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Multi-component oxidation micro-electrolytic filler and preparation method thereof

A micro-oxidation and multi-element technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sewage treatment, etc., to achieve the effects of strengthening micro-electrolysis strength, large current density, and improving reaction rate

Active Publication Date: 2011-12-14
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-component oxidized micro-electrolytic filler without hardening and can be added by optimizing the preparation process of the filler in view of the water quality characteristics of refractory organic wastewater, so as to solve the problem of using traditional micro-electrolytic fillers in this type of wastewater. The above problems

Method used

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  • Multi-component oxidation micro-electrolytic filler and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] Mix 80-mesh scrap iron (powder), 100-mesh activated carbon, binder and catalyst at a weight ratio of 60:25:12:3, add water, stir and age for 20 to 30 minutes, then mechanically extrude the mixture to obtain The molded filler with a diameter of 50mm and a height of 50mm is demoulded to form a filler body. After natural drying, the filler body is dried at 80-90°C for 2 hours, and then sintered at 1000-1100°C for 1 hour under air-isolated conditions. , after the filler body is cooled, the multi-element oxidized micro-electrolytic filler is obtained. The binder is clay, and the catalyst is calcium oxide. The sintering of the green body mainly depends on the interdiffusion between the particles of each component and the homogenization of the alloy of the green body to complete, and there is no relative movement between the particles, thereby forming a large number of internal microporous alloy structures.

[0023] The multi-element oxidized micro-electrolytic filler of the ...

Embodiment 2

[0025] Mix 100-mesh scrap iron (powder), 100-mesh activated carbon, binder and catalyst at a weight ratio of 60:22:15:3, add water, stir and age for 20-30 minutes, then mechanically extrude the mixture to obtain The molded packing with a diameter of 65mm and a height of 50mm is demoulded to form a packing body. After natural drying, the packing body is dried at 90-100°C for 2 hours, and then sintered at 1000-1100°C for 1 hour under air-isolated conditions. , after the filler body is cooled, the multi-element oxidized micro-electrolytic filler is obtained. The binder is clay and the catalyst is copper. The shape of the prepared filler is porous honeycomb-like structure, the internal opening rate of the filler is 35%, and the packing porosity is 45%.

Embodiment 3

[0027]Mix 100-mesh scrap iron (powder), 150-mesh activated carbon, binder and catalyst at a weight ratio of 60:20:15:5, add water, stir and age for 20-30 minutes, then mechanically extrude the mixture to obtain The molded packing with a diameter of 80mm and a height of 80mm is made into a green body after demoulding. After natural drying, the green body is dried at 60-80°C for 2 hours, and then sintered at 1000-1100°C for 1 hour under air-isolated conditions. , after the filler body is cooled, the multi-element oxidized micro-electrolytic filler is obtained. The binder is sodium silicate and the catalyst is copper. The prepared filler has a porous briquette-like structure, the internal opening rate of the filler is 42%, and the packing porosity is 55%.

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Abstract

The invention belongs to the technical field of environmental engineering wastewater treatment, and particularly relates to multi-component oxidized micro-electrolysis filler and a preparation method thereof. The multi-component oxidized micro-electrolysis filler is mainly prepared from the following components in percentage by mass: 50-60% of iron, 20-30% of activated carbon, 12-15% of adhesive and 3-5% of catalyst through mixing, wherein iron is iron scrap or iron powder with particle size not more than 80 mesh; and activated carbon is in a powder and has particle size not more than 100 mesh. The preparation method of the multi-component oxidized micro-electrolysis filler comprises uniformly mixing iron, activated carbon, the adhesive and the catalyst according to the ratio, adding water, stirring and aging, then carrying out extrusion molding to obtain molded filler, demolding to obtain a filler blank, after naturally drying, drying, sintering in the absence of air, and cooling thefiller blank to obtain the multi-component oxidized electrolysis filler. According to the invention, the hardening, dead pool, stoppage and other practical problems existing in the use of the traditional micro-electrolysis fillers are solved.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering wastewater treatment, and in particular relates to a multi-element oxidation micro-electrolysis filler and a preparation method thereof. Background technique [0002] Micro-electrolysis technology is an ideal solution to the problems of high pollutant concentration, stable structure and poor biochemical properties of refractory organic wastewater. method, but traditional micro-electrolysis fillers mostly use iron filings (filament, flake or block) and granular activated carbon to mechanically blend, iron and carbon are only in simple physical contact, and an isolation layer is easily formed between them, making micro-electrolysis unsustainable This leads to frequent replacement of micro-electrolytic fillers, and there are many practical problems: one is that the electrodes are separated, the efficiency is not high, and the reaction speed is not fast; Dead zone, efficiency declin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/28
Inventor 秦树林高亮
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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