JPH08281247A - Electrochemical treatment - Google Patents
Electrochemical treatmentInfo
- Publication number
- JPH08281247A JPH08281247A JP7110103A JP11010395A JPH08281247A JP H08281247 A JPH08281247 A JP H08281247A JP 7110103 A JP7110103 A JP 7110103A JP 11010395 A JP11010395 A JP 11010395A JP H08281247 A JPH08281247 A JP H08281247A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- cathode
- anode
- soil
- sludge
- 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.)
- Pending
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は有害物質で汚染された土
壌、汚泥等処理を必要とする物質（被処理物）から有害
物質等を分離除去する電気化学的処理法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrochemical treatment method for separating and removing harmful substances and the like from substances (subjects) requiring treatment such as soil and sludge contaminated with harmful substances.
【０００２】[0002]
【従来の技術】産業廃棄物や排水で土壌が汚染された場
合、従来は適切な処理法がなく、新しい土壌で置き換え
る等が普通であった。しかし置き換えでは搬出された汚
染土壌の処置が問題となる。最近、土壌をそのままの状
態で土中に設けた陰、陽電極により電気浸透現象を利用
し、土壌を洗浄、浄化して有害物質を除去する方法が提
案されている。（特開平５−５９７１６）2. Description of the Related Art When soil is contaminated with industrial waste or waste water, there is no appropriate treatment method and it is usually replaced with new soil. However, the replacement of the contaminated soil poses a problem. Recently, there has been proposed a method of cleaning and purifying the soil to remove harmful substances by utilizing the electroosmosis phenomenon by means of negative and positive electrodes provided in the soil as it is. (JP-A-5-59716)
【０００３】[0003]
【発明が解決しようとする課題】前記浸透現象を利用し
た汚染土壌の浄化方法は土壌をそのままの状態で処理で
きる点で有利である。しかし問題は浄化後の有害物質を
含む水の処理である。この処理については前記特許公報
には記載されていない。土壌中に重金属化合物や有機化
合物等種々の有害物質が含まれている場合には、これら
の有害物質が洗浄後の水に含まれてくる。この排水処理
が重要となる。本発明の目的は種々の有害物質を含む土
壌等に適用可能であり、その有害物質の抽出除去とその
あとの液体処理とを一貫した一つの系内で行うことがで
き、有害物質を系外に排出することのない電気化学的処
理法を提供することにある。The method for purifying contaminated soil utilizing the infiltration phenomenon is advantageous in that the soil can be treated as it is. However, the problem is the treatment of water containing harmful substances after purification. This process is not described in the above patent publication. When the soil contains various harmful substances such as heavy metal compounds and organic compounds, these harmful substances are included in the water after washing. This wastewater treatment is important. INDUSTRIAL APPLICABILITY The object of the present invention is applicable to soils containing various harmful substances, and the extraction and removal of the harmful substances and the subsequent liquid treatment can be performed in one system consistently, and the harmful substances can be removed from the system. The object of the present invention is to provide an electrochemical treatment method that does not discharge into the environment.
【０００４】[0004]
【課題を解決するための手段】本発明は前記の浸透現象
等による処理とその液体の電気分解（電解）とを連結
し、好ましくは両者の間に電解後の液体を循環させて処
理することにより上記の目的を達成したものである。According to the present invention, the treatment by the above-mentioned permeation phenomenon and the electrolysis (electrolysis) of the liquid are connected, and preferably the liquid after electrolysis is circulated between the both treatments. Thus, the above-mentioned object is achieved.
【０００５】即ち、本発明は二つの基本的なプロセスか
らなり、第一のプロセスは被処理物を陽極と陰極の間に
介在させ、被処理物から分離ないし除去する物質を液体
の存在下に前記両極間を電気化学的作用により液体と共
に移動させて集液するプロセスであり、第二のプロセス
はこの集液を電解するプロセスである。That is, the present invention comprises two basic processes. The first process is to interpose the object to be treated between the anode and the cathode, and to separate the substance to be separated or removed from the object to be treated in the presence of a liquid. The second process is a process of moving the two electrodes together with a liquid by an electrochemical action to collect the liquid, and the second process of electrolyzing the liquid collection.
