CN105645815A - Treatment method and application of municipal solid waste incineration fly ash - Google Patents
Treatment method and application of municipal solid waste incineration fly ash Download PDFInfo
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- CN105645815A CN105645815A CN201511012473.4A CN201511012473A CN105645815A CN 105645815 A CN105645815 A CN 105645815A CN 201511012473 A CN201511012473 A CN 201511012473A CN 105645815 A CN105645815 A CN 105645815A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a treatment method and an application of municipal solid waste incineration fly ash, and belongs to the field of municipal solid waste incineration fly ash. The treatment method comprises the following steps: A. calcium sulfate, sodium sulfate, calcium lignosulfonate and clay are mixed with stirring, and a coagulant is obtained; B. sodium silicate, diatomite, pyrrole and Ethylene diamine tetraacetic acid disodium salt are added into water with stirring, and a first mixed solution is obtained; C. the coagulant is added into the first mixed solution, active carbon, disodium methylene dinaphthalenesulfonate, borax and gelatin are added into the first mixed solution in order with stirring, and a second mixed solution is obtained; D. the second mixed solution is heated to 50-70 DEG C and cooled to normal temperature, and the curing agent is obtained. E. the municipal solid waste incineration fly ash, the portland cement, cobblestones, sand, a curing agent and water are mixed with stirring, and fly ash concrete is obtained; F. the fly ash concrete is laid in concrete pouring, wherein the concrete does not require hardness, but require good water permeability. The fly ash concrete has the advantages of good water permeability, energy saving and environmental protection, and low cost; the obtained fly ash concrete can be used for repairing dams and paving cross walk, and the like, so that utilization of waste materials is effectively realized, and the problem for treating the fly ash from municipal solid waste incineration is solved.
Description
Technical field
The invention belongs to garbage flying ash process field, specifically, it relates to the treatment process of a kind of incineration of refuse flyash and application.
Background technology
Present stage, the employing burning that the method for the treatment of of urban garbage is more and more, the advantage burned is to greatly reduce the volume of rubbish, alleviate rubbish to the pollution of environment, but its greatest problem existed is how the flying dust after burning processes, the existing mode being undertaken processing by cement solidification often causes the cement after solidifying to need to take a large amount of occupation of land. Incineration residue is divided into slag and flying dust by China. Slag refers to the rear left product on siege of burning, and flying dust refers to the resistates collected and obtain at flue gas purification system (airpollutioncontrolsystem is called for short APC). In the world, lime-ash collects source by it, is generally divided into 3 classes: end ash, APC residues and mixed ash. The heterogeneous mixture that end ash is made up of slag, iron and other metal, ceramic-like fragment, glass and some other non-combustible material and the organism that do not fire. After removing large material wherein, its outward appearance is similar with gravel to mushy, light grey fine sand. Incineration of refuse flyash (APC residues) is the thin particulate matter collected by smoke eliminator, because its fine particle is more, makes it water holding capacity height, and easy frost heave is difficult compacting again, and it can be hindered effectively to utilize. In urban domestic garbage incinerator, heavy metal (Cd, the Pb of high vapour pressure, As and Hg) move with flue gas, meanwhile, in burning city domestic garbage process, heavy metal may change into metal chloride, and metal chloride has the vapour pressure higher than metal oxide and metallic element. Therefore, they are easy to enrichment in flying dust and gas phase, and the content of the heavy metal that such as Cd, Pb, Hg and As etc. belong to easily volatilization in incineration of refuse flyash is very high, and process can not cause well the seepage of heavy metal, also may threaten underground water when carrying out landfill disposal.So, the end ash very well process that waste incineration produces, and the most difficult be incineration of refuse flyash.
The treatment process of some garbage flying ashs carries out again burning (such as 101890424A), also have plenty of and prepare architectural pottery (such as 101580378A), also have simultaneously and it is applied to concrete preparation (such as 103241969A), but there is the complicated problem of construction in them, can there is hardness problem that is not enough and that easily damage, so lacking a kind of feature according to garbage flying ash to carry out treatment process targetedly.
