JP2000263030A - Method for purifying soil polluted with volatile compound - Google Patents
Method for purifying soil polluted with volatile compoundInfo
- Publication number
- JP2000263030A JP2000263030A JP11070069A JP7006999A JP2000263030A JP 2000263030 A JP2000263030 A JP 2000263030A JP 11070069 A JP11070069 A JP 11070069A JP 7006999 A JP7006999 A JP 7006999A JP 2000263030 A JP2000263030 A JP 2000263030A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- air
- permeable
- impermeable
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ジクロロメタン、
四塩化炭素、１，２−ジクロロエタン、１，１−ジクロ
ロエチレン、シス−１，２−ジクロロエチレン、１，
１，１−トリクロロエタン、１，１，２−トリクロロエ
タン、トリクロロエチレン、テトラクロロエチレン、ベ
ンゼン及び１，３−ジクロロプロペン等の揮発性化合物
に汚染された地盤を浄化処理する揮発性化合物による汚
染土壌の浄化処理方法に関する。TECHNICAL FIELD The present invention relates to dichloromethane,
Carbon tetrachloride, 1,2-dichloroethane, 1,1-dichloroethylene, cis-1,2-dichloroethylene, 1,
Method for purifying soil contaminated with volatile compounds for purifying ground contaminated with volatile compounds such as 1,1-trichloroethane, 1,1,2-trichloroethane, trichloroethylene, tetrachloroethylene, benzene and 1,3-dichloropropene About.
【０００２】[0002]
【従来の技術】従来この種の揮発性化合物に汚染された
土壌の浄化処理には、土壌ガス吸引法がある。この従来
の土壌ガス吸引法は、不飽和帯に存在する対象物質を強
制的に吸引するものであり、ボーリングにより地盤中に
吸引井戸を設置し、真空ポンプによって吸引用井戸内を
０．５気圧程度に減圧し、気化した対象物を吸引井戸内
に集め、地上に導いて土壌ガス中の対象物を活性炭など
の吸着材に吸着させるなどの方法によって処理するもの
である。対象物による汚染が帯水層にまで達している場
合には、土壌ガスと同時に揚水して処理する方法が採ら
れている。2. Description of the Related Art Conventionally, there is a soil gas suction method for purifying soil contaminated with volatile compounds of this kind. In this conventional soil gas suction method, a target substance present in an unsaturated zone is forcibly sucked, a suction well is installed in the ground by boring, and a pressure of 0.5 atm is set in the suction well by a vacuum pump. The pressure is reduced to a certain degree, the vaporized target is collected in a suction well, and guided to the ground to treat the target in soil gas with an adsorbent such as activated carbon. In the case where the contamination of the target reaches the aquifer, a method is adopted in which the water is simultaneously pumped and treated with the soil gas.
【０００３】[0003]
【発明が解決しようとする課題】このような従来の方法
は、水や空気を、単に地盤中から吸引除去させるのみで
あるため、地盤中に水や空気の通り道ができ、浄化効率
が低く、汚染除去に数年〜十数年の長期間を要するとい
う問題があった。In such a conventional method, since water and air are merely sucked and removed from the ground, water and air can pass through the ground, and the purification efficiency is low. There is a problem that a long period of several years to several tens of years is required for decontamination.
【０００４】本発明はこのような従来の問題に鑑み、短
期間で効率よく、経済的に浄化処理が可能な揮発性化合
物による汚染土壌の浄化処理方法の提供を目的としたも
のである。The present invention has been made in view of such conventional problems, and has as its object to provide a method for purifying contaminated soil with a volatile compound that can be efficiently and economically purified in a short period of time.
