CN106006854A - Bentonite-based iron-carbon ceramsite filler and preparation method thereof - Google Patents
Bentonite-based iron-carbon ceramsite filler and preparation method thereof Download PDFInfo
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- CN106006854A CN106006854A CN201610496137.XA CN201610496137A CN106006854A CN 106006854 A CN106006854 A CN 106006854A CN 201610496137 A CN201610496137 A CN 201610496137A CN 106006854 A CN106006854 A CN 106006854A
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- bentonite
- iron
- carbon powder
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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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- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
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- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses bentonite-based iron-carbon ceramsite filler which mainly consists of scrap iron, activated carbon powder, bentonite and poplar wood powder. The invention also discloses a preparation method of the bentonite-based iron-carbon ceramsite filler, which comprises the following steps: uniformly mixing the sieved scrap iron, activated carbon powder, bentonite and poplar wood powder; adding water to adjust the dryness of the mixture to 80%; pressing into a mud cake; and pelletizing and firing to obtain the bentonite-based iron-carbon ceramsite filler. In the ceramsite filler disclosed by the invention, with the bentonite as a base material, the scrap iron and the activated carbon powder are pelletized and fused together through high-temperature sintering; under the effect of the poplar wood powder serving as a pore former, high-strength and internally-porous spherical ceramsite is formed; and the problems of mutual sticking of scrap iron and non-uniform distribution of iron carbon are solved, the defects of hardening and passivation of the traditional iron-carbon microelectrolysis filler are overcome, the microelectrolysis reaction efficiency is improved, the operation of filler supplementing is simplified, and the labor intensity is reduced.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to a kind of bentonite base ferrum charcoal ceramics filling, this
Invention further relates to the preparation method of this ceramics filling.
Background technology
Micro-electrolysis method is to utilize Principles of Metal Erosion to form the good process that waste water is processed by galvanic element,
Also known as internal electrolysis, Filtration with Iron Filings etc..The result of micro-electrolysis method reaction is that ferrum is become bivalence by corrosion
Iron ion enter solution, owing to iron ion has coagulation, it with pollutant in faint negative charge
There is a natural attraction between the sexes for microgranule, forms more stable flocculate and removes.This method has applied widely, process
The advantages such as effective, length in service life, with low cost and convenient operating maintenance.
Microelectrolysis processing waste water, since being born, has just caused the concern of domestic and international environmental protection researcher, has gone forward side by side
Having gone substantial amounts of research, recent years, the development of microelectrolysis processing industrial wastewater is very rapid, has been used for
Industrial wastewaters such as printing and dyeing, plating, petrochemical industry, pharmacy, gas washing, printed circuit board (PCB) production and containing
Arsenic, the process engineering of fluoride waste, and have received good economic benefit and environment protecting.Light electrolysis work
Skill has good treatment effect to the decolouring of waste water, and has the treatment of wastes with processes of wastes against one another, the advantage that operating cost is low,
Therefore will have good prospects for commercial application in China.Micro-electrolysis stuffing many employings powder the most both at home and abroad
Shape material, equipment many employings fixed-bed structure, it is characterized in simple in construction, pushes away good fluidity, but exist not
Few practicality problem: one is inefficient, and response speed is unhappy；Two is that filler easily hardens, and causes short circuit
And dead band；Three to be that iron filings supplement labor intensity big.
There is the work being primarily due to waste iron filing hardened and be passivated in conventional filler (iron filings+breeze)
Property too strong, Long contact time can be bonded to each other, and forms filler and hardens and inside reactor channel；
And iron filings are different with the density of carbon slag, along with current and the impact of air-flow, ferrum charcoal is equally distributed originally
State can be broken, and the iron filings that density is bigger can sink to bottom, and the smaller carbon slag of density can rise
To top, cause filler distribution uneven, and the breeze between iron filings has encouraged iron filings after separating further
Mutually bonding.
Summary of the invention
It is an object of the invention to provide a kind of bentonite base ferrum charcoal ceramics filling, solve existing conventional filler
There is the problem hardening and being passivated.
It is a further object to provide the preparation method of a kind of bentonite base ferrum charcoal ceramics filling.
The technical solution adopted in the present invention is, a kind of bentonite base ferrum charcoal ceramics filling, key component by
Iron filings, active carbon powder, bentonite and poplar wood powder composition.
The feature of the present invention also resides in,
Iron filings, active carbon powder, bentonite and poplar wood powder mass ratio be 6～10:19～40:19.5～
40:1.
