CN101121578A - Reclaiming treatment method for refuse burning fly ash - Google Patents

Reclaiming treatment method for refuse burning fly ash Download PDF

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Publication number
CN101121578A
CN101121578A CNA2007101187123A CN200710118712A CN101121578A CN 101121578 A CN101121578 A CN 101121578A CN A2007101187123 A CNA2007101187123 A CN A2007101187123A CN 200710118712 A CN200710118712 A CN 200710118712A CN 101121578 A CN101121578 A CN 101121578A
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CN
China
Prior art keywords
incineration
refuse flyash
stone
forming agent
coagulating
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Pending
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CNA2007101187123A
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Chinese (zh)
Inventor
倪文
张玉燕
谭园园
刘凤梅
丁曼
张真
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Priority to CNA2007101187123A priority Critical patent/CN101121578A/en
Publication of CN101121578A publication Critical patent/CN101121578A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10—Burned or pyrolised refuse
    • C04B18/105—Gaseous combustion products or dusts collected from waste incineration, e.g. sludge resulting from the purification of gaseous combustion products of waste incineration
    • C04B18/106—Fly ash from waste incinerators
    • 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
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

The present invention relates to a method with resource to treat the flying ash of the firing rubbish; the method is characterized in that: the method takes the flying ash of the firing rubbish as the raw material for producing coagulating rock and stone; according to the component of the flying ash of the firing rubbish, the occupied molar percent for the flying ash of the firing rubbish in the coagulating rock and stone is between 1 percent and 10 percent. The rock after being prepared is used for producing coagulating stone glue; the occupied molar percent for the coagulating rock and stone in the coagulating stone glue is 1-5 percent; the coagulating stone glue is also used for producing coagulating concrete; the occupied molar percent for the coagulating stone glue and stone in the coagulating concrete is 10-25 percent; being diluted level after level, the molar percent of the flying ash of the firing rubbish in the coagulating concrete is 0.01-1.25%, i.e. the flying ash of the firing rubbish is diluted into 800 times to 100000 times. The content of the heavy metal and bad quartz in the coagulating concrete is lower than the background value of the soil so as not to pollute the environment; the method can eliminate the damage brought from the flying ash of the firing rubbish, and make the flying ash of the firing rubbish treated with resource mode.

Description

A kind of method of disposal of resources incineration of refuse flyash
Technical field:
The invention belongs to field of environmental engineering, particularly a kind of method of disposal of resources incineration of refuse flyash.
Background technology:
The domestic waste of world developed country is many to be disposed in the mode of burning, and China is main mode with the landfill disposal then.Along with the raising of Chinese big city resident living level and the raising of urban modernization degree, the Urban Rubbish Disposal of China is in from being main to the transitional period based on burning with the landfill.If the municipal wastes in the whole nation has 50% to adopt incinerating method to dispose, the then annual incineration of refuse flyash that can produce 50～1,000,000 tons.
Because a large amount of Dioxins and heavy metal can enrichments in flying dust in the waste incineration process, therefore all incineration of refuse flyash disposed as dangerous solid waste both at home and abroad.The solubility salt generally accounts for 10%～25% in the incineration of refuse flyash, is mainly muriate, vitriol, carbonate etc.Contain the heavy metal element that is higher than soil background far away in the flying dust, mainly contain Pb, Zn, Cu, Cr, Cd, As, Hg etc. and think the element bigger at present human body hazardness.At present also there is not clear understanding tangible enrichment also to be arranged to Ba, Be, Co, Ni, the elements such as Sb, Ag of hazardness.Wherein the enrichment degree of elements such as Zn, Pb, Cr is the highest, generally can reach 500～5000mg/kg, reaches as high as more than the 50000mg/kg, is equivalent to more than 500 times of soil one-level ambient quality standard.
The dioxin-like chemical of institute's enrichment is the strongest material of incineration of refuse flyash toxic in the incineration of refuse flyash.Its content reaches as high as more than the 10ngTEQ/g generally at 0.98～4.5ngTEQ/g, is more than 100 times of general soil background value.
