CN1244414C - Treating method for city life garbage burning flyash - Google Patents
Treating method for city life garbage burning flyash Download PDFInfo
- Publication number
- CN1244414C CN1244414C CN 200410054315 CN200410054315A CN1244414C CN 1244414 C CN1244414 C CN 1244414C CN 200410054315 CN200410054315 CN 200410054315 CN 200410054315 A CN200410054315 A CN 200410054315A CN 1244414 C CN1244414 C CN 1244414C
- Authority
- CN
- China
- Prior art keywords
- fly ash
- flying dust
- anion surfactant
- domestic garbage
- minutes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a method for treating burnt fly ash of urban domestic garbage, which belongs to the technical fields of environmental protection and the chemical technology of powder surface modification. The method for treating burnt fly ash of urban domestic garbage of the present invention adopts an anion surface active agent which has a chelating function and a long carbon chain structure with more than 8 carbon atoms. The modification technology for the fly ash by a wet method comprises the following steps: a certain amount of fly ash is firstly weighed, is added to a water solution, is put into a stirrer to be heated in a water bath for increasing the temperature to be 25 DEG C to 80 DEG C, and is stirred for 10 minutes; then, 2 to 5% of chelating type anion surface active agent with the main component of C12H25OPO3K2; the mixture is continuously stirred for 15 minutes to 25 minutes at certain temperature and rotary speed, solid and liquid are separated, the modified fly ash is dried for 24 hours at the temperature of 105 DEG C, and the fly ash is sieved and hermetically stored.
Description
Technical field
The present invention relates to the processing method of fly ash from burning city domestic garbage, belong to environmental protection and powder surface modification chemical process technology field.
Background technology
Dangerous Hazardous Waste Management is a part of global environment problem, also is an outstanding problem of China environmental protection, and city garbage burning is the important means that domestic waste is disposed, and burning process will produce a large amount of flying dusts.Contain heavy metals such as many harmful lead, cadmium, zinc in the incineration of refuse flyash, the more important thing is, flying ash enrichment simultaneously has toxic components such as carcinogenesis De bioxin and furans to human body, domestic and international existing environmental legislation classifies as hazardous waste with it, emphasizes to give safe disposal.
Shanghai disposition of solid waste planning according to the Shanghai City government permission, by 2010, Shanghai will form the development pattern of inner city house refuse based on burning disposal, at present, the 600000 tons of waste incinerations in Shanghai will produce nearly 20,000 tons of MSW flying dusts every year, and Shanghai flying ash generation will reach 7 ~ 80,000 tons/year in 2010.
At present Shanghai adopts the security landfill method to dispose flying dust, and not only the landfill disposal costs is very high, and the method for security landfill has simultaneously taken a large amount of land resource, and obviously, this and existing Shanghai land resource, financial resource are conflicting.Simultaneously the security landfill method with the viewpoint of recycling economy and energy sustainable development deviate from mutually.
On the other hand, the surge of the total output of China's plastic products surpasses 1,500 ten thousand tons, wherein is used for filling-modified inorganic non-metallic mineral powder material, and year consumption figure is above 2,000,000 tons.If the flying dust after the modification is made the filler of high molecular polymer.Not only can reduce the production cost of plastic products, and have great environmental protection meaning.
In general, the filler that plastics are made in the flying dust modification is one of method of present safe handling and recycling the best, and the flying dust recycling mainly concentrates on the following aspects both at home and abroad: in Japan, flying dust and end slag mix to be made as eco-cement (1); (2) U.S. and other American-European developed countries make the alternative aggregate of cement concrete and pitch with mixed ash; (3) fusing fly ash is made the raw material of devitrified glass.But the processing of these resources fails to solve actual engineering problem: it is troubling all the time that the heavy metal ion after (1) resource in the flying dust leaches problem; (2) flying dust resource cost is too high, is not suitable for producing in batches; (3) added value of flying dust resource product is low.
Summary of the invention
The objective of the invention is to utilize city garbage burning flying ash, the modification by surfactant is handled, and forms the nonmetallic mineral filler, for the resource of flying dust provides a brand-new outlet.
The objective of the invention is by the following technical programs to reach with measure.
