CN105327927A - Method and system for disposing incineration fly ash of household garbage - Google Patents
Method and system for disposing incineration fly ash of household garbage Download PDFInfo
- Publication number
- CN105327927A CN105327927A CN201510754057.5A CN201510754057A CN105327927A CN 105327927 A CN105327927 A CN 105327927A CN 201510754057 A CN201510754057 A CN 201510754057A CN 105327927 A CN105327927 A CN 105327927A
- Authority
- CN
- China
- Prior art keywords
- flying dust
- output
- fly ash
- pump
- incineration
- 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
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- 239000010881 fly ash Substances 0.000 title claims abstract description 62
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 23
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 37
- 238000005406 washing Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 19
- 238000007711 solidification Methods 0.000 claims abstract description 16
- 238000011105 stabilization Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000000428 dust Substances 0.000 claims description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
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- 238000002156 mixing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 239000002738 chelating agent Substances 0.000 claims description 19
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- 239000008187 granular material Substances 0.000 claims description 9
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- 239000008139 complexing agent Substances 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 8
- 239000012267 brine Substances 0.000 claims description 7
- 238000004056 waste incineration Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 238000010790 dilution Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
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- 150000003839 salts Chemical class 0.000 claims description 4
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- 238000004064 recycling Methods 0.000 abstract description 3
- 238000010169 landfilling Methods 0.000 abstract 3
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- 125000001309 chloro group Chemical class data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 Cl* 0.000 abstract 1
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound 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[Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 230000035512 clearance Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 241000370738 Chlorion Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 231100000614 Poison Toxicity 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- -1 chloride ionic compound Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000607 poisoning Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- 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
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
Abstract
The invention relates to a method and system for disposing incineration fly ash of household garbage, and relates to the field of research of innoxious disposal, reducing and recycling of incineration fly ash of household garbage. Fly ash is screened into large-particle fly ash and small-particle fly ash through wet screening, and then fixed stabilization, maintenance and landfilling are carried out on the small-particle fly ash; washing and solid-liquid separation are carried out on the large-particle fly ash, sedimentation of heavy metal is carried out on liquid, landfilling is carried out on the heavy metal in the liquid, and the liquid evaporates and is reutilized; and drying, extrusion pelleting and maintenance are carried out on solids for resource reutilization. The fly ash is disposed through the technical means of washing, solidification stabilization and resource recycling, so that the heavy metal in the fly ash is stabilized, and part of harmless fly ash residues and chlorine salt are recycled. The system and method for disposing incineration fly ash are simple, the effect of removing chloridion and heavy metal of the fly ash is remarkable, and the fly ash landfilling cost and occupied land are reduced; and disposed ceramic particles and fly ash residues can be recycled, and the remarkable economic benefits and the environment protection function are achieved.
Description
Technical field
The present invention relates to that domestic garbage incineration flyash is innoxious, minimizing, Resource analysis field.
Background technology
Along with the development of Chinese Urbanization and living standards of the people, the generation of domestic waste increases year by year, increases rapidly every year on average with the speed of about 9%.Tradition garbage loading embeading takies a large amount of land resource, and can cause a series of pollution problem such as underground water and air; Then there is the problem that in long processing period, compost product, content of beary metal is high in compost treatment.And meanwhile, burning disposal then can realize the overall goal of innoxious, the stabilisation of rubbish, minimizing and resource to greatest extent, and efficient quick, energy utilization rate are high.
The developed countries such as current Japan, the U.S., Germany, Switzerland, Sweden and Canada are using the major way one of of waste incineration as treatment of urban garbage, China's this field starting is relatively late, the domestic waste of 4.9% is only had to pass through burning disposal from China in 2003, to 2009 12.9%, until China in 2013 is built erect 166 garbage burning factories.
But the garbage burning factory continued to bring out also brings various problems.House refuse can produce the flying ash of 3%-5% through burning, and the complexity due to the composition of house refuse own causes containing the numerous poisonous and harmful substance comprising bioxin, heavy metal in flying ash, and wherein heavy metal accounts for the 0.5%-3% of flying dust total amount.Flying dust does not add process and arbitrarily stacks, the entered environment possibly of heavy metal wherein, contaminated soil, harm water body, and enters biological chain through the medium such as soil, water body, causes murder by poisoning to human body and other biological.
