer injection pipe that is inserted into a drilled hole formed in the contaminated soil, and an inner injection pipe that is inserted into the outer injection pipe and is equipped with an inner pipe body that has a single pipe built in and is capable of injecting one liquid, a packer mechanism that expands and contracts the packer parts arranged above and below the inner pipe, and a nozzle formed between the upper and lower packer parts to spray the injection liquid, and is equipped with an inner pipe that is inserted into the outer injection pipe, and is characterized in that the spacing between the upper and lower packer parts of the inner injection pipe is set to 23 cm to 27 cm, and the injection operation is repeated while stepping up inside the outer injection pipe, thereby purifying the contaminated soil.
本願発明によれば、以下のような効果を有する。
（１）現状あるパッカー付き注入内管を単純に二液注入可能な構造にしても、浄化工法には不向きである。汚染土壌の浄化にむらができて、実用的な浄化を実現できない。
（２）しかし、本願発明のように注入内管の上下パッカ部の間隔を「２５ｃｍ±２ｃｍ」にすることにより汚染土壌を細かく浄化できて、実用化に耐え得る均一な浄化を実現できる。
（３）また、これまで二種類の薬剤を用いた浄化工法では、それぞれの薬剤を別々に注入する必要があるため、浄化工程が長大となった。
（４）しかし、本願発明のように二液を同時に且つ、別々に注入できる構造であれば二つの工程を一つにまとめることが可能であり、浄化工程の短縮が実現できる。
The present invention has the following advantages.
(1) Even if the current inner injection pipe with packer is simply modified to be capable of injecting two liquids, it is not suitable for the purification method. The purification of contaminated soil will be uneven, and practical purification cannot be realized.
(2) However, by setting the distance between the upper and lower packer parts of the inner injection pipe to "25 cm±2 cm" as in the present invention, the contaminated soil can be purified finely, and uniform purification that can withstand practical use can be achieved.
(3) In addition, the purification method previously used two types of chemicals required each chemical to be injected separately, making the purification process lengthy.
(4) However, if the present invention has a structure that allows two liquids to be injected simultaneously and separately, it is possible to combine the two steps into one, thereby shortening the purification process.
本願発明の実施形態を図面に基づいて説明する。
図１は、本願発明に係る注入内管を示す説明図である。
図１に図示するように、本願発明に係る注入内管１０は、ダブル管を内蔵して二液注入可能な内管本体２０を備える。符号２１，２２は注入用ホース接続部であって、浄化材を貯蔵する液槽（図示省略）からポンプ装置（図示省略）を介して浄化材を供給する配管と接続するものである。この注入用ホース接続部から浄化に必要な浄化材二液が供給されて、内管本体２０内で混ざり合う。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view showing an inner injection tube according to the present invention.
As shown in Fig. 1, the
また、注入内管１０は、内管本体２０の上下に配置されたパッカ部３０，４０を備える。符号３１は、パッカ用ホース接続部であって、パッカ部３０，４０への流体の出入りが可能にように接続し、パッカ３０，４０を膨出・収縮させるパッカ機構を構成する。
The
さらに、内管本体２０内で混ざり合った注入液を噴出させるために上下パッカ部３０，４０の間にノズル５０が形成されている。
そして、注入内管１０は、上下パッカ部３０，４０の間隔Ｘを「２３ｃｍ～２７ｃｍ」の範囲としたことを特徴とする。
Furthermore, a
The
この間隔Ｘは、短ければ短いほど緻密な浄化を行えるが、作業効率は低下する。この間隔Ｘで削孔内をステップアップしながら注入作業を繰り返すからである。このため、本願発明者は最適な間隔Ｘを求めるべく鋭意試験・研究を行い、浄化効率と作業効率の最適な間隔Ｘとして、「２５ｃｍ±２ｃｍ」であることを導き出した。 The shorter this interval X is, the more precise the purification can be, but the lower the work efficiency. This is because the injection work is repeated while stepping up the drilled hole at this interval X. For this reason, the inventors of the present application conducted extensive testing and research to determine the optimal interval X, and derived that the optimal interval X for purification efficiency and work efficiency is "25 cm ± 2 cm."
以上は、ダブル管を内蔵して二液注入可能な内管本体２０で説明したが、シングル管を内蔵し一液注入可能な内管本体であっても、基本的に同じである。
The above has been explained using the
本願発明は、ダブルパッカ工法を使用した汚染土壌の浄化技術として、広く利用できるものである。 This invention can be widely used as a purification technology for contaminated soil using the double packer method.
