CN103028369A - Composite adsorbent packing and fabrication method thereof - Google Patents
Composite adsorbent packing and fabrication method thereof Download PDFInfo
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- CN103028369A CN103028369A CN2012105708845A CN201210570884A CN103028369A CN 103028369 A CN103028369 A CN 103028369A CN 2012105708845 A CN2012105708845 A CN 2012105708845A CN 201210570884 A CN201210570884 A CN 201210570884A CN 103028369 A CN103028369 A CN 103028369A
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Abstract
The invention discloses composite adsorbent packing and a fabrication method thereof. The composite adsorbent packing comprises the following raw materials: coal ash, bentonite and kaolin. The fabrication method comprises the steps of proportioning the raw materials by weight percentage, mixing and stirring uniformly to fabricate round balls, airing, sintering, taking out, cooling to room temperature, and obtaining the composite adsorbent packing. The packing has the advantages: 1) the packing is pelletized into the balls, feeding is simple, and no raised dust pollution is caused, 2) no mechanical stirring is needed in an adsorption process, and stirring and mass transferring can be realized by using a water inlet way or regulating a flow rate, 3) solid-liquid separation is easy, and no sedimentation is needed, and 4) the specific surface area is large and reaches above 25m<2>/g, the opening porosity reaches 35-41%, the packing is good in physical stability, the wear rate is less than 1%, and the packing is high in acid and alkaline resistance. The adsorbent is spherical, suitable for pretreatment of organic wastewater; the COD (chemical oxygen demand) removing rate of the treated organic wastewater reaches above 60%; and the chromaticity can be reduced to below 20.
Description
Technical field
The present invention relates to a kind of compound-type adsorbent filler and preparation method thereof.
Background technology
Absorption method is to process a kind of method commonly used of chemical industry colorful wastewater, and according to different adsorptive selectivities and mechanism, adsorbent commonly used has active carbon, diatomite, bentonite, flyash, activated alumina, molecular sieve etc. at present.Wherein bentonite and flyash wide material sources are with low cost, have larger adsorption capacity and are widely adopted.
The bentonite main component is silica and alchlor, contains simultaneously the metal ions such as a small amount of magnesium, potassium, sodium, calcium, iron, and belonging to crystalline form is the hydrous alumino silicates mineral of 2:1 three-decker.Bentonite possesses the characteristics of hydrophilic oleophobic, and the silicon ion of high price and aluminium ion can be by other at a low price cation replacements, and this isomorphous substitution causes the bentonite lamella negative electrical charge superfluous, thereby makes it need to be by the free NH of absorption
4 +, Na
+, Ca
2+, Mg
2+, Cu
2+, Cr
3+Come balance Deng cation, to keep its electroneutral.Therefore, bentonite can be widely used in the processing of organic amine waste water and heavy metal wastewater thereby.
The main chemical compositions of flyash is: SiO
2, Al
2O
3, FeO, Fe
2O
3, CaO, TiO
2, MgO, K
2O, Na
2O, MnO
2Deng, and contain a certain amount of residual carbon.Flyash is mainly derived from thermal power plant and the heating boiler take coal dust as fuel, is used as for a long time solid waste.Because having the characteristics such as loose porous, specific area is large, surface-active point is many, the physical and chemical adsorption capacity is large, it is applied to field of waste water treatment.
Present above-mentioned two kinds of methods that the many employings of adsorbent add separately, form is mainly powdery, needs to realize Separation of Solid and Liquid by modes such as centrifugal or natural subsidence after having caused absorption, has the problem of length consuming time, complex process, also needs to increase extras.
Summary of the invention
The invention provides a kind of compound-type adsorbent filler, it is characterized in that raw material comprises flyash, bentonite and kaolin, each compositions in weight percentage of raw material is prepared, mixing and stirring is also made ball, dry, then sintering takes out and is cooled to room temperature, namely gets compound-type adsorbent filler of the present invention.The percentage by weight of each component is flyash 20%-60%, bentonite 22.5%-65%, kaolin 15%-25%, the granularity of flyash 〉=150 orders, bentonite and kaolinic granularity 〉=200 orders, ball particle diameter 6-9mm, water spray is controlled at the 55-60% of raw material weight before the granulation, 400 ℃-600 ℃ of sintering temperatures, sintering time 30min-120min.
The purpose of this invention is to provide a kind of compound-type adsorbent filler and preparation method thereof, the present invention can be widely used in various adsorption towers and process organic wastewater, exists when solving present powdered absorbent processing waste water: 1. need the power agitating device; 2. sedimentation is slow, and the sedimentation time is long; 3. reclaim complex process; 4. problems such as easily producing airborne dust feeds intake.This filler has certain mechanical strength, and the characteristics such as also have wear-resistant, acid and alkali-resistance, specific area is large, and porosity is large can be widely used in various adsorption towers and process organic wastewaters, adsorb saturatedly to activate namely reusable at 400 ℃ of lower calcination 1h afterwards.