Thus, domestic garbage incineration flyash must be disposed according to hazardous waste disposal according to " consumer waste incineration Environmental capacity standard " (GB18485-2014), comprises the innoxious and multiple minimizings such as security landfill, cement solidification, melting and solidification, chemical agent chelating stabilisation, the method for resource processes it.But, mostly in these methods only temporary solidification and stabilization is carried out to the poisonous and harmful substance in flying dust, can not guarantee heavy metal wherein external force or internal cause act under reenter environment.
Summary of the invention
The object of the invention is for above problem, a kind of characteristic from domestic garbage incineration flyash itself is provided to start with, in conjunction with particle size of fly ash and the relation contained by it between heavy metal, utilize washing, technological means that solidification and stabilization and resource are recycled processes flying dust, recycle processing method and the system thereof of the domestic garbage incineration flyash of the innoxious flying dust residue of part and villaumite to the heavy metal in stable flying dust.
Processing method of the present invention comprises following treatment step:
1) sieve: the flying dust after consumer waste incineration is mixed with water, form granule flying dust and bulky grain flying dust by wet screening;
2) fixing-stable: by the granule flying dust that formed in step 1) and cement mixing, add chelating agent, the heavy metal class in granule flying dust and chelating agent react simultaneously, generates chelate thus stabilized;
3) maintenance: suppressed by the flying dust after stabilisation, forms cement solidification thing, carries out maintenance to the cement solidification thing after compressing;
4) degree of depth maintenance: the cement solidification thing tentatively condensed is carried out degree of depth maintenance;
5) landfill: by the cement solidification thing security landfill after degree of depth maintenance;
6) repeatedly wash: by the bulky grain flying dust elder generation that formed in step 1) and aqueous solution, by repeatedly washing, precipitating, form supernatant and solidliquid mixture;
7) Separation of Solid and Liquid: solidliquid mixture is separated and forms solidfied material and liquid;
8) precipitation of heavy metals: liquid reach a certain amount of after, add heavy metal complexing agent and make heavy metal precipitation, by heavy metal stabilization landfill after filtration;
9) evaporation process: the liquid of solid-liquid separation is carried out evaporation process, obtains distilled water and salt;
10) dry: drying is carried out to the solidfied material formed in step 7);
11) extruder grain: carry out extruder grain to dried solidfied material, forms shaping haydite blank;
12) constant-temperature moisture-keeping maintaining: to shaping haydite blank constant-temperature moisture-keeping maintaining.
The present invention starts with from the characteristic of domestic garbage incineration flyash itself, in conjunction with particle size of fly ash and the relation contained by it between heavy metal, wherein the chlorion in the chloride ionic compound in flying dust can elute by the water-washing pre-treatment of domestic garbage incineration flyash, the heavy metal that wash-out is a small amount of simultaneously; Later evaporation process then can collect the villaumite that in pre-treatment, chlorion is separated out, the steam evaporated away is then got back to tank by condensation reflux unit and is recycled, the technological means that the present invention utilizes washing, solidification and stabilization and resource are recycled processes flying dust, recycles the innoxious flying dust residue of part and villaumite to the heavy metal in stable flying dust.System for handling processing method of the present invention is simple, to chlorion and the heavy metals removal Be very effective of flying dust, decrease cost and the land seizure of flying dust landfill, and process after haydite and flying dust residue resourcebility utilize, there is distinct economic and environmental-protection function.
Flying dust after consumer waste incineration in step 1) of the present invention and the mixing ratio of water are 1: 5 ~ 20.
Step 2 of the present invention) in small particle diameter flying dust and the mass ratio of cement be 15 ~ 8: 1, chelating agent gross mass is 0.1 ~ 1.0wt%.
Curing time in step 3) of the present invention is 0.5 ~ 2h.
Degree of depth curing time in step 4) of the present invention is 1 ~ 5 day.