The processing method of a kind of fly ash from burning city domestic garbage of the present invention is characterized in that adopting anion surfactant, specifically adopts to have anion surfactant chelating function, that have long carbon-chain structure more than 8; The modified technique step of flying dust is as follows: take by weighing a certain amount of flying dust earlier, sieve through Taylor standard sieve, flying dust is added in the aqueous solution, making the ratio of mud is 2-20: 1 suspended emulsion, put into mixer then, the water-bath heat temperature raising is to 25-80 ℃, and stirs 10 minutes; The described chelating type anion surfactant that adds the 2-5% of flying dust weight then is mainly laurate list potassium phosphate C
12H
25OPO
3K
2Under temperature-resistant situation, rotating speed remains on 1000RPM to be continued down to stir 15-25 minute, and fly ash granule and laurate list potassium phosphate are fully reacted then; Separation of Solid and Liquid is dried the flying dust after the modification 24 hours down at 105 ℃ then, sieves and seal preservation at last.
Chelating type anion surfactant of the present invention has multiple, and all anion surfactants that has chelating function and have 8 long carbon-chain structures of above carbon atom can use, and processing step can carry out by the same manner.This kind anion surfactant can be glyceryl stearate citrate; N-lauroyl ethylenediamine triacetic acid or its esters; The stearic amido of 1--1-methyl-prop sodium phosphate.
Used specific chelating type anion surfactant in the inventive method, flying dust after the modification, its surface coverage one deck anion surfactant, formed the connection bridge between flying dust and plastics or the rubber, and be filled in the high molecular polymer, the heavy metal ion in the flying dust is had stronger solidification; In addition, the flying dust after the modification shows as strong hydrophobicity, and its hydrophily of unmodified flying dust is very strong.
Because the heavy metal ion in the fly ash granule and have between the chelating type anion surfactant chelatropic reaction has taken place has formed chelate, is absorbed by fly ash granule, thereby has reduced the leaching rate of heavy metal ion in the flying dust; In addition since the fly ash granule surface graft one deck anion surfactant, and contain long carbochain hydrophobic grouping more than 8 carbon atoms in this surfactant structure, make fly ash granule obtain activation.Its activation rate of flying dust after the modification meets the requirement as the macromolecule polymer material filler fully up to more than 95%.
Fly ash from burning city domestic garbage contains calcium element silicon composition, and the composition of its mineral composition and wollastonite is similar, and present mainly being used in after Wollastonite modified made filler in plastics/rubber.Can be used for the substituted for silicon lime stone after the flying dust modification makes the filler of plastics/rubber.Can effectively handle a large amount of fly ash from burning city domestic garbage like this, help environmental protection and save limited land resources.Flying dust replaces wollastonite simultaneously, can solve domestic mineral filler problem of shortage.
Specific implementation method
After now embodiments of the invention being described in.
Embodiment one: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 0.5 liter aqueous solution, make the ratio of mud and be 5: 1 suspension, put into mixer then and stir.Warming-in-water to 45 ℃, and stirred 10 minutes, add chelating type anion surfactant laruyl alcohol phosplate sylvite then, it has the structure of 12 carbon atom long-chains and chelating agent phosphoric acid, its addition is 5.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 15 minutes, and fly ash granule and laruyl alcohol phosplate sylvite are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment two: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 1 liter aqueous solution, make the ratio of mud and be 10: 1 suspension, put into mixer then and stir.Warming-in-water to 75 ℃, and stirred 10 minutes, add chelating type anion surfactant glyceryl stearate citrate then, it has the structure of 18 carbon atom long-chains and chelating agent citric acid, its addition is 3.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 25 minutes, and fly ash granule and glyceryl stearate citrate are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment three: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 2 liter aqueous solution, make the ratio of mud and be 20: 1 suspension, put into mixer then and stir.Warming-in-water to 30 ℃, and stirred 10 minutes, add chelating type anion surfactant N-lauroyl ethylenediamine triacetic acid then, it has the structure of 12 carbon atom long-chains and chelating agent EDTA, its addition is 2.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 20 minutes, and fly ash granule and N-lauroyl ethylenediamine triacetic acid are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment four: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 1 liter aqueous solution, make the ratio of mud and be 10: 1 suspension, put into mixer then and stir.Warming-in-water to 50 ℃, and stirred 10 minutes, add the stearic amido of chelating type anion surfactant 1--1-methyl-prop sodium phosphate then, it has 18 carbon atom long-chains and the phosphatic structure of chelating agent, its addition is 2.5 grams, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 25 minutes, and the stearic amido of fly ash granule and 1--1-methyl-prop sodium phosphate is fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Test by each sample of the foregoing description, learn that its activation rate of flying dust after the modification can be up to more than 95%, infrared spectrum characteristic peak contrast to modification flying dust and original flying dust, occurred new characteristic absorption peak in the modification flying dust, proved that the fly ash granule surface is coated with a certain amount of anion surfactant.Through the TCLP method test that EPA formulates, the leaching solubility of the Pb2+ in the flying dust, Zn2+ and Cd2+ heavy metal ion is all far below national standard.
