CN108339393B - Filler and bacteria bed for waste bio-treatment - Google Patents
Filler and bacteria bed for waste bio-treatment Download PDFInfo
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- CN108339393B CN108339393B CN201810151510.7A CN201810151510A CN108339393B CN 108339393 B CN108339393 B CN 108339393B CN 201810151510 A CN201810151510 A CN 201810151510A CN 108339393 B CN108339393 B CN 108339393B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
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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
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention relates to waste gas purification fields, and in particular to a kind of filler and bacteria bed for waste bio-treatment.Provided by the present invention for the filler of waste bio-treatment, it is made of the raw material comprising volume ratio by the volcanic rock particle of 0.7-1.3:0.7-1.3:0.4-0.6, wooden unit and raw shell.Using bacteria bed made of filler of the invention, strong shock resistance, high temperature high voltage resistant, acid and alkali-resistance, porosity is high, and large specific surface area, compared with existing filler, exhaust treatment efficiency can be improved 10% or more；The pressure drop of packing layer will not generate significant changes after continuous processing exhaust gas 1 year, and the pH of packing layer and diffusate maintains 6.5~7.5 always.
Description
Technical field
The present invention relates to waste gas purification fields, and in particular to a kind of filler and bacteria bed for waste bio-treatment.
Background technique
With gradually increasing for people's environmental consciousness, air pollution control is paid more and more attention.Purification biotechnology is mesh
One of preceding common method, especially to low concentration, atm number organic exhaust gas.The influence factor of biological filter system includes reaction
Device, filler, strain, operating condition etc., wherein filler is both the carrier and gas-liquid mass transfer of attached growth of microorganisms
Medium, physical structure and physicochemical property directly affect the metabolism and growth of microorganism in system.In biofiltration technique,
Ideal filler should have that large specific surface area, filtration resistance are small, be suitble to microorganism attachment, intensity is big, chemical property is stable, cost
Low advantage.Packing material size is smaller, and specific surface area is bigger.But partial size is too small, causes filler accumulation excessively closely knit, fluid, which flows through, to be filled out
Expect that resistance is larger when surface, energy consumption increases therewith.
Biologic packing material can be divided into natural organic filler and inert inorganic filler two major classes.Natural organic filler have compost,
Sawdust, bamboo charcoal, bagasse, cocoanut fiber, bark and corncob etc. be natural or filler after artificial proper treatment.It is this kind of
Fill source is extensive, cheap, has preferable retentiveness, containing higher organic matter, but mechanical strength is not high, is easy to draw
Bed body compacting is played, larger pressure drop is generated, the purifying property of packed tower is caused to decline, needs replacement in 3~5 years primary, is difficult to regenerate.Often
The inorganic filler seen includes active carbon, lava stone, zeolite, perlite, vermiculite, haydite etc..The stability of this kind of filler is good, mechanical
Intensity is high, but density is larger, and cannot provide nutriment to microorganism.What application was more at present is compound filler, by several
Different fillers by a certain percentage and arrangement mode, are formed by simple physical mixed, can make up lacking for one-component filler
It falls into, gives full play to the advantage of each filler.
The selection of filler not only influences its clean-up effect to pollutant, is also related to the stabilization of entire biological treatment system
Property and economy.Therefore, it is necessary to develop new waste gas processing biologic packing material, the purification efficiency and system fortune of pollutant are improved
Capable stability.
Summary of the invention
In order to solve the problems, such as that existing bacteria bed exhaust treatment efficiency is low, the present invention provides a kind of for exhaust gas biology
The filler and bacteria bed of processing can be realized the pollution-free, inexpensive of high-concentration waste gas, high efficiency processing.
The claimed technical solution of the present invention is as follows:
Filler for waste bio-treatment, which is characterized in that by being 0.7-1.3:0.7-1.3:0.4- comprising volume ratio
The raw material of 0.6 volcanic rock particle, wooden unit and raw shell is made.
Preferably, the volume ratio of the volcanic rock particle, wooden unit and raw shell is 1:1:0.5.
Preferably, the partial size of the volcanic rock particle is 10~20mm, and the partial size of the wooden unit is 8~16cm, the life
The partial size of shell is 5~8cm.