【０００６】上記において電気化学的作用とは電気浸透
あるいは電気泳動であり、その作用により液体が処理物
中を移動することになる。土壌等を被処理物とする場
合、液体は陽極から陰極に向けて流れる。液体に溶解あ
るいは吸着している物質も液体と共に移動する。これに
よって土壌等が洗浄、浄化される。In the above description, the electrochemical action is electroosmosis or electrophoresis, and the action causes the liquid to move in the treated material. When soil or the like is used as the material to be treated, the liquid flows from the anode toward the cathode. The substance dissolved or adsorbed in the liquid also moves with the liquid. This cleans and purifies the soil and the like.
【０００７】本発明の第一プロセスとして陽極及び陰極
を通液性とし、陽極部、例えば陽極の外側（被処理物と
反対側）に給液室を設け、そこから通液性の陽極を通し
て被処理物に液体を供給し、一方陰極の外側に集液室を
設けて、被処理物から移動してくる液体を集めるように
することができる。この集液を第二プロセスに送り、電
解し、有害物質を電極に析出させあるいは分解して液体
から分離除去する。電解後の液体は前記給液室に戻す。
この操作を循環させ、液体中の有害物質の濃度が規定値
以下になる迄繰り返す。As the first process of the present invention, the anode and the cathode are made liquid-permeable, and a liquid supply chamber is provided on the outside of the anode part (for example, the side opposite to the object to be treated), and the liquid-permeable anode is passed through from there. It is possible to supply a liquid to the object to be processed and, on the other hand, provide a liquid collecting chamber outside the cathode to collect the liquid moving from the object to be processed. The collected liquid is sent to the second process, electrolyzed, and harmful substances are deposited or decomposed on the electrodes and separated and removed from the liquid. The liquid after electrolysis is returned to the liquid supply chamber.
This operation is circulated and repeated until the concentration of harmful substances in the liquid falls below the specified value.
【０００８】以下図面を参照して詳しく説明する。図１
は本発明方法の１実施態様を示すもので、１が電気化学
的処理槽（以下処理槽という）１３が電解槽である。こ
の処理槽１の中に陽極３、陰極４を設ける。図示の両極
は処理槽を紙面に垂直方向に仕切っている板状である。
そしてこれら両極には液体を通す小孔３１、４１が適当
な間隔で穿がかれている。被処理物、例えば汚泥２はこ
の電極の間に介在させる。電極に穿がかれる小孔はスリ
ット状とすることもできる。小孔の径あるいはスリット
の間隔は適宜定める。処理される汚泥は液体を含み、一
般的には流動性があるが、この小孔とかスリットは汚泥
がほとんど通ることのない程度にする。A detailed description will be given below with reference to the drawings. FIG.
Shows one embodiment of the method of the present invention, in which 1 is an electrochemical treatment tank (hereinafter referred to as a treatment tank) 13 is an electrolytic bath. An anode 3 and a cathode 4 are provided in this processing tank 1. The two electrodes shown in the figure are plate-shaped partitions of the processing tank in the direction perpendicular to the paper surface.
Then, small holes 31 and 41 through which liquid passes are formed in these electrodes at appropriate intervals. The object to be treated, for example sludge 2, is interposed between these electrodes. The small holes formed in the electrodes may be slit-shaped. The diameter of the small hole or the interval between the slits is set appropriately. The sludge to be treated contains a liquid and is generally fluid, but the small holes or slits are such that the sludge hardly passes through.
【０００９】陽極の外側には給液室５があり、その液体
が小孔３１を通って汚泥に供給される。陽極及び陰極に
は交流電源８からトランス９により所定の電圧とし、整
流器１０により直流にして通電される。この通電は汚泥
中に電気浸透や電気泳動現象を起こさせるものであり、
そのため電解の起こらない範囲の低電極電位、低電流密
度に抑えられる。A liquid supply chamber 5 is provided outside the anode, and the liquid is supplied to the sludge through the small holes 31. A predetermined voltage is supplied to the anode and the cathode from the AC power supply 8 by the transformer 9, and the DC current is supplied by the rectifier 10. This energization causes electroosmosis and electrophoretic phenomena in the sludge,
Therefore, the low electrode potential and the low current density can be suppressed within the range where electrolysis does not occur.