【０００５】[0005]
【課題を解決するための手段】上述の如き従来の問題を
解決し、所期の目的を達成するための本発明の特徴は、
揮発性化合物に汚染された地盤中に、地表面より地中に
向けて縦向き通気性柱状部を所定の間隔を隔てて多数設
置するとともに、該地表面に前記各縦向き通気性柱状部
に通じる水平通気層を設置し、該水平通気層の表面を不
透気性材料で被覆し、前記通気性柱状部及び通気層内を
減圧して排気することを特徴としてなる揮発性化合物に
よる汚染土壌の浄化処理方法にある。SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
In the ground contaminated with volatile compounds, a large number of vertically permeable columnar portions are installed at predetermined intervals from the ground surface toward the ground, and each of the vertically permeable columnar portions is provided on the ground surface. A horizontal ventilation layer that communicates is installed, the surface of the horizontal ventilation layer is covered with an air-impermeable material, and the inside of the ventilation column and the ventilation layer is depressurized and exhausted. Purification treatment method.
【０００６】尚、浄化処理しようとする地盤周囲を囲む
配置に地表面から地中に向けて糊材を土中に混合した不
透気層を設置し、該該不透気層内に不透気性材料の周縁
部を埋設すること、浄化しようとする地盤中に１若しく
は複数の揚水井を形成し、減圧に先立って該地盤中の地
下水位を汚染土壌より低い高さまで下げること、浄化し
ようとする地盤を囲む配置に、地表から地中の不透水性
地盤に到る不通気層を設けること、及び、浄化処理しよ
うとする地盤中に炭酸水を注入した後、減圧により排気
することがが好ましい。[0006] An air-impermeable layer in which a paste material is mixed in the soil is installed from the ground surface to the ground in an arrangement surrounding the periphery of the ground to be purified, and the air-impermeable layer is provided in the air-impermeable layer. Burying the periphery of the aerobic material, forming one or more pumping wells in the ground to be purified, lowering the groundwater level in the ground to a level lower than the contaminated soil, and purifying the ground prior to decompression. It is possible to provide an impermeable layer from the surface of the ground to the impermeable ground in the ground, and to inject carbonated water into the ground to be purified and then exhaust it by reducing the pressure in the arrangement surrounding the ground to be cleaned. preferable.
【０００７】[0007]
【発明の実施の形態】次に本発明の実施の形態を図面に
ついて説明する。Embodiments of the present invention will now be described with reference to the drawings.
【０００８】図１は本発明方法の実施の一例を示してお
り、同図中１は浄化処理しようとする汚染地盤である。
この汚染地盤１の表面より、地中に向けて多数の縦向き
通気性柱状部２，２……を所定の間隔毎に設置する。こ
の通気性柱状部２は所謂グラベルドレーンと同様に、地
盤表面より地中に向けて穿孔し、その孔内に砂等の通気
性材３を充填することにより形成する。充填する通気性
材３としては通気抵抗を少なくするためケイ砂２号程度
の粒径のものを使用するまた、その深さは、汚染されて
いる土壌深さと同じ深さまでとする。また、ドレーン
は、一般的なペーパードレーンあるいはプラスチックド
レーンを使用してもよい。FIG. 1 shows an embodiment of the method of the present invention. In FIG. 1, reference numeral 1 denotes a contaminated ground to be purified.
From the surface of the contaminated ground 1, a number of vertically permeable columnar parts 2, 2,... Are installed at predetermined intervals toward the ground. Like the so-called gravel drain, the permeable columnar portion 2 is formed by piercing from the ground surface toward the ground and filling the permeable material 3 such as sand in the hole. As the gas permeable material 3 to be filled, a material having a particle size of about silica sand No. 2 is used in order to reduce the air flow resistance. As the drain, a general paper drain or a plastic drain may be used.
【０００９】このようにして地表面に通気性柱状部２を
露出させ、その上に水平通気層４を設置するるこの水平
通気層４も前述の通気性柱状部２と同様の、ケイ砂等の
通気性材３を層状に敷設することにより設置する。In this manner, the permeable columnar portion 2 is exposed on the ground surface, and the horizontal permeable layer 4 is provided thereon. The horizontal permeable layer 4 is also made of silica sand or the like, similar to the aforementioned permeable columnar portion 2. Is provided by laying the air permeable material 3 in layers.
