CN105502588A - Iron-carbon filler pretreated by micro-electrolysis of industrial wastewater and preparation method thereof - Google Patents
Iron-carbon filler pretreated by micro-electrolysis of industrial wastewater and preparation method thereof Download PDFInfo
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- CN105502588A CN105502588A CN201510832740.6A CN201510832740A CN105502588A CN 105502588 A CN105502588 A CN 105502588A CN 201510832740 A CN201510832740 A CN 201510832740A CN 105502588 A CN105502588 A CN 105502588A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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Abstract
The invention discloses iron-carbon filler pretreated by micro-electrolysis of industrial wastewater and a preparation method thereof. The iron-carbon filler is formed by reducing iron powder, active carbon and attapulgite, wherein mass ratio of the reducing iron powder to the active carbon is 1:1-9, and addition of the attapulgite accounts for 10-40% of total mass of the reducing iron powder and the active carbon. The iron-carbon filler is in a sphere shape, has no hardening and passivation phenomena, does not use any chemical binder, and employs the attapulgite. While in use, the iron-carbon filler is stable, cannot be hydrolyzed, has absorption effect, and has the advantages of low sintering temperature, high activity, large contact area with waste water, and good processing effect. The granular filler is dispersed in the waste water, iron powder and powdered carbon flow out with the waste water to an outside part of a reactor, the filler should be regularly added to the reactor, replacement of the filler is not required, operation convenience is increased, labor intensity is reduced, technological process is simplified, and the method has industrial feasibility.
Description
Technical field
This explanation relates to trade effluent microelectrolysis processing filler, the particularly iron carbon filler of trade effluent light electrolysis, and prepare the method for iron carbon filler of this trade effluent microelectrolysis processing, belong to technical field of waste water processing, the preprocessing technical field of especially high COD used water difficult to degradate.
Background technology
According to the display of " national Environmental statistics publication " statistics, to China's waste water total release in 2012 684.8 hundred million tons, wherein discharged volume of industrial waste water 221.6 hundred million tons, account for 32.3% of wastewater emission amount, and papermaking, chemical industry, weaving, iron and steel add up to discharge accounting to be about 48%, become the topmost discharge of trade effluent and originate.Wastewater from chemical industry concentration is high, complicated component, and containing many hardly degraded organic substances and biodegradability low, these organism remained in water all have very large harm to the healthy of the mankind and living environment.The method of wastewater treatment is more, can be divided into the large class of Physical, chemical method, physico-chemical processes and biological process four by its action principle.In trade effluent, pollutant component is extremely complicated various, and any one treatment process is all difficult to reach the object purified completely, and usually wants several method to form treatment system, just can reach processing requirements.
Micro-electrolysis method also known as Inner electrolysis technology, have applied widely, treatment effect good, with low cost, floor space is little, material is easyly easy to get, device is easy to the advantage such as regularization and industrialization, therefore micro-electrolysis method is widely applied in Waste Water Treatment.In addition, its energy consumption is low, utilizes waste iron filing, charcoal etc. to be raw material, has the meaning of the treatment of wastes with processes of wastes against one another.This technology starts from 20 century 70s, comes into one's own at first in countries such as U.S., days, engineering experience existing certain at present, the research in China this field from the eighties in 20th century.In recent years, this technology was applied in the process of the waste water such as printing and dyeing, plating, petrochemical complex, pharmacy more and more, especially the waste water such as high toxicity, high COD, high chroma.Filler is made up of iron and carbon, when filler be immersed in have in conductivity waste water time, iron is anode, and carbon is negative electrode, forms numerous micro-galvanic cell, has added gac in system, can form macro etch battery; In addition, also added attapulgite in system, part is resolved into micromolecular organism by micro-electrolysis reaction and can directly be adsorbed by attapulgite, and this also further promotes micro-electrolysis reaction.And traditional micro electrolysis tech is in application process, filler easily hardens, and affects treatment effect, and micro-electrolysis reactor wants frequent back flushing, and filler needs normal replacing, therefore limits the widespread use of this technology.Traditional iron carbon filler preparation condition is harsh, and the raw material of employing is uneven, and sintering temperature is too high causes oxidation of iron powder, thus makes that the activity of iron carbon filler is low, the life-span is short.
Summary of the invention
The object of the invention is to: for the deficiencies in the prior art, iron carbon filler of a kind of trade effluent pre-micro-electrolysis disposal and preparation method thereof is provided, improve activity and the stability of iron carbon filler, process simplification, reduce labour intensity, there is commercial viability.
The present invention adopts following technical solution to realize: this iron carbon filler is formed by reductibility iron powder, gac and attapulgite, the mass ratio of reductibility iron powder and gac is 1:1 ~ 9, and the addition of attapulgite is 10% ~ 40% of reductibility iron powder and gac total mass.
The preparation method of above-mentioned iron carbon filler comprises following steps:
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 200 ~ 400 DEG C of roasting 30 ~ 120min in sintering oven of step 2. gained, obtain iron carbon filler.
Wherein, described step 2. in the particle diameter of particle of balling-up be 0.5-2.0cm.
