CN1290607C - Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent - Google Patents
Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent Download PDFInfo
- Publication number
- CN1290607C CN1290607C CN 200310107695 CN200310107695A CN1290607C CN 1290607 C CN1290607 C CN 1290607C CN 200310107695 CN200310107695 CN 200310107695 CN 200310107695 A CN200310107695 A CN 200310107695A CN 1290607 C CN1290607 C CN 1290607C
- Authority
- CN
- China
- Prior art keywords
- active carbon
- solvent
- regeneration
- microwave
- microwave reinforced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention discloses a method for removing organic pollutants by active carbon microwave reinforced solvents with high elution and regeneration efficiency. The method carries out thorough desorption and regeneration for active carbon which achieves adsorption saturation in the process of water treatment by hydrophilic organic solvents in a microwave heating mode to realize the cyclic utilization of the active carbon. Firstly, active carbon adsorbing organic pollutants is put into solvents, and then the active carbon soaked in the solvents is irradiated by microwaves. The method of the present invention has the advantages of reliable work, simple operation, little investment, less consumed energy, less pollution of the regeneration technology to environment, thorough energy utilization, low regeneration cost of the active carbon, capability of keeping the adsorption capacity of the active carbon, and long service life of the active carbon.
Description
Technical field: the method for organic pollution is removed in the microwave reinforced solvent high-efficiency wash-out regeneration that the present invention relates to a kind of active carbon, mode with heating using microwave is carried out abundant desorption and regeneration with hydrophilic organic solvent to reaching the saturated active carbon of absorption in the water treatment procedure, realizes the active carbon cyclic utilization method.
Background technology: active carbon is in feedwater and contains the splendid adsorbent that generally adopts in the organic matter wastewater treatment process, be widely used in to water treatment and oil refining, contained wastewater treatments such as phenol printing and dyeing, neoprene, acrylic fibers, trinitrotoluene, and the advanced treating of municipal sewage.Though the charcoal absorption performance is good, applied range, higher because of price, necessary recycling utilization just can meet cost requirement.The regeneration of active carbon mainly contains several methods such as elevated temperature heat method of reproduction, chemistry and bio-regeneration method, wet oxidation disintegrating and regeneration method, electrolytic oxidation method of reproduction, high-frequency impulse method, solvent regeneration process at present.In patent CN 85100619 and CN 97202503, introduced the device that the active carbon forced electric discharge is regenerated as Weng Yuansheng and Tian Zhongquan etc.; What Jingyu etc. has been introduced the solvent exhaust gas active-carbon adsorption and regeneration device of thermal current heating, vacuum desolventizing in patent CN 87212349; Liang Lili has introduced the technology and the device of salt acid treatment powdered active carbon regenerating in patent CN 93109695; Li Zhenhuan etc. have introduced the heater-type active carbon regenerating technology in patent CN 95111001; Li Weinings etc. have been introduced pressure air-dissolving bio-regeneration process of active carbon in patent CN 95112281; Xie Renzhi has introduced the technology of phosphoric acid processing powdered active carbon regenerating in patent CN 96111569; Bright reds etc. have been introduced the process of active carbon in the solvent method regeneration treatment of Nitrobenzene waster water process in patent CN 96117148.Elevated temperature heat method of reproduction wide adaptability, heating-up temperature are higher, and generally at 700～1000 ℃, it is bigger to consume energy, and need to feed activated gas such as water vapour, carbon dioxide packing, oxygen, are difficult for reclaiming adsorbate, must prevent to cause simultaneously air pollution; The apparatus and process complexity, the regeneration expense is higher, and the active carbon loss is bigger.Chemistry and bio-regeneration method comprise alkali cleaning method of reproduction, pickling method of reproduction, ozone method of reproduction, bio-regeneration method etc., wherein most of chemical agent that adopts, and cost is higher relatively and not exclusively the utilization once more of later stage active carbon is had a negative impact because of desorb.Several methods such as wet oxidation disintegrating and regeneration method, electrolytic oxidation method of reproduction, high-frequency impulse method all expend a large amount of electric energy, and the method that has also requires secluding air, and cost height, equipment are too complicated, and regeneration effect influenced by the kind of organic pollution bigger.And solvent regeneration process is that the saturated active carbon of absorption in water treatment procedure contact with certain solvent, as if solvent to the affinity of adsorbate greater than the affinity of active carbon to adsorbate, adsorbate is dissolved in the solvent, regenerate thereby reach active carbon.Solvent regeneration process is compared with other renovation process, regeneration efficiency is higher, the active carbon structure there is not destruction, but in processing procedure, still there is the sufficient inadequately problem of mass-and heat-transfer in the activated carbon capillary, make the charcoal absorption efficient of solvent regeneration process regeneration be about about 90%, this shows and still has the part adsorbate can't carry out wash-out, has influenced the circulation adsorption efficiency of active carbon.Microwave is meant that wavelength is a kind of electromagnetic wave of 300MHz-300000MHz in 1mm～1m, frequency.Microwave has stronger penetration capacity, and has heating efficiency.In microwave heating system, processed material normally absorbs the medium of microwave energy, i.e. lossy dielectric, or polarizable medium.Heating using microwave is a kind ofly to be deep into material inside, heating means from inside to outside, is not undertaken by the heat conduction of material itself and do not resemble traditional heating means, has significantly reduced the time of heating.Heating using microwave is not heat transfer process, but a kind of volume heating, does not have the heat loss of heat transfer process, thermal efficiency ratio traditional heating method height.The microwave radiation has abated effect to the interaction between active carbon and the adsorbate organic pollution, the organic pollution that can make charcoal absorption in active carbon inside, outside separate apace to be drawn onto in the solvent simultaneously go.
