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Waste fly ash treatment agent, and preparation method and application thereof

A garbage fly ash and treatment agent technology, applied in the field of environmental governance, can solve the problems of difficult formation of long-term stable complex precipitation, long-term effect of difficult heavy metals, high-efficiency stabilization, and few heavy metal binding sites in treatment agents, etc., to achieve increased Stabilization of heavy metals, easy resource reuse, efficient and long-lasting effects

Active Publication Date: 2017-07-14
沐联环境科技(重庆)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the problems existing in the prior art are: the treatment agent used has fewer binding sites for heavy metals, and it is difficult to form long-term stable complex precipitation, so it is difficult to achieve long-term and efficient stabilization of heavy metals in fly ash. It is difficult to realize the resource reuse after the harmless disposal of garbage fly ash

Method used

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  • Waste fly ash treatment agent, and preparation method and application thereof
  • Waste fly ash treatment agent, and preparation method and application thereof
  • Waste fly ash treatment agent, and preparation method and application thereof

Examples

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preparation example Construction

[0029] like figure 1 As shown, the preparation method of the garbage fly ash treatment agent provided by the embodiments of the present invention comprises the following steps:

[0030] S101: Polyglycidyl methacrylate macromolecule microspheres are prepared by radical emulsion polymerization of glycidyl methacrylate;

[0031] S102: The polyglycidyl methacrylate macromolecular microspheres undergo a ring-opening reaction with the active siloxane, long-chain alkyl derivatives, and polyamine structural compounds, and the polyether Modified siloxane chain Rn, long chain alkyl R f and the polyamine structure R m The method is introduced into the surface of the prepared polyglycidyl methacrylate macromolecular microspheres to obtain the garbage fly ash treatment agent.

[0032] The present invention also provides the application of the above garbage fly ash treatment agent, comprising the following steps:

[0033] Mix the above-mentioned garbage fly ash treatment agent with the ...

Embodiment 1

[0036] The preparation method of the garbage fly ash treatment agent provided by the embodiment of the present invention comprises the following steps:

[0037]1) In the four-necked flask equipped with condenser tube, nitrogen inlet and outlet, and mechanical stirring device, add 100ml aqueous solution containing 5% (wt%) span-80 emulsifier, stabilizer PVP-k30 (Povidone) 3g, after dissolving Add monomer (GMA (glycidyl methacrylate) 30g, BA (butyl acetate) 3g, divinylbenzene 2g and initiator AIBN (azobisisobutyronitrile) 0.6g, stir with nitrogen for 30min, 70 ℃ Constant temperature, 120r / min stirring for 24h, after cooling, PGMA (polyglycidyl methacrylate) polymer microsphere emulsion was prepared;

[0038] 2) To 50 g of the PGMA polymer microsphere emulsion prepared in step 1), add 3.0 g of dodecyl mercaptan, 5.0 g of aminosiloxane, react at 30°C for 2 h under stirring, add 10 g of triethylenetetramine, Continue to stir and react for 5h, then cool down and cool down to obtain...

Embodiment 2

[0041] The preparation method of the garbage fly ash treatment agent provided by the embodiment of the present invention comprises the following steps:

[0042] 1) Add 100ml aqueous solution containing 5% (wt %) tween-60 emulsifier, stabilizer PVA (Povidone) 3g in the four-necked flask equipped with condenser tube, nitrogen inlet and outlet, and mechanical stirring device, and add monohydrate after dissolving. Body (GMA (glycidyl methacrylate) 30g, HPMAS (sodium hydroxypropane sulfonate) 5g, pentaerythritol tripropylene ester 1g and initiator AIBN (azobisisobutyronitrile) 0.3g, stirring with nitrogen for 30min , 70 ℃ constant temperature, 120r / min stirring for 24h, after cooling, obtained PGMA (polyglycidyl methacrylate) polymer microsphere emulsion;

[0043] 2) To 50 g of the PGMA polymer microsphere emulsion prepared in step 1), add 5.0 g of octadecanoic acid and 7.0 g of hydroxysiloxane, stir at 45°C for 2 h, add 10 g of hexamethylene diamine, and continue to stir for 6 h ...

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Abstract

The invention belongs to the technical field of environment treatment, and discloses a waste fly ash treatment agent, and a preparation method and an application thereof. The waste fly ash treatment agent has a plurality of heavy metal binding sties and a long hydrophobic chain, can realize long-acting and high-efficiency stability of heavy metals, and forms a hydrophobic coating on the surface of ash to prevent the re-dissolving of the stable metals and reduce the surface energy of treated waste fly ash, so the compatibility with asphalt and cement is increased, and harmless treatment and recycling of the waste fly ash are convenient.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a garbage fly ash treatment agent and its preparation method and application. Background technique [0002] Waste incineration fly ash is the material collected in the heat recovery system and flue gas purification system after domestic waste incineration. Generally, it accounts for about 3%-5% of the amount of incinerated waste. Waste incineration fly ash contains high levels of Cd, Pd, Zn, Cr and other harmful heavy metals and salts that can be leached by water. Cause heavy metal migration, pollute groundwater, soil and air, so incineration fly ash is generally considered a hazardous waste. [0003] At present, there are mainly cement solidification method and agent stabilization method. The cement curing method is to use the curing agent and waste incineration fly ash to form a solidified body after treatment, thereby reducing the dissolution of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/32C08F220/18C08F212/36C08F8/42C08F8/32C08F8/34C08F8/00C08F220/14C08F220/38C08F222/20B09B3/00
CPCC08F8/00C08F8/32C08F8/34C08F8/42C08F220/32C08F220/325B09B3/10C08F220/382C08F222/104C08F220/1804C08F212/36C08F220/14
Inventor 窦建军陈刚才肖定书叶姜瑜
Owner 沐联环境科技(重庆)股份有限公司
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