Preferably, the preparation method of the volcanic rock particle includes: pickling to be carried out in weak acid solution, then washed with clear water
Only, natural air drying；Then alkali cleaning is carried out in weak caustic solution, then is cleaned with clear water, natural air drying；It is finally stifling with high steam
Volcanic rock removes volcanic rock salts substances remained on surface, the volcanic rock particle that screening partial size is 10~20mm；
The preparation method of the wooden unit includes: to carry out machinery to wooden unit to smash, and chooses the wooden unit that partial size is 8~16cm, uses
High pressure rushes rifle impact, improves structure porosity to 60-75%；
The preparation method of the raw shell includes: to clean raw shell with clear water, is smashed after drying, and selection partial size is 5~8cm
Life shell；
The volcanic rock particle prepared, wooden unit and raw shell are obtained into filler after mixing.
Preferably, in the preparation method of the volcanic rock particle, the weak acid is the nitric acid or sulfuric acid solution of pH4-6, acid
Washing the time is 3-5 minutes；The weak base is the sodium hydroxide or potassium hydroxide solution of pH8-10, and the alkali cleaning time is 3-5 minutes；Institute
Stifling refer to of high steam is stated to fumigate volcanic rock 2-3 minutes in the steam of 5M-10M pa；
In the preparation method of the wooden unit, the high pressure is rushed described in the hydraulic pressure impact that rifle impact refers to using 350M-400M pa
Wooden unit 5-10 seconds.
Preferably, in the preparation method of the volcanic rock particle, the weak acid is the sulfuric acid solution of pH4, pickling time 5
Minute；The weak base is the potassium hydroxide solution of pH10, and the alkali cleaning time is 5 minutes；The high steam is stifling to be referred in 10M pa
It is fumigated in steam volcanic rock 3 minutes；
In the preparation method of the wooden unit, the high pressure rushes rifle and impacts the hydraulic pressure impact wooden unit 10 referred to using 400M pa
Second.
A kind of bacteria bed for exhaust-gas treatment, which is characterized in that be used for waste bio-treatment described in use is any
Filler be made.
The preparation method of the bacteria bed for exhaust-gas treatment, which comprises the steps of: will be any
The filler for waste bio-treatment is packed into bacteria bed region case after mixing, then will be used for exhaust-gas treatment
Bacterium solution spray is in filler surface, until forming microbial film.
A kind of biological treatment device for exhaust gas, which is characterized in that include any filler for waste bio-treatment
Or the bacteria bed for exhaust-gas treatment.
Any described filler for waste bio-treatment or the described bacteria bed or described for exhaust-gas treatment
Application of the biological treatment device for exhaust gas in exhaust-gas treatment.
Preferably, the exhaust gas includes benzene, toluene, ethylbenzene, hydrogen sulfide, carbon disulfide and/or ammonia.
Inventor has found by long-term research, comprising filling out made of raw material with raw shell of volcanic rock particle, wooden unit
Material can be improved exhaust treatment efficiency, and the volume ratio of the volcanic rock particle, wooden unit and raw shell is 0.7-1.3:0.7-1.3:
0.4-0.6.The porosity of volcanic rock particle is high, and large specific surface area is capable of increasing the contact area of exhaust gas and biomembrane；It is flourishing
Hole make to form anaerobic environment inside filtrate, be able to maintain anaerobic bacteria flora also more strongly active, while handling multiple pollutant；With
Common filler haydite is compared, and volcanic rock is also used as the microelement source of biomembrane, improves microbial activity.Wooden unit is
Biomembrane provides carbon source, preferably pine wooden unit.Raw shell is rich in calcium carbonate, can not only be used for biofilm carrier, and nitrification is instead
The alkalinity source answered, is during exhaust gas treatment finely adjusted the pH of biomembrane, and pH is maintained 6.5~7.5 always, makes to give up
Gas disposal flora remains high activity.
In a preferred embodiment, volcanic rock particle activates volcanic rock through overpickling, alkali cleaning, high temperature and high pressure sequential processes
Internal component improves its intensity, prevents from occurring the phenomenon that volcanic rock crushing in use process and influencing exhaust-gas treatment effect；Wooden unit
It is crushed in such a way that machinery is smashed, rushes rifle impact using high pressure, improve porosity, increase specific surface area.Wherein, sour
Washing can be using mono-acid or Compound-acid, and the weak acid for pickling is preferably sulfuric acid, is also possible to nitric acid.Weak base for alkali cleaning is excellent
It is selected as potassium hydroxide, is also possible to sodium hydroxide.Treated filling intensity is high, strong shock resistance, and high temperature high voltage resistant is resistance to
Soda acid, porosity is high, and large specific surface area, compared with untreated filler, exhaust treatment efficiency can be improved 8%.Of the invention
For filler compared with existing filler, exhaust treatment efficiency can be improved 10% or more.
