JP2012192312A - Adsorbent, device for recovery of heavy metal, and device for regeneration of adsorbent - Google Patents

Adsorbent, device for recovery of heavy metal, and device for regeneration of adsorbent Download PDF

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JP2012192312A
JP2012192312A JP2011056561A JP2011056561A JP2012192312A JP 2012192312 A JP2012192312 A JP 2012192312A JP 2011056561 A JP2011056561 A JP 2011056561A JP 2011056561 A JP2011056561 A JP 2011056561A JP 2012192312 A JP2012192312 A JP 2012192312A
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adsorbent
heavy metal
metal
water
treated
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Maki Saito
真喜 齊藤
Kenji Takeuchi
賢治 竹内
Takahiro Soma
孝浩 相馬
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Toshiba Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

PROBLEM TO BE SOLVED: To selectively recover desired heavy metal from wastewater.SOLUTION: An adsorbent is produced by mixing clay mineral, metal containing trivalent cations, and leaf mold containing corrosive acid at a predetermined ratio.

Description

本発明の実施形態は、廃水からの重金属の回収に利用する吸着剤、重金属回収装置及び吸着剤再生装置に関する。   Embodiments described herein relate generally to an adsorbent, a heavy metal recovery apparatus, and an adsorbent regeneration apparatus that are used for recovering heavy metals from wastewater.

従来から、排水処理では凝集沈殿の後に得られた汚泥を処理する方法が主流であった。工場の廃水の処理でも、汚濁物質を凝集沈殿等させ、汚泥として廃棄する方法が主流であった。   Conventionally, in wastewater treatment, a method of treating sludge obtained after coagulation sedimentation has been the mainstream. Even in the treatment of factory wastewater, the mainstream method is to coagulate and settle pollutants and dispose as sludge.

しかしながら、工場からの廃水には通常の生活排水とは異なる物質を含んでいることがあり、そのような物質は生活排水と同一の方法で容易に処理できないこともある。また、工場からの廃水は年々負担が増加しており、更に全国的に排水基準も高くなっており、廃水の処理は困難になる傾向にある。   However, wastewater from factories may contain substances that are different from normal domestic wastewater, and such substances may not be easily treated in the same way as domestic wastewater. In addition, wastewater from factories is increasing the burden year by year, and the drainage standards are becoming higher nationwide, which makes it difficult to treat wastewater.

さらに、工場からの排水には多量の重金属を含んでいるものあり、このような廃水から得られた汚泥には重金属が含まれるが、汚泥から重金属のみを回収することは困難であった。仮に、廃水から重金属のみを選択的に回収することができれば、その後、再利用しやすくなる。   Furthermore, some waste water from factories contains a large amount of heavy metals, and sludge obtained from such wastewater contains heavy metals, but it was difficult to recover only heavy metals from the sludge. If only heavy metals can be selectively recovered from wastewater, it will be easier to reuse.

特開２００３−６２４５８号公報JP 2003-62458 A 特開２００２−３５５２２号公報JP 2002-35522 A

上記課題に鑑み、廃水から、所望の重金属を選択的に回収する吸着剤、重金属回収装置及び吸着剤再生装置を提供する。   In view of the above problems, an adsorbent, a heavy metal recovery apparatus, and an adsorbent regeneration apparatus that selectively recover a desired heavy metal from wastewater are provided.

実施形態に係る吸着剤は、粘土鉱物と、３価の陽イオンを含む金属と、腐食酸を含む腐葉土とが所定の割合で混合されて造形されたことを特徴とする。   The adsorbent according to the embodiment is characterized in that a clay mineral, a metal containing a trivalent cation, and humus containing a corrosive acid are mixed at a predetermined ratio and shaped.

第１実施形態に係る吸着剤による金属の吸着について説明する図である。It is a figure explaining adsorption | suction of the metal by the adsorbent which concerns on 1st Embodiment. 第２実施形態に係る金属回収装置について説明する図である。It is a figure explaining the metal collection | recovery apparatus which concerns on 2nd Embodiment. 第３実施形態に係る吸着剤再生装置について説明する図である。It is a figure explaining the adsorbent reproduction | regeneration apparatus which concerns on 3rd Embodiment.

