CN105693277A - Iron-tailing porous material as microbial ceramsite filtering material, preparation method of iron-tailing porous material and application of iron-tailing porous material - Google Patents
Iron-tailing porous material as microbial ceramsite filtering material, preparation method of iron-tailing porous material and application of iron-tailing porous material Download PDFInfo
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Abstract
The invention relates to an iron-tailing porous material as a microbial ceramsite filtering material, a preparation method of the iron-tailing porous material and application of the iron-tailing porous material. The material comprises an iron-tailing porous material and microbes loaded by the porous material, wherein the porous material is prepared from the following raw materials in percentage by mass: 65% to 85% of iron tailings, 6% to 19% of clay, 4% to 12% of pore forming agent, 1% to 6% of calcium carbonate, and the sum of mass percent of all the ingredients is 100%. According to the iron-tailing porous material as the microbial ceramsite filtering material, provided by the invention, the porosity can reach over 40%, the specific surface area is larger than 5.0m<2>/g, and the crushing force is smaller than 0.8kN; by a loaded microbe optimizing process, the prepared iron-tailing porous material as the microbial ceramsite filtering material has the organic matter degradation effect that the COD removal ratio is 60% or more.
Description
Technical field
The invention belongs to ceramic grain filter field, be specifically related to a kind of iron tailings porous material being used as microorganism ceramic grain filter and its preparation method and application。
Background technology
The development of steel and iron industry so that the accumulating amount cumulative year after year of iron ore tailings, according to incompletely statistics, has developed more than 8000, the mine of foundation, and accumulation mine tailing total amount is up to 19.7 hundred million tons。These mine tailings are mostly taken as garbage to be stacked at for a long time in Tailings Dam, do not occupy substantial amounts of agriculture, woods soil, but also destroy forest, landforms, vegetation and natural landscape, cause soil erosion, the deterioration of the ecological environment。For sustainable development more scientifically and rationally, development of resources and environmental conservation should be coordinated to enter altogether, therefore, greatly develop the comprehensive utilization of resource of tailings, and ecological environment, raising resource utilization is particularly important。
The digestibility and utilization of iron tailings mainly building materials, pave the way, in the production such as cement, refractory material, but due to iron tailings complicated component, simple processing directly utilizes the effect that can't reach to substitute completely current material at aspect of performance。As made air entrained concrete hollow brick with iron tailings for aggregate, cannot function as normal construction material owing to not reaching construction standards standard in intensity, water absorption rate, background color infiltration etc. and use；Mix as building the road roadbed filling with clay, gravel grain soil etc., owing to there is defect in water stability, weathering and plasticity etc., and the highway that cannot act as normal level uses, thus makes the resource of iron tailings recycle and be restricted。
In recent years, have research using iron tailings as major ingredient through certain processing and process, make ceramic material to make some progress for aspects such as catalytic carrier, ceramic sanitary appliance, foamed ceramicses, as Chinese invention patent " a kind of method that iron tailings is prepared into preparing ceramic clinker glaze " (CN201210587572.5) proposes a kind of method that iron tailings is prepared into preparing ceramic clinker glaze, raw material is made with iron tailings, without adding other ceramic pigments or coloring agent beyond ferrum, prepare ceramic color glaze；A kind of iron tailings far-infrared ceramic material and preparation method thereof disclosed in Chinese patent " a kind of iron tailings far-infrared ceramic material and preparation method thereof " (CN201410210975.7), it is utilize the materials such as iron tailings, clay, silicon dioxide treated and make ceramic material after sintering, as far-infrared ceramic material；And a kind of iron tailings porous ceramic film material and preparation method thereof disclosed in Chinese patent " a kind of iron tailings porous ceramic film material and preparation method thereof " (CN201410211221.3), it is utilize the materials such as iron tailings, aluminium oxide, silicon dioxide, titanium dioxide to make porous ceramic film material。Published patent or technology relate to iron tailings in the preparation of ceramic glaze, pottery, porous ceramics, porous material etc. and application technology above。The present invention utilizes iron tailings preparation iron tailings porous material being used as microorganism ceramic grain filter and preparation method thereof and application on industrial organic waste water processes, and not yet appears in the newspapers in prior art。
Summary of the invention
