JPH10165922A - Industrial waste treating method - Google Patents
Industrial waste treating methodInfo
- Publication number
- JPH10165922A JPH10165922A JP8342492A JP34249296A JPH10165922A JP H10165922 A JPH10165922 A JP H10165922A JP 8342492 A JP8342492 A JP 8342492A JP 34249296 A JP34249296 A JP 34249296A JP H10165922 A JPH10165922 A JP H10165922A
- Authority
- JP
- Japan
- Prior art keywords
- treated
- sodium silicate
- industrial waste
- silicate
- water
- 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
- 238000000034 method Methods 0.000 title claims description 19
- 239000002440 industrial waste Substances 0.000 title claims description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000126 substance Substances 0.000 claims abstract description 31
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 27
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910001868 water Inorganic materials 0.000 claims abstract description 25
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 23
- 239000000292 calcium oxide Substances 0.000 claims abstract description 22
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 17
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 17
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 17
- 239000000378 calcium silicate Substances 0.000 claims abstract description 17
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 17
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 150000002500 ions Chemical class 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000003672 processing method Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000000383 hazardous chemical Substances 0.000 abstract description 9
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 150000004760 silicates Chemical class 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 2
- 235000019794 sodium silicate Nutrition 0.000 abstract 1
- 235000019351 sodium silicates Nutrition 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 239000002351 wastewater Substances 0.000 description 7
- 239000011734 sodium Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 150000001722 carbon compounds Chemical class 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000013056 hazardous product Substances 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910004762 CaSiO Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- MLRVZFYXUZQSRU-UHFFFAOYSA-N 1-chlorohexane Chemical compound CCCCCCCl MLRVZFYXUZQSRU-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- -1 divalent metal ions Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- CEOCDNVZRAIOQZ-UHFFFAOYSA-N pentachlorobenzene Chemical compound ClC1=CC(Cl)=C(Cl)C(Cl)=C1Cl CEOCDNVZRAIOQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
Landscapes
- Fire-Extinguishing Compositions (AREA)
- Processing Of Solid Wastes (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、産業廃棄物の処理
方法、詳しくは油性汚泥、液状有害物、固形有害物、有
機有害物などを無害化処理するための処理方法に関す
る。The present invention relates to a method for treating industrial waste, and more particularly to a method for detoxifying oily sludge, liquid hazardous substances, solid hazardous substances, organic hazardous substances, and the like.
【０００２】[0002]
【従来の技術】近年、資源の再利用化についての様々な
試みが、環境問題の一環として地球的規模でアピールさ
れており、各種工場などから排出される各種の油性汚
泥、液状有害物、固形有害物、有機有害物などに含まれ
る有害物質を無公害化することができ、しかも経済性に
優れた処理方法の出現が待望されている。2. Description of the Related Art In recent years, various attempts to recycle resources have been promoted on a global scale as part of environmental issues, and various types of oily sludge, liquid harmful substances, and solids discharged from various factories have been promoted. There is a long-awaited demand for a processing method that can make harmful substances contained in harmful substances, organic harmful substances, and the like non-polluting and that is excellent in economic efficiency.
【０００３】[0003]
【発明が解決しようとする課題】本発明はこのような状
況の下でなされたものである。すなわち、本発明は、一
定の連複スケジュールによって油性汚泥などの被処理物
中に含まれる重金属や有害化学物質などの炭素化合物を
全て珪酸ソーダ生成物質として超安定化した形にして無
害化する経済性に優れた処理方法を提案するものであ
る。また、本発明は、廃棄ガラスを有害物質の固化剤と
してリサイクルすることにより有効利用する処理方法を
提案するものである。The present invention has been made under such circumstances. That is, the present invention provides an economical method of detoxifying carbon compounds such as heavy metals and harmful chemical substances contained in an object to be treated such as oily sludge in a super-stabilized form as a sodium silicate-generating substance according to a fixed schedule. It is intended to propose a processing method having excellent properties. Further, the present invention proposes a processing method for effectively utilizing waste glass by recycling it as a solidifying agent for harmful substances.