以下に、図面を用いて本発明の実施形態に係る吸着剤、金属回収装置及び吸着剤再生装置について説明する。実施形態に係る吸着剤は、工場廃水等の有用な重金属を含む被処理水から、選択的に吸着する。また、実施形態に係る金属回収装置は、この吸着剤を利用して有用な重金属を含む被処理水から、重金属を選択的に回収する。さらに、実施形態に係る吸着剤再生装置は、重金属を吸着した吸着剤から重金属を剥離し、吸着剤を再生させるとともに、重金属を分離する。   Hereinafter, an adsorbent, a metal recovery device, and an adsorbent regeneration device according to an embodiment of the present invention will be described with reference to the drawings. The adsorbent according to the embodiment selectively adsorbs from water to be treated containing useful heavy metals such as factory wastewater. Moreover, the metal collection | recovery apparatus which concerns on embodiment selectively collect | recovers heavy metals from the to-be-processed water containing a useful heavy metal using this adsorption agent. Furthermore, the adsorbent regeneration apparatus according to the embodiment peels heavy metal from the adsorbent that has adsorbed heavy metal, regenerates the adsorbent, and separates heavy metal.

〈第１実施形態〉
第１実施形態に係る吸着剤は、粘土鉱物と、３価の陽イオンを含む金属と、腐食酸を含む腐葉土とが粒状等に造形される。なお、吸着剤は、吸着剤と重金属を含む被処理水が接触することができれば良いため吸着剤の形状は粒状に限定する必要はないが、被処理水と接触する面積が大きい形状であることが望ましい。すなわち、多孔体や単孔体のような開気孔を有する形状でもよい。 <First Embodiment>
In the adsorbent according to the first embodiment, a clay mineral, a metal containing a trivalent cation, and humus containing a corrosive acid are shaped into a granular shape. Note that the adsorbent need only be in contact with the water to be treated containing the adsorbent and heavy metal, so the shape of the adsorbent need not be limited to a granular shape, but has a large area in contact with the water to be treated. Is desirable. That is, it may be a shape having open pores such as a porous body or a single pore body.

例えば、図１（a）に示すように、粘土鉱物は表面に負の電荷を持ち、陽イオン（特に、重金属イオン）がひきつけられる。したがって、被処理水に銅イオン（Ｃｕ2+）、亜鉛イオン（Ｚｎ2+）、鉛イオン（Ｐｂ2+）等の重金属イオンを含んでいるとき、図１（ｂ）に示すように、粘土鉱物の負の電荷にひきつけられた陽イオンである重金属イオンは、鉱物の層間に存在していた他の陽イオンと置換されて粘土鉱物に吸着される。 For example, as shown in FIG. 1 (a), a clay mineral has a negative charge on the surface and attracts cations (particularly heavy metal ions). Accordingly, when the water to be treated contains heavy metal ions such as copper ions (Cu 2+ ), zinc ions (Zn 2+ ), and lead ions (Pb 2+ ), as shown in FIG. Heavy metal ions, which are cations attracted to the negative charge of the mineral, are replaced by other cations that existed between the layers of the mineral and are adsorbed by the clay mineral.

ここで、吸着剤に粘土鉱物を利用するのは、粘土鉱物が重金属の吸着性が高いためである。粘土鉱物には、例えば、バーミキュライトを利用することができる。   Here, the reason why the clay mineral is used as the adsorbent is that the clay mineral has high adsorptivity to heavy metals. As the clay mineral, for example, vermiculite can be used.

また、３価の陽イオンを含む金属は、凝集剤として用いる。すなわち、３価の陽イオンを含む金属は、凝集剤として広く一般に用いられており、この３価の陽イオンを含む金属が重金属と結合し、難溶性にすることができるためである。３価の陽イオンを含む金属には、アルミニウムイオンや鉄イオンを含む凝集剤を利用することができ、具体的には、ＰＡＣ（Poly Aluminum Chloride）等が挙げられる。   A metal containing a trivalent cation is used as a flocculant. That is, a metal containing a trivalent cation is widely used as an aggregating agent, and the metal containing a trivalent cation can be combined with a heavy metal to be hardly soluble. As the metal containing a trivalent cation, an aggregating agent containing aluminum ion or iron ion can be used, and specific examples include PAC (Poly Aluminum Chloride).