Bulky grain flying dust in step 6) of the present invention and aqueous solution mass ratio are 1: 5 ~ 20, and washing times is 2 ~ 5 times.
Heavy metal complexing agent addition in step 8) of the present invention accounts for 0.1 ~ 3% of gross mass.
The present invention comprises the first flying dust storage hole for the treatment of the system of domestic garbage incineration flyash, described first flying dust storage hole is connected with the first flying dust warehouse by elevator, described first flying dust warehouse is sieved with electric vibrating by fly ash carry machine and is connected, the small particle diameter flying dust delivery outlet of described electric vibrating sieve is connected with the second flying dust warehouse by small particle diameter fly ash carry machine, described second flying dust warehouse is connected with the flying dust input port of mixing roll by flying dust screw feeder, described mixing roll also comprises cement input port and chelating agent input port, the cement input port of described mixing roll is connected with the delivery outlet of cement storage bin by cement screw feeder, the chelating agent input port of described mixing roll is connected by the output of pump with chelating agent solution case, the output of described mixing roll is connected with press-forming machine by maintenance conveyer, described press-forming machine stores up to cheat with the second flying dust by horizontal annular conveyer and is connected,
The Large stone flying dust delivery outlet of described electric vibrating sieve is connected with washing pool by Large stone fly ash carry machine, described washing pool comprises mixture output, clear water output, the first water inlet end and the second water inlet end, the mixture output of described washing pool is connected with the input of solid-liquid separator by pump, the clear water output of described washing pool is connected with the input of water storage collecting pit, and the output of described water storage collecting pit is connected with the first water inlet end of washing pool by pump;
The solid output of described solid-liquid separator is connected with the 3rd flying dust warehouse by pipeline, the output of described 3rd flying dust warehouse is connected with comminutor by the first dry fly ash carry machine, and the output of described comminutor is connected with fog room by the second dry fly ash carry machine;
The fluid output port of described solid-liquid separator is connected with sewage collecting pool by pump, the output of described sewage collecting pool is connected with the water inlet end for the treatment of tank by pump, described treatment tank also comprises dilution input, the dilution input of described treatment tank is connected by the output of pump with complexing agent thinning tank, the output of described treatment tank is connected by the input of pump with brine waste evaporimeter, the output of described brine waste evaporimeter is connected with the input of water tank by pump, described water tank comprises the first water tank output, second water tank output, the water inlet end that described first water tank output is sieved by pump and electric vibrating is connected, described second water tank output is connected with the second water inlet end of washing pool by pump.
Present system comprises six processing units and accessory system, adopts the combination of " screening+solidification and stabilization+washing+potting grain " to process incineration of refuse flyash, rational in infrastructure, easy to use.
Electric vibrating mesh size of the present invention is 30 ~ 150 μm.
Accompanying drawing explanation
Fig. 1 is treatment system structural representation of the present invention.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, the present invention includes the first flying dust storage hole 1, first flying dust storage hole 1 is connected with the first flying dust warehouse 3 by elevator 2, first flying dust warehouse 3 sieves 5 by fly ash carry machine 4 with electric vibrating and is connected, the small particle diameter flying dust delivery outlet of electric vibrating sieve 5 is connected with the second flying dust warehouse 7 by small particle diameter fly ash carry machine 6, second flying dust warehouse 7 is connected with the flying dust input port of mixing roll 9 by flying dust screw feeder 8, mixing roll 9 also comprises cement input port and chelating agent input port, the cement input port of mixing roll 9 is connected with the delivery outlet of cement storage bin 11 by cement screw feeder 10, the chelating agent input port of mixing roll 9 is connected by the output of pump with chelating agent solution case 12, the output of mixing roll 9 is connected with press-forming machine 14 by maintenance conveyer 13, press-forming machine 14 stores up hole 16 by horizontal annular conveyer 15 and the second flying dust and is connected.
The Large stone flying dust delivery outlet of electric vibrating sieve 5 is connected with washing pool 18 by Large stone fly ash carry machine 17, washing pool 18 comprises mixture output, clear water output, the first water inlet end and the second water inlet end, the mixture output of washing pool 18 is connected by the input of pump with solid-liquid separator 19, the clear water output of washing pool 18 is connected with the input of water storage collecting pit 20, and the output of water storage collecting pit 20 is connected with the first water inlet end of washing pool 18 by pump.
