CN104761113B - Stabilization and solidification method of electroplating sludge - Google Patents
Stabilization and solidification method of electroplating sludge Download PDFInfo
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- CN104761113B CN104761113B CN201510207253.0A CN201510207253A CN104761113B CN 104761113 B CN104761113 B CN 104761113B CN 201510207253 A CN201510207253 A CN 201510207253A CN 104761113 B CN104761113 B CN 104761113B
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- 239000010802 sludge Substances 0.000 title claims abstract description 76
- 238000009713 electroplating Methods 0.000 title claims abstract description 61
- 230000006641 stabilisation Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title abstract description 41
- 238000007711 solidification Methods 0.000 title abstract description 21
- 230000008023 solidification Effects 0.000 title abstract description 21
- 238000011105 stabilization Methods 0.000 title abstract description 7
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000003822 epoxy resin Substances 0.000 claims abstract description 21
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 10
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 239000011247 coating layer Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims abstract 2
- 238000000576 coating method Methods 0.000 claims abstract 2
- 239000000428 dust Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 239000003517 fume Substances 0.000 claims description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 5
- 150000004982 aromatic amines Chemical class 0.000 claims description 3
- 239000010791 domestic waste Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000004056 waste incineration Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 238000001723 curing Methods 0.000 abstract description 33
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 238000003756 stirring Methods 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 description 13
- 239000002920 hazardous waste Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000834 fixative Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 150000004760 silicates Chemical group 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a stabilization and solidification method of electroplating sludge, which comprises the steps of mixing electroplating sludge to be treated with fly ash, respectively adding calcium hydroxide powder, cement and water under the action of continuous stirring, and uniformly stirring to obtain a slurry mixture; pouring the slurry mixture into a mold and curing; after the surface of the solidified body is dried, mixing the epoxy resin and the corresponding solidifying agent, and uniformly coating the surface of the solidified body; and (4) after the resin coating layer is completely cured, obtaining the electroplating sludge cured body which can be directly buried. The method has low requirements on the sources of the electroplating sludge, the content of heavy metals and the particle size, and is suitable for stabilizing and solidifying most of electroplating sludge containing heavy metals.
Description
Technical field
The present invention relates to hazardous waste harmless treatment process, and in particular to a kind of stabilisation solidification side of electroplating sludge
Method.
Background technology
Electroplating industry is the important industrial trade of China, and critical role is accounted in national economy.According to the statistics of Chinese Ministry of Environmental Protection
Data, end 2012, China electroplating enterprise quantity up to 4131.Electroplating sludge is the shale of generation after electroplating wastewater processing
Product, the production of numerous electroplating enterprises produces the electroplating sludge of substantial amounts.Contain substantial amounts of heavy metal in electroplating sludge, be
《National Hazard waste register》In the typical hazard waste pointed out, if heavy metal therein is into environment, environment will be caused very
Big harm.At present, it is the important method for processing electroplating sludge to stabilize curing technology, the purpose is to make the weight in electroplating sludge
Metal is presented chemical inertness, and is contained, to reduce the danger of electroplating sludge, convenient transport and landfill.
China stabilizes the skill of solidification disposal to it to being equipped with strict management system at the stabilisation solidification of electroplating sludge
Art exploitation is also more and more deep.Conventional heavy metal stabilization method has neutralisation, oxidation-reduction method and chemical precipitation method etc., its
Middle chemical precipitation method includes sulfide precipitation, hydroxide precipitation, silicate precipitates, carbonate deposition.Conventional curing can
To be divided into：Cement solidification method, lime solidification method, thermoplastic material cures（Pitch, polyethylene, polyvinyl chloride, polypropylene, paraffin wax）
Method, thermosets solidification（Phenolic resin）Method, glass solidification method, from cementation solidifying, large-scale envelope.
For above-mentioned several curings, cement therein and lime solidification method raw material sources are wide, cheap, operate letter
Single, permeability is low, and bears that varying force is strong, low to solid waste structural requirement, and processing cost is low；Bitumen solidification method has leaching rate
Substantially reduce, increase-volume it is smaller, but investment is high, it is higher that material water ratio, operation are required；Glass solidification method solidification effect is steady
It is fixed, it is commonly used in the solidification aspect to nuclear energy waste material；Have firming body stabilization, structural strength high from cementation solidifying method, but application
Face relatively narrower.