【００１０】電極間の距離は電圧により定まり、例えば
汚泥の場合、電圧１Ｖ当たり１ｃｍを目安に定めればよ
い。従って１００Ｖであれば１ｍ前後の間隔が適当であ
る。The distance between the electrodes is determined by the voltage. For sludge, for example, 1 cm per 1 V of voltage may be set as a standard. Therefore, if it is 100 V, an interval of about 1 m is appropriate.
【００１１】陽極及び陰極に電圧が負荷されると汚泥中
では電気浸透現象等により液体が陽極側から陰極側に流
れる。液体の流れに伴って液体に溶解あるいは付着して
いる物質も移動する。従って汚泥は撹拌することなく洗
浄抽出作用が行われ、汚染有害物質が分離移行する。When a voltage is applied to the anode and the cathode, the liquid flows from the anode side to the cathode side in the sludge due to an electroosmosis phenomenon or the like. A substance dissolved or attached to the liquid also moves along with the flow of the liquid. Therefore, the sludge is washed and extracted without stirring, and pollutant harmful substances are separated and transferred.
【００１２】汚泥中から分離除去しようとする有害物質
が溶解しやすい液体を選ぶようにし、その溶解や付着の
効果を高めるため酸やアルカリを添加し、ｐＨを調整し
たり、界面活性剤等を加えることもできる。A liquid in which harmful substances to be separated and removed from the sludge are easily dissolved is selected, and an acid or an alkali is added in order to enhance the effect of the dissolution or adhesion, pH is adjusted, and a surfactant or the like is added. It can also be added.
【００１３】汚泥中を移動した液体は陰極の小孔４１を
通り、集液室６に溜められ、次の電解プロセスに移され
る。図示の装置は電極とは別に給液室及び集液室を設け
たが、これらを一体とした中空板状体にしてその内側を
電極にして小孔を穿がち、中空の内部に液体を保有する
ようにしてもよい。電極の材質は普通鋼や黒鉛等でよ
い。The liquid that has moved through the sludge passes through the small holes 41 of the cathode, is stored in the liquid collection chamber 6, and is transferred to the next electrolytic process. In the device shown in the figure, a liquid supply chamber and a liquid collection chamber are provided separately from the electrodes. However, a hollow plate-like body is formed by integrating these into an electrode inside and a small hole is bored to hold the liquid inside the hollow space. You may do it. The material of the electrode may be ordinary steel or graphite.
【００１４】次に第２プロセスについて説明する。第１
プロセスの集液室６より液体を送入パイプ１２の栓１１
を開いて電解槽１３に送入する。１４は陽極、１５は陰
極である。電極の材質では陽極は黒鉛とか白金、酸化パ
ラジュウム、酸化ルテニュウム等のような不溶性の物で
なくてはならないが、陰極は普通鋼でよい。第２プロセ
スは電解であり、電解する物質の分解電圧以上の高電
位、高電流密度の直流が流される。Next, the second process will be described. First
Stopper 11 of pipe 12 for introducing liquid from liquid collecting chamber 6 of process
Is opened and fed into the electrolytic bath 13. Reference numeral 14 is an anode and 15 is a cathode. Regarding the material of the electrode, the anode must be an insoluble substance such as graphite, platinum, palladium oxide, ruthenium oxide, etc., but the cathode can be ordinary steel. The second process is electrolysis, and a direct current having a high potential and a high current density, which is equal to or higher than the decomposition voltage of the substance to be electrolyzed, is supplied.
【００１５】電解においては重金属等は陰極に析出し、
陽極からは酸素等のガスが発生するので必要によりその
捕集装置を取り付けることもできる。陰極にある程度以
上金属が析出したところでこれを回収する。そして液体
は第１プロセスに戻す。液体が水溶液でＮａＣｌ等が含
まれている場合は電解槽に隔膜を設け、陽極側に注水
し、電解が進んで陰極側に生じたＮａ０Ｈの濃度が高く
なったら、これを抜き出す。また陽極側からＮａＣｌの
濃度の低くなった水溶液を抜き出し、第１プロセスに戻
す。In electrolysis, heavy metals are deposited on the cathode,
Since a gas such as oxygen is generated from the anode, a collector for the gas can be attached if necessary. When metal is deposited on the cathode to some extent, it is collected. The liquid then returns to the first process. When the liquid is an aqueous solution and contains NaCl or the like, a diaphragm is provided in the electrolytic cell and water is poured into the anode side, and when the concentration of Na0H generated on the cathode side increases due to the progress of electrolysis, this is taken out. Further, the aqueous solution having a reduced concentration of NaCl is extracted from the anode side and returned to the first process.