【００１０】この水平通気層４内には、通気性材３を透
過しない大きさの孔を多数開けた多孔管からなる吸気管
５を埋設しておく。In the horizontal ventilation layer 4, an intake pipe 5 made of a perforated pipe having a large number of holes sized so as not to transmit the permeable material 3 is embedded.
【００１１】次いで、上述した水平通気層４の上面を合
成樹脂シート等の不透気性材料６を持って被覆する。こ
の不透気性材料６の周縁部は、処理しようとする汚染地
盤１の外側の地盤内に埋め込む、この埋め込みに際し、
地盤を掘削し、その土砂に糊材を混合させた埋め戻し土
砂７により不透気層を形成し、その不透気層内に不透気
性材料６の縁部６ａを埋め込む。これによって不透気性
材料６の周縁部を不透気、不通水状態に遮蔽する。Next, the upper surface of the horizontal ventilation layer 4 is covered with an air-permeable material 6 such as a synthetic resin sheet. The periphery of the air-impermeable material 6 is embedded in the ground outside the contaminated ground 1 to be treated.
The ground is excavated, an impermeable layer is formed by backfilling earth and sand mixed with a glue material, and the edge 6a of the impermeable material 6 is embedded in the impermeable layer. Thereby, the peripheral portion of the air-impermeable material 6 is shielded from being impermeable and impermeable.
【００１２】糊材としては、メチルセルロース、ＣＭ
Ｃ、ヒドロキシエチルセルロース等のセルロースエステ
ル類、グアガム、キサンタンガム、アルギン酸塩、アル
ギン酸プロピレングリコールエステル、デンプングリコ
ール酸ナトリウム、デンプンリン酸エステルナトリウ
ム、デンプン、プルラン、ポリアクリルアマイド、ポリ
アクリル酸塩、アルギン、モンモリロナイト等が使用で
きる。As the paste material, methyl cellulose, CM
C, cellulose esters such as hydroxyethylcellulose, guar gum, xanthan gum, alginate, propylene glycol alginate, sodium starch glycolate, sodium starch phosphate, starch, pullulan, polyacrylamide, polyacrylate, algin, montmorillonite, etc. Can be used.
【００１３】モンモリロナイト等無機系糊材を用いた場
合は、浄化後もその性質が残り、水捌けが悪い等の問題
が残る。When an inorganic paste such as montmorillonite is used, its properties remain even after purification, and problems such as poor drainage remain.
【００１４】有機系糊材を用いた場合は、浄化後生分解
されるため問題は生じない。有機系糊材の種類によって
は、浄化中に分解が進行する場合があるため、適宜防腐
剤を使用することが好ましい。When an organic paste is used, there is no problem because it is biodegraded after purification. Depending on the type of organic paste material, decomposition may proceed during purification, so it is preferable to use a preservative as appropriate.
【００１５】このようにして被覆の後、通気層４内を減
圧する。減圧に際しては、吸気管５に減圧ポンプ８を連
結し、０．０１ｋｇ／ｃｍ２程度まで減圧する。これに
よって各通気性柱状部２を通して地盤全体が減圧され、
地盤中の揮発性化合物は蒸発し、土壌間ガスとともに排
出される。例えば水は０．０３ｋｇ／ｃｍ２圧力下で沸
点が２０℃であるが、トリクロロエチレンは０．１ｋｇ
／ｃｍ２の圧力下で沸点が２０℃であり、常温において
０．０１ｋｇ／ｃｍ２まで減圧することにより、トリク
ロロエチレンは短時間で蒸発し、土壌間ガスとともに排
出される。After the coating in this manner, the inside of the ventilation layer 4 is reduced in pressure. At the time of pressure reduction, a pressure reduction pump 8 is connected to the intake pipe 5 to reduce the pressure to about 0.01 kg / cm 2 . As a result, the entire ground is depressurized through each of the permeable columnar portions 2,
Volatile compounds in the ground evaporate and are discharged with the intersoil gas. For example, water has a boiling point of 20 ° C. under a pressure of 0.03 kg / cm 2, whereas trichloroethylene has a boiling point of 0.1 kg.