For the stabilisation curing of electroplating sludge, Chinese patent literature CN 1193834C（Application number
03126608.8）Disclose a kind of comprehensive utilization of industrial residue, the method for curing process electroplating sludge, by alkaline industrial residue,
Electroplating sludge, water uniform stirring are into the mixing sludge that pH value is 7.5~9；By the stirring of mixing sludge, curing agent, stabilizer and water
Uniformly；By the mixture molding after stirring and it is solidified into building block；Rapid curing is carried out to building block, is air-dried.Obtained using the method
Firming body landfill after easily corroded by water body, solidification effect is influenceed larger by resting period and firming body local environment, have by
Risk of the Pollution exposure in environment.
The A of Chinese patent literature CN 102514079（Application number 201110388218.5）Disclose a kind of realization plating dirty
Mud is stabilized, the processing method of immobilization, first by electroplating sludge dewatered drying, grinds and 60 mesh sieves excessively are standby；At 25 DEG C
In~50 DEG C of temperature ranges, by electroplating sludge, curing agent, stabilizer and water in mixer strong stirring；To said mixture
Carry out molding, be solidified into building block；Block curing is air-dried.The fixative is silicates fixative, and the stabilizer is biology
Carbonaceous stabilizer.The method it is higher to the pre-treatment of electroplating sludge requirement, it is necessary to be dehydrated, dry, pulverization process, and biological carbonaceous
Preparation cost is high, and the method market applicability is low.
Epoxy resin is a kind of and its important thermosets, the acid-fast alkali-proof after with the solidification of its special curing agent, and
With larger intensity, use in the treatment of industrial enterprise's mill floor more.At present, someone uses epoxy resin and asphalt
It is made the good extraordinary ground surface material of high intensity, environmental suitability.The content of the invention
The technical problems to be solved by the invention are to provide that one kind is widely used, cost is relatively low, it is good to stabilize solidification effect
Electroplating sludge stabilisation curing.
The technical scheme for realizing the object of the invention is a kind of stabilisation curing of electroplating sludge, is comprised the following steps：
1. pending electroplating sludge is well mixed with flying dust, electroplating sludge is 4~7: 1 with the mass ratio of flying dust.
2. calcium hydroxide powder is added in the material after 1. being stirred to step, is stirred；Calcium hydroxide powder adds
The pH for entering rear sludge leachate is 7~10.
3. cement and water are added in the material after 2. being stirred to step, is stirred, obtain paste mixture；Will slurry
Shape mixture is poured into mould；The building block for solidifying postforming is positioned in cement protecting box and is conserved, maintenance terminates to take out and wind
It is dry to obtain solidified cement body.
4. after the corresponding curing agent of epoxy resin is stirred, it is coated in the water of the dry tack free that 3. step obtains
Each surface of mud firming body, resin coating layer completion of cure after 48~72 hours obtains final electroplating sludge firming body.
1. the middle flying dust for using is the fume duct fly ash or coal-fired boiler in thermal power plant of domestic waste incineration to above-mentioned steps
Fume duct fly ash.
3. middle cement and the mass ratio of electroplating sludge are 2~4: 1 to above-mentioned steps.
Further, 3. the ratio between reclaimed water addition and cement addition are 1: 2~5 to step.
Above-mentioned steps epoxy resin 4. used is bisphenol A type epoxy resin, and curing agent used is relative with epoxy resin
The aromatic amine curing agent answered；Epoxy resin is 5~7 with the consumption volume ratio of curing agent:1.
Used as optional, the thickness of step 4. epoxy resin coat is 2~3mm.
The present invention has positive effect：
（1）The present invention is first mixed electroplating sludge with flying dust when stabilization processes are carried out to electroplating sludge, electricity
Heavy metal in plating sludge is adsorbed by flying dust；Then the further stabilizing heavy metal of lime is used, and adjusts the pH value of electroplating sludge,
Ensure that most of metal is stabilized in the form of hydroxide, and the amphoteric metal such as chromium is not anti-molten.
（2）The present invention first ensures firming body when the electroplating sludge after to stabilization processes solidifies using cement
Strength and stability, then coats the surface of solidified cement body with epoxy resin, and epoxy resin clad prevents moisture attack from consolidating
Change body, make the harmful substance stable curing such as heavy metal in mud granule, it can be ensured that place postpones the poisonous substance high in electroplating sludge
Matter is completely by closed and reach effect steady in a long-term.