【００１６】汚泥がベンゼン等の有機化合物で汚染され
ている場合は集液に少量のベンゼン等が含まれるが、こ
れは電解槽において陽極近傍では発生期の酸素により酸
化され、又陰極近傍では発生期の水素により還元されて
分解除去される。When sludge is contaminated with an organic compound such as benzene, a small amount of benzene etc. is contained in the collected liquid, which is oxidized by nascent oxygen in the vicinity of the anode in the electrolytic cell and is generated in the vicinity of the cathode. It is reduced and decomposed and removed by the hydrogen of the period.
【００１７】電解により液体中の除去すべき物質の濃度
が規定値以下となったところで電解槽の栓１１を開き、
液体を一旦貯液槽１６に落とし、そこからポンプ１８に
より循環パイプ１７を通して送液槽７に送り、溜められ
る。送液槽７より処理槽１の給液室５に必要量の液体を
流す。この液体の循環によって汚泥は洗浄浄化され、有
害物質は主として溶解除去される。浄化された汚泥は処
理槽から取り出され、次に処理すべき汚泥を処理槽に装
入して同様の操作を行う。液体は有害物質が規定値以下
となっているのでそのまま使用することができる。従っ
て有害物質はこのプロセスの系内で処理され廃棄物や排
水は生じないので二次汚染のおそれはない。When the concentration of the substance to be removed in the liquid by electrolysis falls below the specified value, the stopper 11 of the electrolytic cell is opened,
The liquid is once dropped into the liquid storage tank 16 and is then sent from the pump 18 through the circulation pipe 17 to the liquid supply tank 7 to be stored therein. A required amount of liquid is flowed from the liquid sending tank 7 into the liquid supply chamber 5 of the processing tank 1. By circulating this liquid, sludge is washed and purified, and harmful substances are mainly dissolved and removed. The purified sludge is taken out from the treatment tank, the sludge to be treated next is loaded into the treatment tank, and the same operation is performed. The liquid can be used as it is because the harmful substances are below the specified value. Therefore, harmful substances are treated within the system of this process and no waste or waste water is generated, so there is no risk of secondary pollution.
【００１８】以上は汚泥処理について説明したが、その
他例えば粉体中の有害物質や不純物等の除去に本発明方
法を適用することができる。電気化学的処理法は通常の
洗浄に較べて短時間で済み、液体の使用量が少なくて済
むので有害物質等を抽出した後の液体処理が容易とな
る。Although the sludge treatment has been described above, the method of the present invention can be applied to the removal of other harmful substances, impurities, etc. in the powder. The electrochemical treatment method requires a shorter time than usual cleaning, and the amount of liquid used is small, so that liquid treatment after extracting harmful substances and the like becomes easy.
【００１９】以下実施例により具体的に説明する。Specific examples will be described below.
（実施例１）六価クロムを１００ｐｐｍ含有する土壌を
図１に示す装置により処理した。 第１プロセス 電極は陽、陰極共に普通鋼板（厚さ１ｍｍ，幅５０ｍ
ｍ，長さ１５０ｍｍ）に直径１ｍｍの小孔をほぼ２０ｍ
ｍ間隔で均等にあけて使用した。電極間隔を１００ｍｍ
としてプラスチックの処理槽の中に設置した。上記土壌
を７００ｃｃ（５×１４×１０）を電極間に充填し、給
液室５よりカセイカリの１０％水溶液を供給して通電し
た。この時の電圧１０Ｖ、電流は３５ｍＡ（０. ５ｍＡ
／ｃｍ２）であった。約３０分の通電により約２００ｃ
ｃの水溶液が集液室６に移行した。(Example 1) Soil containing 100 ppm of hexavalent chromium was treated with the apparatus shown in FIG. The first process electrode is a normal steel plate for both positive and negative electrodes (thickness 1 mm, width 50 m
m, length 150 mm) with a small hole with a diameter of 1 mm approximately 20 m
It was used evenly spaced at m intervals. Electrode spacing is 100 mm
Was installed in a plastic processing tank. The soil was filled with 700 cc (5 × 14 × 10) between the electrodes, and a 10% aqueous solution of causticus was supplied from the liquid supply chamber 5 to energize. At this time, the voltage is 10 V and the current is 35 mA (0.5 mA).
