CN106039983A - Biofilm formation starting method of biotrickling system for degrading hydrophobic and volatile organic compounds - Google Patents
Biofilm formation starting method of biotrickling system for degrading hydrophobic and volatile organic compounds Download PDFInfo
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- CN106039983A CN106039983A CN201610552886.XA CN201610552886A CN106039983A CN 106039983 A CN106039983 A CN 106039983A CN 201610552886 A CN201610552886 A CN 201610552886A CN 106039983 A CN106039983 A CN 106039983A
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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
- B01D53/84—Biological processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention discloses a biofilm formation starting method of a biotrickling system for degrading hydrophobic and volatile organic compounds. The method includes a liquid phase domestication stage of inoculated sludge, a biofilm formation stage and a starting stage. After domestication of the inoculated sludge is completed outside a tower, a matrix high in mass concentration and easy to biodegrade is used as a sole carbon source for completing strain biofilm formation, and then a gas and liquid phase combination method is used for starting the biotrickling system. The whole step process is reasonable in design, the optimal liquid phase domestication condition of the inoculated sludge, the optimal strain biofilm formation condition and the optimal starting condition for the biotrickling system through the gas and liquid phase combination method are screened out through a great number of experiments, the biofilm formation and starting time of the biotrickling system can be greatly shortened, the working efficiency of the hydrophobic VOCs biotrickling system is improved, and the biofilm formation starting method has important application value.
Description
Technical field
The present invention relates to a kind of method for hydrophobicity volatile organic matter biological dripping and filtering system start-up of degrading, suitable
For the biological cleaning of hydrophobicity volatile organic matter, belong to biological treatment technology for waste gas field.
Background technology
Biochemical method organic exhaust gas is one of focus of research at present, relative to traditional treatment method, and skill of carrying out a biological disposal upon
Art has the advantages such as treatment effeciency height, capital construction and operating cost is low, non-secondary pollution.Biological fitler method and biological scrubber by
Being widely used in deodorization, during with hydrophobicity volatile organic matter (VOCs) for degraded object, biological dripping and filtering system then shows
Higher organic matter degradation ability.
The bioavailability of hydrophobicity VOCs is mainly limited by two factors: one is pollutant from can not be by micro-life
The nonaqueous phase that thing utilizes is to the mass transfer rate of the aqueous phase that can be utilized by microorganism；Two is that pollutant are exposed to microbial cell film
Concentration.Can biological dripping and filtering system quickly start is one of the key of success or failure, and the committed step of startup is biofilm, colonization method
Quick spoil disposal method, liquid phase batch (-type) method, liquid phase is typically had to flow the methods such as strengthening biofilm method continuously.
The time of the start-up of existing biological dripping and filtering system is longer, it is generally required to more than 8 days, treatment effeciency is relatively low,
Production efficiency is relatively low.
Summary of the invention
Goal of the invention: it is an object of the invention to for utilizing the inefficient problem of microbial degradation m-dichlorobenzene, it is provided that one
Plant the bio-enhancer improving microbial degradation m-dichlorobenzene efficiency in the liquid phase that component proportioning is scientific and reasonable, efficient, economic,
And utilize this bio-enhancer to reach to promote the maximized purpose of degradation efficiency by reasonable adding method.
Technical scheme: for realizing object above, the technical scheme that the present invention takes is:
A kind of start-up method of hydrophobicity volatile organic matter biological dripping and filtering system of degrading, it comprises the following steps:
(1) seed sludge liquid phase domestication: with process petrochemical plant sewage aerobic activated sludge as seed sludge, with quality
Concentration be 1500～2000mg/L liquid phase hydrophobicity volatile organic matter tame, domestication the stage using glucose as common generation
Thanking to substrate, the mass concentration that control glucose adds is 1 with the mass concentration ratio of hydrophobicity volatile organic matter emulsion:
300～400, in domestication solution, carbon, nitrogen, the mass ratio of phosphorus are 100:5:1, reach with hydrophobicity volatile organic matter clearance
More than 50% mark terminated as the domestication stage；
(2) in the biofilm stage: with glucose as sole carbon source, in circulation liquid bath, add compound fertilizer, circulation simultaneously
In liquid, glucose quality concentration is 4000～5000mg/L, carbon in spraying nutrient solution: nitrogen: the mass ratio of phosphorus is 100:5:1；
(3) startup stage: biological dripping and filtering system is passed through hydrophobicity volatile organic matter gas, the matter of volatile organic matter
Amount concentration is not less than 1500mg/m3, circulation liquid bath adds glucose as co-metabolic substance, the mass concentration that glucose adds
Controlling 5～10mg/L, add rhanolipid as biosurfactant, mass concentration is 300～500mg/L, to strengthen gas phase
With the mass transfer effect of hydrophobicity volatile organic matter in liquid phase, with mass concentration as 4000mg/m3Hydrophobicity volatility organic
In thing simulation gas, pollutants removal rate reaches more than 50% for starting end mark.