Summary of the invention
The problem solved
The construction existed in garbage flying ash reprocessing for prior art is complicated, the material of construction made of it causes its hardness not enough owing to there is hole, the problems such as easy damage, the present invention provides treatment process and the application of a kind of incineration of refuse flyash, it is used for after treatment building dykes and dams by the garbage flying ash after burning, crossing etc., its hole existed makes it have good water-permeable, for building the surging force that dykes and dams can be alleviated water body flow and produce, make dykes and dams more firm by adding coagulating agent, energy-conserving and environment-protective of the present invention, refuse garbage flying ash is made to obtain rationally utilizing efficiently, effectively reduce the environmental stress that rubbish causes.
Technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A treatment process for flying ash, the steps include:
A is (2-4) in mass ratio: (2-3): 1:(10-15) get calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay, by its mix and blend, obtain coagulating agent;
B selects the water of 40-53 mass parts to be placed in reaction vessel, then in water, add the disodium ethylene diamine tetraacetate of the water glass of 10-17 mass parts, the diatomite of 15-20 mass parts, the pyrroles of 2-5 mass parts and 5-15 mass parts successively, stir while adding, obtain the first mixing solutions;
C selects in the steps A of 8-10 mass parts the coagulant dosage that obtains to the first mixing solutions, then adds the gac of 5-15 mass parts, 13-18 part methylene dinaphthalene disodium sulfonate, 1-4 part borax and 1-3 part gelatin successively, stirs, obtain the 2nd mixing solutions;
The 2nd mixing solutions obtained in step C is heated while stirring by D, after temperature reaches requirement, leaves standstill cooling, is cooled to normal temperature, obtains processing the solidifying agent of flying dust;
E selects the water mixing of solidifying agent and the 200-350 mass parts obtained in the stone of the silicate cement of the incineration of refuse flyash of 600 mass parts, 500-800 mass parts, 600-750 mass parts, the sand of 400-600 mass parts, the step D of 1-10 mass parts, stir, obtain flying dust concrete;
But the flying dust concrete obtained in step e is routed in the concrete placement that hardness does not require good water permeability by F.
Preferably, the churning time of described steps A is 5-10min; The described churning time in step B is 8-20min; The described churning time in step C is 10-25min.
Preferably, in described step D, temperature reaches requirement and refers to that solution temperature is heated between 50-70 DEG C.
Preferably, described gac is the patent No. is the gac described in 201310221064X.
Preferably, described sand adopts the middle sand between modulus M=3.0-2.3.
Preferably, but the building of described hardness does not require the concrete placement of good water permeability comprise section that other machineries such as river levee reparation, the laying of walkway, lawn can not roll.
Preferably, described silicate cement is the silicate cement of 325 or 425.
The application of the treatment process of above-mentioned flying ash in river levee is repaired.
Useful effect
Compared to prior art, the useful effect of the present invention is:
(1) calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay are mixed and made into coagulating agent by the present invention by a certain percentage, this coagulating agent is used for flying dust process of burning away the refuse, significantly improve coagulation effect, the flying dust concrete obtained is made not only to have good water-permeable, and there is certain compressive property, river course build, crossing laying etc. can be applied to;
(2) the present invention is by coagulating agent, water glass, diatomite, pyrroles, disodium ethylene diamine tetraacetate, gac, methylene dinaphthalene disodium sulfonate, certain mass ratio pressed by borax and gelatin, solidifying agent is made by special process hybrid process, it is mixed with flying dust of burning away the refuse obtained flying dust concrete, this flying dust concrete can not only keep its loose hole to make it have good water-permeable, avoid incineration of refuse flyash generation water-swelling simultaneously, and water glass, disodium ethylene diamine tetraacetate and gac can effectively prevent the heavy metal in incineration of refuse flyash from oozing out, and the objectionable impurities in energy adsorbed water body, to certain help that purifies water,
(3) the present invention not only solves a process difficult problem for incineration of refuse flyash, and for dykes and dams build, lawn and crossing laying etc. provide excellent material, really accomplished energy-conserving and environment-protective, utilization of waste material;
(4) the flying dust concrete that prepared by the present invention is built with dykes and dams, not only there is good water-permeable, and avoid the dykes and dams that water-swelling causes and damage, can effectively alleviate the pressure that dykes and dams are produced by water body, and water body is had certain cleaning action, effectively extend the duration of service of dykes and dams, a big feature is also had to be say that flying dust concrete is in process of setting, inside can form a large amount of holes, this hole not only good water absorption, and the root system of plant can go deep in hole, under the effect of plant, better fix river levee;
(5) wide material sources of the present invention, turn waste into wealth, and not only efficiently solve a refuse treatment difficult problem, and are other field offer quality matetrial, are applicable to extensively promoting.