Advantage of the present invention: filler is a granulated into spherical, and it is simple to feed intake, without dust pollution; Adsorption process need not mechanical agitation, can utilize water intake mode or regulate flow velocity realization stirring and mass transfer; Separation of Solid and Liquid is easy, need not sedimentation; Specific area is large, and open porosity reaches 32-38%, has preferably physical stability, and wear rate is lower than 1%, and resistance to acids and bases is strong.Filler is through granulation and calcination, and the clearance of the COD of organic wastewater is reached more than 60%, and chroma removal rate reaches more than 90 %.
The specific embodiment
Used flyash derives from the coal-fired steam boiler dedusting among the present invention, and the present invention is further illustrated below in conjunction with example.
Embodiment 1: make the compound-type adsorbent filler, the raw material weight percentage that it adopts is respectively: flyash 60%, bentonite 25%, kaolin 15%.Making step is as follows:
The first step: with each component of filler percentage by weight preparation raw material on request, mixing and stirring;
Second step: the raw material that mixes is made ball, and particle diameter is controlled at 6-9 mm, and water spray is controlled at 55% of raw-material weight before the granulation, then will make the filler bead and dry;
The 3rd step: it is calcination in 600 ℃ the Muffle furnace that the filler that will dry is delivered to temperature, and roasting time is 30min, then takes out and is cooled to room temperature, namely gets compound-type adsorbent filler of the present invention, and production code member is TL-1;
The 4th step: the filler of making is detected, and the project of detection has the indexs such as loose bulk density, compacted bulk density, open porosity, bulk density, wear rate, sour molten rate.
Characterization result is as follows: the loose bulk density of this batch filler is 0.501 g/cm
3, compacted bulk density is 0.548 g/cm
3, open porosity is 38%, bulk density is 1.134 g/cm
3, wear rate is 0.69%, sour molten rate is 6.88%.
Embodiment 2: make the compound-type adsorbent filler, the raw material weight percentage that it adopts is respectively: flyash 20%, and bentonite 65%, kaolin 15%, making step is as follows:
The first step: with each component of filler percentage by weight preparation raw material on request, mixing and stirring;
Second step: the raw material that mixes is made ball, and particle diameter is controlled at 6-9 mm, and water spray is controlled at 60% of raw-material weight before the granulation, then will make the filler bead and dry;
The 3rd step: it is calcination in 600 ℃ the Muffle furnace that the filler that will dry is delivered to temperature, and roasting time is 120 min, then takes out and is cooled to room temperature, namely gets compound-type adsorbent filler of the present invention, and production code member is TL-2;
The 4th step: the filler of making is detected, and the project of detection has the indexs such as loose bulk density, compacted bulk density, open porosity, bulk density, wear rate, sour molten rate.
Characterization result is as follows: the loose bulk density of this batch filler is 0.554 g/cm
3, compacted bulk density is 0.621g/cm
3, open porosity is 37.412%, bulk density is 1.25g/cm
3, wear rate is 0.11%, sour molten rate is 8.21%.
Embodiment 3: make the compound-type adsorbent filler, the raw material weight percentage that it adopts is respectively: flyash 26%, and bentonite 49%, kaolin 25%, making step is as follows:
The first step: with each component of filler percentage by weight preparation raw material on request, mixing and stirring;
Second step: the raw material that mixes is made ball, and particle diameter is controlled at 6-9 mm, and water spray is controlled at 60% of raw-material weight before the granulation, then will make the filler bead and dry;
The 3rd step: it is calcination in 400 ℃ the Muffle furnace that the filler that will dry is delivered to temperature, and roasting time is 120 min, then takes out and is cooled to room temperature, namely gets compound-type adsorbent filler of the present invention, and production code member is TL-3;
The 4th step: the filler of making is detected, and the project of detection has the indexs such as loose bulk density, compacted bulk density, open porosity, bulk density, wear rate, sour molten rate.
Characterization result is as follows: the loose bulk density of this batch filler is 0.581 g/cm
3, compacted bulk density is 0.591 g/cm
3, open porosity is 32.83 %, bulk density is 1.200g/cm
3, wear rate is 0.31%, sour molten rate is 12.2%.
Embodiment 4: make the compound-type adsorbent filler, the raw material weight percentage that it adopts is respectively: flyash 52.5%, and bentonite 22.5%, kaolin 25%, making step is as follows:
The first step: with each component of filler percentage by weight preparation raw material on request, mixing and stirring;
Second step: the raw material that mixes is made ball, and particle diameter is controlled at 6-9mm, and water spray is controlled at 55% of raw-material weight before the granulation, then will make the filler bead and dry;
The 3rd step: it is calcination in 400 ℃ the Muffle furnace that the filler that will dry is delivered to temperature, and roasting time is 30min, then takes out and is cooled to room temperature, namely gets compound-type adsorbent filler of the present invention, and production code member is TL-4;
The 4th step: the filler of making is detected, and the project of detection has the indexs such as loose bulk density, compacted bulk density, open porosity, bulk density, wear rate, sour molten rate.
