CN111360024A - Method for deeply removing soluble components in industrial waste residue - Google Patents

Method for deeply removing soluble components in industrial waste residue Download PDF

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Publication number
CN111360024A
CN111360024A CN202010170012.4A CN202010170012A CN111360024A CN 111360024 A CN111360024 A CN 111360024A CN 202010170012 A CN202010170012 A CN 202010170012A CN 111360024 A CN111360024 A CN 111360024A
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Prior art keywords
waste residue
industrial waste
soluble components
industrial
suspension
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CN202010170012.4A
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CN111360024B (en
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钱光人
周吉峙
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Zhejiang Meishen New Material Technology Co ltd
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Zhejiang Meishen New Material Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B2101/00Type of solid waste
    • B09B2101/30Incineration ashes

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a method for deeply removing soluble components in industrial waste residue, which is characterized by comprising the following steps: adding a silicon-containing medicament into water, stirring at a high speed for 10-30 min at a temperature of 20-40 ℃, and controlling the pH value of the solution to be 10-12; step two, adding the solution obtained in the step one into a mixed solution of industrial waste residue and water to form a suspension; adding aluminum powder or hydrogen peroxide into the suspension, and stirring at a low speed of 40-80 ℃ for 30-75 min; and step four, filtering and drying the suspension liquid in the step three to obtain the industrial waste residue after the soluble components are removed. The method has wide application range, and can be suitable for the pretreatment of industrial solid wastes such as sulfur-containing waste residues, household garbage incineration fly ash, aluminum ash, salt-containing waste residues, electroplating sludge or nitrogen-containing waste residues. The obtained residue can be used as auxiliary materials for civil engineering and construction and other resource utilization ways, and is beneficial to the comprehensive utilization of waste residues.

