CN102951708B - Multielement catalysis iron-carbon micro-electrolysis filler and preparation method thereof - Google Patents
Multielement catalysis iron-carbon micro-electrolysis filler and preparation method thereof Download PDFInfo
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- CN102951708B CN102951708B CN201210357608.0A CN201210357608A CN102951708B CN 102951708 B CN102951708 B CN 102951708B CN 201210357608 A CN201210357608 A CN 201210357608A CN 102951708 B CN102951708 B CN 102951708B
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Abstract
The invention discloses multielement catalysis iron-carbon micro-electrolysis filler and a preparation method thereof. The multielement catalysis iron-carbon micro-electrolysis filler mainly comprises 55-75 parts of iron powder, 10-30 parts of active carbon powder, 5-20 parts of nonferrous metal powder catalyst A, 5-10 parts of nonferrous metal powder catalyst B and 5-10 parts of inorganic catalyst C. The preparation method comprises the steps of weighing, extruding, primary moulding and high-temperature sintering. The invention has the advantages that the multielement catalysis iron-carbon micro-electrolysis filler disclosed by the invention overcomes the defects that the traditional scrap iron is hardened easily and generated sludge is tripled or quadrupled after reaction because reaction speed cannot be controlled when micro cell reactions are excessive, iron-carbon micro cell potential difference is enlarged, reaction speed is higher, reaction ratio can be controlled, contact ratio of pollutant to a micro cell is tripled, sewage oxidation treatment efficiency is doubled or tripled, no hardening is caused as iron atoms are not in direct contact, and the filler does not need to be replaced or regenerated.
Description
Technical field
The present invention relates to a kind of iron-carbon micro-electrolysis filler, specifically a kind of multiple catalyzing iron-carbon micro-electrolysis filler and preparation method thereof, belongs to iron-carbon micro-electrolysis filler field.
Background technology
Micro electrolysis tech is a kind of ideal technology of processing at present high concentrated organic wastewater, claims again internal electrolysis.It is in cold situation, utilizes the micro-electrolysis material self being filled in waste water to produce 1.2V potential difference waste water is carried out to electrolysis treatment, to reach the object of degradable organic pollutant.After system water flowing, in equipment, can form countless microbattery systems, at its action space, form an electric field.The nascent state producing in treating processes [H], Fe
2+deng can with waste water in many component generation redox reactions, such as can damaged colored chromophoric group or the auxochrome group of coloring matter in waste water, even chain rupture, reaches the effect of degradation and decolorization; The Fe generating
2+further be oxidized to Fe
3+their hydrate has stronger absorption-flocculation activity, particularly after adding adjusting PH with base value, generate ferrous hydroxide and ferric hydroxide colloid flocculation agent, the ferric hydroxide colloid that their adsorptive power obtains higher than general medicament hydrolysis far away, the molecule, metallics and the organic macromolecule that in planar water, disperse in a large number.
The micro-electrolysis material that micro-electrolysis process adopts is traditionally generally iron filings and charcoal, before use, to add soda acid activation, in the process of using, being easy to passivation hardens, again because iron and charcoal are physical contacts, between be easy to form sealing coat micro-electrolysis can not be proceeded and ineffective, this has caused changing continually micro-electrolysis material, and not only the large cost height of workload also affects treatment effect and the efficiency of waste water.In addition, traditional micro-electrolysis material surface-area is too little also makes wastewater treatment need long time, has increased ton water cost of investment, and this has all had a strong impact on utilization and the popularization of micro-electrolysis process.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of multiple catalyzing iron-carbon micro-electrolysis filler and preparation method thereof, under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst, the Trinitarian microbattery of--non-ferrous metal--gac group that formed iron, iron carbon microbattery potential difference is increased, speed of response is faster, and reaction ratio is controlled, pollutent contacts ratio and increases three times with microbattery, sewage oxidation processing efficiency increases 2-3 doubly, due to no longer directly contact between iron atom, so no longer form the phenomenon that hardens, without changing or regeneration filler, preparation method is simple.