Embodiment
Below by way of specific embodiment, the present invention is described further.
Embodiment 1
A treatment process for flying ash, the steps include:
A gets calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay for 3:2.5:1:13 in mass ratio, by its mix and blend, obtains coagulating agent; Churning time is 5-10min;
B selects the water of 40 mass parts to be placed in reaction vessel, then adds the disodium ethylene diamine tetraacetate of the water glass of 17 mass parts, the diatomite of 15 mass parts, the pyrroles of 5 mass parts and 5 mass parts in water successively, stirs while adding, obtain the first mixing solutions; Churning time in step B is 8-20min;
C selects the coagulant dosage obtained in the steps A of 10 mass parts to the first mixing solutions, then the gac gac described in application text embodiment 1 of 201310221064X (gac to be the patent No. be) of 5-15 mass parts, 18 parts of methylene dinaphthalene disodium sulfonates, 1 part of borax and 3 parts of gelatin are added successively, stirring, churning time is 10-25min; Obtain the 2nd mixing solutions;
The 2nd mixing solutions obtained in step C is heated while stirring by D, and heating temperatures is to after between 50-70 DEG C, leaving standstill cooling, be cooled to normal temperature, obtain processing the solidifying agent of flying dust;
E selects the water mixing of solidifying agent and 200 mass parts obtained in the stone of 325 silicate cements of the incineration of refuse flyash of 600 mass parts, 500 mass parts, 750 mass parts, the sand (sand adopts the middle sand between modulus M=3.0-2.3) of 400 mass parts, the step D of 10 mass parts, stir, obtain flying dust concrete;
The flying dust concrete obtained in step e is laid in the concrete placement being used for river levee reparation by F.
The flying dust concrete using the present invention to prepare repairs river levee, and relatively normal concrete water-permeable is better, can better resist the hydraulic pressure that dykes and dams are produced by river, avoid because water-swelling causes dykes and dams to burst apart, effectively prolongation dykes and dams duration of service, reducing the cost building dykes and dams, energy-conserving and environment-protective, turn waste into wealth; Especially the flying dust concrete formed forms a large amount of holes in process of setting, the root system of the plant of river levee plantation can be deep in hole, soil erosion can be prevented greatly, its hole is formed simultaneously so that river levee itself has water storage function as sponge, is monitored by quality of river water after 1 month, soil erosion situation relatively history contemporaneous data, water lose rate is only the 15% of history contemporaneous data, successful, finds that the dykes and dams that quality of river water is relatively built with normal concrete are limpider simultaneously. If road surface being built into honeycombed or leaving multiple rectangle vacant lot. These vacant lots are planted water stone banyan, willow leaf hardwood nanmu, water Portugal, wax jambo, Punetree, sinocalamus latiflorus, green bark bamboo, China tree, Chinese tallow tree, Hupeh Bauhinia Root and the yellow rose of Sharon. These plants are in process of growth, root system can penetrate plant hole, impel together with plant, flying dust concrete be organically combined in soil, can effectively avoid soil erosion, so according to the method for the present invention, it is possible to but it is applied to building of hardness do not require the concrete placement of good water permeability to comprise section that other machineries such as river levee reparation, the laying of walkway, lawn can not roll.
