JP3107187B2 - Electrode plate for separating harmful metals in sludge and separator using the same - Google Patents

Electrode plate for separating harmful metals in sludge and separator using the same

Info

Publication number
JP3107187B2
JP3107187B2 JP06239572A JP23957294A JP3107187B2 JP 3107187 B2 JP3107187 B2 JP 3107187B2 JP 06239572 A JP06239572 A JP 06239572A JP 23957294 A JP23957294 A JP 23957294A JP 3107187 B2 JP3107187 B2 JP 3107187B2
Authority
JP
Japan
Prior art keywords
sludge
electrode plate
ferrite
electrode
separated
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
Application number
JP06239572A
Other languages
Japanese (ja)
Other versions
JPH0874086A (en
Inventor
泰信 梶原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishigaki Co Ltd
Original Assignee
Ishigaki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishigaki Co Ltd filed Critical Ishigaki Co Ltd
Priority to JP06239572A priority Critical patent/JP3107187B2/en
Publication of JPH0874086A publication Critical patent/JPH0874086A/en
Application granted granted Critical
Publication of JP3107187B2 publication Critical patent/JP3107187B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Landscapes

  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Treatment Of Sludge (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、下水汚泥等に含まれ
る重金属等の有害金属分離除去するため電極板並び
にその分離除去装置に関する。
BACKGROUND OF THE INVENTION This invention relates to an electrode plate and the separating device for separating off toxic metals such as heavy metals contained in the sewage sludge or the like.

【0002】[0002]

【従来の技術】従来、下水場等で発生する汚泥は、その
大部分が埋立、焼却等によって処分されているが、一
方、資源有効利用、環境保護の面から、コンポスト等に
して再資源化の研究もなされてる。
2. Description of the Related Art Conventionally, most of the sludge generated in sewage treatment plants is disposed of by landfilling or incineration, but on the other hand, from the viewpoint of effective use of resources and environmental protection, it is recycled as compost. Research is also being done.

【0003】[0003]

【発明が解決しようとする課題】然しながら、上述の焼
却処分やコンポスト化するにしても最も問題となるの
は、汚泥中に含まれる有害金属である。すなわち、この
有害金属は、焼却する場合も埋立するにしても汚泥から
分離除去することができない。現状では、埋立て投棄等
をする場合に溶出するのを防止する程度である。
However, the most problematic incineration or composting is the harmful metal contained in the sludge. That is, this harmful metal cannot be separated and removed from sludge even when incinerated or buried. At present, it is only to prevent elution in the case of landfill disposal.

【0004】[0004]

【課題を解決するための手段】この発明は、上述のよう
な汚泥中の有害な金属を特殊な電極板を用いて電解によ
って分離するようにしたものであって、その要旨とする
ところは、芯部を磁石で構成し、その磁石の表面を鉄で
覆った電極板を構成し、この電極板を電解槽に多数並列
するとともに、この電極板の極変換ができるようにした
ものである。
SUMMARY OF THE INVENTION The present invention is intended to separate harmful metals in sludge as described above by electrolysis using a special electrode plate. An electrode plate having a core portion made of a magnet and the surface of the magnet covered with iron is formed. A large number of the electrode plates are arranged in parallel with the electrolytic cell, and the electrode plate can be pole-converted.

【0005】[0005]

【作用】この発明に係る電極板は芯部に磁石を用いてい
るので、通電することによって、電解によって生成した
フエライト(重金属数と鉄の化合物)が電極表面に高濃
度に集まり、電気的に引きつけられる有害金属イオンと
の接触頻度が高くなり、フエライトの結晶が大きく成長
する。
Since the electrode plate according to the present invention uses a magnet in the core, the ferrite (the compound of the number of heavy metals and iron) generated by the electrolysis collects at a high concentration on the electrode surface by energizing, and is electrically connected. The frequency of contact with attracted harmful metal ions increases, and ferrite crystals grow larger.

【0006】また、通電することによって電極面には、
フエライト以外の物質もスケールとして付着するが、こ
の物質は、極***換を行なうことによって電極面から剥
離する。このとき、フエライトは磁石によって吸引され
て電極面に残留し、その純度が上昇する。すなわち、汚
泥中の重金属がフエライトとなって分離される。
[0006] In addition, by energizing the electrode surface,
Substances other than ferrite also adhere as scale, but this substance is separated from the electrode surface by performing polarity exchange. At this time, the ferrite is attracted by the magnet and remains on the electrode surface, and its purity increases. That is, heavy metals in the sludge are separated as ferrite.

