JP2853797B2 - Soil purification apparatus and method - Google Patents
Soil purification apparatus and methodInfo
- Publication number
- JP2853797B2 JP2853797B2 JP5213540A JP21354093A JP2853797B2 JP 2853797 B2 JP2853797 B2 JP 2853797B2 JP 5213540 A JP5213540 A JP 5213540A JP 21354093 A JP21354093 A JP 21354093A JP 2853797 B2 JP2853797 B2 JP 2853797B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- ions
- water
- cathode
- soil purification
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、土壌浄化装置及び方法
に係り、特に、再開発工事等に適した土壌浄化装置及び
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil purification apparatus and method, and more particularly to a soil purification apparatus and method suitable for redevelopment work and the like.
【０００２】[0002]
【従来の技術】化学工場等の跡地を利用して再開発工事
を行う場合、掘削された土壌内に水銀、カドミウム、
鉛、クロム等の重金属やシアンが含まれていることがあ
る。2. Description of the Related Art When redevelopment work is performed using a former site of a chemical factory or the like, mercury, cadmium,
Heavy metals, such as lead and chromium, and cyan may be contained.
【０００３】これらの有害物質は、含まれている量がた
とえ数ｐｐＭ程度のわずかな量であっても、環境への影
響を考慮し、セメント、硫化ソーダ、硫酸第一鉄等の不
溶化剤に混合して溶出を防止したり、あるいはコンクリ
ート容器に収容して外部への漏出を防止することによ
り、十分な安全性を確保していた。[0003] Even if the amount of these harmful substances is only a small amount of about several ppM, it is considered as an insolubilizing agent such as cement, sodium sulfide and ferrous sulfate in consideration of the effect on the environment. Sufficient safety has been ensured by mixing to prevent elution, or by housing in a concrete container to prevent leakage to the outside.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
処理技術は、汚染された土壌から重金属等の汚染物質を
除去するものではないため、汚染された土壌を再利用す
ることができないという問題を生じていた。However, the conventional treatment technology does not remove contaminants such as heavy metals from the contaminated soil, so that there is a problem that the contaminated soil cannot be reused. I was
【０００５】さらに、汚染土壌を収容したコンクリート
容器を、環境への影響を十分考慮しながら長期間保管す
るためには、保管スペース等、別の問題を解決する必要
があった。Further, in order to store a concrete container containing contaminated soil for a long period of time while sufficiently considering the effect on the environment, it is necessary to solve another problem such as a storage space.
【０００６】本発明は、上述した事情を考慮してなされ
たもので、汚染土壌から汚染物質を除去することができ
る土壌浄化装置及び方法を提供することを目的とする。The present invention has been made in consideration of the above circumstances, and has as its object to provide a soil purification apparatus and method capable of removing contaminants from contaminated soil.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明の土壌浄化装置は請求項１に記載したよう
に、所定のイオンおよび水を含有する土壌を収容可能な
収容手段と、所定の電圧を印加可能な電源と、前記電源
に電気接続された陽極及び陰極からなる電極と、前記陽
極および陰極のうち、少なくともいずれかの電極に引き
寄せられた前記イオンを前記水とともに前記収容手段の
外に排出可能な排出手段とを備えたものである。In order to achieve the above object, a soil purifying apparatus according to the present invention comprises a storage means capable of storing soil containing predetermined ions and water; A voltage capable of applying a voltage of at least one of the following, an electrode composed of an anode and a cathode electrically connected to the power supply, and at least one of the anode and the cathode.
Discharging means for discharging the attracted ions together with the water to the outside of the storage means.
【０００８】また、本発明の土壌浄化装置は、請求項１
の電源を、前記イオンが前記電極と前記土壌との界面に
おいて電極反応を実質的に生じないように、発生電圧を
所定の値以下に制御可能にしたものである。[0008] The soil purification apparatus of the present invention is characterized in that
In which the generated voltage can be controlled to a predetermined value or less so that the ions do not substantially cause an electrode reaction at the interface between the electrode and the soil.
【０００９】また、本発明の土壌浄化装置は、請求項１
の排出手段に水及びイオンを選択的に透過可能な濾過手
段を設けたものである。Further, the soil purification apparatus of the present invention is characterized in that
Is provided with filtration means capable of selectively permeating water and ions.
【００１０】また、本発明の土壌浄化装置は、請求項３
の濾過手段を導電性材料で形成し、これを電極としたも
のである。[0010] The soil purification apparatus of the present invention is characterized in that
Is formed of a conductive material, and this is used as an electrode.
