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A method for catalytic oxidation of modified graphene to treat thiram waste water

A catalytic oxidation and graphene technology, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., to reduce production costs and restore activity

Active Publication Date: 2018-03-23
山东本源晶体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no method for using modified graphene oxide to catalyze oxidation to treat sulfur and ammonia nitrogen wastewater in thiram wastewater

Method used

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  • A method for catalytic oxidation of modified graphene to treat thiram waste water
  • A method for catalytic oxidation of modified graphene to treat thiram waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation of nanoscale modified graphene:

[0027] 1) Disperse 22 parts by weight of graphene oxide, 3 parts by weight of manganese chloride, and 1 part by weight of sodium tungstate in 60 parts by weight of ethylene glycol, stir and disperse for 20-30 minutes, then add 1 part by weight of 2-methylimidazole, 2 parts by weight of polyvinyl alcohol were stirred and reacted at 50-60° C. for 2-3 hours;

[0028] 2) Add 7 parts by weight of sodium borohydride in batches, react at 160-170°C for 4-6 hours, cool to room temperature after the reaction, and filter to obtain a powdery solid;

[0029] 3) Calcining the powdered solid at 200°C for 3-4 hours in a nitrogen atmosphere for the first time, and then calcining it for a second time at 800-900°C for 1-2 hours in a nitrogen atmosphere to obtain nanoscale modified graphene.

[0030] 2. Wastewater treatment

[0031] 1) Take 100 parts by weight of thiram production waste water, and filter through a membrane filter to remove...

Embodiment 2

[0034] 1. Preparation of nanoscale modified graphene:

[0035] 1) Disperse 25 parts by weight of graphene oxide, 4 parts by weight of manganese chloride, and 2 parts by weight of sodium tungstate in 60 parts by weight of ethylene glycol and stir for 20-30 minutes, then add 2 parts by weight of 2-methylimidazole, 3 parts by weight of polyvinyl alcohol were stirred and reacted at 50-60° C. for 2-3 hours;

[0036] 2) Add 7 parts by weight of sodium borohydride in batches, react at 160-170°C for 4-6 hours, cool to room temperature after the reaction, and filter to obtain a powdery solid;

[0037] 3) Calcining the powdered solid at 200°C for 3-4 hours in a nitrogen atmosphere for the first time, and then calcining it for a second time at 600-700°C for 1-2 hours in a nitrogen atmosphere to obtain nanoscale modified graphene.

[0038] 2. Wastewater treatment

[0039] 1) Take 100 parts by weight of thiram production waste water, and filter through a membrane filter to remove mechani...

Embodiment 3

[0042] Compared with Example 1, the calcination temperature of the secondary calcination in the preparation process of nano-scale modified graphene is 750-800° C., and the rest of the preparation method of nano-scale modified graphene is completely consistent with that of Example 1.

[0043] Wastewater treatment method is with embodiment 1.

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Abstract

The invention belongs to the technical field of waste water treatment, and particularly relates to a method for treating thiram waste water through catalytic oxidization of modified graphene. The method comprises the following steps: modifying graphene through manganese chloride and sodium tungstate to obtain nanoscale modified graphene, then performing catalytic oxidization treatment to the thiram production waste water by taking the modified nanoscale graphene as a catalyst, so that the content of ammonia nitrogen in the waste water can be effectively decreased; and the catalyst can be recycled, and can be activated through simple high-temperature calcinating.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for treating thiram wastewater by catalytic oxidation of modified graphene. Background technique [0002] The use of pesticides has a long history and can be roughly divided into two stages: the use of natural substances and the use of chemical products. In the more than 40 years from the 1940s to the 1980s after the formation of the industry, the pesticide industry has rapidly developed into a large industry of fine chemicals. Sulfur powder was used at the beginning, then lime sulfur as fungicide, followed by Paris green (copper arsenite with impurities) as fungicide, Bordeaux mixture of copper sulfate and lime as fungicide, calcium arsenate instead Lead arsenate as an insecticide. The first organic mercury compound was mercuric o-chlorophenate. Until 1931-1934, W.H. Tisdale in the United States discovered the excellent bactericidal effect of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/44C02F101/10C02F101/16
CPCC02F1/44C02F1/725C02F2101/101C02F2101/16
Inventor 赵兴亚杨志远于法鹏杨冰雪
Owner 山东本源晶体科技有限公司