CN109340942A - A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants - Google Patents
A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants Download PDFInfo
- Publication number
- CN109340942A CN109340942A CN201811145750.2A CN201811145750A CN109340942A CN 109340942 A CN109340942 A CN 109340942A CN 201811145750 A CN201811145750 A CN 201811145750A CN 109340942 A CN109340942 A CN 109340942A
- Authority
- CN
- China
- Prior art keywords
- water
- air
- added
- beaker
- filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- 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
- B01D53/007—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 by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- 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 invention discloses a kind of use for laboratory indoor air cleaners for having both waste utilization and Disposal of Contaminants, the air cleaning unit main body is upper and lower double-layer seal shell, the closed shell mutual conduction of upper layer and lower layer, under the action of oxygen increasing pump, air can come into full contact with it when entering from grid through titanium dioxide-carbon layer and complete light-catalyzed reaction；In lower layer's treatment process, air enters the shell for filling water and multiple filling layers through aeration head, and air is diffused up in the form of bubble from bottom under the action of aeration, passage in transit packing layer, and gas can come into full contact with and react with filler.In air purifier of the present apparatus using filler removal PM2.5, in the way of titanium dioxide-carbon and the coefficient photocatalyst effect advanced oxidation of ultraviolet radiator, while decomposing organic matter, kills bacterial virus, removes stink.And sludge media bio-film colonization technology is the largest innovative point, can use microorganism and to purify air indirectly to the intake of pollutant in water body.
Description
Technical field
The invention belongs to field of environment protection equipment, it is related in a kind of use for laboratory room for having both waste utilization and Disposal of Contaminants
Air purifier.
Background technique
Nowadays with frequent mankind's activity, air pollution is got worse, and interior not can avoid yet.Indoor pollution has shadow
Ring range it is big, time of contact is long, pollutant concentration is low, concentration variation greatly, pollutant kind it is more, vulnerable to environmental condition and meteorology because
The features such as element influences, harm is healthy.According to statistics, indoor pollutant concentration is usually above outdoor 2-5 times, in special circumstances also
It is likely to be breached higher.And chemical laboratory is as a special circumstances, indoor pollutant concentration is complicated and changeable.Therefore,
The air pollution problems inherent in laboratory is very important naturally, and study discovery pollutant be broadly divided into three categories: PM10 and
The microorganisms such as the suspended particulate substances such as PM2.5, volatile organic contaminant, bacterial virus.Then, the present invention provides one kind to have both
Waste utilization and Disposal of Contaminants use for laboratory indoor air cleaner.
Summary of the invention
The technical issues of solution: the present invention provides in a kind of use for laboratory room for having both waste utilization and Disposal of Contaminants
Air purifier.
Technical solution: a kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants, the purification
Device is made of the first closed shell and the second closed shell, and the top of the first closed shell right side is equipped with air inlet, it is described into
Port is equipped with grid, and the first closed housing central section is equipped with partition, and the partition divides the first closed housing cavity from top to bottom
Be divided into inlet plenum and discharge chamber, turn left in the inlet plenum from the right side and be successively arranged the first HEPA filter screen, pretreatment net, it is described every
Plate is equipped with so that the opening that inlet plenum be connected to discharge chamber, and is open and is set on the left of pretreatment net；First closed shell with into
The opposite inner wall of port is equipped with ultraviolet lamp, is equipped with oxygen increasing pump in the discharge chamber；It is equipped with and is filled with water in the second closed housing body
Container, the one side wall of the second closed shell are equipped with exhaust outlet, and the outside of exhaust outlet is equipped with exhaust hood, exhaust outlet and water container
Between be equipped with the 2nd HEPA filter screen, middle part is equipped with filler in the water container, and the lower part in water container is equipped with aeration head,
And the aeration head is connect by pipeline with oxygen increasing pump.
The pretreatment net 3 is titanium dioxide-carbon layer, and the titanium dioxide-carbon layer is made by following steps:
(1) preparation of TiO 2 sol: prepare the ultrapure water of 470 mL as solvent, the isopropanol of 15mL is added, side is added
Side stirring, the tetraisopropyl titanate of 15mL is then slowly added dropwise again, stirs evenly after being added dropwise, a little peroxidating is then added dropwise
Hydrogen solution makes solution be in clear state, then by beaker global transfer into thermostatical oil bath, after 160 DEG C of heat preservation 48h i.e.
