JPH07185500A - Treatment of soot - Google Patents
Treatment of sootInfo
- Publication number
- JPH07185500A JPH07185500A JP5331223A JP33122393A JPH07185500A JP H07185500 A JPH07185500 A JP H07185500A JP 5331223 A JP5331223 A JP 5331223A JP 33122393 A JP33122393 A JP 33122393A JP H07185500 A JPH07185500 A JP H07185500A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- soot
- elution
- silicate
- added
- 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.)
- Granted
Links
Landscapes
- Fire-Extinguishing Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は煤塵の処理方法に係り、
特に、煤塵を容易かつ効率的しかも安全に処理して、処
理物からの重金属の溶出を確実に防止する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating dust,
In particular, the present invention relates to a method for easily, efficiently and safely treating soot and dust, and reliably preventing the elution of heavy metals from a treated material.
【０００２】[0002]
【従来の技術】一般家庭ゴミや産業廃棄物を焼却場で焼
却すると、燃焼排ガスに同伴して灰が飛散する。この飛
灰を捕捉するために、従来、バグフィルタや電気集塵機
が設置され、集塵された煤塵は埋立て、地盤工事などに
有効利用されている。2. Description of the Related Art When general household waste or industrial waste is incinerated at an incinerator, ash is scattered along with combustion exhaust gas. In order to capture this fly ash, a bag filter and an electric dust collector have been conventionally installed, and the collected soot dust is effectively used for landfill and ground construction.
【０００３】ところで、こうして得られる煤塵中には、
揮発性金属化合物由来の重金属が含有されているため、
煤塵を埋立て等に利用するに当っては、煤塵中の重金属
の溶出を防止する処理を施す必要がある。By the way, in the soot and dust thus obtained,
Since it contains heavy metals derived from volatile metal compounds,
When using the dust for landfilling, it is necessary to perform a treatment to prevent the elution of heavy metals in the dust.
【０００４】従来、煤塵の重金属溶出防止方法として
は、溶融、セメント固化、酸或いはその他の溶媒による
抽出、薬剤処理などが提案されている。このうち、薬剤
処理は、薬剤処理設備を用いて十分な量の薬剤を均質に
練り混ぜ、重金属が溶出しないよう化学的に安定した状
態にする方法である。従来、この方法に使用される薬剤
としては、硫化ソーダ、水硫化ソーダ、石灰と硫酸第一
鉄との併用、液体キレート、リン酸と石灰との併用、ケ
イ酸ナトリウム・多硫化アンモニウム・ジエチルジチル
カルバミン酸ナトリウムの混合液とポルトランドセメン
ト・アルミノケイ酸塩の処理液がある（特公昭５９−５
３５８号公報、特公昭５９−２１６７５号公報、特公昭
６０−３４４３６号公報、特開昭６３−２０５１９２号
公報）。Conventionally, as a method for preventing the elution of heavy metals from soot and dust, melting, cement solidification, extraction with an acid or other solvent, treatment with a chemical, etc. have been proposed. Of these, the chemical treatment is a method of uniformly kneading a sufficient amount of chemicals using a chemical treatment facility to chemically stabilize the chemicals so that heavy metals are not eluted. Conventionally, the agents used in this method are sodium sulfide, sodium hydrosulfide, a combination of lime and ferrous sulfate, a liquid chelate, a combination of phosphoric acid and lime, sodium silicate / ammonium polysulfide / diethyldityl. There is a mixed solution of sodium carbamate and a treatment solution of Portland cement / aluminosilicate (Japanese Patent Publication No. 59-5).
358, JP-B-59-21675, JP-B-60-34436, and JP-A-63-205192).
