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Iron-copper bimetal particle and preparation method thereof, and treatment method for dinitrodiazophenol wastewater

A technology of dinitrodiazophenol and a treatment method is applied in the field of treatment of dinitrodiazophenol wastewater, which can solve the problems of narrow pH applicable range, short service life of raw materials, corrosion and consumption, etc., so as to achieve improvement and reuse. The effect of utilization, low production cost and extended service life

Inactive Publication Date: 2019-04-02
SICHUAN YIBIN WEILI CHEM CO LED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There are a large number of tiny cementites inside the zero-valent iron particles. When they are immersed in a conductive electrolyte solution, the galvanic effect occurs between the cementite (C) and iron (Fe) in the zero-valent iron particles. A large number of microscopic corrosion primary cells are formed. In the primary cell reaction, C and Fe0 are used as anode and cathode respectively. The galvanic corrosion reaction of the anode provides a large amount of electrons, which are consumed by corrosion. The electrochemical corrosion simultaneously causes flocculation, adsorption, bridging, A series of joint and synergistic effects such as volume sweeping, co-precipitation, electrodeposition, and electrochemical reduction can realize the treatment of toxic, harmful and refractory industrial wastewater such as petrochemical, printing and dyeing, pharmaceuticals, and electroplating. This method has low operating costs. , easy operation and management, etc., but in actual operation, there are still defects such as easy packing, narrow pH application range, and short service life of raw materials.

Method used

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  • Iron-copper bimetal particle and preparation method thereof, and treatment method for dinitrodiazophenol wastewater

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Effect test

Embodiment 1

[0059] At room temperature, normal pressure and a stirring speed of 500r / min, iron powder with an average particle size of about 50 µm was added to an aqueous solution of copper sulfate with a copper ion concentration of 10 mg / L, and the amount added was iron powder and copper ion The mass ratio of the mixture was 10:2, and then continued to stir for 15 minutes, then allowed to settle for 15 minutes, and then discharged the supernatant, and washed the obtained solid particles with deionized water to remove salt impurities on the surface, and then under the protection of nitrogen in the Dry at 40°C until there is no moisture on the surface to obtain iron-copper bimetallic particles. figure 1 It can be observed from the scanning electron microscope image that the particle size of the obtained iron-copper bimetallic particles is about 50~60μ, which is composed of iron particles and copper particles, and the copper particles are evenly distributed and adhered to the surface of the ...

Embodiment 2

[0061] At room temperature, normal pressure and a stirring speed of 600r / min, iron powder with an average particle size of about 800µm was added to industrial wastewater with a copper ion concentration of 12mg / L, and the amount added was the mass ratio of iron powder to copper ion 10:1, then continue to stir for 20 minutes, and then let it settle for 5 minutes to discharge the supernatant, wash the obtained solid particles with deionized water to remove salt impurities on the surface, and then dry at 40°C under the protection of nitrogen When there is no moisture on the surface, iron-copper bimetallic particles are obtained. The particle size is about 800~850μm, which is observed by scanning electron microscope. It is composed of iron particles and copper particles, and the copper particles are evenly distributed and adhered to the surface of the iron particles. .

Embodiment 3

[0063] At room temperature, normal pressure and a stirring speed of 600r / min, iron powder with an average particle size of 100 µm was added to copper sulfite aqueous solution with a copper ion concentration of 14 mg / L, and the amount of iron powder and copper ion added was The mass ratio is 10:1, then continue to stir for 20 minutes, then let it settle for 20 minutes and then discharge the supernatant, wash the obtained solid particles with deionized water to remove salt impurities on the surface, and then dry them under vacuum at room temperature When there is no moisture on the surface, iron-copper bimetallic particles are obtained. The particle size is about 100-150 μm, which is observed by scanning electron microscopy. It is composed of iron particles and copper particles, and the copper particles are evenly distributed and adhered to the surface of the iron particles. .

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Abstract

The invention discloses an iron-copper bimetal particle and a preparation method thereof, and a treatment method for dinitrodiazophenol wastewater. The iron-copper bimetal particle is prepared by comprising the following steps: (1) adding micron-sized iron powder into a salt solution of copper, then carrying out stirring so as to obtain a mixture, and carrying out standing; and (2) after particlessuspended in the mixture are completely precipitated, discharging a supernatant, and washing an obtained solid particle so as to obtain the iron-copper bimetal particle. The invention also disclosesthe iron-copper bimetal particle prepared by using the above-mentioned preparation method and the treatment method for corresponding dinitrodiazophenol wastewater at the same time. The treatment method provided by the invention can treat high-concentration dinitrodiazophenol wastewater, and has the advantages of wide treatment range, high treatment efficiency and low treatment cost.

Description

technical field [0001] The invention relates to the technical field of the treatment method of dinitrodiazophenol wastewater. Background technique [0002] Dinitrodiazophenol (DDNP) is the most widely used primer in industrial detonators in my country, with nitro derivatives of phenol as the main component. According to the data, during the production of dinitrodiazophenol in the detonator factory, about 200-250 tons of wastewater will be produced for every ton of product produced. These wastewaters contain a large amount of dinitrodiazophenol, which is highly toxic and complex in composition. It has the characteristics of large amount of water, etc., and has potential teratogenic and carcinogenic hazards to the human body. If untreated dinitrodiazophenol wastewater is directly discharged into water bodies, it will cause serious environmental problems. [0003] The traditional biological treatment process is difficult to effectively treat DDNP wastewater, while the chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/30B22F9/24C02F101/38C02F101/34
CPCB22F9/24C02F1/302C02F1/461C02F1/46176C02F2101/345C02F2101/38
Inventor 张恒赖波刘长江曹彭木魏彪江宗尚庞彦波李树彬
Owner SICHUAN YIBIN WEILI CHEM CO LED
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