CN101234331A - Preparation and using method for biological carbonaceous adsorption agent - Google Patents
Preparation and using method for biological carbonaceous adsorption agent Download PDFInfo
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- CN101234331A CN101234331A CNA2007101564355A CN200710156435A CN101234331A CN 101234331 A CN101234331 A CN 101234331A CN A2007101564355 A CNA2007101564355 A CN A2007101564355A CN 200710156435 A CN200710156435 A CN 200710156435A CN 101234331 A CN101234331 A CN 101234331A
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Abstract
The invention discloses a preparation method of a biological carbon absorbent and a utilization method thereof. The preparation method comprises: 1) air drying, grinding and sieving abandoned biomass to get 40 to 200 Mesh of powder biomass; 2) obtaining the biological carbon absorbent by putting the powder biomass into a reactor and carbonizing the biomass for 0.5 to 8 hours in the condition of 300 to 400 DEG C and the limitation of oxygen. The utilization method is provided with the following steps: 1) putting the biological carbon absorbent into organic wastewater with the quality volume ratio of 1:1,000 to 1:10,000, and the wastewater is discharged under standard by stirring, precipitating and removing difficultly degraded organic pollutants in the wastewater; 2) obtaining activated biological carbon absorbent after making activating treatment on the filtered and dried precipitates for 1 to 6 hours in the condition of 300 to 400 DEG C and the limitation of oxygen, and simultaneously, thermally decomposing the absorbed organic pollutants; 3) the activated biological carbon absorbent is repeatedly used in the treatment of organic wastewater. The preparation and utilization method of the biological carbon absorbent is simple in preparation technique, environmental protection, low in cost and has very good treatment effect for polar or non-polar organic wastewater.
Description
Technical field
The present invention relates to water technology and application, relate in particular to a kind of preparation and using method of handling the biological carbonaceous adsorption agent of organic wastewater with difficult degradation thereby.
Background technology
China's water body organic micro-pollution, be on the rise the wherein high biological accumulation of the normal tool of the organic pollution of trace, " three cause " (carcinogenic, teratogenesis, mutagenesis) effect as polycyclic aromatic hydrocarbon (PAHs), Polychlorinated biphenyls (PCBs), aromatic nitro compound, dioxin-like compound (PCDDs) etc.; And current water technology is difficult to effectively remove this type of organic pollution, and drinking water safety and population health are constituted a serious threat.The novel absorption that seek economical and efficient, is suitable for drinking water treatment has become one of focus of paying close attention in the Environmental Science and Engineering field, wherein relates to active carbon, organic clay, olein-active carbon compound adsorbent etc.Main both at home and abroad at present employing charcoal absorption, activated carbon has the good treatment effect to the dissolubility organic pollution, but its adsorption mechanism is surface absorption, adsorption capacity is little, and is saturated easily, causes the use cost height; In addition, the preparation temperature of active carbon usually＞1000 ℃, that reclaiming simultaneously utilizes is difficult, cost is high; Active carbon is used for being subjected to water quality impact big in the organic wastewater adsorption treatment, as reducing its adsorption capacity and ability greatly behind the organic obstruction of the dissolubility activated carbon surface.The organobentonite absorption property is good, adsorption capacity is big, and the application in organic wastewater with difficult degradation thereby is handled has caused very big concern, existing relevant patent of invention (patent of invention number: ZL03116256.8); But the easy desorption of the surfactant on the organobentonite causes that COD is difficult to qualified discharge in the wastewater treatment.Therefore, the treatment of Organic Wastewater agent that development of new is efficient, cheap, stable, safe is significant.
Studies show that recently, ubiquity biological carbon such as charcoal, coke, soot etc. in the environment, and have superpower absorption property.Biological carbon is produced by living beings or fossil fuel imperfect combustion.Wherein living beings comprise agro-ecology matter, as straw, Wheat Straw, corn stalk, beanstalk, rape straw, cotton straw class straw.At present, more than 600,000,000 ton of agricultural stalk of the annual generation of China, wherein about 80% go out of use or burn, not only wasted a large amount of energy, the severe contamination atmosphere, harm people health, also can have influence on aviation and public safeties such as highway communication, communication, and initiation fire and other accidents thus, heavy losses caused, the discarded stalk in many areas has become a kind of public hazards, needs to be resolved hurrily.
