CN105963902A - Method for innocent treatment of arsenic sulfide residues - Google Patents
Method for innocent treatment of arsenic sulfide residues Download PDFInfo
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- CN105963902A CN105963902A CN201610281089.2A CN201610281089A CN105963902A CN 105963902 A CN105963902 A CN 105963902A CN 201610281089 A CN201610281089 A CN 201610281089A CN 105963902 A CN105963902 A CN 105963902A
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- arsenic sulfide
- arsenic
- sulfide slag
- harmless treatment
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- 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
- A62D3/38—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by oxidation; by combustion
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- 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
Abstract
The invention discloses a method for innocent treatment of arsenic sulfide residues. The method comprises the following steps of at room temperature, adding water in the arsenic sulfide residues, mixing to obtain a mixture I, adding sodium sulphide to react so as to obtain a mixture II, then adding an oxidizing agent to carry out oxidizing reaction so as to obtain a mixture III, adding ferric salt or aluminum salt to react so as to obtain a mixture IV, and then adding cement. The method for innocent treatment of the arsenic sulfide residues has the advantages that the leaching concentration of arsenic in the arsenic sulfide residues can be effectively reduced, the processed arsenic sulfide residues can meet the requirement in hazardous waste landfills, the technological process is simple, the capacity expansion is less, the operability is high, the stirring time is short, and the energy consumption is low.
Description
Technical field
The invention belongs to hazardous waste innoxious process for treating field, a kind of method particularly relating to arsenic sulfide slag harmless treatment.
Background technology
Arsenic (As) and compound thereof belong to extremely toxic substance.Arsenic in arsenic sulfide slag is with armorphous sulfide (As2S2Or As2S3Or As2S5Presented in), and easily dissolution under acidity or alkaline environment, water and soil are caused severe contamination.
Process currently for arsenic sulfide slag mainly carries out recycling and solidification and stabilization processes.Its resource is mainly and arsenic carries out leaching matter containing arsenics such as producing arsenic oxide arsenoxide.Due to arsenic and the strong toxicity of compound thereof, marketing management is difficult, usage amount is relatively fewer and purity requirement is high, so most arsenic sulfide slag is in the state of storing up, it would be highly desirable to process.
The advantages such as treatment agent is cheap to be easy to get owing to it has in stabilisation/solidification, and processing cost is relatively low, and disposal amount is big become the most common processing method of arsenic-containing waste residue.In terms of the solidification and stabilization of existing arsenic sulfide slag, have with heavy metal sewage sludge, calcium hydroxide as stabilization agent, with yellow sand and cement as firming agent, the treatment of wastes with processes of wastes against one another, it is achieved the stabilisation/solidification of arsenic sulfide slag, but, its increase-volume is big, indirectly adds the process cost of disposal of arsenic sulfide slag.Also have in arsenic sulfide slag, add the inorganic flocculating agent liquid such as polyaluminium sulfate, bodied ferric sulfate, polysilicon acid flocculant, add iron powder, magnesium oxide pressed powder adsorbent；It is eventually adding asbestos wool stirring.This technological process is simple, workable, but its mixing time is longer, and energy consumption is higher.
Summary of the invention
A kind of method that it is an object of the invention to provide arsenic sulfide slag harmless treatment, the method can effective stabilisation/solidification arsenic sulfide slag.
The technical scheme is that and be achieved in that: a kind of method of arsenic sulfide slag harmless treatment, comprise the following steps: at ambient temperature, in arsenic sulfide slag, add water, mixing, obtain mixture I, add sodium sulfide reaction, be 8～12 to pH value, obtain mixture II, it is subsequently adding oxidant and carries out oxidation reaction, obtain mixture III, add iron salt or aluminium salt reaction subsequently, obtain mixture IV, add cement.
In the present invention, the sodium sulfide etc. that addition water can make back add better contacts with arsenic sulfide slag, fully reacts；Add sodium sulfide reaction to be to generate new matter containing arsenic；Add iron salt or aluminium salt reaction is to make newly-generated matter containing arsenic react precipitations such as being converted into Fe/Al-As-S/O further；Adding cement is for solidifying, and conveniently carries out filling or stacking process.