【０００４】[0004]
【課題を解決するための手段】本発明に係る産業廃棄物
の処理方法は、基本的には、消石灰と珪酸ソーダと水と
を混ぜた処理液中に、被処理物を導入する、という方法
である。さらに具体的には、消石灰と珪酸ソーダと水と
を混ぜた処理液中に、被処理物を導入し、消石灰と珪酸
ソーダとの反応によって生成する珪酸カルシウムと、珪
酸ソーダと被処理物に含まれる重金属イオンとの反応に
よって生成する重金属の珪酸塩とを沈殿させる、という
方法である。これらの処理方法を行う場合に、廃棄ガラ
スに含まれる珪酸ソーダを活用することが可能である。The method for treating industrial waste according to the present invention is basically a method of introducing a substance to be treated into a treatment liquid obtained by mixing slaked lime, sodium silicate and water. It is. More specifically, an object to be treated is introduced into a treatment liquid in which slaked lime, sodium silicate and water are mixed, and calcium silicate generated by a reaction between slaked lime and sodium silicate, and sodium silicate and the object to be treated are included. The method is to precipitate heavy metal silicate generated by the reaction with heavy metal ions. When performing these treatment methods, it is possible to utilize sodium silicate contained in waste glass.
【０００５】上記被処理物としては、油性汚泥、液状有
害物、固形有害物、有機有害物の中から選ばれる１種類
のもの、あるいは、それらの中から選ばれる複数種類の
ものが対象となり、これらの被処理物には、殆どの場
合、重金属や油成分が含まれる。これらの産業廃棄物に
は次のような具体的廃棄物が知られている。 （ａ）油性汚泥：ＰＣＢ，カドミウム，水銀，その他の
有害物質を含む廃油、貯油槽内の残余油成分、機械廃
油、印刷残余色素油成分、染色残余色素油成分、タンカ
ー船槽内付着油泥、大型貯油タンク内付着油泥、精油残
余有害油成分、その他の油状排液など。 （ｂ）液状有害物：各種金属成分を含む洗浄排液、シア
ン排液、ＰＣＢ排液、六価クロム排液、カドミウム排
液、クロロヘキサン排液、テトラクロロエチレン排液、
その他の重金属含有排液、有機物洗浄排液、悪臭溶液な
ど。 （ｃ）固形有害物：廃棄バッテリー、乾電池、蛍光灯、
ブラウン管、電気部品などに用いられている有害物質、
焼却灰、煙灰、飛灰など、原油精製で生じる硫酸ピッチ
やタールなど、液状より固形化した廃棄物、高濃度有害
物質含有土壌、各種有害物質運搬容器の付着物、浚渫汚
泥など。 （ｄ）有機有害物：水産物加工残余物、農産物加工残余
物、動物家畜し尿、食品加工残余物など。[0005] The object to be treated is one type selected from oily sludge, liquid hazardous material, solid hazardous material, and organic hazardous material, or a plurality of types selected from these. Most of these objects to be processed contain heavy metals and oil components. The following concrete wastes are known as these industrial wastes. (A) Oily sludge: waste oil containing PCB, cadmium, mercury and other harmful substances, residual oil component in oil storage tank, mechanical waste oil, printing residual dye oil component, dye residual dye oil component, oil adhering in tanker tank, Oil mud adhering to large oil storage tanks, essential oil residual harmful oil components, other oily drainage, etc. (B) Liquid hazardous substances: washing wastewater containing various metal components, cyan wastewater, PCB wastewater, hexavalent chromium wastewater, cadmium wastewater, chlorohexane wastewater, tetrachloroethylene wastewater,
Other heavy metal-containing effluents, organic matter washing effluents, odor solutions, etc. (C) Solid hazardous materials: waste batteries, dry batteries, fluorescent lights,
Harmful substances used in cathode ray tubes, electrical components, etc.