The adsorbent that utilizes abandoned biomass to make is handled organic wastewater, has both solved abandoned biomass and has caused the environmental ecology problem, turns waste into wealth again, is used to handle organic wastewater with difficult degradation thereby.This biological carbonaceous adsorption agent has jumbo distributional effects and strong surperficial suction-operated simultaneously, and its structure-absorption property is adjustable; In adsorption treatment organic wastewater with difficult degradation thereby process, be not subjected to water quality impact; The adsorbent reclaiming utilizes that technology is simple, cost is low, and the absorption property that reclaims the adsorbent that obtains does not reduce; Be applicable to the processing of various organic wastewaters, be particularly suitable for the adsorption treatment of micro-persistence organic pollutant in the drinking water.
Summary of the invention
The preparation and the using method that the purpose of this invention is to provide a kind of biological carbonaceous adsorption agent.
The preparation method of biological carbonaceous adsorption agent comprises the steps:
1) with discarded living beings, air-dry back crushing screening obtains 40-200 order powder living beings;
2) the powder living beings are placed reactor, under 300-400 ℃ of temperature and restriction oxygen condition, charing 0.5-8 hour, make biological carbonaceous adsorption agent.
Described discarded living beings are the abandoned biomass in paddy rice, wheat, corn, rape, the biological straw of cotton and the application of city life garbage.The granularity of abandoned biomass is the 50-150 order.Carbonization temperature is 330-380 ℃.
The using method of biological carbonaceous adsorption agent comprises the steps:
1) biological carbonaceous adsorption agent is added in the organic wastewater, and the mass volume ratio of adsorbent and organic wastewater is 1: 1000～1: 10000, through stirring, precipitating, removes persistent organic pollutants in the waste water, discharged wastewater met the national standard;
2) sediment done of filter, under 300-400 ℃ and restriction oxygen condition activation processing 1-6 hour, the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed;
3) biological carbonaceous adsorption agent after the activation is recycled and reused for treatment of Organic Wastewater.
Persistent organic pollutants in the described organic wastewater are polycyclic aromatic hydrocarbon, aromatic nitro compounds, Polychlorinated biphenyls, many chloros dibenzodioxin English/furans.Recovery activation-reusable the number of times of biological carbonaceous adsorption agent is 5-10 time.
The present invention had both solved abandoned biomass and had caused the environmental ecology problem, turned waste into wealth again, was used to handle organic wastewater with difficult degradation thereby.Compare with existing technology, its advantage is that adsorbent raw material source is abundant, conveniently is easy to get, with low cost, the adsorbent preparation flow is simple, and the effect of handling micro-persistent organic pollutants in the waste water is better than conventional active carbon, simultaneously the easy regeneration of adsorbent.
This biological carbonaceous adsorption agent uses the agriculture waste living beings to limit the oxygen charing to make at a certain temperature, abundant polarity and nonpolar functional group are contained in its surface, have a lot of microcellular structures, can come the control surface performance by regulating carbonization temperature, make to be fit to polarity or adsorption treatment nonpolar and high concentration or low-concentration organic waste water, this adsorbent is particularly suitable for the adsorption treatment of micro quantity organic pollutant in the drinking water.Biological carbonaceous adsorption agent can reuse or regeneration.
The specific embodiment
Have jumbo distributional effects and superpower surperficial suction-operated simultaneously according to part charing living beings, the principle that persistence organic pollutant is had very strong adsorption capacity, therefore, discarded living beings charing is at a certain temperature made biological carbonaceous adsorption agent, be used for the adsorption treatment of water organic wastewater with difficult degradation thereby; Organic pollution in the organic wastewater is PAHs, aromatic nitro compounds, PCBs, PCDDs.
Embodiment 1
With discarded paddy stalk, air-dry back crushing screening 40 orders obtain 40 order paddy stalk powder.The paddy stalk powder is placed reactor, and in 300 ℃ and limit oxygen condition, charing 0.5 hour makes biological carbonaceous adsorption agent BCS-1.