Another technical scheme of the present invention is, the preparation of a kind of bentonite base ferrum charcoal ceramics filling
Method, specifically implements according to following steps:
Step 1, screens iron filings, active carbon powder and bentonite through 100 mesh dusting covers, to remove
Bigger granule；
Step 2, the iron filings after sieving, active carbon powder, bentonite, poplar wood powder mix homogeneously,
Add water regulation mixture mass dryness fraction be 80%, be then pressed into mud cake；
Step 3, mud cake step 2 obtained is sent into comminutor, is made the spherical of diameter 10-15mm and fill out
Material, then calcination, obtain spherical iron charcoal ceramics filling.
The feature of the present invention also resides in,
In step 2 iron filings, active carbon powder, bentonite and poplar wood powder mass ratio be 6～10:19～
40:19.5～40:1.
In step 3, calcination is that Ball-type packing is put into atmosphere furnace, is passed through nitrogen as protection gas, 600～
Calcination 30～60min at 800 DEG C.
The invention has the beneficial effects as follows, ceramics filling of the present invention, iron filings and active carbon powder with bentonite are
Base material, is combined together by high temperature sintering after pelletize, under the effect as pore creating material of the poplar wood powder,
Form intensity height and the spherical haydite of internal porous, solve iron filings and mutually bond and ferrum charcoal skewness
Problem, both overcome the drawback that conventional iron charcoal micro-electrolysis stuffing hardens, is passivated, improved micro-electrolysis reaction
Efficiency, in turn simplify the operation of additional fillers, reduces labor intensity.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
Bentonite base ferrum charcoal ceramics filling of the present invention, key component is by iron filings, active carbon powder, bentonite
Form with poplar wood powder.
Iron filings, active carbon powder, bentonite and poplar wood powder mass ratio be 6～10:19～40:19.5～
40:1.
The preparation method of above-mentioned bentonite base ferrum charcoal ceramics filling, specifically implements according to following steps:
Step 1, screens iron filings, active carbon powder and bentonite through 100 mesh dusting covers, to remove
Bigger granule；
Step 2, the iron filings after sieving, active carbon powder, bentonite, poplar wood powder mix homogeneously,
Wherein iron filings, active carbon powder, bentonite and poplar wood powder mass ratio be 6～10:19～40:19.5～
40:1, the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake；
Step 3, mud cake step 2 obtained is sent into comminutor, is made the spherical of diameter 10-15mm and fill out
Material, then Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, at 600～800 DEG C burn
Burn 30～60min, obtain spherical iron charcoal ceramics filling.
Embodiment 1
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 10:40:40:
1 uniformly mixes, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 60min at 800 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 17.58%, and crushing strength is 202.3N.
The spherical iron charcoal ceramics filling that embodiment 1 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
56.12%, chroma removal rate 57.87%.
Embodiment 2
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 8:30:25:
1 uniformly mixes, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 40min at 700 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 21.26%, and crushing strength is 186.4N.
The spherical iron charcoal ceramics filling that embodiment 2 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
57.34%, chroma removal rate 58.76%.
Embodiment 3
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 9:25:30:
1 uniformly mixes, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 60min at 600 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 25.13%, and crushing strength is 174.2N.
The spherical iron charcoal ceramics filling that embodiment 3 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
59.02%, chroma removal rate 60.25%.
Embodiment 4
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 12:38:39:
2 uniformly mix, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 30min at 800 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 22.59%, and crushing strength is 193.2N.
The spherical iron charcoal ceramics filling that embodiment 4 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
58.24%, chroma removal rate 59.96%.
Embodiment 5
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 10:19:25:
1 uniformly mixes, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 30min at 700 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 26.77%, and crushing strength is 183.5N.
The spherical iron charcoal ceramics filling that embodiment 5 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
59.68%, chroma removal rate 60.85%.
Embodiment 6
(1) get the raw materials ready
Iron filings, active carbon powder and bentonite are screened through 100 mesh dusting covers, to remove bigger
Grain.
(2) mix and cake processed
Iron filings, active carbon powder, bentonite and poplar wood powder after sieving are with mass ratio 12:38:39:
2 uniformly mix, and the mass dryness fraction of the regulation mixture that adds water is 80%, is then pressed into mud cake.
(3) pelletize
Mud cake is sent into comminutor, makes the Ball-type packing of diameter 10-15mm.
(4) calcination
Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas, calcination 50min at 600 DEG C,
It is fired into spherical iron charcoal ceramics filling.
The filler gas porosity prepared is 27.37%, and crushing strength is 168.9N.
