CN107413186A - A kind of method for removing foul gas in antibiotic bacterium dregs processing procedure - Google Patents
A kind of method for removing foul gas in antibiotic bacterium dregs processing procedure Download PDFInfo
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- CN107413186A CN107413186A CN201710765503.1A CN201710765503A CN107413186A CN 107413186 A CN107413186 A CN 107413186A CN 201710765503 A CN201710765503 A CN 201710765503A CN 107413186 A CN107413186 A CN 107413186A
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- foul gas
- processing procedure
- gas
- bacterium dregs
- antibiotic bacterium
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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
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- 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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
Abstract
A kind of method for removing foul gas in antibiotic bacterium dregs processing procedure, it is related to the processing of foul gas in antibiotic bacterium dregs processing procedure.The invention solves in existing antibiotic bacterium dregs processing procedure so that low molecule is inorganic and the volatile malodorous gas of organic sulfur compound (such as hydrogen sulfide, mercaptan) and ammoniac compounds as main component efficient process and can not have the problems such as risk of environmental pollution.The present invention connects two electrolytic cells, using the mode of electrolysis respectively in two electrolytic cell situ generation high ferro acid groups and Active Chlorine, foul gas then is passed sequentially through into the electrolytic cell containing high ferro acid group and Active Chlorine, stench dirt gas is removed, that is, completed.The present invention is to foul gas clearance up to 98% or so.
Description
Technical field
The present invention relates to the processing of foul gas in antibiotic bacterium dregs processing procedure.
Background technology
Antibiotic bacterium dregs are waste residues caused by ferment antibiotics production process, the discharge capacity of the annual antibiotic bacterium dregs in China
Ten thousand tons about more than 200, a large number of nutrients is rich in bacteria residue, but because wherein containing a small amount of antibiotic residue, to prevent antibiotic
Residual triggers the risk of bacterial resistance in environment, and antibiotic bacterium dregs must first pass around processing and remove wherein antibiotic residue, so
It can just be used afterwards.Antibiotic bacterium dregs can volatilize foul gas in processing procedure, and the main component of these foul gas is
Inorganic and organic sulfur compound (such as hydrogen sulfide, mercaptan) and ammoniac compounds etc., not only pollute environment, be also detrimental to health,
Have to pass through processing.
There is not been reported for the method removed currently for foul gas in antibiotic bacterium dregs processing procedure.But with regard to foul gas
For minimizing technology, mainly there are absorption, absorption, chemical oxidation, burning and bioanalysis.Absorption method and absorption process are simply by effluvium
Body temporarily shifts, and does not destroy the root " organic substance " of stench thoroughly, so in the presence of the danger polluted again；Burning
Method is only suitable for the processing of high concentration stench, and removal process has a secondary pollution risk, the culture of bioanalysis bacteria selection compared with
For difficulty, take effect slightly slow and also poor to the waste gas adaptability of fluctuation of concentration, deodorizing effect can be by the shadow of the factors such as weather
Ring.
Electrochemical oxidation process is at present most possibly by one of high-level oxidation technology of industrial applications, with other effluviums
Body processing mode, which is compared, the advantages of can not comparing.It need not additionally add oxidant reduction agent, be produced in its course of reaction
Raw free radical and other strong oxidizers (such as ferrate, Active Chlorine) can the degradation of contaminant without selection, seldom produce secondary
Pollution, is a kind of environment friendly technology.In addition, electrochemical oxidation process can adjust reaction at any time by changing applied voltage electric current
Condition, controllability is strong, and reaction condition is gentle, is reacted under general normal temperature and pressure, and consersion unit is simple.
At present, it is relatively fewer that the research of foul gas is handled using electrochemical oxidation process, is especially mixed to sulfur-bearing and containing ammonia
There has been no research and application example for the processing of conjunction gas.A kind of profit is disclosed in the domestic patent of application number 200810048010.7
The method polluted with ferrate Harnessing gas, this method is mainly for indoor benzene compounds, sulfur dioxide in flue gas and nitrogen
The gaseous contaminants such as oxide remove, and its removal efficiency is still relatively low.
The content of the invention
The invention solves (such as vulcanize with organic sulfur compound so that low molecule is inorganic in existing antibiotic bacterium dregs processing procedure
Hydrogen, mercaptan etc.) and ammoniac compounds efficient process and can not have environmental pollution wind for the volatile malodorous gas of main component
The problems such as dangerous, and a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure is provided.