Embodiment 2
With discarded rape straw, air-dry back crushing screening 100 orders obtain 100 order rape straw powder.The rape straw powder places reactor, in 300 ℃ and the limit oxygen condition under, charing 3 hours makes biological carbonaceous adsorption agent BCS-2.
Embodiment 3
With discarded withered pine needle, air-dry back crushing screening 200 orders obtain 200 order pine needle powder.The pine needle powder is placed reactor, in 300 ℃ and the limit oxygen condition under, charing 6 hours makes biological carbonaceous adsorption agent BCS-3.
Embodiment 4
With discarded paddy stalk, air-dry back crushing screening 100 orders obtain 100 order paddy stalk powder.The paddy stalk powder is placed reactor, and in 400 ℃ and limit oxygen condition, charing 6 hours makes biological carbonaceous adsorption agent BCS-4.
Embodiment 5
With discarded rape straw, air-dry back crushing screening 150 orders obtain 150 order rape straw powder.The rape straw powder is placed reactor, in 400 ℃ and the limit oxygen condition under, charing 6 hours makes biological carbonaceous adsorption agent BCS-5.
Embodiment 6
The pine needle that will wither and fall, air-dry after pulverize, cross 100 mesh sieve, obtain 100 order pine needle powder, the pine needle powder is placed reactor, under 400 ℃ of temperature and limit oxygen condition, charing 1.0 hours; After being cooled to room temperature, take out the biological carbonaceous adsorption agent BCS-6 that makes.
Embodiment 7
The naphthalene solution (the Tu Shui ratio is about 1: 4000) of getting 2.5mg biological carbonaceous adsorption agent (as BCS-1, BCS-2, BCS-3) and 10mL adds in the sample bottle of 10mL, 25 ℃ of 24 hours (absorption reach balance) of vibrating down.The concentration range of naphthalene: 0.02-28 μ g/mL.Experiment records the clearance 95% of naphthalene.Wherein the high adsorption capacity of naphthalene can reach 37mg/g.When the Tu Shui ratio was 1: 1000, clearance was greater than 99%.
Embodiment 8
The naphthalene solution (the Tu Shui ratio is about 1: 1000) of getting 10mg biological carbonaceous adsorption agent (as BCS-4, BCS-5, BCS-6) and 10mL adds in the sample bottle of 10mL, 25 ℃ of 24 hours (absorption reach balance) of vibrating down.The concentration range of naphthalene: 0.02-28 μ g/mL.Experiment records the clearance of naphthalene greater than 95%.Wherein the high adsorption capacity of naphthalene can reach 15mg/g.
Embodiment 9
The nitrobenzene solution (the Tu Shui ratio is 1: 1000) of getting 10mg biological carbonaceous adsorption agent (as BCS-4, BCS-5, BCS-6) and 10mL adds in the sample bottle of 10mL, 25 ℃ of 24 hours (absorption reach balance) of vibrating down.The concentration range of nitrobenzene: 0-1600 μ g/mL.Experiment records the clearance of nitrobenzene greater than 95%.Wherein the high adsorption capacity of nitrobenzene can reach 180mg/g.
Embodiment 10
The nitrobenzene solution (the Tu Shui ratio is 1: 1000) of getting 20 mg biological carbonaceous adsorption agents (as BCS-1, BCS-2, BCS-3) and 10mL adds in the sample bottle of 10mL, 25 ℃ of 24 hours (absorption reach balance) of vibrating down.The concentration range of nitrobenzene: 0-1600 μ g/mL.Experiment records the clearance of nitrobenzene greater than 95%.Wherein the high adsorption capacity of nitrobenzene can reach 200mg/g.
Embodiment 11
Get the biological carbonaceous adsorption agent that is adsorbed with PAHs after the wastewater treatment (as BCS-1～BCS-6), through filter do after, under 300 ℃ and restriction oxygen condition, handled the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed 6 hours; Biological carbonaceous adsorption agent after the activation is reused for treatment of Organic Wastewater, and effect does not reduce.
Embodiment 12
Get the biological carbonaceous adsorption agent that is adsorbed with PAHs after the wastewater treatment (as BCS-1～BCS-6), through filter do after, activation processing is 3 hours under 400 ℃ and restriction oxygen condition, the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed; Biological carbonaceous adsorption agent after the activation is reused for treatment of Organic Wastewater, and effect does not reduce.
