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A kind of iron-carbon micro-electrolytic filler and preparation method thereof

A technology of iron-carbon micro-electrolysis and carbon powder, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem of reducing the contact area between water and fillers, affecting the effect of wastewater treatment, replacing Problems such as heavy filler workload, to achieve the effect of resource utilization, high COD removal efficiency, and low production cost

Active Publication Date: 2022-03-08
BEIJING WEICHUANGLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing iron-carbon micro-electrolysis technology, iron filings, activated carbon powder or coke are mostly used as raw materials for iron and carbon. Due to uneven dispersion of iron and carbon particles, iron particles are prone to rust and compaction, resulting in channeling effect and reducing The contact area between the water and the filler affects the treatment effect of the wastewater, and frequent replacement of the filler is required, resulting in a large workload

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation scheme of the first iron-carbon micro-electrolytic filler of the present invention:

[0032] Mixing: Grind the waste slag in a planetary mill for 360 minutes, and sieve the powder through a 200-mesh sieve; the waste slag powder obtained after sieving is used as a part of the catalyst.

[0033] In parts by mass, the following materials are mixed: 60 parts of reduced iron powder, 18 parts of carbon powder, 15 parts of bentonite, 2 parts of catalyst, and 5 parts of pore-forming agent. 15 parts of coke powder and 3 parts of conductive carbon black are included in 18 parts of carbon powder; 2 parts of catalyst include 0.5 part of manganese dioxide, 0.5 part of waste slag powder and 1 part of wollastonite powder, wherein the iron content in the reduced iron powder is greater than 95%; 5 All the pore formers are fibers, preferably chemical fibers. Except for the pore-forming agent, the particle size of each of the above-mentioned substances is not less than 20...

Embodiment 2

[0040] The preparation scheme of the second iron-carbon micro-electrolytic filler of the present invention:

[0041] Mixing: in parts by mass, the following materials were mixed: 75 parts of reduced iron powder, 10 parts of carbon powder, 10 parts of bentonite, 3 parts of catalyst, and 2 parts of pore-forming agent. Among them, the iron content in the reduced iron powder is greater than 95%; 10 parts of carbon powder include 9 parts of activated carbon powder and 1 part of conductive carbon black; 3 parts of catalyst include 1 part of copper oxide, 0.5 part of manganese dioxide and 1.5 parts of wollastonite powder; 2 The pore formers are all wood chips. Except for the pore-forming agent, the particle size of each of the above-mentioned substances is not less than 200 mesh.

[0042] Mix all the above-mentioned materials in a mixer for 5 minutes to obtain a mixture;

[0043] Forming into balls: Wet the above-mentioned mixture with an appropriate amount of water. The amount of wa...

Embodiment 3

[0048] The preparation scheme of the third iron-carbon micro-electrolytic filler of the present invention:

[0049] Mixing: Grind the waste slag in a planetary mill for 360 minutes, and sieve the powder through a 200-mesh sieve; the waste slag powder obtained after sieving is used as a part of the catalyst.

[0050] In parts by mass, the following materials are mixed: 60 parts of reduced iron powder, 18 parts of carbon powder, 15 parts of bentonite, 3.3 parts of catalyst, and 3.7 parts of pore-forming agent. Among them, the iron content in reduced iron powder is greater than 95%; 18 parts of carbon powder include 15 parts of coke powder and 3 parts of conductive carbon black; 3.3 parts of catalyst include 1 part of copper oxide, 0.5 part of manganese dioxide, 0.3 part of waste slag powder and 1.5 Parts of wollastonite powder; 3.7 parts of pore-forming agent are all fibers, preferably chemical fibers. Except for the pore-forming agent, the particle size of the above-mentioned ...

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Abstract

The invention discloses an iron-carbon micro-electrolytic filler and a preparation method thereof. In terms of parts by mass, the iron-carbon micro-electrolytic filler comprises: 40-75 parts of reduced iron powder, 10-40 parts of carbon powder, and 10-20 parts of bentonite , 2-6 parts of catalyst, 0.5-5 parts of pore-forming agent. The addition of the catalyst to the iron-carbon micro-electrolysis filler of the present invention can improve the reactivity of the filler and remove the polarization phenomenon between the electrodes as the reaction time prolongs, thereby enhancing the treatment efficiency of wastewater, and the surface of the filler has no hardening or passivation phenomenon occur. In the roasting process of preparing the above-mentioned fillers, since the roasting temperature is 400-700°C, the bentonite will not decompose, and the energy consumption of roasting is reduced; during the use of the fillers, the bentonite is not hydrolyzed and has an adsorption effect, which is beneficial to The removal of pollutants in wastewater plays a certain role, and does not produce secondary pollution. The iron-carbon micro-electrolytic filler prepared by the invention has high porosity due to the addition of a pore-forming agent, a large contact area with waste water, and good treatment effect.

Description

technical field [0001] The invention relates to the technical field of high-salt and high-concentration wastewater treatment, in particular to an iron-carbon micro-electrolytic filler suitable for high-salt and high-concentration wastewater treatment and a preparation method thereof. Background technique [0002] With the development of society, many industrial enterprises are established rapidly, especially the rapid development of petrochemical, industrial metallurgy, electroplating, papermaking, medicine and other industries, which not only provides various conveniences for human life, but also brings a lot of Industrial wastewater that is difficult to degrade and purify naturally. These wastewaters have complex components, poor biodegradability, and high toxicity, so they cannot be treated by conventional sewage treatment methods. The country implements stricter monitoring of pollutant discharge indicators, resulting in a stricter environmental protection management sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
CPCC02F1/46176
Inventor 黄尧奇赵忠敏
Owner BEIJING WEICHUANGLI TECH CO LTD