Description

Method for deeply removing soluble components in industrial waste residue
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a method for deeply removing soluble components in industrial waste residues.
Background
Wet treatment of waste residues is a common means of promoting the reaction of solid phase components and further separating them from the waste residues. In the wet treatment process, the components such as Al, Fe, Ca and the like contained in the industrial waste residue form hydroxide in water to wrap the surface of the waste residue, so that the waste residue is agglomerated, water is prevented from entering the inside of the waste residue, pre-separation components cannot be completely removed, and the waste residue is not beneficial to subsequent utilization or treatment. The existing common methods are heating, rapid stirring, multi-stage water washing, ultrasonic stirring and the like. The treatment steps are complicated, and the reaction time is long; heating is needed, and energy consumption is large; the industrial scale application is poor, and the influence of impurities is large; the cost is high, the agglomeration treatment of the product is incomplete, the steps are multiple, and the industrialization cannot be realized; the problem of incomplete reaction cannot be solved completely.
Aiming at the problems in the prior art, the method for removing the soluble components in the waste residue is simple and quick, high in treatment efficiency and wide in adaptability.
Disclosure of Invention
The invention aims to solve the problem that the soluble component of the industrial waste residue can not be fully dissolved and thoroughly separated in the water washing process, and further provides a method for deeply removing the soluble component of the industrial waste residue.
The invention relates to a method for deeply removing soluble components in industrial waste residue, which is characterized by comprising the following steps:
adding a silicon-containing medicament into water, stirring at a high speed for 10-30 min at a temperature of 20-40 ℃, and controlling the pH value of the solution to be 10-12;
step two, adding the solution obtained in the step one into a mixed solution of industrial waste residue and water to form a suspension;
adding aluminum powder or hydrogen peroxide into the suspension, and stirring at a low speed of 40-80 ℃ for 30-75 min;
and step four, filtering and drying the suspension liquid in the step three to obtain the industrial waste residue after the soluble components are removed.
Further, in the first step, the silicon-containing agent is one of sodium silicate, silicon dioxide or methyl silicate.
Further, in the second step, the industrial waste residue is industrial solid waste, including industrial solid waste such as sulfur-containing waste residue, household garbage incineration fly ash, aluminum ash, salt-containing waste residue, electroplating sludge or nitrogen-containing waste residue.
Further, in the first step, the high-speed stirring speed is 300-400 r/min.
Further, in the second step, the mass ratio of the silicon-containing medicament to the industrial waste residue is 1: (3-5), wherein the mass ratio of the waste residue to the water is 1: (3-5).
Further, in the third step, the mass ratio of the aluminum powder or hydrogen peroxide to the industrial waste residue is 1: (50-120);
further, in the third step, the low-speed stirring speed is 50-150 r/min.
The method is suitable for separating components in sulfur-containing waste residues, household garbage incineration fly ash, aluminum ash, salt-containing waste residues, electroplating sludge or nitrogen-containing waste residues. When waste residues are washed by water, a silicon-containing agent is added, and silicate hydrosol is controllably formed under a certain pH condition, so that silica gel particles are connected with each other to form a three-dimensional network structure taking silica tetrahedron as a basic structure and are coated on the surface of waste residue particles, so that the waste residues are uniformly distributed in turbid liquid, waste residue components are completely dispersed, the contact of the waste residues and water is promoted, and the hydrolysis or dissolution of pre-separation components is guaranteed. Compared with the conventional wet treatment process, the method can realize the complete separation of soluble components in the waste residue in a short time, and has simple operation and short treatment time. The temperature required in the process of forming silicate hydrosol by the silicon-containing agent and the process of adding the silicate hydrosol into the waste residue solution for stirring is lower, so that the method is more economical and is suitable for industrial application. Through the mechanism, the material components after reaction can be separated from the unreacted components, the removal efficiency is improved, the low energy consumption, the simple process and the high removal efficiency are realized, and the method can be used for the waste residue pretreatment of large-scale treatment.
The method has wide application range, and can treat not only alkaline waste residues but also acidic waste residues. The acidic or alkaline solution can promote the formation of silicate hydrosol, the hydrosol can uniformly disperse the waste residue components under the common working condition, and the treatment energy consumption is low; the silicate hydrosol is applied to the pretreatment of waste residues, has good treatment effect and simple operation, and can be applied to the industry. The obtained residue can be used as auxiliary materials for civil engineering and construction and other resource utilization ways, and is beneficial to the comprehensive utilization of waste residues.
Drawings
FIG. 1 is a scanning electron micrograph of a hydrolysate of a silicon-containing compound according to the present invention.
FIG. 2 is another scanning electron micrograph of a hydrolysate of a silicon-containing compound according to the present invention.
Detailed Description
The invention relates to a method for deeply removing soluble components in industrial waste residue, which comprises the following steps:
step one, adding a silicon-containing medicament into water, and stirring at a high speed of 300-400 r/min for 10-30 min at a temperature of 20-40 ℃. Controlling the pH value of the solution to be 10-12. Preferably, the silicon containing agent is one of sodium silicate, silica or methyl silicate.
Step two, adding the solution obtained in the step one into a mixed solution of industrial waste residue and water to form a suspension; the mass ratio of the silicon-containing medicament to the industrial waste residue is 1: (3-5), wherein the mass ratio of the waste residue to the water is 1: (3-5). The industrial waste residue is industrial solid waste, including sulfur-containing waste residue, domestic waste incineration fly ash, aluminum ash, salt-containing waste residue, electroplating sludge or nitrogen-containing waste residue and the like. Adding aluminum powder or hydrogen peroxide (30%) into the suspension, wherein the mass ratio of the suspension to the industrial waste residue is 1: (50-120); stirring at low speed for 30-75 min at 40-80 ℃; the low-speed stirring speed is 50-150 r/min.
And step four, filtering and drying the suspension liquid in the step three to obtain the industrial waste residue after the soluble components are removed.
Example 1
The embodiment relates to a deep removal treatment method for soluble components in fly ash generated by burning household garbage, which comprises the following steps:
step one, adding 50 kilograms of sodium silicate into water, stirring at a high speed of 300r/min for 10 minutes at 20 ℃, and controlling the pH value of the solution to be 10;
step two, adding 150 kg of domestic waste incineration fly ash and 450 kg of water into the solution obtained in the step one, and mixing to form suspension;