Embodiment 13
Get the biological carbonaceous adsorption agent that is adsorbed with PCBs after the wastewater treatment (as BCS-1～BCS-6), through filter do after, activation processing is 3 hours under 400 ℃ and restriction oxygen condition, the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed; Biological carbonaceous adsorption agent after the activation is reused for treatment of Organic Wastewater, and effect does not reduce.
Embodiment 14
Get the biological carbonaceous adsorption agent that is adsorbed with nitro class aromatic after the wastewater treatment (as BCS-1～BCS-6), through filter do after, activation processing is 3 hours under 400 ℃ and restriction oxygen condition, the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed; Biological carbonaceous adsorption agent after the activation is reused for treatment of Organic Wastewater, and effect does not reduce.
Claims (7)
1. the preparation method of a biological carbonaceous adsorption agent is characterized in that comprising the steps:
1) with discarded living beings, air-dry back crushing screening obtains 40-200 order powder living beings;
2) each powder living beings places reactor, under 300-400 ℃ of temperature and restriction oxygen condition, charing 0.5-8 hour, makes biological carbonaceous adsorption agent.
2. the preparation method of a kind of biological carbonaceous adsorption agent according to claim 1 is characterized in that described discarded living beings are the abandoned biomass in paddy rice, wheat, corn, rape, the biological straw of cotton and the application of city life garbage.
3. the preparation method of a kind of biological carbonaceous adsorption agent according to claim 1, the granularity that it is characterized in that described abandoned biomass is the 50-150 order.
4. the preparation method of a kind of biological carbonaceous adsorption agent according to claim 1 is characterized in that described carbonization temperature is 330-380 ℃.
5. using method of the biological carbonaceous adsorption agent of method preparation according to claim 1 is characterized in that:
1) biological carbonaceous adsorption agent is added in the organic wastewater, and the mass volume ratio of adsorbent and organic wastewater is 1: 1000～1: 10000, through stirring, precipitating, removes persistent organic pollutants in the waste water, discharged wastewater met the national standard;
2) sediment done of filter, under 300-400 ℃ and restriction oxygen condition activation processing 1-6 hour, the biological carbonaceous adsorption agent that obtains activating, the organic pollution that thermal decomposition simultaneously is adsorbed;
3) biological carbonaceous adsorption agent after the activation is recycled and reused for treatment of Organic Wastewater.
6. the using method of a kind of biological carbonaceous adsorption agent according to claim 5 is characterized in that the persistent organic pollutants in the described organic wastewater are polycyclic aromatic hydrocarbon, aromatic nitro compounds, Polychlorinated biphenyls, many chloros dibenzodioxin English/furans.
7. the using method of a kind of biological carbonaceous adsorption agent according to claim 5 is characterized in that the recovery activation-reusable number of times of described biological carbonaceous adsorption agent is 5-10 time.
