Iron-carbon micro-electrolytic filler and preparation method thereof

A technology of iron-carbon micro-electrolysis and carbon powder, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of reducing the contact area between water and fillers, the heavy workload of replacing fillers, Affect the effect of wastewater treatment and other issues, to achieve the effect of resource utilization, enhancement of treatment efficiency, and reduction of energy consumption

Active Publication Date: 2019-04-12
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 t

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. The iron-carbon micro-electrolytic filler is prepared from, by mass, 40-75 parts of reduced iron powder, 10-40 parts of carbon powder, 10-20 parts of bentonite, 2-6 parts of a catalyst and 0.5 -5 parts of a pore-forming agent. By adding the catalyst into the iron-carbon micro-electrolytic filler, thereaction activity of the filler can be improved, the polarization phenomenon generated between electrodes along with the prolongation of the reaction time is removed, the efficiency of disposing wastewater is improved, and no hardening and passivation phenomena occur on the surface of the filler. In a roasting process for preparing the filler, since the roasting temperature is 400-700 DEG C, thebentonite cannot be decomposed, and the roasting energy consumption is reduced. In a use process of the filler, the bentonite is not hydrolyzed, has an adsorption effect, plays a certain role in removing pollutants in the wastewater and cannot generate secondary pollution. Because of the addition of the pore-forming agent, the iron-carbon micro-electrolytic filler prepared by the method has the advantages that the porosity is high, the contact area with the wastewater is large, and the disposal effect is great.

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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IPC IPC(8): C02F1/461
CPCC02F1/46176
Inventor 黄尧奇赵忠敏
Owner BEIJING WEICHUANGLI TECH CO LTD
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