【０００５】[0005]
【発明が解決しようとする課題】上記従来の煤塵の処理
方法のうち、硫化ソーダ、水硫化ソーダ、液体キレー
ト、ケイ酸ナトリウム・多硫化アンモニウム・ジエチル
ジチルカルバミン酸ナトリウムの混合液とポルトランド
セメント・アルミノケイ酸塩の処理液は、 煤塵のｐＨが低い場合 煤塵と練り混ぜる際に、ｐＨ調整剤（塩鉄、ポリ
鉄、硫酸バンド、硫酸第一鉄）と接触した場合 処理灰の温度が高い場合 に、有害なＨ2 Ｓ，ＭＭ（メチルメルカプタン），ＤＭ
Ｓ（ジメチルサルファイド）やＤＭＤＳ（二硫化ジメチ
ル）、ＮＨ3 ガス等が発生するという問題がある。Among the conventional methods for treating dust as described above, sodium sulfide, sodium hydrosulfide, liquid chelate, a mixed solution of sodium silicate / ammonium polysulfide / sodium diethylditylcarbamate, and Portland cement / aluminosilicate are used. When the pH of soot dust is low, the acid salt treatment liquid is in contact with a pH adjuster (iron salt, polyiron, sulfuric acid band, ferrous sulfate) when kneading with soot dust When the temperature of treated ash is high , Harmful H 2 S, MM (methyl mercaptan), DM
There is a problem that S (dimethyl sulfide), DMDS (dimethyl disulfide), NH 3 gas, etc. are generated.
【０００６】また、石灰と硫酸第一鉄との併用では、処
理灰のｐＨが９〜１０であれば、重金属の溶出を防止す
ることができるが、ｐＨ９〜１０以外であると重金属の
溶出が起こり、このため、処理灰の最終処分地のｐＨ環
境により重金属が溶出する可能性が高いという欠点があ
る。Further, when lime and ferrous sulfate are used in combination, if the pH of the treated ash is 9 to 10, the elution of heavy metals can be prevented. Therefore, there is a drawback that heavy metals are likely to be eluted due to the pH environment of the final disposal site of the treated ash.
【０００７】また、リン酸と石灰との併用は、処理灰の
ｐＨが高い場合にはＰｂが溶出する傾向がある。Further, the combined use of phosphoric acid and lime tends to elute Pb when the pH of the treated ash is high.
【０００８】本発明は上記従来の問題点を解決し、有害
ガスを発生することなく、また、幅広いｐＨ範囲にて重
金属の溶出を確実に防止することができる煤塵の処理方
法を提供することを目的とする。The present invention solves the above-mentioned conventional problems and provides a method for treating soot and dust which does not generate harmful gas and can reliably prevent elution of heavy metals in a wide pH range. To aim.
【０００９】[0009]
【課題を解決するための手段】本発明の煤塵の処理方法
は、煤塵に、リン酸及び／又はリン酸塩と、ケイ酸及び
／又はケイ酸塩とを添加して混練することを特徴とす
る。The method for treating soot dust of the present invention is characterized in that phosphoric acid and / or phosphate and silicic acid and / or silicate are added to the soot dust and kneaded. To do.
【００１０】本発明において、リン酸としては正リン酸
や次亜リン酸、メタ亜リン酸、ピロ亜リン酸、正亜リン
酸、次リン酸、メタリン酸、ピロリン酸、三リン酸が挙
げられ、リン酸塩としては、これらのリン酸の塩、第１
リン酸塩、第２リン酸塩が挙げられる。特に、リン酸塩
としては、ナトリウム、カリウム等のアルカリ金属（Ｍ
+ ）とリン酸（ＰＯ4 3- ）とのモル比（Ｍ+ ／ＰＯ
4 3- ）が１〜４の範囲となるように用いるのが好まし
く、従って、例えばＭ+ ／ＰＯ4 3- が３のものを使用す
る場合、Ｍ3 ＰＯ4 を使用するか、又はＨ3 ＰＯ4 １モ
ルとＭＯＨ３モルを混合した組成物を使用するのが好ま
しい。本発明においては、特に、添加量やｐＨの上昇速
度等の点から、Ｍ+ ／ＰＯ4 3- ＝２〜４のものが好まし
い。In the present invention, examples of phosphoric acid include orthophosphoric acid, hypophosphorous acid, metaphosphorous acid, pyrophosphorous acid, orthophosphorous acid, hypophosphoric acid, metaphosphoric acid, pyrophosphoric acid and triphosphoric acid. As the phosphate, salts of these phosphoric acids,
Phosphates and secondary phosphates may be mentioned. In particular, as phosphates, alkali metals such as sodium and potassium (M
+ ) And phosphoric acid (PO 4 3- ) in molar ratio (M + / PO
4 3− ) is preferably in the range of 1 to 4, therefore, for example, when M + / PO 4 3− is 3, M 3 PO 4 is used or H 3 It is preferred to use a composition in which 1 mol of PO 4 and 3 mol of MOH are mixed. In the present invention, M + / PO 4 3- = 2 to 4 is particularly preferable from the viewpoints of the addition amount and the rate of pH increase.