Preferably, the start-up side of above-described degraded hydrophobicity volatile organic matter biological dripping and filtering system
Method, step (2) start-up condition is: temperature 20～30 DEG C, and the void tower time of staying is 120s, and nutritional solution pH value is 3～8, control
In unit interval processed, nutritional solution spray flux accounts for the 30-70% of filler admission space, and the spray flux of nutritional solution is 20L/h.
Preferably, the start-up side of above-described degraded hydrophobicity volatile organic matter biological dripping and filtering system
Method, in step (2), in the stage of biofilm, biological dripping and filtering system is only passed through air, it is provided that the oxygen needed for aerobic growth；
After the seed sludge tamed is passed through the sieve sieving of 80 mesh, add in the circulation liquid bath of biological dripping and filtering system, following simultaneously
Glucose and the nutrient such as nitrogen, phosphorus is added so that in circulation fluid, glucose quality concentration is 4000～5000mg/ in ring liquid bath
L, carbon in spraying nutrient solution: nitrogen: the mass ratio of phosphorus is 100:5:1, is quickly completed strain biofilm in 2～3 days.
Preferably, the start-up side of above-described degraded hydrophobicity volatile organic matter biological dripping and filtering system
Method, in step (3), carries out the startup of biological dripping and filtering system with liquid phase combination method: startup stage, logical in biological dripping and filtering system
Entering hydrophobicity volatile organic matter gas, the mass concentration of volatile organic matter is not less than 1500mg/m3, simultaneously at nutrition liquid bath
Interior interpolation inorganic nutritive element, the proportioning of inorganic nutritive element is: NH4Cl 800mg/L, Na2HPO4200mg/L, KH2PO4
400mg/L, MgSO4·7H2O 340mg/L, FeSO4·7H2O 10mg/L, CaCl215mg/L, ZnSO4·7H2O 0.5mg/
L, Na2MoO4·2H2O 0.5mg/L。
Beneficial effect: the degraded hydrophobicity VOCs biological dripping and filtering system start-up method that the present invention provides, the present invention is first
After completing domestication outside seed sludge tower, it is rapidly completed strain biofilm with high concentration easily biological-degradable substrate for sole carbon source,
The startup of biological dripping and filtering system is carried out again with liquid phase combination method.Whole process is reasonable in design, especially by a large amount of real
Testing the liquid phase acclimation conditions filtering out optimal seed sludge, strain biofilm condition and liquid phase combination method carry out bio-trickling system
The entry condition of system.Experiment proves that the method can be quickly completed strain biofilm in 2～3d, during the startup of biological dripping and filtering system
Between 10～15 days.It is substantially shorter biological dripping and filtering system biofilm and startup time, improves hydrophobicity VOCs biological dripping and filtering system
Work efficiency, has important using value.
Accompanying drawing explanation
Fig. 1 is that biological dripping and filtering system processes styrene waste gases clearance variation diagram.
Detailed description of the invention
The bio-trickling filter that the present invention uses is made up of diameter 20cm, the lucite of a height of 180cm, device dischargeable capacity
For 0.04m3.Device is divided into spray section, air inlet section and 4 filling packing section, each intersegmental with Flange joint.With modified haydite with many
Face hollow ball is filler, and bed stuffing height is 80cm, point 4 layers of filling, and every layer of packed height 20cm arranges one in every layer of packing section
Individual thief hatch of giving vent to anger.
(1) the liquid phase domestication of seed sludge: seed sludge removes supernatant and substrate sediment through eluriating, and adds a certain amount of
Water forms active sludge intermixture, and aeration is after 48 hours, and every day is to being quantitatively adding glucose and nitrogen, phosphorus and trace unit in mixed liquor
Element, control ph, about 7, is changed a culture fluid in every 48 hours, is cultivated and continue 6 days altogether.Mud after cultivating 6 days is added
In culturing sludge container, add the styrene emulsion prepared in advance so that styrene in liquid in container acclimation sludge
Concentration be 1500～2000mg/L.In the domestication stage, in container, add glucose as co-metabolic substance, control glucose
The mass concentration added and cinnamic mass concentration ratio are 1:300～400；In container, add nitrogen, phosphorus etc. inorganic simultaneously
Nutritional solution so that in liquid, the mass ratio C:N:P of carbon nitrogen phosphorus is 100:5:1.In the domestication stage, styrene in detection domestication container
Mass concentration, in an acclimation period, styrene clearance reaches more than 50% mark terminated as the domestication stage.
