JPH11290824A - Solid waste treatment agent and treatment of solid waste - Google Patents
Solid waste treatment agent and treatment of solid wasteInfo
- Publication number
- JPH11290824A JPH11290824A JP10318356A JP31835698A JPH11290824A JP H11290824 A JPH11290824 A JP H11290824A JP 10318356 A JP10318356 A JP 10318356A JP 31835698 A JP31835698 A JP 31835698A JP H11290824 A JPH11290824 A JP H11290824A
- Authority
- JP
- Japan
- Prior art keywords
- solid waste
- acid
- treatment
- present
- phosphorous acid
- 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
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、焼却灰、煤塵、鉱
滓、汚泥、土壌、シュレッダーダスト等の固体状廃棄物
中に存在する有害な金属、有機塩素化物等を無害化し、
その後の固体状廃棄物処理工程における取扱いを容易に
することのできる固体状廃棄物処理剤及び固体状廃棄物
の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detoxifies harmful metals and organic chlorinated substances present in solid waste such as incinerated ash, dust, slag, sludge, soil, shredder dust, etc.
The present invention relates to a solid waste treatment agent and a solid waste treatment method capable of facilitating handling in a subsequent solid waste treatment step.
【０００２】[0002]
【従来の技術】ゴミ焼却場等で生じる煤塵、鉱山から排
出される鉱滓、廃水処理の際に用いられる活性汚泥、汚
染された土壌等の固体状廃棄物中には種々の金属元素が
含有されており、水銀、カドミウム、鉛、亜鉛、銅、ク
ロム等の人体に有害な重金属元素が多量に含有されてい
る場合も多い。これら固体状廃棄物から金属が溶出する
と、地下水、河川、海水等が汚染される虞れがある。2. Description of the Related Art Various metallic elements are contained in solid waste such as dust generated in garbage incineration plants, slag discharged from mines, activated sludge used in wastewater treatment, and contaminated soil. And often contain a large amount of heavy metal elements harmful to the human body, such as mercury, cadmium, lead, zinc, copper, and chromium. When metals are eluted from these solid wastes, there is a possibility that groundwater, rivers, seawater, etc. will be contaminated.
【０００３】このため従来は、固体状廃棄物をセメント
で固めた後、埋め立てて処理する方法が採られていた
が、海水や雨水と接触した際にセメント壁を通して海水
中や土中に金属が溶出する虞れがあり、この方法は必ず
しも安全な処理方法とは言えなかった。また固体状廃棄
物に金属捕集剤を添加して金属を固定化した後、固体状
廃棄物をセメント等で固めて処理する方法も行われてい
る。[0003] Conventionally, therefore, a method has been adopted in which solid waste is solidified with cement and then buried in landfills. However, when it comes into contact with seawater or rainwater, metal is immersed in seawater or soil through the cement wall. There is a risk of elution, and this method was not always a safe treatment method. In addition, a method is also known in which a metal collector is added to solid waste to fix the metal, and then the solid waste is solidified with cement or the like for treatment.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら金属捕集
剤により固体状廃棄物中の金属を固定化する方法では、
金属捕集剤の固体状廃棄物への浸透力が低いことに起因
して、固体状廃棄物中の金属との反応性が必ずしも充分
ではなく、この結果、固体状廃棄物中に含まれる金属の
固定化が十分に行えない場合があった。また、金属捕集
剤では固体状廃棄物中に含有されているカルシウムを固
定化することは困難であり、固定化されていないカルシ
ウムは固体状廃棄物中から水中に溶出し易いため、金属
捕集剤で処理した固体状廃棄物を、更にセメント等で固
めて最終処分した場合でも、雨等に晒された際に、固定
化されていない固体状廃棄物中のカルシウムやセメント
壁内のカルシウムが溶出し易く、カルシウムが溶出する
とセメント壁が崩壊し易くなるとともに、固体状廃棄物
中で金属捕集剤によって固定化されていた他の金属も遊
離し易くなる虞がある。また従来は、多量のセメント等
を用いて固体状廃棄物を固めて処理することが必要であ
り、セメント等で固めた後の容積が必要以上に大きくな
り、その後の処理や移送において問題があった。However, the method of immobilizing the metal in the solid waste by the metal collecting agent is as follows.