１０：注入内管
２０：内管本体
２１：注入用ホース接続部
２２：注入用ホース接続部
２３：ヘッド
２４：調節管
２５：プラグ
３０：パッカ部（上部）
３１：パッカ用ホース接続部
４０：パッカ部（下部）
５０：ノズル
Ｘ：パッカ部の間隔
10: Inner injection tube 20: Inner tube body 21: Injection hose connection part 22: Injection hose connection part 23: Head 24: Adjustment tube 25: Plug 30: Packer part (upper part)
31: Packer hose connection part 40: Packer part (lower part)
50: Nozzle X: Packer spacing
Claims (3)
浄化材を貯蔵する液槽からポンプ装置を介して浄化材二液を供給するダブル管を内蔵しその内部で浄化材二液を混ざり合わせることで二液注入可能な内管本体と、その上下に配置されたパッカ部を膨出・収縮させるパッカ機構と、内管本体内で混ざり合った注入液を噴出させるために上下パッカ部の間に形成されたノズルと、を備え、
上下パッカ部の間隔を２３ｃｍ～２７ｃｍにしたことを特徴とする注入内管。 An injection device for purifying contaminated soil, comprising an injection inner tube inserted into an injection outer tube inserted into a drilled hole formed in the contaminated soil,
The device is provided with an inner pipe body incorporating a double pipe for supplying two cleaning liquids from a liquid tank storing the cleaning material via a pump device and capable of injecting the two cleaning liquids by mixing them inside the inner pipe body, a packer mechanism for expanding and contracting packer parts arranged above and below the inner pipe body, and a nozzle formed between the upper and lower packer parts for spraying the mixed injection liquid inside the inner pipe body ,
The inner injection pipe is characterized in that the interval between the upper and lower packer parts is set to 23 cm to 27 cm.
汚染土壌に形成された削孔に挿入される注入外管と、浄化材を貯蔵する液槽からポンプ装置を介して浄化材二液を供給するダブル管を内蔵しその内部で浄化材二液を混ざり合わせることで二液注入可能な内管本体とその上下に配置されたパッカ部を膨出・収縮させるパッカ機構と内管本体内で混ざり合った注入液を噴出させるために上下パッカ部の間に形成されたノズルとを備えて注入外管の中へ挿入される注入内管と、を使用し、注入内管の上下パッカ部の間隔を２３ｃｍ～２７ｃｍにして注入外管内をステップアップしながら注入作業を繰り返し、汚染土壌を浄化することを特徴とする浄化工法。 A method for purifying contaminated soil, comprising:
This purification method uses an outer injection pipe that is inserted into a drilled hole in the contaminated soil, and an inner injection pipe that is inserted into the outer injection pipe and is equipped with an inner pipe body that incorporates a double pipe that supplies two purification liquids from a liquid tank that stores purification materials via a pump device and can inject the two purification liquids by mixing them inside , a packer mechanism that expands and contracts the packer parts arranged above and below, and a nozzle formed between the upper and lower packer parts to spray the injection liquid mixed inside the inner pipe body, and a packer mechanism that expands and contracts the packer parts arranged above and below the inner pipe, and a nozzle formed between the upper and lower packer parts to spray the injection liquid mixed inside the inner pipe body, with the spacing between the upper and lower packer parts of the inner injection pipe set to 23 cm to 27 cm, and the injection work is repeated while stepping up inside the outer injection pipe to purify the contaminated soil.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003340428A (en) | 2002-05-29 | 2003-12-02 | Japan Found Eng Co Ltd | Contaminated ground purification method and water circulation device used for it |
| JP2004243229A (en) | 2003-02-14 | 2004-09-02 | Raito Kogyo Co Ltd | How to remove pollutants |
| JP2018012987A (en) | 2016-07-21 | 2018-01-25 | 強化土株式会社 | Ground injection device and ground injection method |
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2020
- 2020-09-19 JP JP2020157988A patent/JP7638486B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003340428A (en) | 2002-05-29 | 2003-12-02 | Japan Found Eng Co Ltd | Contaminated ground purification method and water circulation device used for it |
| JP2004243229A (en) | 2003-02-14 | 2004-09-02 | Raito Kogyo Co Ltd | How to remove pollutants |
| JP2018012987A (en) | 2016-07-21 | 2018-01-25 | 強化土株式会社 | Ground injection device and ground injection method |
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