【００１１】また、本発明の土壌浄化装置は、請求項１
の収容手段を導電性材料で形成し、これを陰極としたも
のである。Further, the soil purification apparatus of the present invention is characterized in that
Is formed of a conductive material, and this is used as a cathode.
【００１２】また、本発明の土壌浄化装置は、前記収容
手段の底部に開閉自在な蓋を設けたものである。また、
本発明の土壌浄化方法は請求項７に記載したように、所
定のイオンおよび水を含有する土壌に配置された陽極及
び陰極からなる電極を介して電圧を印加し、前記陽極お
よび陰極のうち、少なくともいずれかの電極に引き寄せ
られた前記イオンを前記水とともに前記土壌から排出し
て前記土壌を浄化するものである。 [0012] The soil purification apparatus of the present invention is characterized in that the storage
An openable / closable lid is provided at the bottom of the means. Also,
Soil purification method of the present invention as described in claim 7, where
Anode and anode located on soil containing constant ions and water
A voltage is applied through electrodes consisting of
And at least one of the cathodes
Discharged from the soil together with the water
To purify the soil.
【００１３】[0013]
【作用】本発明の土壌浄化装置および方法においては、
まず、所定のイオン及び水を含有する土壌を収容手段に
収容する。ここで、収容手段を例えば導電性材料で形成
してこれを陰極としておく。In the soil purification apparatus and method of the present invention,
First, soil containing predetermined ions and water is accommodated in an accommodation means. Here, the accommodating means is formed of, for example, a conductive material and is used as a cathode.
【００１４】次いで、陽極を土壌内に挿入し、両極間に
電圧を印加する。Next, the anode is inserted into the soil, and a voltage is applied between the two electrodes.
【００１５】電圧値が適当な値であれば、土壌に含まれ
る陽イオンは陰極に、陰イオンは陽極にそれぞれ引き寄
せられ、電極周辺のイオン濃度が高くなる。If the voltage value is an appropriate value, cations contained in soil are attracted to the cathode and anions are attracted to the anode.
And the ion concentration around the electrodes increases.
【００１６】次いで、陽極若しくは陰極に引き寄せられ
たイオンを水とともに収容容器外に排出する。ここで、
必要であれば濾過手段を設けておき、水及びイオンを土
壌から選択的に排出する。Then, it is attracted to the anode or the cathode.
The discharged ions are discharged out of the container together with the water. here,
If necessary, a filtering means is provided, and water and ions are selectively discharged from the soil.
【００１７】[0017]
【実施例】以下、本発明の土壌浄化装置及び方法の実施
例について、添付図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a soil purification apparatus and method according to the present invention will be described below with reference to the accompanying drawings.
【００１８】（第１実施例）図１(a)は、第１実施例に
係る土壌浄化装置の概略断面図である。(First Embodiment) FIG. 1A is a schematic sectional view of a soil purification apparatus according to a first embodiment.
【００１９】本実施例の土壌浄化装置は、水銀、カドミ
ウム、鉛等の重金属イオンやシアンイオン等が溶けた水
３を含んだ土壌１を収容可能な収容手段としての容器２
を備える。The soil purification apparatus according to the present embodiment includes a container 2 as a storage means capable of storing soil 1 containing water 3 in which heavy metal ions such as mercury, cadmium, and lead, and cyan ions are dissolved.
Is provided.
【００２０】また、本実施例の土壌浄化装置は、土壌１
に所定の電圧を印加して直流電流を通電可能な電源４を
備え、電源４のプラス側には土壌１内に挿入される陽極
５ａ，５ｂを電気接続してある。Further, the soil purification apparatus of the present embodiment
The power supply 4 is capable of applying a predetermined voltage to the power supply and supplying a DC current thereto. The positive side of the power supply 4 is electrically connected to anodes 5a and 5b inserted into the soil 1.
【００２１】陽極５ａ，５ｂは、例えば炭素や所定の金
属で形成するのがよい。The anodes 5a and 5b are preferably made of, for example, carbon or a predetermined metal.
【００２２】本実施例では、容器２を導電性材料で形成
して電源４のマイナス側に電気接続することにより、容
器２全体を陰極として構成してある。In this embodiment, the container 2 is formed of a conductive material and is electrically connected to the negative side of the power supply 4 so that the entire container 2 is configured as a cathode.
【００２３】容器２は、土壌１の重量を支持する必要も
あることを考慮して、例えば鋼で構成するのがよい。The container 2 is preferably made of, for example, steel in consideration of the need to support the weight of the soil 1.