【0007】そして、このように電極面で大きく成長し
たフエライトは、電解効率を上げるためになされている
汚泥の撹拌流によって剥離する。すなわち、この発明で
は、汚泥中の有害金属類を電解によってフエライトと
し、そのフエライトと他の來雑物質を極性変換によって
電極面で分離し、フエライトのみを成長させて電極面か
ら剥離するものであり、フエライト状態となった重金属
類は磁性を有し、磁気分離装置を用いて簡単に分離する
ことができるものである。以下、図面に随って、この発
明を具体的に説明する。
[0007] Ferrite which has grown greatly on the electrode surface in this manner is separated by the agitated flow of sludge which is made to increase the electrolysis efficiency. That is, in the present invention, harmful metals in the sludge are converted into ferrite by electrolysis, the ferrite and other foreign substances are separated on the electrode surface by polarity conversion, and only the ferrite is grown and separated from the electrode surface. The heavy metals in the ferrite state have magnetism and can be easily separated using a magnetic separation device. Hereinafter, the present invention will be specifically described with reference to the drawings.

【0008】[0008]

【実施例】図1は、この発明に係る電極板1の縦断面図
であり、芯板1aを磁石(例えばゴム磁石)で構成し、
その表裏に鉄電極1bを配設している。そして、図2に
示すようにこのように構成した電極板1を電解槽2内に
多数配列している。符号3は、電解用の電源であり、符
号4は、極性の変換装置、5は汚泥の供給口、6は電解
汚泥の取出口である。尚、電解によって分離したフエラ
イトを回収するための磁気回収装置は、図示を省略して
いるが、この磁気回収装置は電解槽内の出口部分に設け
ても、また、電解槽2と別体に設けてもよい。
FIG. 1 is a longitudinal sectional view of an electrode plate 1 according to the present invention, in which a core plate 1a is composed of a magnet (for example, a rubber magnet).
Iron electrodes 1b are arranged on the front and back. Then, as shown in FIG. 2, a large number of the electrode plates 1 configured as described above are arranged in the electrolytic cell 2. Reference numeral 3 is a power supply for electrolysis, reference numeral 4 is a polarity converter, 5 is a sludge supply port, and 6 is an electrolytic sludge outlet. Although a magnetic recovery device for recovering ferrite separated by electrolysis is not shown, the magnetic recovery device may be provided at an outlet portion in the electrolytic cell, or may be provided separately from the electrolytic cell 2. It may be provided.

【0009】この発明は、上述のように構成してあり、
供給口5から供給された汚泥は、電極板1に通電するこ
とによって、生成したフエライトが電極(+極)に集ま
り、汚泥中の重金属イオンとの接触頻度が高くなり、電
極表面でフエライトが成長する。
The present invention is configured as described above,
When the sludge supplied from the supply port 5 is energized to the electrode plate 1, the generated ferrite is collected on the electrode (+ pole), the frequency of contact with heavy metal ions in the sludge increases, and ferrite grows on the electrode surface. I do.

【0010】同時に、電極の表面には、フエライト以外
の物質もスケールとして付着するが、このスケールは、
電極板1の極性変換をすることで、電極板から反発され
て剥離される。このとき、電極表面に集ったフエライト
は、電極板の芯材が磁石1aで構成してあるので、剥離
することなく、スケールのみが剥離することで益々純度
が高まり成長する。
At the same time, a substance other than ferrite adheres to the surface of the electrode as a scale.
When the polarity of the electrode plate 1 is changed, the electrode plate 1 is repelled and separated from the electrode plate. At this time, since the core material of the electrode plate is composed of the magnet 1a , the purity of the ferrite gathered on the electrode surface is further increased by separating only the scale without separating, thereby increasing the purity.

【0011】そして、このようにして電極表面で成長し
たフエライトは、ある一定以上に成長すると、電解を促
進するために電解槽2内に流れている撹拌流によって電
極面から剥離し、電解汚泥内に合流する。尚、この電極
面から剥離するフエライトの成長度は、電極板1の吸引
力と電極槽2内の撹拌流速によって決定することができ
るものである。
When the ferrite grown on the electrode surface in this manner grows beyond a certain level, the ferrite is separated from the electrode surface by the stirring flow flowing in the electrolytic bath 2 to promote electrolysis, and the ferrite in the electrolytic sludge is removed. To join. The degree of growth of the ferrite separated from the electrode surface can be determined by the suction force of the electrode plate 1 and the stirring flow rate in the electrode tank 2.

