CN109761569A - A kind of solidification landfill process of solid dangerous waste - Google Patents
A kind of solidification landfill process of solid dangerous waste Download PDFInfo
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- CN109761569A CN109761569A CN201910053404.XA CN201910053404A CN109761569A CN 109761569 A CN109761569 A CN 109761569A CN 201910053404 A CN201910053404 A CN 201910053404A CN 109761569 A CN109761569 A CN 109761569A
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Abstract
The invention discloses a kind of solidification landfill process of solid dangerous waste, include the following steps: that 1) solid waste is dosed into stabilisation curing apparatus, white lime is added and water adjusts solid waste pH 8 or more, stirring evenly makes solid waste in muddy；2) aqueous solution of the 1-3% heavy metal chelant of quantity of solid waste is added, stirs evenly；3) it conserves 5-7 days, makes after stabilizing solidified waste maintenance molding in landfill maintenance area, it can harmless treatment.Landfill process of the present invention is simple, efficiently solves the problems, such as the harmlessness disposing of low content arsenide waste, and lime/cement dosage in common solidification scheme is greatly reduced, and provides effective scheme for the landfill stabilization of the type waste.
Description
Technical field
The present invention relates to the landfill process of solid dangerous waste, and in particular to a kind of solidification landfill of solid dangerous waste
Technique.
Background technique
It receives petroleum in the landfill class waste handled mostly at present, the hazardous waste catalyst that coal chemical industry generates, inhale
Attached dose, active carbon have the such waste of significant portion to have a small amount of arsenide exceeded, and harmlessness disposing is carried out to it in the process must be right
After arsenic carries out stabilisation solidification in hazardous waste, landfill stabilization just can be carried out.It is solidification that conventional lime/cement is currently mainly used
Method, but its difficult and arsenide forms stable compound not soluble in water, and hardly possible plays stabilisation solidification effect, and stone to arsenide
Ash/cement dosage is big, needs to study more effective solidification landfill scheme.
Summary of the invention
Based on this, the present invention provides a kind of solidification landfill process of solid dangerous waste, and especially a small amount of arsenic is exceeded
The stabilisation landfill process of solid waste.
The present invention is achieved through the following technical solutions:
A kind of solidification landfill process of solid dangerous waste includes the following steps: that solid waste 1) is dosed into stabilisation admittedly
Change in equipment, white lime is added and water adjusts solid waste pH 8 or more, stirring evenly makes solid waste in muddy；2) add
The aqueous solution for entering the 1-3% heavy metal chelant of quantity of solid waste, stirs evenly；3) it conserves 5-7 days, makes steady in landfill maintenance area
It surely, can harmless treatment after changing solidified waste maintenance molding.
In wherein some embodiments, solid waste is the solid danger of petroleum, coal chemical industry generation in the step 1)
Dangerous waste.
It is tank reactor that curing apparatus is stabilized in wherein some embodiments, in the step 1).
In wherein some embodiments, the additive amount of white lime and water is respectively the 5- of quantity of solid waste in the step 1)
8% and 50-70%.
In wherein some embodiments, the weight ratio of white lime and water is 1:(10-15 in the step 1)).
In wherein some embodiments, pH value is 8-10 in the step 1).
In wherein some embodiments, heavy metal chelant is diethyldithiocarbamate in the step 2.
Compared with prior art, the invention has the following beneficial effects:
The present invention is combined using white lime with heavy metal chelant diethyldithiocarbamate, can be effectively steady to arsenide a small amount of in solid waste
Fixedization solidification, white lime, which plays, adjusts PH and solidification effect, under conditions of PH >=8, diethyldithiocarbamate can be formed with arsenic it is stable not
It is dissolved in the heavy metal chelate of water.Landfill process of the present invention is simple, efficiently solves the innoxious place of low content arsenide waste
Problem is set, lime/cement dosage, the landfill stabilization for the type waste in common solidification scheme is greatly reduced and has provided
The scheme of effect.
Detailed description of the invention
Fig. 1 is the solidification landfill process figure of solid dangerous waste of the present invention.
Specific embodiment
The invention will be further elaborated combined with specific embodiments below, these embodiments be merely to illustrate the present invention and
The scope of application of the invention is not limited.
Embodiment 1
A kind of solidification landfill process of solid dangerous waste, includes the following steps: that solid waste 1) is dosed into still reaction
In device, it is 8 that 5% white lime and 50% water for being separately added into quantity of solid waste, which adjust solid waste pH value, and stirring evenly keeps solid useless
Object is in muddy；2) aqueous solution of 3% diethyldithiocarbamate of quantity of solid waste is added, stirs evenly；3) it is conserved 7 days in landfill maintenance area,
Make after stabilizing solidified waste maintenance molding, can harmless treatment, be to conserving stabilisations solidified waste after molding and testing As
1.5ppm can meet the standard of landfill of security landfill field.
Embodiment 2
A kind of solidification landfill process of solid dangerous waste, includes the following steps: that solid waste 1) is dosed into still reaction
In device, it is 10 that 5% white lime and 70% water for being separately added into quantity of solid waste, which adjust solid waste pH value, and stirring evenly keeps solid useless
Object is in muddy；2) aqueous solution of 1% diethyldithiocarbamate of quantity of solid waste is added, stirs evenly；3) it is conserved 5 days in landfill maintenance area,
Make after stabilizing solidified waste maintenance molding, can harmless treatment, be to conserving stabilisations solidified waste after molding and testing As
2.0ppm can meet the standard of landfill of security landfill field.
Embodiment 3
A kind of solidification landfill process of solid dangerous waste, includes the following steps: that solid waste 1) is dosed into still reaction
In device, it is 8 that 7% white lime and 60% water for being separately added into quantity of solid waste, which adjust solid waste pH value, and stirring evenly keeps solid useless
Object is in muddy；2) aqueous solution of 2% diethyldithiocarbamate of quantity of solid waste is added, stirs evenly；3) it is conserved 6 days in landfill maintenance area,
Make after stabilizing solidified waste maintenance molding, can harmless treatment, be to conserving stabilisations solidified waste after molding and testing As
0.5ppm can meet the standard of landfill of security landfill field.
Embodiment 4
A kind of solidification landfill process of solid dangerous waste, includes the following steps: that solid waste 1) is dosed into still reaction
In device, it is 8 that 8% white lime and 50% water for being separately added into quantity of solid waste, which adjust solid waste pH value, and stirring evenly keeps solid useless
Object is in muddy；2) aqueous solution of 1% diethyldithiocarbamate of quantity of solid waste is added, stirs evenly；3) it is conserved 7 days in landfill maintenance area,
Make after stabilizing solidified waste maintenance molding, can harmless treatment, be to conserving stabilisations solidified waste after molding and testing As
1.0ppm can meet the standard of landfill of security landfill field.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or change
The dynamic protection scope still in the invention.
Claims (7)
1. a kind of solidification landfill process of solid dangerous waste, which comprises the steps of: 1) throw solid waste
Expect and stabilize in curing apparatus, white lime and water is added and adjusts solid waste pH 8 or more, stirring evenly makes the solid waste be in
Muddy；2) aqueous solution of the 1-3% heavy metal chelant of quantity of solid waste is added, stirs evenly；3) it is conserved in landfill maintenance area
5-7 days, make after stabilizing solidified waste maintenance molding, it can harmless treatment.
2. the solidification landfill process of solid dangerous waste according to claim 1, which is characterized in that in the step 1)
Solid waste is the solid dangerous waste of petroleum, coal chemical industry generation.
3. the solidification landfill process of solid dangerous waste according to claim 1, which is characterized in that in the step 1)
Stabilisation curing apparatus is tank reactor.
4. the solidification landfill process of solid dangerous waste according to claim 1, which is characterized in that in the step 1)
The additive amount of white lime and water is respectively the 5-8% and 50-70% of quantity of solid waste.
5. the solidification landfill process of solid dangerous waste according to claim 4, which is characterized in that in the step 1)
The weight ratio of white lime and water is 1:(10-15).
6. the solidification landfill process of solid dangerous waste according to claim 1, which is characterized in that in the step 1)
PH value is 8-10.
7. the solidification landfill process of solid dangerous waste according to claim 1, which is characterized in that in the step 2
Heavy metal chelant is diethyldithiocarbamate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910053404.XA CN109761569A (en) | 2019-01-21 | 2019-01-21 | A kind of solidification landfill process of solid dangerous waste |
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| CN201910053404.XA CN109761569A (en) | 2019-01-21 | 2019-01-21 | A kind of solidification landfill process of solid dangerous waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927540A (en) * | 2020-08-17 | 2020-11-13 | 中煤能源研究院有限责任公司 | Method for disposing solid hazardous waste by utilizing underground space of mine |
| CN113332654A (en) * | 2021-05-25 | 2021-09-03 | 昆明理工大学 | Preparation method of bulk solid waste-based environment-friendly powder material |
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| JPH10113677A (en) * | 1996-10-09 | 1998-05-06 | Kokichi Sakai | Trapping agent for heavy metal and trapping method of heavy metal |
| CN101708499A (en) * | 2009-12-04 | 2010-05-19 | 同济大学 | Method for jointly stabilizing fly ash and arsenic-containing waste |
| CN101972766A (en) * | 2010-08-30 | 2011-02-16 | 天津渤海环保工程有限公司 | Refuse incineration fly ash solidification/stabilization treatment method |
| CN104174634A (en) * | 2014-08-15 | 2014-12-03 | 江苏理工学院 | Stable curing method of strongly acidic arsenic sulfide waste residues |
| CN104874581A (en) * | 2015-04-28 | 2015-09-02 | 江苏理工学院 | Method for stably solidifying zinc-containing phosphatized waste slag |
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2019
- 2019-01-21 CN CN201910053404.XA patent/CN109761569A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113677A (en) * | 1996-10-09 | 1998-05-06 | Kokichi Sakai | Trapping agent for heavy metal and trapping method of heavy metal |
| CN101708499A (en) * | 2009-12-04 | 2010-05-19 | 同济大学 | Method for jointly stabilizing fly ash and arsenic-containing waste |
| CN101972766A (en) * | 2010-08-30 | 2011-02-16 | 天津渤海环保工程有限公司 | Refuse incineration fly ash solidification/stabilization treatment method |
| CN104174634A (en) * | 2014-08-15 | 2014-12-03 | 江苏理工学院 | Stable curing method of strongly acidic arsenic sulfide waste residues |
| CN104874581A (en) * | 2015-04-28 | 2015-09-02 | 江苏理工学院 | Method for stably solidifying zinc-containing phosphatized waste slag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927540A (en) * | 2020-08-17 | 2020-11-13 | 中煤能源研究院有限责任公司 | Method for disposing solid hazardous waste by utilizing underground space of mine |
| CN111927540B (en) * | 2020-08-17 | 2022-06-28 | 中煤能源研究院有限责任公司 | Method for disposing solid hazardous waste by utilizing underground space of mine |
| CN113332654A (en) * | 2021-05-25 | 2021-09-03 | 昆明理工大学 | Preparation method of bulk solid waste-based environment-friendly powder material |
| CN113332654B (en) * | 2021-05-25 | 2023-02-28 | 昆明理工大学 | Preparation method of bulk solid waste-based environment-friendly powder material |
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Application publication date: 20190517 |