Technical scheme of the present invention is:
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
Iron powder 55-75 part, activity charcoal powder 10-30 part, nonferrous metal powder catalyst A 5-20 part, nonferrous metal powder catalyst B 5-10 part and organic catalyst C 5-10 part;
Preferably, 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C are 5 parts;
Preferably, 68 parts of iron powders, 14 parts of activity charcoal powders, 8 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C are 5 parts;
Wherein, described ferrous powder granules diameter is 60-120 order, is preferably 70 orders;
Described activity charcoal powder particle diameter is 100-160 order, is preferably 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 100-140 order, is preferably 120 orders;
The particle diameter of described nonferrous metal powder catalyst B is 100-140 order, is preferably 120 orders;
The particle diameter of described organic catalyst C is 80-120 order, is preferably 90 orders;
Described nonferrous metal powder catalyst A comprises aluminium, copper or palladium etc., is preferably palladium or copper;
Described nonferrous metal powder catalyst B comprises titanium, rhodium or zinc etc., preferably titanium or zinc;
Described organic catalyst C comprises carbonate, silicate or borate, is preferably silicate or borate.
Further, described multiple catalyzing iron-carbon micro-electrolysis filler also contains binding agent, and described binding agent is black earth binding agent, and described binding agent accounts for the 5-10% of described filler gross weight.
The preparation method of above-mentioned multiple catalyzing iron-carbon micro-electrolysis filler, comprises the following steps:
(1) according to aforementioned proportion, weigh each component;
(2) load weighted each component is mixed, at the pressure of roller bearing pressing machine 250KN, depress to ellipse;
(3) at temperature 30-80 ℃, dry 24 hours at the beginning of one-step forming;
(4) at high temperature 850-1050 ℃, fill sintering 4-6 hour under nitrogen condition, cooling aftershaping.
The invention has the advantages that: multiple catalyzing iron-carbon micro-electrolysis filler of the present invention has solved traditional iron filings and easily hardened, and the excessive uncontrollable speed of response of microbattery reaction and cause reacting rear mud and increase the drawback of three or four times, simultaneously under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst,--non-ferrous metal (organic catalyst)--Trinitarian microbattery of gac group that formed iron, reduced the contact resistance between iron carbon, the maximum potential of bringing into play to greatest extent between iron carbon is poor, actual electrical potential difference after the contact of iron carbon microbattery is increased, speed of response is faster, and reaction ratio is controlled, pollutent contacts ratio and increases three times with microbattery, sewage oxidation processing efficiency increases 2-3 doubly, due to no longer directly contact between iron atom, so no longer form the phenomenon that hardens, without changing or regeneration filler.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Except as otherwise noted, the percentage ratio adopting in the present invention is weight percentage.
Embodiment 1
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 70 parts of iron powders, 10 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 120 orders;
Described activity charcoal powder particle diameter is 100 orders;
The particle diameter of described nonferrous metal powder catalyst A is 100 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is aluminium;
Described nonferrous metal powder catalyst B comprises titanium;
Described organic catalyst C comprises carbonate.
Embodiment 2
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 58 parts of iron powders, 12 parts of activity charcoal powders, 15 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 130 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is copper;
Described nonferrous metal powder catalyst B is rhodium;
Described organic catalyst C comprises silicate.
Embodiment 3
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 68 parts of iron powders, 14 parts of activity charcoal powders, 8 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 110 orders;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is palladium;
Described nonferrous metal powder catalyst B is zinc zinc;
Described organic catalyst C is borate.
Embodiment 4
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C.
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 100 orders;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80;
Described nonferrous metal powder catalyst A is copper;
Described nonferrous metal powder catalyst B is zinc;
Described organic catalyst C is silicate.
Embodiment 5
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 55 parts of iron powders, 10 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 60;
Described activity charcoal powder particle diameter is 100;
The particle diameter of described nonferrous metal powder catalyst A is 100;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80;
Described nonferrous metal powder catalyst A is aluminium
Described nonferrous metal powder catalyst B is titanium;
Described organic catalyst C is carbonate.
Embodiment 6
A multiple catalyzing iron-carbon micro-electrolysis filler, described filler is mainly grouped into by the one-tenth of following mass parts:
10 parts of 75 parts of iron powders, 30 parts of activity charcoal powders, 20 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 120 orders;
Described activity charcoal powder particle diameter is 160 orders;
The particle diameter of described nonferrous metal powder catalyst A is 140 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 120 orders;
Described nonferrous metal powder catalyst A is palladium;
Described nonferrous metal powder catalyst B is rhodium;
Described organic catalyst C is borate.