The method of foul gas in a kind of removal antibiotic bacterium dregs processing procedure of the present invention, it is to utilize electrochemical oxidation
Method removes the foul gas of antibiotic bacterium dregs processing procedure volatilization, specifically follows the steps below：
Two electrolytic cells are connected, using the mode of electrolysis respectively in two electrolytic cell situ generation high ferro acid groups and work
Property chlorine, then foul gas is passed through to the electrolytic cell containing high ferro acid group and Active Chlorine successively, by stench dirt gas remove, i.e., it is complete
The foul gas into described removal antibiotic bacterium dregs processing procedure.
The present invention operation principle be：Using electrochemical process respectively in two electrolytic cell situ generation ferrates and work
Property chlorine, caused foul gas passes sequentially through the electrolytic cell containing high ferro acid group and Active Chlorine in antibiotic bacterium dregs processing procedure,
Using the strong oxidizing property of high ferro acid group and Active Chlorine respectively by the sulfide in foul gas and ammoniac compounds oxidation removal.
The present invention produces strong oxidizer high ferro acid group and Active Chlorine using electrochemical process is in situ, and electrochemical process has technique simple
It is single, without excessive chemical reagent, product purity is high the advantages that.Whole electrolytic process is carried out at ambient temperature, reaction condition temperature
With equipment is simple, easy operational control.
One of the oxidant that the present invention is utilized ferrate is the oxysalt for having the positive sexavalence iron of highest valence state, is one
The strong oxidizer of class excellent performance, there is very high selectivity to the oxidation reaction of many organic matters, especially to containing sulphur pollution
Thing has higher reaction rate, and its reduzate is iron hydroxide, and secondary pollution will not be caused to environment.Utilize electrochemical process
The principle for generating high ferro acid group is using iron-based material as anode, and in high concentration strong base solution, iron is oxidized into high ferro acid group.Electricity
Solution in-situ preparation high ferro acid group and being used not only is easily reduced failure after can solving the problems, such as ferrate generation, also
Ferrate transfer and storage can be simplified, compared with handling pollutant effluents, this method is more suitable for handling foul gas.
The present invention utilizes electrolysis in-situ preparation Active Chlorine, ti-based coating oxide electrode is used as anode, with sodium chloride
Solution is electrolyte, and chlorion is oxidized into Active Chlorine.This kind of anode has an analysis, and chlorine overpotential is relatively low, current efficiency and yield compared with
High, the features such as energy consumption is small, there is fine performance to electrochemical oxidation generation Active Chlorine.Active Chlorine being capable of Quick Oxidation foul gas
Component, help further to improve degraded and the removal efficiency of stench dye thing.
The key of the present invention is online using the mode in-situ preparation high ferro acid group and Active Chlorine that are electrolysed and continuously removal is disliked
Odour, especially there is preferable treatment effect, foul gas to the multi-component stink gas of sulfur compound, ammoniac compounds
Removal rate is fast, efficiency high, and be particularly suitable for use in the higher foul gas of processing moisture content, and is not influenceed by gas component, instead
Mild condition is answered, continuously-running, equipment is simple and workable, application easy to spread.
The present invention is to foul gas clearance up to 98% or so.
Embodiment
Embodiment one：The side of foul gas in a kind of removal antibiotic bacterium dregs processing procedure of present embodiment
Method, it is the foul gas that the volatilization of antibiotic bacterium dregs processing procedure is removed using electrochemical oxidation process, specifically according to following step
Suddenly carry out：
Two electrolytic cells are connected, using the mode of electrolysis respectively in two electrolytic cell situ generation high ferro acid groups and work
Property chlorine, foul gas is then passed sequentially through into the electrolytic cell containing high ferro acid group and Active Chlorine, by stench dirt gas remove, i.e., it is complete
The foul gas into described removal antibiotic bacterium dregs processing procedure.
Embodiment two：Present embodiment is unlike embodiment one：In-situ preparation high ferro acid group
Condition is：It is 4~8mol/L NaOH solution as electrolyte using concentration using cast iron as anode using diaphragm type electrolytic cell,
Current density is 4~12mA/cm2, 20~30min is electrolysed under room temperature condition.It is other identical with embodiment one.
Embodiment three：Present embodiment is unlike embodiment one：In-situ preparation high ferro acid group
Condition is：It is 4~6mol/L NaOH solution as electrolyte using concentration using cast iron as anode using diaphragm type electrolytic cell,
Current density is 4~12mA/cm2, 20~30min is electrolysed under room temperature condition.It is other identical with embodiment one.
Embodiment four：Present embodiment is unlike embodiment one：The bar of in-situ preparation Active Chlorine
Part is：Using diaphragm type electrolytic cell, using ti-based coating oxide electrode as anode, using concentration as 5~20g/L sodium chloride solutions
Electrolyte pH=5~8, it is 5~10mA/cm in current density as electrolyte2, carry out under room temperature condition electrolysis 20~
40min.It is other identical with embodiment one.
Embodiment five：Present embodiment is unlike embodiment one：The bar of in-situ preparation Active Chlorine
Part is：Using diaphragm type electrolytic cell, using ti-based coating oxide electrode as anode, using concentration as 5~20g/L sodium chloride solutions
Electrolyte pH=5~8, it is 5~8mA/cm in current density as electrolyte2, carry out 20~40min of electrolysis under room temperature condition.
It is other identical with embodiment one.
Embodiment six：Present embodiment is unlike embodiment one：Ti-based coating oxide electrode
Refer to as anode with Ti/PbO2As anode or Ti/RuO2-TiO2As anode.It is other identical with embodiment one.
Embodiment seven：Present embodiment is unlike embodiment one：Diaphragm type electrolytic cell be H types every
Film electrolytic bath.It is other identical with embodiment one.
Embodiment eight：Present embodiment is unlike embodiment one：Foul gas is stink damp
Body, methyl mercaptan gas, ethyl mercaptan gas, ammonia or sulfur dioxide gas.It is other identical with embodiment one.
Embodiment nine：Present embodiment is unlike embodiment one：It is passed through the concentration of foul gas
No more than 100ppm.It is other identical with embodiment one.
Embodiment ten：Present embodiment is unlike embodiment one：Foul gas is containing high ferro
The total time that acid group and the electrolytic cell of Active Chlorine stop is 1~3s.It is other identical with embodiment one.
Present invention is not limited only to the content of the respective embodiments described above, the group of one of them or several embodiments
Contract sample can also realize the purpose of invention.
Beneficial effects of the present invention are verified by following examples：
Embodiment one：
1. two H type diaphragm types electrolytic cells are connected, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 1 extremely cast iron piece, negative electrode is stainless steel substrates, electrolysis
Liquid is 4mol/L NaOH solutions, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 2 extremely Ti/PbO2Electrode, negative electrode are graphite electrode, and electrolyte is 5g/L chlorine
Change sodium solution, electrolyte pH=6~7.Use constant current regulated power supply, current density 6mA/cm2, electricity is carried out at ambient temperature
Solution.
2. after being electrolysed 20min, foul gas is passed through successively in the anolyte of electrolytic cell 1 and electrolytic cell 2, gas exists
Residence time in two electrolytic cells is respectively maintained at 1-3s or so, and the clearance of foul gas is 99.5%.
The composition of foul gas is hydrogen sulfide gas and ammonia in the present embodiment, wherein sulfureted hydrogen gas concentration be 60~
80ppm, ammonia concentration 20ppm.
Embodiment two：
1. two H type diaphragm types electrolytic cells are connected, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 1 extremely cast iron piece, negative electrode is stainless steel substrates, electrolysis
Liquid is 5mol/L NaOH solutions, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 2 extremely Ti/RuO2-TiO2Electrode, negative electrode are graphite electrode, and electrolyte is
10g/L sodium chloride solutions, electrolyte pH=6~7.Use constant current regulated power supply, current density 8mA/cm2, in room temperature condition
Under be electrolysed.
2. after being electrolysed 20min, foul gas is passed through successively in the anolyte of electrolytic cell 1 and electrolytic cell 2, gas exists
Residence time in two electrolytic cells is respectively maintained at 1-3s or so, and the clearance of foul gas is 98%.
The composition of foul gas is methyl mercaptan gas and ammonia in the present embodiment, and wherein methyl mercaptan gas concentration is 40ppm,
Ammonia concentration is 50ppm.
Embodiment three：
1. two H type diaphragm types electrolytic cells are connected, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 1 extremely cast iron piece, negative electrode is stainless steel substrates, electrolysis
Liquid is 6mol/L NaOH solutions, the middle-jiao yang, function of the spleen and stomach of electrolytic cell 2 extremely Ti/PbO2Electrode, negative electrode are graphite electrode, and electrolyte is 10g/L chlorine
Change sodium solution, electrolyte pH=6~7.Use constant current regulated power supply, current density 6mA/cm2, electricity is carried out at ambient temperature
Solution.
2. after being electrolysed 30min, foul gas is passed through successively in the anolyte of electrolytic cell 1 and electrolytic cell 2, gas exists
Residence time in two electrolytic cells is respectively maintained at 1-3s or so, and the clearance of foul gas is 97%.
The composition of foul gas is ethyl mercaptan gas and ammonia in the present embodiment, and wherein ethyl mercaptan gas concentration is 30ppm,
Ammonia concentration is 30ppm.
Claims (10)
- A kind of 1. method for removing foul gas in antibiotic bacterium dregs processing procedure, it is characterised in that it is to utilize electrochemical oxidation Method removes the foul gas of antibiotic bacterium dregs processing procedure volatilization, specifically follows the steps below：Two electrolytic cells are connected, using the mode of electrolysis respectively in two electrolytic cell situ generation high ferro acid groups and activity Chlorine, then foul gas is passed through to the electrolytic cell containing high ferro acid group and Active Chlorine successively, stench dirt gas is removed, that is, completed Foul gas in described removal antibiotic bacterium dregs processing procedure.
- 2. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist It is in the condition of in-situ preparation high ferro acid group：Using diaphragm type electrolytic cell, using cast iron as anode, using concentration as 4~8mol/L's NaOH solution is 4~12mA/cm in current density as electrolyte2, 20~30min is electrolysed under room temperature condition.
- 3. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist It is in the condition of in-situ preparation high ferro acid group：Using diaphragm type electrolytic cell, using cast iron as anode, using concentration as 4~6mol/L's NaOH solution is 4~12mA/cm in current density as electrolyte2, 20~30min is electrolysed under room temperature condition.
- 4. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist It is in the condition of in-situ preparation Active Chlorine：Using diaphragm type electrolytic cell, using ti-based coating oxide electrode as anode, with concentration It is 5~20g/L sodium chloride solutions as electrolyte, electrolyte pH=5~8, is 5~10mA/cm in current density2, room temperature bar 20~40min of electrolysis is carried out under part.
- 5. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist It is in the condition of in-situ preparation Active Chlorine：Using diaphragm type electrolytic cell, using ti-based coating oxide electrode as anode, with concentration It is 5~20g/L sodium chloride solutions as electrolyte, electrolyte pH=5~8, is 5~8mA/cm in current density2, room temperature condition Under carry out 20~40min of electrolysis.
- 6. the method for foul gas, its feature in a kind of removal antibiotic bacterium dregs processing procedure according to claim 4 or 5 It is that ti-based coating oxide electrode refers to Ti/PbO as anode2As anode or Ti/RuO2-TiO2As anode.
- 7. the method for foul gas in a kind of removal antibiotic bacterium dregs processing procedure according to claim 2,3,4,5 or 6, It is characterized in that diaphragm type electrolytic cell is H type diaphragm type electrolytic cells.
- 8. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist In foul gas be hydrogen sulfide gas, methyl mercaptan gas, ethyl mercaptan gas, ammonia or sulfur dioxide gas.
- 9. the method for foul gas, its feature in a kind of removal antibiotic bacterium dregs processing procedure according to claim 1 or 8 It is that the concentration for being passed through foul gas is no more than 100ppm.
- 10. a kind of method for removing foul gas in antibiotic bacterium dregs processing procedure according to claim 1, its feature exist In foul gas containing high ferro acid group and Active Chlorine electrolytic cell stop total time be 1~3s.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185832A (en) * | 2007-09-06 | 2008-05-28 | 黄立维 | Method for improving sulphur dioxide clearance |
| CN101288824A (en) * | 2008-06-13 | 2008-10-22 | 华中科技大学 | Method for treating gaseous contamination using with ferrate |
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2017
- 2017-08-30 CN CN201710765503.1A patent/CN107413186A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185832A (en) * | 2007-09-06 | 2008-05-28 | 黄立维 | Method for improving sulphur dioxide clearance |
| CN101288824A (en) * | 2008-06-13 | 2008-10-22 | 华中科技大学 | Method for treating gaseous contamination using with ferrate |
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