JP2002011456A - Method for remediation of soil and groundwater from contamination - Google Patents
Method for remediation of soil and groundwater from contaminationInfo
- Publication number
- JP2002011456A JP2002011456A JP2000194460A JP2000194460A JP2002011456A JP 2002011456 A JP2002011456 A JP 2002011456A JP 2000194460 A JP2000194460 A JP 2000194460A JP 2000194460 A JP2000194460 A JP 2000194460A JP 2002011456 A JP2002011456 A JP 2002011456A
- Authority
- JP
- Japan
- Prior art keywords
- groundwater
- soil
- organic compounds
- hot water
- volatile organic
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、土壌や地下水汚染
の修復方法に係り、特に、揮発性有機化合物により汚染
された土壌や地下水から、汚染物質を除去して修復する
方法に関する。The present invention relates to a method for repairing soil and groundwater contamination, and more particularly to a method for removing and repairing pollutants from soil and groundwater contaminated by volatile organic compounds.
【０００２】[0002]
【従来の技術】従来から揮発性有機化合物で汚染された
土壌や地下水中に蒸気を注入して温度の上昇を図ること
により、揮発性有機化合物の気化を促進し、土壌ガスの
吸引を行うことにより、蒸気を注入しない場合に比べて
揮発性有機化合物のガス吸引効果ははるかに向上するこ
とは知られている。しかしながら、揮発性有機化合物
が、地下水中に非水溶相液（ＮＡＰＬ；Ｎｏｎ‐Ａｑｕ
ｅｏｕｓ Ｐｈａｓｅ Ｌｉｑｕｉｄ)の状態で存在す
る場合には、蒸気を注入するだけでは、地下水中のＮＡ
ＰＬが少しずつガス化されるにとどまり、飛躍的な効果
にはつながらなかった。2. Description of the Related Art Conventionally, vaporization of volatile organic compounds is promoted by injecting steam into soil or groundwater contaminated with volatile organic compounds to increase the temperature, and to suck in soil gas. Therefore, it is known that the gas suction effect of the volatile organic compound is greatly improved as compared with the case where no steam is injected. However, volatile organic compounds are present in groundwater in non-aqueous phase liquids (NAPL; Non-Aqu
In the state of eous Phase Liquid), simply injecting steam is not sufficient for NA in groundwater.
PL was gasified little by little, and did not lead to a dramatic effect.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記従来技
術に鑑み、地下水中のＮＡＰＬを簡単な手段により、効
率よく分離、除去できる土壌・地下水汚染の修復方法を
提供することを課題とする。SUMMARY OF THE INVENTION In view of the above prior art, an object of the present invention is to provide a method for repairing soil and groundwater contamination which can efficiently separate and remove NAPL in groundwater by simple means. .
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、土壌ガスの吸引及び地下水の揚水によ
り、揮発性有機化合物により汚染された土壌及び地下水
を修復する方法において、該土壌又は地下水中に温水を
注入することを特徴とする土壌・地下水汚染修復方法と
したものである。前記方法において、温水の注入は、地
下水を処理した土壌中に流入し、該流入した処理水中に
蒸気を通して行うのが良い。また、本発明では、土壌ガ
スの吸引及び地下水揚水により、揮発性有機化合物によ
り汚染された土壌及び地下水を修復する方法において、
該土壌又は地下水中に蒸気を注入して温度を上昇させ、
揮発性有機化合物の気化を促進すると同時に、地下水の
揚水を積極的に行って、その際の揚水した地下水の処理
水を蒸気注入井戸に流入させて温水とし、該温水が地下
水中を移動することによって、土壌や地下水自体の温度
上昇と地下水の流動化を図ることによる土壌・地下水汚
染修復方法としたものである。According to the present invention, there is provided a method for repairing soil and groundwater contaminated with volatile organic compounds by sucking soil gas and pumping groundwater. Alternatively, a method for remediating soil and groundwater pollution, which comprises injecting hot water into groundwater. In the above method, the hot water may be injected into the soil treated with groundwater, and steam may be passed through the treated water. Further, the present invention provides a method for repairing soil and groundwater contaminated by volatile organic compounds by suctioning soil gas and pumping groundwater,
Inject steam into the soil or groundwater to raise the temperature,
At the same time as promoting the vaporization of volatile organic compounds, actively pumping groundwater, making the treated water from the groundwater pumped into the steam injection well into hot water, and moving the hot water through the groundwater. Thus, soil and groundwater contamination is repaired by raising the temperature of soil and groundwater itself and fluidizing groundwater.
