CN108383174A - The method that produced exhaust-gas efficient removes paranitroanilinum is pre-processed using birch - Google Patents
The method that produced exhaust-gas efficient removes paranitroanilinum is pre-processed using birch Download PDFInfo
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- CN108383174A CN108383174A CN201810096880.5A CN201810096880A CN108383174A CN 108383174 A CN108383174 A CN 108383174A CN 201810096880 A CN201810096880 A CN 201810096880A CN 108383174 A CN108383174 A CN 108383174A
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- birch
- paranitroanilinum
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- mass fraction
- pretreatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The method that produced exhaust-gas efficient removes paranitroanilinum is pre-processed using birch the present invention provides a kind of comprising following steps：It collects birch and pre-processes produced exhaust gas, be passed through equipped in the closed container in paranitroanilinum waste liquid, degradation reaction is carried out in 30~80 DEG C；The pretreated method of birch is：Birch is put into reaction kettle, concentrated phosphoric acid hydrogen peroxide mix reagent is added and carries out pretreatment reaction, wherein the mass fraction of concentrated phosphoric acid is 60.0~70.0%, and the mass fraction of hydrogen peroxide is 5.0~8.0%.The present invention has outstanding removal effect for common paranitroanilinum, avoid existing the drawbacks of base and liquid-based treatment technology need to carry out special modification to raw material admittedly, truly realize " with it is useless directly control it is useless " technical purpose, realize bio-ethanol and prepare and the combination of two industries of wastewater treatment.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of to pre-process produced exhaust-gas efficient removal using birch
The method of paranitroanilinum.
Background technology
China is traditional textile big country, and in recent years, with the proposition required structural transformation of the economy, textile fabric production is discarded
The improvement of object treatment technology will increasingly be taken seriously.Dyestuff is one of main pollutant in textile fabric production process,
Complicated component has bio-toxicity and refractory organics more, is a kind of waste water difficult to deal with.
At this stage, it is absorption method, membrane separation process, Ozonation and photocatalytic method to the conventional method of the processing of pollution.
Authorization Notice No. provides a kind of processing method of waste water from dyestuff for the Chinese patent of 102659235 B of CN, passes through
The mode of multiphase Fenton catalysis oxidations solves the deficiency of common homogeneous Fenton oxidation, has significantly increased for organic waste
The efficiency of water process.
Authorization Notice No. provides a kind of method of processing waste water from dyestuff for the Chinese patent of 103588307 B of CN, utilizes
Microorganism electrochemical coupled system realizes the promotion to the degradation efficiency of waste water from dyestuff, is gone to acid orange 7 and methyl orange
Except efficiency respectively reaches 79% and 89.8%.
Authorization Notice No. provides the ecology of a kind of dyestuff or dyestuff intermediate for the Chinese patent of 104725897 B of CN
Environment-friendly treatment method, by the way that water, alkaline agent and organic solvent are added in azo dyes or aromatic amine dyestuff, after heating reaction,
It can get higher removal effect.
Authorization Notice No. provides a kind of microwave of waste water from dyestuff for the Chinese patent of 103739035 B of CN and quickly handles
Method realizes the promotion to the degradation treatment efficiency of dyestuff using the technology of nano zero valence iron combination microwave treatment.
Authorization Notice No. provides for China of 104310559 B of CN and a kind of handling waste water from dyestuff using modified straw
Method, utilize absorption of the modified straw to dyestuff, realize to orange II, eriochrome black T decoloring dye waste water rate reach 95% with
On, 75% or more removal effect is reached to paranitroanilinum decoloring dye waste water rate.
By above to the illustration of the treatment technology of existing waste water from dyestuff it is found that at present for the place of waste water from dyestuff
Reason, is typically based on solid absorbent or liquid reactions reagent carries out.Although the prior art realize to a certain extent " with
It is useless control it is useless ", by being modified processing to some industrial and agricultural production wastes, the product of removing dyestuff can be obtained, but this
The cost of a little modifications is usually higher, and the value of popularization and application is relatively low.Therefore, develop it is a kind of with existing production activity generate
Direct waste carry out " with it is useless directly control it is useless " handle dyestuff, be the project of next stage primary study.
Invention content
In view of the shortcomings of the prior art, the purpose of the present invention is to provide a kind of produced exhaust-gas efficient is pre-processed using birch
The method for removing paranitroanilinum, described method includes following steps：
It collects birch and pre-processes produced exhaust gas, be passed through equipped in the closed container in paranitroanilinum waste liquid, in 30~80
Degradation reaction is carried out in DEG C；
The pretreated method of birch is：
Birch is put into reaction kettle, concentrated phosphoric acid-hydrogen peroxide mix reagent is added and carries out pretreatment reaction, wherein is dense
The mass fraction of phosphoric acid is 60.0~75.0%, and the mass fraction of hydrogen peroxide is 3.6~8.0%.
The present inventor has carried out combining hydrogen peroxide using concentrated phosphoric acid in grant number is 103555774 B of CN
Preprocessing lignocellulose class raw material is used for the research of enzyme hydrolysis, and achieves outstanding technique effect.Enable inventor pleasantly surprised
It is when inventor is using the method in the patent, to be passed through using the exhaust gas that birch as raw material generate in the preprocessing process
When waste water containing paranitroanilinum, it is found that fast degradation occurs for paranitroanilinum in waste water.
Further, inventor is tested the palliating degradation degree of paranitroanilinum, finds the removal of paranitroanilinum
Efficiency has reached 100% unexpectedly.That is, the present invention for paranitroanilinum removal effect better than existing general solid
Base and liquid-based material.Those skilled in the art are it is found that the present invention is undoubtedly the place for opening paranitroanilinum in a kind of novel waste water
Reason mode.
Although being obviously improved sugared conversion ratio in 103555774 B of CN, important tribute is made that for bio-ethanol industry
It offers.However, the technology in practical application, inevitably generate some exhaust gas, causes pollution to a certain extent.Therefore,
Meaning of the present invention also resides in, and solves the problems, such as the recycling of the exhaust gas in 103555774 B of CN.
Currently, the present inventor still tests to gas componant therein, and probe into pollutant therein
Cutting mechanisms, while also carrying out corresponding scale application improvement.
The w/v of the birch and paranitroanilinum waste liquid is 1:0.5~2.Unless otherwise instructed, in the present invention
Signified w/v is g/mL or kg/L.
As a preferred solution of the present invention, the w/v of the birch and paranitroanilinum waste liquid is 8:7.5.
As a preferred solution of the present invention, the mass fraction of concentrated phosphoric acid is 60.0%, the mass fraction of hydrogen peroxide
It is 8.8%.
As the preferred embodiment of the present invention, when carrying out the degradation reaction, reaction temperature is 50~80 DEG C.
As shown in one embodiment of the present of invention, when the pretreatment reaction time is 1h, the removal efficiency of paranitroanilinum
Occur more significantly declining, only 91.0%.However, it is desirable to, it is noted that 91.0% removal rate be only relative to
It is relatively low, but relative to other for the pretreatment reaction time is can reach 95.7% or more removal rate when 4h
Wastewater processing technology, which is more outstanding.
In addition, when pretreatment time shortens, also there is decline by a relatively large margin in the removal rate of paranitroanilinum.
As a preferred solution of the present invention, when carrying out the degradation reaction, reaction temperature is 50 DEG C.Because at 50 DEG C
Under, the removal rate of pollutant is very outstanding, for the angle for saving reaction cost, carries out pollutant at such a temperature
Removal processing is both economical.
The degradation reaction is progress synchronous with the pretreatment, and it is described close to pre-process being passed through for generated exhaust gas synchronization
It closes and carries out degradation reaction in container, that is to say, that pretreatment time is the degradation reaction time.
In general, when carrying out birch pretreatment, the time of the pretreatment reaction is 1~5h.
As a preferred solution of the present invention, when carrying out birch pretreatment, the time of the pretreatment reaction is 4h.
Beneficial effects of the present invention：
The present invention has outstanding removal effect for common paranitroanilinum, avoids existing solid base and liquid-based processing
Technology needs the drawbacks of carrying out special modification to raw material, truly realize " with it is useless directly control it is useless " technology mesh
, realize the combination of bio-ethanol preparation and two industries of wastewater treatment.
Specific implementation mode
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is only used
It is further detailed in the present invention, should not be understood as limiting the scope of the invention, which is skilled in technique
Personnel still fall within protection scope of the present invention according to some nonessential modifications and adaptations that foregoing invention content is made.
Embodiment 1
Birch be crushed into 40 mesh sieve, obtain birch powder；8g birch powder is put into reaction kettle, is 1 by solid-to-liquid ratio:10
Ratio, phosphoric acid and hydrogen peroxide solution 80g are added into reaction kettle, the wherein mass fraction of concentrated phosphoric acid is 60.0%, mistake
The mass fraction of hydrogen oxide is 8.8%, and pretreated temperature is 50 DEG C, pretreatment time 4h；Collect what the when of pre-processing generated
Gas；And it synchronizes and gained gas is passed through equipped with closed container (the 50ml rule in 7.5ml paranitroanilinum waste liquid (100ppm)
Lattice) in, degradation reaction is carried out in 50 DEG C.
Embodiment 2
The mass fraction for adjusting concentrated phosphoric acid is 75.0%, and the mass fraction of hydrogen peroxide is 3.6%, remaining keeps and implements
Example 1 is consistent.95.7% is still reached to the removal rate of paranitroanilinum.
Embodiment 3
The weight for adjusting birch powder is 10g, and the volume of paranitroanilinum waste liquid is 5ml, remaining keeps and embodiment 1 one
It causes.95% or more is still reached to the removal rate of paranitroanilinum.
Embodiment 4
The weight for adjusting birch powder is 4g, and the volume of paranitroanilinum waste liquid is 8ml, remaining keeps and embodiment 1 one
It causes.95% or more is still reached to the removal rate of paranitroanilinum.
Embodiment 5
Adjustment pretreatment time is 1h, and the mass fraction for adjusting concentrated phosphoric acid is 65.0%, and the mass fraction of hydrogen peroxide is
7.0%, remaining keeps consistent with embodiment 1.The removal rate of paranitroanilinum is 98.9%.
Embodiment 6
Temperature when adjusting degradation reaction is 30 DEG C, remaining keeps consistent with embodiment 5.The removal rate of paranitroanilinum is
90.3%.
Embodiment 7
Adjustment pretreatment time is 3h, remaining keeps consistent with embodiment 1.The removal rate of paranitroanilinum is 96.4%.
Embodiment 8
Adjustment pretreatment time is 5h, remaining keeps consistent with embodiment 1.The removal rate of paranitroanilinum is 99.7%.
Claims (10)
1. the method for pre-processing produced exhaust-gas efficient removal paranitroanilinum using birch, which is characterized in that the method includes
Following steps：
It collects birch and pre-processes produced exhaust gas, be passed through equipped in the closed container in paranitroanilinum waste liquid, in 30~80 DEG C
Carry out degradation reaction；
The pretreated method of birch is：
Birch is put into reaction kettle, concentrated phosphoric acid-hydrogen peroxide mix reagent is added and carries out pretreatment reaction, wherein concentrated phosphoric acid
Mass fraction be 60.0~75.0%, the mass fraction of hydrogen peroxide is 3.6~8.0%.
2. according to the method described in claim 1, it is characterized in that, the w/v of the birch and paranitroanilinum waste liquid
It is 1:0.5~2.
3. according to the method described in claim 2, it is characterized in that, the w/v of the birch and paranitroanilinum waste liquid
It is 8:7.5.
4. according to the method described in claim 1, it is characterized in that, the mass fraction of concentrated phosphoric acid be 60.0%, hydrogen peroxide
Mass fraction is 8.8%.
5. according to the method described in claim 1, it is characterized in that, when carrying out the degradation reaction, reaction temperature is 50~80
℃。
6. according to the method described in claim 5, it is characterized in that, when carrying out the degradation reaction, reaction temperature is 50 DEG C.
7. according to claim 1~6 any one of them method, which is characterized in that the degradation reaction is and the pretreatment
It is synchronous to carry out, it pre-processes generated being passed through in the closed container for exhaust gas synchronization and carries out degradation reaction.
8. according to the method described in claim 1, it is characterized in that, carry out birch pretreatment when, the pretreatment reaction when
Between be 1~5h.
9. according to the method described in claim 8, it is characterized in that, carry out birch pretreatment when, the pretreatment reaction when
Between be 4h.
10. according to the method described in claim 1, it is characterized in that, the concentration of the paranitroanilinum is at least 100ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096880.5A CN108383174B (en) | 2018-01-31 | 2018-01-31 | Method for efficiently removing p-nitroaniline by utilizing waste gas generated by birch pretreatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810096880.5A CN108383174B (en) | 2018-01-31 | 2018-01-31 | Method for efficiently removing p-nitroaniline by utilizing waste gas generated by birch pretreatment |
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| Publication Number | Publication Date |
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| CN108383174A true CN108383174A (en) | 2018-08-10 |
| CN108383174B CN108383174B (en) | 2020-05-26 |
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| CN201810096880.5A Active CN108383174B (en) | 2018-01-31 | 2018-01-31 | Method for efficiently removing p-nitroaniline by utilizing waste gas generated by birch pretreatment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459324A (en) * | 2002-05-25 | 2003-12-03 | 优尼森有限公司 | Device and method for pretreating waste gas under moisture environment |
| CN101244878A (en) * | 2008-02-25 | 2008-08-20 | 南京大学 | Treatment for wastewater in para-nitraniline production and method for resource recovery and use |
| CN101288846A (en) * | 2008-05-09 | 2008-10-22 | 淮阴工学院 | Method for preprocessing and producing rice hull ash adsorbent using with microbe |
| CN107200384A (en) * | 2017-07-13 | 2017-09-26 | 陕西科技大学 | A kind of carbon fiber electrode preparation method of efficient production hydrogen peroxide treatment organic wastewater |
-
2018
- 2018-01-31 CN CN201810096880.5A patent/CN108383174B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459324A (en) * | 2002-05-25 | 2003-12-03 | 优尼森有限公司 | Device and method for pretreating waste gas under moisture environment |
| CN101244878A (en) * | 2008-02-25 | 2008-08-20 | 南京大学 | Treatment for wastewater in para-nitraniline production and method for resource recovery and use |
| CN101288846A (en) * | 2008-05-09 | 2008-10-22 | 淮阴工学院 | Method for preprocessing and producing rice hull ash adsorbent using with microbe |
| CN107200384A (en) * | 2017-07-13 | 2017-09-26 | 陕西科技大学 | A kind of carbon fiber electrode preparation method of efficient production hydrogen peroxide treatment organic wastewater |
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| CN108383174B (en) | 2020-05-26 |
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