Technology such as landfill again after landfill, the cement solidification again after the method for disposing at present both at home and abroad incineration of refuse flyash mainly contains and concentrates sealing landfill, vitreous state to solidify.Zhong Guo some garbage burning factories carried out incineration of refuse flyash to add a part of clay baking ceramsite again after certain pre-treatment in recent years, as the raw material of energy saving building material.
Except being used for baking ceramsite, all fail incineration of refuse flyash is carried out recycling in the above-mentioned method of disposal.Being used for baking ceramsite then needs incineration of refuse flyash is tentatively removed the processing of lyotropic salt, otherwise volume is very limited or causes that post-order process is not smooth.Because a large amount of potassium, sodium ion can concentrate on some position of kiln in the sintering procedure of haydite, the corrosion furnace construction, and cause secondary enrichment in haydite incinerating flying dust.
Summary of the invention
The present invention seeks to utilize and coagulate the stone technical system, adopt and disperse and solidify principle of combining to make the useful component in the incineration of refuse flyash obtain high-value-use to greatest extent, thereby realize the resource utilization of incineration of refuse flyash.
Coagulate the stone technical system at present and be tending towards ripe.The production of coagulating stone is to utilize to have the solid waste of pozzolanic activity, comprise flyash, metallurgical slag, coal gangue, oil shale waste, pretreated sal materials such as mine tailing, the Yellow River sand, urban architecture rubbish and natural volcanic ash, add and add cement clinker on a small quantity or not, allocate 1%～5% rock forming agent again into, through respectively levigate be mixed again or together the mix grinding prepared form the sial based cementitious material that can use in many occasion place of cement.Coagulate stone and be based on the sial based cementitious material that imitative ground diagenesis principle is prepared from.The core of coagulating imitative ground of stone diagenesis theory is a "One Center", " two effects ", i.e. " silicon center stable theory ", " the four-coordination isomorphism effect of silicon " and " complicated many components of diagenesis fluid synergistic effect ".In the process of coagulating the glued sclerosis formation of stone glued stone concrete, owing to containing the complicated diagenesis fluid that the common formation of many components salt and initial stage dissolved main body sial material has many components synergistic effect in the rock forming agent, promote the quick depolymerization of sial network in the sial material on the one hand; On the other hand because silicon to the four-coordination isomorphism effect of aluminium and other trivalent and pentad, makes active, divalent ion in the diagenesis fluid progressively be fixed in the defective of sial network body with the balance electricity price.Therefore, glued stone concrete not only has the curing one stronger than ordinary Portland cement concrete, bivalent ions ability, also have than better chemical stability of ordinary Portland cement concrete and physical stability, its Synthesis durability in the common acid of nature, alkaline environment and neutral environment is higher more than 10 times than cement concrete.
Coagulate stone has formed tens production lines and millions of ton/years in China industrial scale at present.The production model of coagulating stone be rock forming agent by the relative centralized production of special factory, and transport with fixed attention that stone factory and main body sial material mix grinding produce travertine gelled material to.These travertine gelled materials are resaled and are made concrete or be sold to other building material factories production material of construction (as mortar, stripping and slicing etc.) to concrete mixing plant.
Based on the physical chemistry characteristics of incineration of refuse flyash itself and the technical system of existing travertine gelled material and glued stone concrete production, the present invention proposes following method of incineration of refuse flyash being carried out disposal of resources:
At first incineration of refuse flyash is transported to the production plant of coagulating the stone rock forming agent and coagulate the raw material of stone rock forming agent as production, composition to incineration of refuse flyash carries out chemical analysis then, according to the composition of incineration of refuse flyash, incineration of refuse flyash ingredients by weight per-cent in coagulating the stone rock forming agent is 1%～10%.Incineration of refuse flyash has obtained 10 to 100 times dilution in coagulating the stone rock forming agent like this.
Aforesaid incineration of refuse flyash is to be used for replacing the industrial chemicals of stone rock forming agent with fixed attention.Substitution technique is: replace with identical chemical ingredients equivalent.For example, when incineration of refuse flyash was coagulating that ingredients by weight per-cent is 5% in the stone rock forming agent, if contain 30% CaO in the incineration of refuse flyash, the amount that then replaces CaO in the former rock forming agent was: 30% * 5%=1.5%; If contain 9% NaCl in the incineration of refuse flyash, the NaCl amount that then replaces in the former rock forming agent is: 9% * 5%=0.45%; If contain 6% KCl in the incineration of refuse flyash, the KCl amount that then replaces in the former rock forming agent is: 6% * 5%=0.30%; The rest may be inferred for other compositions.
