JPH06246278A - Treatment of mine wastewater and hot spring water - Google Patents
Treatment of mine wastewater and hot spring waterInfo
- Publication number
- JPH06246278A JPH06246278A JP3542893A JP3542893A JPH06246278A JP H06246278 A JPH06246278 A JP H06246278A JP 3542893 A JP3542893 A JP 3542893A JP 3542893 A JP3542893 A JP 3542893A JP H06246278 A JPH06246278 A JP H06246278A
- Authority
- JP
- Japan
- Prior art keywords
- acidic
- hot spring
- sludge
- spring water
- mine wastewater
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、廃鉱山あるいは温泉か
ら排出される酸性坑廃水又は酸性温泉水を経済的に且つ
安全に処理する坑廃水又は温泉水の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating mine wastewater or hot spring water for economically and safely treating acidic mine wastewater or acidic hot spring water discharged from an abandoned mine or a hot spring.
【０００２】[0002]
【従来の技術】廃鉱山からの坑廃水あるいは温泉水は、
通常銅イオン、鉄イオン、カドミウムイオン、亜鉛イオ
ン等を含む、硫酸あるいは塩酸を主成分とするｐＨ３．
２程度の酸性水であって、このような坑廃水を処理する
方法としては、従来例えば、坑廃水を中和層で消石灰又
は炭酸カルシウムと接触させた後、凝集剤を添加して沈
澱池に溜め、次いでフィルタープレスを行なった後、脱
水ケーキとして堆積場に堆積させている。2. Description of the Related Art Mine wastewater or hot spring water from an abandoned mine is
A pH containing sulfuric acid or hydrochloric acid as a main component, which usually contains copper ions, iron ions, cadmium ions, zinc ions, etc.
As a method of treating such mine wastewater with about 2 acidic water, conventionally, for example, after contacting the mine wastewater with slaked lime or calcium carbonate in the neutralization layer, a flocculant is added to the sedimentation basin. After being stored and then subjected to filter pressing, it is deposited on the deposition site as a dehydrated cake.
【０００３】しかしながら、このような処理方法では、
高価な消石灰又は炭酸カルシウムを使用するため、中程
度の廃鉱山においても、坑廃水を処理するために数億円
／年の経費を要しているのが実状である。However, in such a processing method,
Since expensive slaked lime or calcium carbonate is used, even in a medium-sized abandoned mine, several hundred million yen / year is required to treat the mine drainage.
【０００４】一方、中和スラッジ及びセメント二次製品
排出汚泥物質は、産業廃棄物として処理されているのが
現状であって、その有効利用が望まれている。しかしな
がら、これらの物質は成分中に鉄イオンを含有するの
で、該鉄イオンの溶出が問題であり、しかも該鉄イオン
の存在により、中性付近では着色が生じるという問題が
ある。On the other hand, neutralized sludge and sludge substances discharged from secondary cement products are currently treated as industrial wastes, and their effective use is desired. However, since these substances contain iron ions in their components, there is a problem that the elution of the iron ions is a problem, and furthermore, the presence of the iron ions causes a problem of coloring near neutral.
【０００５】[0005]
【発明が解決しようとする課題】従って本発明の目的
は、従来産業廃棄物として廃棄されていた製鉄所等で発
生する中和スラッジ、セメント二次製品製造時の排出汚
泥物質を有効利用することができ、廃鉱山からの酸性坑
廃水又は酸性温泉水を、経済的に且つ安全に排水基準に
合致した濃度まで処理することが可能な坑廃水又は温泉
水の処理方法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to effectively utilize neutralized sludge generated in a steel plant or the like, which has been conventionally discarded as industrial waste, and sludge substances discharged during the production of a secondary cement product. It is possible to provide a method for treating mine wastewater or hot spring water that can economically and safely treat acidic mine wastewater or acidic hot spring water from an abandoned mine to a concentration that meets drainage standards.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、酸性坑
廃水又は酸性温泉水を中和スラッジ及び/又はセメント
二次製品製造時の排出汚泥物質により中和処理した水溶
液を、炭酸塩鉱物に接触させることを特徴とする坑廃水
又は温泉水の処理方法が提供される。According to the present invention, an aqueous solution obtained by neutralizing acidic mine wastewater or acidic hot spring water with neutralized sludge and / or sludge substances discharged during the production of a cement secondary product is used as a carbonate mineral. There is provided a method for treating mine wastewater or hot spring water, which is characterized in that the mine wastewater or hot spring water is contacted.