【００２４】電源４は、陽極５ａ，５ｂおよび陰極２で
各イオンが電極反応を実質的に生じないように、発生電
圧を所定の値以下に制御可能になっている。The power supply 4 can control the generated voltage to a predetermined value or less so that each ion does not substantially cause an electrode reaction at the anodes 5a and 5b and the cathode 2.
【００２５】すなわち、鉛、クロム、水銀等の各イオン
には、それぞれのイオンに固有の分解電圧が存在するの
で、土壌１に含まれているイオンの種類を考慮してこれ
らの分解電圧以下に電圧値を調整するようになってい
る。That is, each ion such as lead, chromium, and mercury has a decomposition voltage unique to each ion. The voltage value is adjusted.
【００２６】図１(b)は、図１(a)のＡ−Ａ線に沿った断
面図である。FIG. 1B is a sectional view taken along the line AA of FIG. 1A.
【００２７】同図でわかるように、容器２は例えば箱状
をなし、陽極５ａ，５ｂは、容器２に収容された土壌１
の中央付近に配置してある。ここで、容器２の内壁と陽
極５ａ，５ｂとの距離、あるいは陽極５ａ，５ｂ間の距
離は例えば２ｍ程度とするのがよい。As can be seen from the figure, the container 2 has a box shape, for example, and the anodes 5a and 5b
It is located near the center of. Here, the distance between the inner wall of the container 2 and the anodes 5a and 5b or the distance between the anodes 5a and 5b is preferably, for example, about 2 m.
【００２８】再び図１(a)を参照して、本実施例の土壌
浄化装置は、陰極２に引き寄せられた水銀、カドミウム
等の陽イオンを水とともに容器２の外に排水可能な排出
手段としてのポンプ６を備える。Referring again to FIG. 1 (a), the soil purification apparatus of the present embodiment is provided as a discharging means capable of discharging cations such as mercury and cadmium attracted to the cathode 2 together with water to the outside of the container 2. Is provided.
【００２９】また、陰極である容器２の内側には、土壌
２から水及びイオンを選択的に透過可能な濾過手段とし
ての不織布８、砂利９をそれぞれ容器２の壁側、底部側
に設けてあり、不織布８と容器２の間あるいは砂利９同
士の間隙は、ドレーン層としても作用する。A non-woven fabric 8 and a gravel 9 as filtering means capable of selectively permeating water and ions from the soil 2 are provided on the wall side and the bottom side of the container 2, respectively, inside the container 2, which is a cathode. In addition, the gap between the nonwoven fabric 8 and the container 2 or between the gravel 9 also functions as a drain layer.
【００３０】同様に、本実施例の土壌浄化装置は、陽極
５ａ，５ｂに引き寄せられたシアン等の陰イオンを水と
とも容器２の外に排水可能なポンプ１０を備える。Similarly, the soil purification apparatus of the present embodiment is provided with a pump 10 capable of draining anions such as cyan attracted to the anodes 5a and 5b together with water out of the container 2.
【００３１】図２は、陽極５ａ，５ｂ周辺の詳細縦断面
図である。FIG. 2 is a detailed vertical sectional view of the periphery of the anodes 5a and 5b.
【００３２】同図でわかるように、陽極５ａ，５ｂは、
中空円筒部材の円筒面に多数の孔２１を設けて構成して
ある。As can be seen from the figure, the anodes 5a and 5b
A large number of holes 21 are provided on the cylindrical surface of the hollow cylindrical member.
【００３３】すなわち、陽極５ａ，５ｂは、孔２１を介
して水及びイオンだけを周囲の土壌１から選択的に取り
出すストレーナとしても作用する。That is, the anodes 5a and 5b also function as strainers for selectively extracting only water and ions from the surrounding soil 1 through the holes 21.
【００３４】陽極５ａ，５ｂの中空内部には、ポンプ１
０に接続されたパイプ２２を適当な位置に配置してあ
り、陽極５ａ，５ｂ内部に集まった陰イオンを水ととも
にパイプ２２を介してポンプ１０で汲み上げるようにな
っている。A pump 1 is provided inside the hollows of the anodes 5a and 5b.
A pipe 22 connected to the anode 0 is disposed at an appropriate position, and anions collected in the anodes 5a and 5b are pumped up by the pump 10 through the pipe 22 together with water.
