WO2013136429A1 - Coating material mist treatment agent for wet-coating-booth circulating water and device for recovering wet-coating-booth circulating water - Google Patents
Coating material mist treatment agent for wet-coating-booth circulating water and device for recovering wet-coating-booth circulating water Download PDFInfo
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- WO2013136429A1 WO2013136429A1 PCT/JP2012/056369 JP2012056369W WO2013136429A1 WO 2013136429 A1 WO2013136429 A1 WO 2013136429A1 JP 2012056369 W JP2012056369 W JP 2012056369W WO 2013136429 A1 WO2013136429 A1 WO 2013136429A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/71—Paint detackifiers or coagulants, e.g. for the treatment of oversprays in paint spraying installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
- B05B14/462—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material and separating the excess material from the washing liquid, e.g. for recovery
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/14—Paint wastes
Definitions
- the present invention relates to a paint mist treating agent for wet paint booth circulating water and a wet paint booth circulating water recovery apparatus.
- organic chemicals and inorganic chemicals have been conventionally used as a paint mist treating agent for treating paint mist mixed in circulating water in a wet paint booth.
- JP 2003-71434 A Japanese Patent Laid-Open No. 11-77061
- Organic chemicals have the problem that paint sludge, which is an agglomeration of paint mist using the chemical as a paste, is wrapped with a resin polymer, so that it is difficult to dewater the recovered paint sludge. Since the insoluble fine particles generated by the drug have a weak cohesive force, there is a problem in that the growth rate of the paint sludge, which is an insoluble fine particle aggregate incorporating the paint mist, is slow and it is difficult to recover the paint sludge at high speed.
- the present invention has been made in view of the above problems, and a paint mist treatment agent for wet paint booth circulating water that enables high-speed recovery and high-speed dewatering of paint sludge, and volume reduction using the paint mist treatment agent.
- An object is to provide a wet paint booth circulating water recovery device.
- a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder, which is a wet coating Provided is a paint mist treating agent which is used for separating paint mist mixed in booth circulating water. Hydration reaction product fine particles containing ettringite and / or monosulfate are formed by a hydration hardening reaction between self-hardening inorganic compound powder and water, and a water-soluble higher fatty acid alkali salt dissolves in water to give higher fatty acid ions and sodium.
- Hydration reaction product fine particles containing ettringite and / or monosulfate have cohesion and curing power, and take in paint mist in wet paint booth circulating water to form inclusion compound, that is, paint sludge. Can do. Since the cohesive force of the hydration reaction product fine particles is weaker than that of the organic treatment agent, the hydrated reaction product fine particles alone cannot form a coarse paint sludge, but a metal soap dispersed and suspended in water.
- paint mist is removed from the wet paint booth circulating water.
- the applied paint mist treatment agent is also recovered and removed by forming part of paint sludge, except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and does not remain in the circulating water. . Thus, insoluble materials do not return to the painting booth.
- the metal soap generated in the coating booth circulating water becomes a paste and promotes the coarsening of the paint sludge, so that the paint sludge can be recovered at high speed. Since the metal soap only connects the aggregates and does not wrap the aggregates like the organic chemicals, the recovered paint sludge is porous, has a high dehydration property, and can be dehydrated at high speed. Therefore, the present invention provides a paint mist treatment agent that enables high-speed recovery and high-speed dewatering of paint sludge.
- the insoluble metal soap fine particles are dispersed and attached to the foam surface film in the coating booth circulating water, destabilize the foam surface film and eliminate the foam.
- the disappearance speed of the foam exceeds the generation speed of the foam, and the circulating water in the painting booth is eliminated.
- Some of the higher fatty acid alkali salts dissolved in the water return to the painting booth while being dissolved in the water without producing metal soap, and react with calcium ions, magnesium ions, etc. in the water in the painting booth circulation tank.
- To produce insoluble metal soap and defoaming the paint booth circulating water As a result, malfunction of the painting booth circulating water pump due to foam suction, inability to manage the liquid level in the circulation tank, and corrosion of the painting booth exhaust duct due to foam scattering are prevented.
- the self-hardening inorganic compound powder includes one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime.
- Portland cement, steel slag, fly ash, paper sludge, gypsum, lime and the like form a hydration reaction product containing ettringite and / or monosulfate by a hydration hardening reaction.
- the higher fatty acid has 12 to 16 carbon atoms. If the higher fatty acid has 12 to 16 carbon atoms, the higher fatty acid alkali salt formed by the higher fatty acid can be dissolved in water, and a metal soap can be easily formed in water.
- medical agent mixing apparatus which mixes the coating mist processing agent as described in any one of Claims 1 thru
- the paint booth circulating water mixed with the paint mist and the paint mist treatment agent are stirred and mixed in the treatment tank, and the hydration reaction product fine particles aggregated between the self-hardening inorganic compound powder and water.
- a paint sludge is formed by incorporating paint mist, and then the paint sludge is coarsened by using metal soap produced by combining higher fatty acid ions dissolved in water and calcium ions dissolved in water as a paste.
- the material sludge is formed, and the coarse paint sludge is levitated using the buoyancy of the metal soap, and the insoluble metal soap fine particles are adhered to the foam surface film in the coating booth circulating water, and the foam surface film is destabilized to generate foam.
- Wet coating is characterized by defoaming the circulating water by eliminating it, dewatering the recovered paint sludge with a paint sludge recovery device and collecting it, and returning the paint booth circulating water from which paint sludge has been removed to the paint booth.
- paint sludge can be recovered at high speed, so that the volume of the treatment tank can be reduced, and consequently the entire wet coating booth circulating water recovery apparatus can be reduced in volume.
- the paint mist is an aqueous paint mist.
- the paint mist is a solvent-based paint mist
- the paint mist in the coating booth circulating water supplied to the wet coating booth circulating water recovery apparatus is a pretreatment tank and an anti-tackifying agent charging device. And a non-tackifying device provided with a stirring device.
- the wet coating booth circulating water recovery apparatus can be used for processing a coating booth circulating water containing a paint mist of a water-based paint and a coating booth circulating water including a paint mist of a solvent-based paint. When this apparatus is used for processing the coating booth circulating water containing the paint mist of the solvent-based coating, it is desirable that the coating mist in the coating booth circulating water flowing into the processing tank is previously tack-free.
- the wet painting booth circulating water recovery device A includes a treatment tank 1.
- the processing tank 1 has a drug mixing part 1a and an aggregate floating part 1b communicating with the drug mixing part 1a.
- a drug mixing device 2 is disposed above the drug mixing unit 1a.
- a stirrer 3 is disposed in the aggregation floating portion 1b.
- a paint sludge dewatering device 4 having an endless belt 4a of a dewatering screen and a water receiving tank 4b below the endless belt 4a is disposed adjacent to the aggregation floating portion 1b.
- the operation of the wet paint booth circulating water recovery device A configured as described above will be described. From the bottom of wet paint booth B, the paint booth circulating water mixed with paint mist flows into Tsugaike C, and the paint booth circulating water containing a large amount of paint mist sucked up from the top of Tsugaike C It flows into the medicine mixing part 1a.
- the paint mist removing agent discharged from the medicine mixing device 2 is put into the medicine mixing section 1a.
- the paint mist treating agent is a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder.
- a powder containing one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime is desirable.
- the water-soluble higher fatty acid alkali salt powder preferably has a higher fatty acid having 12 to 16 carbon atoms in order to ensure water solubility.
- the self-hardening inorganic compound powder, the water-soluble higher fatty acid alkali salt powder and water are stirred and mixed in the agglomerated floating part 1b by the stirrer 3, and the ettringite and / or mono hydrate by the hydration hardening reaction between the self-hardening inorganic compound powder and water. Hydrated reaction product fine particles containing sulfate are formed, and the water-soluble higher fatty acid alkali salt dissolves in water and dissociates into higher fatty acid ions and alkali metal ions such as sodium ions and potassium ions. It combines with calcium ions dissolved in water from hard inorganic compounds to form insoluble metal soaps.
- Hydration reaction product fine particles containing ettringite and / or monosulfate have cohesion and curing power, and take in paint mist in wet paint booth circulating water to form inclusion compound, that is, paint sludge. Can do. Since the cohesive force of the hydration reaction product fine particles is weaker than that of the organic coagulant, the hydrated reaction product fine particles alone cannot form a coarse paint sludge, but a metal soap dispersed and suspended in water. The fine particles become paste, and the paint sludge is bonded to each other and rapidly grown to form a coarse paint sludge. The coarse paint sludge rises quickly due to the buoyancy of the metal soap.
