CN101642612A - Stable heavy metal chelating agent and use method thereof - Google Patents
Stable heavy metal chelating agent and use method thereof Download PDFInfo
- Publication number
- CN101642612A CN101642612A CN200910194418A CN200910194418A CN101642612A CN 101642612 A CN101642612 A CN 101642612A CN 200910194418 A CN200910194418 A CN 200910194418A CN 200910194418 A CN200910194418 A CN 200910194418A CN 101642612 A CN101642612 A CN 101642612A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- chelating agent
- water
- stabilizing
- treated
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a stable heavy metal chelating agent and an use method thereof. The effective ingredient of the stable heavy metal chelating agent is annular polyamine compound containing piperazin or aminoethylpiperazin. A small amount of heavy metal chelating agent can be added in substances to be treated and mixed evenly to form complex of heavy metal with stable chemical property andcan be used to treat waste material or waste liquor with heavy metal, in particular to powdery or adhesive substances with heavy metal such as incineration fly ash, slag, soil, sludge and the like, thus realizing stabilization of heavy metal and reducing the heavy metal release. Compared with other stabilization methods of heavy metal, the heavy metal chelating agent is characterized by less additive amount, no harmful gas product, high degree of stabilization and the like, has stronger practicability and is applicable to substances with heavy metal such as incineration fly ash, slag, soil, sludge and the like.
Description
Technical field
The invention belongs to hazardous waste and handle the disposal field, relate to chelating agent and using method thereof that a kind of processing contains the hazardous waste of heavy metal, make heavy metal stabilization, reduce the heavy metal stripping quantity.
Background technology
Industrial waste and waste water, incineration of refuse flyash, slag, mud, contaminated soil etc., contain harmful heavy metal such as mercury, cadmium, lead, chromium, arsenic, selenium etc., as direct discharging or landfill, can pollute surrounding enviroment, particularly lead, cadmium and mercury can be along with the precipitation strippings, polluted surface water and underground water.At present, a kind of mode is to adopt cement solidification to handle the hazardous waste that contains heavy metal, then at the garbage disposal plant landfill.Though cement solidification is simple and easy to do and expense is cheap, there is the heavy metal stripping again of cement solidification thing, cause the danger of secondary pollution.In addition, cement self also can solidify, and is puddling fouling on equipment and the conveying equipment, needs more time cleaning equipment.
When another kind of mode is to use the heavy metal stabilization chemicals treatment to contain the hazardous waste of heavy metal, owing to contain the refuse or the waste liquid of heavy metal, the nature difference of perhaps contaminated by heavy metals flying ash, slag, mud, soil is bigger, need significantly increase the medicament use amount, and need be used with other materials such as pH conditioning agents such as frerrous chloride or cement.In addition, as the amino serial medicament of vulcanized sodium and sulphur, when contact, or mixes with the pH regulator solution and to stir or when heating, can decompose generation H with some flying ash or mud
2S, CS
2Etc. harmful gas.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned heavy metal stabilization method, the chelating agent and the using method thereof of the hazardous waste that a kind of processing contains heavy metal is provided, make heavy metal stabilization, reduce the heavy metal stripping quantity.This heavy metal chelant can be used for the processing of liquid and solid waste, and addition is few, in use can not produce pernicious gas, has good practicability.
The present invention proposes the chelating agent that a kind of processing contains the heavy metal hazardous waste, makes heavy metal stabilization, reduces the heavy metal stripping quantity, and its active ingredient is the cyclic polyamines compounds.This cyclic polyamines compounds is piperazidine or amino-ethyl piperazidine, and structural formula is as follows:
Piperazidine amino-ethyl piperazidine
Again, the present invention proposes a kind of using method of chelating agent of stabilizing heavy metal, with the effective ingredient of one or more above-mentioned compounds as chelating agent, handles the object being treated that contains heavy metal, makes heavy metal stabilization, to reduce the stripping quantity of heavy metal.
Further, described object being treated is refuse or the waste liquid that contains heavy metal, or one or more materials of contaminated by heavy metals Powdered or thick flying ash, slag, soil, mud.