【0012】このようにして、電解汚泥中にフエライト
として混合された重金属は、磁性を有するので、磁気回
収装置によって、電解汚泥と簡単に分離することができ
るものである。このようにして重金属類が分離された汚
泥は、脱水機等によって水分を分離して、コンポスト
して再利用することも、投棄しても有害金属が溶出する
こともないものである。
The heavy metal mixed as ferrite in the electrolytic sludge as described above has magnetism and can be easily separated from the electrolytic sludge by the magnetic recovery device. The sludge from which heavy metals have been separated in this manner is one in which water is separated by a dehydrator or the like, and is reused after being composted . It is.

【0013】[0013]

【発明の効果】このように、この発明は下水汚泥等に含
まれる重金属を鉄と磁石とよりなる電極板で電解して、
フエライト(鉄化合物)とし、電極板の磁気を利用して
成長させて汚泥から分離するようにしたものであって、
その装置、操作もに簡単であり、今後、益々と増大す
ると考えられる汚泥処理に用いて卓効を有するものであ
る。
As described above, according to the present invention, heavy metals contained in sewage sludge are electrolyzed by an electrode plate composed of iron and a magnet.
Ferrite (iron compound), which is grown using the magnetism of the electrode plate and separated from sludge,
The apparatus is simple to be an operation, and has a console effect with the future, increase believed to sludge treatment To more.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明に係る電極板の縦断面図である。FIG. 1 is a longitudinal sectional view of an electrode plate according to the present invention.

【図2】この発明に係る電極板を用いた電解装置の斜面
図である。
FIG. 2 is a perspective view of an electrolysis apparatus using the electrode plate according to the present invention.

【符号の説明】[Explanation of symbols]

1 電極板 1a 磁石 1b 鉄電極 2 電解槽 4 極性の変換装置 DESCRIPTION OF SYMBOLS 1 Electrode plate 1a Magnet 1b Iron electrode 2 Electrolyzer 4 Polarity converter

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 その芯部を磁石1aとし、その外面を
電極1bで覆ってなる汚泥中の有害金属類分離用の電極
板。
1. The core is a magnet 1a, and its outer surface is iron
An electrode plate for separating harmful metals in sludge covered with the electrode 1b.
【請求項2】 電解槽2中に請求項1記載の電極板1を
多数整列し、その電極板1への通電路に極性変換装置
4を設けてなる汚泥中の有害金属類の分離装置。
Wherein the electrode plate 1 according to claim 1, wherein in the electrolytic cell 2 and a number alignment, toxic metals separation device in the sludge formed by the polar converter 4 of the current path to the electrode plate 1 is provided .
JP06239572A 1994-09-06 1994-09-06 Electrode plate for separating harmful metals in sludge and separator using the same Expired - Fee Related JP3107187B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06239572A JP3107187B2 (en) 1994-09-06 1994-09-06 Electrode plate for separating harmful metals in sludge and separator using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06239572A JP3107187B2 (en) 1994-09-06 1994-09-06 Electrode plate for separating harmful metals in sludge and separator using the same

Publications (2)

Publication Number Publication Date
JPH0874086A JPH0874086A (en) 1996-03-19
JP3107187B2 true JP3107187B2 (en) 2000-11-06

Family

ID=17046797

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06239572A Expired - Fee Related JP3107187B2 (en) 1994-09-06 1994-09-06 Electrode plate for separating harmful metals in sludge and separator using the same

Country Status (1)

Country Link
JP (1) JP3107187B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104386892A (en) * 2014-11-21 2015-03-04 中国矿业大学 Device for removing heavy metal in excess sludge by using electrodynamic force technology
CN106966565A (en) * 2017-05-19 2017-07-21 北京东方同华科技股份有限公司 Electric osmose body refuse conditioner
CN112941572A (en) * 2021-01-28 2021-06-11 深圳市祺鑫环保科技有限公司 Electrode for electrolysis, method for producing same, and electrolysis device
CN114956511B (en) * 2022-05-30 2023-03-21 钱江水利开发股份有限公司 Sludge treatment equipment and method thereof

Also Published As

Publication number Publication date
JPH0874086A (en) 1996-03-19

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