CN109893992A - A kind of biological treatment device purifying formaldehyde in air - Google Patents
A kind of biological treatment device purifying formaldehyde in air Download PDFInfo
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- CN109893992A CN109893992A CN201910209434.5A CN201910209434A CN109893992A CN 109893992 A CN109893992 A CN 109893992A CN 201910209434 A CN201910209434 A CN 201910209434A CN 109893992 A CN109893992 A CN 109893992A
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000000746 purification Methods 0.000 claims abstract description 19
- 238000006065 biodegradation reaction Methods 0.000 claims abstract description 10
- 238000006731 degradation reaction Methods 0.000 claims abstract description 7
- 244000005700 microbiome Species 0.000 claims abstract description 5
- 239000003792 electrolyte Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000002068 microbial inoculum Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 8
- 230000001580 bacterial effect Effects 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000007836 KH2PO4 Substances 0.000 claims description 4
- 241000589350 Methylobacter Species 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 229930040373 Paraformaldehyde Natural products 0.000 abstract description 5
- 229920002866 paraformaldehyde Polymers 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 4
- 239000013618 particulate matter Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000012356 Product development Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 25
- 239000007789 gas Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000002609 medium Substances 0.000 description 9
- 230000009102 absorption Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910052564 epsomite Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 206010021703 Indifference Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009629 microbiological culture Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The present invention provides the biological treatment devices that one kind can purify formaldehyde in air, are connected and composed by circulation gas-liquid exchange system and bio-degradation reactions room by pipeline, by the purified treatment for completing PARA FORMALDEHYDE PRILLS(91,95) using formaldehyde as the degradation of the microorganism of sole carbon source.Present apparatus safety is good, operating cost is low, can also purify to the particulate matter in air while effective purifying formaldehyde, and has humidification, it is the biological treatment device of effective purification formaldehyde in air, is of great significance to the product development in biological cleaning field.
Description
Technical field
The present invention relates to biological cleaning field, specially a kind of biological treatment device for purifying formaldehyde in air.
Background technique
Formaldehyde can make protein denaturation, have carcinogenic, teratogenesis, disabling effect, and the exceeded influence human body of formaldehyde in air is strong
Health, formaldehyde in indoor air has no the mode of being effectively treated at present.
Mainstream processing method has 2 kinds at present, the first: adsorption method.Absorption method is divided into nature absorption again and forces absorption,
Wherein natural adsorption method refers to furnishes adsorbing medium indoors, is contacted, is realized with adsorbing medium by the natural flowing of air
The suction-operated of limited efficacy.This method almost to exceeded formaldehyde without effect or its act on it is small can be ignored, main cause is
Air flowing is limited, and adsorbing medium is small to the exposure of air, and contact area is small, so that the contact probability of formaldehyde and active carbon is very
It is small.Shallow-layer contact may be repelled by the zone of saturation of activated carbon surface, not can be carried out sufficient adsorption reaction.Therefore it inhales naturally
The formaldehyde removal effect of attached method is very limited.Passive adsorption refers to that entering the formaldehyde in air by force ventilated mode fills
The adsorbing medium room of full active carbon, air can carry out more complete contact with active carbon here, and adsorbing medium is to air
It is filtered, the organic molecules such as formaldehyde in air is adsorbed.The shortcomings that the method is the suction-operated meeting of adsorbing medium
Saturation is generated, the adsorbing medium after saturation cannot not only continue formaldehyde adsorption, but also can be formed dirty to release formaldehyde in air
Dye source, causes secondary pollution, and need to regularly replace adsorbing medium can just carry out, therefore very big to adsorbing medium demand, improves
Cost, forms the very big wasting of resources.
Second: oxidation removal method.This method basic principle is method for oxidation, mainly includes catalysis oxidation, plasma oxygen
The methods of change, high-temp combustion oxidizing process, ozone oxidation.High-temp combustion oxidizing process: using electric energy or burning heat production, by all gas
Component indifference is heated to 800 DEG C or more, makes oxygen and formaldehyde in air that redox reaction occur, generates H2O and CO2.But
This method highly energy-consuming, equipment cost is high, has an impact to indoor air temperature, is not suitable for practical application substantially.Plasma oxidation
Method: using the principle of high voltage gas discharge, carrying out plasma for all constituent of air indifferences, the formaldehyde of plasma with
Redox reaction occurs for oxygen, generates H2O and CO2.This method also needs to expend a large amount of electric energy, there is high-voltage safety hidden danger,
The non-specific removal of PARA FORMALDEHYDE PRILLS(91,95), needs biggish occupied area and bulky equipment volume, is not suitable for practical application；It is catalyzed oxygen
Change removal method such as photocatalyst to aoxidize, ultraviolet light is needed to irradiate TiO2Coating, response area is limited, and oxidation efficiency is low, generates ultraviolet light
Pollution, practical value are little；Ozonation generates the ozone PARA FORMALDEHYDE PRILLS(91,95) gas molecule that generator produces using ozone and carries out
Oxidation, ozone generates generator itself because needing the extreme conditions such as high-voltage electricity or ultraviolet light, thus has some potential safety problems,
Secondly extra pernicious gas O can be generated3, secondary pollution is generated, almost without practical value.