/ Boiling under a pressure of cm 2 is 20 ° C., under reduced pressure at room temperature to 0.01 kg / cm 2, trichlorethylene evaporates in a short time, and is discharged together with the soil between gas.
【００１６】また、図２に示すように、浄化処理しよう
とする地盤の周囲を囲む配置に、地表面から、地下の不
透水性地盤１１に到る不通気層１２を構築し、その内側
の地盤１中に前述と同様の注揚水井９、通気性柱状部２
及び水平通気層４を設置し、それらの上側を不透気性材
料６で覆い、その周縁部を不透気層の外側にて前述と同
様に糊材を混入させた埋め戻し土砂７による不透気層に
よって埋め込み、遮蔽するようにしても良く、この場合
には、処理地盤１全域が不通気性の材料によって遮蔽さ
れるため、排気によって地盤中を高い減圧度に維持する
ことが容易となる。As shown in FIG. 2, an impermeable layer 12 extending from the ground surface to the impermeable ground 11 under the ground is constructed in an arrangement surrounding the periphery of the ground to be purified. Pumping well 9 and permeable column 2 similar to those described above in ground 1
And a horizontal air-permeable layer 4 is provided, the upper side of which is covered with an air-impermeable material 6, and the periphery thereof is impermeable to the backfill soil 7 mixed with a glue material outside the air-impermeable layer as described above. It may be embedded and shielded by an air layer. In this case, since the entire area of the treated ground 1 is shielded by the impermeable material, it is easy to maintain the inside of the ground at a high degree of decompression by exhaustion. .
【００１７】尚、この実施例において、通気性柱状部２
の設置と同時に注揚水井９を１若しくは複数形成してお
き、減圧に先立って地盤１中の水を抜き、地下水の水位
１０を汚染土壌深さ以下まで下げることによって、地盤
１全体に亘って揮発性化合物を短時間に蒸発させること
ができる。In this embodiment, the air-permeable columnar portion 2
One or more pumping wells 9 are formed at the same time as the installation, and water is drained from the ground 1 prior to depressurization, and the water level 10 of the groundwater is lowered to a depth equal to or less than the depth of the contaminated soil. Volatile compounds can be evaporated in a short time.
【００１８】更に、図２に示すように浄化処理しようと
する地盤１の周囲を不通気層で遮蔽し、注揚水井９を通
して排水し、地下水位を汚染土壌より深い位置まで低下
させた後、注揚水井９から炭酸水を注入し、地盤中の地
下水位を段階的に上昇させ、一定高さ上昇毎に、減圧操
作を行うようにしても良く、この場合には、減圧毎に、
地盤中の炭酸水から二酸化炭素ガスが発生し、曝気する
状態となり、土壌粒子間を透過し、砂や土を構成してい
る鉱物質の表面を僅かに侵食するリンス効果が促進さ
れ、土中に含まれている揮発性物質の遊離が促進される
とともに、水中のトリクロロエチレンの揮発が促進され
る。Further, as shown in FIG. 2, the periphery of the ground 1 to be purified is shielded with an impermeable layer, drained through the pumping well 9, and the groundwater level is lowered to a position deeper than the contaminated soil. Carbonated water may be injected from the pumping well 9 to raise the groundwater level in the ground in a stepwise manner, and a depressurization operation may be performed at every constant height increase. In this case,
Carbon dioxide gas is generated from the carbonated water in the ground and aerated, causing it to permeate between soil particles and promote the rinsing effect of slightly eroding the surface of sand and the minerals that make up the soil. The release of volatile substances contained in water is promoted, and the volatilization of trichlorethylene in water is promoted.