Advantage of the present invention is as follows:
1. the iron carbon filler of trade effluent pre-micro-electrolysis disposal of the present invention without hardening, passivation phenomenon;
2. do not use Chemical Felter, adopt attapulgite, stablize during use, be not hydrolyzed and have adsorption, sintering temperature is low, and iron powder is not easily oxidized at this temperature, thus improves the utilization ratio of iron powder and the activity of iron carbon filler;
3. iron carbon filler is spherical in shape, and large with the contact area of waste water, treatment effect is good; Iron carbon evenly spreads in waste water, and the distinctive ratio of iron carbon keeps balance, thus improves treatment effect further;
4. granular filler of the present invention is distributed to iron powder in waste water with carbon dust with outside waste water outflow reactor, only needs regularly to reactor additional fillers, and changes filler without the need to clear pond, improve operation conveniency, reduce labour intensity, simplify technological process, have more commercial viability.Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in detail, but they do not form limitation of the invention, be only citing.
embodiment 1:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:1, and the addition of attapulgite is 10% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 200 DEG C of roasting 120min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 2:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:3, and the addition of attapulgite is 20% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 250 DEG C of roasting 90min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 3:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:5, and the addition of attapulgite is 30% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 300 DEG C of roasting 70min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 4:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:7, and the addition of attapulgite is 40% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 350 DEG C of roasting 50min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 5:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:9, and the addition of attapulgite is 40% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 400 DEG C of roasting 30min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 6:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:7, and the addition of attapulgite is 20% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 400 DEG C of roasting 90min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
embodiment 7:iron carbon filler is prepared according to following steps
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes; The mass ratio of reductibility iron powder and gac is 1:3, and the addition of attapulgite is 25% of reductibility iron powder and gac total mass;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 300 DEG C of roasting 60min in sintering oven of step 2. gained, obtain iron carbon filler, the particle diameter of the particle of balling-up is 0.5-2.0cm.
test example:wastewater treatment COD(chemical oxygen demand (COD)) for 45442mg/L and pH be the waste water of 1.82, when control condition is: to be 1:1, pH be 2.0 for waste water and iron carbon filler mass ratio of the present invention, reaction times 60-90min, the COD(chemical oxygen demand (COD) of waste water) be reduced to about 15000mg/L.
Technical scheme of the present invention is not limited to above-described embodiment, and other embodiment that technical scheme according to the present invention obtains all should fall within the scope of protection of the present invention.
Claims (3)
1. the iron carbon filler of trade effluent pre-micro-electrolysis disposal, it is characterized in that: this iron carbon filler is formed by reductibility iron powder, gac and attapulgite, the mass ratio of reductibility iron powder and gac is 1:1 ~ 9, and the addition of attapulgite is 10% ~ 40% of reductibility iron powder and gac total mass.
2. the preparation method of the iron carbon filler of trade effluent pre-micro-electrolysis disposal according to claim 1, is characterized in that it comprises following steps:
1. batch mixing: iron powder, gac, concave and convex rod stone powder are added in mixer by weight and mixes;
2. balling-up: the raw material that step is 1. mixed is joined balling-up in tablets press;
3. roasting is shaping: by balling-up 200 ~ 400 DEG C of roasting 30 ~ 120min in sintering oven of step 2. gained, obtain iron carbon filler.
3. the preparation method of the iron carbon filler of trade effluent pre-micro-electrolysis disposal according to claim 2, is characterized in that: described step 2. in the particle diameter of particle of balling-up be 0.5-2.0cm.
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Cited By (5)
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| CN107129014A (en) * | 2017-06-15 | 2017-09-05 | 中科院广州能源所盱眙凹土研发中心 | The preparation method of nano iron-carbon micro-electrolytic filler |
| CN108609694A (en) * | 2018-04-03 | 2018-10-02 | 浙江师范大学 | The preparation method of iron-carbon micro-electrolysis filler |
| CN108658323A (en) * | 2018-06-25 | 2018-10-16 | 江苏宜裕环保科技有限公司 | A kind of intensifying method of high-concentration organic chemical wastewater pretreating process |
| CN110642338A (en) * | 2019-10-30 | 2020-01-03 | 深圳杜尔环境科技有限公司 | Sewage nitrogen and phosphorus removal filler and preparation method thereof |
| CN112047436A (en) * | 2020-08-21 | 2020-12-08 | 中国科学院广州能源研究所 | Method for preparing micro-electrolysis filler from oil sludge pyrolysis residue and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129014A (en) * | 2017-06-15 | 2017-09-05 | 中科院广州能源所盱眙凹土研发中心 | The preparation method of nano iron-carbon micro-electrolytic filler |
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| CN108609694B (en) * | 2018-04-03 | 2021-03-26 | 浙江师范大学 | Preparation method of iron-carbon micro-electrolysis filler |
| CN108658323A (en) * | 2018-06-25 | 2018-10-16 | 江苏宜裕环保科技有限公司 | A kind of intensifying method of high-concentration organic chemical wastewater pretreating process |
| CN108658323B (en) * | 2018-06-25 | 2021-11-09 | 江苏宜裕环保科技有限公司 | Strengthening method of high-concentration organic chemical wastewater pretreatment process |
| CN110642338A (en) * | 2019-10-30 | 2020-01-03 | 深圳杜尔环境科技有限公司 | Sewage nitrogen and phosphorus removal filler and preparation method thereof |
| CN112047436A (en) * | 2020-08-21 | 2020-12-08 | 中国科学院广州能源研究所 | Method for preparing micro-electrolysis filler from oil sludge pyrolysis residue and application thereof |
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Application publication date: 20160420 |