Table 1 sludge acclimatization stage process parameter
(2) in the biofilm stage: start-up condition is: temperature 20～30 DEG C, the void tower time of staying is 120s, nutritional solution pH value
Being 7～8, in controlling the unit interval, nutritional solution spray flux accounts for the 50% of filler admission space, and the spray flux of nutritional solution is 20L/h.
In the stage of biofilm, biological dripping and filtering system is only passed through air, it is provided that the oxygen needed for aerobic growth；The inoculation that will have tamed
After mud is by the sieve sieving of 80 mesh, add in the circulation liquid bath of biological dripping and filtering system, in circulation liquid bath, add Portugal simultaneously
Grape sugar and the nutrient such as nitrogen, phosphorus so that in circulation fluid, glucose quality concentration is 4000～5000mg/L, spraying nutrient solution,
Nutritional solution is by NH4Cl、KH2PO4、CaCl2、FeCl3、MnSO4、ZnSO4、CuSO4Prepare in proportion with glucose, carbon in nutritional solution:
Nitrogen: the mass ratio of phosphorus is 100:5:1, is quickly completed strain biofilm in 2～3 days.
(3) liquid phase combination method start-up is used: biological dripping and filtering system is passed through styrene gas, cinnamic quality
Concentration is not less than 1500mg/m3, circulation liquid bath adds glucose as co-metabolic substance, the mass concentration control that glucose adds
System, 5～10mg/L, adds rhanolipid as biosurfactant, and mass concentration is 300～500mg/L, simultaneously at nutritional solution
(proportioning of inorganic nutritive element is: NH to add inorganic nutritive element in groove4Cl 800mg/L, Na2HPO4200mg/L, KH2PO4
400mg/L, MgSO4·7H2O 340mg/L, FeSO4·7H2O 10mg/L, CaCl215mg/L, ZnSO4·7H2O 0.5mg/
L, Na2MoO4·2H2O 0.5mg/L.) to strengthen the mass transfer effect of Hydrophobic Styrene in gas phase and liquid phase, as it is shown in figure 1, with
Mass concentration is 4000mg/m3Styrene clearance reach more than 50% for start end mark.
Embodiment of above only for technology design and the feature of the present invention are described, its object is to allow and is familiar with technique
People understands present invention and is carried out, and can not limit the scope of the invention with this, all real according to spirit of the present invention
The equivalence that matter is done changes or modifies, and all should contain within the scope of the present invention.
Claims (5)
1. the start-up method of a hydrophobicity volatile organic matter biological dripping and filtering system of degrading, it is characterised in that it includes
Following steps:
(1) seed sludge liquid phase domestication: with process petrochemical plant sewage aerobic activated sludge as seed sludge, with mass concentration
Be 1500～2000mg/L liquid phase hydrophobicity volatile organic matter tame, domestication the stage using glucose as Co metabolism base
Matter, control the mass concentration ratio of the mass concentration that adds of glucose and hydrophobicity volatile organic matter emulsion be 1:300～
400, in domestication solution, carbon, nitrogen, the mass ratio of phosphorus are 100:5:1, with hydrophobicity volatile organic matter clearance reach 50% with
On the mark that terminates as the domestication stage；
(2) in the biofilm stage: with glucose as sole carbon source, in circulation liquid bath, add compound fertilizer, in circulation fluid simultaneously
Glucose quality concentration is 4000～5000mg/L, carbon in spraying nutrient solution: nitrogen: the mass ratio of phosphorus is 100:5:1；
(3) startup stage: being passed through hydrophobicity volatile organic matter gas in biological dripping and filtering system, the quality of volatile organic matter is dense
Degree is not less than 1500mg/m3, circulation liquid bath adds glucose as co-metabolic substance, the mass concentration that glucose adds controls
5～10mg/L, adding rhanolipid as biosurfactant, mass concentration is 300～500mg/L, to strengthen gas phase and liquid
The mass transfer effect of mutually middle hydrophobicity volatile organic matter, with mass concentration as 4000mg/m3Hydrophobicity volatile organic matter mould
Intend pollutants removal rate in gas and reach more than 50% for starting end mark.
The start-up method of degraded hydrophobicity volatile organic matter biological dripping and filtering system the most according to claim 1, its
Being characterised by, step (2) start-up condition is: temperature 20～30 DEG C, and the void tower time of staying is 120s, and nutritional solution pH value is 3
～8, in the control unit interval, nutritional solution spray flux accounts for the 30-70% of filler admission space, and the spray flux of nutritional solution is 20L/h.
The start-up method of degraded hydrophobicity volatile organic matter biological dripping and filtering system the most according to claim 1, its
Being characterised by, in step (2), in the stage of biofilm, biological dripping and filtering system is only passed through air, it is provided that needed for aerobic growth
Oxygen；After the seed sludge tamed is passed through the sieve sieving of 80 mesh, add in the circulation liquid bath of biological dripping and filtering system, simultaneously
In circulation liquid bath, add glucose and the nutrient such as nitrogen, phosphorus so that in circulation fluid glucose quality concentration be 4000～
5000mg/L, carbon in spraying nutrient solution: nitrogen: the mass ratio of phosphorus is 100:5:1, is quickly completed strain biofilm in 2～3 days.
The start-up method of degraded hydrophobicity volatile organic matter biological dripping and filtering system the most according to claim 1, its
Being characterised by, in step (2), nutritional solution is by NH4Cl、KH2PO4、CaCl2、FeCl3、MnSO4、ZnSO4、CuSO4Press with glucose
Proportions, carbon in nutritional solution: nitrogen: the mass ratio of phosphorus is 100:5:1.
The start-up method of degraded hydrophobicity volatile organic matter biological dripping and filtering system the most according to claim 1, its
Be characterised by, in step (3), carry out the startup of biological dripping and filtering system with liquid phase combination method: startup stage, bio-trickling system
Being passed through hydrophobicity volatile organic matter gas in system, the mass concentration of volatile organic matter is not less than 1500mg/m3, simultaneously in battalion
Adding inorganic nutritive element in nutrient solution groove, the proportioning of inorganic nutritive element is: NH4Cl 800mg/L, Na2HPO4200mg/L,
KH2PO4400mg/L, MgSO4·7H2O 340mg/L, FeSO4·7H2O 10mg/L, CaCl215mg/L, ZnSO4·7H2O0.5
Mg/L, Na2MoO4·2H2O 0.5 mg/L。
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Cited By (5)
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| CN106495313A (en) * | 2016-11-29 | 2017-03-15 | 南京大学 | A kind of device and method for improving wastewater treatment biomembrane biofilm efficiency |
| CN106591180A (en) * | 2016-12-05 | 2017-04-26 | 盐城工学院 | Efficient chlorobenzene degradation obligate bacterium, composite microbial agent and preparation method and application of composite microbial agent |
| CN106914113A (en) * | 2017-03-06 | 2017-07-04 | 常州大学 | A kind of chlorobenzene exhaust-gas treatment tank |
| CN107096374A (en) * | 2017-05-12 | 2017-08-29 | 南京科技职业学院 | A kind of method that enhanced biological drop filter tower handles toluene waste gas |
| CN110813076A (en) * | 2019-10-11 | 2020-02-21 | 广东省南方环保生物科技有限公司 | Organic waste gas biological treatment method and device |
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| CN106914113A (en) * | 2017-03-06 | 2017-07-04 | 常州大学 | A kind of chlorobenzene exhaust-gas treatment tank |
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Effective date of registration: 20191216 Address after: 224051 innovation center, environmental protection Avenue, environmental protection science and Technology City, Yancheng City, Jiangsu Province Patentee after: Kunyue Internet Environmental Technology (Jiangsu) Co.,Ltd. Address before: 224051 No. 9 Yingbin Road, Jiangsu, Yancheng City Patentee before: YANCHENG INSTITUTE OF TECHNOLOGY |
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Address after: 224051 Innovation Center of Environmental Protection Avenue, Environmental Protection Technopole, Yancheng City, Jiangsu Province Patentee after: Jiangsu Kunlun Internet Technology Co.,Ltd. Address before: 224051 Innovation Center of Environmental Protection Avenue, Environmental Protection Technopole, Yancheng City, Jiangsu Province Patentee before: Kunyue Internet Environmental Technology (Jiangsu) Co.,Ltd. |