（3）The firming body intensity that stabilisation curing of the invention is obtained is high, with hydrophobicity, and steadily in the long term,
Reach direct landfill stabilization requirement.
（4）It is of the invention to stabilize the stabilisation solidification that curing is adapted to most of electroplating sludges containing heavy metal, its
Source, content of beary metal, particle size source to electroplating sludge is less demanding, applied widely.
（5）The stabilisation curing materials that the inventive method is used such as flying dust, lime, cement, epoxy resin etc., source are wide,
Price is low, wherein obtaining the effect of the treatment of wastes with processes of wastes against one another using flying dust.In addition, the inventive method operation is very easy.To sum up, this hair
The solidification effect that bright electroplating sludge stabilizes curing is good, and applied widely, simple to operate, cost is relatively low, is
Electroplating sludge fills the better method of pre-treatment.
Specific embodiment
（Embodiment 1）
The present embodiment treatment is graininess Zinc-containing electroplating sludge, and moisture content is about 40%, and sludge particle diameter is less than 10cm.Root
According to GB 5085.3-2007《Hazardous waste judging standard-leaching characteristic identification》Requirement be obtained leachate, measure sludge leaching
Go out in liquid only Zn content to be limited more than standard of landfill, be 313mg/L.According to《Hazardous waste judging standard-corrosivity differentiates》
（GB 5085.1-2007）The pH value for measuring sludge leachate is 7.4.
The stabilisation curing of the electroplating sludge of the present embodiment is comprised the following steps：
1. 100kg Zinc-containing electroplating sludge is fitted into agitator, to flying dust 20kg is put into agitator, stirring makes material
It is well mixed.The flying dust is the fume duct fly ash of domestic waste incineration or the fume duct fly ash of coal-fired boiler in thermal power plant, sheet
The flying dust used in embodiment is the fume duct fly ash of coal-fired boiler in thermal power plant.
2. 8~12kg of calcium hydroxide powder is added in the material after 1. being stirred to step（It is in the present embodiment
10kg）, stir, according to《Hazardous waste judging standard-corrosivity differentiates》（GB 5085.1-2007）Measure sludge leaching
The pH=9.2 of liquid, the material after stirring evenly treats further treatment.
In this step, it is 7~10 to add the last pH that need to ensure sludge leachate of calcium hydroxide powder, if adding for the first time
The pH value of sludge leachate is less than 7 afterwards, then continue to adding calcium hydroxide powder in sludge.
3. 300kg cement and 80kg water are added in the material after 2. being stirred to step, is stirred, obtained pulpous state and mix
Compound.Paste mixture is poured into the cube mold that the length of side is 0.2 meter~1 meter, is compacted under 3~10Mpa of briquetting pressure
Make tight in paste mixture；The building block for solidifying postforming is positioned in cement protecting box, is 17 DEG C~23 DEG C in temperature
（It is 22 DEG C in the present embodiment）, humidity>18~36h is conserved under conditions of 95%, maintenance terminates to be taken out and wind from cement protecting box
It is dry to obtain solidified cement body.
Cement is 2~4: 1 with the mass ratio of Zinc-containing electroplating sludge, is 3: 1 in this implementation.
4. by bisphenol A-type（Trade mark E-44）After the epoxy resin curing agent special with it stirs, step is coated uniformly on
Each surface of the solidified cement body of the rapid dry tack free for 3. obtaining, 48~72 hours（It is 48 hours in the present embodiment）Resin afterwards
Coat completion of cure, completes the stabilisation curing process of electroplating sludge, obtains the stabilisation firming body that can directly fill.
The curing agent is the volume ratio of the aromatic amine curing agent corresponding with epoxy resin, epoxy resin and curing agent
It is 5~7:1（It is 6 in the present embodiment:1）.Epoxy resin and its curing agent Quick uniform mix, and quickly cement is coated in after mixing
On six faces of firming body, the thickness of coat is 2~3mm.In resin curing process, it is ensured that six faces of solidified cement body
It is fully contacted with air.
Random one piece of step stabilisation firming body 4. that takes measures its intensity for 6MPa as detection sample.
According to GB 5086.1-1997《Solid waste-Leaching leaching method inversion method》Powder is carried out to above-mentioned sample
Broken and prepared leachate, measures Zn content for 5mg/L, meets GB 18598-2001《Hazard waste landfill Environmental capacity standard》
It is required that.The present embodiment is good to the stabilisation solidification effect of electroplating sludge, can directly fill.