Transport the rock forming agent for preparing to travertine gelled material factory.Coagulating the weight percent of stone rock forming agent in the production batching of travertine gelled material is 1%～5%.Incineration of refuse flyash shared ratio in travertine gelled material is 0.1 ‰～5 ‰ like this, has promptly obtained 200 to 10000 times dilution.
Travertine gelled material factory is sold to concrete mixing plant with product and is used to produce glued stone concrete.Travertine gelled material shared weight percent in glued stone concrete is 10%～25%, therefore the ratio of incineration of refuse flyash in glued stone concrete is 0.01 ‰～1.25 ‰, promptly be equivalent to diluted 800 times to 100000 times, make content be lower than the background value of soil therefrom, therefore can not cause any environmental pollution by toxic substances such as Dioxins that incineration of refuse flyash brought and heavy metals.The present invention is applicable to that dioxins concentration is lower than 10ngTEQ/g, and heavy metal content is not higher than the disposal of resources of the incineration of refuse flyash of 800 times of People's Republic of China's heavy metal in soil environmental quality control primary standards.
Advantage or positively effect
Owing to contain a large amount of ions that comprises heavy metal in the incineration of refuse flyash, all be the effective constituent that in the glued stone concrete process of setting, forms " complicated many components of diagenesis fluid synergistic effect ", therefore use incineration of refuse flyash instead of part expensive chemical raw material to produce stone rock forming agent with fixed attention, not only can make the raw materials cost decline 1%～10% of stone rock forming agent with fixed attention, can also keep even improve the over-all properties of glued stone concrete.Because the anti-dissolving out capability and the anti-permeability performance of glued stone concrete all are better than cement concrete, its Synthesis durability is more than 10 times of cement concrete again.Therefore, the harm that can thoroughly eliminate incineration of refuse flyash and brought.
Embodiment:
Embodiment 1
The incineration of refuse flyash that will contain heavy metal as shown in table 1 and dioxins concentration transports the factory of stone rock forming agent with fixed attention to, and 5% proportioning replaces the industrial chemicals that coagulates in the stone rock forming agent by weight percentage.Substitution technique is that main chemical ingredients replaces with identical chemical ingredients equivalent.For example, when incineration of refuse flyash was coagulating that ingredients by weight per-cent is 5% in the stone rock forming agent, if contain 30% CaO in the incineration of refuse flyash, the amount that then replaces CaO in the former rock forming agent was: 30% * 5%=1.5%; If contain 9% NaCl in the incineration of refuse flyash, the NaCl amount that then replaces in the former rock forming agent is: 9% * 5%=0.45%; If contain 6% KCl in the incineration of refuse flyash, the KCl amount that then replaces in the former rock forming agent is: 6% * 5%=0.30%; The rest may be inferred for other compositions.
The main heavy metal element among table 1 embodiment 1 in the incineration of refuse flyash and the content of Dioxins
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
6.75 24.56 39.75 892.10 2748.10 495.20 4988.50 92.43 3.75
See Table 2 coagulating in the stone rock forming agent of being produced by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins.
Coagulate main heavy metal element and the dioxins concentration of bringing into by incineration of refuse flyash in the stone rock forming agent among table 2 embodiment 1
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.34 1.23 1.99 44.61 137.41 24.76 249.43 4.62 0.19
Transport the stone rock forming agent of being produced that coagulates to travertine gelled material factory, coagulate the stone rock forming agent by weight percentage 5% add-on mix levigate production travertine gelled material with main body sial material, see Table 3 by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins in the gained travertine gelled material.
Among table 3 embodiment 1 in the travertine gelled material by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.017 0.061 0.099 2.23 6.87 1.24 12.47 0.23 0.0094
Above-mentioned travertine gelled material is mixed with the C50 glued stone concrete by 400 kilograms of travertine gelled materials of every cubic meter of concrete.The concrete density of being prepared is 2.23t/m 3, so the shared weight percent of the travertine gelled material in this concrete is 400 ÷, 2230 * 100%=17.94%.Main heavy metal element and the dioxins concentration brought into by incineration of refuse flyash in this glued stone concrete see Table 4.