Due to the low penetration of the metal trapping agent into the solid waste, the reactivity with the metal in the solid waste is not always sufficient, and as a result, the metal contained in the solid waste There was a case where immobilization of satisfactorily could not be performed. In addition, it is difficult to immobilize calcium contained in solid waste with a metal collecting agent, and calcium that is not immobilized easily elutes from solid waste into water. Even if the solid waste treated with the agglomerator is further solidified with cement or the like and finally disposed of, even if it is exposed to rain, etc., calcium in the unfixed solid waste and calcium in the cement wall Is easily eluted, and when calcium elutes, the cement wall is likely to collapse, and other metals immobilized by the metal collecting agent in the solid waste may be easily released. Conventionally, it is necessary to solidify and treat solid waste with a large amount of cement or the like, and the volume after solidifying with cement or the like becomes unnecessarily large, and there is a problem in the subsequent treatment and transfer. Was.
【０００５】更に、近年、ゴミ焼却の際にダイオキシン
類が発生することが大きな社会問題となっており、ゴミ
を焼却して生成した煤塵中にもダイオキシン類が含まれ
ている虞れがある。しかしながら、従来の処理方法では
煤塵中のダイオキシン類を無害化することは困難であっ
た。Further, in recent years, the generation of dioxins during incineration of garbage has become a major social problem, and there is a possibility that dioxins are contained in dust generated by incineration of garbage. However, it has been difficult to detoxify dioxins in dust using conventional treatment methods.
【０００６】本発明は上記の点に鑑みなされたもので、
固体状廃棄物中の有害金属やダイオキシン類等の有害物
質を確実に無害化処理することのできる固体状廃棄物処
理剤及び固体状廃棄物の処理方法を提供することを目的
とする。[0006] The present invention has been made in view of the above points,
An object of the present invention is to provide a solid waste treatment agent and a solid waste treatment method capable of reliably detoxifying harmful substances such as harmful metals and dioxins in solid waste.
【０００７】[0007]
【課題を解決するための手段】即ち本発明の固体状廃棄
物処理剤は、亜リン酸類及び／又は次亜リン酸類を含有
することを特徴とする。本発明の固体状廃棄物処理剤
は、亜リン酸類及び／又は次亜リン酸類とともに、アル
ミニウム化合物及び／又はチタン化合物を含有するもの
を包含する。また本発明の固体状廃棄物の処理方法は、
固体状廃棄物に、上記固体状廃棄物処理剤を添加して固
体状廃棄物を無害化することを特徴とする。本発明方法
において固体状廃棄物に固体状廃棄物処理剤を添加し、
１００〜１０００℃に加熱して処理することが好まし
い。That is, the solid waste treating agent of the present invention is characterized by containing phosphorous acid and / or hypophosphorous acid. The solid waste treatment agent of the present invention includes those containing an aluminum compound and / or a titanium compound together with phosphorous acid and / or hypophosphorous acid. The method for treating solid waste of the present invention,
The solid waste is detoxified by adding the solid waste treating agent to the solid waste. In the method of the present invention, a solid waste treating agent is added to the solid waste,
The treatment is preferably performed by heating to 100 to 1000 ° C.
【０００８】[0008]
【発明の実施の形態】本発明において亜リン酸類として
は、亜リン酸や亜リン酸塩が用いられる。亜リン酸塩と
しては、例えば亜リン酸ナトリウム、亜リン酸カリウ
ム、亜リン酸カルシウム、亜リン酸マグネシウム、亜リ
ン酸アンモニウム、亜リン酸水素ナトリウム、亜リン酸
水素カリウム、亜リン酸水素カルシウム、亜リン酸マグ
ネシウム等が挙げられる。これらのうち、亜リン酸、亜
リン酸ナトリウム、亜リン酸カルシウムが好ましい。上
記、亜リン酸や亜リン酸塩は２種以上を混合して用いる
ことができる。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, phosphorous acid or phosphite is used as phosphorous acid. Examples of the phosphite include sodium phosphite, potassium phosphite, calcium phosphite, magnesium phosphite, ammonium phosphite, sodium hydrogen phosphite, potassium hydrogen phosphite, calcium hydrogen phosphite, and sodium phosphite. Magnesium phosphate and the like. Of these, phosphorous acid, sodium phosphite, and calcium phosphite are preferred. The phosphoric acid and the phosphite may be used as a mixture of two or more.