/ Cm2). About 200c by energizing for about 30 minutes
The aqueous solution of c was transferred to the collection chamber 6.
【００２０】第２プロセス 上記の集液室の水溶液を電解槽に送入し、電解した。使
用した電極材質は陽極が黒鉛、陰極が普通鋼であり、い
ずれも幅１１０ｍｍ，長さ１５０ｍｍとした。電極間隔
は１０ｍｍとして通電した。通電条件は電圧約４Ｖ，電
流７５Ａ（０.５Ａ／ｃｍ２）であった。１０分間電解
通電後、電解槽の水溶液を４００ｃｃ／Ｈの割合で貯液
槽１６に送り、同時に第１プロセスの集液室６から同量
の水溶液を電解槽に送入した。貯液送１６の水溶液をポ
ンプ１８により第１プロセスの送液槽７を通して給液室
５に送り、土壌の処理液として循環使用した。これら一
連の操作を連続的に行い、電解開始後計５時間通電し
た。Second Process The aqueous solution in the liquid collection chamber described above was fed into an electrolytic cell for electrolysis. The electrodes used were graphite for the anode and ordinary steel for the cathode, and both had a width of 110 mm and a length of 150 mm. The electrodes were energized with a gap of 10 mm. The energization conditions were a voltage of about 4 V and a current of 75 A (0.5 A / cm 2). After electrolysis for 10 minutes, the aqueous solution in the electrolytic bath was sent to the liquid storage tank 16 at a rate of 400 cc / H, and at the same time, the same amount of the aqueous solution was sent into the electrolytic bath from the liquid collecting chamber 6 of the first process. The aqueous solution stored in the liquid storage 16 was sent to the liquid supply chamber 5 through the liquid supply tank 7 of the first process by the pump 18 and was circulated and used as the soil treatment liquid. These series of operations were continuously performed, and electricity was supplied for 5 hours after the start of electrolysis.
【００２１】通電後の循環水溶液中の六価クロム濃度は
０. ０５ｍｌ／ｌ以下となった。また土壌中の六価クロ
ムの濃度は０. ０５ｍｇ／ｋｇ以下であり、環境基準以
下となった。その後水溶液の循環を停止し、給液室５の
液を除き、通常の水を給液室５に４００ｃｃ／Ｈの割合
で注入し、土壌中の水溶液成分を分離するように通電し
た。The hexavalent chromium concentration in the circulating aqueous solution after electrification became 0.05 ml / l or less. The concentration of hexavalent chromium in the soil was 0.05 mg / kg or less, which was below the environmental standard. After that, the circulation of the aqueous solution was stopped, the liquid in the liquid supply chamber 5 was removed, and normal water was injected into the liquid supply chamber 5 at a rate of 400 cc / H, and electricity was supplied to separate the aqueous solution components in the soil.
【００２２】１時間通電後注水も停止して、通電は継続
し、土中水分をできるだけ抜き出すようにして、第１プ
ロセスで処理を開始する前の通電状態であった１０Ｖ，
１７ｍＡと元の土壌水分での同程度の電気抵抗のもとで
の電流値１７ｍＡ（処理中は水分が多く抵抗が低いため
に電流は３５ｍＡと大きかったが、水分が少なくなるに
したがって電流値は低下する）になるまで１０Ｖでの通
電を続行し、完全修復とした。After 1 hour of energization, water injection was stopped, energization was continued, and water in the soil was extracted as much as possible, and the energized state was 10 V before starting the treatment in the first process.
Current value of 17 mA under the same electrical resistance of 17 mA and the original soil moisture (current was large at 35 mA due to high water content and low resistance during treatment, but current value decreased as water content decreased) It continued to be energized at 10 V until it became lower), and the repair was completed.