It is an object of the invention to propose a kind of iron tailings porous material as microorganism ceramic grain filter。This material is with iron tailings for primary raw material, by various raw material grindings, material mixing, molding, dry, sintering, porous material is obtained by relatively low sintering temperature and shorter sintering time, then again through steps such as loading microorganisms, the iron tailings porous material as microorganism ceramic grain filter is obtained。The materials application of the present invention processes in industrial organic waste water, has a good application prospect, it is possible to reach the purpose of waste recycling, and environmental conservation is significant。
The technical scheme is that,
A kind of iron tailings porous material as microorganism ceramic grain filter, this material includes the microorganism of iron tailings porous material and porous material loading；
The raw material composition of described porous material and mass percent thereof are as follows:
Each constituent mass percentage ratio sum is 100%；
Described load of microorganisms method on the porous material, comprises the following steps:
By microorganism fungus kind after course of cultivating the microorganism, obtain microorganism basis bacterium solution, at 25 DEG C, with distilled water, microorganism basis bacterium solution is diluted 10-100 times, obtain dilution bacterium solution；Iron tailings porous material is dried at 50 DEG C 1h again, take out after immersing dilution bacterium solution 24h after naturally cooling to room temperature, taking out and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, obtains being used as the iron tailings porous material of microorganism ceramic grain filter after 7-15 days。
The chemical composition of described iron tailings includes SiO2For 60-75%, TFe8-14%。
Described clay is the one in attapulgite, kaolinite, and specific surface area is 15-30m2/ g, granularity are less than the powder body of 200 orders；
Described pore creating material is the one in coal dust, powdered carbon, starch, and bulk density is 0.75-0.85t/m3, granularity is less than the powder body of 200 orders；
Described calcium carbonate is commercially available technical grade powder body calcium carbonate；
Described microorganism is one or more in the strains such as glue bacterium, pseudomonas, football shirt bacterium and bayesian sulfur bacterium,
Described course of cultivating the microorganism includes multistage expansion, nutrition cultivation and Organic substance domestication。
The preparation method of the described iron tailings porous material being used as microorganism ceramic grain filter, comprises the following steps:
(1) by iron tailings through ball mill grinding to granularity less than 200 orders；
(2) according to proportioning of improving quality, weighing iron tailings, clay, pore creating material and calcium carbonate respectively, each constituent mass percentage ratio sum is 100%, afterwards honed 200 mesh sieves of mixed powder；
(3) adding water in the mixed powder after grinding sieves, uniform stirring 30min, through granulator granulation molding, particle diameter is 3-5mm；
(4) spherolite upper step obtained is under 50-70%RH after old 24h in room temperature and humidity, puts in baking oven, at 90-120 DEG C, and dry 2-3h；
(5) more dried spherolite is put in sintering furnace, at 800-1100 DEG C, calcine 1-2h, after cooling to room temperature with the furnace, can be prepared by iron tailings porous material；Calcining heating rate is 2.0-3.0 DEG C/min；
(6) by microorganism fungus kind after course of cultivating the microorganism, obtain microorganism basis bacterium solution, at 25 DEG C, with distilled water, microorganism basis bacterium solution is diluted 10～100 times, obtain dilution bacterium solution；Iron tailings porous material is dried at 50 DEG C 1h again, take out after immersing dilution bacterium solution 24h after naturally cooling to room temperature, taking out and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, can obtain being used as the iron tailings porous material of microorganism ceramic grain filter after 7-15 days。
The application of the described iron tailings porous material as microorganism ceramic grain filter, can be applicable to industrial organic waste water and processes。
Beneficial effects of the present invention
The present invention utilizes iron tailings preparation to be used as the iron tailings porous material of microorganism ceramic grain filter, by adjusting the technical processs such as raw material grinding, material mixing, molding, dry, sintering and loading microorganisms, the iron tailings porous material being used as microorganism ceramic grain filter prepared, porosity can reach more than 40%, specific surface area is more than 5.0m2/ g, crushing force are less than 0.8kN；Again through optimizing loading microorganisms technique, it is more than 60% that organic degradation effect is reached COD clearance by the iron tailings porous material being used as microorganism ceramic grain filter prepared。Provide and a kind of solve iron tailings resource recycling, preparation has the new way of organic wastewater degraded material of good development prospect。
Accompanying drawing explanation