【００３５】本実施例の土壌浄化装置においては、ま
ず、重金属イオン等を含んだ汚染土壌１を容器２内に入
れる。なお、土壌搬入に先だって、不織布８や砂利９を
適宜配置しておく。また、土壌が乾燥している場合に
は、適宜、水を注入しておく。In the soil purification apparatus of this embodiment, first, the contaminated soil 1 containing heavy metal ions and the like is put in the container 2. Note that the nonwoven fabric 8 and the gravel 9 are appropriately arranged before the soil is brought in. When the soil is dry, water is appropriately injected.
【００３６】土壌１を容器２内に搬入後、電源４を作動
させ、陽極５ａ，５ｂ及び陰極である容器２の間に電圧
を印加する。After the soil 1 is carried into the container 2, the power supply 4 is operated, and a voltage is applied between the anodes 5a and 5b and the container 2, which is a cathode.
【００３７】ここで、各イオンが電極において酸化ある
いは還元反応を実質的に起こさず、各電極近傍に引き寄
せられる程度の電圧値、例えば１０ボルト程度に電圧の
大きさを制御する。Here, the magnitude of the voltage is controlled so that each ion does not substantially cause an oxidation or reduction reaction at the electrode and is attracted to the vicinity of each electrode, for example, about 10 volts.
【００３８】また、通電状態が悪い場合には、水、塩化
ナトリウム溶液等を適宜、容器２内に注入する。In the case where the energization state is poor, water, sodium chloride solution and the like are appropriately poured into the container 2.
【００３９】所定時間経過後、陽極５ａ，５ｂに引き寄
せられたシアン等の陰イオンを、陽極５ａ，５ｂに設け
た孔２１を介して水とともにポンプ１０で吸い上げ、容
器外に排出する。After a lapse of a predetermined time, the anodes 5a and 5b are attracted.
Sera were anions cyan, etc., an anode 5a, via a hole 21 provided in 5b sucked up by the pump 10 with water, it discharged out of the container.
【００４０】同様に、陰極２に引き寄せられたカドミウ
ム等の陽イオンを、不織布８あるいは砂利９を介して水
とともにポンプ６で吸引し、容器外に排出する。Similarly, cations such as cadmium attracted to the cathode 2 are sucked together with water through the nonwoven fabric 8 or gravel 9 by the pump 6 and discharged out of the container.
【００４１】排出された水は、ｐＨ調整して沈降させた
り、活性炭に吸着させる等、別途処理を行う。The discharged water is subjected to a separate treatment such as settling by adjusting the pH or adsorption on activated carbon.
【００４２】以上説明したように、本実施例の土壌浄化
装置では、イオンの状態で土壌内に含まれている汚染物
質をまず電極に引き寄せ、次いで、これらのイオンをポ
ンプで排出するようにしたので、土壌内の汚染物質を効
率よく除去することができる。As described above, in the soil purification apparatus of this embodiment, contaminants contained in the soil in the state of ions are first attracted to the electrodes, and then these ions are discharged by the pump. Therefore, the pollutants in the soil can be efficiently removed.
【００４３】このため、汚染土壌を、環境に影響を与え
ないように処理することが可能となるとともに、処理し
た土壌を再利用することも可能となる。Therefore, the contaminated soil can be treated so as not to affect the environment, and the treated soil can be reused.
【００４４】また、汚染土壌を収容するのに必要であっ
たコンクリート容器あるいは汚染物質の溶出を防止する
のに必要であった薬剤等が不要になる。In addition, there is no need for a concrete container necessary for accommodating contaminated soil or a chemical agent required for preventing elution of contaminants.
【００４５】本実施例では、容器を導電性材料で形成し
これを電源のマイナス側に電気接続することによって容
器自体を陰極として構成したが、容器を非導電性材料で
形成し、別途、電極を設けてこれを陰極としてもよい。In this embodiment, the container is formed of a conductive material and is electrically connected to the negative side of the power source, thereby forming the container itself as a cathode. However, the container is formed of a non-conductive material, and a separate electrode is formed. And may be used as a cathode.
【００４６】この場合、容器２の内周に沿って金属製の
メッシュあるいはラスを設け、これを陰極としてもよ
い。In this case, a metal mesh or lath may be provided along the inner periphery of the container 2 and used as a cathode.
【００４７】また、本実施例では、濾過手段として不織
布を用いて構成したが、かかる形態に限定されるもので
はなく、土壌から水及びイオンを選択分離できるもので
あればいかなる形態のものでもよい。例えば、上述した
ようなメッシュあるいはラスを濾過手段としても用いる
ことができる。In this embodiment, a nonwoven fabric is used as the filtering means. However, the present invention is not limited to such a form, and any form may be used as long as water and ions can be selectively separated from soil. . For example, a mesh or lath as described above can be used as the filtering means.