TiO 2 sol is made.
(2) pretreatment of charcoal: taking mud adsorbent to be placed in a beaker, and excessive 2mol/L dilute hydrochloric acid is added in beaker, and
It is dispersed in mud adsorbent in dilute hydrochloric acid, then sonic oscillation 2h is carried out to it, then filter, obtain sediment, then spend
Ionized water, which carries out washing to it, makes into neutrality, and then microporous membrane filtration is dried for 24 hours at 110 DEG C, obtain pretreated charcoal.
(3) TiO 2 sol and charcoal is compound: taking above-mentioned pretreated charcoal 8g to be placed in a beaker, step is then added
(1) then beaker is placed in Ultrasound Instrument the sonic oscillation 40min at 40 DEG C, placed by TiO 2 sol 100mL made from
Magnetic stirring apparatus device heating water bath 1h when 70 DEG C, beaker is finally placed on to drying in 110 DEG C of baking oven for 24 hours, can be prepared by two
Titanium oxide-charcoal catalysis material.
The filler is prepared by the following steps to obtain: by weight, will be by 8 parts of mud adsorbents, 1.5 parts of water treatment plant's dirts
Mud, 0.5 part of lime stone, and it is squeezed into a section shape after water mixing is added, and rub the wet feed ball for being 20mm at diameter, it is allowed to natural wind
Dry, controlling its moisture content is 15%-20%, and select can from 1.5-2m free-falling and chip-proof pellet；Pellet is put
Enter in high-temperature electric resistance furnace and calcine, is raised to 1100 DEG C from room temperature and maintains to close after 5min and open electric furnace door after door is cooled to 1000 DEG C and accelerate
It is cooled to room temperature；Then the little particle for being 5-15mm at diameter by the material ball crushing of firing, is finally sieved, and is chosen diameter and is
The pellet of 10mm is required filler.
The filler first passes through biofilm processing in advance.
The mud adsorbent is prepared by the following steps to obtain: it is derived from the dewatered sludge of water treatment plant in 105 DEG C of drying 12h,
Activator is added in dry sludge, activating agent is by KOH and K2CO3The ratio of 1:2 in mass ratio mixes, activator with
The mass ratio of dry sludge is 3:1, and water is added makes into paste, it is filtered and is transferred to from after the closed 8h of sealer
In crucible；Crucible is placed in Muffle furnace in N2Carrying out procedural heating under protection since room temperature, heating rate is 10 DEG C/
Min keeps temperature-resistant calcining 80min after being warming up to 850 DEG C, and in N2The lower cooling of protection, turns sludge in crucible after cooling
It moves on in beaker, the hydrochloric acid solution being then mixed to prepare with the water of the HCl of 9 volumes and 1 volume impregnates 20min so that in sludge
Oxide and ash content sufficiently dissolve, and filtering obtains sediment, are then rinsed with 70 DEG C of deionized water to neutrality, drying grinding, mistake
25 meshes, that is, be made mud adsorbent.
The utility model has the advantages that
1, the use for laboratory environmental protection indoor air cleaner of a kind of combination photocatalysis of the invention and sludge media technology can be very
It degrades to the air pollutants in laboratory well, there is very high pollutants removal rate, can effectively ensure experiment people
The health of member.
2, air purifier of the present invention removes PM2.5 using filler, utilizes titanium dioxide-carbon and ultraviolet radiator collective effect
Photocatalyst effect advanced oxidation mode, the organic pollutant (formaldehyde, benzene, benzene homologues etc.) in air is decomposed into carbon dioxide
With the labile small molecule contaminants such as water, the cell membrane for destroying bacterium solidifies the protein of virus, changes the existence ring of virus
Border, to kill bacterial virus, while decomposing organic matter, carbon-based react with nano photo-catalytic removes stink.It is surveyed through test
It is fixed, the device can actually pollutant in effective treatment of laboratory air, wherein PM10 can be completely removed, PM2.5's
Removal rate also reaches nearly 100%, and SOx, NOx etc. can also be removed substantially, common volatility organic pollutant in Laboratory air
Removal rate also reached 98%, bacterium, pollen, hair in air etc. will also be completely removed.
