CN106943704A - Organic phosphate heavy metal chelant - Google Patents
Organic phosphate heavy metal chelant Download PDFInfo
- Publication number
- CN106943704A CN106943704A CN201710109593.9A CN201710109593A CN106943704A CN 106943704 A CN106943704 A CN 106943704A CN 201710109593 A CN201710109593 A CN 201710109593A CN 106943704 A CN106943704 A CN 106943704A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- organic phosphate
- metal chelant
- chelating agent
- phosphate heavy
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of organic phosphate heavy metal chelant.The organic phosphate heavy metal chelant includes following composition by weight percentage：Chelating agent main body：90 98%；Sodium tripolyphosphate：2 10%；The chelating agent main body is phosphoric acid salt heavy metal chelant.The organic phosphate heavy metal chelant that the present invention is provided, can reduce Leaching of Heavy Metals concentration, it is ensured that flyash curing sample block meets leaching concentration limit value.
Description
【Technical field】
The present invention relates to metal-chelator technical field, and in particular to a kind of organic phosphate heavy metal chelant.
【Background technology】
Domestic garbage incineration flyash complicated component, major pollutant is the heavy metal with high Leaching, to environment
There is serious harm.Heavy metal is constantly migrated, converted in the environment, contaminated soil and water environment can not by itself
Catharsis, which is realized, to be eliminated, and can not be decomposed by the microorganisms, and can be enriched with by biological chain, therefore flying dust is dealt with improperly and caused
Pollutant Heavy metals therein can produce serious harm into environment to health and natural environment.After testing, it is raw
Contain the heavy metal of higher leaching concentration in incineration of refuse flyash living, such as Pb, Cr, Cd, Cu, Hg and Zn are listed in dangerous useless
Gurry.
At present, the processing method of heavy metal component mainly has three kinds in flying dust, and one kind is to use cement solidification technology counterweight
Metal-cured processing, heavy metal is reacted by the cement of ion exchange, passivation, absorption, chemisorbed, sedimentation and aquation, finally
The compound that hydroxide or complex compound etc. are relatively stablized, but the party are formed on the hydrated silicate colloid C-H-S surfaces of cement
Method has the increase-volume amount of flying dust big, increases the shortcoming of the volume of landfill；Two be melting and solidification method, this method be it is generally acknowledged at present most
For safe and stable flying ash stabilizing/curing technology, flying ash is mainly mixed and made by this method with nature of glass powder
Grain shaping, melts a period of time under 1000~1400 DEG C of high temperature, but this method has the shortcomings that high energy consumption；Three be chemical agent
Stabilization method, chemical agent is by the chemical reaction with heavy metal by its ion transit into low-solubility, the macromolecule of low migration
Complex compound or inorganic mineral, its core are the selection of chelating agent, particularly chemical agent to a main pollution huge sum of money
Belong to the selectivity of ion, and generate the stability of complex compound, the particularly leachability to acid solution；And adopted in correlation technique
Chemical agent stabilization method is used, the chelating agent of use is generally DTC quasi-chelate compounds (dithiocar-bamate abbreviation DTC), belongs to non-
High-molecular compound, unit formula amount contains that complexing center is few, the complex compound generated with heavy metal can leaching concentration it is high.
Therefore, it is necessary to which providing a kind of new technique solves above-mentioned technical problem.
【The content of the invention】
The purpose of the present invention is to overcome above-mentioned technical problem there is provided a kind of Compositional type organic phosphate heavy metal chelant,
Leaching of Heavy Metals concentration can be reduced, it is ensured that flyash curing sample block meets leaching concentration limit value.
The technical scheme is that：
A kind of organic phosphate heavy metal chelant, including following composition by weight percentage：
Chelating agent main body：90-98%；
Sodium tripolyphosphate：2-10%；
The molecular structural formula of the chelating agent main body is shown in formula (I)：
Wherein, the expression alkyl of R1, R2 independently；A represents alkali metal cation.
It is preferred that, the alkyl is methyl, ethyl, propyl group or butyl.
It is preferred that, the alkali metal cation is one kind in sodium ion, copper ion or zinc ion.
It is preferred that, the consumption of the organic phosphate heavy metal chelant is the 1-1.5% of flying dust total amount.
Compared with correlation technique, the organic phosphate heavy metal chelant that provides of the present invention, beneficial effect is：
First, the organic phosphate heavy metal chelant includes containing organic phosphatic chelating agent main body and tripolyphosphate
Sodium, forms Compositional type chelating agent, and the strong complex compound of stability can be produced with the poisonous ion of numerous heavy metals；Through the organic phosphoric acid
Flyash curing thing after the processing of salt heavy metal chelant, can directly be filled or be used in combination as needed using cement hardener,
Flyash curing thing after stabilization is fabricated to non-bearing type building materials.
2nd, the organic phosphate heavy metal chelant is Compositional type chelating agent, few with consumption, low excellent of use cost
Point.
3rd, the complex compound acid-resisting ability of incineration of refuse flyash heavy metal chelant and the heavy metal generation is strong, pH value
When reaching 4, leaching concentration still meets national limitation.