【００４８】また、本実施例では、排出手段としてポン
プを用いて構成したが、重力による自然落下で足りる場
合には、ポンプを省略してもよい。Further, in this embodiment, a pump is used as the discharging means, but the pump may be omitted if a natural fall by gravity is sufficient.
【００４９】特に、容器を陰極とした場合の陰極側の排
出手段においてポンプを省略してもよい。In particular, the pump may be omitted in the discharge means on the cathode side when the container is a cathode.
【００５０】また、本実施例では、不織布と容器内面と
の間に特にドレーン層を設けなかったが、図３のよう
に、不織布８と容器２の内面の間にストレーナ管３１を
配置してもよい。In this embodiment, no drain layer is provided between the nonwoven fabric and the inner surface of the container. However, as shown in FIG. 3, a strainer tube 31 is disposed between the nonwoven fabric 8 and the inner surface of the container 2. Is also good.
【００５１】また、本実施例では、陽極側に集まったイ
オンの排出手段をポンプで上方に吸い上げるように構成
したが、容器の底部を介して下方に自然落下させあるい
はポンプで吸引する構成としてもよい。Further, in this embodiment, the discharging means of the ions collected on the anode side is configured to be sucked upward by the pump, but may be naturally dropped downward through the bottom of the container or suctioned by the pump. Good.
【００５２】また、本実施例では、陽極５ａ，５ｂを、
孔を設けた中空導電性部材で構成することにより、陽極
に濾過手段としての機能を持たせたが、陽極と濾過手段
とを別々に構成してもよい。すなわち、非導電性のスト
レーナ管の内部に陽極を配置する構成としてもよい。In this embodiment, the anodes 5a and 5b are
Although the anode has a function as a filtering means by being formed of a hollow conductive member provided with holes, the anode and the filtering means may be separately formed. That is, the anode may be arranged inside the non-conductive strainer tube.
【００５３】（第２実施例）図４は、第２実施例に係る
土壌浄化装置の概略断面図である。なお、第１実施例と
実質的に同一の部品等については同一の符号を付してそ
の説明を省略する。(Second Embodiment) FIG. 4 is a schematic sectional view of a soil purification apparatus according to a second embodiment. Note that the same reference numerals are given to components and the like that are substantially the same as those in the first embodiment, and description thereof will be omitted.
【００５４】第２実施例の土壌浄化装置は、第１実施例
と同様、土壌１を収容可能な収容手段としての容器４１
と、土壌１に電圧を印加する電源４と、電源４のプラス
側に電気接続された陽極５ａ，５ｂとを備え、容器４１
は、導電性材料で形成してあり電源４のマイナス側に電
気接続することによって陰極として作用するようになっ
ている。The soil purification apparatus of the second embodiment is similar to the first embodiment in that a container 41 as a storage means capable of storing the soil 1 is provided.
And a power source 4 for applying a voltage to the soil 1, and anodes 5 a and 5 b electrically connected to the positive side of the power source 4.
Is formed of a conductive material, and functions as a cathode by being electrically connected to the negative side of the power supply 4.
【００５５】容器４１は、上部に比べて下部が先細にな
っており、底部には開閉自在な蓋４２を設けてある。The lower part of the container 41 is tapered as compared with the upper part, and a lid 42 which can be opened and closed is provided at the bottom.
【００５６】また、陰極である容器４１の内側には、土
壌１から水及びイオンを選択的に透過可能な濾過手段と
しての不織布８を容器４１の壁側に設けてあり、不織布
８と容器４１の間はドレーン層としても作用する。同様
に、蓋４２の上部には、濾過手段としての砂利９を設け
てあり、砂利９はドレーン層としても作用する。A nonwoven fabric 8 as a filtering means capable of selectively transmitting water and ions from the soil 1 is provided on the wall side of the container 41 inside the container 41 serving as a cathode. During this period, it also acts as a drain layer. Similarly, on the upper part of the lid 42, a gravel 9 as a filtering means is provided, and the gravel 9 also functions as a drain layer.