Among table 4 embodiment 1 in the glued stone concrete by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.0030 0.011 0.018 0.40 1.23 0.22 2.24 0.041 0.0017
The content of main heavy metal element and Dioxins in the above-mentioned glued stone concrete and table 5 and table 6 are compared as can be known, and the content of bringing each the main heavy metal element of glued stone concrete and Dioxins into by incineration of refuse flyash all is lower than the control criterion of Dioxins in China's soil environment quality primary standard and the external several national residences soil.
Table 5 People's Republic of China (PRC) heavy metal in soil environmental quality control primary standard (mg/kg)
Cd Hg As Cu Pb Cr Zn Ni
0.20 0.15 15 35 35 90 100 40
The control criterion of Dioxins in the soil of the several typical country of table 6 residence
Country Control criterion (ngTEQ/g)
The U.S., Japan, German New Zealand Finland 1.00 1.50 0.50
Embodiment 2
The incineration of refuse flyash that will contain heavy metal as shown in table 7 and dioxins concentration transports the factory of stone rock forming agent with fixed attention to, and 10% proportioning replaces the industrial chemicals that coagulates in the stone rock forming agent by weight percentage.Substitution technique is to replace with identical chemical ingredients equivalent.For example, if contain 40% CaO in the incineration of refuse flyash, the amount that then replaces CaO in the former rock forming agent is: 40% * 10%=4%; If contain 10% NaCl in the incineration of refuse flyash, the NaCl amount that then replaces in the former rock forming agent is: 10% * 10%=1%; If contain 5% KCl in the incineration of refuse flyash, the KCl amount that then replaces in the former rock forming agent is: 5% * 10%=0.5%; The rest may be inferred for other compositions.
The main heavy metal element among table 7 embodiment 2 in the incineration of refuse flyash and the content of Dioxins
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
7.85 19.24 32.13 1085.38 2780.52 340.84 4710.72 236.42 7.28
See Table 8 coagulating in the stone rock forming agent of being produced by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins.
Coagulate main heavy metal element and the dioxins concentration of bringing into by incineration of refuse flyash in the stone rock forming agent among table 8 embodiment 2
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.79 1.92 3.21 108.54 278.05 34.08 471.07 23.64 0.73
Transport the stone rock forming agent of being produced that coagulates to travertine gelled material factory, coagulate the stone rock forming agent by weight percentage 5% add-on mix levigate production travertine gelled material with main body sial material, see Table 9 by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins in the gained travertine gelled material.
Among table 9 embodiment 2 in the travertine gelled material by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.039 0.096 0.16 5.43 13.90 1.70 23.55 1.18 0.036
Above-mentioned travertine gelled material is mixed with the C40 glued stone concrete by 370 kilograms of travertine gelled materials of every cubic meter of concrete.The concrete density of being prepared is 2.18t/m 3, so the shared weight percent of the travertine gelled material in this concrete is 370 ÷, 2180 * 100%=16.97%.Main heavy metal element and the dioxins concentration brought into by incineration of refuse flyash in this glued stone concrete see Table 10.
Among table 10 embodiment 2 in the glued stone concrete by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.0067 0.016 0.027 0.92 2.36 0.29 4.00 0.20 0.0062
The content of main heavy metal element and Dioxins in the above-mentioned glued stone concrete is compared as can be known with table 5 and table 6, and all low People's Republic of China (PRC) of the content soil environment quality of bringing each the main heavy metal element of glued stone concrete and Dioxins into by incineration of refuse flyash is controlled the control criterion of Dioxins in primary standard and the external several national residences soil.
Embodiment 3
The incineration of refuse flyash that will contain heavy metal as shown in table 11 and dioxins concentration transports the factory of stone rock forming agent with fixed attention to, and 1% proportioning replaces the industrial chemicals that coagulates in the stone rock forming agent by weight percentage, and substitution technique replaces with identical chemical ingredients equivalent.For example, if contain 50% CaO in the incineration of refuse flyash, the amount that then replaces CaO in the former rock forming agent is: 50% * 1%=0.5%; If contain 12% NaCl in the incineration of refuse flyash, the NaCl amount that then replaces in the former rock forming agent is: 12% * 1%=0.12%; If contain 7% KCl in the incineration of refuse flyash, the KCl amount that then replaces in the former rock forming agent is: 7% * 1%=0.07%; The rest may be inferred for other compositions.