【０００９】また次亜リン酸類としては、次亜リン酸や
次亜リン酸塩が用いられる。次亜リン酸塩としては、次
亜リン酸ナトリウム、次亜リン酸カリウム、次亜リン酸
カルシウム、次亜リン酸マグネシウム、次亜リン酸アン
モニウム等が挙げられ、これらのうち、次亜リン酸、次
亜リン酸ナトリウム、次亜リン酸カルシウムが好まし
い。上記、次亜リン酸や次亜リン酸塩は２種以上を混合
して用いることができる。また亜リン酸類と次亜リン酸
類とは、どちらか一方のみを用いても、両方を混合して
用いても良い。As the hypophosphorous acid, hypophosphorous acid or hypophosphite is used. Examples of the hypophosphite include sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, magnesium hypophosphite, ammonium hypophosphite and the like. Sodium phosphite and calcium hypophosphite are preferred. The above-mentioned hypophosphorous acid and hypophosphite can be used as a mixture of two or more. Further, either one of the phosphorous acid and the hypophosphorous acid may be used, or both may be used as a mixture.
【００１０】本発明の固体状廃棄物処理剤は、上記亜リ
ン酸類及び／又は次亜リン酸類とともに、アルミニウム
化合物及び／又はチタン化合物を含有するものであって
も良い。アルミニウム化合物としては、例えば硫酸アル
ミニウム、水酸化アルミニウム、酸化アルミニウム、リ
ン酸アルミニウム、硝酸アルミニウム、アルミノシリカ
ゲル等が、チタン化合物としては酸化チタン、窒化チタ
ン、硫酸チタン等が挙げられる。これらの化合物のう
ち、特にリン酸アルミニウム、硫酸アルミニウムが好ま
しい。The solid waste treating agent of the present invention may contain an aluminum compound and / or a titanium compound together with the above-mentioned phosphorous acid and / or hypophosphorous acid. Examples of the aluminum compound include aluminum sulfate, aluminum hydroxide, aluminum oxide, aluminum phosphate, aluminum nitrate, and alumino silica gel. Examples of the titanium compound include titanium oxide, titanium nitride, and titanium sulfate. Among these compounds, aluminum phosphate and aluminum sulfate are particularly preferable.
【００１１】亜リン酸類及び／又は次亜リン酸類と、上
記アルミニウム化合物及び／又はチタン化合物との混合
比は、重量比で亜リン酸類及び／又は次亜リン酸類：ア
ルミニウム化合物及び／又はチタン化合物＝９９．９９
〜６０：０．０１〜４０が好ましい。亜リン酸類及び／
又は次亜リン酸類と、アルミニウム化合物及び／又はチ
タン化合物とを併用すると、ダイオキシン類の無害化処
理の効果が更に向上する。亜リン酸類及び／又は次亜リ
ン酸類と、アルミニウム化合物及び／又はチタン化合物
とを併用する場合、更にケイ素化合物、バナジウム化合
物、モリブデン化合物、タングステン化合物、セリウム
化合物の少なくとも１種を併用すると、上記した効果が
更に向上する。The mixing ratio of the phosphorous acid and / or hypophosphorous acid and the above-mentioned aluminum compound and / or titanium compound is such that the weight ratio is phosphorous acid and / or hypophosphorous acid: aluminum compound and / or titanium compound. = 99.99
~ 60: 0.01 to 40 is preferred. Phosphorous acid and / or
Alternatively, when a hypophosphorous acid is used in combination with an aluminum compound and / or a titanium compound, the effect of detoxifying dioxins is further improved. When a phosphorous acid and / or a hypophosphorous acid are used in combination with an aluminum compound and / or a titanium compound, the above-mentioned is used when at least one of a silicon compound, a vanadium compound, a molybdenum compound, a tungsten compound and a cerium compound is used in combination. The effect is further improved.