【００５７】第２実施例の土壌浄化装置では、陰極であ
る容器４１に引き寄せられた水銀、カドミウム等の陽イ
オンを、蓋４２に設けた排水パイプ４３を介して水とと
もに容器４１の外に排出するようになっている。In the soil purification apparatus of the second embodiment, cations such as mercury and cadmium attracted to the container 41 serving as a cathode are discharged out of the container 41 together with water through a drain pipe 43 provided on the lid 42. It is supposed to.
【００５８】第２実施例の土壌浄化装置においても、第
１実施例とほぼ同様に作用するので詳細な説明は省略す
るが、土壌内から汚染物質を除去した後、所定の場所で
蓋４２を開いて土壌を容器４１から搬出する点が第１実
施例と異なる。The soil purifying apparatus of the second embodiment operates in substantially the same manner as the first embodiment, and therefore detailed description is omitted. However, after removing contaminants from the soil, the lid 42 is fixed at a predetermined place. It differs from the first embodiment in that the soil is opened and the soil is carried out from the container 41.
【００５９】以上説明したように、第２実施例の土壌浄
化装置では、第１実施例と同様、イオンの状態で土壌内
に含まれている汚染物質をまず電極に引き寄せ、次い
で、これらのイオンをポンプで吸引するあるいは重力に
よって自然落下させるようにしたので、土壌内の汚染物
質を効率よく除去することができる。As described above, in the soil purification apparatus of the second embodiment, as in the first embodiment, the contaminants contained in the soil in the state of ions are first attracted to the electrodes, and then these ions are removed. Is sucked by a pump or dropped naturally by gravity, so that pollutants in soil can be efficiently removed.
【００６０】このため、汚染土壌を収容するのに必要で
あったコンクリート容器あるいは汚染物質の溶出を防止
するのに必要であった薬剤等が不要になる。For this reason, a concrete container, which is necessary for accommodating contaminated soil, or a chemical, which is necessary for preventing elution of contaminants, becomes unnecessary.
【００６１】また、汚染土壌を、環境に影響を与えない
ように処理することが可能となるとともに、処理した土
壌を再利用することも可能となる。特に、第２実施例で
は、所望の位置で蓋４２を開くことにより、処理された
土壌を容易に再利用することができる。Further, the contaminated soil can be treated so as not to affect the environment, and the treated soil can be reused. In particular, in the second embodiment, the treated soil can be easily reused by opening the lid 42 at a desired position.
【００６２】[0062]
【発明の効果】以上述べたように、請求項１の発明に係
る土壌浄化装置によれば、イオンの状態で土壌内に含ま
れている汚染物質を各電極に引き寄せ、次いでこれらイ
オン性汚染物質をポンプ等で排出することで、土壌内の
汚染物質を効率よく除去することが可能となる。特に、
カドミウム等の陽イオンのみならず、シアン等の陰イオ
ンについてもこれを陽極側から回収することができる。
また、請求項２の発明に係る土壌浄化装置によれば、各
イオンを電極反応を生じさせずに回収することができる
という作用効果をさらに奏する。また、請求項３の発明
に係る土壌浄化装置によれば、土壌から水及びイオンを
濾過することができるという作用効果をさらに奏する。
また、請求項４の発明に係る土壌浄化装置によれば、電
極に濾過機能を併せ持たせることができるという作用効
果をさらに奏する。また、請求項５の発明に係る土壌浄
化装置によれば、収容手段に陰極としての機能を併せ持
たせることができるという作用効果をさらに奏する。ま
た、請求項６の発明に係る土壌浄化装置によれば、処理
が終わった土壌を容易に収容手段から搬出することがで
きるという作用効果をさらに奏する。また、請求項７の
発明に係る土壌浄化方法によれば、イオンの状態で土壌
内に含まれている汚染物質を各電極に引き寄せ、次いで
これらイオン性汚染物質をポンプ等で排出することで、
土壌内の汚染物質を効率よく除去することができる。特
に、カドミウム等の陽イオンのみならず、シアン等の陰
イオンについてもこれを陽極側から回収することが可能
となる。 As described above, according to the first aspect of the present invention,
According to the soil purification device, it is contained in the soil as ions
Attracted contaminants to each electrode, and then
By discharging on-contaminants with a pump, etc.,
Contaminants can be efficiently removed. Especially,
Not only cations such as cadmium, but also anions such as cyan
This can also be recovered from the anode side.
According to the soil purification apparatus of the second aspect,
Ions can be collected without causing electrode reactions
The operation and effect are further achieved. The invention of claim 3
According to the soil purification device according to the above, water and ions from the soil
The effect of being able to filter is further exhibited.