The main heavy metal element among table 11 embodiment 3 in the incineration of refuse flyash and the content of Dioxins
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
345.27 34.18 43.56 2505.17 2984.32 479.28 28245.78 135.12 1.78
See Table 12 coagulating in the stone rock forming agent of being produced by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins.
Coagulate main heavy metal element and the dioxins concentration of bringing into by incineration of refuse flyash in the stone rock forming agent among table 12 embodiment 3
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
3.45 0.34 0.44 25.05 29.84 4.79 282.46 1.35 0.018
Transport the stone rock forming agent of being produced that coagulates to travertine gelled material factory, coagulate the stone rock forming agent by weight percentage 5% add-on mix levigate production travertine gelled material with main body sial material, see Table 13 by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins in the gained travertine gelled material.
Among table 13 embodiment 3 in the travertine gelled material by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.17 0.017 0.022 1.25 1.49 0.24 14.12 0.068 0.00089
Above-mentioned travertine gelled material is mixed with the C80 glued stone concrete by 480 kilograms of travertine gelled materials of every cubic meter of concrete.The concrete density of being prepared is 2.28t/m 3, so the shared weight percent of the travertine gelled material in this concrete is 480 ÷, 2280 * 100%=21.1%.Main heavy metal element and the dioxins concentration brought into by incineration of refuse flyash in this glued stone concrete see Table 14.
Among table 14 embodiment 3 in the glued stone concrete by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.036 0.0036 0.0046 0.26 0.31 0.051 2.98 0.014 0.00019
The content of main heavy metal element and Dioxins in the above-mentioned glued stone concrete is compared as can be known with table 5 and table 6, and all low People's Republic of China (PRC) of the content soil environment quality of bringing each the main heavy metal element of glued stone concrete and Dioxins into by incineration of refuse flyash is controlled the control criterion of Dioxins in primary standard and the external several national residences soil.
Embodiment 4
The incineration of refuse flyash that will contain heavy metal as shown in Table 15 and dioxins concentration transports the factory of stone rock forming agent with fixed attention to, and 5% proportioning replaces the industrial chemicals that coagulates in the stone rock forming agent by weight percentage, and substitution technique is to replace with identical chemical ingredients equivalent.For example, if contain 37% CaO in the incineration of refuse flyash, the amount that then replaces CaO in the former rock forming agent is: 37% * 5%=1.85%; If contain 14% NaCl in the incineration of refuse flyash, the NaCl amount that then replaces in the former rock forming agent is: 14% * 5%=0.70%; If contain 3% KCl in the incineration of refuse flyash, the KCl amount that then replaces in the former rock forming agent is: 3% * 5%=0.15%; The rest may be inferred for other compositions.
The heavy metal element among table 15 embodiment 4 in the incineration of refuse flyash and the content of Dioxins
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
19.75 13.23 34.51 8978.42 7868.24 672.41 13421.75 182.43 2.34
See Table 16 coagulating in the stone rock forming agent of being produced by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins.
Coagulate main heavy metal element and the dioxins concentration of bringing into by incineration of refuse flyash in the stone rock forming agent among table 16 embodiment 4
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.99 0.66 1.73 448.92 393.41 33.62 671.09 9.12 0.12
Transport the stone rock forming agent of being produced that coagulates to travertine gelled material factory, coagulate the stone rock forming agent by weight percentage 5% add-on mix levigate production travertine gelled material with main body sial material, see Table 17 by the heavy metal element that incineration of refuse flyash brought and the content of Dioxins in the gained travertine gelled material.
Among table 17 embodiment 4 in the travertine gelled material by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.049 0.033 0.086 22.45 19.67 1.68 33.55 0.46 0.0059
Above-mentioned travertine gelled material is mixed with the C30 glued stone concrete by 350 kilograms of travertine gelled materials of every cubic meter of concrete.The concrete density of being prepared is 2.13t/m 3, so the shared weight percent of the travertine gelled material in this concrete is 350 ÷, 2130 * 100%=16.43%.Main heavy metal element and the dioxins concentration brought into by incineration of refuse flyash in this glued stone concrete see Table 18.