- the floated paint sludge is transported on the water receiving tank 4b by the dewatering screen endless belt 4a of the paint sludge dewatering device 4, dehydrated during transport, taken out from the paint sludge dewatering device 4, and treated as industrial waste.
- the water removed from the paint sludge is accumulated in the water receiving tank 4b, returned to the pond C via the piping, and returned to the wet coating booth B from the pond C via the piping.
- the paint mist treatment agent charged into the treatment tank 1 also forms part of the paint sludge except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and wet paint booth circulating water Recovered from.
- the coating booth circulating water returned from the water receiving tank 4b to Tsugaike C does not contain insoluble substances.
- the metal soap fine particles generated in the treatment tank 1 are dispersed and adhered to the foam surface film contained in the coating booth circulating water in the treatment tank 1 to destabilize the foam surface film and eliminate the foam.
- the foam disappearance rate exceeds the foam generation rate, and the coating booth circulating water in the treatment tank 1 is defoamed.
- a part of the higher fatty acid alkali salt dissolved in water is returned to Tsugaike C without dissolving metal soap, returned to Tsugaike C, returned to wet painting booth B, and drainage pit of painting booth B Inside or in Tsugaike C, it reacts with calcium ions, magnesium ions, etc.
- the wet hydration booth circulating water is produced by the cohesive strength and curing power of the hydration reaction product fine particles containing ettringite and / or monosulfate.
- the inclusion compound that is, paint sludge
- paint sludge can be easily formed by taking in the mixed paint mist, and the metal soap generated in the paint booth circulating water becomes a paste, and the paint sludge is bonded to each other. Since the growth is promoted, it is possible to generate a coarse paint sludge at a high speed, and thus, it is possible to recover the paint sludge at a high speed.
- the paint mist treating agent according to the present invention can be used for mist removal of water-based paints in circulating water and mist removal of solvent-based paints.
- the non-adhesion treatment device D shown in FIG. 2 may be disposed upstream of the wet coating booth circulating water recovery device A with respect to the flow of the coating booth circulating water.
- the non-tackifying treatment apparatus D includes a pretreatment tank 5, a non-tackifying agent charging apparatus 6, and a stirring device 7 disposed in the pretreatment tank 5.
- An anti-adhesive agent is added to the paint booth circulating water containing the paint mist that has flowed into the vessel and stirred to make the paint mist non-adhesive.
- the paint booth circulating water containing the non-adhesive paint mist is sent to the paint booth circulating water recovery apparatus A.
- the present invention is widely applicable to the treatment of wet paint booth circulating water.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
[Problem] To provide: a coating material mist treatment agent that is a powder, has defoaming properties and can impart high dehydration properties and high-speed buoyance to a coating material sludge; and a reduced-volume device that is for recovering wet-coating-booth circulating water and that uses the treatment agent. [Solution] The coating material mist treatment agent is a mixed powder of a powder that is a water-soluble alkali salt of a higher fatty acid, and a powder that is a self-hardening inorganic compound that generates Ettringite and/or a monosulphate as a result of a hydration hardening reaction. The device for recovering wet-coating-booth circulating water is provided with: a treatment tank; a chemical admixture device that causes the admixing of the coating material mist treatment agent in the wet-coating-booth circulating water to which a coating material mist in the treatment tank has become admixed; an agitation device disposed within the treatment tank; and a coating material sludge dehydration device connected to the treatment tank.
Description
本発明は湿式塗装ブース循環水の塗料ミスト処理剤及び湿式塗装ブース循環水回収装置に関するものである。
The present invention relates to a paint mist treating agent for wet paint booth circulating water and a wet paint booth circulating water recovery apparatus.
湿式塗装ブース循環水に混入した塗料ミストを処理する塗料ミスト処理剤として、特許文献1、2等に記載されているように、有機系薬剤と無機系薬剤とが従来から使用されている。
As described in Patent Documents 1 and 2, etc., organic chemicals and inorganic chemicals have been conventionally used as a paint mist treating agent for treating paint mist mixed in circulating water in a wet paint booth.
有機系薬剤には、当該薬剤を糊剤とする塗料ミストの凝集体である塗料スラッジが樹脂ポリマーで包まれるので、回収した塗料スラッジの脱水が難しいという問題があり、無機系薬剤には、当該薬剤が生成する不溶性微粒子の凝集力が弱いので、塗料ミストを取り込んだ不溶性微粒子凝集体である塗料スラッジの成長速度が遅く、塗料スラッジの高速回収が難しいという問題がある。
本発明は上記問題に鑑みてなされたものであり、塗料スラッジの高速回収と高速脱水とを可能にする湿式塗装ブース循環水の塗料ミスト処理剤と、当該塗料ミスト処理剤を使用する減容化された湿式塗装ブース循環水回収装置を提供することを目的とする。 Organic chemicals have the problem that paint sludge, which is an agglomeration of paint mist using the chemical as a paste, is wrapped with a resin polymer, so that it is difficult to dewater the recovered paint sludge. Since the insoluble fine particles generated by the drug have a weak cohesive force, there is a problem in that the growth rate of the paint sludge, which is an insoluble fine particle aggregate incorporating the paint mist, is slow and it is difficult to recover the paint sludge at high speed.
The present invention has been made in view of the above problems, and a paint mist treatment agent for wet paint booth circulating water that enables high-speed recovery and high-speed dewatering of paint sludge, and volume reduction using the paint mist treatment agent. An object is to provide a wet paint booth circulating water recovery device.
本発明は上記問題に鑑みてなされたものであり、塗料スラッジの高速回収と高速脱水とを可能にする湿式塗装ブース循環水の塗料ミスト処理剤と、当該塗料ミスト処理剤を使用する減容化された湿式塗装ブース循環水回収装置を提供することを目的とする。 Organic chemicals have the problem that paint sludge, which is an agglomeration of paint mist using the chemical as a paste, is wrapped with a resin polymer, so that it is difficult to dewater the recovered paint sludge. Since the insoluble fine particles generated by the drug have a weak cohesive force, there is a problem in that the growth rate of the paint sludge, which is an insoluble fine particle aggregate incorporating the paint mist, is slow and it is difficult to recover the paint sludge at high speed.
The present invention has been made in view of the above problems, and a paint mist treatment agent for wet paint booth circulating water that enables high-speed recovery and high-speed dewatering of paint sludge, and volume reduction using the paint mist treatment agent. An object is to provide a wet paint booth circulating water recovery device.
上記課題を解決するために、本発明においては、水和硬化反応でエトリンガイト及び/又はモノサルフェートを生成する自硬性無機化合物粉末と水溶性高級脂肪酸アルカリ塩粉末との混合粉末であって、湿式塗装ブース循環水に混入した塗料ミストの分離に使用されることを特徴とする塗料ミスト処理剤を提供する。
自硬性無機化合物粉末と水との水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子が形成されると共に、水溶性高級脂肪酸アルカリ塩が水中に溶けて高級脂肪酸イオンとナトリウムイオンやカリウムイオン等のアルカリ金属イオンとに解離し、高級脂肪酸イオンが自硬性無機化合物から水中に溶解したカルシウムイオンと結合して不溶性の金属石鹸を生成する。エトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子は、凝集力と硬化力とを有しており、湿式塗装ブース循環水中の塗料ミストを取り込んで包接化合物、即ち塗料スラッジを形成することができる。前記水和反応生成物微粒子の凝集力は有機系処理剤に比べて弱いので、前記水和反応生成物微粒子だけでは粗大化した塗料スラッジを形成することはできないが、水中に分散浮遊する金属石鹸微粒子が糊剤となって、塗料スラッジ同士を結合させて速やかに成長させ、粗大化した塗料スラッジを形成する。粗大化した塗料スラッジは、金属石鹸の浮力により速やかに浮上する。
浮上した塗料スラッジを回収することにより、湿式塗装ブース循環水から塗料ミストが除去される。
投入された塗料ミスト処理剤も、金属石鹸を形成することなく水中に溶解する高級脂肪酸アルカリ塩の一部を除いて、塗料スラッジの一部を形成して回収除去され、循環水中には残留しない。従って、不溶性物質は塗装ブースに還流しない。
本発明に係る塗料ミスト処理剤を使用すれば、塗装ブース循環水中で生成された金属石鹸が糊剤となって、塗料スラッジの粗大化を促進させるので、塗料スラッジの高速回収が可能である。金属石鹸は凝集体同士を繋ぐのみで、有機系薬剤のように凝集体を包み込まないので、回収された塗料スラッジは多孔性であり、脱水性に富み高速脱水が可能である。
従って、本発明により、塗料スラッジの高速回収と高速脱水とを可能にする塗料ミスト処理剤が提供される。
また本発明に係る塗料ミスト処理剤を使用すれば、不溶性金属石鹸微粒子が塗装ブース循環水中の泡の表面膜に分散付着し、泡表面膜を不安定化させて泡を消滅させる。泡の消滅速度が泡の発生速度を上回って塗装ブース循環水が消泡される。水中に溶けた高級脂肪酸アルカリ塩の一部は、金属石鹸を生成することなく水中に溶けたままで塗装ブースに還流し、塗装ブースの循環槽内で、水中のカルシウムイオン、マグネシウムイオン等と反応して不溶性金属石鹸を生成し、塗装ブース循環水を消泡する。この結果、泡吸引に伴う塗装ブース循環水ポンプの作動不良や、循環槽の液面管理不能や、泡の飛散による塗装ブース排気ダクトの腐食等が防止される。 In order to solve the above problems, in the present invention, a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder, which is a wet coating Provided is a paint mist treating agent which is used for separating paint mist mixed in booth circulating water.