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| CNA2007101564355A CN101234331A (en) | 2007-10-30 | 2007-10-30 | Preparation and using method for biological carbonaceous adsorption agent |
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Cited By (12)
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|---|---|---|---|---|
| CN102583618A (en) * | 2012-01-16 | 2012-07-18 | 浙江工业大学 | Technique for adsorbing organics in biomass wastewater by biomass carbon |
| CN103272561A (en) * | 2013-06-16 | 2013-09-04 | 济南圣泉集团股份有限公司 | Adsorbing material and preparation method thereof |
| CN103285838A (en) * | 2013-07-02 | 2013-09-11 | 景德镇陶瓷学院 | Preparation method of functional magnetic absorbent used for treating industrial wastewater |
| CN103864169A (en) * | 2014-03-27 | 2014-06-18 | 广东省农业科学院农业资源与环境研究所 | Method of removing weed killers in wastewater by using biochar |
| CN104138745A (en) * | 2014-08-19 | 2014-11-12 | 中国科学院生态环境研究中心 | Preparation method of biological carbon adsorbent for repairing organic pollution |
| CN105126756A (en) * | 2015-09-09 | 2015-12-09 | 陕西科技大学 | Preparation method for papermaking argillaceous activated carbon adsorption material |
| CN105710120A (en) * | 2016-03-21 | 2016-06-29 | 西南科技大学 | Method for applying waste straw to organic pesticide soil pollution control |
| CN105879838A (en) * | 2016-06-12 | 2016-08-24 | 山东师范大学 | Method for preparing efficient heavy metal adsorbent from modified cotton stalk biomass charcoal |
| CN106362689A (en) * | 2016-10-31 | 2017-02-01 | 新奥生态环境治理有限公司 | Reutilization method for pyrolytic carbides of municipal domestic wastes |
| CN106390939A (en) * | 2016-10-31 | 2017-02-15 | 新奥生态环境治理有限公司 | Heavy metal ion adsorbent |
| CN106893600A (en) * | 2017-02-15 | 2017-06-27 | 邵鹏 | A kind of environment protection type multifunctional soil conditioner |
| CN110813240A (en) * | 2019-12-16 | 2020-02-21 | 江苏科技大学 | Preparation method and application of ultrahigh-performance biomass-based banana peel oriented activated carbon VOCs adsorbent |
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2007
- 2007-10-30 CN CNA2007101564355A patent/CN101234331A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583618A (en) * | 2012-01-16 | 2012-07-18 | 浙江工业大学 | Technique for adsorbing organics in biomass wastewater by biomass carbon |
| CN103272561B (en) * | 2013-06-16 | 2015-09-09 | 济南圣泉集团股份有限公司 | Sorbing material and preparation method thereof |
| CN103272561A (en) * | 2013-06-16 | 2013-09-04 | 济南圣泉集团股份有限公司 | Adsorbing material and preparation method thereof |
| CN103285838A (en) * | 2013-07-02 | 2013-09-11 | 景德镇陶瓷学院 | Preparation method of functional magnetic absorbent used for treating industrial wastewater |
| CN103285838B (en) * | 2013-07-02 | 2014-10-15 | 景德镇陶瓷学院 | Preparation method of functional magnetic absorbent used for treating industrial wastewater |
| CN103864169B (en) * | 2014-03-27 | 2016-01-06 | 广东省农业科学院农业资源与环境研究所 | A kind of method utilizing charcoal to remove weedicide in sewage |
| CN103864169A (en) * | 2014-03-27 | 2014-06-18 | 广东省农业科学院农业资源与环境研究所 | Method of removing weed killers in wastewater by using biochar |
| CN104138745A (en) * | 2014-08-19 | 2014-11-12 | 中国科学院生态环境研究中心 | Preparation method of biological carbon adsorbent for repairing organic pollution |
| CN105126756A (en) * | 2015-09-09 | 2015-12-09 | 陕西科技大学 | Preparation method for papermaking argillaceous activated carbon adsorption material |
| CN105710120A (en) * | 2016-03-21 | 2016-06-29 | 西南科技大学 | Method for applying waste straw to organic pesticide soil pollution control |
| CN105879838A (en) * | 2016-06-12 | 2016-08-24 | 山东师范大学 | Method for preparing efficient heavy metal adsorbent from modified cotton stalk biomass charcoal |
| CN106362689A (en) * | 2016-10-31 | 2017-02-01 | 新奥生态环境治理有限公司 | Reutilization method for pyrolytic carbides of municipal domestic wastes |
| CN106390939A (en) * | 2016-10-31 | 2017-02-15 | 新奥生态环境治理有限公司 | Heavy metal ion adsorbent |
| CN106390939B (en) * | 2016-10-31 | 2019-05-28 | 新奥生态环境治理有限公司 | A kind of adsorbent for heavy metal |
| CN106362689B (en) * | 2016-10-31 | 2019-05-28 | 新奥生态环境治理有限公司 | The reuse method of Combustion Properties of Municipal Solid Waste carbide |
| CN106893600A (en) * | 2017-02-15 | 2017-06-27 | 邵鹏 | A kind of environment protection type multifunctional soil conditioner |
| CN110813240A (en) * | 2019-12-16 | 2020-02-21 | 江苏科技大学 | Preparation method and application of ultrahigh-performance biomass-based banana peel oriented activated carbon VOCs adsorbent |
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