【００１２】上記ケイ素化合物としては、ケイ酸、ケイ
酸カルシウム、ケイ酸ナトリウム、ケイ酸カリウム、メ
タケイ酸ナトリウム、ケイタングステン酸、二ケイ酸ナ
トリウム等が、バナジウム化合物としては、酸化バナジ
ウム、オキシ硫酸バナジウム等が、モリブデン化合物と
しては、酸化モリブデン、モリブデン酸カルシウム、モ
リブデン酸ナトリウム、モリブデン酸バリウム、リンモ
リブデン酸、リンモリブデン酸ナトリウム等が、タング
ステン化合物としては、酸化タングステン、タングステ
ン酸カルシウム、タングステン酸ナトリウム、リンタン
グステン酸、リンタングステン酸ナトリウム等が、セリ
ウム化合物としては、酸化セリウム、硝酸セリウム、炭
酸セリウム、硫酸セリウム、リン酸セリウム等が挙げら
れる。これらの化合物の少なくとも１種を、上記亜リン
酸類及び／又は次亜リン酸類と、アルミニウム化合物及
び／又はチタン化合物との混合物に更に併用する場合、
これらの化合物の使用量は、亜リン酸類及び／又は次亜
リン酸類１００重量部当たり、０．０１〜２０重量部が
好ましい。The above-mentioned silicon compounds include silicic acid, calcium silicate, sodium silicate, potassium silicate, sodium metasilicate, silicotungstic acid, sodium disilicate and the like, and the vanadium compounds include vanadium oxide and vanadium oxysulfate. As molybdenum compounds, molybdenum oxide, calcium molybdate, sodium molybdate, barium molybdate, phosphomolybdic acid, sodium phosphomolybdate, and the like, and tungsten compounds as tungsten oxide, calcium tungstate, sodium tungstate, Examples of the cerium compound include phosphotungstic acid and sodium phosphotungstate, and examples of the cerium compound include cerium oxide, cerium nitrate, cerium carbonate, cerium sulfate, and cerium phosphate. When at least one of these compounds is further used in combination with the above-mentioned phosphorous acid and / or hypophosphorous acid and a mixture of an aluminum compound and / or a titanium compound,
The use amount of these compounds is preferably 0.01 to 20 parts by weight per 100 parts by weight of phosphorous acid and / or hypophosphorous acid.
【００１３】上記本発明の固体状廃棄物処理剤は、更に
必要に応じて水ガラス、消石灰、セメント等の副成分と
混合して用いることができる。副成分は本発明固体状廃
棄物処理剤の重量の、５〜１００重量％程度併用するこ
とが好ましい。副成分としては、水ガラス、消石灰、セ
メントの他に、無機吸着剤、中和剤、金属捕集剤、リン
酸類等を用いることができる。The solid waste treating agent of the present invention can be used in admixture with an auxiliary component such as water glass, slaked lime or cement, if necessary. The auxiliary component is preferably used in an amount of about 5 to 100% by weight based on the weight of the solid waste treating agent of the present invention. As an auxiliary component, an inorganic adsorbent, a neutralizing agent, a metal collector, a phosphoric acid, and the like can be used in addition to water glass, slaked lime, and cement.
【００１４】上記無機吸着剤としては、例えば、ゼオラ
イト、ベントナイト、活性白土、カオリンが挙げられ
る。中和剤としては、例えば硫酸、塩化鉄等が挙げられ
る。また金属捕集剤としては、例えばジチオカルバミン
酸型の官能基やチオ尿素型の官能基を有する公知の金属
捕集剤を用いることができる。リン酸類としては、リン
酸、リン酸ナトリウム、リン酸カリウム、リン酸カルシ
ウム、リン酸アンモニウム等が挙げられる。[0014] Examples of the inorganic adsorbent include zeolite, bentonite, activated clay, and kaolin. Examples of the neutralizing agent include sulfuric acid, iron chloride and the like. As the metal trapping agent, for example, a known metal trapping agent having a dithiocarbamic acid type functional group or a thiourea type functional group can be used. Examples of the phosphoric acids include phosphoric acid, sodium phosphate, potassium phosphate, calcium phosphate, and ammonium phosphate.
【００１５】これらの副成分を併用すると、固体状廃棄
物中の金属の固定化により固体状廃棄物の無害化処理効
果が更に高められる。また中和剤はアルカリ性の廃棄物
に用いると効果的である。When these auxiliary components are used in combination, the effect of detoxifying the solid waste is further enhanced by immobilizing the metal in the solid waste. The neutralizing agent is effective when used for alkaline waste.