Further, when object being treated is waste liquid, in waste liquid, add an amount of heavy metal chelant and stirring; When object being treated was solids such as flying ash, water was diluted to debita spissitudo with heavy metal chelant, was added in the refuse and mixed.
Further, described heavy metal chelant dilution water is one or more of running water or river or underground water or water for industrial use or middle water or ion exchange water or distilled water.
Further, heavy metal chelant adds in the hazardous waste that contains heavy metal, mixes in the process of stirring, and heavy metal chelant and heavy metal generation complex reaction generate complex compound.
Further, described heavy metal chelant is not subjected to Temperature Influence when mixing stirring with object being treated, and chemical property is stable, can not produce pernicious gas.
Further, the weight of the heavy metal chelant of adding accounts for 0.01%～10% of object being treated weight.
Further, when handling flying ash, the weight of the heavy metal stabilizer of adding accounts for flying ash weight, preferably between 0.1%～5%.
Stabilisation thing after method of the present invention is carried out stabilization processes, direct landfill, or use curing agent such as cement as required, with the brickmaking of stabilisation thing as the non-bearing building materials.
Object being treated is if contain the waste liquid of heavy metal, and by adding the heavy metal stabilizer among the present invention and stirring, the heavy metal in the waste liquid is captured and generates the stable complex compound of chemical property, and the temperature and time during to stirring has no particular limits.
The present invention can handle the heavy metal in solid powdery, muddy or aqueous flying ash, slag, soil, mud, industrial wastewater etc., heavy metal can be in the heavy metals such as lead, mercury, cadmium, chromium, zinc, arsenic any one or a few.
Heavy metal chelant of the present invention is the polymer chemistry medicine, and macromolecule can be brought into play the complexing effect to greatest extent.Particularly to the treatment effect the best of the heavy metal in the flying ash, in the stabilization processes process of flying ash and after handling, can not produce any pernicious gas or secondary pollution material, treatment effect is temperature influence hardly, and has long-term security and stability.When object being treated is waste water, can adopt directly to add or add the mode that stir the back, time and the temperature that stirs there are not special requirement.When object being treated is solid such as flying dust, adds again after needing to add an amount of water dilution, and mixing stirring.The dilution water of heavy metal chelant of the present invention can be running water, river, underground water, water for industrial use, Zhong Shui, ion exchange water, distilled water etc.No matter use which kind of water, do not influence treatment effect; The stabilisation thing of handling the back generation has good resistance to acids and bases, heat-resisting quantity; Heavy metal chelant of the present invention can be handled flying ash jointly with cement, and the stabilization effect of this heavy metal stabilizer is not affected.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention utilizes heavy metal chelant to handle the hazardous waste that contains heavy metal, by generating heavy metal complex, makes heavy metal stabilization, reduces the heavy metal stripping quantity.Compare with other heavy metal stabilization method, this heavy metal chelant addition is few, in use can not produce pernicious gas, has good practicability, is specially adapted to the heavy metal stabilization of flying ash, slag, soil, mud etc.
The specific embodiment
Below handling flying ash with method provided by the invention is embodiment, handles flying ash as a comparative example with vulcanized sodium, and specific operation process of the present invention and treatment effect are described.
[embodiment 1]
1. to agitating device is housed, in the good 4 mouthfuls of flasks of air-tightness, add flying ash 10g, stir;
When 2. temperature is raised to 80 ℃ in the flask, add piperazidine (or amino-ethyl piperazidine) 1.5g;
3. the inlet from flask one side is blown into dry air, and flow 200ml/min gathers emergent gas from the outlet of flask opposite side, and acquisition time 15min, collection capacity are 3L;
4. measure the carbon disulfide (CS that gathers gas with the direct-reading detector
2), hydrogen sulfide (H
2S) concentration.
[comparative example 1]
1. to agitating device is housed, in the good 4 mouthfuls of flasks of air-tightness, add flying ash 10g, stir;
When 2. temperature is raised to 80 ℃ in the flask, add vulcanized sodium 1.5g;
3. the inlet from flask one side is blown into dry air, and flow 200ml/min gathers emergent gas from the outlet of flask opposite side, and acquisition time 15min, collection capacity are 3L;
4. measure the carbon disulfide (CS that gathers gas with the direct-reading detector
2), hydrogen sulfide (H
2S) concentration.