3, sludge media bio-film colonization technology is the largest innovative point, can use microorganism and takes the photograph to pollutant in water body
Purification air indirectly is fetched, a kind of feasible indirect processing mode of biology is provided, furthermore by improving titanium dioxide-carbon coating
Surface nature improves the efficiency of photocatalyst catalytic oxidation technology, and the filler in later period itself has the specific surface area of superelevation,
It can be good at handling the by-product carbon dioxide of the technology.
4, it is to be equivalent to waste made of the sludge of sewage treatment plant that the present invention, which goes out used adsorbent filler etc.,
It utilizes, solves the problems, such as that partial sludge is disposed to a certain extent.
5, the long service life of the device of the invention probably every two years just will be more for the treatment effeciency for guaranteeing single unit system
Change titanium dioxide-carbon layer and filler.Furthermore during replacing both materials, appropriate the water for flooding filler can be replaced, with
Ensure the efficient operation of whole device.
Detailed description of the invention
Fig. 1, the use for laboratory indoor air cleaner for having both waste utilization and Disposal of Contaminants of the invention structure show
It is intended to.
The COD concentration curve figure of Inlet and outlet water when Fig. 2, biofilm.
Fig. 3, biofilm are into and out the ammonia nitrogen mass concentration change curve of water.
In figure: 1 is grid, and 2 be the first HEPA filter screen, and 3 be pretreatment net, and 4 be ultraviolet lamp, and 5 be oxygen increasing pump, and 6 be exposure
Gas head, 7 be filler, and 8 be exhaust hood, and 9 be water, and 10 be the 2nd HEPA filter screen.
Specific embodiment
Embodiment 1
The embodiment of the present invention is further described with reference to the accompanying drawing:
As shown in Figure 1, a kind of present invention, that is, use for laboratory indoor air cleaner for having both waste utilization and Disposal of Contaminants.It should
Clarifier is made of the first closed shell and the second closed shell, and the top of the first closed shell right side is equipped with air inlet, institute
Air inlet is stated equipped with grid 1, the first closed housing central section is equipped with partition, and the partition is by the first closed housing cavity from upper past
Under be separated into inlet plenum and discharge chamber, turn left in the inlet plenum from the right side and be successively arranged the first HEPA filter screen 2, pretreatment net 3,
The partition is equipped with so that the opening that inlet plenum be connected to discharge chamber, and is open and is set on the left of pretreatment net 3；First closed housing
The body inner wall opposite with air inlet is equipped with ultraviolet lamp 4, is equipped with oxygen increasing pump 5 in the discharge chamber；In the second closed housing body
Equipped with water container, the one side wall of the second closed shell is equipped with exhaust outlet, and the outside of exhaust outlet is equipped with exhaust hood 8, exhaust outlet
The 2nd HEPA filter screen 10 is equipped between water container, middle part is equipped with the filler 7 of successfully biofilm in the water container, is filled with water
Lower part in container is equipped with aeration head 6, and the aeration head 6 is connect by pipeline with oxygen increasing pump 5.Grid in the clarifier is used for
Completely cut off dust etc. bigger in air, the first HEPA filter screen is located in advance for removing granular-grade dust and various suspended matters
The collective effect for managing net, TiO2/C layers and ultraviolet lamp, then be by reluctant macromolecular organic pollutant through photocatalytic-oxidation
It is melted into the tractable substance of small molecule, gas is then extracted by lower layer's shell by oxygen increasing pump, into water layer, via being fixed on
The processing of biofilm filler and absorption in the middle part of water level.Micro-molecular gas by-product CO after photooxidation catalysis2Deng can pass through extension
The filler of film is handled.The microorganisms such as the bacterium in air can be inactivated through ultraviolet light irradiation, and PM2.5, SOx, NOx also can
It is enough to be handled by filling adsorption, and the performance of the filling adsorption processing pollutant after biofilm is stronger.The two of the air cleaning unit
A closed shell can be placed up and down, can also be placed side by side, and the environment that the first and second closed shell can be placed according to clarifier is big
Small adjustment placement position；Two closed shells can also be connected, can also be separated, and two closed shells are in oxygen increasing pump
Under the action of mutual conduction, can be come into full contact with it when air enters from grid through titanium dioxide-carbon layer complete photocatalysis it is anti-
It answers；In lower layer's treatment process, air enters the shell for filling water and multiple filling layers, air under the action of aeration through aeration head
It is diffused up in the form of bubble from bottom, passage in transit packing layer, gas can come into full contact with and react with filler.