Characterization result is as follows: the loose bulk density of this batch filler is 0.579g/cm
3, compacted bulk density is 0.609g/cm
3, open porosity is 35.25%, bulk density is 1.23g/cm
3, wear rate is 0.73%, sour molten rate is 9.66%.
Embodiment 5: wastewater treatment test
Hunan waste water from pesticide factory, COD are 15000mg/L, and colourity is 200.
Get the compound-type adsorbent filler 850g that makes, be filled into diameter 6cm, in the glass reactor of high 90cm, filling highly is about 50cm, adds waste water to the 60cm scale, about 700mL; Aeration 2h at normal temperatures, aeration rate is 15L/min.
After stopping adsorption reaction, water sampling adopts the potassium bichromate Microwave Digestion to analyze rest COD; Adopt dilution method that colourity is measured, the result is shown in table 1.
Water quality situation after the table 1 waste water adsorption treatment
| Production code member | COD（mg/L） | Colourity |
| TL-1 | 5320 | 15 |
| TL-2 | 5980 | 20 |
| TL-3 | 5250 | 10 |
| TL-4 | 5833 | 20 |
Adsorb the filler roasting 1h activation under 400 ℃ of conditions after saturated, repeat 15 times after, the COD eliminating rate of absorption still can reach 60%.
Claims (2)
1. a compound-type adsorbent filler is characterized in that raw material comprises flyash, bentonite and kaolin, and product is spherical shape, particle diameter 6-9mm.
2. the preparation method of a kind of compound-type adsorbent filler according to claim 1, it is characterized in that each compositions in weight percentage of raw material is prepared, mixing and stirring is also made ball, dry, sintering, then take out and be cooled to room temperature, namely get the compound-type adsorbent filler, the percentage by weight of each component is flyash 20%-60%, bentonite 22.5%-65%, kaolin 15%-25%, the granularity of flyash 〉=150 orders, bentonite and kaolinic granularity 〉=200 orders, water spray is controlled at the 55-60% of raw material weight before the granulation, 400 ℃-600 ℃ of sintering temperatures, sintering time 30min-120min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107458A (en) * | 2015-09-11 | 2015-12-02 | 中山大学 | Kieselguhr/coal ash particle adsorbent and preparing method and application of kieselguhr/coal ash particle adsorbent |
| 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 |
| CN107970881A (en) * | 2017-10-31 | 2018-05-01 | 广东石油化工学院 | A kind for the treatment of of Organic Wastewater functionalization filler and preparation method thereof |
| CN108126652A (en) * | 2018-02-07 | 2018-06-08 | 湖南云平环保科技有限公司 | Using flyash as the water treatment agent of primary raw material |
| CN111704194A (en) * | 2020-06-30 | 2020-09-25 | 广西夏阳环保科技有限公司 | Composite sewage treatment agent based on inorganic non-metallic mineral material and application |
| CN114682209A (en) * | 2020-12-25 | 2022-07-01 | 柳州柳晶环保科技有限公司 | Method for preparing adsorbing material by using coal dust-containing casting dust and adsorbing material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641721A (en) * | 2012-04-10 | 2012-08-22 | 郭伟 | Composite spherical active carbon adsorbent |
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2012
- 2012-12-26 CN CN2012105708845A patent/CN103028369A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102641721A (en) * | 2012-04-10 | 2012-08-22 | 郭伟 | Composite spherical active carbon adsorbent |
Non-Patent Citations (1)
| Title |
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| 刘鲱等: "粉煤灰-膨润土颗粒吸附材料的制备及其处理含铅离子废水的研究", 《资源开发与市场》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107458A (en) * | 2015-09-11 | 2015-12-02 | 中山大学 | Kieselguhr/coal ash particle adsorbent and preparing method and application of kieselguhr/coal ash particle adsorbent |
| 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 |
| CN107970881A (en) * | 2017-10-31 | 2018-05-01 | 广东石油化工学院 | A kind for the treatment of of Organic Wastewater functionalization filler and preparation method thereof |
| CN107970881B (en) * | 2017-10-31 | 2021-04-13 | 广东石油化工学院 | Organic wastewater treatment functional filler and preparation method thereof |
| CN108126652A (en) * | 2018-02-07 | 2018-06-08 | 湖南云平环保科技有限公司 | Using flyash as the water treatment agent of primary raw material |
| CN111704194A (en) * | 2020-06-30 | 2020-09-25 | 广西夏阳环保科技有限公司 | Composite sewage treatment agent based on inorganic non-metallic mineral material and application |
| CN111704194B (en) * | 2020-06-30 | 2022-09-13 | 广西夏阳环保科技有限公司 | Composite sewage treatment agent based on inorganic non-metallic mineral material and application |
| CN114682209A (en) * | 2020-12-25 | 2022-07-01 | 柳州柳晶环保科技有限公司 | Method for preparing adsorbing material by using coal dust-containing casting dust and adsorbing material |
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Application publication date: 20130410 |