Embodiment 7
A kind of preparation method of multiple catalyzing iron-carbon micro-electrolysis filler, first with 55-75 object primary particle shape iron powder and particle diameter, be that 80-120 object non-ferrous metal powder A and particle diameter are 100-140 object non-ferrous metal powder B, in the ratio mix and blend of mass parts 55-75 ︰ 5-20 ︰ 5-10 30 minutes, make it even mixing, then add 100-160 object Powdered Activated Carbon 10-30 part, mix and blend 20 minutes, finally adding particle diameter 80-120 object organic catalyst C 5-10 part stirs 20 minutes, make metal-powder catalyzer and organic catalyst evenly be enclosed in around iron powder, by the 5-10% of above total mass, add black earth binding agent, after being uniformly mixed, send into roller bearing pressing machine, at the pressure of 250-350KN, depress to the oval ball of 2 * 1.5 centimetres.Dry under field conditions (factors) 72 hours or 30-80 degrees celsius under dry 24 hours, sintering 4-6 hour in the retort furnace of inflated with nitrogen then, cooling is stand-by after 24 hours naturally.
Experiment effect comparison:
Electrolysis filler described in above-described embodiment 1-6 exists: iron carbon microbattery potential difference, speed of response raising ratio, color removal ratio, pollutent contact testing of the aspects such as ratio, sewage oxidation processing efficiency (COD removes ratio %) with microbattery, and contrast with traditional electrolysis filler, other condition is identical, the results are shown in following table:
By upper table, can find out, multiple catalyzing iron-carbon micro-electrolysis filler of the present invention has solved traditional iron filings and has easily hardened, and the excessive uncontrollable speed of response of microbattery reaction and cause reacting rear mud and increase the drawback of three or four times, simultaneously under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst,--non-ferrous metal (organic catalyst)--Trinitarian microbattery of gac group that formed iron, iron carbon microbattery potential difference is increased, speed of response is faster, and reaction ratio is controlled, pollutent contacts ratio and increases three times with microbattery, sewage oxidation processing efficiency increases 2-3 doubly, due to no longer directly contact between iron atom, so no longer form the phenomenon that hardens, without changing or regeneration filler, although and above 6 routine embodiment effects are slightly had any different but have all reached good treatment effect.
In each embodiment of the present invention, chemical industry material used is material used in the production of this area, all can from market, obtain, and can not exert an influence for production result;
The various device adopting in the present invention, is the conventional equipment using in the production technique of this area, and operation of each equipment, parameter etc. all carry out according to routine operation, there is no special feature.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a multiple catalyzing iron-carbon micro-electrolysis filler, is characterized in that: described filler is mainly grouped into by the one-tenth of following mass parts:
Iron powder 55-75 part, activity charcoal powder 10-30 part, nonferrous metal powder catalyst A 10-30 part, nonferrous metal powder catalyst B 5-10 part and organic catalyst C 5-10 part;
Wherein, described ferrous powder granules diameter is 60-120 order;
Described activity charcoal powder particle diameter is 100-160 order;
The particle diameter of described nonferrous metal powder catalyst A is 100-140 order;
The particle diameter of described nonferrous metal powder catalyst B is 100-140 order;
The particle diameter of described organic catalyst C is 80-120 order;
Described nonferrous metal powder catalyst A is aluminium, copper or palladium;
Described nonferrous metal powder catalyst B is titanium or rhodium;
Described organic catalyst C is carbonate, silicate or borate.
2. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that, described filler is mainly grouped into by the one-tenth of following mass parts:
5 parts of 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C.
3. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that: described ferrous powder granules diameter is 70 orders.
4. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that: described activity charcoal powder particle diameter is 110 orders.
5. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that: the particle diameter of described nonferrous metal powder catalyst A is 120 orders.
6. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that: the particle diameter of described nonferrous metal powder catalyst B is 120 orders.
7. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, is characterized in that: the particle diameter of described organic catalyst C is 90 orders.
8. a preparation method for multiple catalyzing iron-carbon micro-electrolysis filler as claimed in claim 1, is characterized in that, comprises the following steps:
(1) according to aforementioned proportion, weigh each component;
(2) load weighted each component is mixed, at the pressure of roller bearing pressing machine 250KN, depress to ellipse;
(3) at temperature 30-80 ℃, dry 24 hours at the beginning of one-step forming;
(4) at high temperature 850-1050 ℃, fill sintering 4-6 hour under nitrogen condition, cooling aftershaping.
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| CN102659221B (en) * | 2012-05-10 | 2013-08-28 | 深圳市地大东江环境研究院 | Electro-catalytic oxidation material for wastewater treatment, preparation method and application |
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