【０００５】[0005]
【発明の実施の形態】本発明は、温水又は蒸気注入と同
時に、揚水した地下水の処理水を、蒸気注入と同じ井戸
に流入させることによって、土壌や地下水自体の温度上
昇を図り、土壌や地下水に存在する揮発性有機化合物の
土壌ガス吸引効果をあげるための、ガス化促進を行うと
共に、地下水の処理水が蒸気の熱によって温水となつて
地下水中を移動し、その際積極的に地下水の揚水を行う
ことで、ＮＡＰＬが温水の移動と共に地下水中を移動し
て、ＮＡＰＬを含んだ形で地下水として揚水されやすい
状況を作ることができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention aims to raise the temperature of soil and groundwater itself by injecting treated groundwater pumped into the same well as steam injection simultaneously with hot water or steam injection. In addition to promoting gasification to enhance the effect of volatile organic compounds present in the soil gas on the soil gas, the treated water of the groundwater moves into the groundwater as warm water due to the heat of the steam. By performing pumping, it is possible to create a situation in which the NAPL moves in the groundwater together with the movement of the warm water and is easily pumped as groundwater in a form including the NAPL.
【０００６】次に、図面を用いて、本発明を詳細に説明
する。図１に、本発明の土壌・地下水汚染修復方法を実
施するための装置の概略構成図を示す。該装置は、図１
に示されるように、揮発性有機物による土壌・地下水汚
染修復現場において、土壌ガス吸引井１と地下水揚水井
２、さらに蒸気及び処理地下水流入井３の各井戸、及び
吸引ガス処理装置４、地下水処理装置５、蒸気発生装置
６と、これらをつなぐ配管や制御するための操作・制御
盤、配線等から構成されている。土壌ガス吸引井１から
土壌ガス７を吸引して活性炭吸着塔のような吸引ガス処
理装置４に送って吸引した土壌ガス７の処理（吸引ガス
中からの揮発性有機物の除去）を行い、処理ガス８とし
て排出する。地下水揚水井２からは揚水ポンプで地下水
９を揚水し、揚水曝気処理のような地下水処理装置５へ
送って地下水９の処理（地下水中からの揮発性有機物の
除去）を行う。Next, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic configuration diagram of an apparatus for implementing the soil / groundwater contamination repair method of the present invention. The device is shown in FIG.
As shown in the figure, at the site of remediation of soil and groundwater contamination by volatile organic matter, soil gas suction well 1 and groundwater pumping well 2, each well of steam and treated groundwater inflow well 3, suction gas treatment device 4, groundwater treatment It is composed of a device 5, a steam generating device 6, pipes connecting them, an operation / control panel for control, wiring, and the like. Soil gas 7 is sucked from the soil gas suction well 1 and sent to a suction gas treatment device 4 such as an activated carbon adsorption tower to process the sucked soil gas 7 (removal of volatile organic substances from the suction gas). Discharged as gas 8. The groundwater 9 is pumped from the groundwater pumping well 2 by a pump, and sent to the groundwater treatment device 5 such as a pumping aeration process to process the groundwater 9 (removal of volatile organic substances from the groundwater).
【０００７】一方、蒸気及び処理地下水流入井３には、
ボイラのような蒸気発生装置６から送られた蒸気１１を
注入すると同時に、地下水処理装置５で処理された地下
水１０を流入させて蒸気１１と接触させることにより、
流入した地下水の温度を上昇させる。このように、温度
の上昇した水が地下水中へと入り込み、周りの地下水温
度を上昇させながら、地下水中を地下水揚水井２へと流
れてれていく。このとき、ＮＡＰＬ１２がこの流れの途
中又は近傍にあれば、地下水９と共に温度が上昇してガ
ス化が促進され、ガス吸引されやすくなると同時に、地
下水９の流れにのって地下水揚水井２へと移動してい
き、地下水９と共に揚水ポンプによって揚水され、土壌
・地下水中から除去されることになる。On the other hand, in the steam and treated groundwater inflow well 3,
At the same time as injecting the steam 11 sent from the steam generator 6 such as a boiler, the groundwater 10 treated by the groundwater treatment device 5 is caused to flow in and brought into contact with the steam 11,
Raise the temperature of groundwater that flows in. As described above, the water whose temperature has risen enters the groundwater, and flows through the groundwater to the groundwater pumping well 2 while raising the temperature of the surrounding groundwater. At this time, if the NAPL 12 is in the middle of or near this flow, the temperature rises together with the groundwater 9 and gasification is promoted, so that gas is easily sucked, and at the same time, the water flows into the groundwater 9 to the groundwater pumping well 2. The water moves and is pumped by the water pump together with the groundwater 9 to be removed from the soil and the groundwater.
【０００８】[0008]
【発明の効果】上記のように、本発明では、土壌又は地
下水中に温水を注入したことにより、特に、蒸気と地下
水処理水を同時に流入させたことにより、地下水の流動
化や揮発性有機化合物のガス化が促進され、土壌・地下
水中からの揮発性有機化合物の除去量を増加させること
ができ、土壌・地下水汚染修復期間を短縮させることが
できる。As described above, according to the present invention, by injecting warm water into soil or groundwater, in particular, by flowing steam and groundwater treated water simultaneously, fluidization of groundwater and volatile organic compounds can be achieved. Gasification is promoted, the amount of volatile organic compounds removed from soil and groundwater can be increased, and the period of soil and groundwater contamination repair can be shortened.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の修復方法を実施するための装置の概略
構成図。FIG. 1 is a schematic configuration diagram of an apparatus for performing a repair method according to the present invention.