【００２３】（実施例２）ベンゼンで汚染された活性汚
泥（ベンゼン濃度２００ｍｇ／ｋｇ）のベンゼン除去を
行った。 第１プロセス 実施例１における土壌を上記活性汚泥に代え、電流を３
０ｍＡ（０. ４３ｍＡ／ｃｍ２）、処理液を単なる水と
した以外は実施例１と同様にして処理をした。集液水を
電解槽に送りながら、約１０分間処理を続け、電解槽の
水溶液が約１００ｃｃとなったところで、第２プロセス
の電解を開始した。(Example 2) Benzene was removed from activated sludge (benzene concentration 200 mg / kg) contaminated with benzene. First Process The soil in Example 1 was replaced with the activated sludge, and the electric current was changed to 3
The treatment was carried out in the same manner as in Example 1 except that the treatment liquid was 0 mA (0.43 mA / cm 2) and the treatment liquid was simply water. While the collected water was sent to the electrolysis tank, the treatment was continued for about 10 minutes, and when the aqueous solution in the electrolysis tank reached about 100 cc, electrolysis of the second process was started.
【００２４】第２プロセス 電解槽は実施例１と同じものを用い、電圧約４Ｖ、電流
５３Ａ（０. ３５３Ａ／ｃｍ２）にして、第１プロセス
の集液水を電解した。電解開始後は連続的に水を４５０
ｃｃ／Ｈの割合で第１プロセスと第２プロセス間を連続
的に循環させ、約５時間通電した。Second process The same electrolytic cell as in Example 1 was used, and the voltage of about 4 V and the current of 53 A (0.353 A / cm 2) were applied to electrolyze the collected water of the first process. After starting electrolysis, water is continuously added to 450
The first process and the second process were continuously circulated at a ratio of cc / H, and electricity was supplied for about 5 hours.
【００２５】５時間通電後の循環水中のベンゼン濃度は
０. ０１ｍｇ／ｌ以下、活性汚泥中では０. ０１ｍｇ／
ｋｇ以下となり、環境基準以下を達成できた。The benzene concentration in the circulating water after being energized for 5 hours was less than 0.01 mg / l, and in activated sludge was 0.01 mg / l.
It became less than kg, and was able to achieve below the environmental standard.
【００２６】なおベンゼンＣ６Ｈ６が第２プロセスで電
気分解されるのは陽極近傍での電解酸化及び陰極近傍で
の電解還元によるものであり、次の反応式で示される。 陽極近傍での電解酸化 Ｃ６Ｈ６ ＋ １５（Ｏ） ＝ ３Ｈ２Ｏ ＋ ６ＣＯ
２ 陰極近傍での電解還元 Ｃ６Ｈ６ ＋ ６（Ｈ） ＝ ３Ｃ２Ｈ４Benzene C6H6 is electrolyzed in the second process by electrolytic oxidation near the anode and electrolytic reduction near the cathode, which is represented by the following reaction formula. Electrolytic oxidation near the anode C6H6 + 15 (O) = 3H2O + 6CO
2 Electrolytic reduction near the cathode C6H6 + 6 (H) = 3C2H4
【００２７】[0027]
【発明の効果】本発明は有害物質を含む土壌や汚泥等の
処理において、従来は有害物質を分離除去する適切な技
術が見あたらなかったが、電気浸透現象等を利用した電
気化学的処理とその後の処理液の電解とを組み合わせる
ことにより、複雑な装置を使用したり、有害物質の種類
によって装置を変えることなく、処理することができ、
しかもクローズドシステムにより有害物質を系外に出す
ことがない等優れた効果を有する。また土壌、汚泥等を
取り出すことなく、そのままの状態で有害物質等を分離
除去して、浄化処理することもできる。INDUSTRIAL APPLICABILITY In the present invention, in the treatment of soil, sludge, etc. containing harmful substances, no suitable technique for separating and removing harmful substances has hitherto been found. By combining with the electrolysis of the treatment liquid, it is possible to perform treatment without using a complicated device or changing the device depending on the type of harmful substance,
In addition, the closed system has excellent effects such as not releasing harmful substances out of the system. Further, it is also possible to separate and remove harmful substances and the like without removing the soil and sludge and to carry out a purification treatment.
【図１】本発明方法の実施に使用される装置の１例を示
す概略図である。FIG. 1 is a schematic view showing an example of an apparatus used for carrying out the method of the present invention.