Hydration reaction product fine particles containing ettringite and / or monosulfate are formed by a hydration hardening reaction between self-hardening inorganic compound powder and water, and a water-soluble higher fatty acid alkali salt dissolves in water to give higher fatty acid ions and sodium. It dissociates into alkali metal ions such as ions and potassium ions, and higher fatty acid ions combine with calcium ions dissolved in water from self-hardening inorganic compounds to form insoluble metal soaps. Hydration reaction product fine particles containing ettringite and / or monosulfate have cohesion and curing power, and take in paint mist in wet paint booth circulating water to form inclusion compound, that is, paint sludge. Can do. Since the cohesive force of the hydration reaction product fine particles is weaker than that of the organic treatment agent, the hydrated reaction product fine particles alone cannot form a coarse paint sludge, but a metal soap dispersed and suspended in water. The fine particles become paste, and the paint sludge is bonded to each other and rapidly grown to form a coarse paint sludge. The coarse paint sludge rises quickly due to the buoyancy of the metal soap.
By collecting the floating paint sludge, paint mist is removed from the wet paint booth circulating water.
The applied paint mist treatment agent is also recovered and removed by forming part of paint sludge, except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and does not remain in the circulating water. . Thus, insoluble materials do not return to the painting booth.
When the paint mist treating agent according to the present invention is used, the metal soap generated in the coating booth circulating water becomes a paste and promotes the coarsening of the paint sludge, so that the paint sludge can be recovered at high speed. Since the metal soap only connects the aggregates and does not wrap the aggregates like the organic chemicals, the recovered paint sludge is porous, has a high dehydration property, and can be dehydrated at high speed.
Therefore, the present invention provides a paint mist treatment agent that enables high-speed recovery and high-speed dewatering of paint sludge.
If the paint mist treating agent according to the present invention is used, the insoluble metal soap fine particles are dispersed and attached to the foam surface film in the coating booth circulating water, destabilize the foam surface film and eliminate the foam. The disappearance speed of the foam exceeds the generation speed of the foam, and the circulating water in the painting booth is eliminated. Some of the higher fatty acid alkali salts dissolved in the water return to the painting booth while being dissolved in the water without producing metal soap, and react with calcium ions, magnesium ions, etc. in the water in the painting booth circulation tank. To produce insoluble metal soap and defoaming the paint booth circulating water. As a result, malfunction of the painting booth circulating water pump due to foam suction, inability to manage the liquid level in the circulation tank, and corrosion of the painting booth exhaust duct due to foam scattering are prevented.
自硬性無機化合物粉末と水との水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子が形成されると共に、水溶性高級脂肪酸アルカリ塩が水中に溶けて高級脂肪酸イオンとナトリウムイオンやカリウムイオン等のアルカリ金属イオンとに解離し、高級脂肪酸イオンが自硬性無機化合物から水中に溶解したカルシウムイオンと結合して不溶性の金属石鹸を生成する。エトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子は、凝集力と硬化力とを有しており、湿式塗装ブース循環水中の塗料ミストを取り込んで包接化合物、即ち塗料スラッジを形成することができる。前記水和反応生成物微粒子の凝集力は有機系処理剤に比べて弱いので、前記水和反応生成物微粒子だけでは粗大化した塗料スラッジを形成することはできないが、水中に分散浮遊する金属石鹸微粒子が糊剤となって、塗料スラッジ同士を結合させて速やかに成長させ、粗大化した塗料スラッジを形成する。粗大化した塗料スラッジは、金属石鹸の浮力により速やかに浮上する。
浮上した塗料スラッジを回収することにより、湿式塗装ブース循環水から塗料ミストが除去される。
投入された塗料ミスト処理剤も、金属石鹸を形成することなく水中に溶解する高級脂肪酸アルカリ塩の一部を除いて、塗料スラッジの一部を形成して回収除去され、循環水中には残留しない。従って、不溶性物質は塗装ブースに還流しない。
本発明に係る塗料ミスト処理剤を使用すれば、塗装ブース循環水中で生成された金属石鹸が糊剤となって、塗料スラッジの粗大化を促進させるので、塗料スラッジの高速回収が可能である。金属石鹸は凝集体同士を繋ぐのみで、有機系薬剤のように凝集体を包み込まないので、回収された塗料スラッジは多孔性であり、脱水性に富み高速脱水が可能である。
従って、本発明により、塗料スラッジの高速回収と高速脱水とを可能にする塗料ミスト処理剤が提供される。
また本発明に係る塗料ミスト処理剤を使用すれば、不溶性金属石鹸微粒子が塗装ブース循環水中の泡の表面膜に分散付着し、泡表面膜を不安定化させて泡を消滅させる。泡の消滅速度が泡の発生速度を上回って塗装ブース循環水が消泡される。水中に溶けた高級脂肪酸アルカリ塩の一部は、金属石鹸を生成することなく水中に溶けたままで塗装ブースに還流し、塗装ブースの循環槽内で、水中のカルシウムイオン、マグネシウムイオン等と反応して不溶性金属石鹸を生成し、塗装ブース循環水を消泡する。この結果、泡吸引に伴う塗装ブース循環水ポンプの作動不良や、循環槽の液面管理不能や、泡の飛散による塗装ブース排気ダクトの腐食等が防止される。 In order to solve the above problems, in the present invention, a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder, which is a wet coating Provided is a paint mist treating agent which is used for separating paint mist mixed in booth circulating water.
Hydration reaction product fine particles containing ettringite and / or monosulfate are formed by a hydration hardening reaction between self-hardening inorganic compound powder and water, and a water-soluble higher fatty acid alkali salt dissolves in water to give higher fatty acid ions and sodium. It dissociates into alkali metal ions such as ions and potassium ions, and higher fatty acid ions combine with calcium ions dissolved in water from self-hardening inorganic compounds to form insoluble metal soaps. Hydration reaction product fine particles containing ettringite and / or monosulfate have cohesion and curing power, and take in paint mist in wet paint booth circulating water to form inclusion compound, that is, paint sludge. Can do. Since the cohesive force of the hydration reaction product fine particles is weaker than that of the organic treatment agent, the hydrated reaction product fine particles alone cannot form a coarse paint sludge, but a metal soap dispersed and suspended in water. The fine particles become paste, and the paint sludge is bonded to each other and rapidly grown to form a coarse paint sludge. The coarse paint sludge rises quickly due to the buoyancy of the metal soap.
By collecting the floating paint sludge, paint mist is removed from the wet paint booth circulating water.
The applied paint mist treatment agent is also recovered and removed by forming part of paint sludge, except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and does not remain in the circulating water. . Thus, insoluble materials do not return to the painting booth.
When the paint mist treating agent according to the present invention is used, the metal soap generated in the coating booth circulating water becomes a paste and promotes the coarsening of the paint sludge, so that the paint sludge can be recovered at high speed. Since the metal soap only connects the aggregates and does not wrap the aggregates like the organic chemicals, the recovered paint sludge is porous, has a high dehydration property, and can be dehydrated at high speed.