For the clearer elaboration purpose of the present invention, technical scheme and feature, below in conjunction with accompanying drawing, the present invention is described in further detail。
Fig. 1 is the SEM photograph of the iron tailings porous material of preparation in the embodiment of the present invention 1；
Fig. 2 is the dry of the iron tailings porous material of preparation in the embodiment of the present invention 1 and sintering temperature curve。
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is described further。
Iron tailings of the present invention is high-silicon type iron tailings, and wherein metalliferous mineral mainly includes magnetic iron ore, bloodstone and martite, and gangue mineral mainly includes quartz, is secondly chlorite, calcite and hornblend；SiO in iron tailings chemical composition2For 60-75%, TFe8-14%。
Embodiment 1
A kind of iron tailings porous material as microorganism ceramic grain filter, this material includes the microorganism of iron tailings porous material and porous material loading；
The raw material composition of described porous material and mass percent thereof are as follows:
Iron tailings porous material being used as microorganism ceramic grain filter described in the present embodiment and its preparation method and application, the iron tailings of use is the SiO originating from mining area, Chengde2Content is the iron tailings powder of 70%；Attapulgite is commercially available hydrous magnesium aluminium silicate mineral, specific surface area 30m2/ g；Calcium carbonate is commercially available pressed powder, coal dust is bulk density 0.80t/m3Commercially available prod。
The preparation method of the iron tailings porous material being used as microorganism ceramic grain filter of the present embodiment, comprises the following steps that:
(1) iron tailings is milled to granularity less than 200 orders through ball mill；
(2) iron tailings, attapulgite, coal dust, calcium carbonate are weighed respectively by the mass percent of above-mentioned each primary raw material, ball milling after each component is mixed, cross 200 mesh sieves；
(3) adding water in the above-mentioned mixed powder after ball milling sieves, uniform stirring 30min, through granulator granulation, balling-up particle diameter is 3-5mm；
(4) it is under 55%RH (relative humidity) after old (old is exactly placed certain time under specified temp and specified moisture by mixed pug) 24h by the spherolite obtained in " step (3) " in room temperature and humidity, put into baking oven at 90 DEG C, dry 3h；
(5) more dried spherolite is put in sintering furnace, at 900 DEG C, calcine 2h, iron tailings porous material after cooling to room temperature with the furnace, can be obtained。
Take commercially available football shirt bacterium dry strain 1g and be dissolved in 1L distilled water, and add Carnis Bovis seu Bubali cream 1g, glucose 10g, carbamide 5g, cultivate 72h, it is initially charged 20mg/L polyvinyl alcohol domestication 24h, add 80mg/L polyvinyl alcohol domestication 24h, bacterium solution after domestication is diluted 50 times, 10kg iron tailings porous material is dried at 50 DEG C 1h again, take out after naturally cooling to room temperature to take out after immersing dilution bacterium solution 24h and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, makes the iron tailings porous filter-material of loading microorganisms after 10 days。
Fig. 1 is the SEM photograph of iron tailings porous material, it can be seen that it is spongy that porous material surface macropore is nested with large quantity micropore from photo, is beneficial to loading microorganisms。
Fig. 2 is the dry of iron tailings porous material and sintering temperature curve, indicates that the baking temperature preparing porous material is 90-120 DEG C in figure, drying time 2-3h, sintering temperature is 800-1100 DEG C, and sintering time is 1-2h。
By the prepared iron tailings porous material being used for microorganism, detecting through thermal conductivity method TCD, porosity is 44.00%, specific surface area is 6.5m2/ g, crushing force are 0.78kN；Being inserted by the iron tailings porous filter-material 1000g being used for microorganism with in air-blowing and cylindricality reactor that circulating device, capacity are 50L, gas-water ratio is 10:1, and rate of circulating flow controls at 0.2m/s。Industrial organic waste water takes from waste water in Tianjin chemicals production enterprise biochemical treatment tank, is 496mg/L through chromium forensic chemistry oxygen demand (COD) value。Through 30min test COD value be 182mg/L, through 60min test COD value be 158mg/L, to test COD value through 90min be 126mg/L, COD clearance be 74.6.0%。
Embodiment 2
The present embodiment and embodiment 1 are distinctive in that the mass percent of iron tailings and each raw material is:
Iron tailings porous material being used as microorganism ceramic grain filter described in the present embodiment and its preparation method and application, the iron tailings of use is the SiO originating from mining area, Chengde2Content is the iron tailings powder of 75%；Kaolinite is commercially available tcrude ore；Calcium carbonate is commercially available pressed powder, carbon dust is bulk density 0.85t/m3Commercially available prod。
Iron tailings porous material being used as microorganism ceramic grain filter of the present embodiment and its preparation method and application, comprises the following steps that:
(1) iron tailings is milled to granularity less than 200 orders through ball mill；
(2) iron tailings, kaolinite, carbon dust, calcium carbonate are weighed respectively by the mass percent of above-mentioned each primary raw material, ball milling after each component is mixed, cross 200 mesh sieves；
(3) adding water in the above-mentioned mixed powder after ball milling sieves, uniform stirring 30min, through granulator granulation, balling-up particle diameter is 3-5mm；
(4) it is under 60%RH after old 24h by the spherolite obtained in " step (3) " in room temperature and humidity, puts into baking oven at 100 DEG C, dry 2.5h；
(5) more dried spherolite is put in sintering furnace, at 1000 DEG C, calcine 1.5h, after cooling to room temperature with the furnace, can obtain being used as the iron tailings porous material of microorganism ceramic grain filter。
Take commercially available football shirt bacterium dry strain 1g and be dissolved in 1L distilled water, and add Carnis Bovis seu Bubali cream 1g, glucose 10g, carbamide 5g, cultivate 72h, it is initially charged 20mg/L polyvinyl alcohol domestication 24h, add 80mg/L polyvinyl alcohol domestication 24h, bacterium solution after domestication is diluted 50 times, 10kg iron tailings porous material is dried at 50 DEG C 1h again, take out after naturally cooling to room temperature to take out after immersing dilution bacterium solution 24h and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, makes the iron tailings porous filter-material of loading microorganisms after 10 days。
By the prepared iron tailings porous material being used for microorganism, detecting through thermal conductivity method TCD, porosity is 40.00%, specific surface area is 5.5m2/ g, crushing force are 0.79kN；The iron tailings porous filter-material 1000g being used for microorganism is inserted with in air-blowing and cylindricality reactor that circulating device, capacity are 50L, gas-water ratio is 10:1, rate of circulating flow controls at 0.2m/s, the process time is 20h, industrial organic waste water takes from waste water in Tianjin chemicals production enterprise biochemical treatment tank similarly to Example 1, is 496mg/L through chromium forensic chemistry oxygen demand (COD) value。Through 30min test COD value be 385mg/L, through 60min test COD value be 251mg/L, to test COD value through 90min be 175.6mg/L, COD clearance be 64.6.0%。
Unaccomplished matter of the present invention is known technology。
Claims (9)
1. it is used as an iron tailings porous material for microorganism ceramic grain filter, it is characterized by that this material includes the microorganism of iron tailings porous material and porous material loading；
The raw material composition of described iron tailings porous material and mass percent thereof are as follows:
Iron tailings: 65-85%
Clay: 6-19%
Pore creating material: 4-12%
Calcium carbonate: 1-6%
Each constituent mass percentage ratio sum is 100%；
Described load of microorganisms method on the porous material, comprises the following steps:
By microorganism fungus kind after course of cultivating the microorganism, obtain microorganism basis bacterium solution, at 25 DEG C, with distilled water, microorganism basis bacterium solution is diluted 10-100 times, obtain dilution bacterium solution；Iron tailings porous material is dried at 50 DEG C 1h again, take out after immersing dilution bacterium solution 24h after naturally cooling to room temperature, taking out and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, obtains being used as the iron tailings porous material of microorganism ceramic grain filter after 7-15 days。
2. the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by that the chemical composition of described iron tailings includes SiO2For 60-75%, TFe8-14%。
3. the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by that described clay is the one in attapulgite, kaolinite, and specific surface area is 15-30m2/ g, granularity are less than the powder body of 200 orders。
4. the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by that described pore creating material is the one in coal dust, powdered carbon, starch, and bulk density is 0.75-0.85t/m3, granularity is less than the powder body of 200 orders。
5. the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by that described calcium carbonate is commercially available technical grade powder body calcium carbonate。
6. the as claimed in claim 1 iron tailings porous material being used as microorganism ceramic grain filter, is characterized by one or more that described microorganism is in the strains such as glue bacterium, pseudomonas, football shirt bacterium and bayesian sulfur bacterium。
7. the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by that described course of cultivating the microorganism includes multistage expansion, nutrition cultivation and Organic substance domestication。
8. the preparation method of the iron tailings porous material being used as microorganism ceramic grain filter as claimed in claim 1, is characterized by comprise the following steps:
(1) by iron tailings through ball mill grinding to granularity less than 200 orders；