【００１６】本発明の処理剤による処理の対象となる固
体状廃棄物としては、例えばゴミ焼却場において生成す
る焼却灰や煤塵、鉱滓、汚泥、土壌、シュレッダーダス
ト等が挙げられる。本発明方法は、これらの固体状廃棄
物に上記本発明の処理剤を添加して混練し、固体状廃棄
物を無害化する方法であり、簡単な作業を行うだけで固
体状廃棄物中の有害な重金属類を効果的に無害化でき
る。また有害なダイオキシン類を含む煤塵や、ダイオキ
シン類で汚染された土壌等も効果的に無害化することが
できる。本発明方法では、必要に応じて本発明処理剤を
水に分散又は溶解させた状態で固体状廃棄物に添加して
混練するか、本発明処理剤とともに水と固体状廃棄物に
添加するようにしても良い。本発明処理剤とともに水を
併用する場合、水の添加量は、亜リン酸類及び／又は次
亜リン酸類の重量に対し、１〜５００重量％程度が好ま
しい。The solid waste to be treated by the treatment agent of the present invention includes, for example, incinerated ash, dust, slag, sludge, soil, shredder dust and the like generated in a garbage incineration plant. The method of the present invention is a method of adding the treating agent of the present invention to these solid wastes and kneading them to detoxify the solid wastes. Harmful heavy metals can be effectively rendered harmless. Dust containing harmful dioxins, soil contaminated with dioxins, and the like can also be effectively rendered harmless. In the method of the present invention, if necessary, the treating agent of the present invention may be added to water and solid waste together with the treating agent of the present invention in a state of being dispersed or dissolved in water and added to the solid waste, or kneaded. You may do it. When water is used in combination with the treating agent of the present invention, the amount of water added is preferably about 1 to 500% by weight based on the weight of phosphorous acid and / or hypophosphorous acid.
【００１７】また本発明方法において、処理剤を固体状
廃棄物に添加して処理する際の温度は、１００〜１００
０℃、特に１５０〜９００℃が好ましい。本発明処理剤
を固体状廃棄物に添加し、１００〜１０００℃の温度に
加熱処理すると、固体状廃棄物中の有害な金属がメタル
化されて溶出し難くなり、更にダイオキシン類等の有機
塩素化合物の分解が促進されて無害化する等の効果が向
上するため好ましい。本発明の処理剤の固体状廃棄物に
対する添加量は、廃棄物中に含有される重金属の量によ
り変化するが、殆どの場合、亜リン酸類及び／又は次亜
リン酸類の添加量（或いは亜リン酸類及び／又は次亜リ
ン酸類と、アルミニウム化合物及び／又はチタン化合物
との混合物の場合には、混合物としての添加量）が０．
０１〜５０重量％となるように添加することが好まし
い。In the method of the present invention, the temperature at which the treatment agent is added to the solid waste for treatment is 100 to 100.
0 ° C, particularly preferably 150 to 900 ° C, is preferred. When the treating agent of the present invention is added to solid waste and heated at a temperature of 100 to 1000 ° C., harmful metals in the solid waste are metallized and hardly eluted. It is preferable because the effect of promoting the decomposition of the compound and detoxifying the compound is improved. The amount of the treatment agent of the present invention added to the solid waste varies depending on the amount of heavy metal contained in the waste, but in most cases, the amount of phosphorous acid and / or hypophosphorous acid added (or In the case of a mixture of a phosphoric acid and / or hypophosphorous acid and an aluminum compound and / or a titanium compound, the amount of the mixture is 0.
It is preferable to add it so as to be 01 to 50% by weight.
【００１８】本発明方法によって処理した固体状廃棄物
は、含有されている有害な金属の溶出防止及び有機塩素
化合物の無害化が十分施されているので、処理後の固体
状廃棄物をそのまま埋め立て最終処分し、あるいは必要
に応じてセメントで固めて最終処分することができ、さ
らに処理後の固体状廃棄物に公知の重金属捕集剤を添加
して埋め立て、あるいはセメント固化して最終処分して
も良い。固体状廃棄物をセメント等で固めて最終処分す
る場合、本発明方法で処理した固体状廃棄物は従来法に
比べ、セメントの使用量が少ない場合でも、固体状廃棄
物中の金属が再溶出して二次汚染を生じる等の虞れが少
ない。The solid waste treated by the method of the present invention has been sufficiently treated to prevent the harmful metals contained therein from being eluted and detoxify the organochlorine compounds, so that the solid waste after treatment is landfilled as it is. Final disposal or, if necessary, solidification with cement for final disposal.Addition of a known heavy metal collector to the solid waste after treatment and landfilling or solidification of cement for final disposal Is also good. When solid waste is solidified with cement or the like for final disposal, the solid waste treated by the method of the present invention re-elutes metals in the solid waste even when the amount of cement used is smaller than in the conventional method. Therefore, there is little fear that secondary contamination will occur.