The solid output of solid-liquid separator 19 is connected with the 3rd flying dust warehouse 21 by pipeline; the output of the 3rd flying dust warehouse 21 is connected with comminutor 23 by the first dry fly ash carry machine 22, and the output of comminutor 23 is connected with fog room 24 by the second dry fly ash carry machine 30.
The fluid output port of solid-liquid separator 19 is connected with sewage collecting pool 25 by pump, the output of sewage collecting pool 25 is connected by the water inlet end of pump with treatment tank 26, treatment tank 26 also comprises dilution input, the dilution input for the treatment of tank 26 is connected by the output of pump with complexing agent thinning tank 27, the output for the treatment of tank 26 is connected by the input of pump with brine waste evaporimeter 28, the output of brine waste evaporimeter 28 is connected by the input of pump with water tank 29, water tank 29 comprises the first water tank output, second water tank output, the water inlet end that first water tank output sieves 5 by pump and electric vibrating is connected, second water tank output is connected with the second water inlet end of washing pool 18 by pump.
The processing method implemented by system for handling is as shown in Figure 1:
1) flying dust stores up hole feeding first flying dust warehouse by elevator from the first flying dust.
2) flying dust is quantitatively transported in electric vibrating sieve by the first flying dust warehouse by fly ash carry machine, by pump, flying dust is mixed with water in water tank simultaneously, the moisture content of original flying dust is 10 ~ 40%, wet screening in vibratory sieve, vibratory sieve pore size scope is 38 μm, forms granule flying dust and bulky grain flying dust.
3) the granule flying dust after bolting enters mixing roll with cement with mass ratio 8:1 and mixes, add the chelating agent of gross mass 0.5wt% simultaneously, mix in mixing roll, the heavy metal class in flying dust and chelating agent react, and generate chelate thus stabilized.
4) from the flying dust after mixing roll out stabilized, drop on that maintenance conveyer enters press-forming machine is compressing.
5) the stable compound maintenance 0.5h on horizontal annular conveyer after compressing, completes cement initial set process.
6) the cement solidification thing of preliminary condensation is sent to the second flying dust storage hole, degree of depth maintenance 2 days.
7) last, be transported to appointed place landfill with grab bucket entrucking.
8) step 2) in bulky grain flying dust after bolting and the aqueous solution mix in washing pool with quality 1:8, repeatedly wash 3 postprecipitations, supernatant enters into water storage collecting pit, and solidliquid mixture enters into solid-liquid separator.
9) in solid-liquid separator, be separated and form solidfied material and liquid, wherein liquid enters in treatment tank through sewage collecting pool.
10) until sewage in treatment tank reach a certain amount of after, in treatment tank, add 0.5wt% heavy metal complexing agent make heavy metal precipitation.
11) by heavy metal complex stabilisation landfill after filtering, the aqueous solution enters evaporation process in brine waste evaporimeter, forms distilled water and salt.
12) distilled water after evaporimeter process is entered into water tank, salt is recycled.
13) solidfied material in step 9) after solid-liquid separator is separated enters into the dry 2h of the 3rd flying dust warehouse.
14) dried solidfied material enters comminutor extruder grain, forms shaping haydite stock.
15) shaping haydite blank is sent in fog room by conveying equipment and is carried out constant-temperature moisture-keeping maintaining 5 days, and finished product is sent to stockyard temporary reservoir, rear recycling.
After the process of the present embodiment system, chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 89.12%, can reach the regulation to various tenor in " consumer waste incineration Environmental capacity standard " (GB18485-2014) after heavy metal chelating in granule flying dust is stable, the flying dust residue resourcebility after process utilizes.
Embodiment two:
With embodiment one, only there is the difference in parameter in the present embodiment processing architecture, treatment step:
Step 2) in original flying dust moisture content be 10%, vibratory sieve pore size scope is 45 μm.