Therefore, the present invention provides a paint mist treatment agent that enables high-speed recovery and high-speed dewatering of paint sludge.
If the paint mist treating agent according to the present invention is used, the insoluble metal soap fine particles are dispersed and attached to the foam surface film in the coating booth circulating water, destabilize the foam surface film and eliminate the foam. The disappearance speed of the foam exceeds the generation speed of the foam, and the circulating water in the painting booth is eliminated. Some of the higher fatty acid alkali salts dissolved in the water return to the painting booth while being dissolved in the water without producing metal soap, and react with calcium ions, magnesium ions, etc. in the water in the painting booth circulation tank. To produce insoluble metal soap and defoaming the paint booth circulating water. As a result, malfunction of the painting booth circulating water pump due to foam suction, inability to manage the liquid level in the circulation tank, and corrosion of the painting booth exhaust duct due to foam scattering are prevented.
本発明の好ましい態様においては、自硬性無機化合物粉末は、ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰のうちの一種又は二種の粉末を含む。
ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰等は、水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物を形成する。
本発明の好ましい態様においては、高級脂肪酸の炭素数は12乃至16である。
高級脂肪酸の炭素数が12乃至16であれば、当該高級脂肪酸が形成する高級脂肪酸アルカリ塩は、水中に溶解でき、水中で金属石鹸を容易に形成できる。 In a preferred embodiment of the present invention, the self-hardening inorganic compound powder includes one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime.
Portland cement, steel slag, fly ash, paper sludge, gypsum, lime and the like form a hydration reaction product containing ettringite and / or monosulfate by a hydration hardening reaction.
In a preferred embodiment of the present invention, the higher fatty acid has 12 to 16 carbon atoms.
If the higher fatty acid has 12 to 16 carbon atoms, the higher fatty acid alkali salt formed by the higher fatty acid can be dissolved in water, and a metal soap can be easily formed in water.
ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰等は、水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物を形成する。
本発明の好ましい態様においては、高級脂肪酸の炭素数は12乃至16である。
高級脂肪酸の炭素数が12乃至16であれば、当該高級脂肪酸が形成する高級脂肪酸アルカリ塩は、水中に溶解でき、水中で金属石鹸を容易に形成できる。 In a preferred embodiment of the present invention, the self-hardening inorganic compound powder includes one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime.
Portland cement, steel slag, fly ash, paper sludge, gypsum, lime and the like form a hydration reaction product containing ettringite and / or monosulfate by a hydration hardening reaction.
In a preferred embodiment of the present invention, the higher fatty acid has 12 to 16 carbon atoms.
If the higher fatty acid has 12 to 16 carbon atoms, the higher fatty acid alkali salt formed by the higher fatty acid can be dissolved in water, and a metal soap can be easily formed in water.
本発明においては、処理槽と、処理槽内の塗料ミストが混入した湿式塗装ブース循環水に請求項1乃至3の何れか一項に記載の塗料ミスト処理剤を混入させる薬剤混入装置と、処理槽内に配設された攪拌装置と、処理槽に接続した塗料スラッジ脱水装置とを備え、塗料ミストが混入した塗装ブース循環水に請求項1乃至3の何れか1項に記載の塗料ミスト処理剤を投入し、塗料ミストが混入した塗装ブース循環水と前記塗料ミスト処理剤とを処理槽内で攪拌混合し、自硬性無機化合物粉末と水との水和反応生成物微粒子の凝集体中に塗料ミストを取り込んで塗料スラッジを形成し、更に、水中に溶解した高級脂肪酸イオンと水中に溶解したカルシウムイオンとが結合して生成された金属石鹸を糊剤として、塗料スラッジ同士を結合させて粗大塗料スラッジを形成し、金属石鹸の浮力を利用して粗大塗料スラッジを浮上させると共に、不溶性金属石鹸微粒子を塗装ブース循環水中の泡表面膜に付着させ、泡表面膜を不安定化させて泡を消滅させることにより循環水を消泡し、浮上した塗料スラッジを塗料スラッジ回収装置で脱水して回収し、塗料スラッジが除去された塗装ブース循環水を塗装ブースへ還流させることを特徴とする湿式塗装ブース循環水回収装置を提供する。
本発明に係る湿式塗装ブース循環水回収装置においては、塗料スラッジを高速回収できるので、処理槽を減容化でき、ひいては湿式塗装ブース循環水回収装置全体を減容化できる。 In this invention, the chemical | medical agent mixing apparatus which mixes the coating mist processing agent as described in any one of Claims 1 thru | or 3 with the processing tank, the wet coating booth circulating water with which the coating mist in the processing tank was mixed, processing A paint mist treatment according to any one of claims 1 to 3, comprising a stirring device disposed in the tank and a paint sludge dewatering device connected to the treatment tank, wherein the paint booth circulating water mixed with the paint mist is mixed. The paint booth circulating water mixed with the paint mist and the paint mist treatment agent are stirred and mixed in the treatment tank, and the hydration reaction product fine particles aggregated between the self-hardening inorganic compound powder and water. A paint sludge is formed by incorporating paint mist, and then the paint sludge is coarsened by using metal soap produced by combining higher fatty acid ions dissolved in water and calcium ions dissolved in water as a paste. The material sludge is formed, and the coarse paint sludge is levitated using the buoyancy of the metal soap, and the insoluble metal soap fine particles are adhered to the foam surface film in the coating booth circulating water, and the foam surface film is destabilized to generate foam. Wet coating is characterized by defoaming the circulating water by eliminating it, dewatering the recovered paint sludge with a paint sludge recovery device and collecting it, and returning the paint booth circulating water from which paint sludge has been removed to the paint booth. Provide booth circulating water recovery device.
In the wet paint booth circulating water recovery apparatus according to the present invention, paint sludge can be recovered at high speed, so that the volume of the treatment tank can be reduced, and consequently the entire wet coating booth circulating water recovery apparatus can be reduced in volume.
本発明に係る湿式塗装ブース循環水回収装置においては、塗料スラッジを高速回収できるので、処理槽を減容化でき、ひいては湿式塗装ブース循環水回収装置全体を減容化できる。 In this invention, the chemical | medical agent mixing apparatus which mixes the coating mist processing agent as described in any one of Claims 1 thru | or 3 with the processing tank, the wet coating booth circulating water with which the coating mist in the processing tank was mixed, processing A paint mist treatment according to any one of claims 1 to 3, comprising a stirring device disposed in the tank and a paint sludge dewatering device connected to the treatment tank, wherein the paint booth circulating water mixed with the paint mist is mixed. The paint booth circulating water mixed with the paint mist and the paint mist treatment agent are stirred and mixed in the treatment tank, and the hydration reaction product fine particles aggregated between the self-hardening inorganic compound powder and water. A paint sludge is formed by incorporating paint mist, and then the paint sludge is coarsened by using metal soap produced by combining higher fatty acid ions dissolved in water and calcium ions dissolved in water as a paste. The material sludge is formed, and the coarse paint sludge is levitated using the buoyancy of the metal soap, and the insoluble metal soap fine particles are adhered to the foam surface film in the coating booth circulating water, and the foam surface film is destabilized to generate foam. Wet coating is characterized by defoaming the circulating water by eliminating it, dewatering the recovered paint sludge with a paint sludge recovery device and collecting it, and returning the paint booth circulating water from which paint sludge has been removed to the paint booth. Provide booth circulating water recovery device.
In the wet paint booth circulating water recovery apparatus according to the present invention, paint sludge can be recovered at high speed, so that the volume of the treatment tank can be reduced, and consequently the entire wet coating booth circulating water recovery apparatus can be reduced in volume.
本発明の好ましい態様においては、塗料ミストは水性塗料の塗料ミストである。
本発明の好ましい態様においては、塗料ミストは溶剤系塗料の塗料ミストであり、湿式塗装ブース循環水回収装置に供給される塗装ブース循環水中の塗料ミストは、前処理槽と不粘着化剤投入装置と攪拌装置とを備える不粘着化装置で予め不粘着化処理されている。
本発明に係る湿式塗装ブース循環水回収装置は、水性塗料の塗料ミストを含む塗装ブース循環水の処理にも、溶剤系塗料の塗料ミストを含む塗装ブース循環水の処理にも使用できる。本装置を溶剤系塗料の塗料ミストを含む塗装ブース循環水の処理に使用する際には、処理槽に流入する塗装ブース循環水中の塗料ミストを、予め不粘着化処理しておくのが望ましい。 In a preferred embodiment of the present invention, the paint mist is an aqueous paint mist.