Using bacteria bed made of filler of the invention, strong shock resistance, high temperature high voltage resistant, acid and alkali-resistance, porosity
Height, exhaust treatment efficiency are up to 99% or more (treatment effeciency=(detect entrance detected value-pollutant outlet of pollutant
Value)/pollutant entrance detected value), also, the pressure drop of packing layer will not generate significant change after continuous processing exhaust gas 1 year
Change, the pH of packing layer and diffusate maintains 6.5~7.5 always.
When preparing bacteria bed, bacteria bed region case is packed into after filler of the invention is mixed well, without compressing, so
The bacterium solution for being used for exhaust-gas treatment is sprayed in filler surface to form microbial film afterwards.The bacterium solution for exhaust-gas treatment refers to
Can degrade the bacterium solution of pollutant (for example, benzene, toluene, ethylbenzene, hydrogen sulfide, carbon disulfide and/or ammonia) in exhaust gas.This field skill
The groups of contaminants for the exhaust gas that art personnel are handled according to actual needs is at selecting strain known in the art preparation for exhaust-gas treatment
Bacterium solution, or obtain and (obtain for example, screening from the humus soil near factory) that can degrade volatility from screening in nature
The strain of organic compound, or the strain of known strain and screening acquisition is used in combination.The bacterium solution for exhaust-gas treatment can
To contain only single culture, the flora that multiple strains are constituted also may include.
Detailed description of the invention
The structural schematic diagram of Fig. 1 emission-control equipment；
Wherein, 1- bacteria bed region case, 2- bacteria bed, 3- gas collection pipeline, 4- biological treating equipment case, 5- are pre-
Processing region, 6- humidify spray equipment, 7- exhaust tube.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be described in further detail, it is to be understood that following embodiments are only
As explanation and illustration of the invention and explanation, do not limit the scope of the invention.
Biomaterial
Bifidobacterium Bifidum: it buys from Su Zhoubei Na Chuanlian Bioisystech Co., Ltd, strain number BNCC106791；
Lactic acid bacteria: it buys from Su Zhoubei Na Chuanlian Bioisystech Co., Ltd, strain number BNCC106785；
Actinomyces: it buys from Su Zhoubei Na Chuanlian Bioisystech Co., Ltd, strain number BNCC336944；
Colloid bacillus cereus: it buys from Su Zhoubei Na Chuanlian Bioisystech Co., Ltd, strain number BNCC335819.
Also there is preservation in this laboratory of above-mentioned strain, the Applicant declares that can freely send out to the public in 20 years from the applying date
It puts for necessary confirmatory experiment.It should be understood that realization of the invention is not rely on representated by above-mentioned bacterial strains number
Strain, one or more other strains that Bifidobacterium Bifidum, lactic acid bacteria and actinomyces can choose same Pseudomonas are replaced, colloid
Other bacterial strains that bacillus can choose same strain are replaced, and bacterial strain, which is not used in, provided herein limits guarantor of the invention
Protect range.
Consumptive material
Volcanic rock: Tengchong In Yunnan Province is picked up from；
Wooden unit: the pine of Changbai mountain, Jilin is picked up from；
Raw shell: East Sea coastal area is picked up from；
Haydite: it buys from Yongzhou City, Hunan Province Xiang Yue haydite factory.
In following embodiment, not specified biological chemical reagent is this field conventional reagent, can be according to this field
Conventional method prepare and or it is commercially available, specification be the pure grade in laboratory；Not specified consumptive material is that this field is normal
Consumptive material is advised, finished product can be bought in shop or commission manufacturer is customized.
It is prepared by bacterium solution of the embodiment 1. for exhaust-gas treatment
1. preparing flora
(1) target flora mixture is screened
A. certain chemical plant humus soil sample 10g nearby is acquired, it is mixed with the sterile trade effluent of factory 100ml pH4-7
It is even, it is taken out after 30-45 DEG C, 150r/min shake culture 48h.
B. 10ml culture solution is drawn in superclean bench to be inoculated in 90ml fresh sterile trade effluent, at 30-45 DEG C,
It is taken out after 150r/min shake culture 48h.It repeats aforesaid operations three times, is enriched with the micro- life for the volatile organic compounds that can degrade
Object.