(2) according to proportioning of improving quality, weighing iron tailings, clay, pore creating material and calcium carbonate respectively, each constituent mass percentage ratio sum is 100%, afterwards honed 200 mesh sieves of mixed powder；
(3) adding water in the mixed powder after grinding sieves, uniform stirring 30min, through granulator granulation molding, particle diameter is 3 ~ 5mm；
(4) spherolite upper step obtained is under 50-70%RH after old 24h in room temperature and humidity, puts in baking oven, at 90-120 DEG C, and dry 2-3h；
(5) more dried spherolite is put in sintering furnace, at 800-1100 DEG C, calcine 1-2h, after cooling to room temperature with the furnace, can be prepared by iron tailings porous material；Calcining heating rate is 2.0-3.0 DEG C/min；
(6) by microorganism fungus kind after course of cultivating the microorganism, obtain microorganism basis bacterium solution, at 25 DEG C, with distilled water, microorganism basis bacterium solution is diluted 10 ~ 100 times, obtain dilution bacterium solution；Iron tailings porous material is dried at 50 DEG C 1h again, take out after immersing dilution bacterium solution 24h after naturally cooling to room temperature, taking out and drench dry placement in the cool, every 12h dilution bacterium solution is sprayed to humidity, can obtain being used as the iron tailings porous material of microorganism ceramic grain filter after 7-15 days。
9. it is used as the application of the iron tailings porous material of microorganism ceramic grain filter as claimed in claim 1, it is characterized by that can be applicable to industrial organic waste water processes。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106517840A (en) * | 2016-09-18 | 2017-03-22 | 佛山科学技术学院 | Method for preparing cement additive by using aluminum surface treatment solid waste as raw material |
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| CN109734416A (en) * | 2018-12-06 | 2019-05-10 | 咸阳陶瓷研究设计院有限公司 | A kind of foamed ceramic and its preparation process |
| CN110128105A (en) * | 2019-04-04 | 2019-08-16 | 河北工业大学 | Iron tailings based black solar energy heat absorbing ceramics and preparation method thereof |
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| CN111760381A (en) * | 2020-06-10 | 2020-10-13 | 昆明理工大学 | Method for preparing filter material by using copper tailings and application |
| TWI717053B (en) * | 2019-10-14 | 2021-01-21 | 國立臺灣大學 | A novel porous biochar ceramsite and preparing methods thereof |
| CN113860908A (en) * | 2021-08-20 | 2021-12-31 | 科盛环保科技股份有限公司 | Preparation method of porous biological filter material for biological aerated filter |
| CN114368961A (en) * | 2022-01-27 | 2022-04-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method and new application of iron tailing ceramic filter material |
| CN115010508A (en) * | 2022-05-26 | 2022-09-06 | 中南大学 | Method for preparing ceramsite green body from iron tailings and coal gangue |
| CN116768649A (en) * | 2023-06-26 | 2023-09-19 | 中国科学院过程工程研究所 | Iron tailing-based soil improvement material and preparation method thereof |
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| CN106431490A (en) * | 2016-09-13 | 2017-02-22 | 淮阴师范学院 | Low grade concave-convex bar stone clay porous support preparation method |
| CN106517840A (en) * | 2016-09-18 | 2017-03-22 | 佛山科学技术学院 | Method for preparing cement additive by using aluminum surface treatment solid waste as raw material |
| CN106517840B (en) * | 2016-09-18 | 2018-11-20 | 佛山科学技术学院 | The method for preparing cement additive as raw material using aluminium surface processing solid waste |
| CN107673738A (en) * | 2017-10-20 | 2018-02-09 | 武汉钢铁有限公司 | A kind of iron ore tailings haydite and preparation method |
| CN109734416A (en) * | 2018-12-06 | 2019-05-10 | 咸阳陶瓷研究设计院有限公司 | A kind of foamed ceramic and its preparation process |
| CN110128105A (en) * | 2019-04-04 | 2019-08-16 | 河北工业大学 | Iron tailings based black solar energy heat absorbing ceramics and preparation method thereof |
| CN110201204A (en) * | 2019-07-19 | 2019-09-06 | 兰州理工大学 | A kind of biological deodorizing agent carrier and preparation method thereof, a kind of biological deodorant and preparation method thereof |
| CN110201204B (en) * | 2019-07-19 | 2020-11-10 | 兰州理工大学 | Biological deodorant carrier and preparation method thereof, and biological deodorant and preparation method thereof |
| TWI717053B (en) * | 2019-10-14 | 2021-01-21 | 國立臺灣大學 | A novel porous biochar ceramsite and preparing methods thereof |
| CN111760381A (en) * | 2020-06-10 | 2020-10-13 | 昆明理工大学 | Method for preparing filter material by using copper tailings and application |
| CN113860908A (en) * | 2021-08-20 | 2021-12-31 | 科盛环保科技股份有限公司 | Preparation method of porous biological filter material for biological aerated filter |
| CN114368961A (en) * | 2022-01-27 | 2022-04-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method and new application of iron tailing ceramic filter material |
| CN114368961B (en) * | 2022-01-27 | 2023-01-20 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method and new application of iron tailing ceramic filter material |
| CN115010508A (en) * | 2022-05-26 | 2022-09-06 | 中南大学 | Method for preparing ceramsite green body from iron tailings and coal gangue |
| CN116768649A (en) * | 2023-06-26 | 2023-09-19 | 中国科学院过程工程研究所 | Iron tailing-based soil improvement material and preparation method thereof |
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