CN101703882B - Method for treating smelly gas generated by waste water of pharmaceutical industry - Google Patents
Method for treating smelly gas generated by waste water of pharmaceutical industry Download PDFInfo
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- CN101703882B CN101703882B CN2009102279441A CN200910227944A CN101703882B CN 101703882 B CN101703882 B CN 101703882B CN 2009102279441 A CN2009102279441 A CN 2009102279441A CN 200910227944 A CN200910227944 A CN 200910227944A CN 101703882 B CN101703882 B CN 101703882B
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- alkali lye
- waste water
- reduction
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 72
- 238000010521 absorption reaction Methods 0.000 claims abstract description 71
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000009467 reduction Effects 0.000 claims abstract description 39
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 31
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract description 20
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 20
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 230000001590 oxidative effect Effects 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 111
- 239000003513 alkali Substances 0.000 claims description 49
- 239000007788 liquid Substances 0.000 claims description 37
- 230000008569 process Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 4
- 239000006096 absorbing agent Substances 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 2
- 239000000945 filler Substances 0.000 description 11
- 238000009826 distribution Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 6
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 210000000795 conjunctiva Anatomy 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 229910001872 inorganic gas Inorganic materials 0.000 description 2
- 210000004400 mucous membrane Anatomy 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 206010020565 Hyperaemia Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical compound OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- CCIVGXIOQKPBKL-UHFFFAOYSA-N ethanesulfonic acid Chemical compound CCS(O)(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 210000001034 respiratory center Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention relates to a method for treating smelly gas generated by the waste water of pharmaceutical industry, which belongs to the technical field of gas purification and aims at efficiently treating the high-concentration smelly gas of the pharmaceutical industry. The technical scheme of the method comprises the following steps: a. introducing collected smelly gases generated by the waste water of the pharmaceutical industry into an alkaline solution absorber tower to be absorbed by alkaline solution and removing most part of sulfurated hydrogen; b. introducing the gas treated by step a into an oxidation tower to react with chlorine dioxide solution and subjecting to oxidation treatment, removing the residual sulfurated hydrogen and other smelly gas; and c. introducing the gas treated by step b into a reduction absorber tower and absorbing oxidizing gas by reduction absorption solution so as to reach to purification emission standards, and then emitting the gas to the space. The method is especially suitable for high efficiency treatment of high concentration smelly gas generated by the waste water of the pharmaceutical industry, has the characteristics of low investment cost, stable operation, good treatment effect and wide application range, is environment-friendly and free of secondary pollution during treatment, is energy-saving, can thoroughly clean and substantially reduce operating cost.
Description
Technical field
The present invention relates to a kind of foul gas processing method, especially a kind of method of utilizing the foul gas of chemical reaction and the generation of absorption process treatment of pharmacy industry waste water belongs to the gas purification technique field.
Background technology
The wastewater flow rate of pharmaceutical industry is big, and content of organics is high, in the processing procedure of waste water, especially in the acidification process of waste water, can produce a large amount of foul gas.In the waste water; Content of organics is high, and sulphates content is high, and it is the foul gas of materials such as hydrogen sulfide, mercaptan and amine that waste water produces main component; Wherein the content of hydrogen sulfide is the highest and its smell, corrosivity and toxicity are also serious; The sense organ that the people is not only given in odor pollution to be stimulating, and the health of the harmful substance that is contained in the foul smell such as hydrogen sulfide, thio-alcohol, the direct harmful to human of phenols, can be adsorbed by positions such as people and animals' mucous membrane, conjunctivas; Cause that hyperemia, oedema and even inflammation appear in conjunctiva and respiratory system mucous membrane, the caused body respiratory center that concentration is high is benumbed and death.If be in for a long time in the environment of low concentration foul smell, can weaken the constitution, reproductive function descends, and Abwehrkraft des Koepers reduces, and brings out multiple infectious disease, so it has the duality of odor pollution and pernicious gas pollution, must handle.