As preferably, described arsenic sulfide slag is 10～100:10～50 with the mass ratio of water；The time of described mixing is 1～10 minute.
As preferably, the time of described sodium sulfide reaction is 30～60 minutes.
As preferably, described oxidant is selected from the one in hydrogen peroxide or sodium hypochlorite.
As preferably, the time of described oxidation reaction is 30～60 minutes.
As preferably, described mixture II is 1:1～30 with the mass ratio of oxidant.
As preferably, described iron salt is selected from the one in bodied ferric sulfate or ferrous sulfate, or their arbitrary proportion mixture；Described aluminium salt is selected from aluminium polychlorid.
As preferably, described mixture III is 1:0.1～5 with the mass ratio of iron salt or aluminium salt；The time of described addition iron salt or aluminium salt reaction is 10～45 minutes.
As preferably, described mixture IV is 1:1～20 with the mass ratio of cement.
As preferably, after the step of described addition cement, also include maintenance；The time of described maintenance is 3～15 days.
The beneficial effects of the present invention is:
Utilize arsenic sulfide and sodium sulfide, iron salt, the complex reaction that aluminium salt etc. is occurred, generate Fe/Al-As-S/O system arsenic firming body, it is achieved the harmless treatment of arsenic.Can effectively reduce the arsenic leaching concentration of arsenic sulfide slag, arsenic sulfide slag after treatment meets danger wastes landfill requirement, and technological process is simple, increase-volume is little, workable, mixing time is short, energy consumption is low.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only one of them embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
At ambient temperature, weigh 100g arsenic sulfide slag, add 50mL water, add sodium sulfide (Na2S), stirring reaction is 9 to pH value, is placed in reactor and stirs, and reacts 60min；Add 5mL hydrogen peroxide, aoxidize 30min；Add the bodied ferric sulfate (PFS) of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration meets hazard waste landfill Environmental capacity standard (GB 18598-2001).
Embodiment 2
At ambient temperature, weighing 100g arsenic sulfide slag, add 50mL water, add sodium sulfide (Na2S), stirring reaction is 10 to pH value, is placed in reactor and stirs, and reacts 40min；Add 5mL hydrogen peroxide, aoxidize 30min；Add the ferrous sulfate of 5g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration meets hazard waste landfill Environmental capacity standard (GB 18598-2001).
Embodiment 3
At ambient temperature, weighing 100g arsenic sulfide slag, add 50mL water, add sodium sulfide (Na2S), stirring reaction is 11 to pH value, is placed in reactor and stirs, and reacts 30min；Add 5mL hydrogen peroxide, aoxidize 30min；Add the aluminium polychlorid (PAC) of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration meets hazard waste landfill Environmental capacity standard (GB 18598-2001).
Embodiment 4
At ambient temperature, weigh 100g arsenic sulfide slag, add 10mL water, mix 10 minutes, add sodium sulfide (Na2S), stirring reaction is 8 to pH value, is placed in reactor stirring, reacts 60min；Add 5mL hydrogen peroxide, aoxidize 30min；Add bodied ferric sulfate (PFS) and the ferrous sulfate of 3g of 3g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration meets hazard waste landfill Environmental capacity standard (GB 18598-2001).
Embodiment 5
At ambient temperature, weigh 100g arsenic sulfide slag, add 50mL water, mix 10 minutes, add sodium sulfide (Na2S), stirring reaction is 12 to pH value, is placed in reactor stirring, reacts 60min；Add sodium hypochlorite, aoxidize 30min；Add the aluminium polychlorid of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration meets hazard waste landfill Environmental capacity standard (GB 18598-2001).