Embodiment 2
A treatment process for flying ash, the steps include:
A gets calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay for 2:3:1:10 in mass ratio, by its mix and blend, obtains coagulating agent; Churning time is 5-10min;
B selects the water of 53 mass parts to be placed in reaction vessel, then adds the disodium ethylene diamine tetraacetate of the water glass of 10 mass parts, the diatomite of 20 mass parts, the pyrroles of 2 mass parts and 15 mass parts in water successively, stirs while adding, obtain the first mixing solutions; Churning time in step B is 8-20min;
C selects the coagulant dosage obtained in the steps A of 8 mass parts to the first mixing solutions, then the gac (gac described in application text embodiment 2 of 201310221064X (gac to be the patent No. be)) of 15 mass parts, 13 parts of methylene dinaphthalene disodium sulfonates, 4 parts of boraxs and 1 part of gelatin is added successively, stir, churning time is 10-25min, obtains the 2nd mixing solutions;
The 2nd mixing solutions obtained in step C is heated while stirring by D, after temperature reaches requirement, leaves standstill cooling, is cooled to normal temperature, obtains processing the solidifying agent of flying dust; Churning time is 10-25min;
E selects the water mixing of solidifying agent 350 mass parts obtained in the stone of 325 silicate cements of the incineration of refuse flyash of 600 mass parts, 800 mass parts, 600 mass parts, the sand (sand adopts the middle sand between modulus M=3.0-2.3) of 600 mass parts, the step D of 1 mass parts, stir, obtain flying dust concrete;
The flying dust concrete obtained in step e is laid in the concrete placement being used for crossing laying by F.
But flying dust concrete may be used for building of hardness do not require the concrete placement of good water permeability to comprise section that other machineries such as river levee reparation, the laying of walkway, lawn can not roll.
The flying dust concrete using the present invention to prepare repairs river levee, and relatively normal concrete water-permeable is better, can better resist the hydraulic pressure that dykes and dams are produced by river, avoid because water-swelling causes dykes and dams to burst apart, effectively prolongation dykes and dams duration of service, reducing the cost building dykes and dams, energy-conserving and environment-protective, turn waste into wealth; Especially the flying dust concrete formed forms a large amount of holes in process of setting, the root system of the plant of river levee plantation can be deep in hole, soil erosion can be prevented greatly, its hole is formed simultaneously so that river levee itself has water storage function as sponge, is monitored by quality of river water after 1 month, soil erosion situation relatively history contemporaneous data, water lose rate is only the 15% of history contemporaneous data, successful, finds that the dykes and dams that quality of river water is relatively built with normal concrete are limpider simultaneously. If road surface being built into honeycombed or leaving multiple rectangle vacant lot. These vacant lots are all planted in water stone banyan, willow leaf hardwood nanmu, water Portugal, wax jambo, Punetree, sinocalamus latiflorus, green bark bamboo, China tree, Chinese tallow tree, Hupeh Bauhinia Root and the yellow rose of Sharon. These plants are in process of growth, and root system can penetrate plant hole, impel together with plant, flying dust concrete be organically combined in soil, it is possible to effectively avoiding soil erosion, plant growth rate speeds simultaneously.
Embodiment 3
A treatment process for flying ash, the steps include:
A gets calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay for 4:2:1:15 in mass ratio, and by its mix and blend, churning time is 5-10min; Obtain coagulating agent;
B selects the water of 48 mass parts to be placed in reaction vessel, then in water, add the disodium ethylene diamine tetraacetate of the water glass of 15 mass parts, the diatomite of 18 mass parts, the pyrroles of 3 mass parts and 10 mass parts successively, stirring while adding, churning time is 8-20min; Obtain the first mixing solutions;
C selects the coagulant dosage obtained in the steps A of 9 mass parts to the first mixing solutions, then the gac of 11 mass parts, 15 parts of methylene dinaphthalene disodium sulfonates, 3 parts of boraxs and 2 parts of gelatin are added successively, stirring, obtain the 2nd mixing solutions, churning time is 10-25min;
The 2nd mixing solutions obtained in step C is heated while stirring by D, after temperature reaches requirement, leaves standstill cooling, is cooled to normal temperature, obtains processing the solidifying agent of flying dust;
E selects the water mixing of solidifying agent and 290 mass parts obtained in the stone of 425 silicate cements of the incineration of refuse flyash of 600 mass parts, 650 mass parts, 700 mass parts, the sand of 500 mass parts, the step D of 6 mass parts, stirs, obtains flying dust concrete;
The flying dust concrete obtained in step e is laid in the concrete placement being used for lawn laying by F.
But flying dust concrete may be used for building of hardness do not require the concrete placement of good water permeability to comprise section that other machineries such as river levee reparation, the laying of walkway, lawn can not roll.
The flying dust concrete using the present invention to prepare repairs river levee, and relatively normal concrete water-permeable is better, can better resist the hydraulic pressure that dykes and dams are produced by river, avoid because water-swelling causes dykes and dams to burst apart, effectively prolongation dykes and dams duration of service, reducing the cost building dykes and dams, energy-conserving and environment-protective, turn waste into wealth;Especially the flying dust concrete formed forms a large amount of holes in process of setting, the root system of the plant of river levee plantation can be deep in hole, soil erosion can be prevented greatly, its hole is formed simultaneously so that river levee itself has water storage function as sponge, is monitored by quality of river water after 1 month, soil erosion situation relatively history contemporaneous data, water lose rate is only the 15% of history contemporaneous data, successful, finds that the dykes and dams that quality of river water is relatively built with normal concrete are limpider simultaneously. If road surface being built into honeycombed or leaving multiple rectangle vacant lot. These vacant lots can be planted in water stone banyan, willow leaf hardwood nanmu, water Portugal, wax jambo, Punetree, sinocalamus latiflorus, green bark bamboo, China tree, Chinese tallow tree, Hupeh Bauhinia Root and the yellow rose of Sharon one or any several. These plants are in process of growth, and root system can penetrate plant hole, impel together with plant, flying dust concrete be organically combined in soil, it is possible to effectively avoid soil erosion. The flying dust concrete using the present invention to prepare is laid for lawn, owing to it has good water-permeable, certain water yield can be stored, be conducive to the growth on lawn, save the number of times of lawn pouring, not only lay with low cost, and effectively save human cost, it is achieved real turns waste into wealth, the object of energy-conserving and environment-protective, not only solve a difficult problem for flying ash process, also for the material of the super quality and competitive price provided is laid on lawn.
Claims (8)
1. a treatment process for flying ash, the steps include:
A is (2-4) in mass ratio: (2-3): 1:(10-15) get calcium sulfate, sodium sulfate, calcium lignin sulphonate and clay, by its mix and blend, obtain coagulating agent;
B selects the water of 40-53 mass parts to be placed in reaction vessel, then in water, add the disodium ethylene diamine tetraacetate of the water glass of 10-17 mass parts, the diatomite of 15-20 mass parts, the pyrroles of 2-5 mass parts and 5-15 mass parts successively, stir while adding, obtain the first mixing solutions;
C selects in the steps A of 8-10 mass parts the coagulant dosage that obtains to the first mixing solutions, then adds the gac of 5-15 mass parts, 13-18 part methylene dinaphthalene disodium sulfonate, 1-4 part borax and 1-3 part gelatin successively, stirs, obtain the 2nd mixing solutions;
The 2nd mixing solutions obtained in step C is heated while stirring by D, after temperature reaches requirement, leaves standstill cooling, is cooled to normal temperature, obtains processing the solidifying agent of flying dust;
E selects the water mixing of solidifying agent and the 200-350 mass parts obtained in the stone of the silicate cement of the incineration of refuse flyash of 600 mass parts, 500-800 mass parts, 600-750 mass parts, the sand of 400-600 mass parts, the step D of 1-10 mass parts, stir, obtain flying dust concrete;
But the flying dust concrete obtained in step e is routed in the concrete placement that hardness does not require good water permeability by F.
2. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: the churning time of described steps A is 5-10min; The described churning time in step B is 8-20min; The described churning time in step C is 10-25min.
3. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: in described step D, temperature reaches requirement and refers to that solution temperature is heated between 50-70 DEG C.
4. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: described gac is the patent No. is the gac described in 201310221064X.
5. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: described sand adopts the middle sand between modulus M=3.0-2.3.
6. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: but the building of described hardness does not require the concrete placement of good water permeability comprise section that other machineries such as river levee reparation, the laying of walkway, lawn can not roll.
7. the treatment process of a kind of flying ash according to claim 1, it is characterised in that: described silicate cement is the silicate cement of 325 or 425.
8. the treatment process of flying ash according to claim 1 river levee repair in application.
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| CN111517711A (en) * | 2020-05-13 | 2020-08-11 | 江苏启坤循环经济产业技术开发有限公司 | Method for preparing dry-mixed mortar by using waste residue solidified fly ash |
| CN113402217A (en) * | 2021-05-28 | 2021-09-17 | 合肥学院 | Waste incineration power generation fly ash solidification method |
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| CN113402217A (en) * | 2021-05-28 | 2021-09-17 | 合肥学院 | Waste incineration power generation fly ash solidification method |
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