Incinerated ash, smoke ash, fly ash, etc., such as sulfuric acid pitch and tar generated from crude oil refining, solidified waste from liquids, soil containing high concentrations of harmful substances, deposits on various toxic substance transport containers, dredged sludge, etc. (D) Organic harmful substances: marine product processing residue, agricultural product processing residue, animal livestock excreta, food processing residue and the like.
【０００６】上掲した種々の被処理物において、それが
固形物である場合には、粉砕機による前処理を行い、そ
のような前処理後の被処理物が処理対象となる。[0006] In the above-mentioned various objects to be treated, when they are solids, they are subjected to a pre-treatment by a pulverizer, and the objects to be treated after such pre-treatment are to be treated.
【０００７】本発明においては、上記珪酸カルシウムに
被処理物中の油分を吸着させる、という方法を採用する
ことが望ましい。In the present invention, it is desirable to adopt a method of adsorbing an oil component in the object to be treated on the calcium silicate.
【０００８】また、本発明においては、上記消石灰が、
炭酸カルシウム粉粒体を加熱することにより生成する生
石灰粉粒体を上記水と反応させて得られるものであるこ
とが望ましい。In the present invention, the slaked lime is
Desirably, it is obtained by reacting quicklime powder produced by heating calcium carbonate powder with the water.
【０００９】さらに、本発明においては、上記生石灰
は、その粒子が油成分の皮膜で取り囲まれていることが
望ましい。Further, in the present invention, it is preferable that the particles of the quick lime are surrounded by a film of an oil component.
【００１０】さらに、本発明においては、上記生石灰を
上記水と撹拌する方法を採用することが望ましい。Further, in the present invention, it is desirable to employ a method of stirring the quicklime with the water.
【００１１】上記した各発明では、次のような反応、現
象などが起こり得る。In each of the above-mentioned inventions, the following reactions and phenomena can occur.
【００１２】すなわち、炭酸カルシウム粉粒体を加熱す
ることにより生成する生石灰粉粒体を上記水と反応させ
て得られる消石灰、珪酸ソーダまたは廃棄ガラス、水、
の三者を混ぜた処理液中に複合油成分などを含有する有
害汚泥などの被処理物を導入して撹拌すると、生石灰と
水との水和反応により発熱する。この発熱反応に伴う発
熱により、汚泥中に含まれる揮発性の油成分などが揮発
し蒸発する。また、この水和反応による発熱作用によっ
て、汚泥に含まれる残った非揮発性の油性物質である鎖
状化合物（重金属類や有害物質を含んでいる）が分離遊
離される。そのように分離遊離された鎖状化合物が珪酸
ソーダと化学反応を起こし、その鎖状化合物が通常では
分離が非常に難しいシラノール化する。これにより、重
金属などの鎖状化合物は、簡単に統結合を行い重結合物
質として生成する。この重結合物質は、混入水と生石灰
成分によって得られたアルカリ水溶液と化合し、水素を
発生しながら溶解作用を起こし、再び珪酸ソーダを生成
し、この珪酸ソーダが有害物質の固化剤として役立つ。
これらの反応の連複スケジュールにより、油性汚泥中に
含まれる重金属や有害化学物質などの炭素化合物が全て
珪酸ソーダ生成物質となり、超安定化されて無害化（無
公害化）する。That is, slaked lime, sodium silicate or waste glass, water, obtained by reacting quicklime powder produced by heating calcium carbonate powder with the above water, water,
When an object to be treated such as harmful sludge containing a complex oil component or the like is introduced into the treatment solution containing the three components and stirred, heat is generated by a hydration reaction between quicklime and water. The heat generated by the exothermic reaction causes volatile oil components and the like contained in the sludge to evaporate and evaporate. In addition, chain compounds (including heavy metals and harmful substances), which are remaining non-volatile oily substances, contained in the sludge are separated and released by the exothermic effect of the hydration reaction. The thus separated chain compound undergoes a chemical reaction with sodium silicate, and the chain compound is silanolized, which is usually very difficult to separate. As a result, chain compounds such as heavy metals easily combine to form heavy-binding substances. This heavy-binding substance combines with the alkaline aqueous solution obtained from the mixed water and the quicklime component to cause a dissolving action while generating hydrogen, thereby producing sodium silicate again, and this sodium silicate serves as a solidifying agent for harmful substances.
