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A kind of garbage fly ash treatment agent and its preparation method and application

A technology of waste fly ash and treatment agent, applied in the field of environmental management, can solve the problems of difficult to form long-term stable complex precipitation, difficult to long-act heavy metals, high-efficiency stabilization, and fewer heavy metal binding sites in the treatment agent. Stabilization of heavy metals, easy resource reuse, efficient and long-lasting effect

Active Publication Date: 2019-05-28
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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  • A kind of garbage fly ash treatment agent and its preparation method and application
  • A kind of garbage fly ash treatment agent and its preparation method and application
  • A kind of garbage fly ash treatment agent and its preparation method and application

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preparation example Construction

[0029] Such as 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 t...

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) Add 100ml aqueous solution that contains 5% (wt%) span-80 emulsifier in the four-neck flask that condenser tube, nitrogen inlet and outlet, mechanical stirring device are housed, stabilizer PVP-k30 (povidone) 3g, after dissolving Add monomers (GMA (glycidyl methacrylate) 30g, BA (butyl acetate) 3g, divinylbenzene 2g and initiator AIBN (azobisisobutyronitrile) 0.6g, stir with nitrogen for 30min, 70°C Constant temperature, 120r / min stirring 24h, after cooling, make PGMA (polyglycidyl methacrylate) polymer microsphere emulsion;

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

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 the 100ml aqueous solution that contains 5% (wt%) tween-60 emulsifier in the four-neck flask that condenser pipe, nitrogen inlet and outlet, mechanical stirring device are housed, stabilizing agent PVA (Povidone) 3g, after dissolving, add single Body (GMA (glycidyl methacrylate) 30g, HPMAS (sodium methacrylate hydroxypropyl sulfonate) 5g, pentaerythritol tripropylene 1g and initiator AIBN (azobisisobutyronitrile) 0.3g, nitrogen gas was stirred for 30min , constant temperature at 70°C, stirring at 120r / min for 24h, after cooling, a PGMA (polyglycidyl methacrylate) polymer microsphere emulsion was prepared;

[0043] 2) Add 5.0 g of octadecanoic acid and 7.0 g of hydroxysiloxane to 50 g of the PGMA polymer microsphere emulsion prepared in step 1), and react for 2 h under stirring at 45° C., add 10 g of hexamethylen...

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Abstract

The invention belongs to the technical field of environmental treatment, and discloses a garbage fly ash treatment agent and its preparation method and application; the garbage fly ash treatment agent has multiple heavy metal binding sites and long hydrophobic chains, and can realize long-term and high efficiency of heavy metals Stable, and at the same time, the treatment agent forms a hydrophobic coating on the surface of the ash, which not only prevents heavy metals from re-dissolving after stabilization, but also reduces the surface energy of the garbage fly ash after treatment, thereby increasing the compatibility with asphalt, cement, etc., and facilitating the removal of garbage fly ash Harmless disposal and resource reuse.

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 Patents(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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