In a preferred embodiment of the present invention, the paint mist is a solvent-based paint mist, and the paint mist in the coating booth circulating water supplied to the wet coating booth circulating water recovery apparatus is a pretreatment tank and an anti-tackifying agent charging device. And a non-tackifying device provided with a stirring device.
The wet coating booth circulating water recovery apparatus according to the present invention can be used for processing a coating booth circulating water containing a paint mist of a water-based paint and a coating booth circulating water including a paint mist of a solvent-based paint. When this apparatus is used for processing the coating booth circulating water containing the paint mist of the solvent-based coating, it is desirable that the coating mist in the coating booth circulating water flowing into the processing tank is previously tack-free.
本発明の好ましい態様においては、塗料ミストは溶剤系塗料の塗料ミストであり、湿式塗装ブース循環水回収装置に供給される塗装ブース循環水中の塗料ミストは、前処理槽と不粘着化剤投入装置と攪拌装置とを備える不粘着化装置で予め不粘着化処理されている。
本発明に係る湿式塗装ブース循環水回収装置は、水性塗料の塗料ミストを含む塗装ブース循環水の処理にも、溶剤系塗料の塗料ミストを含む塗装ブース循環水の処理にも使用できる。本装置を溶剤系塗料の塗料ミストを含む塗装ブース循環水の処理に使用する際には、処理槽に流入する塗装ブース循環水中の塗料ミストを、予め不粘着化処理しておくのが望ましい。 In a preferred embodiment of the present invention, the paint mist is an aqueous paint mist.
In a preferred embodiment of the present invention, the paint mist is a solvent-based paint mist, and the paint mist in the coating booth circulating water supplied to the wet coating booth circulating water recovery apparatus is a pretreatment tank and an anti-tackifying agent charging device. And a non-tackifying device provided with a stirring device.
The wet coating booth circulating water recovery apparatus according to the present invention can be used for processing a coating booth circulating water containing a paint mist of a water-based paint and a coating booth circulating water including a paint mist of a solvent-based paint. When this apparatus is used for processing the coating booth circulating water containing the paint mist of the solvent-based coating, it is desirable that the coating mist in the coating booth circulating water flowing into the processing tank is previously tack-free.
本発明の実施例に係る塗料ミスト処理剤と湿式塗装ブース循環水回収装置とを説明する。
図1に示すように、湿式塗装ブース循環水回収装置Aは、処理槽1を備えている。処理槽1は、薬剤混入部1aと、薬剤混入部1aに連通する凝集浮上部1bとを有している。
薬剤混入部1aの上方に、薬剤混入装置2が配設されている。
凝集浮上部1b内に攪拌装置3が配設されている。
凝集浮上部1bに隣接して、脱水スクリーンの無端ベルト4aと無端ベルト4a下方の水受け槽4bとを有する塗料スラッジ脱水装置4が配設されている。 A paint mist treating agent and a wet paint booth circulating water recovery device according to an embodiment of the present invention will be described.
As shown in FIG. 1, the wet painting booth circulating water recovery device A includes a treatment tank 1. The processing tank 1 has adrug mixing part 1a and an aggregate floating part 1b communicating with the drug mixing part 1a.
Adrug mixing device 2 is disposed above the drug mixing unit 1a.
A stirrer 3 is disposed in theaggregation floating portion 1b.
A paintsludge dewatering device 4 having an endless belt 4a of a dewatering screen and a water receiving tank 4b below the endless belt 4a is disposed adjacent to the aggregation floating portion 1b.
図1に示すように、湿式塗装ブース循環水回収装置Aは、処理槽1を備えている。処理槽1は、薬剤混入部1aと、薬剤混入部1aに連通する凝集浮上部1bとを有している。
薬剤混入部1aの上方に、薬剤混入装置2が配設されている。
凝集浮上部1b内に攪拌装置3が配設されている。
凝集浮上部1bに隣接して、脱水スクリーンの無端ベルト4aと無端ベルト4a下方の水受け槽4bとを有する塗料スラッジ脱水装置4が配設されている。 A paint mist treating agent and a wet paint booth circulating water recovery device according to an embodiment of the present invention will be described.
As shown in FIG. 1, the wet painting booth circulating water recovery device A includes a treatment tank 1. The processing tank 1 has a
A
A stirrer 3 is disposed in the
A paint
上述のように構成された、湿式塗装ブース循環水回収装置Aの作動を説明する。
湿式塗装ブースBの底部から、塗料ミストが混入した塗装ブース循環水が滓池Cに流入し、滓池Cの上部から吸い上げられた塗料ミストを多量に含む塗装ブース循環水が、処理槽1の薬剤混入部1aに流入する。
薬剤混入装置2から吐出した塗料ミスト除去剤が薬剤混入部1aに投入される。
塗料ミスト処理剤は、水和硬化反応でエトリンガイト及び/又はモノサルフェートを生成する自硬性無機化合物粉末と、水溶性高級脂肪酸アルカリ塩の粉末との混合粉末である。水和硬化反応でエトリンガイト及び又はモノサルフェートを生成する自硬性無機化合物粉末として、ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰のうちの一種又は二種の粉末を含むものが望ましい。水溶性高級脂肪酸アルカリ塩の粉末として、水溶性を担保すべく高級脂肪酸の炭素数が12乃至16のものが望ましい。
塗料ミスト処理剤が混入された塗装ブース循環水は、薬剤混入部1aから凝集浮上部1bへ流入する。
凝集浮上部1bヘ流入した塗装ブース循環水は、攪拌装置3によって攪拌される。
凝集浮上部1b内で自硬性無機化合物粉末と水溶性高級脂肪酸アルカリ塩粉末と水とが攪拌装置3によって攪拌混合され、自硬性無機化合物粉末と水との水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子が形成されると共に、水溶性高級脂肪酸アルカリ塩が水中に溶けて高級脂肪酸イオンとナトリウムイオンやカリウムイオン等のアルカリ金属イオンとに解離し、高級脂肪酸イオンが自硬性無機化合物から水中に溶解したカルシウムイオンと結合して不溶性の金属石鹸を生成する。エトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子は、凝集力と硬化力とを有しており、湿式塗装ブース循環水中の塗料ミストを取り込んで包接化合物、即ち塗料スラッジを形成することができる。前記水和反応生成物微粒子の凝集力は有機系凝集剤に比べて弱いので、前記水和反応生成物微粒子だけでは粗大化した塗料スラッジを形成することはできないが、水中に分散浮遊する金属石鹸微粒子が糊剤となって、塗料スラッジ同士を結合させて速やかに成長させ、粗大化した塗料スラッジを形成する。粗大化した塗料スラッジは、金属石鹸の浮力により速やかに浮上する。
浮上した塗料スラッジは、塗料スラッジ脱水装置4の脱水スクリーン無端ベルト4aによって水受け槽4b上を搬送され、搬送中に脱水された後、塗料スラッジ脱水装置4から取り出されて、産業廃棄物処理される。
塗料スラッジから除去された水は水受け槽4b内に溜まり、配管を介して滓池Cに戻され、滓池Cから配管を介して湿式塗装ブースBに戻される。
処理槽1に投入された塗料ミスト処理剤も、金属石鹸を形成することなく水中に溶解する高級脂肪酸アルカリ塩の一部を除いて、塗料スラッジの一部を形成して、湿式塗装ブース循環水から回収される。従って、水受け槽4bから滓池Cに戻された塗装ブース循環水には不溶性物質は含まれない。
処理槽1内で生成した金属石鹸微粒子が処理槽1内の塗装ブース循環水に含まれる泡の表面膜に分散付着し、泡表面膜を不安定化させて泡を消滅させる。この結果、泡の消滅速度が泡の発生速度を上回って処理槽1内の塗装ブース循環水が消泡される。水中に溶けた高級脂肪酸アルカリ塩の一部は、金属石鹸を生成することなく水中に溶けたままで滓池Cに戻され、滓池Cから湿式塗装ブースBに戻され、塗装ブースBの排水ピット内、或いは滓池C内で、水中のカルシウムイオン、マグネシウムイオン等と反応して金属石鹸を生成し循環水を消泡する。この結果、泡吸引に伴う塗装ブース循環水ポンプの作動不良や、泡の飛散による塗装ブース排気ダクトの腐食や、滓池Cから溢れ出た泡による塗装工場床の汚染等が防止される。 The operation of the wet paint booth circulating water recovery device A configured as described above will be described.
From the bottom of wet paint booth B, the paint booth circulating water mixed with paint mist flows into Tsugaike C, and the paint booth circulating water containing a large amount of paint mist sucked up from the top of Tsugaike C It flows into themedicine mixing part 1a.
The paint mist removing agent discharged from themedicine mixing device 2 is put into the medicine mixing section 1a.
The paint mist treating agent is a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder. As the self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration hardening reaction, a powder containing one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime is desirable. The water-soluble higher fatty acid alkali salt powder preferably has a higher fatty acid having 12 to 16 carbon atoms in order to ensure water solubility.
The coating booth circulating water mixed with the paint mist treatment agent flows from the chemical mixingpart 1a into the aggregate floating part 1b.
The coating booth circulating water that has flowed into the flocculated floatingportion 1b is stirred by the stirring device 3.
The self-hardening inorganic compound powder, the water-soluble higher fatty acid alkali salt powder and water are stirred and mixed in the agglomerated floatingpart 1b by the stirrer 3, and the ettringite and / or mono hydrate by the hydration hardening reaction between the self-hardening inorganic compound powder and water. Hydrated reaction product fine particles containing sulfate are formed, and the water-soluble higher fatty acid alkali salt dissolves in water and dissociates into higher fatty acid ions and alkali metal ions such as sodium ions and potassium ions. It combines with calcium ions dissolved in water from hard inorganic compounds to form insoluble metal soaps. Hydration reaction product fine particles containing ettringite and / or monosulfate have cohesion and curing power, and take in paint mist in wet paint booth circulating water to form inclusion compound, that is, paint sludge. Can do. Since the cohesive force of the hydration reaction product fine particles is weaker than that of the organic coagulant, the hydrated reaction product fine particles alone cannot form a coarse paint sludge, but a metal soap dispersed and suspended in water. The fine particles become paste, and the paint sludge is bonded to each other and rapidly grown to form a coarse paint sludge. The coarse paint sludge rises quickly due to the buoyancy of the metal soap.
The floated paint sludge is transported on thewater receiving tank 4b by the dewatering screen endless belt 4a of the paint sludge dewatering device 4, dehydrated during transport, taken out from the paint sludge dewatering device 4, and treated as industrial waste. The
The water removed from the paint sludge is accumulated in thewater receiving tank 4b, returned to the pond C via the piping, and returned to the wet coating booth B from the pond C via the piping.
The paint mist treatment agent charged into the treatment tank 1 also forms part of the paint sludge except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and wet paint booth circulating water Recovered from. Therefore, the coating booth circulating water returned from thewater receiving tank 4b to Tsugaike C does not contain insoluble substances.
The metal soap fine particles generated in the treatment tank 1 are dispersed and adhered to the foam surface film contained in the coating booth circulating water in the treatment tank 1 to destabilize the foam surface film and eliminate the foam. As a result, the foam disappearance rate exceeds the foam generation rate, and the coating booth circulating water in the treatment tank 1 is defoamed. A part of the higher fatty acid alkali salt dissolved in water is returned to Tsugaike C without dissolving metal soap, returned to Tsugaike C, returned to wet painting booth B, and drainage pit of painting booth B Inside or in Tsugaike C, it reacts with calcium ions, magnesium ions, etc. in the water to produce metal soap and defoam the circulating water. As a result, malfunction of the painting booth circulating water pump due to foam suction, corrosion of the painting booth exhaust duct due to scattering of foam, contamination of the painting factory floor due to foam overflowing from Tsugaike C, and the like are prevented.
湿式塗装ブースBの底部から、塗料ミストが混入した塗装ブース循環水が滓池Cに流入し、滓池Cの上部から吸い上げられた塗料ミストを多量に含む塗装ブース循環水が、処理槽1の薬剤混入部1aに流入する。
薬剤混入装置2から吐出した塗料ミスト除去剤が薬剤混入部1aに投入される。
塗料ミスト処理剤は、水和硬化反応でエトリンガイト及び/又はモノサルフェートを生成する自硬性無機化合物粉末と、水溶性高級脂肪酸アルカリ塩の粉末との混合粉末である。水和硬化反応でエトリンガイト及び又はモノサルフェートを生成する自硬性無機化合物粉末として、ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰のうちの一種又は二種の粉末を含むものが望ましい。水溶性高級脂肪酸アルカリ塩の粉末として、水溶性を担保すべく高級脂肪酸の炭素数が12乃至16のものが望ましい。
塗料ミスト処理剤が混入された塗装ブース循環水は、薬剤混入部1aから凝集浮上部1bへ流入する。
凝集浮上部1bヘ流入した塗装ブース循環水は、攪拌装置3によって攪拌される。
凝集浮上部1b内で自硬性無機化合物粉末と水溶性高級脂肪酸アルカリ塩粉末と水とが攪拌装置3によって攪拌混合され、自硬性無機化合物粉末と水との水和硬化反応によってエトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子が形成されると共に、水溶性高級脂肪酸アルカリ塩が水中に溶けて高級脂肪酸イオンとナトリウムイオンやカリウムイオン等のアルカリ金属イオンとに解離し、高級脂肪酸イオンが自硬性無機化合物から水中に溶解したカルシウムイオンと結合して不溶性の金属石鹸を生成する。エトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子は、凝集力と硬化力とを有しており、湿式塗装ブース循環水中の塗料ミストを取り込んで包接化合物、即ち塗料スラッジを形成することができる。前記水和反応生成物微粒子の凝集力は有機系凝集剤に比べて弱いので、前記水和反応生成物微粒子だけでは粗大化した塗料スラッジを形成することはできないが、水中に分散浮遊する金属石鹸微粒子が糊剤となって、塗料スラッジ同士を結合させて速やかに成長させ、粗大化した塗料スラッジを形成する。粗大化した塗料スラッジは、金属石鹸の浮力により速やかに浮上する。
浮上した塗料スラッジは、塗料スラッジ脱水装置4の脱水スクリーン無端ベルト4aによって水受け槽4b上を搬送され、搬送中に脱水された後、塗料スラッジ脱水装置4から取り出されて、産業廃棄物処理される。
塗料スラッジから除去された水は水受け槽4b内に溜まり、配管を介して滓池Cに戻され、滓池Cから配管を介して湿式塗装ブースBに戻される。
処理槽1に投入された塗料ミスト処理剤も、金属石鹸を形成することなく水中に溶解する高級脂肪酸アルカリ塩の一部を除いて、塗料スラッジの一部を形成して、湿式塗装ブース循環水から回収される。従って、水受け槽4bから滓池Cに戻された塗装ブース循環水には不溶性物質は含まれない。
処理槽1内で生成した金属石鹸微粒子が処理槽1内の塗装ブース循環水に含まれる泡の表面膜に分散付着し、泡表面膜を不安定化させて泡を消滅させる。この結果、泡の消滅速度が泡の発生速度を上回って処理槽1内の塗装ブース循環水が消泡される。水中に溶けた高級脂肪酸アルカリ塩の一部は、金属石鹸を生成することなく水中に溶けたままで滓池Cに戻され、滓池Cから湿式塗装ブースBに戻され、塗装ブースBの排水ピット内、或いは滓池C内で、水中のカルシウムイオン、マグネシウムイオン等と反応して金属石鹸を生成し循環水を消泡する。この結果、泡吸引に伴う塗装ブース循環水ポンプの作動不良や、泡の飛散による塗装ブース排気ダクトの腐食や、滓池Cから溢れ出た泡による塗装工場床の汚染等が防止される。 The operation of the wet paint booth circulating water recovery device A configured as described above will be described.
From the bottom of wet paint booth B, the paint booth circulating water mixed with paint mist flows into Tsugaike C, and the paint booth circulating water containing a large amount of paint mist sucked up from the top of Tsugaike C It flows into the
The paint mist removing agent discharged from the
The paint mist treating agent is a mixed powder of a self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration curing reaction and a water-soluble higher fatty acid alkali salt powder. As the self-hardening inorganic compound powder that generates ettringite and / or monosulfate by a hydration hardening reaction, a powder containing one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum and lime is desirable. The water-soluble higher fatty acid alkali salt powder preferably has a higher fatty acid having 12 to 16 carbon atoms in order to ensure water solubility.
The coating booth circulating water mixed with the paint mist treatment agent flows from the chemical mixing
The coating booth circulating water that has flowed into the flocculated floating
The self-hardening inorganic compound powder, the water-soluble higher fatty acid alkali salt powder and water are stirred and mixed in the agglomerated floating
The floated paint sludge is transported on the
The water removed from the paint sludge is accumulated in the
The paint mist treatment agent charged into the treatment tank 1 also forms part of the paint sludge except for some of the higher fatty acid alkali salts that dissolve in water without forming metal soap, and wet paint booth circulating water Recovered from. Therefore, the coating booth circulating water returned from the
The metal soap fine particles generated in the treatment tank 1 are dispersed and adhered to the foam surface film contained in the coating booth circulating water in the treatment tank 1 to destabilize the foam surface film and eliminate the foam. As a result, the foam disappearance rate exceeds the foam generation rate, and the coating booth circulating water in the treatment tank 1 is defoamed. A part of the higher fatty acid alkali salt dissolved in water is returned to Tsugaike C without dissolving metal soap, returned to Tsugaike C, returned to wet painting booth B, and drainage pit of painting booth B Inside or in Tsugaike C, it reacts with calcium ions, magnesium ions, etc. in the water to produce metal soap and defoam the circulating water. As a result, malfunction of the painting booth circulating water pump due to foam suction, corrosion of the painting booth exhaust duct due to scattering of foam, contamination of the painting factory floor due to foam overflowing from Tsugaike C, and the like are prevented.
上記説明から分かるように、本発明に係る塗料ミスト処理剤を使用すれば、エトリンガイト及び/又はモノサルフェートを含む水和反応生成物微粒子が有する凝集力と硬化力とによって、湿式塗装ブース循環水に混入した塗料ミストを取り込んで包接化合物、即ち塗料スラッジを容易に形成することができ、塗装ブース循環水中で生成された金属石鹸が糊剤となって、塗料スラッジ同士を結合させて塗料スラッジの成長を促進するので、粗大塗料スラッジの高速生成が可能であり、ひいては塗料スラッジの高速回収が可能である。金属石鹸は塗料ミストを取り込んだ水和反応生成物微粒子凝集体同士を繋ぐのみで、有機系薬剤のように凝集体を包み込まないので、回収された塗料スラッジは多孔性であり、脱水性に富み高速脱水が可能である。
本発明に係る湿式塗装ブース循環水処理装置Aは、処理槽1において塗料スラッジを高速回収できるので、処理槽1を減容化でき、ひいては湿式塗装ブース循環水処理装置全体Aを減容化できる。
本発明に係る塗料ミスト処理剤は、循環水中の水系塗料のミスト除去にも、溶剤系塗料のミスト除去にも使用できる。溶剤系塗料のミスト除去の場合には、予め塗装ブース循環水に不粘着化剤を投入して、塗料ミストを不粘着化しておくのが望ましい。塗料ミストの不粘着化は、塗装ブース循環水の流れに関して湿式塗装ブース循環水回収装置Aの上流側に、図2に示す不粘着化処理装置Dを配設すれば良い。不粘着化処理装置Dは、前処理槽5と、不粘着化剤投入装置6と、前処理槽5内に配設された攪拌装置7とを備えており、滓池Cから前処理槽5に流入した塗料ミストを含む塗装ブース循環水に不粘着化剤を投入し、攪拌して、塗料ミストを不粘着化する。不粘着化された塗料ミストを含む塗装ブース循環水は塗装ブース循環水回収装置Aへ送られる。 As can be seen from the above description, when the paint mist treating agent according to the present invention is used, the wet hydration booth circulating water is produced by the cohesive strength and curing power of the hydration reaction product fine particles containing ettringite and / or monosulfate. The inclusion compound, that is, paint sludge, can be easily formed by taking in the mixed paint mist, and the metal soap generated in the paint booth circulating water becomes a paste, and the paint sludge is bonded to each other. Since the growth is promoted, it is possible to generate a coarse paint sludge at a high speed, and thus, it is possible to recover the paint sludge at a high speed. Metal soap only connects fine particles aggregates of hydration reaction products that have incorporated paint mist, and does not enclose aggregates like organic chemicals, so the recovered paint sludge is porous and rich in dehydration. High speed dehydration is possible.
Since the wet paint booth circulating water treatment apparatus A according to the present invention can recover paint sludge at high speed in the treatment tank 1, the volume of the treatment tank 1 can be reduced, and thus the entire wet paint booth circulating water treatment apparatus A can be reduced in volume. .
The paint mist treating agent according to the present invention can be used for mist removal of water-based paints in circulating water and mist removal of solvent-based paints. In the case of removing the mist of the solvent-based paint, it is desirable to put a tack-free agent in the coating booth circulating water in advance to make the paint mist tack free. For the non-adhesion of the paint mist, the non-adhesion treatment device D shown in FIG. 2 may be disposed upstream of the wet coating booth circulating water recovery device A with respect to the flow of the coating booth circulating water. The non-tackifying treatment apparatus D includes apretreatment tank 5, a non-tackifying agent charging apparatus 6, and a stirring device 7 disposed in the pretreatment tank 5. An anti-adhesive agent is added to the paint booth circulating water containing the paint mist that has flowed into the vessel and stirred to make the paint mist non-adhesive. The paint booth circulating water containing the non-adhesive paint mist is sent to the paint booth circulating water recovery apparatus A.
本発明に係る湿式塗装ブース循環水処理装置Aは、処理槽1において塗料スラッジを高速回収できるので、処理槽1を減容化でき、ひいては湿式塗装ブース循環水処理装置全体Aを減容化できる。
本発明に係る塗料ミスト処理剤は、循環水中の水系塗料のミスト除去にも、溶剤系塗料のミスト除去にも使用できる。溶剤系塗料のミスト除去の場合には、予め塗装ブース循環水に不粘着化剤を投入して、塗料ミストを不粘着化しておくのが望ましい。塗料ミストの不粘着化は、塗装ブース循環水の流れに関して湿式塗装ブース循環水回収装置Aの上流側に、図2に示す不粘着化処理装置Dを配設すれば良い。不粘着化処理装置Dは、前処理槽5と、不粘着化剤投入装置6と、前処理槽5内に配設された攪拌装置7とを備えており、滓池Cから前処理槽5に流入した塗料ミストを含む塗装ブース循環水に不粘着化剤を投入し、攪拌して、塗料ミストを不粘着化する。不粘着化された塗料ミストを含む塗装ブース循環水は塗装ブース循環水回収装置Aへ送られる。 As can be seen from the above description, when the paint mist treating agent according to the present invention is used, the wet hydration booth circulating water is produced by the cohesive strength and curing power of the hydration reaction product fine particles containing ettringite and / or monosulfate. The inclusion compound, that is, paint sludge, can be easily formed by taking in the mixed paint mist, and the metal soap generated in the paint booth circulating water becomes a paste, and the paint sludge is bonded to each other. Since the growth is promoted, it is possible to generate a coarse paint sludge at a high speed, and thus, it is possible to recover the paint sludge at a high speed. Metal soap only connects fine particles aggregates of hydration reaction products that have incorporated paint mist, and does not enclose aggregates like organic chemicals, so the recovered paint sludge is porous and rich in dehydration. High speed dehydration is possible.
Since the wet paint booth circulating water treatment apparatus A according to the present invention can recover paint sludge at high speed in the treatment tank 1, the volume of the treatment tank 1 can be reduced, and thus the entire wet paint booth circulating water treatment apparatus A can be reduced in volume. .
The paint mist treating agent according to the present invention can be used for mist removal of water-based paints in circulating water and mist removal of solvent-based paints. In the case of removing the mist of the solvent-based paint, it is desirable to put a tack-free agent in the coating booth circulating water in advance to make the paint mist tack free. For the non-adhesion of the paint mist, the non-adhesion treatment device D shown in FIG. 2 may be disposed upstream of the wet coating booth circulating water recovery device A with respect to the flow of the coating booth circulating water. The non-tackifying treatment apparatus D includes a
本発明は、湿式塗装ブース循環水の処理に広く利用可能である。
The present invention is widely applicable to the treatment of wet paint booth circulating water.
A 湿式塗装ブース循環水回収装置
B 塗装ブース
C 滓池
1 処理槽
1a 薬剤混入部
1b 凝集浮上部
2 薬剤混入装置
3 攪拌装置
4 塗料スラッジ脱水装置
4a 脱水スクリーンの無端ベルト
4b 水受け槽
D 不粘着化処理装置
5 前処理槽
6 薬剤混入装置
7 攪拌装置 A Wet painting booth circulating water recovery device B Painting booth C Tsugaike 1Treatment tank 1a Chemical mixing part 1b Coagulation floating part 2 Chemical mixing apparatus 3 Stirring device 4 Paint sludge dewatering device 4a Endless belt 4b of dewatering screen Water receiving tank D Non-adhesive Treatment device 5 Pretreatment tank 6 Drug mixing device 7 Stirrer
B 塗装ブース
C 滓池
1 処理槽
1a 薬剤混入部
1b 凝集浮上部
2 薬剤混入装置
3 攪拌装置
4 塗料スラッジ脱水装置
4a 脱水スクリーンの無端ベルト
4b 水受け槽
D 不粘着化処理装置
5 前処理槽
6 薬剤混入装置
7 攪拌装置 A Wet painting booth circulating water recovery device B Painting booth C Tsugaike 1
Claims (6)
- 水和硬化反応でエトリンガイト及び/又はモノサルフェートを生成する自硬性無機化合物粉末と水溶性高級脂肪酸アルカリ塩粉末との混合粉末であって、湿式塗装ブース循環水に混入した塗料ミストの分離に使用されることを特徴とする塗料ミスト処理剤。 This is a mixed powder of self-hardening inorganic compound powder that produces ettringite and / or monosulfate by hydration hardening reaction and water-soluble higher fatty acid alkali salt powder, and is used for separation of paint mist mixed in wet paint booth circulating water. A paint mist treatment agent characterized by that.
- 自硬性無機化合物粉末は、ポルトランドセメント、鉄鋼スラグ、フライアッシュ、ペーパースラッジ、石膏、石灰のうちの一種又は二種の粉末を含むことを特徴とする請求1に記載の塗料ミスト処理剤。 The paint mist treatment agent according to claim 1, wherein the self-hardening inorganic compound powder includes one or two kinds of powders of Portland cement, steel slag, fly ash, paper sludge, gypsum, and lime.
- 高級脂肪酸の炭素数は12乃至16であることを特徴とする請求項1又は2に記載の塗料ミスト処理剤。 The paint mist treatment agent according to claim 1 or 2, wherein the higher fatty acid has 12 to 16 carbon atoms.
- 処理槽と、処理槽内の塗料ミストが混入した湿式塗装ブース循環水に請求項1乃至3の何れか一項に記載の塗料ミスト処理剤を混入させる薬剤混入装置と、処理槽内に配設された攪拌装置と、処理槽に接続した塗料スラッジ脱水装置とを備え、塗料ミストが混入した塗装ブース循環水に請求項1乃至3の何れか1項に記載の塗料ミスト処理剤を投入し、塗料ミストが混入した塗装ブース循環水と前記塗料ミスト処理剤とを処理槽内で攪拌混合し、自硬性無機化合物粉末と水との水和反応生成物微粒子の凝集体中に塗料ミストを取り込んで塗料スラッジを形成し、更に、水中に溶解した高級脂肪酸イオンと水中に溶解したカルシウムイオンとが結合して生成された金属石鹸を糊剤として、塗料スラッジ同士を結合させて粗大塗料スラッジを形成し、金属石鹸の浮力を利用して粗大塗料スラッジを浮上させると共に、金属石鹸微粒子を塗装ブース循環水中の泡表面膜に付着させ、泡表面膜を不安定化させて泡を消滅させることにより循環水を消泡し、浮上した塗料スラッジを塗料スラッジ脱水装置で脱水して回収し、塗料スラッジが除去された塗装ブース循環水を塗装ブースへ還流させることを特徴とする湿式塗装ブース循環水回収装置。 4. A treatment tank, a chemical mixing device for mixing the paint mist treatment agent according to any one of claims 1 to 3 into the wet coating booth circulating water mixed with the paint mist in the treatment tank, and a treatment tank. The paint mist treating agent according to any one of claims 1 to 3 is added to a paint booth circulating water mixed with a paint mist, and a stirring device and a paint sludge dewatering device connected to a treatment tank. The paint booth circulating water mixed with paint mist and the paint mist treatment agent are stirred and mixed in the treatment tank, and the paint mist is taken into the aggregate of fine particles of hydration reaction product of self-hardening inorganic compound powder and water. Forms paint sludge, and then uses metal soap produced by combining higher fatty acid ions dissolved in water and calcium ions dissolved in water as a paste to form a paint sludge by bonding paint sludge together. Using the buoyancy of the metal soap, the coarse paint sludge is levitated, and the metal soap particles are adhered to the foam surface film in the paint booth circulating water, and the foam surface film is destabilized to eliminate the foam. The wet paint booth circulating water recovery device is characterized in that the paint sludge that has been defoamed and recovered is dewatered and recovered by the paint sludge dewatering device, and the circulating water in the coating booth is removed to the coating booth.
- 塗料ミストは水性塗料の塗料ミストであることを特徴とする請求項4に記載の湿式塗装ブース循環水回収装置。 The wet paint booth circulating water recovery device according to claim 4, wherein the paint mist is a paint mist of a water-based paint.
- 塗料ミストは溶剤系塗料の塗料ミストであり、湿式塗装ブース循環水回収装置に供給される塗装ブース循環水中の塗料ミストは、前処理槽と不粘着化剤投入装置と攪拌装置とを備える不粘着化装置で予め不粘着化処理されていることを特徴とする請求項4に記載の湿式塗装ブース循環水回収装置。 The paint mist is a solvent-based paint mist, and the paint mist in the coating booth circulating water supplied to the wet coating booth circulating water recovery device is a non-adhesive equipped with a pretreatment tank, a detackifying agent charging device, and a stirring device. The wet paint booth circulating water recovery device according to claim 4, wherein the wet coating booth is subjected to a tack-free treatment in advance.
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PCT/JP2012/056369 WO2013136429A1 (en) | 2012-03-13 | 2012-03-13 | Coating material mist treatment agent for wet-coating-booth circulating water and device for recovering wet-coating-booth circulating water |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018173722A1 (en) * | 2017-03-21 | 2018-09-27 | 栗田工業株式会社 | Treatment device for circulating water in wet type coating booth |
CN110694835A (en) * | 2019-11-27 | 2020-01-17 | 汪礼运 | Environment-friendly automobile maintenance spray booth |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10180007A (en) * | 1996-12-20 | 1998-07-07 | Neos Co Ltd | Coating material mist treating agent |
JPH1177061A (en) * | 1997-09-11 | 1999-03-23 | Toyota Motor Corp | Paint booth circulating water treatment agent |
JP2002113305A (en) * | 2000-10-11 | 2002-04-16 | Neos Co Ltd | Treating agent for mist of coating material |
JP2004351362A (en) * | 2003-05-30 | 2004-12-16 | Neos Co Ltd | Treating agent and treating method for coating mist |
JP2005505484A (en) * | 2001-10-05 | 2005-02-24 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Method for manufacturing building materials from raw paint sludge |
JP2005103361A (en) * | 2003-09-29 | 2005-04-21 | Neos Co Ltd | Coating material mist treatment agent and coating material mist treatment method |
-
2012
- 2012-03-13 WO PCT/JP2012/056369 patent/WO2013136429A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10180007A (en) * | 1996-12-20 | 1998-07-07 | Neos Co Ltd | Coating material mist treating agent |
JPH1177061A (en) * | 1997-09-11 | 1999-03-23 | Toyota Motor Corp | Paint booth circulating water treatment agent |
JP2002113305A (en) * | 2000-10-11 | 2002-04-16 | Neos Co Ltd | Treating agent for mist of coating material |
JP2005505484A (en) * | 2001-10-05 | 2005-02-24 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Method for manufacturing building materials from raw paint sludge |
JP2004351362A (en) * | 2003-05-30 | 2004-12-16 | Neos Co Ltd | Treating agent and treating method for coating mist |
JP2005103361A (en) * | 2003-09-29 | 2005-04-21 | Neos Co Ltd | Coating material mist treatment agent and coating material mist treatment method |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018173722A1 (en) * | 2017-03-21 | 2018-09-27 | 栗田工業株式会社 | Treatment device for circulating water in wet type coating booth |
JP2018153782A (en) * | 2017-03-21 | 2018-10-04 | 栗田工業株式会社 | Wet coating booth circulating water treatment device |
CN110694835A (en) * | 2019-11-27 | 2020-01-17 | 汪礼运 | Environment-friendly automobile maintenance spray booth |
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