At present, pharmaceutical industry processing foul gas ground method has multiple, like absorption method, utilizes some to have the material of strong adsorption capacity; Like active carbon, molecular sieve etc., absorption odor pollutant, and then desorb; The renewable use of adsorbent, it remove the low concentration foul gas aspect use very extensively, its advantage is that equipment investment is few, technology is simple; But adsorbent costs an arm and a leg, and also there are many technical problems in regenerative process, and very low for the high foul gas efficient of concentration; Burn processing foul gas method is to be the odorant combustion decomposition carbon dioxide and water, for the foul gas firing method of high concentration very high efficient is arranged, but cost is higher, for its inefficiency of foul gas of low concentration; Biological treatment is a kind of more common method, utilizes the odorant that makes of microorganism to decompose, thereby reaches the purpose of deodorizing, and its treatment facility is simple, and it is innoxious that treated foul gas can reach, but treatment effeciency is lower, and investment cost is higher, fluctuation of service; Chemical reaction method is to utilize oxidant and odor pollutant generation chemical reaction, makes it to be converted into the odorless composition, and this method cost is lower, and equipment is simple, and is stable, but the oxidant of generally selecting for use at present have treatment effeciency low, form secondary pollution problems easily.
Summary of the invention
The present invention is used to overcome the defective of prior art, but the method for the foul gas that a kind of simple to operate, the low high efficiency treatment of pharmacy of operating cost industry waste water produces is provided.
The alleged problem of the present invention is solved by following technical scheme:
The method of the foul gas that a kind of treatment of pharmacy industry waste water produces, its special feature is that it comprises the steps:
A. alkali lye absorbs: the foul gas feeding alkali lye absorption tower that the waste water of pharmaceutical industry of collecting produces is handled through the alkali lye absorption, remove the hydrogen sulfide of the overwhelming majority;
B. oxidation processes: the gas that will pass through a step process feeds the oxidation reaction tower, carries out oxidation processes with the ClO 2 solution reaction, removes residue hydrogen sulfide and other foul smell;
C. reduction is handled: the gas that will pass through the b step process feeds the reduction absorption tower, sponges oxidizing gas through the reduction absorption liquid, reaches the emission abatement standard, is discharged into the space.
The method of the foul gas that above-mentioned treatment of pharmacy industry waste water produces, said alkali lye is that mass concentration is NaOH or the potassium hydroxide solution of 1%-30%; Said reduction absorption liquid is that mass concentration is vulcanized sodium or the sodium hydrosulfide of 1%-20%; Said ClO 2 solution is that the concentration by chlorine dioxide generator production is the ClO 2 solution of 0.05-5%.
The method of the foul gas that above-mentioned treatment of pharmacy industry waste water produces; Said alkali lye absorption tower, oxidation reaction tower and reduction absorption tower are communicated with by exhaust tube; Middle and lower part, said alkali lye absorption tower is provided with the foul gas import, and reduction top, absorption tower is provided with the exhaust outlet that connects blast pipe, and the blast pipe place is provided with air-introduced machine; Said three towers are packed tower, and each tower constitutes the liquid peripheral passage by the circulating pump and the liquid circulating pipe of independent setting separately respectively.
The method of the foul gas that above-mentioned treatment of pharmacy industry waste water produces is equipped with water sprayer on the liquid circulating pipe of said oxidation reaction tower, and the suction inlet of water sprayer is connected with chlorine dioxide generator.
The method of the foul gas that above-mentioned treatment of pharmacy industry waste water produces, the liquid circulating pipe on alkali lye absorption tower is provided with branch road, and this way outlet is communicated with reduction top, absorption tower.
The inventive method absorbs the foul gas that the waste water of pharmaceutical industry of collecting produces earlier through alkali lye; Gas after the absorption carries out oxidation processes with the ClO 2 solution reaction again; Gas finally is discharged into the space after the reduction absorption liquid sponges oxidizing gas and reaches the emission abatement standard.The inventive method is used to handle foul gas; Especially be fit to the high concentration foul gas that high efficiency treatment of pharmacy industry waste water produces; Have that investment cost is low, stable, treatment effect is good, advantage of wide range of application, environmental protection in the processing procedure, non-secondary pollution produce, and be energy-conservation; Purify thoroughly, and can reduce operating cost significantly.