さらに、腐葉土は、腐葉土に含まれる腐食酸により、重金属の粘土鉱物の層間への吸着性を高くするとともに、重金属イオンと粘土鉱物とを強固な結合を持ちやすくする性質があるためである。   Furthermore, humic soil has the property that the corrosive acid contained in the humic soil increases the adsorptivity of the heavy metal between the clay minerals and makes it easy to have a strong bond between the heavy metal ions and the clay mineral.

ここで、粘土鉱物、３価の陽イオンを含む金属及び腐葉土の各量は、粘土鉱物をｘ（０．２≦ｘ０．７）、３価の陽イオンを含む金属をｙ（０．０１≦ｙ≦０．１）、腐葉土をｚ（０．１≦ｚ≦０．３）とし、ｘ＋ｙ＋ｚ＝１を満たす割合で決定されて吸着剤が生成される。   Here, each amount of the clay mineral, the metal containing trivalent cation and the humus is represented by x (0.2 ≦ x0.7) for the clay mineral and y (0.01 ≦ 10) for the metal containing the trivalent cation. y ≦ 0.1), the humus is set to z (0.1 ≦ z ≦ 0.3), and the ratio satisfying x + y + z = 1 is determined and the adsorbent is generated.

上述した第１実施形態に係る吸着剤では、表面に重金属を含む被処理水を接触させることで、吸着剤を構成する粘土鉱物、３価の陽イオンを含む金属及び腐食酸それぞれの効果により、より多くの被処理水から選択的に重金属を回収することができる。   In the adsorbent according to the first embodiment described above, by contacting the water to be treated containing heavy metal on the surface, the clay mineral constituting the adsorbent, the metal containing a trivalent cation, and the corrosive acid, respectively, Heavy metals can be selectively recovered from more treated water.

〈第２実施形態〉
第２実施形態に係る金属回収装置では、内部に第１実施形態で上述した吸着剤を備えている。この重金属回収装置は、重金属を含む被処理水が流入されると、吸着剤に重金属を吸着させて被処理水から重金属を回収する。 Second Embodiment
The metal recovery apparatus according to the second embodiment includes the adsorbent described above in the first embodiment. In this heavy metal recovery device, when the water to be treated containing heavy metal flows in, the heavy metal is adsorbed by the adsorbent to recover the heavy metal from the water to be treated.

図２（ａ）に示すように、実施形態に係る金属回収装置１は、上流部１１と下流部１２とを備えている。上流部１１は、被処理水を流入する流入管２１に接続され、下流部１２は、被処理水を流出する流出管２２に接続されている。   As shown in FIG. 2A, the metal recovery device 1 according to the embodiment includes an upstream portion 11 and a downstream portion 12. The upstream part 11 is connected to an inflow pipe 21 into which the water to be treated flows, and the downstream part 12 is connected to an outflow pipe 22 through which the water to be treated flows out.

金属回収装置１の上流部１１には、吸着剤Ａの上流側に配置され、被処理水の流入から吸着剤Ａを保護する保護手段である綿１３と、吸着剤Ａの下流側に配置され、吸着剤Ａを内部に保持する保持手段である綿１３及びフィルタ１５とが配置されている。   The upstream portion 11 of the metal recovery apparatus 1 is disposed on the upstream side of the adsorbent A, and is disposed on the downstream side of the adsorbent A with cotton 13 that is a protective means for protecting the adsorbent A from the inflow of water to be treated. The cotton 13 and the filter 15 which are holding means for holding the adsorbent A inside are disposed.

吸着剤Ａは、第１実施形態で上述したように、例えば、粒状等に造形されているものの、圧力によって崩れやすい性質がある。また、この吸着剤Ａには、流入管２１からの被処理水の水流を受け、大きな圧力が加わって崩れやすくなる。したがって、被処理水による圧力から吸着剤Ａを保護して吸着剤Ａが崩れるのを防止するため、金属回収装置１では、吸着剤Ａの上流側に保護手段として綿１３を設置している。なお、被処理水による圧力から吸着剤を保護するものであれば、綿１３に限らず、スポンジ等他の素材を保護手段として利用してもよい。   As described above in the first embodiment, the adsorbent A is, for example, shaped like a granule, but has a property that is easily broken by pressure. In addition, the adsorbent A receives a water flow of the water to be treated from the inflow pipe 21 and is easily collapsed due to a large pressure. Therefore, in order to protect the adsorbent A from the pressure caused by the water to be treated and prevent the adsorbent A from collapsing, the metal recovery apparatus 1 is provided with cotton 13 as a protection means upstream of the adsorbent A. In addition, as long as it protects the adsorbent from the pressure due to the water to be treated, not only the cotton 13 but also other materials such as a sponge may be used as the protection means.

