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Iron-carbon filler containing nano treatment unit and preparation method thereof

A technology of iron-carbon filler and treatment unit, which is applied in the direction of metallurgical wastewater treatment, water/sewage treatment, chemical instruments and methods, etc. It can solve the problems of limitation, low current density in the sewage treatment process, and limited improvement of sewage treatment efficiency. , to achieve the effects of reducing toxicity, good effluent quality, simple preparation process and environmental protection

Active Publication Date: 2021-06-22
南京乐透思高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the number of micro-primary cells that can form an effective electrochemical degradation reaction for organic pollutants is significantly limited by the particle size and number of material particles, the number of micro-primary cells per unit volume is limited in the above solutions, resulting in sewage treatment low process current density
Therefore, the above means have a limited effect on improving the efficiency of sewage treatment.

Method used

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  • Iron-carbon filler containing nano treatment unit and preparation method thereof
  • Iron-carbon filler containing nano treatment unit and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of iron carbon filler I

[0044] Step 1, 20 parts by weight of high-concentration iron-containing solution (iron ion concentration is 25000ppm), 10 parts by weight of lignin, 3 parts by weight of hydrogen peroxide and 1 part by weight of cobalt chloride are mixed, and then heated at a temperature of 60°C Fully carry out aeration reaction under 2 hours;

[0045] Step 2, adjust the pH to 3.0, then put in 0.1 parts by weight of titanic acid, and continue the reaction for 2 hours;

[0046] Step 3, after standing and settling for 6 hours, obtain a solid mixture through solid-liquid separation;

[0047] Step 4, the obtained solid mixture was dried at 65° C. for 12 hours, and then pulverized into 325-mesh particles by sieving;

[0048] Step 5, the particles obtained in step 4 are placed in a muffle furnace, baked at 180°C for 30 minutes under a nitrogen atmosphere to remove residual moisture, and then reacted in vacuum at 700°C for 2 hours; and

[0049] In ste...

Embodiment 2

[0056] Preparation of Fe-Carbon Filler II

[0057] Step 1, 18 parts by weight of high-concentration iron-containing solution (iron ion concentration is 25000ppm), 12 parts by weight of lignin, 4 parts by weight of hydrogen peroxide and 1 part by weight of cobalt chloride are mixed, and then heated at a temperature of 60 ° C. Fully carry out aeration reaction under 2 hours;

[0058] In step 2, adjust the pH to 3.0, then add 0.15 parts by weight of titanic acid, and continue the reaction for 2 hours;

[0059] Step 3, after standing and settling for 6 hours, obtain a solid mixture through solid-liquid separation;

[0060] Step 4, the obtained solid mixture was dried at 55° C. for 12 hours, and then pulverized into 300-mesh granules by sieving;

[0061] Step 5, the particles obtained in step 4 are placed in a muffle furnace, baked at 200°C under a nitrogen atmosphere for 30 minutes to remove residual moisture, and then reacted in vacuum at 800°C for 2 hours; and

[0062] Step...

Embodiment 3

[0069] Preparation of Fe-Carbon Filler III

[0070] Step 1, 20 parts by weight of high-concentration iron-containing solution (iron ion concentration is 30000ppm), 10 parts by weight of lignin, 5 parts by weight of hydrogen peroxide and 1 part by weight of nickel chloride are mixed, and then heated at a temperature of 50 ° C fully carry out the aeration reaction for 3 hours;

[0071] In step 2, adjust the pH to 3.0, then add 0.2 parts by weight of titanic acid, and continue the reaction for 2 hours;

[0072] Step 3, after standing and settling for 6 hours, obtain a solid mixture through solid-liquid separation;

[0073] Step 4, the obtained solid mixture was dried at 60° C. for 12 hours, and then crushed into 200-mesh granules by sieving;

[0074] Step 5, the particles obtained in step 4 are placed in a muffle furnace, baked at 200°C for 30 minutes under a nitrogen atmosphere to remove residual moisture, and then reacted in vacuum at 750°C for 2 hours; and

[0075] Step 6...

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Abstract

The invention relates to an iron-carbon filler containing a nano treatment unit and a preparation process thereof. Specifically, the iron-carbon filler is prepared from the following raw materials in parts by mass through chemical reaction: 15-25 parts by weight of an iron-containing solution, 5-15 parts by weight of a biomass material, 0.1-0.2 part by weight of a titanium-based compound, 3-5 parts by weight of a chemical modifier and 0.5-1.5 parts by weight of auxiliary metal salt based on the mass of iron ions. The iron-carbon filler disclosed by the invention is prepared by taking chemical sewage and renewable biomass as raw materials through chemical reaction, and a large number of nano iron-carbon treatment units are formed while the cyclic utilization of the materials is realized, so that the number of primary batteries for forming effective electrochemical degradation reaction on organic pollutants in unit volume is greatly increased, the efficiency of the iron-carbon filler is fundamentally improved, and the iron-carbon filler is suitable for advanced treatment of various types of sewage.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an iron-carbon filler containing a nanometer treatment unit and a preparation method thereof. Background technique [0002] Since the iron-carbon micro-electrolysis technology came out in the 1960s, it has attracted widespread attention in many countries and regions. Today, this technology is an ideal process for treating high-concentration refractory organic wastewater. This technology uses the principle of metal corrosion to form a primary battery to treat sewage, also known as internal electrolysis, iron filings filtration, etc. It uses the potential difference generated by the micro-electrolytic material filled in the sewage to electrolyze the sewage without electricity, so as to achieve the purpose of degrading organic pollutants and improving the biodegradability of sewage at the same time. [0003] Traditional micro-electrolysis materials are mostly mechanically...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/461C02F1/28C02F101/20C02F103/16
CPCC02F1/46176C02F1/281C02F2101/203C02F2103/16
Inventor 朱成成陈萌萌刘尚刘兹敏
Owner 南京乐透思高新材料科技有限公司
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