CN1546223A - Method of regenerating activated charcoal for processing phenolic waste water - Google Patents
Method of regenerating activated charcoal for processing phenolic waste water Download PDFInfo
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- CN1546223A CN1546223A CNA2003101096982A CN200310109698A CN1546223A CN 1546223 A CN1546223 A CN 1546223A CN A2003101096982 A CNA2003101096982 A CN A2003101096982A CN 200310109698 A CN200310109698 A CN 200310109698A CN 1546223 A CN1546223 A CN 1546223A
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- active carbon
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- wastewater treatment
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Abstract
The invention is a kind of regeneration method of active carbon for processing phenol waste water, which uses metal/active carbon sorption agent which carries some catalyst activity components, when it is absorbed and saturated, dries the sorption agent system under normal temperature, then carries on gas phase constant temperature oxidization, oxides and decomposes the organic contamination material, thus the active carbon can be regenerated, the merits of the invention is that it can be carried on under low temperature, reduces the energy consumption of regeneration process; it uses proper oxidization temperature and time, it can reduces the loss of the active carbon, increase the circular utilization of active carbon.
Description
Technical field
The invention belongs to the regeneration techniques of active carbon in organic phenol wastewater processing procedure, the in-situ low-temperature catalytic gas phase oxidation renovation process of active carbon in particularly a kind of organic phenol wastewater processing procedure.
Background technology
Phenolic compound is present in the waste water of many industrial process generations, has the characteristic that toxicity is big, biology is difficult to degrade.At present, adsorption technology based on the good absorption property of active carbon has a wide range of applications at organic wastewater and exhaust-gas treatment field, as Environ.Sci.Technol.1994,28:1403 and Chem.Eng.Progr.1993, what 89:20 reported is that adsorbent has been handled the volatile organic contaminant in the waste gas (VOCs) effectively with the active carbon, Wat.Res.2003, the phenols organic pollution that utilizes the charcoal absorption performance to handle in the water of 37:2347-2356 report is a kind of wastewater treatment process of simple economy.
After in a single day the adsorption capacity of active carbon reaches capacity, just need handle so that utilize again it.Water Res.2001, the Retreatment method of 35:2740-2748 report have three kinds of landfill, burning and regeneration, and wherein the regeneration treating method economical and effective is little to environmental hazard simultaneously, thereby has obtained using widely.In numerous regeneration method of active carbon, hot method of reproduction is the very general process of a kind of application.In the hot regenerative process, the active carbon that adsorbs after saturated will be handled under 800-850 ℃ high temperature, and energy consumption is big; Simultaneously, high-temperature operation makes that the adsorption capacity loss late of active carbon is big, and charcoal absorption capacitance loss of every regeneration is 5-15%.In addition, high-temperature operation makes active carbon can not carry out in-situ regeneration, needs specific regenerating unit, thereby increases disposal cost and cause a certain amount of active carbon loss in transportation; At last, the pollutant of desorption also needs post processing, complex process in the heating process.
Summary of the invention
The purpose of this invention is to provide the method that a kind of technology is simple, regeneration back active carbon loss late is low, active carbon that at low temperatures phenol wastewater is handled carries out the regeneration of low temperature catalytic gas phase oxidation.
The present invention is achieved in that to the absorbing phenolic organic pollution and the metal/activated carbon catalysis adsorbent of saturated inefficacy at normal temperatures after the drying, feed oxidizing gas, and oxidative degradation under the effect of phenolic comp ' ds pollution that makes absorption under certain oxidizing temperature at metal supported catalyst, and active carbon is only by partial oxidation, not ablated, thereby make active carbon recover its adsorption capacity, obtain regeneration.Regenerative process is carried out at low temperatures, can realize the in-situ regeneration of active carbon.
Low temperature catalytic gas phase oxidation regeneration method of active carbon of the present invention is characterized in that carrying out according to the following steps:
(1) metal/activated carbon catalysis adsorbent after saturated is dry at normal temperatures to phenols organic pollution absorption;
(2) feed oxidizing gas for dry metal/activated carbon catalysis adsorbent, and temperature is heated to 200 ℃～350 ℃; Constant temperature oxidation 1-1.5 hour, phenolic comp ' ds pollution be degraded to carbon dioxide;
(3) after the constant temperature oxidation finishes, for reducing the oxidational losses of active carbon, make metal/activated carbon catalysis adsorbent reduce to normal temperature under inert atmosphere protection, active carbon is just regenerated.
Aforesaid oxidizing gas is air, oxygen, ozone, hydrogen peroxide etc.
The metal of load is the one pack system oxide that copper, chromium etc. have the catalyzing oxidizing degrading activity to phenolic comp ' ds pollution on the aforesaid active carbon.
Aforesaid active carbon is particle, powder or fibrous active carbon.
Characteristics of the present invention are:
(1) in active carbon low temperature catalytic gas phase oxidation process, because the catalytic action of catalyst, regenerative process can be carried out under 200 ℃～350 ℃ low temperature, has reduced the energy consumption of regenerative process;
(2) in active carbon low temperature catalytic gas phase oxidation process,, quickened the degradation rate of the organic pollution of absorption owing to the absorption inspissation of active carbon;
(3) in active carbon low temperature catalytic gas phase oxidation process, adopt suitable oxidizing temperature and time, can reduce the active carbon loss, increase the cyclic utilization rate of active carbon;
(4) in active carbon low temperature catalytic gas phase oxidation process, adopt suitable metallic catalyst, can make oxidation of phenol degraded principal product is carbon dioxide, and regenerative process need not post processing, has reduced the process investment, has simplified technological process;
(5) active carbon low temperature catalytic gas phase oxidation process can realize the low-temp recovery of active carbon and regeneration on a small scale, has increased the economic benefit of regenerative process.
The specific embodiment
Embodiment 1
(1) the Cu5/AC catalysis-adsorption agent (loading of Cu is 5wt%) after saturated is dry at normal temperatures with 0.50g adsorbing phenol solution;
(2) dried Cu5/AC catalysis-adsorption agent is filled in the fixed bed reactors, feed oxidizing gas (5%O
2), and the heating fixed bed, make its temperature rise to 260 ℃;
(3) at 260 ℃ of following constant temperature oxidation 1hr, Mass Spectrometer Method oxidation of phenol degraded principal product is CO
2
(4) after the constant temperature oxidation finishes, cut off oxidizing gas, and under inert gas (Ar) protection bed temperature is reduced to normal temperature, active carbon is regenerated;
(5) repeat (2)-(4), the Cu5/AC catalyst-sorbent is in regenerative process repeatedly, and the adsorption capacity loss late and is tending towards 1% with the increase adsorption capacity loss late of regeneration times between 1-10%.
Embodiment 2
(1) the Cr5/AC catalysis-adsorption agent (loading of Cr is 5wt%) after saturated is dry at normal temperatures with 0.50g adsorbing phenol solution;
(2) dried Cr5/AC catalysis-adsorption agent is filled in the fixed bed reactors, feed oxidizing gas (5%O
2), and the heating fixed bed, make its temperature rise to 280 ℃;
(3) at 280 ℃ of following constant temperature oxidation 1hr, Mass Spectrometer Method oxidation of phenol degraded principal product is CO
2
(4) after the constant temperature oxidation finishes, cut off oxidizing gas, and under inert gas (Ar) protection bed temperature is reduced to normal temperature, active carbon is regenerated;
(5) repeat (2)-(4), the Cr5/AC catalyst-sorbent is in regenerative process repeatedly, and the adsorption capacity loss late is between 3-11%.
Claims (4)
1, a kind of renovation process of Phenol-Containing Wastewater Treatment active carbon is characterized in that comprising the steps:
(1) metal/activated carbon catalysis adsorbent after saturated is dry at normal temperatures to phenols organic pollution absorption;
(2) feed oxidizing gas for dry metal/activated carbon catalysis adsorbent, and temperature is heated to 200 ℃～350 ℃; Constant temperature oxidation 1-1.5 hour, phenolic comp ' ds pollution be degraded to carbon dioxide;
(3) after the constant temperature oxidation finishes, for reducing the oxidational losses of active carbon, make metal/activated carbon catalysis adsorbent reduce to normal temperature under inert atmosphere protection, active carbon is just regenerated.
2, the renovation process of a kind of Phenol-Containing Wastewater Treatment active carbon as claimed in claim 1 is characterized in that described oxidizing gas is air, oxygen, ozone or hydrogen peroxide.
3, the renovation process of a kind of Phenol-Containing Wastewater Treatment active carbon as claimed in claim 1, the metal that it is characterized in that load on the described active carbon are copper, chromium have the catalyzing oxidizing degrading activity to phenolic comp ' ds pollution one pack system oxides.
4, the renovation process of a kind of Phenol-Containing Wastewater Treatment active carbon as claimed in claim 1 is characterized in that described active carbon is particle, powder or fibrous active carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109698 CN1287893C (en) | 2003-12-11 | 2003-12-11 | Method of regenerating activated charcoal for processing phenolic waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109698 CN1287893C (en) | 2003-12-11 | 2003-12-11 | Method of regenerating activated charcoal for processing phenolic waste water |
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| Publication Number | Publication Date |
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| CN1546223A true CN1546223A (en) | 2004-11-17 |
| CN1287893C CN1287893C (en) | 2006-12-06 |
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| CN 200310109698 Expired - Fee Related CN1287893C (en) | 2003-12-11 | 2003-12-11 | Method of regenerating activated charcoal for processing phenolic waste water |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100528346C (en) * | 2005-12-21 | 2009-08-19 | 中国科学院山西煤炭化学研究所 | Adsorption-catalyst for treating phenol containing waste-water, preparation method and application thereof |
| CN101502804B (en) * | 2005-12-21 | 2010-12-15 | 中国科学院山西煤炭化学研究所 | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use |
| CN102019169A (en) * | 2010-12-06 | 2011-04-20 | 浙江商达环保有限公司 | Regeneration method of activated carbon in organosilicon wastewater treatment |
| CN102372383A (en) * | 2011-01-25 | 2012-03-14 | 华东理工大学 | Integrated restoring system for water body polluted by hydrochloric ether |
| CN102049256B (en) * | 2009-10-27 | 2013-05-01 | 中国石油化工股份有限公司 | Waste water treatment catalyst and preparation method thereof |
| CN105903460A (en) * | 2016-05-09 | 2016-08-31 | 东华大学 | Powdered activated carbon ectopic self generation and regeneration method for hard-degradation organic wastewater treatment |
| CN107128996A (en) * | 2017-05-19 | 2017-09-05 | 山东大学 | A kind of four Room swinging microwave waste-water processors and method |
| CN107416938A (en) * | 2017-05-19 | 2017-12-01 | 山东大学 | A kind of two sections of degraded swinging microwave waste-water processors of two stage adsorption and method |
| CN108097224A (en) * | 2018-01-02 | 2018-06-01 | 昆明理工大学 | A kind of method of Adsorption of Phenol agent regeneration and phenol harmless treatment |
| CN108187613A (en) * | 2017-12-20 | 2018-06-22 | 北京汇能兴业科技有限公司 | One kind is suitable for the regenerated Adsorption of Organic agent of high-temperature S removal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068960B (en) * | 2010-12-11 | 2012-07-18 | 上海纳米技术及应用国家工程研究中心有限公司 | Regeneration method of honeycomb activated carbon absorbent for absorbing nitric oxide |
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2003
- 2003-12-11 CN CN 200310109698 patent/CN1287893C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100528346C (en) * | 2005-12-21 | 2009-08-19 | 中国科学院山西煤炭化学研究所 | Adsorption-catalyst for treating phenol containing waste-water, preparation method and application thereof |
| CN101502804B (en) * | 2005-12-21 | 2010-12-15 | 中国科学院山西煤炭化学研究所 | Adsorption-catalyst for processing wastewater containing phenyl hydrate as well as production method and use |
| CN102049256B (en) * | 2009-10-27 | 2013-05-01 | 中国石油化工股份有限公司 | Waste water treatment catalyst and preparation method thereof |
| CN102019169A (en) * | 2010-12-06 | 2011-04-20 | 浙江商达环保有限公司 | Regeneration method of activated carbon in organosilicon wastewater treatment |
| CN102019169B (en) * | 2010-12-06 | 2012-07-04 | 浙江商达环保有限公司 | Regeneration method of activated carbon in organosilicon wastewater treatment |
| CN102372383A (en) * | 2011-01-25 | 2012-03-14 | 华东理工大学 | Integrated restoring system for water body polluted by hydrochloric ether |
| CN105903460A (en) * | 2016-05-09 | 2016-08-31 | 东华大学 | Powdered activated carbon ectopic self generation and regeneration method for hard-degradation organic wastewater treatment |
| CN107128996A (en) * | 2017-05-19 | 2017-09-05 | 山东大学 | A kind of four Room swinging microwave waste-water processors and method |
| CN107416938A (en) * | 2017-05-19 | 2017-12-01 | 山东大学 | A kind of two sections of degraded swinging microwave waste-water processors of two stage adsorption and method |
| CN107128996B (en) * | 2017-05-19 | 2019-12-31 | 山东大学 | Four-chamber rotary microwave wastewater treatment device and method |
| CN108187613A (en) * | 2017-12-20 | 2018-06-22 | 北京汇能兴业科技有限公司 | One kind is suitable for the regenerated Adsorption of Organic agent of high-temperature S removal |
| CN108097224A (en) * | 2018-01-02 | 2018-06-01 | 昆明理工大学 | A kind of method of Adsorption of Phenol agent regeneration and phenol harmless treatment |
| CN108097224B (en) * | 2018-01-02 | 2020-11-17 | 昆明理工大学 | Method for regenerating phenol adsorbent and harmlessly treating phenol |
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|---|---|
| CN1287893C (en) | 2006-12-06 |
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