The preparation of mud adsorbent: the dewatered sludge of water treatment plant is derived from 105 DEG C of drying 12h, is added in dry sludge
Enter the activator of corresponding amount, activating agent is by KOH and K2CO3The ratio of 1:2 in mass ratio mixes, activator and dry dirt
The mass ratio of mud is 3:1, and water appropriate is added makes into paste, with being filtered from after the closed 8h of sealer to it and be transferred to earthenware
In crucible.Crucible is placed in Muffle furnace in N2Starting to carry out procedural heating in room temperature under protection, heating rate is 10 DEG C/min,
Temperature-resistant calcining 80min is kept when being warming up to 850 DEG C, and in N2The lower cooling of protection.Sludge in crucible is transferred to after cooling
In beaker, and the hydrochloric acid solution that is mixed to prepare with the water of the HCl of 9 volumes and 1 volume impregnates 20min so that oxide in sludge
It is sufficiently dissolved with ash content, filters, obtain sediment, then rinsed with 70 DEG C of deionized water to neutrality, 25 mesh are crossed in drying grinding
Sieve, that is, be made mud adsorbent.
The preparation of titanium dioxide-carbon layer: sol-gal process is selected, the specific steps are as follows:
1. the preparation of TiO 2 sol: preparing the ultrapure water of 470 mL as solvent, the isopropanol of 15mL is added, when being added
Stirring, is then slowly added dropwise the butyl titanate of 15mL again, and (stirring 1 minute or so) is stirred evenly after being added dropwise, is then dripped
Add a little hydrogenperoxide steam generator that solution is made to be in clear state.The thermostatical oil bath for being 160 DEG C by beaker global transfer to temperature
In, TiO 2 sol is made after 48h.
2. the pretreatment of charcoal (mud adsorbent): taking above-mentioned obtained mud adsorbent to be placed in a beaker, be added in beaker
The 2mol/L dilute hydrochloric acid of amount, and it is dispersed in adsorbent in acid, sonic oscillation 2h is carried out to it, is then filtered, must be precipitated
Object, then carry out with deionized water washing to it and make into neutrality, microporous membrane filtration after then drying for 24 hours at 110 DEG C, takes out
For use.
3. TiO 2 sol and charcoal (mud adsorbent) is compound: measuring above-mentioned pretreated mud adsorbent 8g and set
In beaker, measured TiO 2 sol 100mL is then added, beaker is then placed in Ultrasound Instrument the ultrasound vibration at 40 DEG C
40min, supersonic frequency 20000Hz are swung, magnetic stirring apparatus device heating water bath 1h when 70 DEG C is then placed in, is finally placed on beaker
Drying for 24 hours, can be prepared by titanium dioxide-carbon catalysis material in 110 DEG C of baking oven.
The preparation of filler: purification plant sludge is added in mud adsorbent obtained above as aggregate, lime stone conduct
Additive, the weight ratio of mud adsorbent, purification plant sludge and lime stone are 8:1.5:0.5, and after water mixing appropriate is added
It is squeezed into a section shape with 20mL syringe, and rubs the wet feed ball for being 20mm at diameter, is allowed to natural air drying, controlling its moisture content is
15%-20%, and select can from 1.5-2m free-falling and chip-proof pellet.Pellet is put into high-temperature electric resistance furnace and is calcined,
1100 DEG C, which are raised to, from room temperature and maintains to close after 5min opens electric furnace door acceleration after door is cooled to 1000 DEG C and be cooled to room temperature.Then will
The little particle that the material ball crushing of firing is 5-15mm at diameter, is finally sieved, and it is required for choosing the pellet that diameter is 10mm
Filler.