Due to the schedule of these reactions, all the carbon compounds such as heavy metals and harmful chemicals contained in the oily sludge become sodium silicate-producing substances, are super-stabilized and made harmless (pollution-free).
【００１３】また、最終段階において処理剤を構成する
珪素、カルシウム成分、酸素などによる化学反応で得ら
れた相当量の珪酸カルシウム（シリカゲル）は、微細な
空間を非常に多く有する多孔質で海綿状の無害物質であ
り、この珪酸カルシウム中に有害な重金属や炭素化合物
を包囲被覆する。このものは、一般的には滲出や溶出が
不可能であり、きわめて安定したものである。In the final stage, a considerable amount of calcium silicate (silica gel) obtained by a chemical reaction with the silicon, calcium component, oxygen and the like constituting the treating agent is a porous spongy material having a very large number of fine spaces. The calcium silicate surrounds and covers harmful heavy metals and carbon compounds. This is generally not stable and cannot be exuded or eluted.
【００１４】[0014]
【発明の実施の形態】以下、本発明の処理方法について
の好適な一実施形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the processing method of the present invention will be described below.
【００１５】この処理方法では、下記の１〜４の現象が
同時に進行すると考えられる。In this processing method, the following phenomena 1 to 4 are considered to proceed simultaneously.
【００１６】１．生石灰と水の水和反応 生石灰（ＣａＯ）は、大理石や石灰岩（炭酸カルシウ
ム：ＣａＣＯ3 ）を焼き、微粉状に破砕し、流動性、反
応コントロールを得る処理を施すことが望ましい。炭酸
カルシウムを加熱すると、反応式（Ａ）によって生石灰
が得られる。1. Hydration of quick lime and water It is desirable that quick lime (CaO) be subjected to a process of burning marble or limestone (calcium carbonate: CaCO 3 ), crushing it into fine powder, and obtaining fluidity and reaction control. When calcium carbonate is heated, quick lime is obtained by the reaction formula (A).
【化１】 生石灰は水と反応して消石灰（水酸化カルシウム：Ｃａ
（ＯＨ）2 ）を生成する。Embedded image Quicklime reacts with water to react with slaked lime (calcium hydroxide: Ca
(OH) 2 ) is produced.
【化２】 得られた消石灰の水溶液（透明）は極めてアルカリ性が
強い。生石灰は何らの処理を施していないものをそのま
ま用いてもよいが、生石灰は空気中の水分（湿気）を吸
収して反応するので、生石灰の粒子を油成分等で被覆し
て空気中の水分との接触を遮断し、その状態で保存して
おいたものを使用することが望ましい。これにより活性
期間も延長される。このような生石灰粒子に水を加えて
撹拌すると、生石灰粒子を取り囲んでいる油成分等の皮
膜が破れて生石灰粒子が水と接触し、発熱しながら上記
（Ｂ）の反応が起こる。そして、発熱により温度が上昇
すれば、油成分等の皮膜は一段と破れやすくなるので、
加速度的に発熱量が増し、温度が上昇する。これが第１
段の反応である。Embedded image The obtained aqueous solution of slaked lime (transparent) is extremely alkaline. Quick lime that has not been subjected to any treatment may be used as it is, but quick lime reacts by absorbing moisture (humidity) in the air, so particles of quick lime are coated with an oil component or the like to remove moisture in the air. It is desirable to cut off the contact with and use the one stored in that state. This extends the active period. When water is added to such quicklime particles and stirred, the coating of the oil component or the like surrounding the quicklime particles is broken, and the quicklime particles come into contact with water, and the reaction (B) occurs while generating heat. And if the temperature rises due to heat generation, the film such as oil component will be more easily broken,
The calorific value increases at an accelerated rate, and the temperature rises. This is the first
It is a step reaction.