Experimental result sees Table 1.
Produce gas test in the table 1 flying ash stabilizing process
[embodiment 2]
1. take by weighing flying ash 100g, place beaker;
2. add water, piperazidine (or amino-ethyl piperazidine) stirred 10 minutes;
3. adopt the hac buffer method to leach and measure the leaching concentration of heavy metal lead.
[comparative example 2]
1. take by weighing flying ash 100g, place beaker;
2. add water, vulcanized sodium stirred 10 minutes;
3. adopt the hac buffer method to leach and measure the leaching concentration of heavy metal lead.
Experimental result sees Table 2.
The test of table 2 incinerating flyash, heavy metal stabilization effect
By above-mentioned experiment as can be known, under the identical situation of experiment condition, compare with using vulcanized sodium, the pernicious gas that produces during the piperazidine stabilizing heavy metal is few, and is strong to the complexing of heavy metal, and the heavy metal of generation is difficult for stripping.
Claims (9)
1. the chelating agent of a stabilizing heavy metal is characterized in that, the active ingredient of described heavy metal chelant is the cyclic polyamines compounds.
2. the chelating agent of stabilizing heavy metal according to claim 1 is characterized in that, described cyclic polyamines compounds is piperazidine or amino-ethyl piperazidine.
3. the using method of the chelating agent of a stabilizing heavy metal, it is characterized in that,, handle the object being treated that contains heavy metal with claim 1 or 2 described one or more compounds effective ingredient as chelating agent, make heavy metal stabilization, to reduce the stripping quantity of heavy metal.
4. the using method of the chelating agent of stabilizing heavy metal according to claim 3, it is characterized in that, described object being treated is refuse or the waste liquid that contains heavy metal, or one or more of contaminated by heavy metals Powdered or thick flying ash, slag, soil, mud.
5. the using method of the chelating agent of stabilizing heavy metal according to claim 4 is characterized in that, when object being treated is waste liquid, adds an amount of heavy metal chelant and stirring in waste liquid; When object being treated was solids such as flying ash, water was diluted to debita spissitudo with heavy metal chelant, was added in the refuse and mixed.
6. the using method of the chelating agent of stabilizing heavy metal according to claim 5 is characterized in that, the interpolation weight of described heavy metal chelant accounts for 0.01%～10% of object being treated weight.
7. the using method of the chelating agent of stabilizing heavy metal according to claim 6 is characterized in that, the interpolation weight of described heavy metal chelant accounts for 0.1%～5% of processed flying ash weight.
8. the using method of the chelating agent of stabilizing heavy metal according to claim 4, it is characterized in that the water that described dilution heavy metal chelant is used is one or more of running water, river, underground water, water for industrial use, Zhong Shui, ion exchange water, distilled water.
9. according to chelating agent or its using method of 1～8 any described stabilizing heavy metal of claim, it is characterized in that, described heavy metal be in the heavy metals such as lead, mercury, cadmium, chromium, zinc, arsenic any one or multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194418A CN101642612A (en) | 2009-08-21 | 2009-08-21 | Stable heavy metal chelating agent and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910194418A CN101642612A (en) | 2009-08-21 | 2009-08-21 | Stable heavy metal chelating agent and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101642612A true CN101642612A (en) | 2010-02-10 |
Family
ID=41654770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910194418A Pending CN101642612A (en) | 2009-08-21 | 2009-08-21 | Stable heavy metal chelating agent and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101642612A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631761A (en) * | 2012-04-10 | 2012-08-15 | 重庆工商大学 | Application of using N-benzoyl-N-phenylhydroxylamine as stabilizing agent in domestic waste incineration fly ash treatment |
| CN103242853A (en) * | 2013-05-10 | 2013-08-14 | 黑龙江省科学院自然与生态研究所 | Heavy metal chelating agent and preparation method thereof |
| CN106000353A (en) * | 2016-06-06 | 2016-10-12 | 无锡伊佩克科技有限公司 | Soil heavy metal adsorbent and preparation method thereof |
| CN112296061A (en) * | 2019-07-30 | 2021-02-02 | 王均 | Harmless treatment method for slag and application of treated slag |
-
2009
- 2009-08-21 CN CN200910194418A patent/CN101642612A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631761A (en) * | 2012-04-10 | 2012-08-15 | 重庆工商大学 | Application of using N-benzoyl-N-phenylhydroxylamine as stabilizing agent in domestic waste incineration fly ash treatment |
| CN102631761B (en) * | 2012-04-10 | 2014-12-24 | 重庆工商大学 | Application of using N-benzoyl-N-phenylhydroxylamine as stabilizing agent in domestic waste incineration fly ash treatment |
| CN103242853A (en) * | 2013-05-10 | 2013-08-14 | 黑龙江省科学院自然与生态研究所 | Heavy metal chelating agent and preparation method thereof |
| CN103242853B (en) * | 2013-05-10 | 2015-09-09 | 黑龙江省科学院自然与生态研究所 | A kind of heavy metal chelant and preparation method thereof |
| CN106000353A (en) * | 2016-06-06 | 2016-10-12 | 无锡伊佩克科技有限公司 | Soil heavy metal adsorbent and preparation method thereof |
| CN112296061A (en) * | 2019-07-30 | 2021-02-02 | 王均 | Harmless treatment method for slag and application of treated slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107537129A (en) | A kind of heavy metal stabilizer and its application method for administering incineration of refuse flyash | |
| CN102319721B (en) | Method for simultaneously treating domestic garbage burning fly ash and domestic garbage leachate | |
| US20050209496A1 (en) | Method for microstabilization of heavy metal bearing materials and wastes | |
| CN105683097B (en) | Agent for treating hazardous substance | |
| CN101474468A (en) | Method for treating burning flyash using chelant | |
| CN101642612A (en) | Stable heavy metal chelating agent and use method thereof | |
| JP2014054602A (en) | Insolubilizer of harmful matter and insolubilization treatment method of harmful matter | |
| CN1986720B (en) | Chemical stabilizer for treating garbage incinerating flyash, heavy metal and dust and its usage | |
| KR102053884B1 (en) | Method of improving filtration property of sewage sludge using ferric sulfate and method of treating sewage using the same | |
| JP2009249399A (en) | Heavy metal treatment agent and method for treating heavy metal pollutant | |
| JP4529191B2 (en) | Heavy metal stabilization treatment method, heavy metal stabilizer | |
| JP2008264627A (en) | Waste treatment material and treatment method for detoxifying fly ash (soot and dust) and burned ash or the like | |
| JP4289673B2 (en) | Heavy metal elution inhibitor and heavy metal elution prevention method and apparatus using the same | |
| JP5160759B2 (en) | Heavy metal dissolution inhibitor | |
| Lu et al. | Reduction and Stabilization Remediation of Hexavalent Chromium (Cr6+)-contaminated Soil. | |
| CN107050734A (en) | A kind of incineration of refuse flyash curing agent | |
| CN112624726A (en) | Liquid mixed chelating agent for hazardous waste landfill standard and preparation method thereof | |
| JP3332150B2 (en) | How to treat incineration residues | |
| CN112143501A (en) | Stabilizing agent and stabilizing and repairing method for lead-polluted soil | |
| JP4834719B2 (en) | Waste disposal method | |
| JP2008200628A (en) | Heavy metal treatment agent and method for treating material contaminated with heavy metal using the same | |
| JP4476110B2 (en) | Heavy metal scavengers containing morpholine dithiocarbamic acid alkali metal salts | |
| JP5493788B2 (en) | Heavy metal treating agent and method for treating heavy metal contaminants | |
| CN215143307U (en) | Continuous supercritical/subcritical water oxidation solid-liquid mixture co-processing system | |
| TWI325795B (en) | Method for stabilization of heavy metals and odor control with dicalcium phosphate dihydrate powder in the incinerator bottom ash |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100210 |