A treatment method and application of waste incineration fly ash

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

[0001] The invention belongs to the field of garbage fly ash treatment, and in particular relates to a treatment method and application of garbage incineration fly ash. Background technique

[0002] At present, more and more methods of urban waste disposal are incineration. The advantage of incineration is that it greatly reduces the volume of waste and reduces the pollution of waste to the environment. However, the biggest problem is how to deal with the fly ash after incineration. The existing method of processing by cement curing often results in the need for a large amount of land occupied by the cured cement. In my country, incineration ash is divided into slag and fly ash. Slag refers to the product remaining on the hearth after combustion, while fly ash refers to the residue collected in the air pollution control system (APC). Internationally, ash is generally divided into three categories according to its collection source: bottom ash, flue gas puri...

Examples

Embodiment 1

[0031] A processing method for incineration fly ash, the steps of which are:

[0032] A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 3:2.5:1:13, mix and stir them to obtain coagulant; the stirring time is 5-10 min;

[0033] B Select 40 parts by mass of water to be placed in the reaction vessel, then add 17 parts by mass of sodium silicate, 15 parts by mass of diatomaceous earth, 5 parts by mass of pyrrole and 5 parts by mass of ethylenediaminetetraacetic acid to the water Disodium is stirred while adding to obtain the first mixed solution; the stirring time in step B is 8-20min;

[0034] C Select 10 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, and then add 5-15 parts by mass of activated carbon (activated carbon is the activated carbon described in Example 1 of the application text of Patent No. 201310221064X) , 18 parts of disodium methylene dinaphthalene sulfonate, 1 part of...

Embodiment 2

[0040] A processing method for incineration fly ash, the steps of which are:

[0041]A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 2:3:1:10, mix and stir them to obtain coagulant; the stirring time is 5-10 min;

[0042] B Select 53 parts by mass of water to be placed in the reaction vessel, then add 10 parts by mass of sodium silicate, 20 parts by mass of diatomaceous earth, 2 parts by mass of pyrrole and 15 parts by mass of ethylenediaminetetraacetic acid to the water Disodium is stirred while adding to obtain the first mixed solution; the stirring time in step B is 8-20min;

[0043] C Select 8 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, and then add 15 parts by mass of activated carbon ((activated carbon is the activated carbon described in Example 2 of the application text with patent number 201310221064X)) , 13 parts of disodium methylene dinaphthalene sulfonate, 4 parts...

Embodiment 3

[0050] A processing method for incineration fly ash, the steps of which are:

[0051] A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 4:2:1:15, mix and stir them, and the stirring time is 5-10 min; obtain coagulant;

[0052] B Select 48 parts by mass of water to be placed in the reaction vessel, then add 15 parts by mass of sodium silicate, 18 parts by mass of diatomaceous earth, 3 parts by mass of pyrrole and 10 parts by mass of ethylenediaminetetraacetic acid to the water Disodium, stirring while adding, the stirring time is 8-20min; obtain the first mixed solution;

[0053] C Select 9 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, then add 11 parts by mass of activated carbon, 15 parts of disodium methylene dinaphthalenesulfonate, 3 parts of borax and 2 parts of gelatin , stirring to obtain the second mixed solution, the stirring time is 10-25min;

[0054] D Stirring while he...

technical field

[0001] The invention belongs to the field of garbage fly ash treatment, and in particular relates to a treatment method and application of garbage incineration fly ash. Background technique

[0002] At present, more and more methods of urban waste disposal are incineration. The advantage of incineration is that it greatly reduces the volume of waste and reduces the pollution of waste to the environment. However, the biggest problem is how to deal with the fly ash after incineration. The existing method of processing by cement curing often results in the need for a large amount of land occupied by the cured cement. In my country, incineration ash is divided into slag and fly ash. Slag refers to the product remaining on the hearth after combustion, while fly ash refers to the residue collected in the air pollution control system (APC). Internationally, ash is generally divided into three categories according to its collection source: bottom ash, flue gas puri...

Examples

Embodiment 1

[0031] A processing method for incineration fly ash, the steps of which are:

[0032] A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 3:2.5:1:13, mix and stir them to obtain coagulant; the stirring time is 5-10 min;

[0033] B Select 40 parts by mass of water to be placed in the reaction vessel, then add 17 parts by mass of sodium silicate, 15 parts by mass of diatomaceous earth, 5 parts by mass of pyrrole and 5 parts by mass of ethylenediaminetetraacetic acid to the water Disodium is stirred while adding to obtain the first mixed solution; the stirring time in step B is 8-20min;

[0034] C Select 10 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, and then add 5-15 parts by mass of activated carbon (activated carbon is the activated carbon described in Example 1 of the application text of Patent No. 201310221064X) , 18 parts of disodium methylene dinaphthalene sulfonate, 1 part of...

Embodiment 2

[0040] A processing method for incineration fly ash, the steps of which are:

[0041]A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 2:3:1:10, mix and stir them to obtain coagulant; the stirring time is 5-10 min;

[0042] B Select 53 parts by mass of water to be placed in the reaction vessel, then add 10 parts by mass of sodium silicate, 20 parts by mass of diatomaceous earth, 2 parts by mass of pyrrole and 15 parts by mass of ethylenediaminetetraacetic acid to the water Disodium is stirred while adding to obtain the first mixed solution; the stirring time in step B is 8-20min;

[0043] C Select 8 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, and then add 15 parts by mass of activated carbon ((activated carbon is the activated carbon described in Example 2 of the application text with patent number 201310221064X)) , 13 parts of disodium methylene dinaphthalene sulfonate, 4 parts...

Embodiment 3

[0050] A processing method for incineration fly ash, the steps of which are:

[0051] A Take calcium sulfate, sodium sulfate, calcium lignosulfonate and clay according to the mass ratio of 4:2:1:15, mix and stir them, and the stirring time is 5-10 min; obtain coagulant;

[0052] B Select 48 parts by mass of water to be placed in the reaction vessel, then add 15 parts by mass of sodium silicate, 18 parts by mass of diatomaceous earth, 3 parts by mass of pyrrole and 10 parts by mass of ethylenediaminetetraacetic acid to the water Disodium, stirring while adding, the stirring time is 8-20min; obtain the first mixed solution;

[0053] C Select 9 parts by mass of the coagulant obtained in step A and add it to the first mixed solution, then add 11 parts by mass of activated carbon, 15 parts of disodium methylene dinaphthalenesulfonate, 3 parts of borax and 2 parts of gelatin , stirring to obtain the second mixed solution, the stirring time is 10-25min;

[0054] D Stirring while he...