【０００７】以下本発明を更に詳細に説明する。The present invention will be described in more detail below.
【０００８】本発明の処理方法においては、まず酸性坑
廃水又は酸性温泉水を、製鉄所等で発生する中和スラッ
ジ及び/又はセメント二次製品製造時の排出汚泥物質に
より中和処理する。In the treatment method of the present invention, first, acidic mine drainage water or acidic hot spring water is neutralized with neutralized sludge generated in a steel mill or the like and / or sludge substances discharged during the production of secondary cement products.
【０００９】前記中和処理に用いる中和スラッジ及び/
又はセメント二次製品製造時の排出汚泥物質は、炭酸カ
ルシウム、水酸化カルシウム、その他セメント鉱物を主
成分とするものであって、共に鉄を含有する物質であ
る。Neutralization sludge used for the neutralization treatment and /
Alternatively, the discharged sludge substance at the time of manufacturing the secondary cement product is a substance containing calcium carbonate, calcium hydroxide, and other cement minerals as main components and both containing iron.
【００１０】前記中和処理を行なうには、通常の中和処
理槽等において、酸性坑廃水又は酸性温泉水中に、前記
中和スラッジ及び/又はセメント二次製品製造時の排出
汚泥物質を添加し、撹拌すれば良く、その添加量は、酸
性坑廃水又は酸性温泉水が中性になるまで添加すれば良
い。この中和処理では、坑廃水又は温泉水中の硫酸ある
いは塩酸と、中和スラッジ及び/又はセメント二次製品
製造時の排出汚泥物質中に含有される鉄とが反応し、Fe
SO4、Fe2(SO4)3、FeCl2又はFeCl3が生じる。To carry out the neutralization treatment, the neutralization sludge and / or the sludge substance discharged during the production of the cement secondary product is added to the acidic mine drainage water or the acidic hot spring water in an ordinary neutralization treatment tank or the like. It suffices to stir, and the amount of addition may be added until the acidic mine wastewater or the acidic hot spring water becomes neutral. In this neutralization treatment, sulfuric acid or hydrochloric acid in mine wastewater or hot spring water reacts with neutralized sludge and / or iron contained in discharged sludge substances during the production of secondary cement products, and Fe
SO 4 , Fe 2 (SO 4 ) 3 , FeCl 2 or FeCl 3 is produced.
【００１１】本発明の処理方法では、次に前記中和処理
して発生した中性の着色した水溶液を、好ましくは強ア
ルカリ処理等を行なわずに、炭酸塩鉱物に接触させる。
該炭酸塩鉱物としては、特に限定されず、例えばＣａＣ
Ｏ3を主成分とするカルサイト、アラゴナイト、ヴァテ
ライト等；炭酸マグネシウム；ドロマイト(CaMg(CO3)2)
等を挙げることができ、特に好ましくはコーラル(サン
ゴ化石)、多孔質のアラゴナイト等を挙げることができ
る。また前記炭酸塩鉱物の粒径は、０．０１〜３０ｃ
ｍ、特に０．１〜５ｃｍであるのが好ましい。In the treatment method of the present invention, the neutral colored aqueous solution generated by the neutralization treatment is then contacted with the carbonate mineral, preferably without the strong alkali treatment.
The carbonate mineral is not particularly limited, and for example, CaC
O 3 -based calcite, aragonite, vaterite, etc .; magnesium carbonate; dolomite (CaMg (CO 3 ) 2 )
And the like, and particularly preferably coral (fossil coral), porous aragonite, and the like. The particle size of the carbonate mineral is 0.01 to 30c.
It is preferably m, particularly 0.1 to 5 cm.
【００１２】前記中和処理した水溶液を炭酸塩鉱物に接
触させるには、例えば炭酸塩鉱物を充填した処理槽中を
所定時間で通過するようにする方法等により実施するこ
とができ、この際の炭酸塩鉱物に対する中和処理した水
溶液の接触時間は、０．５分以上、特に５〜３０分とな
るようにするのが好ましい。該接触により、炭酸塩鉱物
と、中和処理した水溶液中のFeSO4、Fe2(SO4)3、FeCl2
又はFeCl3が反応し、 FeSO4＋CaCO3→FeCO3＋CaSO4、Fe2(SO4)3＋3CaCO3→Fe2
(CO3)3＋3CaSO4 FeCl2＋CaCO3→FeCO3＋CaCl2又は2FeCl3＋3CaCO3→2FeC
O3＋3CaCl2の反応が生じる。この反応により、鉄はFeCO
3又はFe2(CO3)3として沈澱するので、炭酸塩鉱物と接触
した後の中和処理した水溶液は、着色も消失して排水基
準に合致した濃度となる。The contact of the neutralized aqueous solution with the carbonate mineral can be carried out by, for example, a method of passing the carbonate mineral through a treatment tank filled with the carbonate mineral for a predetermined time. The contact time of the neutralized aqueous solution with the carbonate mineral is preferably 0.5 minutes or more, particularly preferably 5 to 30 minutes. By the contact, carbonate minerals and FeSO 4 , Fe 2 (SO 4 ) 3 , FeCl 2 in the neutralized aqueous solution
Or FeCl 3 reacts, and FeSO 4 + CaCO 3 → FeCO 3 + CaSO 4 , Fe 2 (SO 4 ) 3 + 3CaCO 3 → Fe 2
(CO 3) 3 + 3CaSO 4 FeCl 2 + CaCO 3 → FeCO 3 + CaCl 2 or 2FeCl 3 + 3CaCO 3 → 2FeC
A reaction of O 3 + 3CaCl 2 occurs. By this reaction, iron becomes FeCO
Since it precipitates as 3 or Fe 2 (CO 3 ) 3 , the neutralized aqueous solution after contacting with the carbonate mineral also loses its coloration and has a concentration that meets the wastewater standards.
【００１３】[0013]
【発明の効果】本発明の坑廃水又は温泉水の処理方法で
は、現在産業廃棄物として処理されている中和スラッ
ジ、セメント二次製品製造時の排出汚泥物質を利用する
ので、経済的、且つ環境的にも有用であり、更に炭酸塩
鉱物により処理するので、酸性坑廃水又は酸性温泉水
を、低コストで排水基準に合致した濃度にまで適切に処
理することができる。INDUSTRIAL APPLICABILITY In the method for treating mine wastewater or hot spring water of the present invention, neutralized sludge, which is currently treated as industrial waste, and sludge substances discharged during the production of secondary cement products are utilized, which is economical and Since it is environmentally useful and is treated with carbonate minerals, acidic mine wastewater or acidic hot spring water can be appropriately treated at a low cost to a concentration meeting drainage standards.
【００１４】[0014]
【実施例】以下本発明を実施例により更に詳細に説明す
るが、本発明はこれに限定されるものではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
【００１５】[0015]
【実施例１】硫酸系でｐＨ３．５の鉄イオン（３３ｐｐ
ｍ）、銅イオン（０．０９ｐｐｍ）、カドミウムイオン
（０．０９ｐｐｍ）及び亜鉛イオン（２．４ｐｐｍ）を
含む坑廃水に、ヒューム管製作時に生じたセメント系ス
ラッジを添加・撹拌して中和処理を行なった。この際生
じた中和上澄液中には、FeSO4及びFe2(SO4)3が９．８ｐ
ｐｍ含有されていた。次いで粒径１〜３ｍｍのコーラル
５００ｇを、直径３ｃｍのガラスのカラムに充填し、前
記中和処理水溶液を１０ｍｌ／秒の流速で通過させたと
ころ、通過水溶液中の銅イオン、カドミウムイオン、亜
鉛イオンは、検出限界以下であり、また鉄イオン濃度は
０．１ｐｐｍ以下であった。Example 1 Sulfuric acid-based iron ions with pH 3.5 (33 pp
m), copper ions (0.09ppm), cadmium ions (0.09ppm) and zinc ions (2.4ppm), and the cement sludge generated during fume tube production is added and stirred to neutralize the mine wastewater. Was done. FeSO 4 and Fe 2 (SO 4 ) 3 contained 9.8 p in the neutralized supernatant liquid generated at this time.
pm contained. Next, 500 g of coral having a particle diameter of 1 to 3 mm was packed in a glass column having a diameter of 3 cm, and the neutralized aqueous solution was passed through at a flow rate of 10 ml / sec. Was below the detection limit, and the iron ion concentration was below 0.1 ppm.
【００１６】[0016]
【実施例２】硫酸系でｐＨ３．０の鉄イオン（４６２ｐ
ｐｍ）、銅イオン（２３．８ｐｐｍ）、鉛イオン（０．
０３ｐｐｍ）及び砒素イオン（１．１２ｐｐｍ）を含む
坑廃水に、製鉄所の溶鉱炉から副生する中和スラッジを
添加・撹拌して中和処理を行なった以外は、実施例１と
同様に処理を行なったところ、通過水溶液中の銅イオ
ン、鉛イオン、砒素イオンは、検出限界以下であり、ま
た鉄イオン濃度は０．１ｐｐｍ以下であった。Example 2 Sulfuric acid-based pH 3.0 iron ions (462 p
pm), copper ions (23.8 ppm), lead ions (0.
(03 ppm) and arsenic ions (1.12 ppm) to the mine wastewater, except that neutralization sludge by-produced from the blast furnace of the steel mill was added and stirred to perform the neutralization treatment. As a result, copper ion, lead ion and arsenic ion in the passing aqueous solution were below the detection limit, and the iron ion concentration was 0.1 ppm or less.
【００１７】[0017]
【実施例３】ｐＨ１．２の秋田県玉川温泉水（塩酸系）
に、ヒューム管製作時に生じたセメント系スラッジを添
加・撹拌して中和処理を行なった。この際生じた中和上
澄液中には、２価の鉄イオンが１８．３ｐｐｍ含有され
ていた。次いで粒径１〜３ｍｍのコーラル５００ｇを、
直径３ｃｍのガラスのカラムに充填し、前記中和処理水
溶液を１０ｍｌ／秒の流速で通過させたところ、通過水
溶液中の鉄イオン濃度は０．１ｐｐｍ以下であった。[Example 3] Tamagawa hot spring water (hydrochloric acid type) with a pH of 1.2 in Akita Prefecture
Then, the cement sludge generated at the time of manufacturing the fume tube was added and stirred for neutralization. The neutralized supernatant liquid generated at this time contained 18.3 ppm of divalent iron ions. Next, 500 g of coral having a particle size of 1 to 3 mm,
When packed in a glass column having a diameter of 3 cm and passing the neutralized aqueous solution at a flow rate of 10 ml / sec, the iron ion concentration in the passed aqueous solution was 0.1 ppm or less.
Claims (1)
ジ及び/又はセメント二次製品製造時の排出汚泥物質に
より中和処理した水溶液を、炭酸塩鉱物に接触させるこ
とを特徴とする坑廃水又は温泉水の処理方法。1. A mine wastewater characterized by contacting an aqueous solution obtained by neutralizing acidic mine wastewater or acidic hot spring water with neutralized sludge and / or sludge substances discharged during the production of a secondary cement product, to contact with a carbonate mineral. Or hot spring water treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3542893A JPH06246278A (en) | 1993-02-24 | 1993-02-24 | Treatment of mine wastewater and hot spring water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3542893A JPH06246278A (en) | 1993-02-24 | 1993-02-24 | Treatment of mine wastewater and hot spring water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06246278A true JPH06246278A (en) | 1994-09-06 |
Family
ID=12441596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3542893A Pending JPH06246278A (en) | 1993-02-24 | 1993-02-24 | Treatment of mine wastewater and hot spring water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06246278A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002038506A3 (en) * | 2000-11-08 | 2002-08-01 | Mbt Holding Ag | Self-indicating neutralizing compositions |
| JP2015150497A (en) * | 2014-02-14 | 2015-08-24 | 日本コンクリート工業株式会社 | Neutralizer and production method thereof |
| JP2018122224A (en) * | 2017-01-31 | 2018-08-09 | 国立大学法人東北大学 | Processing method for acidic hot spring water or acidic mine drainage and sediment produced by the same method |
| JP2021020164A (en) * | 2019-07-27 | 2021-02-18 | 三菱マテリアル株式会社 | Lead-containing pit external water treatment method |
| JP2021020163A (en) * | 2019-07-27 | 2021-02-18 | 三菱マテリアル株式会社 | Lead-containing pit external water treatment method |
-
1993
- 1993-02-24 JP JP3542893A patent/JPH06246278A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002038506A3 (en) * | 2000-11-08 | 2002-08-01 | Mbt Holding Ag | Self-indicating neutralizing compositions |
| JP2015150497A (en) * | 2014-02-14 | 2015-08-24 | 日本コンクリート工業株式会社 | Neutralizer and production method thereof |
| JP2018122224A (en) * | 2017-01-31 | 2018-08-09 | 国立大学法人東北大学 | Processing method for acidic hot spring water or acidic mine drainage and sediment produced by the same method |
| JP2021020164A (en) * | 2019-07-27 | 2021-02-18 | 三菱マテリアル株式会社 | Lead-containing pit external water treatment method |
| JP2021020163A (en) * | 2019-07-27 | 2021-02-18 | 三菱マテリアル株式会社 | Lead-containing pit external water treatment method |
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