Description of drawings
Fig. 1 is the sketch map of equipment therefor of the present invention.
Each parts symbol is shown in the accompanying drawing: the import of 1-foul gas; The 2-liquid distribution plate; 3-alkali lye adds inlet; The 4-filler; The 5-exhaust tube; 6-alkali lye absorption tower; The 7-circulating pump; 8-reduction absorption liquid replenishes valve; 9-alkali lye circulation valve; Residual mouthful of 10-row; The 11-nozzle; 12-oxidation reaction tower; The 13-water sprayer; The 14-chlorine dioxide generator; The 15-branch road; 16-reduces the absorption tower; The 17-air-introduced machine; 18 blast pipes; The 19-body of the tower; 20 fillers support orifice plate, 21-liquid circulating pipe.
The specific embodiment
The foul gas that the present invention produces the waste water of pharmaceutical industry of collecting feeds the alkali lye absorption tower earlier and absorbs through alkali lye, removes the hydrogen sulfide of the overwhelming majority; To pass through alkali lye again and absorb the gas feeding oxidation reaction tower of handling, carry out oxidation processes, remove residue hydrogen sulfide and other foul smell with the ClO 2 solution reaction; The gas that will pass through oxidation processes then feeds the reduction absorption tower, sponges oxidizing gas through the reduction absorption liquid, reaches the emission abatement effluent standard to the space.Said alkali lye is that mass concentration is NaOH or the potassium hydroxide solution of 1%-30%; Said reduction absorption liquid is that mass concentration is vulcanized sodium or the sodium hydrosulfide of 1%-20%; Said ClO 2 solution is the ClO 2 solution of 0.05-5% by the concentration of chlorine dioxide generator production.
The foul odour that waste water of pharmaceutical industry produces mainly (contains H from hydrogen sulfide, mercaptan and materials such as other inorganic sulphide and amine
2S ,-SH ,-S-,-NH
2Deng group); Foul gas absorbs through alkali lye, has removed most hydrogen sulfide (more than 90%), simultaneously with the acid organic gas of part and inorganic gas neutralisation treatment in the alkali lye absorption tower; Alleviate the load of oxidation processes significantly, reach the purpose of cutting down the consumption of raw materials.In the alkali absorption process, hydrogen sulfide is absorbed by alkali lye and generates sulphurizing salt, and some organic acids are neutralized by alkali lye.
Oxidation processes is carried out in gas entering oxidation reaction tower and ClO 2 solution reaction through alkali lye absorbs after handling, and the ethyl mercaptan that foul gas is contained, dimethyl sulfide, ammonia, remaining hydrogen sulfide and other foul smell are removed.Chlorine dioxide is a kind of strong oxidizer, and it can effectively destroy organic pollution, like BaP, fear materials such as quinone, chloroform, carbon tetrachloride, phenol, chlorophenol, cyanide, chlorination does not take place during oxidation of organic compounds.Chlorine dioxide can (contain H with hydrogen sulfide, mercaptan and materials such as other inorganic sulphide and amine
2S ,-SH ,-S-,-NH
2Deng group) etc. material generation dehydration, make it be oxidized to other tasteless material rapidly.Because the strong oxidizing property of acid aqueous solution of chlorine dioxide, secondary oxidation is the core of entire process flow process.In oxidizing process, hydrogen sulfide all is oxidized into sulfate radical by chlorine dioxide, ethyl mercaptan (CH
3CH
2SH) be oxidized into ethyl sulfonic acid (CH
3CH
2SO
3H), methyl disulfide (CH-S-S-CH
2) be oxidized into pyrovinic acid (CH
3SO
3H), ammonia is fallen by solution absorption.
The chlorine that except oxygen, nitrogen, carbon dioxide, steam, mainly also contains chlorine dioxide and minute quantity through the gas after the oxidation processes; Being introduced into the reduction absorption tower again absorbs with vulcanized sodium or sodium hydrosulfide in carrying out; Gas is carried out last purification; Chlorine dioxide and chlorine all are reduced the absorption liquid absorption reaction and generate villaumite, and purified gas is discharged in the air.