The present invention compares with other nonmetallic mineral modifications:
Compare with other nonmetallic mineral fillers, the particle diameter of flying dust is evenly distributed, and 95wt% is below 200 μ m, and the flying dust source is wide, and cost is low; Flying dust activation rate height after the modification, the scope of acid and alkali-resistance is wide.
The present invention compares with other flying dust method of resource:
The cost that the flying dust modification is handled is low, the value-added content of product height.After the test of the TCLP of EPA method, Pb in the flying dust
2+, Zn
2+And Cd
2+The leaching solubility of (because funds are limited, the present invention only measures the leaching solubility of above-mentioned 3 heavy metal species ions) is all far below national standard.
Claims (4)
1. the processing method of a fly ash from burning city domestic garbage is characterized in that adopting anion surfactant, specifically adopts to have anion surfactant chelating function, that have long carbon-chain structure more than 8; The modified technique step of flying dust is as follows: take by weighing a certain amount of flying dust earlier, sieve through Taylor standard sieve, flying dust is added in the aqueous solution, making the ratio of mud is 2-20: 1 suspended emulsion, put into mixer then, the water-bath heat temperature raising is to 25-80 ℃, and stirs 10 minutes; The described chelating type anion surfactant that adds the 2-5% of flying dust weight then is mainly laurate list potassium phosphate C
12H
25OPO
3K
2Under temperature-resistant situation, rotating speed remains on 1000RPM to be continued down to stir 15-25 minute, and fly ash granule and laurate list potassium phosphate are fully reacted then; Separation of Solid and Liquid is dried the flying dust after the modification 24 hours down at 105 ℃ then, sieves and seal preservation at last.
2. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt glyceryl stearate citrate.
3. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt N-lauroyl ethylenediamine triacetic acid or its esters.
4. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt the stearic amido of 1--1-methyl-prop sodium phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054315 CN1244414C (en) | 2004-09-07 | 2004-09-07 | Treating method for city life garbage burning flyash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054315 CN1244414C (en) | 2004-09-07 | 2004-09-07 | Treating method for city life garbage burning flyash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1586743A CN1586743A (en) | 2005-03-02 |
| CN1244414C true CN1244414C (en) | 2006-03-08 |
Family
ID=34603101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410054315 Expired - Fee Related CN1244414C (en) | 2004-09-07 | 2004-09-07 | Treating method for city life garbage burning flyash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1244414C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428290B (en) * | 2008-11-19 | 2010-06-02 | 沈恩善 | Method for treating garbage burning flying ash |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011111057A1 (en) * | 2010-03-12 | 2011-09-15 | Council Of Scientific & Industrial Research | Process for the surface-modification of flyash and industrial applications thereof |
| CN102161490B (en) * | 2011-01-28 | 2012-11-21 | 北京市琉璃河水泥有限公司 | System and method for extracting potassium sodium salt from garbage incineration fly ash |
| CN102303036B (en) * | 2011-07-06 | 2014-01-15 | 东江环保股份有限公司 | Alkali activated solidification and stabilization treatment method of refuse incineration fly ash |
| CN103512930A (en) * | 2012-06-18 | 2014-01-15 | 栗田工業株式会社 | Method for determining adding amount of organic chelate heavy metal fixing agent |
| CN104371178A (en) * | 2014-11-24 | 2015-02-25 | 扬州大学 | Method for preparing high polymer composite material by taking garbage power generation flying ash as raw material |