【００１９】[0019]
【発明の効果】上述のように、本発明に係る揮発性化合
物による汚染土壌の浄化処理方法においては、揮発性化
合物に汚染された地盤中に、地表面より地中に向けて縦
向き通気性柱状部を所定の間隔を隔てて多数設置すると
ともに、該地表面に前記各縦向き通気性柱状部に通じる
水平通気層を設置し、該水平通気層の表面を不透気性材
料で被覆し、前記通気層内を減圧して排気するようにし
たことによって、処理しようとする地盤全体を迅速に減
圧させることができ、短期間に効率のよい浄化処理がな
される。As described above, in the method for purifying contaminated soil with a volatile compound according to the present invention, the vertically contaminated soil is conveyed vertically from the ground surface to the ground. A large number of columnar portions are installed at predetermined intervals, and a horizontal ventilation layer communicating with each of the vertically permeable columnar portions is provided on the ground surface, and the surface of the horizontal ventilation layer is covered with an impermeable material, By evacuating and depressurizing the inside of the ventilation layer, the entire ground to be treated can be quickly depressurized, and efficient purification can be performed in a short period of time.
【００２０】また、浄化処理しようとする地盤周囲を囲
む配置に地表面から地中に向けて糊材を土中に混合した
不透気層を設置し、該該不透気層内に不透気性材料の周
縁部を埋設することにより、簡単に不透気性材料の周縁
の遮蔽ができ、処理後においても不透気性材料の除去が
容易であり、経時的に流失し後処理が不要となる。In addition, an air-impermeable layer in which a paste material is mixed in the soil is installed from the ground surface to the ground in an arrangement surrounding the periphery of the ground to be purified, and the air-impermeable layer is provided in the air-impermeable layer. By burying the peripheral portion of the gas-impermeable material, the peripheral edge of the air-impermeable material can be easily shielded, and the air-impermeable material can be easily removed even after the treatment, so that it is washed away with time and post-treatment is not required. .
【００２１】更に、浄化しようとする地盤中に１若しく
は複数の揚水井を形成し、減圧に先立って該地盤中の地
下水位を汚染土壌より低い高さまで下げることにより、
被処理地盤全体を同時に浄化処理することが可能とな
り、効率の良い処理ができる。Further, by forming one or more pumping wells in the ground to be purified and lowering the groundwater level in the ground to a level lower than the contaminated soil prior to decompression,
It becomes possible to simultaneously purify the entire ground to be treated, and thus to perform an efficient treatment.
【００２２】更に、浄化しようとする地盤を囲む配置
に、地表から地中の不透水性地盤に到る不通気層を設け
ることにより、例えば砂質地盤等のように、周囲の地盤
から空気が侵入するような地盤であっても、高い減圧状
態が確実に得られ、支障なく浄化処理をなし得る。Further, by providing an air-impermeable layer extending from the surface of the ground to an impermeable ground in the ground in an arrangement surrounding the ground to be purified, air from the surrounding ground such as a sandy ground is provided. Even in the case of the invading ground, a high decompression state can be reliably obtained, and the purification treatment can be performed without any trouble.
【００２３】更に、浄化処理しようとする地盤中に炭酸
水を注入した後、減圧により排気することにより、減圧
毎に、地盤中の炭酸水から二酸化炭素ガスが発生し、こ
れが土壌粒子間を透過し、短時間で高い処理効果が得ら
れる。Further, after injecting carbonated water into the ground to be treated for purification, the carbon dioxide gas is generated from the carbonated water in the ground every time the pressure is reduced by evacuating under reduced pressure. Thus, a high processing effect can be obtained in a short time.
【図１】本発明方法の実施の一例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the method of the present invention.
【図２】本発明の他の実施例を示す断面図である。FIG. 2 is a sectional view showing another embodiment of the present invention.
１ 汚染地盤 ２ 通気性柱状部 ３ 通気性材 ４ 水平通気層 ５ 吸気管 ６ 不透気性材料 ６ａ 縁部 ７ 埋め戻し土砂 ８ 減圧ポンプ ９ 注揚水井 １０ 地下水の水位 １１ 不透水性地盤 １２ 不通気層 DESCRIPTION OF SYMBOLS 1 Contaminated ground 2 Air-permeable columnar part 3 Air-permeable material 4 Horizontal air-permeable layer 5 Intake pipe 6 Air-impermeable material 6a Edge 7 Backfilled soil 8 Decompression pump 9 Pumping well 10 Groundwater level 11 Water-impermeable ground 12 Impermeable layer
Claims (5)
面より地中に向けて縦向き通気性柱状部を所定の間隔を
隔てて多数設置するとともに、該地表面に前記各縦向き
通気性柱状部に通じる水平通気層を設置し、該水平通気
層の表面を不透気性材料で被覆し、前記通気性柱状部及
び通気層内を減圧して排気することを特徴としてなる揮
発性化合物による汚染土壌の浄化処理方法。1. A large number of vertically permeable columnar portions are provided at predetermined intervals in a ground contaminated with volatile compounds from the ground surface toward the ground, and each of the vertically permeable columnar portions is provided on the ground surface. A volatile air-permeable layer connected to the air-permeable columnar portion, the surface of the horizontal air-permeable layer is covered with an air-impermeable material, and the inside of the air-permeable columnar portion and the air-permeable layer is depressurized and exhausted. A method for purifying contaminated soil with a compound.
に地表面から地中に向けて糊材を土中に混合した不透気
層を設置し、該該不透気層内に不透気性材料の周縁部を
埋設する請求項１に記載の揮発性化合物による汚染土壌
の浄化処理方法。2. An air-impermeable layer in which a glue material is mixed in the soil from the ground surface to the ground is installed in an arrangement surrounding the periphery of the ground to be purified, and the air-impermeable layer is provided in the air-impermeable layer. The method for purifying contaminated soil with a volatile compound according to claim 1, wherein the peripheral portion of the aerobic material is buried.
の揚水井を形成し、減圧に先立って該地盤中の地下水位
を汚染土壌より低い高さまで下げる請求項１若しくは２
に記載の揮発性化合物による汚染土壌の浄化処理方法。3. The method according to claim 1, wherein one or more pumping wells are formed in the ground to be purified, and the groundwater level in the ground is lowered to a level lower than the contaminated soil prior to decompression.
3. A method for purifying contaminated soil with a volatile compound according to item 1.
から地中の不透水性地盤に到る不通気層を設ける請求項
１，２若しくは３に記載の揮発性化合物による汚染土壌
の浄化処理方法。4. Purification of contaminated soil by a volatile compound according to claim 1, 2 or 3, wherein an impermeable layer extending from the ground surface to an impermeable ground in the ground is provided in an arrangement surrounding the ground to be purified. Processing method.
入した後、減圧により排気する請求項１〜３若しくは４
に記載の揮発性化合物による汚染土壌の浄化処理方法。5. The method according to claim 1, further comprising the steps of: injecting carbonated water into the ground to be purified;
3. A method for purifying contaminated soil with a volatile compound according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07006999A JP4110545B2 (en) | 1999-03-16 | 1999-03-16 | Purification method for contaminated soil with volatile compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07006999A JP4110545B2 (en) | 1999-03-16 | 1999-03-16 | Purification method for contaminated soil with volatile compounds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000263030A true JP2000263030A (en) | 2000-09-26 |
| JP4110545B2 JP4110545B2 (en) | 2008-07-02 |
Family
ID=13420895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07006999A Expired - Lifetime JP4110545B2 (en) | 1999-03-16 | 1999-03-16 | Purification method for contaminated soil with volatile compounds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4110545B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205047A (en) * | 2001-01-10 | 2002-07-23 | Nippon Kokan Light Steel Kk | Method for removing contaminant |
| JP2002346539A (en) * | 2001-05-28 | 2002-12-03 | Nippon Kokan Light Steel Kk | Method for cleaning polluted soil |
| JP2003236522A (en) * | 2001-12-14 | 2003-08-26 | Koken Boring Mach Co Ltd | Non-destructive geological pollution purification method and pressure bulkhead used for the same |
| JP2005161183A (en) * | 2003-12-02 | 2005-06-23 | Fudo Constr Co Ltd | Method for decontaminating contaminated ground |
| JP2015094739A (en) * | 2013-11-14 | 2015-05-18 | 健夫 鈴木 | Investigation method of contaminated soil |
| CN106703085A (en) * | 2016-12-22 | 2017-05-24 | 上海岩土工程勘察设计研究院有限公司 | Water collection system for polluted soil isolation and working method thereof |