Summary of the invention
The purpose of the present invention one is to provide one kind and overcomes the shortage of prior art, and proposes a kind of biology for purifying formaldehyde in air
Processing unit.
The biological treatment device of purification formaldehyde in air provided by the invention is by circulation gas-liquid exchange system and biodegrade
Reaction chamber is connected and composed by pipeline, and particular content is as follows:
Circulation gas-liquid exchange system is a gas-liquid switch room, and gas-liquid is provided with air inlet and exhaust outlet in switch room, passes through gas
Air containing formaldehyde is squeezed into gas-liquid switch room by air inlet by pump, by with the circular electrolyte inside gas-liquid switch room
It comes into full contact with, the formaldehyde in air is dissolved in electrolyte, residual gas is discharged by exhaust outlet；Gas-liquid switch room is also set up
There are water inlet and liquid outlet, the electrolyte in switch room realizes circulating in the present apparatus by water pump, and electrolyte passes through
Water pump squeezes from water inlet and flows into gas-liquid switch room, comes into full contact with air and completes to become formalin after formaldehyde exchanges, from out
The discharge of liquid mouth.
Bio-degradation reactions are provided with inlet and water outlet on room, are connected respectively at liquid outlet with water inlet by pipeline
It connects.Bio-degradation reactions chamber interior is divided into 2 layers up and down by the semi-permeable membrane partition of 1-4 micron pore size, and upper layer is containing of circulating
Formalin, the small molecules such as electrolyte, water, formaldehyde in the solution persistently penetrate 1-4 micron pore size semi-permeable membrane and lower layer dissolves
It swaps.The microbial inoculum with formaldehyde for the growth of unique source C is placed in lower layer's compartment.
Preferably, the core bacterial strain of the microbial inoculum used in the biological treatment device of purification formaldehyde in air described in invention
For one plant of Methylobacter bacteriumMethylobacterium podariumJQ-1(hereinafter referred to as JQ-1), JQ-1 bacterial strain is in
The deposit number of state's Microbiological Culture Collection administration committee common micro-organisms center is CGMCC No. 17229.
Preferably, it is of the present invention purification formaldehyde in air biological treatment device in gas-liquid switch room in setting
One circulation water spray exchanger.Using water pump as motive power outputting apparatus, pressure is subject to electrolyte, pressure makes electrolyte logical
Spray head is crossed to be sprayed in gas-liquid switch room.Meanwhile room air is flowed into gas-liquid switch room by forced ventilation equipment.In gas-liquid
In switch room, spray forms half gaseous electrolyte and comes into full contact with air, by the absorptions such as formaldehyde, particulate matter in air transfer
Into in electrolyte, formalin is formed, completes formaldehyde by the mass transport process of gas to liquid.
Preferably, the biological treatment device electrolyte solution formula of purification formaldehyde in air of the present invention is as follows:
Na2PO4·7H2O 6 g/L, KH2PO43.0 g/L, Nacl 0.5 g/L, NH4Cl 1.0 g/L, MgSO4·7H2O 0.1 g/
L, CaCl2 0.1g/L。
Preferably, it is of the present invention purification formaldehyde in air biological treatment device in bio-degradation reactions room in
Electrolyte 22-35 DEG C of temperature is kept by temperature controller.
Preferably, the biological treatment device of purification formaldehyde in air of the present invention can purify in air
PM2.5。
Preferably, the biological treatment device of purification formaldehyde in air of the present invention has humidification to air.