According to the soil purification apparatus of the fourth aspect,
The function and effect that the pole can also have a filtering function
Play more fruit. Further, the soil purification according to the fifth aspect of the present invention.
According to the conversion device, the housing means also has a function as a cathode.
The effect of being able to add is further exhibited. Ma
According to the soil purification apparatus of the invention of claim 6, the treatment is performed.
Can be easily removed from storage means
The function and the effect of being able to play are further exhibited. In addition, claim 7
According to the soil purification method of the present invention, the soil
Attracts contaminants contained within each electrode and then
By discharging these ionic contaminants with a pump, etc.,
Pollutants in soil can be efficiently removed. Special
In addition to cations such as cadmium,
Ions can also be recovered from the anode side
Becomes
【００６３】[0063]
【図１】(a)は第１実施例に係る土壌浄化装置の概略縦
断面図、(b)は、(a)のＡ−Ａ線に沿った断面図。FIG. 1A is a schematic longitudinal sectional view of a soil purification device according to a first embodiment, and FIG. 1B is a sectional view taken along line AA in FIG.
【図２】陽極５ａ，５ｂの詳細縦断面図。FIG. 2 is a detailed vertical sectional view of anodes 5a and 5b.
【図３】第１実施例の変形例を示す土壌浄化装置の水平
断面図。FIG. 3 is a horizontal sectional view of a soil purification device showing a modification of the first embodiment.
【図４】第２実施例に係る土壌浄化装置の概略縦断面
図。FIG. 4 is a schematic longitudinal sectional view of a soil purification device according to a second embodiment.
１ 土壌 ２ 容器（陰極） ３ イオンおよび水 ４ 電源 ５ａ，５ｂ 陽極 ６ ポンプ（排出手段） ８ 不織布（濾過手段） ９ 砂利（濾過手段） １０ ポンプ（排出手段） ２１ 孔（濾過手段） ３１ ストレーナ管 ４１ 容器（陰極） ４２ 蓋 DESCRIPTION OF SYMBOLS 1 Soil 2 Container (cathode) 3 Ion and water 4 Power supply 5a, 5b Anode 6 Pump (discharge means) 8 Nonwoven fabric (filter means) 9 Gravel (filter means) 10 Pump (discharge means) 21 holes (filter means) 31 Strainer tube 41 container (cathode) 42 lid
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E02D 3/11 B03C 7/00 B09C 1/04──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 6 , DB name) E02D 3/11 B03C 7/00 B09C 1/04
Claims (7)
収容可能な収容手段と、所定の電圧を印加可能な電源
と、前記電源に電気接続された陽極及び陰極からなる電
極と、前記陽極および陰極のうち、少なくともいずれか
の電極に引き寄せられた前記イオンを前記水とともに前
記収容手段の外に排出可能な排出手段とを備えたことを
特徴とする土壌浄化装置。1. A storage means capable of storing soil containing predetermined ions and water, a power supply capable of applying a predetermined voltage, an electrode comprising an anode and a cathode electrically connected to the power supply, And a discharging means for discharging the ions attracted to at least any one of the cathodes together with the water to the outside of the housing means.
記土壌との界面において電極反応を実質的に生じないよ
うに、発生電圧を所定の値以下に制御可能になっている
請求項１記載の土壌浄化装置。2. The power supply according to claim 1, wherein the power supply is capable of controlling a generated voltage to a predetermined value or less so that the ions do not substantially cause an electrode reaction at an interface between the electrode and the soil. Soil purification equipment.
イオンを選択的に透過可能な濾過手段を備えた請求項１
記載の土壌浄化装置。3. The discharging means comprises a filtering means capable of selectively permeating water and ions contained in the soil.
The soil purification device according to any one of the preceding claims.
を前記電極とした請求項３記載の土壌浄化装置。4. The soil purification apparatus according to claim 3, wherein said filtering means is formed of a conductive material and is used as said electrode.
を前記陰極とした請求項１記載の土壌浄化装置。5. The soil purification apparatus according to claim 1, wherein said housing means is formed of a conductive material and is used as said cathode.
けた請求項１記載の土壌浄化装置。 6. An openable and closable lid is provided at the bottom of said storage means.
The soil purification apparatus according to claim 1, wherein
配置された陽極及び陰極からなる電極を介して電圧を印
加し、前記陽極および陰極のうち、少なくともいずれか
の電極に引き寄せられた前記イオンを前記水とともに前
記土壌から排出して前記土壌を浄化することを特徴とす
る土壌浄化方法。 7. In a soil containing predetermined ions and water.