The spherical iron charcoal ceramics filling that embodiment 6 obtains is applied to waste water and processes, and its technological process is: pH
Regulation → micro-electrolysis reaction → pH readjustment → coagulating sedimentation, first with sulphuric acid by CODcr be
120mg/L, colourity be the pH regulator of the pending waste water of 120 times be 5.0, enter micro-electrolysis reactor
Reacting, spherical iron charcoal haydite consumption is 3g/L, and the response time is 30min；After reaction terminating, use
The pH regulator of light electrolysis water outlet is 7.5 by NaOH, adds the PAM that consumption is 0.5mg/L and mixes
Solidifying reaction, response time 8min, reacted wastewater sedimentation 2h, it is achieved mud-water separation, supernatant is i.e.
Final outflow water for this technological process.Through the waste water that above-mentioned technological process processes, CODcr clearance
61.76%, chroma removal rate 62.13%.
Claims (5)
1. a bentonite base ferrum charcoal ceramics filling, it is characterised in that key component is by iron filings, activated carbon
Powder, bentonite and poplar wood powder composition.
Bentonite base ferrum charcoal ceramics filling the most according to claim 1, it is characterised in that iron filings,
Active carbon powder, bentonite and poplar wood powder mass ratio are 6～10:19～40:19.5～40:1.
3. the preparation method of a bentonite base ferrum charcoal ceramics filling, it is characterised in that specifically according to following
Step is implemented:
Step 1, screens iron filings, active carbon powder and bentonite through 100 mesh dusting covers, to remove
Bigger granule；
Step 2, the iron filings after sieving, active carbon powder, bentonite, poplar wood powder mix homogeneously,
Add water regulation mixture mass dryness fraction be 80%, be then pressed into mud cake；
Step 3, mud cake step 2 obtained is sent into comminutor, is made the spherical of diameter 10-15mm and fill out
Material, then calcination, obtain spherical iron charcoal ceramics filling.
The preparation method of bentonite base ferrum charcoal ceramics filling the most according to claim 3, its feature exists
In, in step 2 iron filings, active carbon powder, bentonite and poplar wood powder mass ratio be 6～10:19～
40:19.5～40:1.
5., according to the preparation method of the bentonite base ferrum charcoal ceramics filling described in claim 3 or 4, it is special
Levying and be, in step 3, calcination is that Ball-type packing is put into atmosphere furnace, be passed through nitrogen as protection gas,
Calcination 30～60min at 600～800 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381675A (en) * | 2017-08-31 | 2017-11-24 | 太仓雄鹰皮具有限公司 | Inexpensive sewage-treating agent of garment material production environmental protection and preparation method thereof |
| CN108435197A (en) * | 2018-03-14 | 2018-08-24 | 兰州交通大学 | A kind of efficient water process ferrimanganic catalytic metal support material and preparation method thereof |
| CN114538613A (en) * | 2022-01-28 | 2022-05-27 | 长安大学 | Double-filler denitrification biological method for reducing nitrous oxide emission and application device |
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| CN1994917A (en) * | 2006-12-07 | 2007-07-11 | 西南石油大学 | Process for preparing highly effective Fe/C microelectrolysis water treating agent |
| CN103523868A (en) * | 2013-10-13 | 2014-01-22 | 陕西盛迈石油有限公司 | Preparation method of water-treatment iron-carbon micro-electrolysis agent |
| CN104045130A (en) * | 2014-06-23 | 2014-09-17 | 中国科学院重庆绿色智能技术研究院 | Bentonite-Fe-C composite water treatment agent and preparation method and application thereof |
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Patent Citations (3)
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| CN1994917A (en) * | 2006-12-07 | 2007-07-11 | 西南石油大学 | Process for preparing highly effective Fe/C microelectrolysis water treating agent |
| CN103523868A (en) * | 2013-10-13 | 2014-01-22 | 陕西盛迈石油有限公司 | Preparation method of water-treatment iron-carbon micro-electrolysis agent |
| CN104045130A (en) * | 2014-06-23 | 2014-09-17 | 中国科学院重庆绿色智能技术研究院 | Bentonite-Fe-C composite water treatment agent and preparation method and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381675A (en) * | 2017-08-31 | 2017-11-24 | 太仓雄鹰皮具有限公司 | Inexpensive sewage-treating agent of garment material production environmental protection and preparation method thereof |
| CN108435197A (en) * | 2018-03-14 | 2018-08-24 | 兰州交通大学 | A kind of efficient water process ferrimanganic catalytic metal support material and preparation method thereof |
| CN114538613A (en) * | 2022-01-28 | 2022-05-27 | 长安大学 | Double-filler denitrification biological method for reducing nitrous oxide emission and application device |
| CN114538613B (en) * | 2022-01-28 | 2023-10-27 | 长安大学 | Double-filler denitrification biological method for reducing nitrous oxide emission and application device |
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Application publication date: 20161012 |
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