Among table 18 embodiment 4 in the glued stone concrete by incineration of refuse flyash bring into main heavy metal element and dioxins concentration
Heavy metal (mg/kg) Dioxins ngTEQ/g
Cd Hg As Cu Pb Cr Zn Ni
0.0081 0.0054 0.014 3.69 3.23 0.28 5.51 0.075 0.00096
The content of main heavy metal element and Dioxins in the above-mentioned glued stone concrete is compared as can be known with table 5 and table 6, and all low People's Republic of China (PRC) of the content soil environment quality of bringing each the main heavy metal element of glued stone concrete and Dioxins into by incineration of refuse flyash is controlled the control criterion of Dioxins in primary standard and the external several national residences soil.

Claims (4)

1. the method for a disposal of resources incineration of refuse flyash, it is characterized in that transporting incineration of refuse flyash to the stone rock forming agent coagulates in the production plant of coagulating the stone rock forming agent as production raw material, composition to incineration of refuse flyash carries out chemical analysis earlier, according to the composition of incineration of refuse flyash, incineration of refuse flyash ingredients by weight per-cent in coagulating the stone rock forming agent is 1%～10%; Incineration of refuse flyash is to be used for replacing the industrial chemicals of stone rock forming agent with fixed attention; Substitution technique is: replace with identical chemical ingredients equivalent.
2. the method for disposal of resources incineration of refuse flyash according to claim 1, it is characterized in that the rock forming agent that will prepare transports travertine gelled material factory to, be used for the production of travertine gelled material, coagulating the weight percent of stone rock forming agent in the production batching of travertine gelled material is 1%～5%.
3. as the method for claim 2 disposal of resources incineration of refuse flyash, it is characterized in that travertine gelled material is used to produce glued stone concrete; Travertine gelled material shared weight percent in glued stone concrete is 10%～25%, therefore the ratio of incineration of refuse flyash in glued stone concrete is 0.01 ‰～1.25 ‰, promptly be equivalent to diluted 800 times to 100000 times, make content be lower than the background value of soil therefrom, therefore can not cause any environmental pollution by toxic substances such as Dioxins that incineration of refuse flyash brought and heavy metals.
4. the method for disposal of resources incineration of refuse flyash as claimed in claim 1, it is characterized in that being applicable to that dioxins concentration is lower than 10ngTEQ/g, heavy metal content is not higher than the disposal of resources of the incineration of refuse flyash of 800 times of People's Republic of China's heavy metal in soil environmental quality control primary standards.
CNA2007101187123A 2007-07-12 2007-07-12 Reclaiming treatment method for refuse burning fly ash Pending CN101121578A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102019111B (en) * 2009-09-15 2013-01-16 北京建筑材料科学研究总院有限公司 Additive for reducing moisture content of fly ash filter cakes generated from waste incineration
CN107324705A (en) * 2017-06-19 2017-11-07 中交四航工程研究院有限公司 Foam lightweight soil and roadbed that a kind of application incineration of refuse flyash is made
CN110961436A (en) * 2019-12-27 2020-04-07 湖南军信环保股份有限公司 Fly ash solidification and stabilization treatment process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102019111B (en) * 2009-09-15 2013-01-16 北京建筑材料科学研究总院有限公司 Additive for reducing moisture content of fly ash filter cakes generated from waste incineration
CN107324705A (en) * 2017-06-19 2017-11-07 中交四航工程研究院有限公司 Foam lightweight soil and roadbed that a kind of application incineration of refuse flyash is made
CN107324705B (en) * 2017-06-19 2020-01-14 中交四航工程研究院有限公司 Foamed light soil and roadbed made of waste incineration fly ash
CN110961436A (en) * 2019-12-27 2020-04-07 湖南军信环保股份有限公司 Fly ash solidification and stabilization treatment process
CN110961436B (en) * 2019-12-27 2022-02-22 湖南军信环保股份有限公司 Fly ash solidification and stabilization treatment process

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