Biofilm: being placed in above-mentioned obtained filler in bucket, while the seed sludge of low concentration and sewage being mixed
It is added in bucket afterwards, stands 4-6h, make the loading on filler to being inoculated with slowly of the microorganism in sludge, then change into again
The seed sludge and sewage mixture of high concentration, then 4-6h is stood, the concentration of seed sludge and sewage is gradually increased until biofilm
Success.
The COD concentration and ammonia nitrogen mass concentration of Simultaneous Determination Inlet and outlet water during biofilm.Inlet and outlet water when Fig. 2 is biofilm
COD concentration curve figure；Fig. 3 is the ammonia nitrogen mass concentration change curve that biofilm is into and out water.
The aeration tank known to Fig. 2 and 3 is discharged COD mass concentration after starting 8d and drops to 30 mg/L, COD mass when arriving 12d
Concentration is 20 mg/L, but water-in and water-out ammonia nitrogen mass concentration is very close to this procedure declaration heterotroph raised growth.Then, out
Water COD mass concentration is lower than 15 mg/L, and heterotroph starts to mitigate to the inhibiting effect of Autotrophic nitrification bacterium, and nitrifier starts largely
Growth, breeding, so ammonia nitrogen removal frank is begun to ramp up, and removal effect tends to stablize, and illustrates to have formed stable state on filler
Biomembrane.
Above-mentioned dewatered sludge is that the sludge of water treatment plant is further dehydrated and obtains；Seed sludge used in biofilm is net
Waterworks sludge, sewage are water treatment plant's sewage, are taken from sewage treatment plant of the Nanjing village Suo Jin.
The purification process of use for laboratory indoor air cleaner of the invention is as follows:
1. gas enters clarifier from the grid on device upper layer, HEPA filter screen is reached, hair, the skin of lab assistant in air
The large particulate matters such as bits, solid sample clast are removed.
2. titanium dioxide-carbon and the coefficient photochemical catalytic oxidation of ultraviolet lamp are utilized, by the organic dirt of macromolecular in air
Dye object (formaldehyde, benzene etc.) is decomposed into the degradable small molecule organic pollutant such as carbon dioxide and water, and by destroying bacterium
The cell membrane on surface solidifies the protein of virus, changes the living environment of virus, so that bacterial virus is killed, it is organic decomposing
While object, carbon-based react with nano photo-catalytic removes stink.
3. after oxygen increasing pump compresses the polluted gas after light catalytic purifying, then inputting the aeration head of bottom, pollution
Air enters packing layer by bottom, and the gas by filling adsorption is discharged from filler pond top.
It, on a small quantity can be by microorganism on biomembrane as battalion 4. the gas pollutant by filler can be largely absorbed
Substance is supported to absorb and be used to be proliferated.
5. product (the CO of photocatalyst technology2) etc. other gases not soluble in water due to the pressure by liquid level, slowly on
It is floating, by being adsorbed when the loose porous packing layer of internal structure by pellet；The finely ground particle substances such as PM2.5 are dissolved in after water also by filler
The absorption of internal defect hole.
6. treated, gas is pumped by blower to the HEPA filtering meshes for being tightly attached to exit, and air is carried from filler
Microbes sufficiently stopped by HEPA, further purified the air in laboratory.
7. purified gas is discharged from the exhaust outlet of exhaust fan.
Claims (5)
1. a kind of use for laboratory indoor air cleaner for having both waste utilization and Disposal of Contaminants, it is characterised in that: the purification
Device is made of the first closed shell and the second closed shell, and the top of the first closed shell right side is equipped with air inlet, it is described into
Port be equipped with grid (1), the first closed housing central section be equipped with partition, the partition by the first closed housing cavity from top to bottom
It is separated into inlet plenum and discharge chamber, turns left in the inlet plenum from the right side and is successively arranged the first HEPA filter screen (2), pretreatment net
(3), the partition is equipped with so that the opening that inlet plenum be connected to discharge chamber, and is open and is set to pretreatment net (3) left side；First
The closed shell inner wall opposite with air inlet is equipped with ultraviolet lamp (4), is equipped with oxygen increasing pump (5) in the discharge chamber；Described second
Water container is equipped in closed housing body, the one side wall of the second closed shell is equipped with exhaust outlet, and the outside of exhaust outlet is equipped with air draft
It covers (8), the 2nd HEPA filter screen (10) is equipped between exhaust outlet and water container, middle part is equipped with filler in the water container
(7), the lower part in water container is equipped with aeration head (6), and the aeration head (6) is connect by pipeline with oxygen increasing pump (5).