金属回収装置１では、吸着剤Ａの流出を防止し、吸着剤Ａを内部に保持するため、吸着剤Ａの下流側に保持手段として、綿１４とフィルタ１５とを設置している。フィルタ１５のみによって吸着剤Ａを保持した場合、吸着剤Ａが崩れた場合には被処理水とともに崩れた吸着剤Ａが金属回収装置１から流出管２２に流出するおそれがある。また、吸着剤Ａは、長時間、被処理水に曝されていると崩れやすい性質がある。したがって、図２（ａ）に示す例では、フィルタ１５によって上流側に綿１４を保持し、崩れた吸着剤Ａも内部に保持できるようにしている。   In the metal recovery apparatus 1, in order to prevent the adsorbent A from flowing out and hold the adsorbent A inside, cotton 14 and a filter 15 are installed as holding means on the downstream side of the adsorbent A. When the adsorbent A is held only by the filter 15, if the adsorbent A collapses, the adsorbent A collapsed together with the water to be treated may flow out from the metal recovery apparatus 1 to the outflow pipe 22. Further, the adsorbent A has a property of being easily broken when exposed to the water to be treated for a long time. Accordingly, in the example shown in FIG. 2A, the cotton 14 is held upstream by the filter 15 so that the broken adsorbent A can also be held inside.

なお、図２（ｂ）に示す例では、フィルタ１５は、格子状であるが、綿１４を保持することができれば、他の形状であってもよい。また、吸着剤Ａが崩れた場合であっても、金属回収装置１の内部に吸着剤Ａを保持することができるものであれば、綿１３に限らず、スポンジ等の他の素材を保持手段として使用してもよい。   In the example shown in FIG. 2B, the filter 15 has a lattice shape, but may have another shape as long as the cotton 14 can be held. Further, even if the adsorbent A is broken, as long as the adsorbent A can be held inside the metal recovery apparatus 1, not only the cotton 13 but also other materials such as sponges are held. May be used as

また、図２（ａ）に示す例では、円柱形状の上流部１１と下流部１２とから成る金属回収装置１を用いて説明したが、保護手段に保護され、保持手段に保持される吸着剤Ａを内部に備えるものであれば、その構成は限定されない。   In the example shown in FIG. 2 (a), the metal recovery device 1 including the cylindrical upstream portion 11 and the downstream portion 12 has been described. However, the adsorbent protected by the protection means and held by the holding means. As long as A is provided inside, the configuration is not limited.

この金属回収装置１は、凝集沈殿等の廃水処理等、他の水処理よりも前段に設置することで、後段の水処理における負荷が軽減される。すなわち、重金属が除去された後の水処理では、重金属を含む被処理水を処理する場合よりも、処理で必要な薬品を軽減できる等、処理に必要な負担が軽減される。なお、この金属回収装置１より前段にＢＡＣやＧＡＣ等の生物活性炭によって有機物が処理されていれば、金属回収装置１及びその後の水処理の負担を軽減することができる。   The metal recovery apparatus 1 is installed at a preceding stage with respect to other water treatments such as wastewater treatment such as coagulation sedimentation, thereby reducing the load on the subsequent water treatment. That is, in the water treatment after the heavy metal is removed, the load necessary for the treatment can be reduced, such as reduction of chemicals necessary for the treatment, compared to the case of treating the water to be treated containing heavy metal. In addition, if the organic substance is processed with biological activated carbon, such as BAC and GAC, before this metal recovery apparatus 1, the burden of the metal recovery apparatus 1 and subsequent water treatment can be reduced.

上述した第２実施形態に係る金属回収装置１では、重金属を吸着可能な吸着剤Ａを使用して被処理水から選択的に重金属を回収することができる。   In the metal recovery apparatus 1 according to the second embodiment described above, heavy metal can be selectively recovered from the water to be treated using the adsorbent A capable of adsorbing heavy metal.