In step 3), small particle diameter flying dust and cement are with mass ratio 10:1.
In step 5), on horizontal annular conveyer, curing time is 1h.
In step 8), bulky grain flying dust and aqueous solution mass ratio are 1:10, and washing times is 5 times repeatedly.
After the present embodiment process, the chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 85.09%, and incineration of refuse flyash leachability reaches standard.
Embodiment three:
With embodiment one, only there is the difference in parameter in the present embodiment processing architecture, treatment step:
Step 2) in original flying dust moisture content be 25%, vibratory sieve pore size scope is 70 μm.
In step 3), small particle diameter flying dust and cement are with mass ratio 15:1.
In step 5), on horizontal annular conveyer, curing time is 2h.
In step 8), bulky grain flying dust and aqueous solution mass ratio are 1:15, and washing times is 5 times repeatedly.
After the present embodiment process, the chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 90.75%, and incineration of refuse flyash leachability reaches standard.
Embodiment four:
With embodiment one, only there is the difference in parameter in the present embodiment processing architecture, treatment step:
Step 2) in original flying dust moisture content be 20 ~ 35%, vibratory sieve pore size scope is 90 μm.
In step 3), small particle diameter flying dust and cement are with mass ratio 8:1.
In step 5), on horizontal annular conveyer, curing time is 2h.
In step 6), degree of depth curing time is 5 days.
After the present embodiment process, the chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 80.43%, and incineration of refuse flyash leachability reaches standard.
Embodiment five:
With embodiment one, only there is the difference in parameter in the present embodiment processing architecture, treatment step:
Step 2) in original flying dust moisture content be 7%, vibratory sieve pore size scope is 120 μm.
In step 3), small particle diameter flying dust and cement are with mass ratio 15:1, and the meeting amount mark of chelating agent is the 1wt% of gross mass.
In step 5), on horizontal annular conveyer, curing time is 2h.
In step 6), degree of depth curing time is 5 days.
In step 8), bulky grain flying dust and aqueous solution mass ratio are 1:15, and washing times is 5 times repeatedly.
After the present embodiment process, the chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 79.68%, and incineration of refuse flyash leachability reaches standard.
Embodiment six:
With embodiment one, only there is the difference in parameter in the present embodiment processing architecture, treatment step:
Step 2) in original flying dust moisture content be 35 ~ 50%, vibratory sieve pore size scope is 145 μm.
The meeting amount mark of step 3) chelating agent is the 1wt% of gross mass.
In step 5), on horizontal annular conveyer, curing time is 2h.
In step 6), degree of depth curing time is 5 days.
In step 8), bulky grain flying dust and the aqueous solution are with quality 1:15, and washing times is 5 times repeatedly.
After the present embodiment process, the chlorine element in the bulky grain flying dust that domestic garbage incineration flyash is separated and the clearance of heavy metal can reach 75.02%, and incineration of refuse flyash leachability reaches standard.
Claims (9)
1. the processing method of one way of life incineration of refuse flyash, is characterized in that comprising following treatment step:
Screening: mixed with water by the flying dust after consumer waste incineration, forms granule flying dust and bulky grain flying dust by wet screening;
Fixing-stable: by the granule flying dust that formed in step 1) and cement mixing, add chelating agent, the heavy metal class in granule flying dust and chelating agent react simultaneously, generates chelate thus stabilized;
Maintenance: suppressed by the flying dust after stabilisation, forms cement solidification thing, carries out maintenance to the cement solidification thing after compressing;
Degree of depth maintenance: the cement solidification thing tentatively condensed is carried out degree of depth maintenance;
Landfill: by the cement solidification thing security landfill after degree of depth maintenance;
Repeatedly wash: by the bulky grain flying dust elder generation that formed in step 1) and aqueous solution, by repeatedly washing, precipitating, form supernatant and solidliquid mixture;
Separation of Solid and Liquid: solidliquid mixture is separated and forms solidfied material and liquid;
Precipitation of heavy metals: liquid reach a certain amount of after, add heavy metal complexing agent and make heavy metal precipitation, by heavy metal stabilization landfill after filtration;
Evaporation process: the liquid of solid-liquid separation is carried out evaporation process, obtains distilled water and salt;
Dry: drying is carried out to the solidfied material formed in step 7);
Extruder grain: carry out extruder grain to dried solidfied material, forms shaping haydite blank;
Constant-temperature moisture-keeping maintaining: to shaping haydite blank constant-temperature moisture-keeping maintaining.
2. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: the flying dust after the consumer waste incineration in step 1) and the mixing ratio of water are 1: 5 ~ 20.
3. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: step 2) in small particle diameter flying dust and the mass ratio of cement be 15 ~ 8: 1, chelating agent gross mass is 0.1 ~ 1.0wt%.
4. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: the curing time in step 3) is 0.5 ~ 2h.
5. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: the degree of depth curing time in step 4) is 1 ~ 5 day.
6. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: the bulky grain flying dust in step 6) and aqueous solution mass ratio are 1: 5 ~ 20, and washing times is 2 ~ 5 times.
7. the processing method of one way of life incineration of refuse flyash according to claim 1, is characterized in that: the heavy metal complexing agent addition in step 8) accounts for 0.1 ~ 3% of gross mass.
8. the system for the treatment of domestic garbage incineration flyash of method as claimed in claim 1, it is characterized in that: comprise the first flying dust storage hole, described first flying dust storage hole is connected with the first flying dust warehouse by elevator, described first flying dust warehouse is sieved with electric vibrating by fly ash carry machine and is connected, the small particle diameter flying dust delivery outlet of described electric vibrating sieve is connected with the second flying dust warehouse by small particle diameter fly ash carry machine, described second flying dust warehouse is connected with the flying dust input port of mixing roll by flying dust screw feeder, described mixing roll also comprises cement input port and chelating agent input port, the cement input port of described mixing roll is connected with the delivery outlet of cement storage bin by cement screw feeder, the chelating agent input port of described mixing roll is connected by the output of pump with chelating agent solution case, the output of described mixing roll is connected with press-forming machine by maintenance conveyer, described press-forming machine stores up to cheat with the second flying dust by horizontal annular conveyer and is connected,
The Large stone flying dust delivery outlet of described electric vibrating sieve is connected with washing pool by Large stone fly ash carry machine, described washing pool comprises mixture output, clear water output, the first water inlet end and the second water inlet end, the mixture output of described washing pool is connected with the input of solid-liquid separator by pump, the clear water output of described washing pool is connected with the input of water storage collecting pit, and the output of described water storage collecting pit is connected with the first water inlet end of washing pool by pump;
The solid output of described solid-liquid separator is connected with the 3rd flying dust warehouse by pipeline, the output of described 3rd flying dust warehouse is connected with comminutor by the first dry fly ash carry machine, and the output of described comminutor is connected with fog room by the second dry fly ash carry machine;
The fluid output port of described solid-liquid separator is connected with sewage collecting pool by pump, the output of described sewage collecting pool is connected with the water inlet end for the treatment of tank by pump, described treatment tank also comprises dilution input, the dilution input of described treatment tank is connected by the output of pump with complexing agent thinning tank, the output of described treatment tank is connected by the input of pump with brine waste evaporimeter, the output of described brine waste evaporimeter is connected with the input of water tank by pump, described water tank comprises the first water tank output, second water tank output, the water inlet end that described first water tank output is sieved by pump and electric vibrating is connected, described second water tank output is connected with the second water inlet end of washing pool by pump.
9. the system for the treatment of domestic garbage incineration flyash according to claim 8, is characterized in that: described electric vibrating mesh size is 30 ~ 150 μm.
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| CN110479745A (en) * | 2019-09-25 | 2019-11-22 | 清华大学 | Flying dust processing equipment and its method |
| CN111515225A (en) * | 2020-04-28 | 2020-08-11 | 南方科技大学 | Method for treating waste incineration fly ash |
| CN111905535A (en) * | 2020-09-04 | 2020-11-10 | 北京首创环境科技有限公司 | Household garbage incineration fly ash source reduction treatment system and method |
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