（Embodiment 2）
The present embodiment treatment is pureed copper-contained electroplating sludge, and moisture content is 67%.According to GB 5085.3-2007《It is dangerous
Waste judging standard-leaching characteristic identification》Requirement leachate is obtained, measure in sludge leachate that only copper content exceedes landfill
Standard is limited, and is 247mg/L.According to《Hazardous waste judging standard-corrosivity differentiates》（GB 5085.1-2007）Measure sludge
The pH value of leachate is 8.8.
Remaining is same as Example 1 for the stabilisation curing of the electroplating sludge of the present embodiment 1, and difference is：
1. middle electroplating sludge and the mass ratio of flying dust are 6: 1 to step.
2. step adds calcium hydroxide powder 6kg.According to《Hazardous waste judging standard-corrosivity differentiates》（GB
5085.1-2007）Measure the pH=9.3 of sludge leachate.
The intensity of the stabilisation firming body that the present embodiment is obtained is 13MPa.
According to GB 5086.1-1997《Solid waste-Leaching leaching method inversion method》Powder is carried out to above-mentioned sample
Broken and prepared leachate, measures copper content for 43mg/L, meets GB 18598-2001《Hazard waste landfill Environmental capacity standard》
It is required that, can directly fill.
（Embodiment 3）
The present embodiment treatment is crystalloid nickel-containing sludge, and moisture content is 61%, and sludge particle diameter is 5mm~10mm.According to
GB 5085.3—2007《Hazardous waste judging standard-leaching characteristic identification》Requirement be obtained leachate, measure sludge leaching
Only nickel content is limited more than standard of landfill in liquid, is 37mg/L.According to《Hazardous waste judging standard-corrosivity differentiates》（GB
5085.1-2007）The pH value for measuring sludge leachate is 8.1.
Remaining is same as Example 1 for the stabilisation curing of the electroplating sludge of the present embodiment 1, and difference is：
1. middle electroplating sludge and the mass ratio of flying dust are 4.5: 1 to step.
2. step adds calcium hydroxide powder 9kg.According to《Hazardous waste judging standard-corrosivity differentiates》（GB
5085.1-2007）Measure the pH=9.6 of sludge leachate.
The intensity of the stabilisation firming body that the present embodiment is obtained is 9MPa.
According to GB 5086.1-1997《Solid waste-Leaching leaching method inversion method》Powder is carried out to above-mentioned sample
Broken and prepared leachate, measures nickel content for 4mg/L, meets GB 18598-2001《Hazard waste landfill Environmental capacity standard》
It is required that, can directly fill.
The inventive method is adapted to the stabilisation solidification of most of electroplating sludges containing heavy metal, and it comes to electroplating sludge
Source, content of beary metal, particle size source are less demanding.
Various embodiments above and application examples are the explanations to specific embodiment of the invention, rather than to limit of the invention
System, person skilled in the relevant technique without departing from the spirit and scope of the present invention, can also make various changes
Change and change and obtain corresponding equivalent technical scheme, thus all equivalent technical schemes should be included into it is of the invention
Scope of patent protection.
Claims (5)
1. the stabilisation curing of a kind of electroplating sludge, it is characterised in that comprise the following steps：
1. pending electroplating sludge is well mixed with flying dust, electroplating sludge is 4~7: 1 with the mass ratio of flying dust；Flying dust
It is the fume duct fly ash or the fume duct fly ash of coal-fired boiler in thermal power plant of domestic waste incineration；
2. calcium hydroxide powder is added in the material after 1. being stirred to step, is stirred；After calcium hydroxide powder is added
The pH of sludge leachate is 7~10；
3. cement and water are added in the material after 2. being stirred to step, is stirred, obtain paste mixture；Pulpous state is mixed
Compound is poured into mould；The building block for solidifying postforming is positioned in cement protecting box and is conserved, maintenance end is taken out and air-dried i.e.
Obtain solidified cement body；
4. after the corresponding curing agent of epoxy resin is stirred, the cement for being coated in the dry tack free that 3. step obtains is consolidated
Change each surface of body, resin coating layer completion of cure after 48~72 hours obtains final electroplating sludge firming body.
2. the stabilisation curing of electroplating sludge according to claim 1, it is characterised in that：Step 3. middle cement with electricity
The mass ratio for plating sludge is 2~4: 1.
3. the stabilisation curing of electroplating sludge according to claim 2, it is characterised in that：Step 3. reclaimed water addition
It is 1: 2~5 with the ratio between cement addition.
4. the stabilisation curing of electroplating sludge according to claim 1, it is characterised in that：Step epoxy 4. used
Resin is bisphenol A type epoxy resin, and curing agent used is the aromatic amine curing agent corresponding with epoxy resin；Epoxy resin with
The consumption volume ratio of curing agent is 5~7:1.
5. the stabilisation curing of electroplating sludge according to claim 4, it is characterised in that：4. epoxy resin is applied step
The thickness of coating is 2~3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207253.0A CN104761113B (en) | 2015-04-28 | 2015-04-28 | Stabilization and solidification method of electroplating sludge |
| CN201710390959.4A CN106986516A (en) | 2015-04-28 | 2015-04-28 | Stabilization and solidification method of electroplating sludge |
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| CN201510207253.0A CN104761113B (en) | 2015-04-28 | 2015-04-28 | Stabilization and solidification method of electroplating sludge |
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| CN201710390959.4A Division CN106986516A (en) | 2015-04-28 | 2015-04-28 | Stabilization and solidification method of electroplating sludge |
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| CN104761113B true CN104761113B (en) | 2017-06-13 |
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| RU2800259C1 (en) * | 2022-08-23 | 2023-07-19 | Николай Павлович Хрипач | Waste neutralization and utilization method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180134A (en) * | 2016-07-08 | 2016-12-07 | 重庆百世星程环境科技有限公司 | The curing of the produced chromium residue of electroplating wastewater technique |
| CN107188391A (en) * | 2017-07-25 | 2017-09-22 | 云南大地绿坤环保科技有限公司 | A kind of method that high concentration dreg containing arsenic stabilizes curing process |
| CN107651892A (en) * | 2017-09-18 | 2018-02-02 | 新中天环保股份有限公司 | A kind of electroplating sludge cement solidification technique |
| CN109520974B (en) * | 2019-01-30 | 2023-10-17 | 河北大学 | Online detection system and detection method for heavy metals in drainage pipeline sludge |
| CN111848113A (en) * | 2020-07-28 | 2020-10-30 | 南京河海环境研究院有限公司 | Method and device for realizing efficient reduction and recycling of dewatered sludge by hydrothermal system |
| CN113213885B (en) * | 2021-05-27 | 2022-10-18 | 中国电建集团中南勘测设计研究院有限公司 | Heavy metal bottom mud curing agent and curing and stabilizing method thereof |
| CN113414221A (en) * | 2021-06-23 | 2021-09-21 | 中国矿业大学 | Double safe digestion method for plastic package after granulation and solidification of hazardous waste micro powder |
| CN114907073A (en) * | 2022-05-27 | 2022-08-16 | 江苏科技大学 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
| WO2024043805A2 (en) * | 2022-08-23 | 2024-02-29 | Николай Павлович ХРИПАЧ | Method for decontaminating and recycling waste |
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| US4478736A (en) * | 1983-01-14 | 1984-10-23 | Monier Resources, Inc. | Composition and process for the treatment of clay slimes |
| CN1187139C (en) * | 2003-05-13 | 2005-02-02 | 上海大学 | Process for treating industrial heavy metal solid slag |
| CN1193834C (en) * | 2003-05-20 | 2005-03-23 | 李康敏 | Method for integrative use of industrial waste residue, stabilizing and solidifying treatment of electroplating mud |
| CN102107204A (en) * | 2009-12-23 | 2011-06-29 | 湖南布鲁斯凯环保科技发展有限公司 | Innocent treatment process for industrial heavy metal waste residue by utilizing treating waste with waste |
| CN104152206B (en) * | 2014-08-26 | 2016-04-06 | 张瑞瑜 | Flying dust, chromium slag, electroplating sludge hazardous waste recycling processing method |
| CN104475431B (en) * | 2015-01-01 | 2017-09-29 | 扬州杰嘉工业固废处置有限公司 | A kind of stabilisation curing of high poison waste residue |
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2015
- 2015-04-28 CN CN201510207253.0A patent/CN104761113B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2800259C1 (en) * | 2022-08-23 | 2023-07-19 | Николай Павлович Хрипач | Waste neutralization and utilization method |
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| CN104761113A (en) | 2015-07-08 |
| CN106986516A (en) | 2017-07-28 |
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