【００１７】２．消石灰と珪酸ソ−ダの反応 珪酸ソ−ダ（Ｎａ2 ＳｉＯ3 ）は、水に溶けると透明に
なり、水飴状を呈するので、一般に水ガラスと呼ばれて
いる。（Ｂ）の反応で生成した消石灰は、珪酸ソ−ダと
（Ｃ）のように反応し、珪酸カルシウム（ＣａＳｉＯ
3 ：珪石灰ともいう）になる。この場合、水ガラスと呼
ばれる上記珪酸ソーダに代えて、珪酸ソーダを含有する
廃棄ガラスの粉体を用いることも可能である。2. Reaction between Slaked Lime and Sodium Silicate Sodium silicate (Na 2 SiO 3 ) becomes transparent when dissolved in water and exhibits a syrup shape, and is generally called water glass. The slaked lime produced by the reaction of (B) reacts with soda silicate as shown in (C) to form calcium silicate (CaSiO 2).
3 : Silica lime). In this case, it is also possible to use a powder of waste glass containing sodium silicate instead of the above-mentioned sodium silicate called water glass.
【化３】 生成した珪酸カルシウムは水に溶けないので白い沈殿と
してできる。これは、一般に一価の金属イオン、Ｎａ
（＋）、Ｋ（＋）の珪酸化合物は水に溶けるが二価金属
イオン、Ｃａ（２＋）、Ｍｇ（２＋）などの珪酸化合物
は水に溶けないので沈殿するのである。Ｎａ（＋）、Ｋ
（＋）、Ｃａ（２＋）、Ｍｇ（２＋）は、それぞれ、１
価のＮａイオン、１価のＫイオン、２価のＣａイオン、
２価のＭｇイオンを示す。これが第２段の反応である。Embedded image The resulting calcium silicate is insoluble in water and forms as a white precipitate. This is generally a monovalent metal ion, Na
The silicate compounds of (+) and K (+) are soluble in water, but the silicate compounds such as divalent metal ions, Ca (2+) and Mg (2+) are insoluble in water and precipitate. Na (+), K
(+), Ca (2+) and Mg (2+) are 1
Monovalent Na ion, monovalent K ion, divalent Ca ion,
Shows divalent Mg ions. This is the second stage reaction.
【００１８】３．被処理物の中に重金属イオンが含まれ
ていると、殆どの重金属イオンは二価以上のイオンであ
るから上記したＣａ（２＋）の場合と同じく、（Ｄ）の
反応式により、珪酸ソーダと反応して沈殿を生じる。Ｍ
（２＋）は２価の金属イオンを示す。3. When heavy metal ions are contained in the object to be treated, most of the heavy metal ions are ions of two or more valencies, and therefore, as in the case of Ca (2+), sodium silicate is used according to the reaction formula (D). Reacts to form a precipitate. M
(2+) indicates a divalent metal ion.
【化４】 これが、重金属を取り込み不溶化し、安定化する理由で
ある。したがって、生石灰と、珪酸ソーダと、水とを混
ぜた処理液中に、被処理物を導入すると、多量の珪酸カ
ルシウムと微量の重金属の珪酸塩が生成することにな
る。Embedded image This is the reason why heavy metals are taken in, insolubilized, and stabilized. Therefore, when an object to be treated is introduced into a treatment liquid obtained by mixing quick lime, sodium silicate, and water, a large amount of calcium silicate and a small amount of heavy metal silicate are generated.