〈第３実施形態〉
第３実施形態に係る吸着剤再生装置３では、第２実施形態に係る金属回収装置１で重金属を吸着した吸着剤Ａから重金属を分離させ、吸着剤Ａの吸着能力を再生させる。例えば、図３に示すように、吸着剤再生装置３は、吸着剤Ａから重金属を剥離させる溶液を供給する溶液供給手段３１と、吸着剤Ａが投入される通水管３２と、通水管３２から流出した溶液を受ける水槽３３を有している。 <Third Embodiment>
In the adsorbent regeneration apparatus 3 according to the third embodiment, the heavy metal is separated from the adsorbent A that has adsorbed heavy metal by the metal recovery apparatus 1 according to the second embodiment, and the adsorption capacity of the adsorbent A is regenerated. For example, as shown in FIG. 3, the adsorbent regenerator 3 includes a solution supply unit 31 that supplies a solution for removing heavy metal from the adsorbent A, a water conduit 32 into which the adsorbent A is charged, and a water conduit 32. It has the water tank 33 which receives the outflowed solution.

金属回収装置１内で重金属を吸着したことによって、重金属の回収率が低下した吸着剤Ａは、図３に示すように、フィルタ等によって吸着剤Ａを保持可能な通水管３２に投入される。通水管３２に吸着剤Ａを投入後、溶液供給手段３１が吸着剤Ａから重金属を剥離させる溶液を供給し、吸着剤Ａから重金属を剥離させる。このとき、吸着剤Ａに所定時間、所定量の溶液を通水することで、重金属は、吸着剤Ａ側から溶液側に移動する。例えば、吸着剤Ａから重金属を剥離させる溶液としては、強酸性水又は強塩基水溶液を利用することができる。   As shown in FIG. 3, the adsorbent A whose heavy metal recovery rate is reduced by adsorbing heavy metal in the metal recovery apparatus 1 is put into a water pipe 32 that can hold the adsorbent A by a filter or the like. After the adsorbent A is introduced into the water pipe 32, the solution supply means 31 supplies a solution for stripping heavy metal from the adsorbent A and strips heavy metal from the adsorbent A. At this time, heavy metal moves from the adsorbent A side to the solution side by passing a predetermined amount of solution through the adsorbent A for a predetermined time. For example, as the solution for peeling heavy metal from the adsorbent A, strong acidic water or strong base aqueous solution can be used.

通水管３２の下流側には、重金属が溶出した溶液を受ける水槽３３が配置されており、通水管３２から流出した溶液は、この水槽３３で貯水される。この水槽３３で貯水された溶液から重金属を分離することで、分離した重金属を再利用することができる。例えば、水槽３３内に電極３３１，３３２を配置し、水槽３３に貯水された溶液を電気分解することで、電極（陰極３３１）に付着する重金属を回収することができる。被処理水から回収した重金属は、有限である金属資源であるため、再利用することは、資源の少ない我国には、資源の有用な利用とすることができる。   A water tank 33 that receives a solution from which heavy metals are eluted is disposed on the downstream side of the water pipe 32, and the solution that flows out of the water pipe 32 is stored in the water tank 33. By separating heavy metals from the solution stored in the water tank 33, the separated heavy metals can be reused. For example, the electrodes 331 and 332 are disposed in the water tank 33, and the solution stored in the water tank 33 is electrolyzed, whereby heavy metals attached to the electrode (cathode 331) can be recovered. Since heavy metals recovered from the water to be treated are finite metal resources, reuse can be a useful use of resources for our country with few resources.

ここで、吸着剤再生装置３は、上述した金属回収装置１とは独立したものとして説明していたが、金属回収装置１の一部として設けられていてもよい。   Here, although the adsorbent regeneration device 3 has been described as being independent of the metal recovery device 1 described above, the adsorbent regeneration device 3 may be provided as a part of the metal recovery device 1.

なお、重金属が剥離された通水管３２内の吸着剤Ａは、通水管３２から取り出して再利用することができる。このとき、吸着剤Ａが崩れたことにより、通水管３２内の吸着剤Ａの形状が金属回収装置１内で使用した形状と異なっていた場合、再び所望の形状に造形して再利用することができる。   The adsorbent A in the water pipe 32 from which the heavy metal has been peeled can be taken out from the water pipe 32 and reused. At this time, if the shape of the adsorbent A in the water pipe 32 is different from the shape used in the metal recovery device 1 due to the collapse of the adsorbent A, it is formed again into a desired shape and reused. Can do.