2. a kind of use for laboratory indoor air purification for having both waste utilization and Disposal of Contaminants according to claim 1
Device, it is characterised in that: the pretreatment net (3) is titanium dioxide-carbon layer, and the titanium dioxide-carbon layer is made by following steps:
(1) preparation of TiO 2 sol: prepare the ultrapure water of 470 mL as solvent, the isopropanol of 15mL is added, side is added
Side stirring, the tetraisopropyl titanate of 15mL is then slowly added dropwise again, stirs evenly after being added dropwise, a little peroxidating is then added dropwise
Hydrogen solution makes solution be in clear state, then by beaker global transfer into thermostatical oil bath, after 160 DEG C of heat preservation 48h i.e.
TiO 2 sol is made；
(2) pretreatment of charcoal: taking mud adsorbent to be placed in a beaker, and excessive 2mol/L dilute hydrochloric acid is added in beaker, and make dirt
Mud adsorbent is dispersed in dilute hydrochloric acid, then carries out sonic oscillation 2h to it, is then filtered, and obtains sediment, then use deionization
Water, which carries out washing to it, makes into neutrality, and then microporous membrane filtration is dried for 24 hours at 110 DEG C, obtain pretreated charcoal；
(3) TiO 2 sol and charcoal is compound: taking above-mentioned pretreated charcoal 8g to be placed in a beaker, step (1) then is added
Then beaker is placed in Ultrasound Instrument the sonic oscillation 40min at 40 DEG C, places into magnetic by TiO 2 sol 100mL obtained
Power blender device heating water bath 1h when 70 DEG C, beaker is finally placed on to drying in 110 DEG C of baking oven for 24 hours, can be prepared by dioxy
Change titanium-charcoal catalysis material.
3. a kind of use for laboratory indoor air purification for having both waste utilization and Disposal of Contaminants according to claim 1
Device, it is characterised in that: the filler is prepared by the following steps to obtain: by weight, by 8 parts of mud adsorbents, 1.5 parts of water treatment plants
Sludge, 0.5 part of lime stone are squeezed into a section shape after water mixing is added, and rub the wet feed ball for being 20mm at diameter, are allowed to natural wind
Dry, controlling its moisture content is 15%-20%, and select can from 1.5-2m free-falling and chip-proof pellet；Pellet is put
Enter in high-temperature electric resistance furnace and calcine, is raised to 1100 DEG C from room temperature and maintains to close after 5min and open electric furnace door after door is cooled to 1000 DEG C and accelerate
It is cooled to room temperature；Then the little particle for being 5-15mm at diameter by the material ball crushing of firing, is finally sieved, and is chosen diameter and is
The pellet of 10mm is required filler.
4. a kind of use for laboratory indoor air purification for having both waste utilization and Disposal of Contaminants according to claim 3
Device, it is characterised in that: the filler first passes through biofilm processing in advance.