Comparative example 1
At ambient temperature, weigh 100g arsenic sulfide slag, add 50mL water, mix 10 minutes, add sodium sulfide (Na2S), stirring reaction is 7 to pH value, is placed in reactor stirring, reacts 60min；Add sodium hypochlorite, aoxidize 30min；Add the bodied ferric sulfate (PFS) of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration can not meet hazard waste landfill Environmental capacity standard (GB 18598-2001).
Comparative example 2
At ambient temperature, weigh 100g arsenic sulfide slag, add 50mL water, mix 10 minutes, add sodium sulfide (Na2S), stirring reaction is 13 to pH value, is placed in reactor stirring, reacts 60min；Add sodium hypochlorite, aoxidize 30min；Add the bodied ferric sulfate (PFS) of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration can not meet hazard waste landfill Environmental capacity standard (GB 18598-2001).
Comparative example 3
At ambient temperature, weigh 100g arsenic sulfide slag, add 50mL water, mix 10 minutes, add sodium sulfide (Na2S), stirring reaction is 14 to pH value, is placed in reactor stirring, reacts 60min；Add sodium hypochlorite, aoxidize 30min；Add the bodied ferric sulfate (PFS) of 6g, stir 20min, complete the stabilisation of arsenic；Add 20g cement, stir 5min；Carry out maintenance.
Performance test: according to leaching toxicity from solid waste method-horizontal vibration method (GB 5086.2-1997), arsenic leaching concentration can not meet hazard waste landfill Environmental capacity standard (GB 18598-2001).
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. the method for an arsenic sulfide slag harmless treatment, it is characterised in that: comprise the following steps: in room temperature
Under the conditions of, in arsenic sulfide slag, add water, mixing, obtain mixture I, add sodium sulfide reaction, to pH
Value is 8～12, obtains mixture II, is subsequently adding oxidant and carries out oxidation reaction, obtains mixture III, the most again
Add iron salt or aluminium salt reaction, obtain mixture IV, add cement.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described arsenic sulfide slag is 10～100:10～50 with the mass ratio of water；The time of described mixing is 1～10 minute.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
The time of described sodium sulfide reaction is 30～60 minutes.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described oxidant one in hydrogen peroxide or sodium hypochlorite.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
The time of described oxidation reaction is 30～60 minutes.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described mixture II is 1:1～30 with the mass ratio of oxidant.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described iron salt one in bodied ferric sulfate or ferrous sulfate, or their arbitrary proportion mixture；Institute
State aluminium salt selected from aluminium polychlorid.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described mixture III is 1:0.1～5 with the mass ratio of iron salt or aluminium salt；Described addition iron salt or aluminium salt reaction time
Between be 10～45 minutes.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
Described mixture IV is 1:1～20 with the mass ratio of cement.
The method of a kind of arsenic sulfide slag harmless treatment the most according to claim 1, it is characterised in that:
After the step of described addition cement, also include maintenance；The time of described maintenance is 3～15 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610281089.2A CN105963902A (en) | 2016-05-03 | 2016-05-03 | Method for innocent treatment of arsenic sulfide residues |
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| CN201610281089.2A CN105963902A (en) | 2016-05-03 | 2016-05-03 | Method for innocent treatment of arsenic sulfide residues |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226210A (en) * | 2018-11-05 | 2019-01-18 | 西安同鑫伟业环保科技有限公司 | A kind of stable curing method of arsenic-containing waste residue |
| CN111544822A (en) * | 2020-04-13 | 2020-08-18 | 上海圣珑环境修复技术有限公司 | Barium slag stabilizing treatment method |
| CN111940471A (en) * | 2020-09-07 | 2020-11-17 | 吉安创成环保科技有限责任公司 | Method for reducing organic matter content in solid waste |
| CN114160555A (en) * | 2021-11-25 | 2022-03-11 | 赛恩斯环保股份有限公司 | Wet mineralization and detoxification treatment method for arsenic sulfide slag |
| CN114378092A (en) * | 2021-12-29 | 2022-04-22 | 中南大学 | Method for oxidation stabilization treatment of arsenic sulfide slag and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358643A (en) * | 1994-02-08 | 1994-10-25 | Mcclintock William W | Treatment method for removing arsenic from arsenic contaminated water |
| JPH10128275A (en) * | 1996-11-05 | 1998-05-19 | Tosoh Corp | Treatment of arsenic-containing ash |
| FR2759308A1 (en) * | 1997-02-11 | 1998-08-14 | Oberkampf Louis | Arsenic-containing waste stabilisation and solidification |
| CN101786659A (en) * | 2009-11-16 | 2010-07-28 | 瓮福（集团）有限责任公司 | Method for recovering arsenic sulfide from arsenic-containing waste residue |
| CN102601108A (en) * | 2012-03-06 | 2012-07-25 | 合肥市吴山固体废物处置有限责任公司 | Method for treating arsenic polluted soil |
| CN103406333A (en) * | 2013-08-14 | 2013-11-27 | 路域生态工程有限公司 | Safe disposal method for high-concentration arsenic residue |
| CN103920704A (en) * | 2014-04-24 | 2014-07-16 | 杭州大地环保工程有限公司 | Arsenic-polluted soil remediation method |
-
2016
- 2016-05-03 CN CN201610281089.2A patent/CN105963902A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358643A (en) * | 1994-02-08 | 1994-10-25 | Mcclintock William W | Treatment method for removing arsenic from arsenic contaminated water |
| JPH10128275A (en) * | 1996-11-05 | 1998-05-19 | Tosoh Corp | Treatment of arsenic-containing ash |
| FR2759308A1 (en) * | 1997-02-11 | 1998-08-14 | Oberkampf Louis | Arsenic-containing waste stabilisation and solidification |
| CN101786659A (en) * | 2009-11-16 | 2010-07-28 | 瓮福（集团）有限责任公司 | Method for recovering arsenic sulfide from arsenic-containing waste residue |
| CN102601108A (en) * | 2012-03-06 | 2012-07-25 | 合肥市吴山固体废物处置有限责任公司 | Method for treating arsenic polluted soil |
| CN103406333A (en) * | 2013-08-14 | 2013-11-27 | 路域生态工程有限公司 | Safe disposal method for high-concentration arsenic residue |
| CN103920704A (en) * | 2014-04-24 | 2014-07-16 | 杭州大地环保工程有限公司 | Arsenic-polluted soil remediation method |
Non-Patent Citations (1)
| Title |
|---|
| 向雪松等: "砷碱渣浸出液铁盐沉砷过程研究", 《中国锰业》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226210A (en) * | 2018-11-05 | 2019-01-18 | 西安同鑫伟业环保科技有限公司 | A kind of stable curing method of arsenic-containing waste residue |
| CN109226210B (en) * | 2018-11-05 | 2021-08-31 | 西安同鑫伟业环保科技有限公司 | Stable solidification method of arsenic-containing waste residue |
| CN111544822A (en) * | 2020-04-13 | 2020-08-18 | 上海圣珑环境修复技术有限公司 | Barium slag stabilizing treatment method |
| CN111940471A (en) * | 2020-09-07 | 2020-11-17 | 吉安创成环保科技有限责任公司 | Method for reducing organic matter content in solid waste |
| CN114160555A (en) * | 2021-11-25 | 2022-03-11 | 赛恩斯环保股份有限公司 | Wet mineralization and detoxification treatment method for arsenic sulfide slag |
| CN114160555B (en) * | 2021-11-25 | 2022-09-16 | 赛恩斯环保股份有限公司 | Wet mineralization and detoxification treatment method for arsenic sulfide slag |
| CN114378092A (en) * | 2021-12-29 | 2022-04-22 | 中南大学 | Method for oxidation stabilization treatment of arsenic sulfide slag and application thereof |
| CN114378092B (en) * | 2021-12-29 | 2023-09-08 | 中南大学 | Method for oxidation stabilization treatment of arsenic sulfide slag and application thereof |
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Application publication date: 20160928 |