The voltage is applied via the electrodes consisting of the anode and cathode arranged.
In addition, at least one of the anode and the cathode
The ions attracted to the electrode together with the water
Purifying the soil by discharging from the soil.
Soil purification method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5213540A JP2853797B2 (en) | 1993-08-06 | 1993-08-06 | Soil purification apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5213540A JP2853797B2 (en) | 1993-08-06 | 1993-08-06 | Soil purification apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0748827A JPH0748827A (en) | 1995-02-21 |
| JP2853797B2 true JP2853797B2 (en) | 1999-02-03 |
Family
ID=16640887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5213540A Expired - Fee Related JP2853797B2 (en) | 1993-08-06 | 1993-08-06 | Soil purification apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2853797B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4970819B2 (en) * | 2006-03-24 | 2012-07-11 | 西松建設株式会社 | Heavy metal removal method and apparatus, contaminated soil purification method and purification apparatus |
| JP2012081385A (en) * | 2010-10-07 | 2012-04-26 | Disco Corp | Separation apparatus |
| CN104690084B (en) * | 2013-12-05 | 2017-02-01 | 中国科学院沈阳应用生态研究所 | Electrochemical and microbial synergetic restoration integrated equipment for organic contaminated soil and restoration method thereof |
| CN107258134A (en) * | 2017-06-29 | 2017-10-20 | 天津大学 | A kind of saline land greening drives salt method with low-voltage DC |
-
1993
- 1993-08-06 JP JP5213540A patent/JP2853797B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ａｉｒ ＆ Ｗａｓｔｅ Ｍａｎａｇｅｍｅｎｔ Ａｓｓｏｃｉａｔｉｏｎ ｖｏｌ．４０，Ｎｏ．１２ ｐ１６７０−１６７６（１９９０．１２） |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0748827A (en) | 1995-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020005357A1 (en) | Method of treating waste from nuclear fuel handling facility and apparatus for carrying out the same | |
| DE2424091B2 (en) | Process and device for anodic oxidation of organic pollutants in water in a fluidized bed made of conductive adsorbent | |
| CA2873433A1 (en) | Electrokinetic soil remediation | |
| US5865964A (en) | Apparatus for stripping ions from concrete and soil | |
| JP2853797B2 (en) | Soil purification apparatus and method | |
| US6241861B1 (en) | Waste water treatment tank using an electrochemical treatment process | |
| CN110434166B (en) | Double-ring vertical self-cleaning type in-situ dehydration pollution-reduction electric repair device and method | |
| JP2000140819A (en) | Method for cleaning heavy metal-contaminated soil | |
| JP2005007385A (en) | Garbage disposal system | |
| JP3178581B2 (en) | How to clean contaminated soil | |
| KR20030066901A (en) | Development of electrode compartment for enhanced electrokinetic remediation and post-treatment of waste water | |
| US20020013506A1 (en) | Contaminant treatment method | |
| CN112605115B (en) | Heavy metal contaminated soil remediation device and method | |
| US5480558A (en) | Electric enhancement of adsorbent flotation separation | |
| DE4210949A1 (en) | On=site process for cleaning and restoration of contaminated ground - using coincident applied electric and sound wave fields in conjunction with an oxidising agent inserted in the affected ground | |
| EP0760718B1 (en) | Apparatus for the decontamination of heavy metals containing soil | |
| JP7002981B2 (en) | Decontamination method of contaminated soil | |
| JP2002035736A (en) | Treatment device for contaminated soil and method therefor | |
| JPH11253924A (en) | Purification of soil polluted with heavy metal and electrolytic bath for purification | |
| KR20030062988A (en) | Remediation and dewatering of dredged slurry and mine tailing with the vacuum method and electrokinetic phenomenon(Vacuum-electrokinetic dewatering and remediatin method) | |
| JP3107187B2 (en) | Electrode plate for separating harmful metals in sludge and separator using the same | |
| JP4782904B2 (en) | Electrochemical purification method for contaminated ground | |
| KR20060036813A (en) | Remediation and dewatering of dredged slurry and mine tailing with the vacuum method and electrokinetic phenomenon and apparatus) | |
| JPH1034126A (en) | Method and apparatus for purifying soil polluted with heavy metal | |
| JP3834808B2 (en) | Organochlorine compound processing apparatus and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981023 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071120 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081120 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091120 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091120 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101120 Year of fee payment: 12 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101120 Year of fee payment: 12 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111120 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121120 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |