CN110508596A - A kind of processing method of dangerous waste flying ash - Google Patents
A kind of processing method of dangerous waste flying ash Download PDFInfo
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- CN110508596A CN110508596A CN201910784298.2A CN201910784298A CN110508596A CN 110508596 A CN110508596 A CN 110508596A CN 201910784298 A CN201910784298 A CN 201910784298A CN 110508596 A CN110508596 A CN 110508596A
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- dust
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- dangerous waste
- flying dust
- landfill
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- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 238000003672 processing method Methods 0.000 title claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007711 solidification Methods 0.000 claims abstract description 12
- 230000008023 solidification Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000003814 drug Substances 0.000 claims abstract description 11
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002738 chelating agent Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 23
- 239000011651 chromium Substances 0.000 description 13
- 229910052804 chromium Inorganic materials 0.000 description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000011133 lead Substances 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000001533 respiratory mucosa Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of processing methods of dangerous waste flying ash, it is related to dangerous waste processing environmental technology field, this method is using " mixing+maintenance+detection+storage landfill " treatment process, mixing is by solidifying flying dust by flocculent precipitation with medicament, flying dust after solidification is conserved and is detected, if it is qualified that the flying dust after maintenance detects, then enter inventory's landfill, if the flying dust detection after maintenance is unqualified, it is then crushed, sieves, it re-starts and detects and redefine solidification scheme, and handled.A kind of processing method of dangerous waste flying ash provided by the present invention, treatment process is at low cost, easy to operate, does not generate secondary pollution；Curing system is in confined space, it is ensured that the dust generated in treatment process does not leak；The dust generated in operation is collected by the higher bag filter of efficiency of dust collection；And flying dust can carry out landfill disposal after must detecting up to landfill yard admissions criteria after handling.
Description
Technical field
The present invention relates to dangerous wastes to handle environmental technology field, specially a kind of processing method of dangerous waste flying ash.
Background technique
In recent years, with the continuous growth of industrial solid wastes, and dangerous waste burning disposal is because can be realized solid waste
Minimizing and innoxious be able to promote and apply rapidly in each big city.And the flying dust generated during dangerous waste is burned is remaining
Object can also generate certain environmental problem.A large amount of fugitive dust can be generated in lower ash and pack, transportational process.All ashes
Fly processing workshop be it is dusty, working environment is extremely severe, and the health to worker is very big injury, in this environment
Personnel's overwhelming majority of middle work suffers from occupational disease.Respiratory tract, lung and skin will receive different degrees of injury.Due to
Ammonium hydroxide or urea are added during fume treatment, the ammonia taste of flying dust absorption is extremely heavy.In existing flying dust treatment process, Suo Youfei
Grey workshop ammonia taste is gathered, and operator's eyes, nose will receive the injury of irritant gas, and respiratory mucosa disease is very universal.
Organic matter therein is mainly discharged in the form of gaseous material；And inorganic substances then primarily form solid particulate matter, wherein particle
Larger solid is deposited on incinerator bottom and fire grate, referred to as bottom ash, and those tiny particulate matters are then swum in flue gas,
Enter flue gas purification system together with flue gas, these particulate matters constitute the ratio of flying ash 50%, remaining flying ash
It is then derived from the lime stone or active carbon added during gas cleaning, (electrostatic precipitator, cloth bag remove in deduster jointly for they
Dirt device) in be captured, while also some tiny particulate matter settles down in the bottom of flue and chimney, these are captured
Then it is referred to as flying ash with the tiny particles content to settle down.
The moisture content of flying ash is very low, is in light gray powder.Its granular size is uneven, structure is complicated, property is changeable,
Usual fly ash granule partial size is less than 100 μm, and rough surface, has biggish specific surface and higher voidage.From flying dust
From the point of view of chemical composition, the elements such as including Cl, Ca, K, Na, Si, Al, O, main chemical compositions CaO, SiO2、Al2O3、Fe2O3.This
Outside, flying ash is often containing the heavy metal of high concentration, such as Hg, Pb, Cd, Cu, Cr and Zn, these heavy metals are mainly with aerosol
Little particle and the form for being enriched in fly ash granule surface exist；Also contain a small amount of dioxin and furan in flying ash simultaneously
It mutters, these polluters can be by polluted-water, soil, and then jeopardizes the health of animals and plants and human body.Therefore it burns
Flying dust its with very strong potential risk.In the method for handling these dangerous waste flying ash at present, ammonia concentration is big in the process,
Smell is big, and production on-site environment is poor, and detects after handling and be unsatisfactory for standard of landfill, and the fugitive dust in treatment process is big, therefore anxious
Existing flying ash processing method need to be improved.
Summary of the invention
In method of the present invention in order to solve existing dangerous waste flying ash, process smell is big, production on-site environment is poor and place
The problem of detection is unsatisfactory for standard of landfill after reason, provides a kind of processing method of dangerous waste flying ash.
The present invention is achieved by the following technical solution: a kind of processing method of dangerous waste flying ash, including as follows
Step:
(1) the dangerous waste flying ash that need to be handled is detected, indices according to testing result, the detection of indices includes through original
The indexs such as the device analysis such as sub- absorption spectrophotometer, atomic fluorescence copper, zinc, lead, chromium, nickel, chromium, Cr VI, mercury, arsenic, fluorine
Content, and solidification scheme is determined according to These parameters, it is matched comprising required medicament and flying dust:
1. materials and cement ratio: mass ratio: 100:10~20；
2. material moisture controls: 70%~80%；
3. chelating agent ratio: mass ratio: 100:1~5；
4. conserving room temperature: 20~25 DEG C；
5. fog room moisture: 60%~80%；
(2) quantitative water, cement, dangerous waste flying ash and medicament are mixed and put by the solidification scheme determined by step (1)
It is stirred in blender；
(3) dust generated in step (2) whipping process is collected by bag filter, the dust return step after collection
(1) it is handled with (2)；
(4) cured flying dust carries out air natural curing after being mixed in step (2), is then detected, through atom
The indexs such as the device analysis such as absorption spectrophotometer, atomic fluorescence copper, zinc, lead, chromium, nickel, chromium, Cr VI, mercury, arsenic, fluorine contain
Amount, and these standards in industry have set flying dust standard of landfill, see whether qualification after comparing；
(5) if the flying dust detection after processing solidifies in step (4) is qualified, storage landfill is carried out；
(6) if flying dust detection is unqualified after processing in step (4), redefine solidification scheme, and by the flying dust after maintenance into
Row is broken, sieves, and is lined up dust, and the dust that shattering process generates is collected by bag filter, and dust returns after collection
Step (1) and (2) are handled；
(7) broken flying dust re-starts step (1) ~ (6), handles until entering landfill yard after qualified.
A kind of processing method of dangerous waste flying ash provided by the present invention, this method use " mixing+maintenance+inspection
Survey+storage landfill " treatment process enters inventory's landfill if the flying dust after maintenance is qualified, if the flying dust after maintenance is unqualified,
Broken, screening, re-starts and detects and redefine solidification scheme, and handled.Since the property of flying dust will not complete phase
Together, therefore the curing process scheme of flying dust, the proportion of medicament is required to according to being actually adjusted.
Compared with prior art the invention has the following advantages: a kind of dangerous waste flying ash provided by the present invention
Processing method, treatment process is at low cost, easy to operate, does not generate secondary pollution；Curing system is in confined space, it is ensured that place
The dust generated during reason does not leak；The dust generated in operation is collected by the higher bag filter of efficiency of dust collection；
And flying dust can carry out landfill disposal after must detecting up to landfill yard admissions criteria after handling；Selected water is item in this method
The recycle-water of mesh after processing achievees the purpose that waste recycling, saves processing cost.
Detailed description of the invention
Fig. 1 is the process flow diagram of the processing method of dangerous waste flying ash in the embodiment of the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, and embodiments of the present invention are not limited thereto.
Agents useful for same can routinely be bought unless otherwise specified from market in embodiment.
A kind of processing method of dangerous waste flying ash, includes the following steps:
(1) the dangerous waste flying ash that need to be handled is detected, indices according to testing result, the detection of indices includes through original
The indexs such as the device analysis such as sub- absorption spectrophotometer, atomic fluorescence copper, zinc, lead, chromium, nickel, chromium, Cr VI, mercury, arsenic, fluorine
Content, and solidification scheme is determined according to These parameters, it is matched comprising required medicament and flying dust:
1. materials and cement ratio: mass ratio: 100:10~20；
2. material moisture controls: 70%~80%；
3. chelating agent ratio: mass ratio: 100:1~5；
4. conserving room temperature: 20~25 DEG C；
5. fog room moisture: 60%~80%；
(2) quantitative water, cement, dangerous waste flying ash and medicament are mixed and put by the solidification scheme determined by step (1)
It is stirred in blender, the medicament of mixing uses flocculent precipitation；
(3) dust generated in step (2) whipping process is collected by bag filter, the dust return step after collection
(1) it is handled with (2)；
(4) cured flying dust conserves after being mixed in step (2), using air natural curing or uses silicon powder
Hydro-thermal conserves stabilizing method, and curing temperature is 100 DEG C, pressure 0.2MPa, and curing time is 7 ~ 25 days；Then it is detected,
Refer to through the device analysis such as atomic absorption spectrophotometer, atomic fluorescence copper, zinc, lead, chromium, nickel, chromium, Cr VI, mercury, arsenic, fluorine etc.
Target content, and these standards in industry have set flying dust standard of landfill, see whether qualification after comparing；
(5) if the flying dust detection after processing solidifies in step (4) is qualified, storage landfill is carried out；
(6) if flying dust detection is unqualified after processing in step (4), redefine solidification scheme, and by the flying dust after maintenance into
Row is broken, sieves, and is lined up dust, and the dust that shattering process generates is collected by bag filter, and dust returns after collection
Step (1) and (2) are handled；
(7) broken flying dust re-starts step (1) ~ (6), handles until entering landfill yard after qualified.
Since the property of flying dust will not be identical, the curing process scheme of flying dust, the proportion of medicament is required to root
Factually border is adjusted.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (3)
1. a kind of processing method of dangerous waste flying ash, characterized by the following steps:
(1) the dangerous waste flying ash that need to be handled is detected, indices according to testing result determine solidification scheme, comprising required
Medicament and flying dust match:
1. materials and cement ratio: mass ratio: 100:10~20；
2. material moisture controls: 70%~80%；
3. chelating agent ratio: mass ratio: 100:1~5；
4. conserving room temperature: 20~25 DEG C；
5. fog room moisture: 60%~80%；
(2) quantitative water, cement, dangerous waste flying ash and medicament are mixed and put by the solidification scheme determined by step (1)
It is stirred in blender；
(3) dust generated in step (2) whipping process is collected by bag filter, the dust return step after collection
(1) it is handled with (2)；
(4) cured flying dust carries out air natural curing after being mixed in step (2), is then detected；
(5) if the flying dust detection after processing solidifies in step (4) is qualified, storage landfill is carried out；
(6) if flying dust detection is unqualified after processing in step (4), redefine solidification scheme, and by the flying dust after maintenance into
Row is broken, sieves, and is lined up dust, and the dust that shattering process generates is collected by bag filter, and dust returns after collection
Step (1) and (2) are handled；
(7) broken flying dust re-starts step (1) ~ (6), handles until entering landfill yard after qualified.
2. a kind of processing method of dangerous waste flying ash according to claim 1, it is characterised in that: in the step (2),
The medicament of mixing uses flocculent precipitation.
3. a kind of processing method of dangerous waste flying ash according to claim 1, it is characterised in that: in the step (4)
Maintenance can also using silicon powder hydro-thermal conserve stabilizing method, curing temperature be 100 DEG C, pressure 0.2MPa, curing time 7
~ 25 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910784298.2A CN110508596A (en) | 2019-08-23 | 2019-08-23 | A kind of processing method of dangerous waste flying ash |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910784298.2A CN110508596A (en) | 2019-08-23 | 2019-08-23 | A kind of processing method of dangerous waste flying ash |
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| CN110508596A true CN110508596A (en) | 2019-11-29 |
Family
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|---|---|---|---|---|
| CN102962240A (en) * | 2012-11-23 | 2013-03-13 | 东华大学 | Method for stabilizing treatment of waste incineration fly ash by utilizing silicon powder hydrothermal curing |
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| CN106348552A (en) * | 2016-08-31 | 2017-01-25 | 赵卫平 | Industrial sludge solid waste treatment method |
| JP2017113730A (en) * | 2015-12-25 | 2017-06-29 | 国立大学法人山口大学 | Method for solidification of low calcium fluidized bed coal ash and solidified substance |
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| CN109350904A (en) * | 2018-10-26 | 2019-02-19 | 启迪桑德环境资源股份有限公司 | A kind of flyash curing stabilisation chelates automated system again |
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2019
- 2019-08-23 CN CN201910784298.2A patent/CN110508596A/en active Pending
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| CN102962240A (en) * | 2012-11-23 | 2013-03-13 | 东华大学 | Method for stabilizing treatment of waste incineration fly ash by utilizing silicon powder hydrothermal curing |
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| JP2017113730A (en) * | 2015-12-25 | 2017-06-29 | 国立大学法人山口大学 | Method for solidification of low calcium fluidized bed coal ash and solidified substance |
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| Title |
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