【００１１】一方、ケイ酸としてはオルトケイ酸、メタ
ケイ酸、メタ二ケイ酸、メタ三ケイ酸、メタ四ケイ酸な
どを用いることができ、また、ケイ酸塩としては、ａＭ
2 Ｏ・ｎＳｉＯ2 （Ｍはアルカリ金属）と表したとき
に、ｎ＝０．５〜４，ａ＝１〜３のケイ酸塩が好まし
く、具体的にはメタケイ酸塩Ｎａ2 ＳｉＯ3 （ｎ＝１，
ａ＝１）、ジケイ酸塩Ｎａ2 Ｓｉ2 Ｏ5 （ｎ＝２，ａ＝
１）、オルトケイ酸塩Ｎａ4 ＳｉＯ4 （ｎ＝１／２，ａ
＝２）、ピロケイ酸塩Ｎａ6 Ｓｉ2 Ｏ7 （ｎ＝２／３，
ａ＝３）、水ガラスＮａ2 Ｏ・ｎＳｉＯ2 （ｎ＝２〜
４，ａ＝１）などを用いることができる。On the other hand, as silicic acid, orthosilicic acid, metasilicic acid, metadisilicic acid, metatrisilicic acid, metatetrasilicic acid and the like can be used, and as the silicate, aM
When expressed as 2 O · nSiO 2 (M is an alkali metal), a silicate having n = 0.5 to 4 and a = 1 to 3 is preferable, and specifically, a metasilicate Na 2 SiO 3 (n = 1,
a = 1), disilicate Na 2 Si 2 O 5 (n = 2, a =
1), orthosilicate Na 4 SiO 4 (n = 1/2, a
= 2), pyrosilicate Na 6 Si 2 O 7 (n = 2/3,
a = 3), water glass Na 2 O.nSiO 2 (n = 2 to
4, a = 1) or the like can be used.
【００１２】本発明において、リン酸及び／又はリン酸
塩の添加量は煤塵に対して３０重量％以下、好ましくは
２〜２０重量％、ケイ酸及び／又はケイ酸塩の添加量は
煤塵に対して３０重量％以下、好ましくは２〜２０重量
％とし、リン酸及び／又はリン酸塩と、ケイ酸及び／又
はケイ酸塩との添加量比は１：１０〜１０：１、特に２
〜８：８〜２とするのが好ましく、これらの添加量は処
理する煤塵の性状等に応じて適宜決定される。In the present invention, the amount of phosphoric acid and / or phosphate added is 30% by weight or less, preferably 2 to 20% by weight, based on soot dust, and the amount of silicic acid and / or silicate added to soot dust. On the other hand, the amount is 30% by weight or less, preferably 2 to 20% by weight, and the addition ratio of phosphoric acid and / or phosphate to silicic acid and / or silicate is 1:10 to 10: 1, especially 2
-8: 8-2 is preferable, and the addition amount of these is appropriately determined according to the properties of the soot dust to be treated.
【００１３】なお、リン酸及び／又はリン酸塩と、ケイ
酸及び／又はケイ酸塩との添加順序には特に制限はな
く、両薬剤を同時に添加しても、いずれか一方の薬剤を
先に添加した後、他方の薬剤を添加するようにしても良
い。また、これらの薬剤は粉末のまま用いても、水溶液
として用いても良い。There is no particular limitation on the order of addition of phosphoric acid and / or phosphate and silicic acid and / or silicate, and even if both drugs are added at the same time, either one of them will be added first. It is also possible to add the other drug after adding the drug. Further, these agents may be used as powders or as an aqueous solution.
【００１４】従って、リン酸及び／又はリン酸塩の粉末
とケイ酸及び／又はケイ酸塩の粉末とを予め混合して添
加したり、或いは、両粉末を別々に添加したり、或い
は、リン酸及び／又はリン酸塩とケイ酸及び／又はケイ
酸塩とを含む水溶液を添加したり、リン酸及び／又はリ
ン酸塩を含む水溶液とケイ酸及び／又はケイ酸塩を含む
水溶液とを同時に或いは別々に添加するなど、様々な添
加形態を採用できる。Therefore, the powder of phosphoric acid and / or phosphate and the powder of silicic acid and / or silicate are premixed and added, or both powders are separately added, or phosphorous is added. An aqueous solution containing acid and / or phosphate and silicic acid and / or silicate is added, or an aqueous solution containing phosphoric acid and / or phosphate and an aqueous solution containing silicic acid and / or silicate are added. Various addition forms can be adopted, such as simultaneous or separate addition.
【００１５】なお、本発明の方法においては、必要に応
じて、更にｐＨ調整剤として、塩化鉄、ポリ塩化鉄、硫
酸バンド、硫酸第一鉄などを用いても良い。また、セメ
ントを添加して固化しても良い。In the method of the present invention, if necessary, iron chloride, polyiron chloride, a sulfuric acid band, ferrous sulfate, etc. may be used as a pH adjusting agent. Also, cement may be added to solidify.
【００１６】本発明においては、リン酸及び／又はリン
酸塩と、ケイ酸及び／又はケイ酸塩とを所定割合で煤塵
に練り混ぜることにより容易かつ安全に処理を行って、
処理灰からの重金属の溶出を幅広いｐＨ範囲にわたって
確実に防止することができる。In the present invention, the phosphoric acid and / or phosphate and the silicic acid and / or silicate are kneaded in the dust at a predetermined ratio for easy and safe treatment.
Elution of heavy metals from treated ash can be reliably prevented over a wide pH range.
【００１７】このため、例えば、処理灰の最終処分地の
ｐＨが、酸性雨などにより低下した場合や、処理灰をセ
メントで固化するためｐＨの上昇が起こるような場合で
あっても、重金属の溶出を確実に防止することができ
る。Therefore, for example, even when the pH of the final disposal site of the treated ash is lowered by acid rain or the like, or when the treated ash is solidified with cement and the pH is increased, the heavy metal of Elution can be reliably prevented.
【００１８】[0018]
【作用】本発明においては、リン酸及び／又はリン酸塩
と、ケイ酸及び／又はケイ酸塩とを併用することによ
り、有害ガスを発生することなく、重金属の溶出を幅広
いｐＨ範囲で防止することを可能とする。In the present invention, the combined use of phosphoric acid and / or phosphate and silicic acid and / or silicate prevents the release of heavy metals in a wide pH range without generating harmful gas. It is possible to do.
【００１９】即ち、本発明で用いる薬剤には有害ガスを
発生する物質は含まれていないために、薬剤添加時に有
害ガスを発生するおそれがない。That is, since the drug used in the present invention does not contain a substance that generates a harmful gas, there is no possibility of generating a harmful gas when the drug is added.
【００２０】また、ケイ酸、ケイ酸塩は特に高ｐＨ領域
において、一方、リン酸、リン酸塩は特に低ｐＨ領域に
おいて、それぞれ重金属と溶解度の極めて低い化合物を
形成する。Further, silicic acid and silicate form compounds having extremely low solubility with heavy metals, respectively, especially in the high pH region, while phosphoric acid and phosphate form compounds having extremely low solubility, especially in the low pH region.
【００２１】このため、両薬剤を併用することにより、
幅広いｐＨ範囲において、重金属の溶出を確実に防止す
ることができる。Therefore, by using both drugs together,
It is possible to reliably prevent elution of heavy metals in a wide pH range.
【００２２】[0022]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明する。EXAMPLES The present invention will be described in more detail with reference to the following examples.
【００２３】実施例１ Ｙ清掃工場の飛灰（この飛灰の成分分析値は表１に示す
通りである。）５０ｇをビーカーに入れ、表２に示す薬
剤を各々表２に示す量添加し（Ｎｏ．５では添加せ
ず）、更に純水１０ｇ（飛灰に対して２０重量％）を加
え、スパーテルで５分間混練した。得られた混練物５０
ｇを採取してＨＣｌ又はＮａＯＨを加えて所定のｐＨに
調整した純水よりなる溶出液５００ｇに入れ、６時間振
盪した。この液を孔径１μｍのグラスペーパーフィルタ
ーで吸引濾過した後、濾液中の重金属濃度を測定し、結
果を図１（Ｐｂ濃度）及び図２（Ｃｄ濃度）に示した。Example 1 50 g of fly ash of Y cleaning factory (the component analysis values of this fly ash are as shown in Table 1) were placed in a beaker, and the chemicals shown in Table 2 were added in the amounts shown in Table 2. (No added in No. 5), 10 g of pure water (20% by weight with respect to fly ash) was further added, and the mixture was kneaded with a spatula for 5 minutes. Obtained kneaded product 50
g was taken, added to 500 g of an eluate consisting of pure water adjusted to a predetermined pH by adding HCl or NaOH, and shaken for 6 hours. This solution was suction filtered with a glass paper filter having a pore size of 1 μm, and the heavy metal concentration in the filtrate was measured. The results are shown in FIG. 1 (Pb concentration) and FIG. 2 (Cd concentration).
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 [Table 2]
【００２６】図１，２より次のことが明らかである。The following is clear from FIGS.
【００２７】即ち、ＨＣｌ又はＮａＯＨのｐＨ調整剤の
みの添加のＮｏ．５の場合には、Ｐｂ及びＣｄの溶出量
は共に多い。Ｎａ2 ＳｉＯ3 のみを添加したＮｏ．２の
場合には、ｐＨ１２までの高ｐＨ領域（ｐＨ８〜１２ま
での範囲）でＰｂの溶出量が少ないが、低ｐＨ領域での
ｐＨ溶出量が多く、また、Ｃｄの溶出量は比較的多い。
Ｎａ3 ＰＯ4 のみを添加したＮｏ．３の場合には、低ｐ
Ｈ領域でＰｂの溶出量が少ないが、高ｐＨ領域でのＰｂ
溶出量が比較的多い。また、Ｃａ（ＯＨ）2 とＦｅＳＯ
4 とを併用したＮｏ．４の場合には、薬剤無添加の場合
のＮｏ．５に比べて、ｐＨ溶出量は若干少ないが、Ｃｄ
溶出量についてはほぼ同等である。That is, in the case of adding only the pH adjusting agent of HCl or NaOH, No. In the case of 5, both the amounts of Pb and Cd eluted are large. No. 2 in which only Na 2 SiO 3 was added. In the case of 2, the elution amount of Pb is small in the high pH region up to pH 12 (range of pH 8 to 12), but the elution amount of pH is large in the low pH region, and the elution amount of Cd is relatively large. .
No. 3 in which only Na 3 PO 4 was added. In case of 3, low p
Elution amount of Pb is small in H region, but Pb in high pH region
The elution amount is relatively large. In addition, Ca (OH) 2 and FeSO
No. 4 used in combination with In the case of No. 4, No. Compared with 5, the pH elution amount is slightly less, but Cd
The elution amount is almost the same.
【００２８】これに対して、Ｎａ2 ＳｉＯ3 とＮａ3 Ｐ
Ｏ4 とを併用したＮｏ．１では、Ｐｂ，Ｃｄの溶出量を
共に広いｐＨ範囲にわたって低く抑えることができ、特
にＮａ3 ＰＯ4 のみを用いたＮｏ．３の場合に比べて、
溶出液濃度に影響を与えるリン成分添加量を半減した上
で、Ｐｂについてはより優れた効果を、また、Ｃｄにつ
いてはほぼ同等の効果を得ている。On the other hand, Na 2 SiO 3 and Na 3 P
No. which used together with O 4 . In No. 1, the elution amount of both Pb and Cd can be suppressed to be low over a wide pH range, and in particular, No. 3 using only Na 3 PO 4 was used. Compared to the case of 3,
After reducing the amount of the phosphorus component added that affects the concentration of the eluate by half, a more excellent effect was obtained for Pb and an almost equivalent effect was obtained for Cd.
【００２９】実施例２ Ｓ清掃工場の煤塵（この煤塵の成分分析値は表３に示す
通りである。）の加湿・混練機に、下記表４に示す添加
液を表４に示す量加えた。このときに発生するガスを、
加湿・混練機上部、加湿・混練機室内及び搬出トラック
上部でそれぞれ採取して分析し、結果を表５に示した。Example 2 To the moisturizing / kneading machine for soot dust (the component analysis value of this soot dust is as shown in Table 3) in the S cleaning plant, the additive liquid shown in Table 4 below was added. . The gas generated at this time is
The results are shown in Table 5, which were collected and analyzed in the upper part of the humidifying / kneading machine, the inside of the humidifying / kneading machine and the upper part of the carry-out truck.
【００３０】[0030]
【表３】 [Table 3]
【００３１】[0031]
【表４】 [Table 4]
【００３２】[0032]
【表５】 [Table 5]
【００３３】表４，５より明らかなように、キレートＡ
（Ｎｏ．７）ではＳ系のガスが発生し、キレートＢ（Ｎ
ｏ．８）ではＮＨ3 ガスが発生する。これに対して、Ｎ
ａ2ＨＰＯ4 とＮａ2 ＳｉＯ3 の併用（Ｎｏ．６）であ
れば、有害ガスの発生が殆どない。As is clear from Tables 4 and 5, Chelate A
In (No. 7), S-based gas is generated and chelate B (N
o. In 8), NH 3 gas is generated. On the other hand, N
If a 2 HPO 4 and Na 2 SiO 3 are used together (No. 6), almost no harmful gas is generated.
【００３４】実施例３ 表６記載の所定量の液体キレート又は本発明に係る薬剤
に酸、水、硫酸バンドをそれぞれ表６記載の量添加し、
所定温度における硫化水素ガスの発生量を、検知管にて
測定した。結果を表６に示す。Example 3 To a predetermined amount of the liquid chelate shown in Table 6 or the agent according to the present invention, acid, water, and sulfuric acid bands were added in the amounts shown in Table 6, respectively.
The amount of hydrogen sulfide gas generated at a predetermined temperature was measured with a detector tube. The results are shown in Table 6.
【００３５】[0035]
【表６】 [Table 6]
【００３６】表６より、キレート剤は、温度もしくはｐ
Ｈ条件により、有害ガスＨ2 Ｓが発生するが、本発明の
方法によれば、これらのガスが発生しないことがわか
る。From Table 6, the chelating agent is
It can be seen that, although H gas produces H 2 S under the H condition, these gases do not occur according to the method of the present invention.
【００３７】[0037]
【発明の効果】以上詳述した通り、本発明の煤塵の処理
方法によれば、有害ガスの発生を引き起こすことなく、
煤塵を安全に、容易かつ効率的に処理して、幅広いｐＨ
範囲において、重金属の溶出を確実に防止することがで
きる。As described in detail above, according to the method for treating soot and dust of the present invention, no harmful gas is generated,
Safe, easy and efficient treatment of soot and dust with a wide pH range
Within the range, elution of heavy metals can be reliably prevented.
【図１】実施例１におけるＰｂ溶出量の測定結果を示す
グラフである。FIG. 1 is a graph showing the measurement results of Pb elution amount in Example 1.
【図２】実施例１におけるＣｄ溶出量の測定結果を示す
グラフである。FIG. 2 is a graph showing the measurement results of Cd elution amount in Example 1.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 堀 好弘 東京都新宿区西新宿３丁目４番７号 栗田 工業株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshihiro Hori 3-4-7 Nishishinjuku, Shinjuku-ku, Tokyo Kurita Industry Co., Ltd.
Claims (1)
ケイ酸及び／又はケイ酸塩とを添加して混練することを
特徴とする煤塵の処理方法。1. Dust and phosphoric acid and / or phosphate,
A method for treating soot dust, which comprises adding silicic acid and / or silicate and kneading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33122393A JP3417026B2 (en) | 1993-12-27 | 1993-12-27 | Dust treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33122393A JP3417026B2 (en) | 1993-12-27 | 1993-12-27 | Dust treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07185500A true JPH07185500A (en) | 1995-07-25 |
| JP3417026B2 JP3417026B2 (en) | 2003-06-16 |
Family
ID=18241276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33122393A Expired - Lifetime JP3417026B2 (en) | 1993-12-27 | 1993-12-27 | Dust treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417026B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000202394A (en) * | 1997-08-27 | 2000-07-25 | Solvay Sa | Fume purification and production of aqueous sodium chloride solution |
| JP2009131726A (en) * | 2007-10-29 | 2009-06-18 | Jikco Ltd | Method of treating flue gas |
| JP2017518956A (en) * | 2014-05-02 | 2017-07-13 | レモンディス アクア ゲーエムベーハ アンド シーオー．ケージー | A method of purifying raw phosphoric acid (such as MGA acid) by adding ash derived from a waste incineration site, including the production of purified phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphate and metal salt solution. |
-
1993
- 1993-12-27 JP JP33122393A patent/JP3417026B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000202394A (en) * | 1997-08-27 | 2000-07-25 | Solvay Sa | Fume purification and production of aqueous sodium chloride solution |
| JP2009131726A (en) * | 2007-10-29 | 2009-06-18 | Jikco Ltd | Method of treating flue gas |
| JP2017518956A (en) * | 2014-05-02 | 2017-07-13 | レモンディス アクア ゲーエムベーハ アンド シーオー．ケージー | A method of purifying raw phosphoric acid (such as MGA acid) by adding ash derived from a waste incineration site, including the production of purified phosphoric acid, calcium sulfate, water-soluble calcium hydrogen phosphate and metal salt solution. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3417026B2 (en) | 2003-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2001509720A (en) | Stabilization of waste containing lead | |
| JP4470216B2 (en) | Treatment method for fluorine-containing solid waste | |
| JP5975130B1 (en) | Compound treatment agent for acid gas and heavy metal, and method for treating acid gas and heavy metal | |
| JP2007260613A (en) | Method of treating ashes containing heavy metal | |
| JP3417026B2 (en) | Dust treatment method | |
| JP3271534B2 (en) | Method for treating ash containing lead, hexavalent chromium, arsenic and selenium | |
| JP3228192B2 (en) | Treatment method for heavy metal-containing ash | |
| JP2008272591A (en) | Method for treating ashes containing heavy metal | |
| JP4258315B2 (en) | Processing method of collected ash of two-stage series dust collector | |
| JPH08155417A (en) | Method for treatment of alkali fly ash | |
| CN104138884B (en) | The insolubilizing agent of heavy metal and the insoluble method of heavy metal | |
| JP2013193039A (en) | Heavy metal fixing agent used for incineration fly ash and stabilization treatment method of the incineration fly ash | |
| JP3371516B2 (en) | Dust treatment method | |
| JPH0221311B2 (en) | ||
| JP3769791B2 (en) | Processing method for heavy metal-containing ash | |
| JP2000136371A (en) | Metal-treating agent | |
| JP4624583B2 (en) | Heavy metal solidifying agent and waste treatment method | |
| JP2008272580A (en) | Treatment method for heavy metals in waste ash | |
| JPH01262978A (en) | Method for immoblizing lead and cadmium in solid residue generated by incineration of waste using lime and phosphate | |
| JP4173206B2 (en) | Acid gas removing agent and method for producing the same | |
| JPH0217228B2 (en) | ||
| JPH11188331A (en) | Treatment method for heavy metal-containing ash | |
| JPH06328063A (en) | Waste stabilization agent and waste stabilization | |
| JPH10249316A (en) | Treatment of heavy metal-containing ash | |
| JP3598911B2 (en) | How to treat shredder dust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080411 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080411 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090411 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090411 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100411 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100411 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110411 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120411 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130411 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140411 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term |