| CN107059939A (en) * | 2016-12-22 | 2017-08-18 | 上海岩土工程勘察设计研究院有限公司 | Monitoring well and film attachment structure in a kind of isolation for Polluted Soil |
-
1999
- 1999-03-16 JP JP07006999A patent/JP4110545B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002205047A (en) * | 2001-01-10 | 2002-07-23 | Nippon Kokan Light Steel Kk | Method for removing contaminant |
| JP2002346539A (en) * | 2001-05-28 | 2002-12-03 | Nippon Kokan Light Steel Kk | Method for cleaning polluted soil |
| JP2003236522A (en) * | 2001-12-14 | 2003-08-26 | Koken Boring Mach Co Ltd | Non-destructive geological pollution purification method and pressure bulkhead used for the same |
| JP2005161183A (en) * | 2003-12-02 | 2005-06-23 | Fudo Constr Co Ltd | Method for decontaminating contaminated ground |
| JP2015094739A (en) * | 2013-11-14 | 2015-05-18 | 健夫 鈴木 | Investigation method of contaminated soil |
| CN106703085A (en) * | 2016-12-22 | 2017-05-24 | 上海岩土工程勘察设计研究院有限公司 | Water collection system for polluted soil isolation and working method thereof |
| CN107059939A (en) * | 2016-12-22 | 2017-08-18 | 上海岩土工程勘察设计研究院有限公司 | Monitoring well and film attachment structure in a kind of isolation for Polluted Soil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4110545B2 (en) | 2008-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2618579B2 (en) | Method and apparatus for removing contaminants | |
| US5332333A (en) | Vacuum extraction method and apparatus for removing volatile contaminants from the vadose layer of contaminated earth | |
| WO2012108369A1 (en) | Soil improvement method | |
| US5387057A (en) | Contaminated ground site remediation system | |
| US20170291202A1 (en) | Soil gas and groundwater remediation system and method | |
| JP5205010B2 (en) | In-situ purification method for contaminated groundwater | |
| JP4110545B2 (en) | Purification method for contaminated soil with volatile compounds | |
| JP4923472B2 (en) | Water wash structure for contaminated soil and water wash method using the same | |
| US7704014B2 (en) | Process for removing contaminants from contaminated soil | |
| JP5243627B2 (en) | Ground improvement method | |
| US9827604B2 (en) | Groundwater remediation system and method | |
| US7618547B2 (en) | Groundwater treatment system with air injection into vadose zone | |
| JP3295741B2 (en) | How to clean contaminated soil | |
| JP2006043602A (en) | Treatment system for contaminated soil | |
| US5509760A (en) | Method of rapid purging of contaminants from a contaminated area of soil or ground water | |
| JP4375592B2 (en) | Soil and groundwater purification methods | |
| JP3930785B2 (en) | Contaminated strata purification method and polluted strata purification system used therefor | |
| JPH07136631A (en) | Cleaning of contaminated soil | |
| JP3714855B2 (en) | Purification method for contaminated ground combined with ground reinforcement | |
| JP2002301465A (en) | Cleaning system for soil and ground water polluted with volatile organic compound | |
| JP2002001296A (en) | Method for decontaminating contaminated ground and strengthening ground at the same time | |
| JP3841339B2 (en) | Viscous ground purification structure and purification method | |
| JP2003154356A (en) | Pumping aeration type apparatus and method for purifying ground water | |
| CN214571065U (en) | Sewage treatment system for underground water circulation well | |
| JP2003033756A (en) | Decontamination method for hardly water-permeable ground |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20041220 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060314 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20071126 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20071204 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20071226 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080311 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080328 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110418 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140418 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140418 Year of fee payment: 6 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |