CN105503097A - Curing agent for treatment of electroplating sludge, and preparation method and application method thereof - Google Patents
Curing agent for treatment of electroplating sludge, and preparation method and application method thereof Download PDFInfo
- Publication number
- CN105503097A CN105503097A CN201510874164.1A CN201510874164A CN105503097A CN 105503097 A CN105503097 A CN 105503097A CN 201510874164 A CN201510874164 A CN 201510874164A CN 105503097 A CN105503097 A CN 105503097A
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- CN
- China
- Prior art keywords
- cement
- solidifying agent
- electroplating sludge
- sand
- activated alumina
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00784—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes for disposal only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a curing agent for treatment of electroplating sludge. The curing agent comprises the following raw materials in percentage by weight: 75%-79% of cement, 10%-15% of sands, 5%-8% of sodium silicate and 6%-10% of activated aluminium oxide; the invention further discloses a preparation method and an application method of the curing agent. The curing agent has a wide application range, and overcomes potential hazards due to secondary environmental pollution of electroplating heavy metal sludge.
Description
Technical field
The present invention relates to Hazardous wastes butanedionedioxime, be specifically related to a kind of solidifying agent processing electroplating sludge and its preparation method and application method.
Background technology
Electroplating sludge is the shale product produced after electroplating wastewater processing, containing toxic heavy metals such as a large amount of chromium, cadmium, copper, nickel, zinc, is the typical hazard refuse pointed out in " National Hazard refuse register ".The method of process electroplating sludge has stable/solidification method, thermochemical treatment, humidifying process etc.At present, stabilization curing technology is the important method of process electroplating sludge, its objective is and makes the heavy metal in electroplating sludge present chemical inert, and inclusive, to reduce the danger of electroplating sludge, and convenient transport and landfill.Conventional curing can be divided into cement solidification method, lime solidification method, vitrification method, bituminization method etc.For above-mentioned several curing, cement wherein and lime solidification method raw material sources are wide, low price, simple to operate, perviousness is low, and it is strong, low to solid waste structural requirement to bear varying force, processing cost low bituminization method has that leaching rate reduces greatly, increase-volume is smaller, but invests high, higher to material water ratio, operational requirement.Vitrification method solidification effect is stablized, and is commonly used in the solidification aspect of nuclear energy waste material to be had from cementation solidifying method to cured body is stable, structural strength is high, but application surface is narrower.From economy and technical feasibility, using cement as solidify material, process is cured to mud and has more application prospect.
Mud particulate wraps up by the xln that the aquation of the solidification process of cement mainly cement is formed, the objectionable impurities in mud is made to be closed in cured body, in the curing process, because cement has higher ph, make heavy metal ion in mud in the basic conditions, generate the oxyhydroxide that is insoluble in water or carbonate etc.; In addition, some heavy metal ion also can be fixed in the lattice of cement matrix, thus effectively can prevent the leaching of heavy metal ion.Its shortcoming is because voidage is higher, still has higher leaching yield, is secondly that after solidification, increase-volume ratio is high.
Chinese patent literature CN104761113A discloses one and realizes electroplating sludge stabilization, immobilized treatment process, first pending electroplating sludge is mixed with flying dust, calcium hydroxide powder, cement and water is added respectively under Keep agitation effect, stir, obtain paste mixture paste mixture to be poured in mould and after carrying out maintenance surface to be solidified drying, by the mixing of the solidifying agent of epoxy resin and correspondence, obtaining after being evenly coated in cured body surface resin coat completion of cure can the electroplating sludge cured body of direct landfill.The method operation is comparatively complicated, and cost is higher, length consuming time, is not suitable for industrial widespread use.
Chinese patent document CN102758090A discloses a kind for the treatment of process of electroplating sludge, comprises the following steps A) mechanical dehydration process is carried out to described electroplating sludge; B) electroplating sludge after mechanical dehydration process is carried out drying, obtain dried material; C) by described dried material and slag former, reductive agent and solvent to obtain mixture, described mixture is smelted at 1200 ~ 1350 DEG C, obtains metal melt and slag.This method requires higher to the pre-treatment of electroplating sludge, and need dehydration, drying and processing, complex disposal process, market applicability is low.
Summary of the invention
Technical problem solved by the invention is to provide a kind of solidifying agent processing electroplating sludge and its preparation method and application method, thus solves the problem in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Process a solidifying agent for electroplating sludge, the raw material comprising following weight percentage is prepared from: cement 75% ~ 79%, sand 10% ~ 15%, water glass 5% ~ 8%, activated alumina 6% ~ 10%.
In the present invention, as the preferred technical scheme of one, described cement is the mixture of ordinary Portland cement and common aluminosulfate cement, and the mass ratio of ordinary Portland cement, aluminosulfate cement is 2:1.
In the present invention, as the preferred technical scheme of one, described sand is common building sand, and to be generally with quartz particles be the clastic sediment that main folder has the river of a small amount of landwaste and shale, lake, marine origin, i.e. natural sand, more preferably river sand.
In the present invention, as the preferred technical scheme of one, the mass ratio of described water glass and described activated alumina is 4:3.
Process a preparation method for electroplating sludge solidifying agent, comprise the steps:
(1) percentage ratio accounting for quality by each raw material is: cement 75% ~ 79%, sand 10% ~ 15%, water glass 5% ~ 8%, activated alumina 6% ~ 10%, chooses raw material, for subsequent use;
(2) by cement, sand, water glass, activated alumina mixing, electroplating sludge solidifying agent is obtained.
A kind of process electroplating sludge solidifying agent application method, electroplating sludge solidifying agent and water is comprised the steps: to add in the plating dewatered sludge of water ratio 78-85wt%, the mass ratio of solidifying agent and mud is 1:(0.6 ~ 1), be uniformly mixed, granulation, at room temperature static maintenance 2 ~ 4 days.
In the present invention, as the preferred technical scheme of one, described stirring, adds in Dui Ni factory original position and stirs, or stir in agitator.
Compared with prior art, beneficial effect of the present invention:
The present invention is with ordinary Portland cement and common aluminosulfate cement, river sand, water glass, activated alumina for main raw material, and technological operation is easy, and solidification effect is good, and processing cost is lower
Water glass and activated alumina is added in curing agent component of the present invention.Main component due to cement is exactly silicate (Ca, Al, Mg, Fe etc.), they add the hydration reaction accelerating cement, promote that cement gel connection solidifies, improve the intensity of cured block.Its hydrate colloid heavy metal ion produces adsorption, reduces the leaching of nuisance.Meanwhile, the cement that alumina content is high, fetters effective for the heavy metal 6 valency chromium in mud and arsenic.
Solidifying agent of the present invention is less demanding, applied widely to the source of electroplating sludge, heavy metal content, overcomes the potential hazard that electroplated heavy metals mud 2 secondary environment pollutes, and is applicable to the stabilization solidification of great majority containing the electroplating sludge of heavy metal.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1
This instance processes be chromium containing electroplating mud, water ratio is 78%.
Mud is placed in agitator, and add electroplating sludge solidifying agent and appropriate water, the mass ratio of solidifying agent, hydration mud is 1:1:0.8, and mechanical stirring makes its Homogeneous phase mixing, and mud is hardening gradually, stops stirring, granulation, at room temperature static maintenance 3 days.The leaching yield of chromium is about 0.013%, and intensity is 3.5MPa, and pH value of water solution is 7, can meet landfill and banket requirement for building.
Above-mentioned solidifying agent is mixed by cement, river sand, sodium silicate, activated alumina, and the percentage ratio that each raw material accounts for quality is: cement 75%, river sand 11%, water glass 8%, activated alumina 6%.
In above-mentioned raw materials, wherein cement is ordinary Portland cement and the mixing of common aluminosulfate cement, and the mass ratio of ordinary Portland cement, aluminosulfate cement is 2:1.River sand is common building sand, and the mass ratio of sodium silicate, powder activity aluminum oxide is 4:3.Cement, river sand, water glass, activated alumina are mixed in proportion, obtain electroplating sludge solidifying agent.
Embodiment 2
This instance processes be chromium containing electroplating mud, water ratio is 82.5%.
Mud is placed in agitator, and add electroplating sludge solidifying agent and appropriate water, the mass ratio of solidifying agent, water, mud is 1:1:0.6, and mechanical stirring makes its Homogeneous phase mixing, and mud is hardening gradually, stops stirring, at room temperature static maintenance 2 days.Granulation, the leaching yield of chromium is about 0.021%, and intensity is 3.2MPa, can meet landfill and banket requirement for building.
Solidifying agent is mixed by cement, river sand, sodium silicate, powder activity aluminum oxide, and the percentage ratio that each raw material accounts for quality is: cement 75%, river sand 10%, water glass 5%, activated alumina 10%.
Wherein cement is ordinary Portland cement and the mixing of common aluminosulfate cement, and the mass ratio of ordinary Portland cement, aluminosulfate cement is 2:1.River sand is common building sand.Cement, river sand, water glass, activated alumina are mixed in proportion, obtain electroplating sludge solidifying agent.
Embodiment 3
This instance processes be chromium containing electroplating mud, water ratio is about 85%.
In Dui Ni factory, original position adds stirring, wherein add electroplating sludge solidifying agent and appropriate water, the mass ratio of solidifying agent, water, mud is 1:1:1, and mechanical stirring makes its Homogeneous phase mixing, and mud is hardening gradually, stop stirring, granulation, at room temperature static maintenance is after 2 days, and the leaching yield of chromium is about 0.023%, intensity is 3.1MPa, can meet landfill and banket requirement for building.
Solidifying agent is mixed by cement, river sand, sodium silicate, powder activity aluminum oxide, and the percentage ratio that each raw material accounts for quality is: cement 79%, river sand 10%, water glass 5%, activated alumina 6%.
Wherein cement is ordinary Portland cement and the mixing of common aluminosulfate cement, and the mass ratio of ordinary Portland cement, aluminosulfate cement is 2:1.River sand is that common building is husky.Cement, river sand, water glass, activated alumina are mixed in proportion, obtain electroplating sludge solidifying agent.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (7)
1. process a solidifying agent for electroplating sludge, it is characterized in that: the raw material comprising following weight percentage is prepared from: cement 75% ~ 79%, sand 10% ~ 15%, water glass 5% ~ 8%, activated alumina 6% ~ 10%.
2. a kind of solidifying agent processing electroplating sludge according to claim 1, is characterized in that: described cement is the mixture of ordinary Portland cement and common aluminosulfate cement, the mass ratio of ordinary Portland cement, aluminosulfate cement is 2:1.
3. a kind of solidifying agent processing electroplating sludge according to claim 1, is characterized in that: described sand is common building sand.
4. a kind of solidifying agent processing electroplating sludge according to claim 1, is characterized in that: the mass ratio of described water glass and described activated alumina is 4:3.
5. prepare a method for solidifying agent as claimed in claim 1, it is characterized in that: comprise the steps:
(1) percentage ratio accounting for quality by each raw material is: cement 75% ~ 79%, sand 10% ~ 15%, water glass 5% ~ 8%, activated alumina 6% ~ 10%, chooses raw material, for subsequent use;
(2) by cement, sand, water glass, activated alumina mixing, electroplating sludge solidifying agent is obtained.
6. apply the method for solidifying agent as claimed in claim 1 for one kind, it is characterized in that: comprise the steps: electroplating sludge solidifying agent and water to add in the plating dewatered sludge of water ratio 78-85wt%, the mass ratio of solidifying agent and mud is 1:(0.6 ~ 1), be uniformly mixed, granulation, at room temperature static maintenance 2 ~ 4 days.
7. application method as claimed in claim 6, is characterized in that: described stirring, refers to add in Dui Ni factory original position to stir, or stirs in agitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874164.1A CN105503097A (en) | 2015-12-03 | 2015-12-03 | Curing agent for treatment of electroplating sludge, and preparation method and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510874164.1A CN105503097A (en) | 2015-12-03 | 2015-12-03 | Curing agent for treatment of electroplating sludge, and preparation method and application method thereof |
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| CN105503097A true CN105503097A (en) | 2016-04-20 |
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| CN201510874164.1A Pending CN105503097A (en) | 2015-12-03 | 2015-12-03 | Curing agent for treatment of electroplating sludge, and preparation method and application method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948589A (en) * | 2016-05-16 | 2016-09-21 | 三川德青科技有限公司 | Harmless treatment method for electroplating sludge |
| CN106348696A (en) * | 2016-08-31 | 2017-01-25 | 童风 | Rapid curing treatment agent for heavy metal wastewater filter residues |
| CN106542794A (en) * | 2016-11-10 | 2017-03-29 | 嘉善弘欣化工厂（普通合伙） | A kind of construction material firming agent and its preparation technology |
| CN107381990A (en) * | 2017-08-30 | 2017-11-24 | 湖南军信环保股份有限公司 | A kind of method of sludge curing |
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2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948589A (en) * | 2016-05-16 | 2016-09-21 | 三川德青科技有限公司 | Harmless treatment method for electroplating sludge |
| CN106348696A (en) * | 2016-08-31 | 2017-01-25 | 童风 | Rapid curing treatment agent for heavy metal wastewater filter residues |
| CN106542794A (en) * | 2016-11-10 | 2017-03-29 | 嘉善弘欣化工厂（普通合伙） | A kind of construction material firming agent and its preparation technology |
| CN107381990A (en) * | 2017-08-30 | 2017-11-24 | 湖南军信环保股份有限公司 | A kind of method of sludge curing |
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