【００１９】[0019]
【実施例】以下、実施例を挙げて本発明を更に詳細に説
明する。 実施例１〜１０、比較例１ 亜鉛０．８ｇ／ｋｇ、鉛１．２ｇ／ｋｇ、カドミウム
０．０５ｇ／ｋｇ、カルシウム４３０ｇ／ｋｇ、及びダ
イオキシン２５０ｍｇ／ｇを含む煤塵１００ｇ当たりに
対し、表１に示す組成の処理剤を、亜リン酸類及び／又
は次亜リン酸類（又は亜リン酸類及び／又は次亜リン酸
類と、アルミニウム化合物及び／又はチタン化合物との
混合物）の添加量（無水物重量）が１０ｇとなるように
添加し、ロータリーキルン中で１５０℃にて２時間養生
して処理した。各処理剤で処理済の煤塵と未処理の煤塵
各５０ｇを、純水５００ｍｌ中で常温にて６時間浸とう
して金属の溶出試験を行った。純水中に溶出した金属の
濃度を原子吸光分析法によって測定した結果を表１に示
す。また、処理後の煤塵及び未処理の煤塵中のダイオキ
シン類の濃度を測定した結果をあわせて表１に示した。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. Examples 1 to 10 and Comparative Example 1 For 100 g of dust containing 0.8 g / kg of zinc, 1.2 g / kg of lead, 0.05 g / kg of cadmium, 430 g / kg of calcium, and 250 mg / g of dioxin, Table 1 The amount of the treatment agent having the composition shown in (1) is an addition amount of phosphorous acid and / or hypophosphorous acid (or a mixture of phosphorous acid and / or hypophosphorous acid and an aluminum compound and / or a titanium compound) (anhydrous weight) ) Was added to give 10 g, and the mixture was cured in a rotary kiln at 150 ° C. for 2 hours. 50 g each of the dust treated with each treating agent and the untreated dust were immersed in 500 ml of pure water at room temperature for 6 hours to conduct a metal elution test. Table 1 shows the results of measuring the concentration of the metal eluted in the pure water by atomic absorption spectrometry. Table 1 also shows the results of measuring the concentrations of dioxins in the treated dust and the untreated dust.
【００２０】[0020]
【表１】 [Table 1]
【００２１】実施例２１〜３０、比較例２ 鉛２．４ｇ／ｋｇ、亜鉛０．６９ｇ／ｋｇ、カドミウム
０．０６ｇ／ｋｇ、ニッケル０．４８ｇ／ｋｇ、銅３．
１６ｇ／ｋｇ、クロム１．３ｇ／ｋｇ、カルシウム０．
２ｇ／ｋｇを含有する鉱滓１００ｇ当たりに対し、表２
に示す処理剤１００重量部を、１５重量部の水に分散又
は溶解させた処理液を、亜リン酸類及び／又は次亜リン
酸類（又は亜リン酸類及び／又は次亜リン酸類と、アル
ミニウム化合物及び／又はチタン化合物との混合物）の
添加量（無水物重量）が２０ｇとなるように添加し、６
０℃で１５分間混練した。各処理剤で処理済の鉱滓と未
処理の鉱滓各５０ｇを用い、実施例１〜１０と同様にし
て金属溶出試験を行った。溶出した金属の濃度を原子吸
光分析法によって測定した結果を表２に示す。Examples 21 to 30, Comparative Example 2 2.4 g / kg of lead, 0.69 g / kg of zinc, 0.06 g / kg of cadmium, 0.48 g / kg of nickel, and 3.0 g of copper.
16 g / kg, chromium 1.3 g / kg, calcium 0.
Table 2 for 100 g of slag containing 2 g / kg
A treatment solution obtained by dispersing or dissolving 100 parts by weight of a treating agent shown in (1) in 15 parts by weight of water is used as a phosphorous acid and / or hypophosphorous acid (or a phosphorous acid and / or a hypophosphorous acid, and an aluminum compound) And / or a mixture with a titanium compound) so that the amount (anhydrous weight) of the mixture becomes 20 g.
Kneaded at 0 ° C. for 15 minutes. A metal dissolution test was performed in the same manner as in Examples 1 to 10, using 50 g each of the slag that had been treated with each treatment agent and the untreated slag. Table 2 shows the results of measuring the concentration of the eluted metal by atomic absorption spectrometry.
【００２２】[0022]
【表２】 [Table 2]
【００２３】実施例３１〜４０、比較例３ クロム８５ｍｇ／ｋｇ、銅１６ｍｇ／ｋｇ、カドミウム
３７ｍｇ／ｋｇ、亜鉛５４ｍｇ／ｋｇ、鉛１０９ｍｇ／
ｋｇ、及びダイオキシン３３０ｎｇ／ｇを含有する土壌
１００ｇ当たりに対し、表３に示す処理剤１０ｇを、ロ
ータリーキルン中で３００℃にて４０分間養生後、冷却
した。各処理剤で処理済の土壌と未処理の土壌各５０ｇ
を用い、実施例１〜１０と同様にして金属溶出試験を行
った。溶出した金属の濃度を原子吸光分析法によって測
定した結果を表３に示す。また、処理後の土壌及び未処
理土壌中のダイオキシン類の濃度を測定した結果を表３
にあわせて示した。Examples 31-40, Comparative Example 3 Chromium 85mg / kg, Copper 16mg / kg, Cadmium 37mg / kg, Zinc 54mg / kg, Lead 109mg / kg
10 g of the treating agent shown in Table 3 was cured in a rotary kiln at 300 ° C. for 40 minutes per 100 g of soil containing 100 kg of dioxin and 330 ng / g of dioxin, and then cooled. 50g each of soil treated with each treatment agent and untreated soil
, And a metal dissolution test was performed in the same manner as in Examples 1 to 10. Table 3 shows the results of measuring the concentration of the eluted metal by atomic absorption spectrometry. Table 3 shows the results of measuring the concentrations of dioxins in the treated soil and the untreated soil.
It is shown along with
【００２４】[0024]
【表３】 [Table 3]
【００２５】[0025]
【発明の効果】以上説明したように本発明の固体状廃棄
物処理剤は、固体状廃棄物中の有害な金属類やダイオキ
シン類を確実に無害化処理することができる。また本発
明方法で処理した固体状廃棄物を最終処分するに際し、
必要に応じてセメント等で固める場合、セメント等の使
用量を少なくしても固体状廃棄物中の金属等が再溶出し
て二次汚染を生じる等の虞れがない。また本発明方法で
処理した固体状廃棄物はセメント等で固める必要がない
か、セメント等で固める場合でも、その使用量を少なく
することができることにより、従来に比べて嵩が小さく
て済み、その後の処理工程への移送や処理作業が非常に
容易となる等の効果を有する。As described above, the solid waste treating agent of the present invention can reliably detoxify harmful metals and dioxins in solid waste. In the final disposal of the solid waste treated by the method of the present invention,
When solidifying with cement or the like as needed, there is no fear that metals and the like in the solid waste are re-eluted and secondary contamination occurs even if the amount of cement or the like is reduced. In addition, the solid waste treated by the method of the present invention does not need to be solidified with cement or the like, or even when solidified with cement or the like, the amount used can be reduced, so that the bulk can be reduced compared to the conventional method, This has the effect that the transfer to the processing step and the processing work become very easy.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ１０Ｇ 1/10 Ｂ０９Ｂ 3/00 ３０４Ａ (72)発明者 岡山 博之 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内 (72)発明者 杉山 克之 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内 (72)発明者 細田 和夫 愛知県岩倉市野寄町西出１番地の１ ミヨ シ油脂株式会社名古屋工場内 (72)発明者 守屋 雅文 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI C10G 1/10 B09B 3/00 304A (72) Inventor Hiroyuki Okayama Miyoshi Yushi Co., Ltd. 4-6-1 Horikiri, Katsushika-ku, Tokyo (72) Inventor Katsuyuki Sugiyama Inside Miyoshi Oil & Fat Co., Ltd. 4-66-1, Horikiri, Katsushika-ku, Tokyo (72) Inventor Kazuo Hosoda 1-1-1, Nishiide, Noyoro-cho, Iwakura-shi, Aichi Prefecture Inside Nagoya Plant of Miyoshi Oil & Fat Co., Ltd. (72) Inventor Masafumi Moriya Miyoshi Yushi Co., Ltd. 4-66-1, Horikiri, Katsushika-ku, Tokyo
Claims (4)
有することを特徴とする固体状廃棄物処理剤。1. A solid waste treating agent comprising phosphorous acid and / or hypophosphorous acid.
もに、アルミニウム化合物及び／又はチタン化合物を含
有することを特徴とする請求項１記載の固体状廃棄物処
理剤。2. The solid waste treating agent according to claim 1, further comprising an aluminum compound and / or a titanium compound together with the phosphorous acid and / or hypophosphorous acid.
固体状廃棄物処理剤を添加して固体状廃棄物を無害化す
ることを特徴とする固体状廃棄物の処理方法。3. A method for treating solid waste, comprising adding the solid waste treating agent according to claim 1 to the solid waste to render the solid waste harmless.