【００１９】４．珪酸カルシウムによる廃油の吸着 沈殿した珪酸カルシウムは多孔質であり、単位重量当た
りの表面積が極めて広い。一般に１ｇの珪酸カルシウム
は５００〜６００ｍ2 の表面積を有するといわれてい
る。そして、産業廃棄物中の油分は生成した珪酸カルシ
ウムに、ＣａＳｉＯ3 のマトリックスに包囲被覆された
状態で吸着される。これはシリカゲル（乾燥剤）に空気
中の水分が吸着される現象や、活性炭（脱臭剤）によっ
て冷蔵庫の臭気が吸着される現象と同じ現象と考えてよ
い。また、表面積が広いので油分は単分子膜か、非常に
薄い膜状に吸着されるようになり、珪酸カルシウムに保
持されるときの保持力はかなり強い。特に油分が共存す
るその場で珪酸カルシウムが生成するので、非常に効率
的に油分が吸着される。4. Adsorption of waste oil by calcium silicate The precipitated calcium silicate is porous and has a very large surface area per unit weight. Generally, 1 g of calcium silicate is said to have a surface area of 500 to 600 m 2 . Then, the oil component in the industrial waste is adsorbed on the generated calcium silicate while being surrounded and covered by the CaSiO 3 matrix. This may be considered as the same phenomenon as the phenomenon in which moisture in the air is adsorbed on silica gel (desiccant) or the phenomenon in which the odor of a refrigerator is adsorbed by activated carbon (deodorant). Further, since the surface area is large, the oil is adsorbed as a monomolecular film or a very thin film, and the holding power when held by calcium silicate is quite strong. In particular, calcium silicate is generated in situ where oil coexists, so that oil is adsorbed very efficiently.
【００２０】以上において、珪酸はＳｉＯ3 、ＳｉＯ2
として表したが、単純な構造の物質ではなく、非常に複
雑な構造物の集合である。一価のナトリウム金属イオン
Ｎａ（＋）が存在する場合は、Ｎａ（＋）が一価である
から分子量は増大しないが、カルシウムイオンや殆どの
重金属イオンは二価のイオンであることから分子量が急
激に増大して水に不溶となり析出する。この場合、重金
属は珪酸と化合しているので安定であり、生成物から重
金属イオンが滲み出してくることはないと考えてよい。
生成物を苛性ソーダの溶液で煮れば、全て溶解して重金
属が出てくるが、そのような事は以後の放置条件では考
えられないので安全と考えてよい。In the above, the silicic acid is SiO 3 , SiO 2
However, it is not a material having a simple structure, but a collection of very complicated structures. When monovalent sodium metal ion Na (+) is present, the molecular weight does not increase because Na (+) is monovalent, but the molecular weight is low because calcium ions and most heavy metal ions are divalent ions. It increases rapidly and becomes insoluble in water and precipitates. In this case, the heavy metal is stable because it is combined with the silicic acid, and it can be considered that the heavy metal ion does not seep out from the product.
If the product is boiled in a solution of caustic soda, all will be dissolved and heavy metals will come out, but such a thing cannot be considered under the subsequent standing conditions, so it may be considered safe.
【００２１】[0021]
【発明の効果】以上のように、本発明によれば、一定の
連複スケジュールによって油性汚泥などの被処理物中に
含まれる重金属や有害化学物質などの炭素化合物を全て
珪酸ソーダ生成物質として超安定化した形にして無害化
する経済性に優れた処理方法を提案することが可能にな
る。また、本発明によれば、廃棄ガラスを有害物質の固
化剤としてリサイクルすることにより有効利用すること
ができるという利点もある。As described above, according to the present invention, all carbon compounds such as heavy metals and harmful chemical substances contained in an object to be treated, such as oily sludge, are converted into sodium silicate-forming substances according to a fixed duplication schedule. It becomes possible to propose a processing method which is excellent in economical efficiency and is made harmless in a stabilized form. Further, according to the present invention, there is an advantage that waste glass can be effectively used by recycling it as a solidifying agent for harmful substances.