1：土壌ガス吸引井、２：地下水揚水井、３：蒸気及び
処理地下水流入井、4：吸引ガス処理装置、５：地下水
処理装置、６：蒸気発生装置、７：土壌ガス、８：処理
ガス、９：地下水、１０：処理地下水、１１：蒸気、１
２：ＮＡＰＬ1: Soil gas suction well, 2: Groundwater pumping well, 3: Steam and treated groundwater inflow well, 4: Suction gas treatment device, 5: Groundwater treatment device, 6: Steam generator, 7: Soil gas, 8: Treated gas , 9: groundwater, 10: treated groundwater, 11: steam, 1
2: NAPL
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2D043 DA10 4D004 AA41 AB05 AC07 CA22 CA40 CA50 CC03 4D037 AA01 AB02 BA23 BB06 CA01 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D043 DA10 4D004 AA41 AB05 AC07 CA22 CA40 CA50 CC03 4D037 AA01 AB02 BA23 BB06 CA01
Claims (3)
り、揮発性有機化合物により汚染された土壌及び地下水
を修復する方法において、該土壌又は地下水中に温水を
注入することを特徴とする土壌・地下水汚染修復方法。1. A method for repairing soil and groundwater contaminated with volatile organic compounds by suctioning soil gas and pumping groundwater, wherein hot water is injected into the soil or groundwater. Pollution repair method.
理水を土壌中に流入し、該流入した処理水中に蒸気を通
して行うことを特徴とする請求項１記載の土壌・地下水
汚染修復方法。2. The method according to claim 1, wherein said hot water is injected by introducing treated water obtained by treating groundwater into soil and passing steam through the treated water.
り、揮発性有機化合物により汚染された土壌及び地下水
を修復する方法において、該土壌又は地下水中に蒸気を
注入して温度を上昇させ、揮発性有機化合物の気化を促
進すると同時に、地下水の揚水を積極的に行って、その
際の揚水した地下水の処理水を蒸気注入井戸に流入させ
て温水とし、該温水が地下水中を移動することによっ
て、土壌や地下水自体の温度上昇と地下水の流動化を図
ることを特徴とする土壌・地下水汚染修復方法。3. A method for repairing soil and groundwater contaminated with volatile organic compounds by suctioning soil gas and pumping groundwater, wherein steam is injected into the soil or groundwater to raise the temperature, At the same time as promoting the vaporization of organic compounds, the groundwater is actively pumped, and the treated groundwater that has been pumped at that time is allowed to flow into the steam injection well to become hot water, and the hot water moves through the groundwater, A method for remediation of soil and groundwater pollution characterized by increasing the temperature of soil and groundwater itself and fluidizing groundwater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000194460A JP3922512B2 (en) | 2000-06-28 | 2000-06-28 | Soil and groundwater contamination repair method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000194460A JP3922512B2 (en) | 2000-06-28 | 2000-06-28 | Soil and groundwater contamination repair method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002011456A true JP2002011456A (en) | 2002-01-15 |
| JP3922512B2 JP3922512B2 (en) | 2007-05-30 |
Family
ID=18693282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000194460A Expired - Fee Related JP3922512B2 (en) | 2000-06-28 | 2000-06-28 | Soil and groundwater contamination repair method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3922512B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007152198A (en) * | 2005-12-02 | 2007-06-21 | Chem Grouting Co Ltd | Soil purifying method |
| CN103191912A (en) * | 2013-04-12 | 2013-07-10 | 陈云 | Device for in-situ regulation and restoration of organic contaminated soil and underground water |
| CN104040074A (en) * | 2011-08-05 | 2014-09-10 | 威廉·欧内斯特·塔拉帕斯基 | Apparatus and method for channelling groundwater |
| CN110255638A (en) * | 2019-07-25 | 2019-09-20 | 中冶南方都市环保工程技术股份有限公司 | A kind of polluted underground water containing nonaqueous phase liquid original position pump-and-treat system system and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345798B (en) * | 2016-08-25 | 2019-07-12 | 中节能大地（杭州）环境修复有限公司 | A kind of processing method by yellow phosphorus contaminated soil |
-
2000
- 2000-06-28 JP JP2000194460A patent/JP3922512B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007152198A (en) * | 2005-12-02 | 2007-06-21 | Chem Grouting Co Ltd | Soil purifying method |
| JP4480169B2 (en) * | 2005-12-02 | 2010-06-16 | ケミカルグラウト株式会社 | Soil purification method |
| CN104040074A (en) * | 2011-08-05 | 2014-09-10 | 威廉·欧内斯特·塔拉帕斯基 | Apparatus and method for channelling groundwater |
| CN103191912A (en) * | 2013-04-12 | 2013-07-10 | 陈云 | Device for in-situ regulation and restoration of organic contaminated soil and underground water |
| CN110255638A (en) * | 2019-07-25 | 2019-09-20 | 中冶南方都市环保工程技术股份有限公司 | A kind of polluted underground water containing nonaqueous phase liquid original position pump-and-treat system system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3922512B2 (en) | 2007-05-30 |
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