加し、１００〜１０００℃に加熱する請求項３記載の固
体状廃棄物の処理方法。4. The method for treating solid waste according to claim 3, wherein a solid waste treating agent is added to the solid waste and heated to 100 to 1000 ° C.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31835698A JP3718066B2 (en) | 1998-02-10 | 1998-10-21 | Solid waste treatment method |
| DE69911481T DE69911481T2 (en) | 1998-02-10 | 1999-02-06 | Solid waste treatment processes |
| EP99102346A EP0937483B1 (en) | 1998-02-10 | 1999-02-06 | Treatment method of solid waste |
| AT99102346T ATE250443T1 (en) | 1998-02-10 | 1999-02-06 | METHOD FOR TREATING SOLID WASTE |
| KR1019990004478A KR19990072523A (en) | 1998-02-10 | 1999-02-09 | Solid waste treatment agent and treatment method of solid waste |
| US09/247,548 US6137027A (en) | 1998-02-10 | 1999-02-10 | Solid waste treatment agent and treatment method of solid waste |
| TW088102082A TW399001B (en) | 1998-02-10 | 1999-02-10 | Solid waste treatment agent and treatment method of solid waste |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4453298 | 1998-02-10 | ||
| JP10-44532 | 1998-02-10 | ||
| JP31835698A JP3718066B2 (en) | 1998-02-10 | 1998-10-21 | Solid waste treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11290824A true JPH11290824A (en) | 1999-10-26 |
| JP3718066B2 JP3718066B2 (en) | 2005-11-16 |
Family
ID=26384471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31835698A Expired - Fee Related JP3718066B2 (en) | 1998-02-10 | 1998-10-21 | Solid waste treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3718066B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001191063A (en) * | 2000-01-12 | 2001-07-17 | Kurita Water Ind Ltd | Method for treating soil |
| JP2002273378A (en) * | 2001-03-21 | 2002-09-24 | Kurita Water Ind Ltd | Method for processing fly ash containing alkali component |
| JP2004511345A (en) * | 2000-10-17 | 2004-04-15 | ソルヴェイ | How to deactivate sludge |
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| JP2004314058A (en) * | 2003-03-28 | 2004-11-11 | Miyoshi Oil & Fat Co Ltd | Treatment method for waste |
| JP2005509517A (en) * | 2001-11-21 | 2005-04-14 | ソルヴェイ | How to deactivate mineral residues |
| JP2005238049A (en) * | 2004-02-25 | 2005-09-08 | Miyoshi Oil & Fat Co Ltd | Solid waste disposal method and method of regenerating waste reclaiming disposal site |
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1998
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001191063A (en) * | 2000-01-12 | 2001-07-17 | Kurita Water Ind Ltd | Method for treating soil |
| JP4576654B2 (en) * | 2000-01-12 | 2010-11-10 | 栗田工業株式会社 | Soil treatment method |
| JP2004511345A (en) * | 2000-10-17 | 2004-04-15 | ソルヴェイ | How to deactivate sludge |
| JP2002273378A (en) * | 2001-03-21 | 2002-09-24 | Kurita Water Ind Ltd | Method for processing fly ash containing alkali component |
| JP2005509517A (en) * | 2001-11-21 | 2005-04-14 | ソルヴェイ | How to deactivate mineral residues |
| JP2004249227A (en) * | 2003-02-20 | 2004-09-09 | Ishihara Sangyo Kaisha Ltd | Decomposing agent for organic compound and environmental decontaminating method using it |
| JP2004314058A (en) * | 2003-03-28 | 2004-11-11 | Miyoshi Oil & Fat Co Ltd | Treatment method for waste |
| JP2005238049A (en) * | 2004-02-25 | 2005-09-08 | Miyoshi Oil & Fat Co Ltd | Solid waste disposal method and method of regenerating waste reclaiming disposal site |
| JP2005246345A (en) * | 2004-03-08 | 2005-09-15 | Miyoshi Oil & Fat Co Ltd | Method for treating solid waste and method for regenerating waste landfill site |
| JP2006340836A (en) * | 2005-06-08 | 2006-12-21 | Jfe Kankyo Solutions Kk | Disposal method for harmful substance molecules, and chemical which is used for the disposal method |
| JP2007209829A (en) * | 2005-10-04 | 2007-08-23 | Miyoshi Oil & Fat Co Ltd | Disposal method of solid waste |
| JP2012188544A (en) * | 2011-03-10 | 2012-10-04 | Sumitomo Osaka Cement Co Ltd | Heavy metal-insolubilizing material, and heavy metal-insolubilizing method |
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