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A kind of melamine polymer material and its application and preparation method in the treatment of heavy metals

A polymer material, melamine technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problem of unsatisfactory removal effect of gaseous chlorinated heavy metals, low purification effect of element heavy metals, and high cost, etc. problem, to achieve the effect of low cost, increased specific surface area, and increased coordination points

Active Publication Date: 2018-10-12
湖南西林环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the control of elemental heavy metals by physical adsorption is very expensive.
In addition, the elemental heavy metals adsorbed by activated carbon will re-enter the environment after landfill disposal, causing secondary pollution
[0008] 3. Sodium sulfide injection: Using sodium sulfide to have good reactivity with oxidized heavy metals (mainly chlorinated heavy metals), it can effectively convert chlorinated heavy metals into granular heavy metals, which can be purified by dust removal equipment; however, this method Purification effect on elemental heavy metals is generally less than 30%
[0009] 4. Modified activated carbon (loaded with sulfur): In the United States, the latest experimental method to use sulfur-loaded activated carbon to improve the purification efficiency of elemental heavy metals can effectively purify elemental heavy metals, but the removal effect on gaseous chlorinated heavy metals is not good. ideal
[0010] Moreover, the above common technologies are usually only suitable for purifying heavy metals in the oxidation state in the flue gas

Method used

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  • A kind of melamine polymer material and its application and preparation method in the treatment of heavy metals
  • A kind of melamine polymer material and its application and preparation method in the treatment of heavy metals
  • A kind of melamine polymer material and its application and preparation method in the treatment of heavy metals

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Effect test

Embodiment 1

[0033] The polymer material is a polymer obtained by polymerizing melamine and pyrrole formaldehyde in dimethyl sulfoxide (DMSO). The specific synthesis steps are as follows: add 100 g of melamine and 100 g of pyrrole formaldehyde to a 500-milliliter round low flask, then add 250 ml of a dimethyl sulfoxide solution, and the mixture is heated and stirred at 130 degrees Celsius under a nitrogen atmosphere for 15 hours. After cooling, the pale yellow solid was filtered out, washed with water and ethanol, and dried to obtain 189 g of a polymer cross-linked polymer.

Embodiment 2

[0035] The polymer material is a polymer obtained by polymerizing melamine and pyrrole formaldehyde in dimethylformamide (DMF). The specific synthesis steps are as follows: 100 g of melamine and 113.1 g of pyrrole formaldehyde are added to a 500-milliliter round low flask, and then 300 ml of dimethylformamide solution is added, and the mixture is heated and stirred at 110 degrees Celsius under nitrogen for 12 hours. After cooling, the pale yellow solid was filtered out, washed with water and ethanol, and dried to obtain 191 g of a polymer cross-linked polymer.

Embodiment 3

[0037] The polymer material is a polymer obtained by polymerizing melamine and pyrrole formaldehyde in dimethylacetamide (DMAC). The specific synthesis steps are as follows: add 100 g of melamine and 120 g of pyrrole formaldehyde to a 500-milliliter round low flask, and then add 250 ml of dimethylacetamide solution, and the mixture is heated and stirred at 150 degrees Celsius for 8 hours. After cooling, the white solid was filtered out, washed with water and ethanol, and dried to obtain 190 g of a polymer cross-linked polymer.

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Abstract

The invention discloses a melamine high-polymer material, application of the melamine high-polymer material to the aspect of heavy metal treatment and a method for preparing the melamine high-polymer material. Melamine and pyrrolylcarbonyl are subjected to condensation polymerization reaction to obtain the melamine high-polymer material. The melamine high-polymer material, the application and the method have the advantages that heavy metal in oxidation states and heavy metal in simple-substance states can be simultaneously adsorbed by the melamine high-polymer material, different types of heavy metal in wastewater can be efficiently removed, and accordingly the wastewater can meet national emission standards; heavy metal in industrial flue gas can be efficiently removed, and accordingly the purpose of purifying the flue gas can be achieved; heavy metal in soil can be effectively treated or solidified, and accordingly the purpose of remedying the soil can be achieved.

Description

technical field [0001] The invention relates to a melamine polymer material and a preparation method and application thereof, in particular to the application of a melamine polymer material in the treatment and purification of industrial flue gas, waste water and heavy metals in soil, and belongs to the technical field of heavy metal pollution control. Background technique [0002] The impact of heavy metal pollution on ecology has been recognized by the world, especially the highly toxic heavy metals such as mercury, silver, cadmium, copper, lead, nickel, zinc, etc. cannot be decomposed by themselves in nature, and must be treated by physical and chemical methods. Become a single element or metal compound. At present, there are many methods for treating wastewater containing heavy metals. Among them, chemical precipitation is the most widely used method to treat wastewater containing heavy metals. Most of these agents belong to chemicals such as sodium hydroxide and calcium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C02F1/28C02F101/20
CPCC02F1/285C02F2101/20C08G73/0611C08G73/0644
Inventor 王平山
Owner 湖南西林环保材料有限公司
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