Several concrete embodiment below are provided:
Embodiment 1: the alkali lye in the said alkali lye absorption tower is that mass concentration is 1% sodium hydroxide solution; Reduction absorption liquid in the said reduction absorption tower is that mass concentration is 5% sodium sulfide solution; Said ClO 2 solution is that the concentration by chlorine dioxide generator production is 0.05% ClO 2 solution.
Embodiment 2: the alkali lye in the said alkali lye absorption tower is that mass concentration is 15% sodium hydroxide solution; Reduction absorption liquid in the said reduction absorption tower is that mass concentration is 1% sodium sulfide solution; Said ClO 2 solution is that the concentration by chlorine dioxide generator production is 1% ClO 2 solution.
Embodiment 3: the alkali lye in the said alkali lye absorption tower is that mass concentration is 30% potassium hydroxide solution; Reduction absorption liquid in the said reduction absorption tower is that mass concentration is 20% NaHS liquid; Said ClO 2 solution is that the concentration by chlorine dioxide generator production is 5% ClO 2 solution.
Referring to Fig. 1; The course of work of the present invention is following: start air-introduced machine 17, each circulating pump 7 and chlorine dioxide generator 14, collection from the foul gas of pharmacy waste water under the effect of air-introduced machine 17, get into via the middle and lower part of foul gas import 1 from alkali lye absorption tower 6; Fill alkali lye in the alkali lye absorption tower 6; Alkali lye is got to the top on alkali lye absorption tower 6 by the bottom under the effect of circulating pump 7, spray on the liquid distribution plate 2 through nozzle 11, and alkali lye is distributed uniformly and flows on the filler 4 via the space of liquid distribution plate 2; And flow downward and support orifice plate 20 and reverse contact of foul gas from the middle and lower part on alkali lye absorption tower 6 through filler; Surface at filler 4 is absorbed, and has removed most hydrogen sulfide, simultaneously with the acid organic gas of part and inorganic gas neutralisation treatment in caustic wash tower; Hydrogen sulfide is absorbed by alkali lye and generates sulphurizing salt, and some organic acids are neutralized by alkali lye.
The gas of being gone out by alkali lye absorption tower 6 gets into through the middle and lower part of exhaust tube 5 from oxidation reaction tower 12; Fill ClO 2 solution in the oxidation reaction tower 12; ClO 2 solution is got to the top of oxidation reaction tower 12 by the bottom under the effect of circulating pump 7; Spray on the liquid distribution plate 2 through nozzle 11, ClO 2 solution is distributed uniformly and is flow on the filler 4 via the space of liquid distribution plate 2, and flows downward and support orifice plate 20 and gas reverse contact next from oxidation reaction tower 12 middle and lower parts through filler; Surface at filler 4 reacts, and the ethyl mercaptan that foul gas is contained, dimethyl sulfide, ammonia, remaining hydrogen sulfide and other foul smell are removed.When the liquid of circulation is through water sprayer 13 in oxidation reaction tower 12, produces negative pressure by water sprayer 13 ClO 2 solution that chlorine dioxide generator 14 produces is brought in the oxidation reaction tower 12, come the disappearance of supply chlorine dioxide.
The gas of being gone out by oxidation reaction tower 12 gets into through the middle and lower part of exhaust tube 5 from reduction absorption tower 16; Reduction fills the reduction absorption liquid in the absorption tower 16; The reduction absorption liquid under the effect of circulating pump 7 by the bottom get to the reduction absorption tower 16 the top; Spray on the liquid distribution plate 2 through nozzle 11, the reduction absorption liquid is distributed uniformly and is flow on the filler 4 via the space of liquid distribution plate 2, and flows downward and support orifice plate 20 and next reverse contact of gas in reduction 16 middle and lower parts, absorption tower through filler; Surface at filler 4 reacts, and chlorine dioxide and chlorine all are reduced the absorption liquid absorption reaction and generate villaumite.
Gas by go out on reduction absorption tower 16 is discharged through blast pipe 18 under the air-introduced machine effect.
Alkali lye in the alkali lye absorption tower 6 can add inlet 3 supplies through alkali lye.
Also can the reducing solution of the alkali lye that absorb foul gas as the reduction absorption be squeezed into reduction absorption tower 16 through circulating pump 7, during operation, open the reduction absorption liquid and replenish valve 8, close alkali lye circulation valve 9 and get final product.
The oxidation absorption liquid that reaction finishes and reduction absorption liquid are handled through arranging the Aerobic Process for Treatment pond that residual valve 10 is discharged into the pharmaceutical factory respectively.
Claims (3)
1. the method for the foul gas of a treatment of pharmacy industry waste water generation is characterized in that it comprises the steps:
A. alkali lye absorbs: the foul gas feeding alkali lye absorption tower that the waste water of pharmaceutical industry of collecting produces is handled through the alkali lye absorption, remove the hydrogen sulfide of the overwhelming majority;
B. oxidation processes: the gas that will pass through a step process feeds the oxidation reaction tower, carries out oxidation processes with the ClO 2 solution reaction, removes residue hydrogen sulfide and other foul smell;
C. reduction is handled: the gas that will pass through the b step process feeds the reduction absorption tower, sponges oxidizing gas through the reduction absorption liquid, reaches the emission abatement standard, is discharged into the space;
Said alkali lye is that mass concentration is NaOH or the potassium hydroxide solution of 1%-30%; Said reduction absorption liquid is that mass concentration is vulcanized sodium or the sodium hydrosulfide of 1%-20%; Said ClO 2 solution is that the concentration by chlorine dioxide generator production is the ClO 2 solution of 0.05-5%;
Said alkali lye absorption tower (6), oxidation reaction tower (12) and reduction absorption tower (16) are communicated with by exhaust tube (5); Middle and lower part, said alkali lye absorption tower is provided with foul gas import (1); Reduction top, absorption tower is provided with the exhaust outlet that connects blast pipe (18); The blast pipe place is provided with air-introduced machine (17), and said three towers are packed tower, and each tower is respectively by independent circulating pump (7) that is provided with and liquid circulating pipe (21) constitute the liquid peripheral passage separately.
2. the method for the foul gas that treatment of pharmacy industry waste water according to claim 1 produces is characterized in that water sprayer (13) is housed on the liquid circulating pipe of said oxidation reaction tower, and the suction inlet of water sprayer is connected with chlorine dioxide generator.
3. the method for the foul gas that treatment of pharmacy industry waste water according to claim 2 produces is characterized in that the liquid circulating pipe on said alkali lye absorption tower is provided with branch road (15), and this way outlet is communicated with reduction top, absorption tower (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102279441A CN101703882B (en) | 2009-12-04 | 2009-12-04 | Method for treating smelly gas generated by waste water of pharmaceutical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102279441A CN101703882B (en) | 2009-12-04 | 2009-12-04 | Method for treating smelly gas generated by waste water of pharmaceutical industry |
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| Publication Number | Publication Date |
|---|---|
| CN101703882A CN101703882A (en) | 2010-05-12 |
| CN101703882B true CN101703882B (en) | 2012-02-08 |
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| CN2009102279441A Active CN101703882B (en) | 2009-12-04 | 2009-12-04 | Method for treating smelly gas generated by waste water of pharmaceutical industry |
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| CN102641654B (en) * | 2012-04-28 | 2013-03-06 | 重庆紫光天化蛋氨酸有限责任公司 | Method for processing malodorous gas and device thereof |
| CN106237817A (en) * | 2016-09-06 | 2016-12-21 | 上海环境集团有限公司 | A kind of foul gas processing method and system |
| CN107991428A (en) * | 2017-11-27 | 2018-05-04 | 攀钢集团攀枝花钢铁研究院有限公司 | The assay method of chlorinity in chlorine-containing gas |
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| CN2899918Y (en) * | 2006-05-19 | 2007-05-16 | 贵阳铝镁设计研究院 | Device for purifying waste gas containing chloride |
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