【Embodiment】
Below will the invention will be further described by embodiment.
Embodiment one
A kind of organic phosphate heavy metal chelant, including following composition by weight percentage：
Chelating agent main body：90%；Sodium tripolyphosphate：10%；
The molecular structural formula of the chelating agent main body is shown in formula (I)：
Wherein, the expression alkyl of R1, R2 independently；A represents alkali metal cation.
It is preferred that, the alkyl is methyl, ethyl, propyl group or butyl；The alkali metal cation is sodium ion, copper ion
Or one kind in zinc ion.
The organic phosphate heavy metal chelant is that the sodium tripolyphosphate is dissolved in into shape in the chelating agent main body
Into.
The application method of the organic phosphate heavy metal chelant：Directly with flying dust mixing and stirring, and make
Consumption is the 1% of flying dust total amount.
Embodiment two
A kind of organic phosphate heavy metal chelant, including following composition by weight percentage：
Chelating agent main body：95%；Sodium tripolyphosphate：5%；
The molecular structure of the chelating agent main body is identical with embodiment one, will not be described here.
The application method of the organic phosphate heavy metal chelant：Directly with flying dust mixing and stirring, and make
Consumption is the 1.5% of flying dust total amount.
Embodiment three
A kind of organic phosphate heavy metal chelant, including following composition by weight percentage：
Chelating agent main body：98%；Sodium tripolyphosphate：2%；
The molecular structure of the chelating agent main body is identical with embodiment one, will not be described here.
The application method of the organic phosphate heavy metal chelant：Directly with flying dust mixing and stirring, and make
Consumption is the 1.3% of flying dust total amount.
Example IV
A kind of organic phosphate heavy metal chelant, including following composition by weight percentage：
Chelating agent main body：96%；Sodium tripolyphosphate：4%；
The molecular structure of the chelating agent main body is identical with embodiment one, will not be described here.
The application method of the organic phosphate heavy metal chelant：Directly with flying dust mixing and stirring, and make
Consumption is the 1.2% of flying dust total amount.
The organic phosphate heavy metal chelant of embodiment one is used to handle incineration of refuse flyash, and carry out heavy metal from
Son leaches detection, and heavy metal ion leaching method is used《Consumer waste filling and embedding Environmental capacity standard》(GB16889-2008) advised in
Fixed HJ/T 300-2007 leach program (solid waste Leaching leaching method, acetate buffer solution method), and testing result is such as
Under：
The content of heavy metal and leaching concentration detection data in flying dust
Wherein, ND represents not detect.The chelating agent provided using the present invention is can be seen that by above-mentioned detection data to handle
Content of beary metal is less than standard of landfill value in flying dust afterwards, available for directly landfill.
Compared with correlation technique, the organic phosphate heavy metal chelant that provides of the present invention, beneficial effect is：
First, the organic phosphate heavy metal chelant includes containing organic phosphatic chelating agent main body and tripolyphosphate
Sodium, forms Compositional type chelating agent, and the strong complex compound of stability can be produced with the poisonous ion of numerous heavy metals；Through the organic phosphoric acid
Flyash curing thing after the processing of salt heavy metal chelant, can directly be filled or be used in combination as needed using cement hardener,
Flyash curing thing after stabilization is fabricated to non-bearing type building materials.
2nd, the organic phosphate heavy metal chelant is Compositional type chelating agent, few with consumption, low excellent of use cost
Point.
3rd, the complex compound acid-resisting ability of incineration of refuse flyash heavy metal chelant and the heavy metal generation is strong, pH value
When reaching 4, leaching concentration still meets national limitation.
Above-described is only embodiments of the present invention, it should be noted here that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to the protection model of the present invention
Enclose.
Claims (4)
1. a kind of organic phosphate heavy metal chelant, it is characterised in that including following composition by weight percentage：
Chelating agent main body：90-98%；
Sodium tripolyphosphate：2-10%；
The molecular structural formula of the chelating agent main body is shown in formula (I)：
Wherein, the expression alkyl of R1, R2 independently；A represents alkali metal cation.
2. organic phosphate heavy metal chelant according to claim 1, it is characterised in that the alkyl is methyl, second
Base, propyl group or butyl.
3. organic phosphate heavy metal chelant according to claim 2, it is characterised in that the alkali metal cation is
One kind in sodium ion, copper ion or zinc ion.