C. the bacterium solution 1ml after enrichment is drawn with Sterile pipette, be put into the test tube for filling 9ml sterile water, concussion is uniform
Afterwards, bacterium solution and other 9ml sterile water mixed diluting after wherein taking 1ml dilution, are so repeated as many times, bacterium solution are diluted to 10-1,
10-2, 10-3, 10-4, 10-5, 10-6The dilution of gradient concentration.Take 10-4, 10-5, 10-6Each 0.2ml of the dilution of three concentration,
It is respectively coated on the agar plate made of sterile trade effluent, after placing 2h at room temperature, 30-45 DEG C of inversion culture.48-
Occur circular protrusions shape petite (diameter 1mm or so) after 72h, on plating medium.Single colonie is provoked with toothpick, is inoculated into
In test tube equipped with the sterile trade effluent of 10ml, gauze sealing culture, until liquid becomes milky turbidity bacterium solution in test tube.Weight
The multiple above operation three times, is isolated and purified repeatedly, obtains target flora mixture.
(2) it is 1:1:1:3 mixing according to mass ratio by Bifidobacterium Bifidum, lactic acid bacteria, actinomyces and colloid bacillus cereus, obtains
Growth-promoting flora.Target flora mixture and growth-promoting flora are mixed according to the mass ratio of 8:1, obtain the bacterium for exhaust-gas treatment
Group.
The growth-promoting flora does not participate in exhaust-gas treatment directly, but can promote the growth and breeding of target flora mixture.
In other embodiments of the present invention, growth-promoting flora can also not contained.
2. domestication culture
(1) prepare culture medium
It prepares nutrient solution: including the following substance of mass volume ratio: 3% starch, 3% glucose, 1% peptone, 0.1%
Magnesium sulfate, 0.1% calcium carbonate, 0.05% potassium dihydrogen phosphate and 0.01 ‰ Zn2+/Mn2+/Cu2+.The nutrient solution can satisfy mesh
Nutriment needed for marking flora mixture and growth-promoting flora growth and breeding.
No. 1 culture medium: it is mixed by nutrient solution and chemical plant sewage by the volume ratio of 5:1；
No. 2 culture mediums: it is mixed by nutrient solution and chemical plant sewage by the volume ratio of 4:1；
No. 3 culture mediums: it is mixed by nutrient solution and chemical plant sewage by the volume ratio of 3:1；
No. 4 culture mediums: it is mixed by nutrient solution and chemical plant sewage by the volume ratio of 2:1；
No. 5 culture mediums: it is mixed by nutrient solution and chemical plant sewage by the volume ratio of 1:1；
No. 6 culture mediums: chemical plant sewage.
By prepared culture medium in 121 DEG C of high-temperature sterilization 15min, it is cooled to room temperature.
(2) flora prepared to step 1 carries out domestication culture, and steps are as follows:
Flora is inoculated into No. 1 culture medium, oxygen is passed through, control the dissolved oxygen concentration of No. 1 culture medium 0.3~
0.8mg/L, pH are 4~8, and temperature is 20~35 DEG C, use low-speed agitator stir culture base, revolving speed 30r/min.Check bacterium
Bacterium solution is inoculated into No. 2 according to the volume ratio of 1:10 after flora growth is stablized (OD600 is 0.4~0.6) by group's growing state
In culture medium, condition of culture is identical as when cultivating in No. 1 culture medium.Aforesaid operations are repeated, No. 3 culture mediums, No. 4 are successively used
Culture medium, No. 5 culture mediums, No. 6 culture mediums carry out domestication culture, and the incubation time in every kind of culture medium is no less than 2 days.Pass through
Concentration of wastewater is gradually increased, nutrition liquid proportional is reduced, sewage is finally made to become the unique nutrient source of flora.Entire domestication process needs
30d or so.
3. prepared by bacterium solution
Use trade effluent and a small amount of glucose, swill mixing as culture medium, wherein trade effluent accounts for culture volume
70%.Prepared culture medium is cooled to room temperature after 121 DEG C of high-temperature sterilization 15min, and the bacterium of domestication is completed in inoculation step 2
Group.The dissolved oxygen concentration for controlling culture medium is 0.4~0.5mg/L, and pH is 6.5~7.5, and temperature is 20~35 DEG C, uses low speed
Blender stir culture base, revolving speed 30r/min.It is cultivated by 5~7d, bacterium solution is in faint yellow half thick liquid, that is, is prepared into
Function.
Performance of the different fillers of embodiment 2. in exhaust-gas treatment compares
1. preparing filler
Using volcanic rock, wooden unit and raw shell as raw material, filler is made as follows.
No. 1 filler
The processing of volcanic rock: pickling 3 minutes in the nitric acid solution of pH6 are cleaned, natural air drying with clear water；Then in pH8
Sodium hydroxide solution in alkali cleaning 3 minutes, then with clear water clean, natural air drying；Fire is finally fumigated in the high steam of 5M pa
Mountain rock 2 minutes, remove volcanic rock salts substances remained on surface, the volcanic rock particle that screening partial size is 10~20mm, porosity
It is 50%.
The processing of wooden unit: machinery is carried out to wooden unit and smashes and (regular can not cut), is sieved after smashing, selection partial size is 8-
16cm, with a thickness of the wooden unit of 3-5cm.Then rifle is rushed using high pressure, is impacted wooden unit 5 seconds with the hydraulic pressure of 350M pa, improve structure hole
Gap rate is to 60%.
The processing of raw shell: raw shell is cleaned with clear water, smashes, is sieved after drying, chooses the raw shellfish that partial size is 5-8cm
Shell.
Obtained volcanic rock particle, wooden unit will be handled to be uniformly mixed with raw shell according to the volume ratio of 0.7:1.3:0.4, obtained
To No. 1 filler.
No. 2 fillers
The processing of volcanic rock: pickling 4 minutes in the nitric acid solution of pH5 are cleaned, natural air drying with clear water；Then in pH9
Sodium hydroxide solution in alkali cleaning 4 minutes, then with clear water clean, natural air drying；Fire is finally fumigated in the high steam of 8M pa
Mountain rock 3 minutes, remove volcanic rock salts substances remained on surface, the volcanic rock particle that screening partial size is 10~20mm, porosity
It is 57%.
The processing of wooden unit: machinery is carried out to wooden unit and smashes and (regular can not cut), is sieved after smashing, selection partial size is 8-
16cm, with a thickness of the wooden unit of 3-5cm.Then rifle is rushed using high pressure, is impacted wooden unit 8 seconds with the hydraulic pressure of 380 pas, improve structure hole
Rate is to 70%.
The processing of raw shell: raw shell is cleaned with clear water, smashes, is sieved after drying, chooses the raw shellfish that partial size is 5-8cm
Shell.
Volcanic rock particle and wooden unit that processing obtains are uniformly mixed with raw shell according to the volume ratio of 1.3:0.7:0.6,
Obtain No. 2 fillers.
No. 3 fillers
The processing of volcanic rock: pickling 5 minutes in the sulfuric acid solution of pH4 are cleaned, natural air drying with clear water；Then exist
Alkali cleaning 5 minutes in the potassium hydroxide solution of pH10, then cleaned with clear water, natural air drying；Finally smoked in the high steam of 10M pa
It steams volcanic rock 3 minutes, removes volcanic rock salts substances remained on surface, the volcanic rock particle that screening partial size is 10~20mm, hole
Gap rate is 60%.
The processing of wooden unit: machinery is carried out to wooden unit and smashes and (regular can not cut), is sieved after smashing, selection partial size is 8-
16cm, with a thickness of the wooden unit of 3-5cm.Then rifle is rushed using high pressure, is impacted wooden unit 10 seconds with the hydraulic pressure of 400M pa, improve structure hole
Gap rate is to 75%.
The processing of raw shell: raw shell is cleaned with clear water, smashes, is sieved after drying, chooses the raw shellfish that partial size is 5-8cm
Shell.
Obtained volcanic rock particle, wooden unit will be handled to be uniformly mixed with raw shell according to the volume ratio of 1:1:0.5, obtain 3
Number filler.
No. 4 fillers
Machinery is carried out with raw shell to volcanic rock, wooden unit respectively to smash, is sieved, and the volcanic rock that partial size is 10~20mm is chosen
Particle, partial size 8-16cm, the wooden unit with a thickness of 3-5cm, partial size are the life shell of 5-8cm.
The volcanic rock particle of screening, wooden unit are uniformly mixed with raw shell according to the volume ratio of 1:1:0.5, No. 4 is obtained and fills out
Material, as a control group.
No. 5 fillers
Using haydite as raw material, filler is prepared in accordance with the following steps: by the hydrogen of the ferric chloride solution of 1.5mol/L and pH10
Potassium oxide solution is sufficiently mixed, and is added haydite and is sufficiently mixed, and then in 400 DEG C of roasting 3h, obtains No. 5 fillers.
2, bio-film colonization
5 kinds of fillers that step 1 is obtained are respectively charged into 5 bacteria bed region casees, without compressing, are uniformly mixed i.e.
It can.It is fitted into the determination method of the packing volume in the case of bacteria bed region: packing volume Am3, exhausted air quantity Bm3/ s (must be by
m3/ h is scaled m3/ s), A/B=C, it is necessary to meet 20s≤C≤30s.The bacterium solution obtained using 1 step 3 of embodiment respectively 1~
No. 5 filler surfaces carry out bio-film colonizations, and steps are as follows: being sprayed at bacterium solution iterative cycles and uniformly by water pump and be previously charged into life
On filler in the case of object filter bed region, by debugging in 5~7 days, filler surface is made to adhere to uniform active biological film.Obtain 1
~No. 5 bacteria beds respectively correspond 1~No. 5 filler.
3, the detection of exhaust treatment efficiency
Exhaust gas to be processed is handled with emission-control equipment shown in FIG. 1.
The emission-control equipment includes gas collection pipeline 3 and biological treating equipment case 4；The biological treating equipment case
4 include the bacteria bed region case 1 that bacteria bed 2 is housed for the pretreated pretreatment zone 5 of exhaust gas and bottom；It is described
Gas collection pipeline 3 and the pretreatment zone 5 are in fluid communication, the pretreatment zone 5 and bacteria bed region case 1
Bottom is in fluid communication；The side wall of the pretreatment zone 5 is equipped with humidification spray equipment 6, will for spraying tap water or middle water
Exhaust gas is adjusted to saturated humidity；The top of bacteria bed region case 1 is equipped with humidification spray equipment 6, is used for bacteria bed 2
Tap water or middle water are sprayed, provides life required moisture for biomembrane；The top of bacteria bed region case 1 is equipped with exhaust tube
7, pass through 2 purified gas of bacteria bed for being discharged.
1~No. 5 bacteria bed obtained with step 2 is respectively handled same a collection of industrial waste gas.It is main in exhaust gas
Pollutant is volatile organic gases (VOC) 2744.35mg/m3, exhausted air quantity 16000m3/ h, 3000 pa of air inlet wind pressure.
Steps are as follows:
Exhaust gas to be processed enters pretreatment zone 5 by gas collection pipeline 3, will using gas-liquid misphase exchange way
Exhaust gas is adjusted to saturated humidity, and after temperature is adjusted to 15~35 DEG C, exhaust gas enters from the bottom of bacteria bed 2, upwardly through life
Object filter bed 2.The top of bacteria bed region case 1 is equipped with humidification spray equipment 6, and with the rate of 4L/d, the frequency of 1min/h is to life
Object filter bed 2 sprays tap water or middle water.Purified gas is discharged through exhaust tube 7, and the pollutant for detecting exhaust tube exit is dense
Degree.
The results are shown in Table 1, the exhaust treatment efficiency highest of No. 3 fillers, up to 99.85%, than the purification efficiency of No. 4 fillers
High by 8.01%, the purification efficiency than No. 5 fillers using existing method preparation is high by 10.24%.
The performance of 1. 1~No. 5 fillers of table compares
Embodiment 3. handles the case of industrial waste gas using filler of the invention
Prepare bacteria bed as follows:
(1) filler is prepared
The processing of volcanic rock: pickling 3-5 minutes in the sulfuric acid solution of pH4-6, then clean, the natural air drying with clear water；So
Afterwards alkali cleaning 3-5 minutes in the potassium hydroxide solution of pH8-10, then clean, the natural air drying with clear water；Finally in 5M-10M pa
It is fumigated volcanic rock 2-3 minutes in high steam, removes volcanic rock salts substances remained on surface, screening partial size is 10~20mm's
Volcanic rock particle.
The processing of wooden unit: machinery is carried out to wooden unit and is smashed, is sieved after smashing, selection partial size is 8-16cm, with a thickness of 3-5cm
Wooden unit.Then rifle is rushed using high pressure, is impacted wooden unit 5-10 seconds with the hydraulic pressure of 350M-400M pa, improve structure porosity to 60-
75%.
The processing of raw shell: raw shell is cleaned with clear water, smashes, is sieved after drying, chooses the raw shellfish that partial size is 5-8cm
Shell.
Volume of the volcanic rock particle, wooden unit that processing is obtained with raw shell according to 0.7-1.3:0.7-1.3:0.4-0.6
Than after mixing, being fitted into the case of bacteria bed region, without compressing.It is fitted into packing volume in the case of bacteria bed region really
Determine method: packing volume Am3, exhausted air quantity Bm3/ s (must be by m3/ h is scaled m3/ s), A/B=C, it is necessary to meet 20s≤C
≤30s。
(2) bio-film colonization
The bacterium solution for being obtained 1 step 3 of embodiment by water pump iterative cycles in reactor, and uniformly it is sprayed at preparatory dress
Enter on the filler in the case of bacteria bed region, by debugging in 5~7 days, so that filler surface is adhered to uniform active biological film, obtain
To bacteria bed.
Case 1
1. process object: Wuhai of Inner Mongolia's Fine Chemical Works exhaust gas, major pollutants are volatile organic gases
(VOC) and benzene class, total exhausted air quantity are 25000m3/h。
2. processing method: exhaust gas to be processed enters pretreatment zone by gas collection pipeline, originally from top spray
Water, using gas-liquid misphase exchange way, by gas regulation to saturated humidity, temperature is adjusted to 30 DEG C or so, and exhaust gas is from biological filter
Bed bottom enters, and upwardly through bacteria bed, the empty bed time is about 25s, and pollutant is used as the energy in the metabolic process of flora
It is decomposed with nutriment, is eventually converted into harmless substance.The top of bacteria bed region case is equipped with humidification spray equipment, with
The frequency of 1min/h sprays tap water to bacteria bed, humidifies for biomembrane, provides flora life required moisture content, daily water consumption
For 5L.Purified gas is discharged through the exhaust tube of bacteria bed region box top.
3. result data
After continuous processing exhaust gas 1 year, the pressure drop of packing layer does not have a significant changes, and the pH of packing layer and diffusate is maintained
6.5~7.5.
Case 2
1. process object: Guizhou synthesizes ammonia plant gas, and major pollutants are volatile organic gases (VOC), vulcanize
Hydrogen, ammonia and carbon disulfide, total exhausted air quantity are 22000m3/h。
2. processing method: exhaust gas to be processed enters pretreatment zone by gas collection pipeline, originally from top spray
Water, using gas-liquid misphase exchange way, by gas regulation to saturated humidity, temperature is adjusted to 30 DEG C or so, and exhaust gas is from biological filter
Bed bottom enters, and upwardly through bacteria bed, the empty bed time is about 25s, and pollutant is used as the energy in the metabolic process of flora
It is decomposed with nutriment, is eventually converted into harmless substance.The top of bacteria bed region case is equipped with humidification spray equipment, with
The frequency of 1min/h sprays tap water to bacteria bed, humidifies for biomembrane, provides flora life required moisture content, daily water consumption
For 4L.Purified gas is discharged through the exhaust tube of bacteria bed region box top.
3. result data
After continuous processing exhaust gas 1 year, the pressure drop of packing layer does not have a significant changes, and the pH of packing layer and diffusate is maintained
6.5~7.5.
Case 3
1. process object: Jiangsu chemical plant sewage disposal system exhaust gas, major pollutants are volatile organic gases
(VOC), hydrogen sulfide, total exhausted air quantity are 15000m3/h。
2. processing method: exhaust gas to be processed enters pretreatment zone by gas collection pipeline, originally from top spray
Water, using gas-liquid misphase exchange way, by gas regulation to saturated humidity, temperature is adjusted to 30 DEG C or so, and exhaust gas is from biological filter
Bed bottom enters, and upwardly through bacteria bed, the empty bed time is about 25s, and pollutant is used as the energy in the metabolic process of flora
It is decomposed with nutriment, is eventually converted into harmless substance.The top of bacteria bed region case is equipped with humidification spray equipment, with
The frequency of 1min/h sprays tap water to bacteria bed, humidifies for biomembrane, provides flora life required moisture content, daily water consumption
For 2.5L.Purified gas is discharged through the exhaust tube of bacteria bed region box top.
3. result data
After continuous processing exhaust gas 1 year, the pressure drop of packing layer does not have a significant changes, and the pH of packing layer and diffusate is maintained
6.5~7.5.
Case 4
1. process object: Hubei chemical plant exhaust gas, major pollutants are volatile organic gases (VOC), hydrogen sulfide, ammonia
Gas and carbon disulfide, total exhausted air quantity are 30000m3/h。
2. processing step: exhaust gas to be processed enters pretreatment zone by gas collection pipeline, originally from top spray
Water, using gas-liquid misphase exchange way, by gas regulation to saturated humidity, temperature is adjusted to 30 DEG C or so, and exhaust gas is from biological filter
Bed bottom enters, and upwardly through bacteria bed, the empty bed time is about 25s, and pollutant is used as the energy in the metabolic process of flora
It is decomposed with nutriment, is eventually converted into harmless substance.The top of bacteria bed region case is equipped with humidification spray equipment, with
The frequency of 1min/h sprays tap water to bacteria bed, humidifies for biomembrane, provides flora life required moisture content, daily water consumption
For 8L.Purified gas is discharged through the exhaust tube of bacteria bed region box top.
3. result data
After continuous processing exhaust gas 1 year, the pressure drop of packing layer does not have a significant changes, and the pH of packing layer and diffusate is maintained
6.5~7.5.
Claims (9)
1. being used for the filler of waste bio-treatment, which is characterized in that by being 0.7-1.3:0.7-1.3:0.4-0.6 comprising volume ratio
Volcanic rock particle, wooden unit and raw shell raw material be made；
The preparation method of the volcanic rock particle includes: pickling to be carried out in weak acid solution, then cleaned with clear water, natural air drying；
Then alkali cleaning is carried out in weak caustic solution, then is cleaned with clear water, natural air drying；Volcanic rock finally is fumigated with high steam, is removed
Volcanic rock salts substances remained on surface, the volcanic rock particle that screening partial size is 10~20mm；
The preparation method of the wooden unit includes: to carry out machinery to wooden unit to smash, and chooses the wooden unit that partial size is 8~16cm, uses high pressure
Rifle impact is rushed, improves structure porosity to 60-75%；
The preparation method of the raw shell includes: to clean raw shell with clear water, is smashed after drying, and the life that partial size is 5~8cm is chosen
Shell；
The volcanic rock particle prepared, wooden unit and raw shell are obtained into filler after mixing.
2. the filler according to claim 1 for waste bio-treatment, which is characterized in that the volcanic rock particle, wood
The volume ratio of block and raw shell is 1:1:0.5.
3. the filler according to claim 1 or 2 for waste bio-treatment, which is characterized in that
In the preparation method of the volcanic rock particle, the weak acid is the nitric acid or sulfuric acid solution of pH4-6, pickling time 3-5
Minute；The weak base is the sodium hydroxide or potassium hydroxide solution of pH8-10, and the alkali cleaning time is 3-5 minutes；The high steam
Stifling refer to is fumigated volcanic rock 2-3 minutes in the steam of 5M-10M pa；
In the preparation method of the wooden unit, the high pressure rushes rifle and impacts the hydraulic pressure impact wooden unit referred to using 350M-400M pa
5-10 seconds.
4. the filler according to claim 3 for waste bio-treatment, which is characterized in that
In the preparation method of the volcanic rock particle, the weak acid is the sulfuric acid solution of pH4, and pickling time is 5 minutes；It is described weak
Alkali is the potassium hydroxide solution of pH10, and the alkali cleaning time is 5 minutes；Stifling refer to of the high steam is fumigated in the steam of 10M pa
Volcanic rock 3 minutes；
In the preparation method of the wooden unit, the high pressure rushes rifle and impacts hydraulic pressure impact the wooden unit 10 seconds referred to using 400M pa.
5. a kind of bacteria bed for exhaust-gas treatment, which is characterized in that any described for giving up using Claims 1 to 4
The filler of gas biological treatment is made.
6. the preparation method described in claim 5 for the bacteria bed of exhaust-gas treatment, which is characterized in that including walking as follows
It is rapid: any filler for being used for waste bio-treatment of Claims 1 to 4 is packed into bacteria bed region after mixing
Then case sprays the bacterium solution for being used for exhaust-gas treatment in filler surface, until forming microbial film.
7. a kind of biological treatment device for exhaust gas, which is characterized in that any described for exhaust gas biology comprising Claims 1 to 4
The bacteria bed of exhaust-gas treatment is used for described in the filler or claim 5 of processing.
8. at exhaust gas described in any filler or claim 5 for waste bio-treatment of Claims 1 to 4
The application of the bacteria bed of reason or biological treatment device for exhaust gas as claimed in claim 7 in exhaust-gas treatment.
9. for giving up described in the filler or claim 5 according to any one of claims 1 to 4 for waste bio-treatment
The bacteria bed of gas disposal or biological treatment device for exhaust gas as claimed in claim 7, which is characterized in that the exhaust gas include benzene,
Toluene, ethylbenzene, hydrogen sulfide, carbon disulfide and/or ammonia.
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| CN201810151510.7A CN108339393B (en) | 2018-02-14 | 2018-02-14 | Filler and bacteria bed for waste bio-treatment |
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| CN101462790B (en) * | 2009-01-12 | 2011-06-22 | 苏州嘉净环保科技股份有限公司 | Modified bio-filter stuffing |
| CN106362581A (en) * | 2016-08-31 | 2017-02-01 | 北京北林绿源生态技术研究院有限责任公司 | Biofilter packing composition |
| CN107021561A (en) * | 2017-04-07 | 2017-08-08 | 上海野马环保设备工程有限公司 | A kind of biological deodorizing filler for possessing physics, chemistry and bio-cooperation |
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