上述した第３実施形態に係る吸着剤再生装置３では、重金属を吸着した吸着剤Ａから重金属を剥離し、剥離した重金属を回収し、資源として重金属を再利用することができる。   In the adsorbent regeneration apparatus 3 according to the third embodiment described above, the heavy metal can be peeled from the adsorbent A that has adsorbed the heavy metal, the peeled heavy metal can be recovered, and the heavy metal can be reused as a resource.

本発明の各実施形態を説明したが、これらの実施形態は例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、書き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although the embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, rewrites, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

Ａ…吸着剤
１…金属回収装置
１１…上流部
１２…下流部
１３…綿
１４…綿
１５…フィルタ
２１…流入管
２２…流出管
３１…溶液供給手段
３２…通水管
３３…水槽 A ... Adsorbent 1 ... Metal recovery device 11 ... Upstream part 12 ... Downstream part 13 ... Cotton 14 ... Cotton 15 ... Filter 21 ... Inflow pipe 22 ... Outflow pipe 31 ... Solution supply means 32 ... Water pipe 33 ... Water tank

Claims (4)

粘土鉱物と、３価の陽イオンを含む金属と、腐食酸を含む腐葉土とが所定の割合で混合されて造形された重金属の吸着剤。   A heavy metal adsorbent formed by mixing a clay mineral, a metal containing a trivalent cation, and humus containing a corrosive acid at a predetermined ratio. 重金属を含む被処理水から重金属を回収する重金属回収装置であって、
粘土鉱物と、３価の陽イオンを含む金属と、腐食酸を含む腐葉土とが所定の割合で混合されて造形された重金属の吸着剤と、
前記吸着剤の上流側に配置され、被処理水の流入から当該吸着剤を保護する保護手段と、
前記吸着剤の下流側に配置され、当該吸着剤を内部に保持する保持手段と、
を備えることを特徴とする重金属回収装置。 A heavy metal recovery device that recovers heavy metal from water to be treated containing heavy metal,
A heavy metal adsorbent formed by mixing a clay mineral, a metal containing a trivalent cation, and humus containing a corrosive acid at a predetermined ratio;
Protective means disposed upstream of the adsorbent and protecting the adsorbent from the inflow of treated water;
A holding means arranged downstream of the adsorbent and holding the adsorbent inside;
A heavy metal recovery apparatus comprising: 生物活性炭槽の後段に配置され、当該生物活性炭槽で有機物が回収された被処理水が導入される請求項２に記載の重金属回収装置。   The heavy metal recovery apparatus according to claim 2, which is disposed downstream of the biological activated carbon tank and into which treated water from which organic matter has been recovered is introduced in the biological activated carbon tank. 重金属を吸着した吸着剤に、当該吸着剤から重金属を剥離する為の溶液を供給する溶液供給手段を備えることを特徴とする吸着剤再生装置。   An adsorbent regeneration apparatus comprising: a solution supply unit that supplies a solution for separating heavy metal from an adsorbent to the adsorbent that has adsorbed heavy metal.
JP2011056561A 2011-03-15 2011-03-15 Adsorbent, device for recovery of heavy metal, and device for regeneration of adsorbent Pending JP2012192312A (en)

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Publication number Priority date Publication date Assignee Title
KR20230028820A (en) * 2021-08-19 2023-03-03 건국대학교 산학협력단 Heavy metal adsorbents using material mixed natural and synthetic clay and manufacturing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028814A (en) * 1983-07-25 1985-02-14 Satoo Morimoto Purifying agent of sewage or the like
JPS6161635A (en) * 1984-09-04 1986-03-29 Power Reactor & Nuclear Fuel Dev Corp Radium adsorbent, its manufacture, and use thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028814A (en) * 1983-07-25 1985-02-14 Satoo Morimoto Purifying agent of sewage or the like
JPS6161635A (en) * 1984-09-04 1986-03-29 Power Reactor & Nuclear Fuel Dev Corp Radium adsorbent, its manufacture, and use thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230028820A (en) * 2021-08-19 2023-03-03 건국대학교 산학협력단 Heavy metal adsorbents using material mixed natural and synthetic clay and manufacturing method thereof
KR102557720B1 (en) 2021-08-19 2023-07-24 건국대학교 산학협력단 Heavy metal adsorbents using material mixed natural and synthetic clay and manufacturing method thereof

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