CN110193271A - Volatile organic matter is used as the method for denitrifying carbon source in a kind of recycling exhaust gas - Google Patents
Volatile organic matter is used as the method for denitrifying carbon source in a kind of recycling exhaust gas Download PDFInfo
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- CN110193271A CN110193271A CN201910510678.7A CN201910510678A CN110193271A CN 110193271 A CN110193271 A CN 110193271A CN 201910510678 A CN201910510678 A CN 201910510678A CN 110193271 A CN110193271 A CN 110193271A
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- volatile organic
- organic matter
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- carbon source
- exhaust gas
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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
- B01D53/14—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 by absorption
- B01D53/1487—Removing organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Volatile organic matter is used as the method for denitrifying carbon source in a kind of recycling exhaust gas, is related to volatile organic matter.The following steps are included: 1) multi-stage countercurrent containing volatile organic waste gas absorbs；2) fermentation cylinder for fermentation will be entered by the liquid pump that partially absorbs in first absorption plant in step 1), and will obtain fermentation liquid；3) fermentation liquid obtained by step 2) is introduced into the absorbing liquid of first absorption plant；4) denitrifying carbon source will be used for by the fermentation liquid in the fermentor in step 2)；5) air tube that fermentor generates is introduced into first absorption plant.Suitable for recycling and comprehensive utilization containing volatile organic waste gas, i.e., is administered with less investment and operation and maintenance cost and contain volatile organic compounds, and can obtained for sewage denitrifying carbon source, is i.e. Environment control also saves resource.
Description
Technical field
The present invention relates to volatile organic matters, are used as denitrification more particularly, to volatile organic matter in a kind of recycling exhaust gas
The method of carbon source.
Background technique
Volatile organic matter is O in atmosphere3It is the key points and difficulties of air contaminant treatment with the important as precursors object of PM2.5.
A large amount of volatile organic matters are assembled in air is also easy to cause Urban Rain first rain COD concentration height in the process, with nitrogen and phosphorus one
Act the important pollution sources for becoming the environment such as river, lake, soil.
Common organic constituents containing volatile organic compounds are alcohols (methanol, ethyl alcohol, propyl alcohol, ethylene glycol etc.), aldehyde
Class (formaldehyde, acetaldehyde etc.), ketone (acetone, butanone etc.), organic acid (formic acid, acetic acid, propionic acid, butyric acid etc.), lipid (acetic acid second
Ester, the third rouge of acetic acid, ethyl acetate, acetic acid isoamyl rouge etc.), benzene homologues (benzene,toluene,xylene, phenol etc.), being widely used in
Work, external coating, synthetic leather, rubber and plastic products, printing packaging, textile printing and dyeing, wood-based plate manufacture, shoemaking, chemical fibre, electronics
The industries such as information.
Heating method, (direct combustion method (TO), heat accumulating type catalytic combustion method (RCO), stores heat exchange type Production by Catalytic Combustion Process (ECO)
Hot type heats method (RTO), rotary heat accumulating type combustion method (RRTO) etc.) it can be the organic matter in the exhaust gas containing volatile organic matter
Complete oxidation is water and carbon dioxide, and preferably most thoroughly, investment and O&M cost are relatively high, and design and operation is bad for regulation effect
When there are the risks such as combustion explosion.Bioanalysis is applicable in low-concentration organic exhaust gas or peculiar smell is administered, and exists and takes up a large area capital cost
With the problems such as high, operating cost is relatively low.Water spray/solution absorption method is (full due to the solubility by volatile organic matter
And vapour pressure) limitation removal rate is unstable, but investment and maintenance cost are lower, operation level requirement is not high, and exists and absorb
Liquid is further processed problem.
Active carbon adsorption removal rate is unstable, in need after active carbon loses adsorption capacity as dangerous waste incineration
Disposition or regeneration disposition, in storage and transportational process, the organic exhaust gas of absorption enters back into big discarded active carbon in the presence of desorption
The problem of gas.There is also active constituent, useless fluorescent tube handling problems are rich in exhaust gas for the Treatment process such as UV photodissociation, plasma.
In existing Treatment process containing volatile organic compounds, every kind of technology has respective merits and demerits, is using
It needs preferentially to use in the process.
Water paint (or water-based ink) is gradually promoted and applied as environmentally protective product, but organic containing a small amount of dissolubility
Object.Water soluble organic substance volatilization becomes the important component of exhaust gas, since water capacity is big, organic concentration in use
Low, using technologies such as traditional adsorption-desorption-burnings, there are certain difficulty, water or solvent absorptions and then biological treatment occupied area
Greatly, investment and operating cost are higher.Water paint (or water-based ink) used although volatile organic matter total amount is reduced
Content reduces after a small amount of water-soluble volatile organic compounds enter exhaust gas in journey, and there are certain difficulties for subsequent exhaust-gas treatment.
If be not further processed to absorbing liquid using absorption process processing organic exhaust gas, it is directly discharged into city sewer, meeting
Be again introduced into atmosphere in the duct, or even jeopardize pipe safety, and it is uncontrolled containing volatile organic matter in the good of sewage plant
Atmosphere can be also again introduced into oxygen aeration environment.
Chinese patent 201710416548.8 discloses a kind of low concentration concentration and processing side containing volatile organic compounds
Method describes the method that multi-stage countercurrent absorbs concentration organic exhaust gas, but is used for a long time and there are problems that the difficult separation of emulsification.China
Patent application 201810615466.0 discloses a kind of formula and preparation method thereof of denitrification compounded carbons, describes containing second
The scheme of alcohol, sodium acetate, calcium acetate, glucose as denitrification compounded carbons, but ingredient derives from industrial products, cost
It is higher and the problem of there is also production and transport and the volatility organic contaminations of use process.
6 kinds of typical abatement technologies in the investigation of Pearl River Delta typical industry industry Treatment process containing volatile organic compounds
(ancestor river etc., industrial source VOCs Treatment process effect actual measurement assessment [J], Research of Environmental Sciences, 2015,28 (6): 994-1000):
" activated carbon adsorption removal rate -98.1%~79.2% (there may be active carbon desorptions for negative value), water spray+activated carbon adsorption are gone
Except rate -167.4%~57.5%, activated carbon adsorption concentration+catalysis burning removal rate -3.8%~66.5%, low temperature plasma
Removal rate 34.1%~96.3%, solution absorb removal rate 22.8%~43.1%, water spray+solution and absorb removal rate 2.7%
~19.6% "；Water spray+solution absorption method can reach 41.8%~98.9% to alcohols, ketone and ethers removal rate.Investigation knot
Fruit shows, various technologies have certain removal rate, but the differences such as field of employment and configuration and operation and maintenance, leads to removal rate
It fluctuates very big.
Water spray+solution, which absorbs, removes the volatile organic compounds containing the higher alcohols of dissolubility, ketone and ethers
Rate is higher, and removal rate is lower it may be the case that the dissolubility of volatile organic matter is lower or volatile organic matter absorbs after being saturated
Absorbability decline institute is extremely.If the absorbing liquid absorbed after being saturated can be recycled, it is ensured that absorbing liquid is in unsaturated state,
Then absorption process may be the preferable good method for administering the organic compounds containing volatile water-soluble.
Summary of the invention
The purpose of the present invention is to provide can administer containing volatile organic compounds and obtain for sewage with instead
Carbon source is nitrified, Environment control economizes on resources simultaneously, there is volatility in small investment and a kind of low recycling exhaust gas of operation and maintenance cost
Machine object is used as the method for denitrifying carbon source.
The present invention the following steps are included:
1) multi-stage countercurrent containing volatile organic waste gas absorbs；
In step 1), it is described containing organic matter contained by volatile organic compounds be mainly alcohols, aldehydes, ketone, have
Machine acids, lipid, benzene homologues etc.；
The specific method that the multi-stage countercurrent containing volatile organic waste gas absorbs can are as follows: opens in exhaust gas absorption device
Water circulating pump and blower；Absorbing liquid starts to supplement in the last one absorption plant, and for water successively countercurrently to last
Absorption plant, penultimate absorption plant finally enter in first absorption plant；
Exhaust gas containing volatile organic matter is after multiple absorption plants, containing organic in the absorbing liquid of first absorption plant
Object concentration highest, the last one absorption plant are minimum containing organic concentration；
The absorption plant can set 2~5；The pH of absorbing liquid maintains 6~9.
2) fermentation cylinder for fermentation will be entered by the liquid pump that partially absorbs in first absorption plant in step 1), must fermented
Liquid；
In step 2), the time of the fermentation of the fermentor is 6~36h.
3) fermentation liquid obtained by step 2) is introduced into the absorbing liquid of first absorption plant；
It is converted into after the microbial fermentation cultivated in the fermented tank of absorbing liquid containing volatile organic matter containing acetic acid, propionic acid etc.
The fermentation liquid of volatile fatty acid is recycled in first absorption plant and uses as absorbing liquid, and increasing volatility in exhaust gas has
The solubility of machine object strengthens first absorption plant to the absorption efficiency of volatile organic matter.
4) denitrifying carbon source will be used for by the fermentation liquid in the fermentor in step 2)；
For fermentation liquid in the fermentor of step 2) after multiple cyclic absorption and fermentation, CODcr is concentrated into 8 000~100
It is pumped into tank car when 000mg/L or pipeline is transported to and the place of denitrifying carbon source is needed to comprehensively utilize.
5) air tube that fermentor generates is introduced into first absorption plant.
The present invention is suitable for recycling and comprehensive utilization containing volatile organic waste gas, i.e., with less investment and operation and maintenance
Expense, which is administered, contains volatile organic compounds, and can obtain for sewage denitrifying carbon source, i.e. Environment control also saves
Resource.What the absorbing liquid in absorption plant generated for water and after the fermented tank fermentation of the absorbing liquid containing volatile organic matter contains volatilization
The fermentation liquid of property fatty acid.The present invention is improved for the absorption process of the treatment process containing volatile organic compounds, by multiple
Counter-current absorption device and fermentor composition；Organic matter soluble easily in water is converted into volatile fatty acid, water or indissoluble will be slightly soluble in
It is converted into readily soluble or microsolubility substance in the volatile organic matter of water, increases the organic concentration of absorbing liquid, storing can be reduced
And the volatilization again of use process, transportation cost is reduced, fermentation liquid can be comprehensively utilized as novel denitrifying carbon source, reduce resource
Consumption, energy-saving and emission-reduction.
Detailed description of the invention
Fig. 1 is the process flow diagram of the embodiment of the present invention.
Specific embodiment
Following embodiment will the present invention is further illustrated in conjunction with attached drawing.
As shown in Figure 1, the embodiment of the present invention includes following steps:
1) multi-stage countercurrent containing volatile organic waste gas absorbs, method particularly includes: open the circulation in exhaust gas absorption device
Water pump and blower；Absorbing liquid starts to supplement in the last one absorption plant, and successively countercurrently absorb to last for water
Device, penultimate absorption plant finally enter in first absorption plant；
Exhaust gas containing volatile organic matter is after multiple absorption plants, containing organic in the absorbing liquid of first absorption plant
Object concentration highest, the last one absorption plant are minimum containing organic concentration；
The absorption plant can set 2~5；The pH of absorbing liquid maintains 6~9.
It is described containing organic matter contained by volatile organic compounds be mainly alcohols, aldehydes, ketone, organic acid, lipid,
Benzene homologues etc.,
2) fermentation cylinder for fermentation will be entered by the liquid pump that partially absorbs in first absorption plant in step 1), must fermented
Liquid, the time of the fermentation of the fermentor are 6~36h.
3) fermentation liquid obtained by step 2) is introduced into the absorbing liquid of first absorption plant；
It is converted into after the microbial fermentation cultivated in the fermented tank of absorbing liquid containing volatile organic matter containing acetic acid, propionic acid etc.
The fermentation liquid of volatile fatty acid is recycled in first absorption plant and uses as absorbing liquid, and increasing volatility in exhaust gas has
The solubility of machine object strengthens first absorption plant to the absorption efficiency of volatile organic matter.
4) denitrifying carbon source will be used for by the fermentation liquid in the fermentor in step 2)；
For fermentation liquid in the fermentor of step 2) after multiple cyclic absorption and fermentation, CODcr is concentrated into 8 000~100
It is pumped into tank car when 000mg/L or pipeline is transported to and the place of denitrifying carbon source is needed to comprehensively utilize.
5) air tube that fermentor generates is introduced into first absorption plant.
Specific embodiment is given below.
Embodiment 1
The organic exhaust gas of certain printing enterprise is mainly ethyl alcohol and ethyl acetate.
Exhaust tube discharge of the organic exhaust gas after two absorption plants after the processing of the devices such as UV through 25m high.
First absorption plant, second absorption plant absorbing liquid be water, absorbing liquid CODcr is about 10 000 after saturation
~20 000mg/L.
Absorbing liquid in first absorption plant is introduced into fermentor, the volume 15m of fermentor3。
Fermentor sanitary sewage and glucose inoculation, are gradually introducing absorbing liquid.
Fermentation liquid overflow in fermentor is into first absorption plant.
The air tube that fermentor generates is introduced into first absorption plant.
When the fermentation liquid CODcr in fermentor is accumulate to 40 000mg/L, tank car transports to sewage plant and does denitrification carbon
Source.
Embodiment 2
Certain organic exhaust gas main component is Tianna solution (acetate butyl), contains a small amount of dimethylbenzene.Organic exhaust gas is inhaled through first
Receiving apparatus (cascade) absorbs, and handles after absorbing using second absorption plant (spray column) through UV photodissociation, activated carbon adsorption etc.
High altitude discharge afterwards.
First absorption plant and second absorption plant are absorbed with water, and water is supplemented from second absorption plant, adverse current
Into in first absorption plant, the CODcr in first absorption plant absorbing liquid is 1 500~4 000mg/L.
Absorbing liquid in first absorption plant is introduced into fermentation cylinder for fermentation, the volume 10m of fermentor3。
Fermentor sanitary sewage and glucose inoculation, are gradually introducing the absorbing liquid of first absorption plant.
Absorbing liquid overflow in fermentor is into first absorption plant.
The air tube that fermentor generates is introduced into first absorption plant.
When the fermentation liquid CODcr in fermentor is accumulate to 20 000mg/L, tank car transports to sewage plant and does denitrification carbon
Source.
Claims (7)
1. volatile organic matter is used as the method for denitrifying carbon source in a kind of recycling exhaust gas, it is characterised in that the following steps are included:
1) multi-stage countercurrent containing volatile organic waste gas absorbs；
2) fermentation cylinder for fermentation will be entered by the liquid pump that partially absorbs in first absorption plant in step 1), and will obtain fermentation liquid；
3) fermentation liquid obtained by step 2) is introduced into the absorbing liquid of first absorption plant；
4) denitrifying carbon source will be used for by the fermentation liquid in the fermentor in step 2)；
5) air tube that fermentor generates is introduced into first absorption plant.
2. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as described in claim 1
In in step 1), described containing organic matter contained by volatile organic compounds is alcohols, aldehydes, ketone, organic acid, rouge
Class, benzene homologues.
3. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as described in claim 1
In in step 1), what the multi-stage countercurrent containing volatile organic waste gas absorbed method particularly includes: open exhaust gas absorption device
In water circulating pump and blower, absorbing liquid starts to be supplemented in the last one absorption plant for water, and successively adverse current to reciprocal the
One absorption plant, penultimate absorption plant finally enter in first absorption plant；The pH of absorbing liquid maintains 6~
9。
4. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as claimed in claim 3
2~5 are set in the absorption plant.
5. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as described in claim 1
In in step 2), the time of the fermentation of the fermentor is 6~36h.
6. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as described in claim 1
It is described that fermentation liquid obtained by step 2) is introduced into the specific method in the absorbing liquid of first absorption plant in step 3)
It is: is converted into after the microbial fermentation cultivated in the fermented tank of absorbing liquid containing volatile organic matter and volatilizees containing acetic acid, propionic acid etc.
Property fatty acid fermentation liquid, be recycled in first absorption plant as absorbing liquid and use, volatile organic matter in increase exhaust gas
Solubility, strengthen first absorption plant to the absorption efficiency of volatile organic matter.
7. method of the volatile organic matter as denitrifying carbon source in a kind of recycling exhaust gas, feature exist as described in claim 1
In in step 4), for the fermentation liquid in fermentor after multiple cyclic absorption and fermentation, CODcr is concentrated into 8 000~100
It is pumped into tank car when 000mg/L or pipeline is transported to and the place of denitrifying carbon source is needed to comprehensively utilize.
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| CN201910510678.7A CN110193271B (en) | 2019-06-13 | 2019-06-13 | Method for recycling volatile organic compounds in waste gas to serve as denitrification carbon source |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030003037A1 (en) * | 1999-09-06 | 2003-01-02 | Ebara Corporation | Apparatus for treating exhaust gases containing nitrides |
| JP2010024294A (en) * | 2008-07-16 | 2010-02-04 | Ihi Corp | Biological desulfurization apparatus and biological desulfurization method |
| CN101880115A (en) * | 2010-02-03 | 2010-11-10 | 王鹤立 | Method for supplementing denitrifying carbon source by utilizing excess sludge ethanol-type fermentation |
| CN206642550U (en) * | 2017-02-22 | 2017-11-17 | 上海清浥环保科技有限公司 | A kind of VOC elutes air water integrated equipment for wastewater treatment |
| CN107694288A (en) * | 2017-09-29 | 2018-02-16 | 北京石油化工学院 | A kind of handling process of water-insoluble VOCs waste gas |
| CN108525510A (en) * | 2018-04-13 | 2018-09-14 | 衢州市衢江区土壤肥料技术推广站 | A kind of environment-friendly type absorption processing method of organic fertilizer production technology waste gas |
-
2019
- 2019-06-13 CN CN201910510678.7A patent/CN110193271B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030003037A1 (en) * | 1999-09-06 | 2003-01-02 | Ebara Corporation | Apparatus for treating exhaust gases containing nitrides |
| JP2010024294A (en) * | 2008-07-16 | 2010-02-04 | Ihi Corp | Biological desulfurization apparatus and biological desulfurization method |
| CN101880115A (en) * | 2010-02-03 | 2010-11-10 | 王鹤立 | Method for supplementing denitrifying carbon source by utilizing excess sludge ethanol-type fermentation |
| CN206642550U (en) * | 2017-02-22 | 2017-11-17 | 上海清浥环保科技有限公司 | A kind of VOC elutes air water integrated equipment for wastewater treatment |
| CN107694288A (en) * | 2017-09-29 | 2018-02-16 | 北京石油化工学院 | A kind of handling process of water-insoluble VOCs waste gas |
| CN108525510A (en) * | 2018-04-13 | 2018-09-14 | 衢州市衢江区土壤肥料技术推广站 | A kind of environment-friendly type absorption processing method of organic fertilizer production technology waste gas |
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