Summary of the invention: still have the defective that the small portion of residual adsorbate can't wash-out in order to overcome existing regeneration method of active carbon, provide a kind of can be with the method for the thorough wash-out of adsorbate on the active carbon.The present invention is achieved by following proposal: organic method is removed in a kind of microwave reinforced solvent elution regeneration of active carbon, it is realized by following step, at first the active carbon that is adsorbed with organic pollutants is inserted in the solvent, then the active carbon that is immersed in the solvent is carried out microwave irradiation.Utilize microwave irradiation to weaken mutual suction-operated between the organic pollution of active carbon and absorption, the organic pollution of absorption can be transferred in the dicyandiamide solution fast and efficiently go.Heating using microwave simultaneously raises solvent temperature rapidly, has increased the solubility of organic pollution in solvent.Dicyandiamide solution is separated with active carbon, and recovered solvent recycles, and promptly can be used for water treatment after the active carbon drying.The invention has the beneficial effects as follows, it adopts the method for heating using microwave solvent fast and efficiently organic pollution to be separated from active carbon and is drawn to the solvent, the active carbon structure is not destroyed, and the absorption property of the active carbon of regeneration equals the absorption property of original active carbon substantially.Method reliable operation of the present invention, simple to operate, invest little, power consumption is few, the regeneration technology environmental pollution is little, using energy source is abundant.The active carbon regeneration cost is low, can guarantee the unlikely decline of adsorption capacity of active carbon, makes big leap ahead in service life of active carbon.
The specific embodiment one: it is realized by following step, at first the active carbon that is adsorbed with organic pollutants is inserted in the solvent, then the active carbon that is immersed in the solvent is carried out microwave irradiation, the time of microwave irradiation, chronic exposure was 5～60 minutes again for after making the solvent boiling.Adopt microwave heating technique that solvent temperature is raise, reach the boiling point of the solvent that uses, increased the solubility of organic pollution in solvent.
The specific embodiment two: the difference of present embodiment and embodiment one is that described active carbon is graininess body or coccoid.Other is identical with embodiment one.
The specific embodiment three: the difference of present embodiment and embodiment one is that the frequency of described microwave is 915MHz to 2450MHz.Other is identical with embodiment one.
The specific embodiment four: the difference of present embodiment and embodiment one is, described solvent is hydrophilic methyl alcohol, ethanol, normal propyl alcohol, isopropyl alcohol, acetone, butanone, oxolane or 1, the mixed solvent of 4-dioxane and two or more above-mentioned solvent gained.Wherein be preferred with ethanol.Other is identical with embodiment one.
The specific embodiment five: the difference of present embodiment and embodiment one is that the volume of solvent is 2～30 times of active carbon volume, serves as preferred with 2～4 times wherein.Other is identical with embodiment one.
Claims (8)
1, organic method is removed in a kind of microwave reinforced solvent elution regeneration of active carbon, it is characterized in that it realizes by following step, at first the active carbon that is adsorbed with organic pollutants is inserted in the solvent, then the active carbon that is immersed in the solvent is carried out microwave irradiation.
2, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 1, and the time that it is characterized in that microwave irradiation, chronic exposure was 5～60 minutes again for after making the solvent boiling.
3, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 1, it is characterized in that described active carbon is graininess body or coccoid.
4, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 1, and the frequency that it is characterized in that described microwave is 915MHz to 2450MHz.
5, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 1, it is characterized in that described solvent is hydrophilic methyl alcohol, ethanol, normal propyl alcohol, isopropyl alcohol, acetone, butanone, oxolane or 1, the mixed solvent of 4-dioxane or two or more above-mentioned solvent gained.
6, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 5, it is characterized in that it being that described solvent is an ethanol.
7, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 1, and the volume that it is characterized in that solvent is 2～30 times of active carbon volume.
8, organic method is removed in the microwave reinforced solvent elution regeneration of active carbon according to claim 7, and the volume that it is characterized in that solvent is 2～4 times of active carbon volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107695 CN1290607C (en) | 2003-11-13 | 2003-11-13 | Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107695 CN1290607C (en) | 2003-11-13 | 2003-11-13 | Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544142A CN1544142A (en) | 2004-11-10 |
| CN1290607C true CN1290607C (en) | 2006-12-20 |
Family
ID=34334435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310107695 Expired - Fee Related CN1290607C (en) | 2003-11-13 | 2003-11-13 | Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1290607C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084155B (en) * | 2011-11-03 | 2016-04-06 | 中国地质大学（北京） | A kind of method of microwave-assisted regeneration active carbon |
| CN103214055B (en) * | 2013-04-19 | 2014-09-03 | 马军 | Wastewater treatment device containing organic solvent |
| CN103433012A (en) * | 2013-09-16 | 2013-12-11 | 重庆工商大学 | Novel method for regenerating oil liquid purifying resin |
| CN111229191A (en) * | 2020-01-19 | 2020-06-05 | 内蒙古科技大学 | Efficient regeneration activation method for recycling gold-loaded activated carbon |
| CN112076736B (en) * | 2020-09-15 | 2022-06-24 | 中科富海(中山)低温装备制造有限公司 | Internal boiling activated carbon treatment process |
| CN112691653B (en) * | 2020-12-22 | 2023-07-04 | 广东电网有限责任公司电力科学研究院 | Regeneration treatment method of adsorbent for transformer oil |
| CN112755986A (en) * | 2020-12-28 | 2021-05-07 | 衡水京华化工有限公司 | Activated carbon regeneration method |
-
2003
- 2003-11-13 CN CN 200310107695 patent/CN1290607C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1544142A (en) | 2004-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101362076B (en) | Regeneration method of active carbon absorbent | |
| CN103252223A (en) | Method for regenerating saturated active carbon adsorbing organic matters through microwave activation of potassium persulfate | |
| CN201684613U (en) | Microwave activated carbon regenerating device | |
| CN105582904A (en) | Method for regenerating activated carbon | |
| CN1290607C (en) | Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent | |
| CN112174244A (en) | Device and method for treating medium-low concentration DMF (dimethyl formamide) wastewater | |
| CN104609497A (en) | Activated carbon treatment technology for organic wastewater | |
| CN106268626B (en) | A kind of regeneration method of magnetism diatomite adsorbant | |
| CN106512974A (en) | Regeneration method of activated carbon | |
| CN105753088A (en) | Rotary type microwave wastewater treatment device | |
| CN217341408U (en) | Saturated active carbon high temperature anaerobic desorption regeneration system | |
| CN102671647B (en) | Method for treating pollutants with plasmas and recycling adsorbents | |
| JP2001170695A (en) | Gaseous methane refining equipment and domestic animal dung treatment facility | |
| CN101643205B (en) | Equipment and method for active carbon microwave activation | |
| CN106824146A (en) | The method that dielectric barrier discharge activation persulfate cooperates with regenerated carbon | |
| KR101876443B1 (en) | Gas removal apparatus using electromagnetic induction heating and gases purification system using it | |
| CN211753685U (en) | Efficient water vapor desorption and organic solvent recovery system | |
| CN1211156C (en) | Active carbon fiber regenerating method | |
| JP3700846B2 (en) | Method and apparatus for removing ammoniacal nitrogen from wastewater | |
| CN1785500A (en) | Microwave plasma regeneration method of active carbon | |
| CN215611624U (en) | Macroporous adsorption material desorption regeneration and aftertreatment system | |
| CN107552028B (en) | Regeneration method of powdered activated carbon | |
| CN114669285A (en) | Saturated active carbon high temperature anaerobic desorption regeneration system | |
| CN212309611U (en) | Saturated activated carbon regeneration treatment device for absorbing VOCs gas | |
| CN108773944A (en) | Adsorb the method that electro-catalysis combination handles low dense organic wastewater with difficult degradation thereby |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20121113 |