4. organic phosphate heavy metal chelant according to any one of claim 1 to 3, it is characterised in that described to have
The consumption of machine phosphate heavy metal chelant is the 1-1.5% of flying dust total amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109593.9A CN106943704A (en) | 2017-02-27 | 2017-02-27 | Organic phosphate heavy metal chelant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710109593.9A CN106943704A (en) | 2017-02-27 | 2017-02-27 | Organic phosphate heavy metal chelant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106943704A true CN106943704A (en) | 2017-07-14 |
Family
ID=59467524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710109593.9A Pending CN106943704A (en) | 2017-02-27 | 2017-02-27 | Organic phosphate heavy metal chelant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106943704A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534354A (en) * | 1976-06-30 | 1978-01-14 | Agency Of Ind Science & Technol | Process for removing micro-heavy metals in waste of refuse incinerator |
| DE20204666U1 (en) * | 2002-03-23 | 2002-07-11 | Haas Rainer | Materials for water treatment containing organic phosphorus compounds as active ingredients |
| US6444183B1 (en) * | 1997-09-30 | 2002-09-03 | Rhodia Chimie | Agent for eliminating heavy metals comprising a phosphate compound |
| CN101176815A (en) * | 2007-11-15 | 2008-05-14 | 河海大学 | Method for stabilization processing refuse incineration flying ash |
| CN102730812A (en) * | 2012-07-26 | 2012-10-17 | 长沙矿冶研究院有限责任公司 | Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound |
| CN102974068A (en) * | 2012-11-22 | 2013-03-20 | 深圳市能源环保有限公司 | Waste incineration fly ash treatment agent |
| CN104292361A (en) * | 2014-09-27 | 2015-01-21 | 山东黄河三角洲纺织科技研究院有限公司 | Method for recycling sodium alginate from reactive dye printing wastewater by virtue of calcium coagulation-chelating agent process |
-
2017
- 2017-02-27 CN CN201710109593.9A patent/CN106943704A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534354A (en) * | 1976-06-30 | 1978-01-14 | Agency Of Ind Science & Technol | Process for removing micro-heavy metals in waste of refuse incinerator |
| US6444183B1 (en) * | 1997-09-30 | 2002-09-03 | Rhodia Chimie | Agent for eliminating heavy metals comprising a phosphate compound |
| DE20204666U1 (en) * | 2002-03-23 | 2002-07-11 | Haas Rainer | Materials for water treatment containing organic phosphorus compounds as active ingredients |
| CN101176815A (en) * | 2007-11-15 | 2008-05-14 | 河海大学 | Method for stabilization processing refuse incineration flying ash |
| CN102730812A (en) * | 2012-07-26 | 2012-10-17 | 长沙矿冶研究院有限责任公司 | Pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of pharmaceutical compound |
| CN102974068A (en) * | 2012-11-22 | 2013-03-20 | 深圳市能源环保有限公司 | Waste incineration fly ash treatment agent |
| CN104292361A (en) * | 2014-09-27 | 2015-01-21 | 山东黄河三角洲纺织科技研究院有限公司 | Method for recycling sodium alginate from reactive dye printing wastewater by virtue of calcium coagulation-chelating agent process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106955451A (en) | Incineration of refuse flyash heavy metal chelant and preparation method thereof | |
| CN104312591B (en) | Stabilisation curing agent and administering method that heavy-metal contaminated soil or solid waste are administered | |
| Riley et al. | Materials and processes for the effective capture and immobilization of radioiodine: A review | |
| CN105238409B (en) | The linkage stabilizer and restorative procedure of restoration of soil polluted by heavy metal | |
| CN109731901B (en) | Stabilizing and repairing agent and repairing method for fluoride-contaminated soil | |
| CN102732259A (en) | Heavy metal polluted crystallization encapsulated stabilizing agent and its application method | |
| CN102218428A (en) | Treatment method of arsenic slag | |
| CN101708499B (en) | Method for jointly stabilizing fly ash and arsenic-containing waste | |
| CN108059958A (en) | A kind of antimony pollution place soil stabilization renovation agent and preparation method thereof | |
| CN100506405C (en) | Chemical process of stabilizing fly ash from incinerating city garbage | |
| CN104974762A (en) | Preparation of curing stabilizing agent for treating heavy metal-polluted soil and use method thereof | |
| CN105772483A (en) | Incineration fly ash synchronous solidification/stabilization method based on geo-polymerization | |
| CN104774619B (en) | It is a kind of for the solidification stabilizer of As polluted soil and its application | |
| CN104927871A (en) | Heavy metal stabilizer and method for stabilizing soil heavy metal through same | |
| Pierce et al. | Review of Potential Candidate Stabilization Technologies for Liquid and Solid Secondary Waste Streams | |
| CN105963902A (en) | Method for innocent treatment of arsenic sulfide residues | |
| Kamorny et al. | Modification of the cement matrix with organic additives for stabilizing pertechnetate ions | |
| CN106831514A (en) | The preparation method and heavy metal chelant of heavy metal chelant | |
| Jantzen | Characterization and performance of fluidized bed steam reforming (FBSR) product as a final waste form | |
| CN106943704A (en) | Organic phosphate heavy metal chelant | |
| CN102517028B (en) | Curing agent for in situ restoration of polychloroalkane compound polluted soil | |
| CN104230130A (en) | Sludge treatment method for heavy metal stabilization | |
| CN111056759A (en) | Core-shell structure ceramsite coating layer additive and application thereof | |
| CN106180134A (en) | The curing of the produced chromium residue of electroplating wastewater technique | |
| CN102580979A (en) | Solidification/stabilization method for mercury-containing hazardous waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170714 |