| CN105498146A (en) * | 2015-12-25 | 2016-04-20 | 重庆科技学院 | Incineration fly ash bi-component heavy metal stabilizer and fly ash treatment method applying same |
| CN107286429B (en) * | 2017-07-13 | 2019-07-23 | 浙江工业大学温州科学技术研究院 | A kind of method and products thereof of incineration of refuse flyash recycling |
| CN108611147B (en) * | 2018-05-22 | 2020-07-14 | 新奥科技发展有限公司 | Formed coke and preparation method thereof |
| CN109622560A (en) * | 2018-12-04 | 2019-04-16 | 合肥全晟环保科技有限公司 | The processing method of incineration of refuse flyash |
| CN109848188B (en) * | 2019-03-28 | 2020-12-29 | 北京科技大学 | Method for pretreating household garbage incineration fly ash by kitchen garbage lactic acid fermentation liquor |
| CN112044923B (en) * | 2020-08-03 | 2021-10-08 | 宋丽 | Garbage combustion fly ash solidification method |
| CN112122309B (en) * | 2020-09-09 | 2021-08-17 | 杭州灰弘环保科技有限公司 | Novel method for detoxifying municipal solid waste incineration fly ash by using dioxin |
-
2004
- 2004-09-07 CN CN 200410054315 patent/CN1244414C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428290B (en) * | 2008-11-19 | 2010-06-02 | 沈恩善 | Method for treating garbage burning flying ash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1586743A (en) | 2005-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1244414C (en) | Treating method for city life garbage burning flyash | |
| US20060189837A1 (en) | Method for heavy metal stabilization and cementious agglomeration of flyash and scrubber residues | |
| CN108409176B (en) | Household garbage incineration fly ash ground polymer and preparation method thereof | |
| US9744393B1 (en) | Method of removing toxins from fly ash | |
| CN101690934B (en) | Method for stabilizing fly ash from refuse incineration by combination of complementary type medicaments | |
| CN102218428A (en) | Treatment method of arsenic slag | |
| CN101279825B (en) | Method for cooperative reclaiming flyash and sludge in refuse incineration | |
| CN107537129A (en) | A kind of heavy metal stabilizer and its application method for administering incineration of refuse flyash | |
| US20050209496A1 (en) | Method for microstabilization of heavy metal bearing materials and wastes | |
| CN100506405C (en) | Chemical process of stabilizing fly ash from incinerating city garbage | |
| CN105170638A (en) | Green multi-metal cooperation stabilization agent for fly ash and application method for green multi-metal cooperation stabilization agent | |
| US20070225541A1 (en) | Method for stabilization of heavy metals and odor control with dicalcium phosphate dihydrate powder | |
| CN105903746B (en) | Utilize the method for rice hull ash stabilization processing refuse incineration flying ash | |
| CN110639935A (en) | Waste incineration fly ash treatment method | |
| CN1244415C (en) | Treating method for city life garbage burning flyash | |
| Liang et al. | The Resource Utilization and Environmental Assessment of MSWI Fly Ash with Solidification and Stabilization: A Review | |
| CN114031250B (en) | Method for hydrothermal treatment of domestic sludge by using zero-valent iron and fly ash | |
| CN110511760A (en) | The method for reducing the complex repairation agent of heavy metal in soil leaching concentration and carrying out soil remediation with the renovation agent | |
| CN114130785B (en) | Fly ash treatment method of garbage incinerator | |
| CN109482611A (en) | The non-pollution processing method of the slugging containing pozzuolite | |
| CN114632283A (en) | Efficient fly ash chelating agent and preparation method thereof | |
| CN107050734A (en) | A kind of incineration of refuse flyash curing agent | |
| CN112676335A (en) | Large-particle desorbent for treating cadmium-polluted soil and preparation and application methods thereof | |
| CN111359136A (en) | Dioxin detoxification chelating agent for fly ash and preparation method thereof | |
| Zhu et al. | Carbon dioxide use in beneficiation of landfilled coal ash for hazardous waste immobilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |