CN1431022A - Method of treating smelly gases by use of ultraviolet radiation at high end and its equipments - Google Patents
Method of treating smelly gases by use of ultraviolet radiation at high end and its equipments Download PDFInfo
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- CN1431022A CN1431022A CN 03115442 CN03115442A CN1431022A CN 1431022 A CN1431022 A CN 1431022A CN 03115442 CN03115442 CN 03115442 CN 03115442 A CN03115442 A CN 03115442A CN 1431022 A CN1431022 A CN 1431022A
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- foul gas
- ultraviolet light
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Abstract
A method and apparatus for treating stink gas containing H2S and NH3 features that said stink gas is radiated by ultraviolet ray for less than 1.5 seconds per cubic meter. The wavelength of ultraviolet ray is less than or equal to 1850 Angstrons. Its advantages are high effect and no secondary pollution.
Description
Technical field:
The invention relates to the method and apparatus of gas treatment, particularly about the processing method and the equipment of foul gas.
Background technology:
The foul gas that the cloth that covers in air spreads is mainly from places such as garbage disposal plant, sewage pumping station, sewage treatment plant, feedstuff and fertilizer processing factory, livestock products farm, chemical fibre factory, Leather Factory, pulp mill and public lavatory, feces transfer stations.Particularly sewage pumping station is built in city or the residential block mostly, and the protein in its sewage, fat, carbohydrate are because the effect of various anaerobism, aerobic bacteria produces a large amount of hydrogen sulfide (H
2S), ammonia (NH
3) wait colourless foul gas, have strong impulse, make extremely feeling bad that the people smells, and be harmful to health.For improving town dweller's living environment quality, stop because the pollution of the foul gas that sewage produces adopts following several method to handle usually:
1. absorption method.Adopt active carbon, ion exchange resin, sulfonation matchmaker, adsorbents such as molecular sieve, silica gel, activated alumina adsorb odorant by the adsorption tower that above-mentioned various adsorbents are housed, and make gas purification.But the gas flow resistance of adsorption tower is big, needs to consume a large amount of gas flow power.The adsorption efficiency of adsorbent is directly proportional with the concentration of adsorbed material in addition, and efficient was low when concentration was low; Particularly under the bigger situation of air quantity, adsorption efficiency is poor.And the odor threshold of these foul gass extremely low (mostly being the ppb level), so clean-up effect is poor.In addition, adsorbent needs often to change, and not only increases operation sequence, equally also increases operating cost, is easy to generate secondary pollution again.
2. bioanalysis.Utilization attached to the microorganism on the porous material to the odorant biodegrade.This method is poor to the degradation effect of inorganic stench composition; And, not only require to have temperature in order to safeguard activation of microorganism, and the maintenance and operation of this system requires very high, and operating cost is 3 times of absorption method.In addition, a significant drawbacks of this method is that floor space is excessive, and is very heavy again.
3. active oxygen (being ozone) method.Utilize the ozone with high activity energy of ozonator generation and the inorganic molecule in the foul gas to react, change it NOx, the SO of no stink into
2, SO
3, H
2Micromolecule such as O.ZL00265091.6 number Chinese utility model patent is and a kind ofly utilizes that the all-wave quartz burner produces that ozone is sterilized, the example of sterilization and deodorize.But under the condition of big air quantity, high wind speed, foul gas is too short by the time of ozonator, does not reach the reaction required time, and it is not obvious to the organic molecule effect simultaneously, so deodorizing effect is not good.
4. ultraviolet irradiation.It is a kind of newer processing method, for example Japanese JP2000157621A and JP2001235201A patent documentation disclose a kind of method with gas with foreign flavor in ultraviolet radiation processing and the sterilization chamber respectively, but must share with the light mediator, and ultraviolet wavelength deodorizing effect in the scope of 315-400nm is just good.Because mediator easily lost efficacy after using a period of time, and its concentration of the foul gas in the sewage disposal is higher than indoor gas widely so fail to use in sewage disposal.
Just because of above these traditional foul gas processing methods all have unavoidable separately shortcoming and disadvantage, and handled foul gas is general all below the GB14554-93 secondary discharge standard, fails to obtain extensive utilization in sewage disposal department for a long time.
Summary of the invention:
A kind of foul gas processing method and the equipment of providing is provided, solves odor removal efficient height, non-secondary pollution, floor space is little, operating cost is low technical problem.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of high-end ultraviolet light foul gas processing method is characterized in that: less than/high-end the ultraviolet light that equals 1850 dusts the foul gas of flowing through is shone purified treatment with wavelength; The irradiation time S of this foul gas 〉=1.5 second/meter
3The power of this high-end ultraviolet light is by the contained H of this foul gas
2S and NH
3Concentration decision, 0.1 milligram/meter of every processing
3The H of concentration
2S and NH
3〉=40 watts and 〉=100 watts respectively of the power W of its high-end ultraviolet light.
Above-mentioned high-end ultraviolet light foul gas processing method is characterized in that: also can drench processing by further oxidation of hydrogen in statu nascendi, ozone, hydroxyl oxygen and the water that is trapped on the fibrous material through the gas behind the high-end irradiation under ultraviolet ray, remove H
2S and NH
3SO behind the decomposing oxidation
2And NO
XTo eliminate twice pollution.
Above-mentioned high-end ultraviolet light foul gas processing method is characterized in that: foul gas can carry out the processing of dust removal by filtration earlier before purified treatment.
A kind of high-end ultraviolet light foul gas treatment facility by above-mentioned processing method comprises shell, air inlet and air outlet, it is characterized in that: have at this into and out of the exposure cell between the air port; But be sequentially set with some tube racks in this exposure cell and be installed on this tube rack emission wavelength less than/equal the ultraviolet lamp tube of 1850 dusts, the spacing of each ultraviolet lamp tube≤150 millimeter.
Above-mentioned high-end ultraviolet light foul gas treatment facility is characterized in that: the oxidation shower bath that is provided with the fiberfill fibers material.
Above-mentioned high-end ultraviolet light foul gas treatment facility is characterized in that: be provided with the filter net type defecator.
Advantage of the present invention is as follows:
The present invention be utilize wavelength less than/(ε=h * C λ=6.72eV, h are Pu Kelangke constant=6.63 * 10 to equal the photon energy of the high-end ultraviolet light of 1850 dusts
-34C is the light velocity, λ is a wavelength) greater than odorant molecule in the foul gas in conjunction with bond energy (being maximum wherein) based on C=C bond energy 6.34eV, make foul gas taking in a large number and can under the bombardment of light quantum odorant branch wherein being decomposed in the associative key fracture, needn't directly just can reach deodorizing effect with the light mediator.Oxygen and moisture produce a large amount of hydrogen in statu nascendis, active oxygen (being ozone) and hydroxyl oxygen isoreactivity group in the air under the effect of this light quantum simultaneously, will be converted into CO after part odorant and these active gene generation oxidation reactions
2And H
2The SO of innocuous substances such as O and denier
2, not only deodorization speed is fast, efficient is high, and all effective to inorganic and organic foul gas, wide adaptability.Reach or be better than the first discharge standard of GB14554-93 regulation through the foul gas by the sewage generation of the present invention's processing.
2. determine the power of high-end ultraviolet light according to foul gas concentration, avoid the waste of the energy.
3. the fibrous material in the oxidation shower bath must not cleared up replacing.
4. floor space is little, is about 60% of absorption method.
5. operating cost is few, is 30% of absorption method, non-secondary pollution, and safeguard simple.
6. the windage of equipment is little, not influenced by air quantity, and treating capacity is big.
Description of drawings:
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is a device structure sketch map of the present invention.
The specific embodiment:
See also shown in Figure 1ly, method of the present invention has that foul gas is collected, high-end irradiation under ultraviolet ray and three main flow processs of gas discharging.The foul gas that sewage produces flows into an illumination place after collecting.In this illumination place, foul gas by wavelength less than/equal the high-end irradiation under ultraviolet ray of 1850 dusts, irradiation time S is 〉=1.5 seconds/meter
3, the molecule of foul gas is by the photon bombardment of high-end ultraviolet light and since the energy 6.72eV of photon greater than the foul gas molecule in conjunction with bond energy (the 6.34eV bond energy with C=C is a maximum), thereby interrupted associative key in the foul gas molecule, impel it to resolve into CO
2, H
2Innocuous substances such as O.For reaching this purpose, high-end ultraviolet light must have certain power W, and this power W determines according to the concentration of each composition in the pending odour.Because the foul gas that sewage produces is with H
2S and NH
3Be main, and easily measure, so this power W is with contained H in the foul gas
2S and NH
3Concentration and decide 0.1 milligram/meter of every processing
3The H of concentration
2S needs 40 watts of high-end ultraviolet lights, 0.1 milligram/meter of every processing at least
3The NH of concentration
3At least need 100 watts of high-end ultraviolet lights, if foul gas contains 0.1 milligram/meter simultaneously
3The H of concentration
2S and NH
3The time, power W 〉=140 of high-end ultraviolet light watt.Simultaneously oxygen and the moisture that mixes with foul gas then produces a large amount of hydrogen in statu nascendi, ozone and hydroxyl oxygen isoreactivity group under this photon effect, a part of odorant also can with these active group generation oxidation reactions, finally be converted into CO
2And H
2O and micro-SO
2No odour through photo-irradiation treatment is exhausted in the atmosphere at last.For making hydrogen in statu nascendi, ozone and hydroxyl oxygen isoreactivity group be arranged enough action time, increase an oxidation shower flow process again after being preferably in high-end irradiation under ultraviolet ray with the part odorant.Can obtain to be much better than the index discharge of first grade discharging through the processed gas of abundant oxidation of above-mentioned active group and water bathing.In addition,,, can increase filtering process, dust in the foul gas and particle are removed at pre-irradiation for giving full play to the radiation of high-end ultraviolet light.
See also Fig. 2, equipment of the present invention comprises shell 2, air inlet 1 and air outlet 7.Air inlet 1 and air outlet 7 are separately positioned on the two side ends of shell 2.Between air inlet 1 and air outlet 7, has exposure cell 5.Be disposed with some tube racks 51 in this exposure cell 5, be equipped with on this tube rack 51 emission wavelength less than/equal the ultraviolet lamp tube 52 of 1850 dusts.The setting of above-mentioned tube rack 51 and ultraviolet lamp tube 52 makes ultraviolet lamp tube 52 distance≤150 to each other millimeter.The power of ultraviolet lamp tube 51 is by the H in the processing foul gas
2S and NH
3Concentration and determine.5 front ends (being as the criterion with airflow direction) can be provided with defecator 4 in the exposure cell, adopt filter screen to make filter element filtering dust and particle to reduce flow resistance.5 rear ends can also be provided with oxidation shower bath 6 in the exposure cell.This oxidation shower bath can adopt a formula or tower, wherein be filled with fibrous material (as mineral wool, coma etc.), the top is provided with spray head, when postradiation processing gas passes through fibrous material, increase the time of staying on the one hand, active group and part odorant that the irradiation back is produced have enough oxidation times, can be detained the oxidation reinforced effect of active gene (as nascent oxygen, ozone, hydroxyl oxygen etc.) on the one hand, by the bathing of spray head ejection water smoke, remove acid-base material remaining in the gas again (as SO
2And NO
XDeng), in order to avoid regeneration is cleaned in twice pollution simultaneously.Be provided with blower fan 3 at defecator 4 front ends and carry out the foul gas collection, and reach the power of discharging for the individual defecator 4 of flowing through of one, exposure cell 5, oxidation shower bath 6.Blower fan 3 can be centrifugal, also can be axial-flow type.7 places are provided with return air inlet 8 at shell 2 nearly exhaust outlets.Be provided with the connecting pipe (not shown) between this return air inlet 8 and the air inlet 1, return air inlet 8 places also are provided with the adjustable valve of aperture, by return air inlet 8 can by the content of contained above-mentioned active group in the gas after handling what, make the gas after the part or all of processing get back to air inlet 1, with new foul gas recycling processing.
Claims (6)
1, a kind of high-end ultraviolet light foul gas processing method is characterized in that: less than/high-end the ultraviolet light that equals 1850 dusts the foul gas of flowing through is shone purified treatment with wavelength; The irradiation time S of this foul gas 〉=1.5 second/meter
3The power of this high-end ultraviolet light is by the contained H of this foul gas
2S and NH
3Concentration decision, 0.1 milligram/meter of every processing
3The H of concentration
2S and NH
3〉=40 watts and 〉=100 watts respectively of the power W of its high-end ultraviolet light.
2, high-end ultraviolet light foul gas processing method according to claim 1, it is characterized in that: also can drench processing through the gas behind the high-end irradiation under ultraviolet ray, remove H by further oxidation of hydrogen in statu nascendi, ozone, hydroxyl oxygen and the water that is trapped on the fibrous material
2S and NH
3SO behind the decomposing oxidation
2And NO
XTo eliminate twice pollution.
3, high-end ultraviolet light foul gas processing method according to claim 1 and 2, it is characterized in that: foul gas can carry out the processing of dust removal by filtration earlier before purified treatment.
4, a kind of high-end ultraviolet light foul gas treatment facility according to claim 1 comprises shell, air inlet and air outlet, it is characterized in that: have at this into and out of the exposure cell between the air port; But be sequentially set with some tube racks in this exposure cell and be installed on this tube rack emission wavelength less than/equal the ultraviolet lamp tube of 1850 dusts, the spacing of each ultraviolet lamp tube≤150 millimeter.
5, high-end ultraviolet light foul gas treatment facility according to claim 4 is characterized in that: the oxidation shower bath that is provided with the fiberfill fibers material.
6, according to claim 4 or 5 described high-end ultraviolet light foul gas treatment facilities, it is characterized in that: be provided with the filter net type defecator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031154425A CN1190238C (en) | 2003-02-18 | 2003-02-18 | Method of treating smelly gases by use of ultraviolet radiation at high end and its equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031154425A CN1190238C (en) | 2003-02-18 | 2003-02-18 | Method of treating smelly gases by use of ultraviolet radiation at high end and its equipments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1431022A true CN1431022A (en) | 2003-07-23 |
| CN1190238C CN1190238C (en) | 2005-02-23 |
Family
ID=4790646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031154425A Expired - Fee Related CN1190238C (en) | 2003-02-18 | 2003-02-18 | Method of treating smelly gases by use of ultraviolet radiation at high end and its equipments |
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|---|---|
| CN (1) | CN1190238C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327400B (en) * | 2008-07-18 | 2011-05-11 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN103657375A (en) * | 2014-01-07 | 2014-03-26 | 上海科洋科技股份有限公司 | Method and system for removing trace SO2 in tail gas by gas phase oxidation |
-
2003
- 2003-02-18 CN CNB031154425A patent/CN1190238C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327400B (en) * | 2008-07-18 | 2011-05-11 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN103657375A (en) * | 2014-01-07 | 2014-03-26 | 上海科洋科技股份有限公司 | Method and system for removing trace SO2 in tail gas by gas phase oxidation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1190238C (en) | 2005-02-23 |
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Granted publication date: 20050223 Termination date: 20120218 |