１ 電気化学的処理槽 ２ 土壌 ３ 陽極 ４ 陰極 ５ 給液室 ６ 集液室 ７ 送液槽 １３ 電解槽 １４ 陽極 １５ 陰極 １６ 貯液槽 １７ 循環パイプ １８ ポンプ ３１ 小孔 ４１ 小孔 1 Electrochemical treatment tank 2 Soil 3 Anode 4 Cathode 5 Liquid supply chamber 6 Liquid collection chamber 7 Liquid feed tank 13 Electrolysis tank 14 Anode 15 Cathode 16 Storage tank 17 Circulation pipe 18 Pump 31 Small hole 41 Small hole
Claims (5)
該被処理物から分離ないし除去する物質を液体の存在下
に前記両極間を電気化学的作用により液体と共に移動さ
せて集液し、該集液を電気分解することを特徴とする電
気化学的処理法。1. An object to be treated is interposed between an anode and a cathode,
An electrochemical treatment characterized in that a substance to be separated or removed from the object to be treated is moved together with the liquid by an electrochemical action in the presence of a liquid to collect the liquid, and the collected liquid is electrolyzed. Law.
介在させ、陽極部及び陰極部に給液室及び集液室を設
け、被処理物に前記集液室から液体を供給し、被処理物
から分離ないし除去する物質を電気化学的作用により液
体と共に両極間を移動させて集液室に導き、該集液を電
気分解することを特徴とする電気化学的処理法。2. An object to be processed is interposed between a liquid-permeable anode and a cathode, a liquid supply chamber and a liquid collection chamber are provided in an anode part and a cathode part, and a liquid is supplied to the object to be processed from the liquid collection chamber. Then, the substance to be separated or removed from the object to be treated is moved between both electrodes together with the liquid by an electrochemical action to be introduced into a liquid collecting chamber, and the liquid collecting is electrolyzed.
体を給液室に回送して液体を循環させることからなる請
求項２記載の電気化学的処理法。3. The electrochemical treatment method according to claim 2, wherein the collected liquid is fed into an electrolytic cell, and the electrolyzed liquid is sent to a liquid supply chamber to circulate the liquid.
である請求項１又は２記載の電気化学的処理法。4. The electrochemical treatment method according to claim 1, wherein the electrochemical action is electrophoresis or electroosmosis.
又は２記載の電気化学的処理法。5. The object to be treated is soil or sludge.
Or the electrochemical treatment method described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7110103A JPH08281247A (en) | 1995-04-11 | 1995-04-11 | Electrochemical treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7110103A JPH08281247A (en) | 1995-04-11 | 1995-04-11 | Electrochemical treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08281247A true JPH08281247A (en) | 1996-10-29 |
Family
ID=14527122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7110103A Pending JPH08281247A (en) | 1995-04-11 | 1995-04-11 | Electrochemical treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08281247A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100336868B1 (en) * | 1998-06-10 | 2002-08-28 | 최관영 | Method for removing continuously ions in organic solid waste resources using electric field |
| US6605203B1 (en) | 1998-12-03 | 2003-08-12 | Agency Of Industrial Science And Technology | Electrode apparatus |
| JP2008307497A (en) * | 2007-06-18 | 2008-12-25 | Chem Grouting Co Ltd | Viscous soil cleaning method |
| JP2012239937A (en) * | 2011-05-16 | 2012-12-10 | Daiwa House Industry Co Ltd | System for processing contaminated soil and method for processing contaminated soil |
-
1995
- 1995-04-11 JP JP7110103A patent/JPH08281247A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100336868B1 (en) * | 1998-06-10 | 2002-08-28 | 최관영 | Method for removing continuously ions in organic solid waste resources using electric field |
| US6605203B1 (en) | 1998-12-03 | 2003-08-12 | Agency Of Industrial Science And Technology | Electrode apparatus |
| JP2008307497A (en) * | 2007-06-18 | 2008-12-25 | Chem Grouting Co Ltd | Viscous soil cleaning method |
| JP2012239937A (en) * | 2011-05-16 | 2012-12-10 | Daiwa House Industry Co Ltd | System for processing contaminated soil and method for processing contaminated soil |
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