adding 3 kg of aluminum powder into the suspension, and stirring at a low speed of 50r/min for 30min at 80 ℃;
and step four, filtering and drying the suspension liquid obtained in the step three to obtain the household garbage incineration fly ash from which the soluble components are removed.
Example 2
The embodiment relates to a deep removal treatment method of soluble components in aluminum ash, which comprises the following steps:
step one, adding 30 kilograms of silicon dioxide into water, stirring at a high speed of 400r/min for 30min at 40 ℃, and controlling the pH value of the solution to be 11;
step two, adding 150 kg of aluminum ash and 750 kg of water into the solution obtained in the step one, and mixing to form a suspension;
step three, adding 1.25 kg of hydrogen peroxide into the suspension, and stirring at a low speed of 150r/min for 65min at 70 ℃;
and step four, filtering and drying the suspension liquid in the step three to obtain the aluminum ash after the soluble components are removed.
Example 3
The embodiment relates to a deep removal treatment method for soluble components in salt-containing waste residue, which comprises the following steps:
step one, adding 30 kg of methyl silicate into water, stirring at a high speed of 350r/min for 20min at a temperature of 30 ℃, and controlling the pH value of the solution to be 12;
step two, adding 140 kilograms of salt-containing waste residues and 560 kilograms of water into the solution obtained in the step one, and mixing to form suspension;
step three, adding 1.25 kg of hydrogen peroxide into the suspension, and stirring at low speed for 60min at 60 ℃, wherein the low-speed stirring speed is 100 r/min;
and step four, filtering and drying the suspension liquid obtained in the step three to obtain the salt-containing waste residue after the soluble components are removed.
Example 4
The embodiment relates to a deep removal treatment method for soluble components in electroplating sludge, which comprises the following steps:
step one, adding 60 kilograms of silicon dioxide into water, stirring at a high speed of 380r/min for 15min at a temperature of 25 ℃, and controlling the pH value of the solution to be 10;
step two, adding 300 kg of electroplating sludge and 1550 kg of water into the solution obtained in the step one, and mixing to form a suspension;
adding 2.5 kilograms of hydrogen peroxide into the suspension, and stirring at low speed of 150r/min for 75min at 50 ℃;
and step four, filtering and drying the suspension liquid in the step three to obtain the electroplating sludge from which the soluble components are removed.
Example 5
The embodiment relates to a deep removal treatment method of soluble components in nitrogenous waste residues, which comprises the following steps:
step one, adding 30 kilograms of silicon dioxide into water, stirring at a high speed of 320r/min for 20min at a temperature of 30 ℃, and controlling the pH value of the solution to be 12;
step two, adding 150 kg of nitrogenous waste residues and 750 kg of water into the solution obtained in the step one, and mixing to form suspension;
step three, adding 1.25 kg of hydrogen peroxide into the suspension, and stirring at low speed of 80r/min for 70min at 42 ℃;
and step four, filtering and drying the suspension liquid obtained in the step three to obtain the nitrogenous waste residue after the soluble components are removed.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the art can easily make various changes and modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The method for deeply removing the soluble components in the industrial waste residue is characterized by comprising the following steps of:
adding a silicon-containing medicament into water, stirring at a high speed for 10-30 min at a temperature of 20-40 ℃, and controlling the pH value of the solution to be 10-12;
step two, adding the solution obtained in the step one into a mixed solution of industrial waste residue and water to form a suspension;
adding aluminum powder or hydrogen peroxide into the suspension, and stirring at a low speed of 40-80 ℃ for 30-75 min;
and step four, filtering and drying the suspension liquid in the step three to obtain the industrial waste residue after the soluble components are removed.
2. The method for deeply removing soluble components in industrial waste residue according to claim 1, wherein in the first step, the silicon-containing agent is one of sodium silicate, silicon dioxide or methyl silicate.
3. The method for deeply removing the soluble component in the industrial waste residue according to claim 1, wherein in the second step, the industrial waste residue is industrial solid waste, and comprises sulfur-containing waste residue, household garbage incineration fly ash, aluminum ash, salt-containing waste residue, electroplating sludge or nitrogen-containing waste residue.
4. The method for deeply removing the soluble component in the industrial waste residue according to claim 1, wherein in the first step, the high-speed stirring speed is 300-400 r/min.
5. The method for deeply removing the soluble component in the industrial waste residue as claimed in claim 1, wherein in the second step, the mass ratio of the silicon-containing medicament to the industrial waste residue is 1: (3-5), wherein the mass ratio of the waste residue to the water is 1: (3-5).
6. The method for deeply removing the soluble components in the industrial waste residue according to claim 1, wherein in the third step, the mass ratio of the aluminum powder or hydrogen peroxide to the industrial waste residue is 1: (50-120).
7. The method for deeply removing the soluble component in the industrial waste residue according to claim 1, wherein in the third step, the low-speed stirring speed is 50-150 r/min.
CN202010170012.4A 2020-03-12 2020-03-12 Method for deeply removing soluble components in industrial waste residue Active CN111360024B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006290713A (en) * 2005-04-05 2006-10-26 Natoo Kenkyusho:Kk Method of reforming slag particle group as artificial sand, and artificial sand
CN101328035A (en) * 2007-06-20 2008-12-24 中国矿业大学(北京) Fly ash hollow microsphere surface modified whitening method
CN104984979A (en) * 2015-06-23 2015-10-21 上海环境卫生工程设计院 Method for stabilizing incineration fly ash by means of chemical coating
CN105290077A (en) * 2014-06-16 2016-02-03 北京精诚博桑科技有限公司 Method for coprocessing fly ash and landfill leachate
CN108721824A (en) * 2018-05-22 2018-11-02 重庆大学 The method of incineration of refuse flyash synchronism stability heavy metal and degrading polycyclic aromatic hydrocarbons
CN109940029A (en) * 2019-04-18 2019-06-28 重庆大学 The method for being catalyzed polycyclic aromatic hydrocarbon in subcritical water oxidation degradation incineration of refuse flyash

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006290713A (en) * 2005-04-05 2006-10-26 Natoo Kenkyusho:Kk Method of reforming slag particle group as artificial sand, and artificial sand
CN101328035A (en) * 2007-06-20 2008-12-24 中国矿业大学(北京) Fly ash hollow microsphere surface modified whitening method
CN105290077A (en) * 2014-06-16 2016-02-03 北京精诚博桑科技有限公司 Method for coprocessing fly ash and landfill leachate
CN104984979A (en) * 2015-06-23 2015-10-21 上海环境卫生工程设计院 Method for stabilizing incineration fly ash by means of chemical coating
CN108721824A (en) * 2018-05-22 2018-11-02 重庆大学 The method of incineration of refuse flyash synchronism stability heavy metal and degrading polycyclic aromatic hydrocarbons
CN109940029A (en) * 2019-04-18 2019-06-28 重庆大学 The method for being catalyzed polycyclic aromatic hydrocarbon in subcritical water oxidation degradation incineration of refuse flyash

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Denomination of invention: A method for deep removal of soluble components from industrial waste residue

Effective date of registration: 20221206

Granted publication date: 20211224

Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd.

Pledgor: Zhejiang Meishen New Material Technology Co.,Ltd.

Registration number: Y2022980025349