5. a kind of use for laboratory indoor air cleaning for having both waste utilization and Disposal of Contaminants according to claim 2 or 3
Change device, it is characterised in that: the mud adsorbent is prepared by the following steps to obtain: being derived from the dewatered sludge of water treatment plant at 105 DEG C
12h is dried, activator is added in dry sludge, activating agent is by KOH and K2CO3The ratio of 1:2 in mass ratio mixes,
The mass ratio of activator and dry sludge is 3:1, and water is added makes into paste, is filtered with from after the closed 8h of sealer to it
And it is transferred in crucible；Crucible is placed in Muffle furnace in N2Procedural heating, heating rate are carried out under protection since room temperature
For 10 DEG C/min, temperature-resistant calcining 80min is kept after being warming up to 850 DEG C, and in N2The lower cooling of protection, will be in crucible after cooling
Sludge is transferred in beaker, and the hydrochloric acid solution being then mixed to prepare with the water of the HCl of 9 volumes and 1 volume impregnates 20min so that dirt
Oxide and ash content in mud sufficiently dissolve, and filtering obtains sediment, are then rinsed with 70 DEG C of deionized water to neutrality, drying
Grinding crosses 25 meshes, that is, mud adsorbent is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145750.2A CN109340942A (en) | 2018-09-29 | 2018-09-29 | A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145750.2A CN109340942A (en) | 2018-09-29 | 2018-09-29 | A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109340942A true CN109340942A (en) | 2019-02-15 |
Family
ID=65307409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145750.2A Pending CN109340942A (en) | 2018-09-29 | 2018-09-29 | A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109340942A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702202A (en) * | 2005-06-22 | 2005-11-30 | 中山大学 | Active carbon fiber containing nano titanium dioxide particles and its preparation method and uses |
| US20050268583A1 (en) * | 2004-06-02 | 2005-12-08 | Samsung Electronics Co., Ltd. | Air purifier and air purification method |
| CN104807084A (en) * | 2015-01-21 | 2015-07-29 | 南通大学 | Air purifier for removing PM2.5 through microorganism |
| CN105688814A (en) * | 2016-03-18 | 2016-06-22 | 中国科学院生态环境研究中心 | Method for preparing phosphorus-removing adsorbent by utilizing sludge of sewage treatment plant |
-
2018
- 2018-09-29 CN CN201811145750.2A patent/CN109340942A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050268583A1 (en) * | 2004-06-02 | 2005-12-08 | Samsung Electronics Co., Ltd. | Air purifier and air purification method |
| CN1702202A (en) * | 2005-06-22 | 2005-11-30 | 中山大学 | Active carbon fiber containing nano titanium dioxide particles and its preparation method and uses |
| CN104807084A (en) * | 2015-01-21 | 2015-07-29 | 南通大学 | Air purifier for removing PM2.5 through microorganism |
| CN105688814A (en) * | 2016-03-18 | 2016-06-22 | 中国科学院生态环境研究中心 | Method for preparing phosphorus-removing adsorbent by utilizing sludge of sewage treatment plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204421208U (en) | A kind of multifunctional air purifying case | |
| CN204629800U (en) | A kind of clarifier avoiding filter net jam | |
| CN108421401B (en) | Biological treatment system and method for organic waste gas | |
| Baltrėnas et al. | Investigation into the air treatment efficiency of biofilters of different structures | |
| CN202778234U (en) | Combined-type organic waste gas treatment device | |
| CN104456755A (en) | Bi-power combined type air purifier | |
| CN108568213A (en) | Table type laboratory air pollutant removal machine | |
| CN103977755B (en) | A kind of high catalytic oxidation activity material for air purification | |
| CN105465898A (en) | Photocatalyst air purifier | |
| CN104785033A (en) | Air filter adopting composite filtering net | |
| JP2006110470A (en) | Water cleaning agent | |
| CN104807085A (en) | Air purifier for removing PM2.5 by microalgae and application method of air purifier | |
| US20090064858A1 (en) | Biological process for purifying air in confined rooms and apparatus thereof | |
| CN106823781A (en) | A kind of air purifier for removing indoor VOCs and preparation method thereof | |
| CN100368062C (en) | Photo-catalytic air cleaner | |
| CN108543404A (en) | A kind of injection molding machine emission-control equipment of avoidable secondary pollution | |
| CN208244431U (en) | Obligate bacterium living beings filter emission-control equipment | |
| CN107774063A (en) | Renewable circulating liquid formula air cleaning unit and purification method | |
| CN204880427U (en) | Air purifier | |
| CN109340942A (en) | A kind of use for laboratory indoor air cleaner having both waste utilization and Disposal of Contaminants | |
| CN204619601U (en) | A kind of filter of tubular filter screen | |
| CN201944957U (en) | Improved air purifier | |
| CN205448021U (en) | Clean fan of aerobic | |
| CN210688542U (en) | Photocatalysis air purification device | |
| CN204313403U (en) | A kind of double dynamical Combined air clearing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |
|
| RJ01 | Rejection of invention patent application after publication |