Microbial inoculum used in the biological treatment device of heretofore described purification formaldehyde in air can be with degradation of formaldehyde, to height
Formaldehyde in the solution of concentration carries out assimilation, assigns formaldehyde as " food " (substrate) of microorganism, original in transformation formaldehyde
Chemical structure while, convert it into as a part of thallus itself, to be that formaldehyde is made to be degraded and be removed.This life
Object processing unit is by electrolyte and coming into full contact with containing formaldehyde air, the first formaldehyde in preliminary removing air, recycling with
Formaldehyde is that the microbial strains in unique source C realize the efficient degradation to the formaldehyde being dissolved in electrolyte.Using micron order semi-permeable membrane
Effect have two: first, for microbial inoculum provide space isolation, be secured in lower layer space, do not taken away by circular electrolyte.Its
Two, in electrolyte formaldehyde and electrolyte exchange hole is provided, make to be purified containing formalin, formaldehyde is removed.Pass through
The exchange of electrolyte that the clean electrolyte without formaldehyde after microbial degradation continues and formaldehyde is contained on upper layer, in cycles,
Electrolyte after removal formaldehyde is pumped into electrolyte circulation next time by the pump housing.To which room air continues and present apparatus Inner electrolysis
Liquid carries out contact exchange, and the formaldehyde in circular electrolyte is persistently removed, and the formaldehyde in air is continuously obtained removal.
Using circular electrolyte first is that can have inside the biological treatment device of purification formaldehyde in air provided by the invention
Effect improves the solubility of aldehyde, increases the absorption efficiency of PARA FORMALDEHYDE PRILLS(91,95), second is that electrolyte therein is the growth of the microorganism of next step
Nutrient is provided with culture and maintains the function of osmotic pressure, to guarantee the vigor and number of viable of strain, to further increase first
Aldehyde removal efficiency and save the cost.The indoor temperature control system of bio-degradation reactions is also for guarantee Strain survival and maintains bacterial strain
Degradation Formaldehyde rate and be arranged, 22-35 DEG C of temperature range, only room temperature be lower than this range when can just open, energy-saving safe.
The biological treatment device of purification formaldehyde in air provided by the invention does not need high temperature high pressure device, therefore device is pacified
Full property is very good.Equipment running status is normal temperature and pressure, therefore operating cost is very low.Biomass microbial inoculum is in normal temperature and pressure
Can have bioactivity, permanently effective, long-term preservation, because not needing without special consumptive material in electrolyte environment for a long time
Special maintenance.The present apparatus utilize electrolyte and air exchange process, while the absorption for realizing PARA FORMALDEHYDE PRILLS(91,95), also absorb and
The particulate matter in some air has been dissolved, more preferably air purification effect is formed.While gas-liquid exchange, part is also formed
The evolution of high-moisture air forms air wetting effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1.
In figure, 1 is biological respinse room, and 2 be gas-liquid switch room, and 3 be air inlet, and 4 be exhaust outlet, and 5 be air pump, and 6 be into water
Mouthful, 7 be liquid outlet, and 8 be inlet, and 9 be water outlet, and 10 be semi-permeable membrane, and 11 be water pump, and 12 be pipeline, and 13 be temperature controller, and 14 are
Spray exchanger.
Specific embodiment
Below with reference to specific implementation example, the present invention is described in detail.Following embodiment facilitates the skill in this field
Art personnel further understand the present invention, but the invention is not limited in any way.
Bacterial strain used in following embodiments is Methylobacter bacteriumMethylobacterium podarium JQ-1
(hereinafter referred to as JQ-1), deposit number of the JQ-1 bacterial strain in China Committee for Culture Collection of Microorganisms's common micro-organisms center
For CGMCC No. 17229.
Material as used in the following examples, reagent etc., are commercially available unless otherwise specified.
Culture medium as used in the following examples is as follows:
Formaldehyde culture medium: formaldehyde 50mg/L, NH4Cl 0.5g/L、Na2HPO4 3.0g/L、KH2PO4 1.5g/L、MgSO4·7H2O
0.1g/L、1M CaCl2 0.1g/L。
Microbial inoculum used in following embodiments the preparation method is as follows: JQ-1 according to 3-5% inoculum concentration access formaldehyde culture medium
In, 30 DEG C of sudden and violent gas or shaking table 200r/min culture, when cell concentration reaches fermentation ends when OD600 value is 1.5 or so, fermentation liquid
For liquid bacterial agent.
Electrolyte prescription used in following embodiments is as follows: Na2PO4·7H2O 6 g/L, KH2PO43.0 g/L, Nacl
0.5 g/L, NH4Cl 1.0 g/L, MgSO4·7H2O 0.1 g/L, CaCl2 0.1g/L。
Embodiment 1
It is as shown in Figure 1 a kind of biological treatment device for purifying formaldehyde in air.The present apparatus by by circulation gas-liquid exchange system and
Bio-degradation reactions room 1 is connected and composed by pipeline 12, and particular content is as follows:
Circulation gas-liquid exchange system is a gas-liquid switch room 2, is provided with air inlet 3 and exhaust outlet 4 in gas-liquid switch room 2, is led to
It crosses air pump 5 and the air containing formaldehyde is squeezed into gas-liquid switch room 2 by air inlet 3, gas-liquid switch room 2 is additionally provided with water inlet
6 and liquid outlet 7, there is electrolyte in gas-liquid switch room 2, electrolyte is circulated by the realization of water pump 11, squeezed by water pump 11
Enter circulation water spray exchanger 14 from water inlet 6, electrolyte is sprayed in gas-liquid switch room 2 by spray head, and spray forms half gas
State shape comes into full contact with air, and the absorptions such as formaldehyde, particulate matter in air are transferred into electrolyte, forms formalin,
Residual gas is discharged by exhaust outlet 4；Formalin is discharged from liquid outlet 7.
Inlet 8 and water outlet 9 are provided on bio-degradation reactions room 1, by pipeline 12 respectively at liquid outlet 7 and water inlet
Mouth 6 is connected.Upper layer and lower layer are divided by the partition of semi-permeable membrane 10 of 1-4 micron pore size inside bio-degradation reactions room 1, upper layer is to follow
What circulation moved contains formalin, and the small molecules such as electrolyte, water, formaldehyde in the solution persistently penetrate 1-4 micron pore size semi-permeable membrane
10 swap with lower layer solution.It is placed with Methylobacter bacterium JQ-1 microbial inoculum and temperature controller 13 in lower layer's compartment, can incite somebody to action
Temperature in the present apparatus is maintained at 22-35 DEG C.
Embodiment 2
Using biological treatment device described in embodiment 1 as cleaning equipment, the removal effect of formaldehyde in air is detected.It is closed
The aseptic experiment room finished of just constructing, room area 10m are selected between Institute of Biology, Gansu Academy of Sciences one in space2, room height
3m, volume are about 30m3, sterile room interior trim is using certain resin material, and forms are using the closed forms of double thermal insulation, crack between a door and its frame
Air-tightness is more tight.It tests before starting for 24 hours, by the closed processes such as all door and windows and any pipeline communicated with the outside world.
Experiment first samples indoor gas after starting.The method of sampling uses national standard " Indoor Air Quality standards
GBT 18883-2002 " method.Desinfection chamber is close to regular cube shape, indoors at wall 1m, is arranged at height 1.2m
Sampled point is sampled.Gas sampling type number are as follows: NTC-805.Sampling flow setting are as follows: 333.3ml/min, sampling time
Are as follows: 30min.Sampling volume are as follows: 10L.
Sample acquisition first is carried out to original room air, is denoted as 0h sample.Then again with purification air described in embodiment 1
The biological treatment device of middle formaldehyde carries out purified treatment to the room air.In this treatment process, room temperature be 25 DEG C, test into
30min booting is preheated before row.Recirculated water flow velocity is 30ml/min, and air velocity is set as 100L/min.Purified treatment mistake
Sampling time point in journey is 0.5h, 1h, 2h.Totally 4 air samples, sample successively mark are as follows: 0h-a, 0.5h-a, 1h-a,
2h-a.The indoor recirculated water of biodegrade in device is sampled while carrying out air sample acquisition every time, using volume
For 10ml.Sample number is successively denoted as: 0h-w, 0.5h-w, 1h-w, 2h-w.
To 0h-a, 0.5h-a, 1h-a, 2h-a, 0h-w, 0.5h-w, 1h-w, 2h-w, totally 8 samples carry out concentration of formaldehyde survey
Fixed and calculating.The measurement of the concentration of formaldehyde of the liquid sample uses " the measurement acetylacetone,2,4-pentanedione spectrophotometry of air quality formaldehyde
GB/T15516-1995 " method.Experimental result see the table below:
1. Indoor Air Formaldehyde processing result of table
| Time point | 0h | 0.5h | 1h | 2h |
| Air sample (mg/m3) | 0.129 | 0.083 | 0.075 | 0.045 |
| It recycles water sample (mg/L) | 0.00 | 0.36 | 0.25 | 0.24 |
According to list data it is found that the biological treatment device of purification formaldehyde in air provided by the invention can surpass indoor formaldehyde
Mark 0.1 mg/m3Air (30m3) reach international Indoor Air Quality standards in 0.5h, and due to the strong degradation of microbial inoculum
Effect is avoided and is drenched by molten so that the content of formaldehyde absorbed in the liquid of formaldehyde keeps extremely low concentration level run
The evolution again of formaldehyde.
Embodiment 3
Purified treatment mode and experiment place with embodiment 4, in 0h, 0.5h, 1h, 2h while purified treatment, using laser
Formula pm2.5 detector carries out PM2.5 detection to laboratory central part position, and the experimental results are shown inthe following table:
2. room air PM2.5 processing result of table
| Time point | 0h | 0.5h | 1h | 2h |
| pm2.5 | 30 | 14 | 8 | 7 |
According to list data it is found that this patent method can be by room air (30m3) pm2.5 value 30 be down in 0.5h
14.And with the extension of time, numerical value further in 2h near 7.It is good to prove that the present apparatus has the pm2.5 in air
Leaching.
Claims (8)
1. a kind of biological treatment device for purifying formaldehyde in air, it is characterised in that the present apparatus is by circulation gas-liquid exchange system and life
Object degradation reaction room (1) is connected and composed by pipeline (12), in which:
(1) the circulation gas-liquid exchange system is a gas-liquid switch room (2), is provided with air inlet (3) on gas-liquid switch room (2)
With exhaust outlet (4), air pump (5) are installed on air inlet (3) Outer Tube (12), gas-liquid switch room (2) be additionally provided with water inlet (6) and
Liquid outlet (7), the electrolyte in gas-liquid switch room (2) pass through outer water pump (11) circulating in the present apparatus；
(2) it is provided with inlet (8) and water outlet (9) on the bio-degradation reactions room (1), by pipeline (12) respectively at out
Liquid mouth (7) is connected with water inlet (6).
2. bio-degradation reactions room (1) is internal to be divided into 2 floor up and down by semi-permeable membrane (10) partition of 1-4 micron pore size, upper layer is to follow
The dynamic microbial inoculum for containing formalin, being placed with formaldehyde for the growth of unique source C in lower layer's compartment of circulation.
3. the biological treatment device of purification formaldehyde in air according to claim 1, it is characterised in that the biodegrade
The core bacterial strain of the microbial inoculum used in reaction chamber (1) lower layer is one plant of Methylobacter bacteriumMethylobacterium podariumJQ-1 is CGMCC in the deposit number of China Committee for Culture Collection of Microorganisms's common micro-organisms center
No. 17229。
4. the biological treatment device of purification formaldehyde in air according to claim 1, it is characterised in that the gas-liquid exchange
One spray exchanger (14) of setting in room (2).
5. the biological treatment device of purification formaldehyde in air according to claim 1, it is characterised in that the electrolyte is molten
The formula of liquid are as follows: Na2PO4·7H2O 6 g/L, KH2PO43.0 g/L, Nacl 0.5 g/L, NH4Cl 1.0 g/L, MgSO4·
7H2O 0.1 g/L, CaCl2 0.1g/L。
6. the biological treatment device of purification formaldehyde in air according to claim 1, it is characterised in that the biological treatment
Device can purify the PM2.5 in air.
7. the biological treatment device of purification formaldehyde in air according to claim 1, it is characterised in that the biodegrade
Temperature controller (13) are set in reaction chamber (1).
8. the biological treatment device of purification formaldehyde in air according to claim 7, it is characterised in that the temperature controller
(13) temperature of electrolyte is maintained 22-35 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910209434.5A CN109893992A (en) | 2019-03-19 | 2019-03-19 | A kind of biological treatment device purifying formaldehyde in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN113398735A (en) * | 2021-05-07 | 2021-09-17 | 宿州市中东木业有限公司 | Formaldehyde treatment equipment for LVL (laminated veneer lumber) batten production workshop |
| CN115301074A (en) * | 2022-08-05 | 2022-11-08 | 广东省南方环保生物科技有限公司 | VOCs degrading microbial inoculum enrichment fermentation production device and production process |
| CN116328462A (en) * | 2023-05-23 | 2023-06-27 | 中铁十九局集团第六工程有限公司 | Cleaning equipment for highway subgrade construction |
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