Claims (8)
液中に、被処理物を導入することを特徴とする産業廃棄
物の処理方法。1. A method for treating industrial waste, comprising introducing an object to be treated into a treatment liquid obtained by mixing slaked lime, sodium silicate and water.
液中に、被処理物を導入し、消石灰と珪酸ソーダとの反
応によって生成する珪酸カルシウムと、珪酸ソーダと被
処理物に含まれる重金属イオンとの反応によって生成す
る重金属の珪酸塩とを沈殿させることを特徴とする産業
廃棄物の処理方法。2. An object to be treated is introduced into a treatment liquid in which slaked lime, sodium silicate and water are mixed, and calcium silicate generated by a reaction between slaked lime and sodium silicate, and sodium silicate and the object to be treated are included. A method for treating industrial waste, comprising precipitating heavy metal silicate generated by reaction with heavy metal ions.
る廃棄ガラスの粉体である請求項１または請求項２に記
載した産業廃棄物の処理方法。3. The method for treating industrial waste according to claim 1, wherein said sodium silicate is a powder of waste glass containing sodium silicate.
を吸着させる請求項１、請求項２、請求項３のいずれか
に記載した産業廃棄物の処理方法。4. The method for treating industrial waste according to claim 1, wherein said calcium silicate adsorbs an oil component in the material to be treated.
加熱することにより生成する生石灰粉粒体を上記水と反
応させて得られるものである請求項１、請求項２、請求
項３、請求項４のいずれかに記載した産業廃棄物の処理
方法。5. The slaked lime is obtained by reacting quicklime powder generated by heating calcium carbonate powder with the water. Item 5. The method for treating industrial waste according to any one of Items 4.
で取り囲まれている請求項１、請求項２、請求項３、請
求項４、請求項５のいずれかに記載した産業廃棄物の処
理方法。6. The industrial waste according to claim 1, wherein the particles of the quicklime are surrounded by a film of an oil component. Processing method.
に記載した産業廃棄物の処理方法。7. The method of claim 6, wherein the quicklime is agitated with the water.
The industrial waste treatment method described in 1.
形有害物、有機有害物の中から選ばれる１種または複数
種である請求項１、請求項２、請求項３、請求項４、請
求項５、請求項６、請求項７のいずれかに記載した産業
廃棄物の処理方法。8. The object to be treated is one or more kinds selected from oily sludge, liquid harmful substances, solid harmful substances, and organic harmful substances. 4. The method for treating industrial waste according to any one of claims 5, 5, 6 and 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342492A JP2881410B2 (en) | 1996-12-06 | 1996-12-06 | Industrial waste treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8342492A JP2881410B2 (en) | 1996-12-06 | 1996-12-06 | Industrial waste treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10165922A true JPH10165922A (en) | 1998-06-23 |
| JP2881410B2 JP2881410B2 (en) | 1999-04-12 |
Family
ID=18354172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8342492A Expired - Fee Related JP2881410B2 (en) | 1996-12-06 | 1996-12-06 | Industrial waste treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2881410B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007125536A (en) * | 2005-01-31 | 2007-05-24 | Egs:Kk | Immobilizing agent and method for harmful component |
| JP2009106803A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | PCB-containing oil mud treatment equipment |
| JP2009106802A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | PCB-containing oil mud treatment method |
| WO2013176244A1 (en) * | 2012-05-25 | 2013-11-28 | 太平洋セメント株式会社 | Phosphorus recovery material, method for producing phosphorus recovery material, and phosphorus recovery method |
| JP2016102179A (en) * | 2014-11-28 | 2016-06-02 | 旭化成株式会社 | Granular molded body |
| PL425287A1 (en) * | 2018-04-19 | 2019-10-21 | Instytut Przemysłu Skórzanego | Method for producing agglomerate from the tanning shavings |
| PL425288A1 (en) * | 2018-04-19 | 2019-10-21 | Instytut Przemysłu Skórzanego | Method for producing agglomerate from the tanning shavings |
-
1996
- 1996-12-06 JP JP8342492A patent/JP2881410B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007125536A (en) * | 2005-01-31 | 2007-05-24 | Egs:Kk | Immobilizing agent and method for harmful component |
| JP2009106803A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | PCB-containing oil mud treatment equipment |
| JP2009106802A (en) * | 2007-10-26 | 2009-05-21 | Tokyo Electric Power Co Inc:The | PCB-containing oil mud treatment method |
| WO2013176244A1 (en) * | 2012-05-25 | 2013-11-28 | 太平洋セメント株式会社 | Phosphorus recovery material, method for producing phosphorus recovery material, and phosphorus recovery method |
| JP2013244466A (en) * | 2012-05-25 | 2013-12-09 | Taiheiyo Cement Corp | Phosphorus recovery material, method for producing phosphorus recovery material, and phosphorus recovery method |
| EP2857361A4 (en) * | 2012-05-25 | 2016-05-25 | Taiheiyo Cement Corp | Phosphorus recovery material, method for producing phosphorus recovery material, and phosphorus recovery method |
| JP2016102179A (en) * | 2014-11-28 | 2016-06-02 | 旭化成株式会社 | Granular molded body |
| PL425287A1 (en) * | 2018-04-19 | 2019-10-21 | Instytut Przemysłu Skórzanego | Method for producing agglomerate from the tanning shavings |
| PL425288A1 (en) * | 2018-04-19 | 2019-10-21 | Instytut Przemysłu Skórzanego | Method for producing agglomerate from the tanning shavings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2881410B2 (en) | 1999-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5387738A (en) | Reagent for treating a contaminated waste material and method for same | |
| Zacco et al. | Review of fly ash inertisation treatments and recycling | |
| Ajorloo et al. | Heavy metals removal/stabilization from municipal solid waste incineration fly ash: a review and recent trends | |
| CN1167897C (en) | Method and apparatus for waste treatment | |
| Qiu et al. | Microwave-assisted hydrothermal treatment with soluble phosphate added for heavy metals solidification in MSWI fly ash | |
| US8246836B2 (en) | Process for treating substances contaminated by heavy metals | |
| US5238583A (en) | Method for converting a contaminated waste material to an innocuous granular substance | |
| BRPI1101481A2 (en) | Method for the preparation of fly ash and Method for the operation of a waste incineration plant | |
| US5407576A (en) | Process for the purification of waste water | |
| Kim et al. | Evaluation of pre-treatment methods for landfill disposal of residues from municipal solid waste incineration | |
| CN113399433A (en) | Fly ash treatment method | |
| JP2881410B2 (en) | Industrial waste treatment method | |
| Zoubeir et al. | The use of the Novosol process for the treatment of polluted marine sediment | |
| KR100854036B1 (en) | Method for manufacturing soil aggregate using sewage sludge and soil aggregate using the same | |
| JP3718066B2 (en) | Solid waste treatment method | |
| EP3251123B1 (en) | Apparatus and methods for treatment of radioactive organic waste | |
| JP2004050158A (en) | Heavy metal immobilizing material and method for treating contaminated soil | |
| Babar et al. | Conventional and Emerging Practices in Hazardous Waste Management | |
| JP3592319B2 (en) | Soil modifier | |
| JP4150800B2 (en) | Processing method and apparatus for detoxification and recycling of incinerated ash at low temperature | |
| JPH0824900A (en) | Waste water and sludge treatment agent, and treatment of waste water and sludge using the agent | |
| CN1016183B (en) | Mixture containing waste residue and fuel that can be molded into briquettes | |
| JP2901654B2 (en) | Incineration method of used ion exchange resin | |
| JP2000354845A (en) | Processing method and processing system for solids containing dioxins | |
| JP2004330039A (en) | Recovery method of phosphorus and coagulant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |