CN106000024A - Deep purifying method and device for treating toxic harmful polluted gas - Google Patents
Deep purifying method and device for treating toxic harmful polluted gas Download PDFInfo
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- CN106000024A CN106000024A CN201610569164.5A CN201610569164A CN106000024A CN 106000024 A CN106000024 A CN 106000024A CN 201610569164 A CN201610569164 A CN 201610569164A CN 106000024 A CN106000024 A CN 106000024A
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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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
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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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
The invention discloses a deep purifying method and device for treating toxic harmful polluted gas. The deep purifying device comprises a plasma reactor, a pneumatic emulsifying tower, a biological tower and a water circulation system, wherein a gas outlet in the upper end of the plasma reactor is connected with a gas inlet of the pneumatic emulsifying tower through a gas pipeline, and a circulating water tank is arranged under the pneumatic emulsifying tower and the biological tower and shared by the pneumatic emulsifying tower and the biological tower; a dehydrating demister is arranged in the pneumatic emulsifying tower; the water circulation system works in the manner that water in the circulating water tank flows through a water pump, flows through the pneumatic emulsifying tower and the biological tower, and then returns to the circulating water tank for recycling. The toxic harmful polluted gas enters the plasma reactor for preliminary decomposition and removal, then the toxic harmful polluted gas after the preliminary decomposition and removal enters the pneumatic emulsifying tower for gas-liquid mixed emulsification, separation and purification, the purified gas is dehydrated and demisted, then the demisted gas is exhausted into atmosphere, and produced waste water enters the biological tower to be degraded into harmless odorless substances, so that the cyclic utilization of the water is realized. According to the deep purification method and device disclosed by the invention, the influence of O3 with a high oxidizing property produced by the plasma reactor to the activity of biological bacteria is avoided, and secondary pollution is not produced.
Description
Technical field
The present invention relates to technical field of waste gas treatment, specifically a kind of poisonous and harmful dusty gas controlled depth purification method and
Device.Relate to the complementary effect of a kind of plasma reactor, Pneumatic emulsifying tower and bioanalysis three so that poisonous and harmful is dirty
Dye gas rapid conversion is digested by biological inoculum in liquid, it is achieved the deep purifying of gas.
Background technology
The waste gas that commercial production is discharged contains the gas being detrimental to health and affecting environmental quality, this gas is returned
Receiving and utilize, or carry out nontoxicization process, referred to as toxic and harmful is administered.
All there is zest toxic and harmful in many industrial processes, as electric welding, electroplate, smelt, chemical industry, oil,
The industries such as feedstuff.These gases have corrosivity more, enter human body through respiratory tract and can cause acute poisoning.Irritative gas pair
The common feature of the toxic action of body, is that eye, respiratory mucosa and skin are all had zest in various degree.Typically with
Local lesion is main, but also can cause general reaction.
The toxic and harmful kind discharged in commercial production is a lot, mainly has sulfur dioxide, sulfur trioxide, hydrogen sulfide, sulfur
Alcohol, nitric oxide, nitrogen dioxide, ammonia, carbon monoxide, ozone, fluorine are than hydrogen, chlorine, hydrogen chloride, organohalogen compounds, carbon
Hydrogen compound, benzene, formaldehyde, volatile phenol etc..Administering according to the different chemical property of various harmful gass and thing of harmful gas
Rationality matter, takes different methods respectively.Conventional method has condensation method, combustion method, absorption method, bioanalysis, absorption process
Deng.
Wherein, condensation method is to have different saturated vapour pressures at different temperature according to polluter, reduces commercial production
The temperature of waste gas discharged, can make the material condensation of some harmful gass or vaporous become liquid, separate from waste gas and
It is removed.Condensation method equipment is simple, easy to operate, and recyclable purer product does not cause secondary pollution, but is used for
Except low-temperature and low-concentration harmful gas poor effect.
Combustion method is that some harmful gas in industrial waste gas is carried out oxidizing fire or pyrolytic, is allowed to be converted into harmless object
Matter.Combustion method (mainly contains hydrocarbon be applicable to processing waste gas the flammable harmful gas that concentration is higher, caloric value is bigger
Gaseous material), ignition temperature is typically at 600～800 DEG C.Combustion method is simple and easy to do, recyclable heat energy, but can not reclaim
Harmful gas, easily causes secondary pollution.
Absorption method is to utilize porous solid adsorbent organic component, to reach the purpose separated, is mainly used in low concentration
The purified treatment of organic exhaust gas.The method purification efficiency is high, and non-secondary pollution is easy to operate, and can realize automatically controlling.
Weak point is that the adsorption capacity of adsorbent is limited, needs Regeneration Treatment adsorbent.If adsorbent single use can bring again
Process the problem that Master Cost is high.It addition, when in waste gas containing colloidal sol shape particulate matter or other impurity, adsorbent easily lost efficacy.
Biological method purification exhaust process substantially utilizes the vital movement of microorganism to be changed into simply by the harmful substance in waste gas
Organic substance (such as CO2 and H2O) and Cytoplasm.Propose according to Holland scholar Ottengraf, double films conventional in the world are managed
Opinion, this theory thinks that biological cleaning is harmful to organic exhaust gas typically through three steps: (1) waste gas contacts with water and is dissolved in the water
(i.e. by gas phase diffusion to liquid phase), follows Henry's law；(2) exhaust gas constituents dissolved in liquid phase spreads under the promotion of concentration difference
In biomembrane, by microorganism adsorption, absorption；(3) exhaust gas constituents in vivo as nutrient substance and the energy by microorganism
Decompose and utilize, be eventually converted into harmless compound through biochemical reaction, such as CO2And H2O, has the latent of wide popularization and application
, there is exhaust gas residence time length (generally at more than 10s) in matter, but Biochemical method waste gas and biological tower equipment volume is huge
Greatly, require the pollutant good water solubility in waste gas in addition, and be prone to be biodegradable.But, benzene, toluene, formaldehyde,
The organic compound such as phenol, chlorophenol, chloroform or because of poorly water-soluble or slow because of biodegradation rate, or because of
The living environment that biological inoculum is to be aspired for stability, or poor effect after using Biochemical method.
Absorption process is by the harmful gas in solution or solvent absorption industrial waste gas, makes it separate with waste gas and be removed.Absorb
Method different solution or solvent, absorbable different harmful gas, range of application is relatively wide, and recyclable useful product；
But absorption process purification efficiency is the highest, absorbing liquid needs to process.The master of toxic harmful exhaust gas is wherein purified with Pneumatic emulsifying absorption tower
Wanting principle to be described: in a bulge, accelerated waste gas enters container at a certain angle from container lower end, forms rotation
Turning the turbulent airflow risen, the unstable liquid dirty with container upper end is collided, and waste gas high-speed rotary cuts stream solution, solution quilt
Chopping, gas-liquid mutual constant collision rotary-cut, drop is pulverized more and more thin, and gas-liquid is sufficiently mixed, and forms a stable breast
Change liquid layer.Realizing gas-liquid emulsifying during high-speed gas liquid mixed flow, along with emulsifying liquid layer progressive additive, upper is pneumatic
The gravity of power and emulsion reaches balance, and emulsifying liquid layer continues to thicken the emulsion that the emulsion formed the earliest is newly formed and takes
In generation, flow through equal air chamber with the impurity being captured and drop down onto the bottom on absorption tower.Toxic harmful exhaust gas is participated in Pneumatic emulsifying tower
Pneumatic emulsifying process, gas produces emulsion layer with liquid mixing, and the pollutant that gas and liquid are fully contacted in gas are by liquid
Body absorption and separation, gas is purified, and is discharged in air by being dehydrated antifog purification gas.Due at Pneumatic emulsifying
In tower, the specific surface area of drop bigger than wet method gas purifying methods such as conventional spray, atomization washings several times to tens times, because of
The efficiency of this unit liquid measure trapping poisonous and harmful organic exhaust gas significantly increases, and water consumption is few.For waste gas, gas and liquid
Body mixing and emulsifying separates, and is more beneficial for purification process.The absorbent on Conventional pneumatic emulsifying absorption tower is water or chemical agent,
Pollutant in gas are transferred to, in liquid, easily cause secondary pollution.
The main operational principle of plasma for purification poisonous and harmful organic exhaust gas is: utilize plasma produced by streamer-discahrge
Gas molecule in bombardment waste gas the most repeatedly, inside the various emission molecules activate, ionize, cracked in waste gas
Chemical bond, make the macromole of complexity be changed into the safe material (such as carbon dioxide and water) of some little molecules.It practice,
Be opened by different chemical bonds, the energy of needs is different, such as C-H, C-O, C-N, C-S, O-H, S-H etc..When
Power is relatively low, and during the produced active particle energy deficiency of electric discharge, some macromolecular substances are simply crashed to pieces, and form some little
Molecular compound, by exhaustive oxidation.Especially for the purification of mixed gas, some molecule is more easily damaged and quilt
Exhaustive oxidation, some molecule be then difficult to destroyed or simply degraded and not by exhaustive oxidation.But plasma for purification is organic
The method of harmful exhaust is efficient cracking and the method for oxidation, is characterized in being not limited to process certain several organic and inorganic matter
Matter, can the most effectively process almost all of organic hazardous compound and inorganic substances in waste gas.Electric energy is utilized in depurator
Directly act on harmful substance in waste gas, there is efficient and energy-conservation feature.But there is exhaust emission degraded and purify not exclusively,
By-product (O can be produced3) etc. problem.
Poisonous and harmful Organic Waste Gas Pollution disturbs residents, and easily causes the contradiction that residence requires with industrial environment, therefore pursues poisonous
Harmful organic exhaust gas deep purifying is the inevitable choice of market economy and people's livelihood engineering.More it is strict with to meet and improves
The adaptability of system and reliability, the present invention proposes a kind of poisonous and harmful dusty gas controlled depth purification method, relates to one
Plant the complementary effect of plasma reactor, Pneumatic emulsifying tower and bioanalysis three so that poisonous and harmful dusty gas quickly turns
Change and digested by biological inoculum in liquid, it is achieved the deep purifying of gas, non-secondary pollution problem.
The problem solved:
1, purify the principle of poisonous and harmful organic exhaust gas due to non-thermal plasma trap, be allowed to the clean-up effect to waste gas not
Thoroughly, or realize thoroughly purifying needing to expend a large amount of energy consumption.For the purification of mixed gas, some molecule is more easily damaged
And by exhaustive oxidation, some molecule be then difficult to destroyed or simply degraded and not by exhaustive oxidation.It is exclusively used in poisonous and harmful
The plasma technique of waste gas cleaning system, makes to form stable argon-arc plasma field by specific supply voltage current parameters,
Make all toxic harmful exhaust gas molecular charge ionizings, it is achieved the early stage pretreatment of waste gas, and strengthen the hydrophilic of exhaust emission
Property.
2, Pneumatic emulsifying tower purifies toxic harmful exhaust gas, general using water or chemical absorbent as emulsifying agent, but poisonous
Deleterious molecular does not the most have hydrophilic, therefore causes mass transfer effect the best, and this project uses low-temperature plasma pre-as early stage
After process, improve harmful poisonous deleterious molecular and there is hydrophilic, substantially increase gas-liquid mass transfer efficiency, meet stricter
Requirement, improves adaptability and the reliability of system.In addition this project uses the water containing biological inoculum as absorbent, it is to avoid
The chemical agent harm to biological inoculum, it is to avoid produce secondary pollution problems.
3, general bioprocess technology generally uses packed column, and biological bacteria is supported on inserts surface, increases exhaust gas contact area
Biomembrane, waste gas is dissolved in biofilm surface after moistening biomembrane, thus is progressively purified by biological inoculum.Biomembranous
The living environment that growth is to be aspired for stability, and place's process gases needs with biomembrane and longer contacts the time of staying, causes biological tower to set
The situation that standby profile is excessive.There is the contradiction between biological cleaning effect and turriform, waste gas-biofilm contact area ratio is with biological
The contradiction that strain living environment stability requirement is high.In addition using plasma technology and bio combined technique plasma
Ozone (the O produced3), the activity of the biological bacteria in suppression bioprocess technology, cause the two to combine and toxic harmful exhaust gas is processed
Do not reach preferable clean-up effect.
Summary of the invention
It is an object of the invention to provide a kind of good purification, non-secondary pollution, do not affect the poisonous and harmful that biological bacteria is active
Dusty gas controlled depth purification method and device thereof, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of poisonous and harmful dusty gas controlled depth purifier, including plasma reactor, Pneumatic emulsifying tower, biology
Tower and water circulation system, the gas outlet, upper end of plasma reactor connects the air inlet of Pneumatic emulsifying tower by gas pipeline,
The lower section common recycle water tank of Pneumatic emulsifying tower and biological tower；Pneumatic emulsifying tower is contained within dehydration demister；Water circulation system is
The water of cyclic water tank returns to cyclic water tank after water pump is respectively by Pneumatic emulsifying tower, biological tower, recycles.
As the further scheme of the present invention: the lower section of plasma reactor is provided with air inlet, air inlet passes through gas pipeline
It is sequentially connected with blower fan.
As the further scheme of the present invention: plasma reactor is connected with high voltage power supply.
As the further scheme of the present invention: arrange in Pneumatic emulsifying tower and inject the absorbent containing biological flora, biological flora
Including bacillus, bacteriophage and bacterium nitrobacter.
As the further scheme of the present invention: absorbent is water or the water containing biological inoculum.
As the further scheme of the present invention: have biological flora to cultivate in biological tower and repair packing layer, filler is by material of making pottery, biology
Matter fiber forms, and is distributed in tower.
As the further scheme of the present invention: be provided with the packing layer of biological flora survival and reproduction in biological tower, biological flora includes
Bacillus, bacteriophage and bacterium nitrobacter；Packing layer is made up of the customary filler such as haydite, biomass fiber.The present invention's
Another object is to provide a kind of poisonous and harmful dusty gas controlled depth purification method, comprises the following steps:
1) poisonous and harmful dusty gas enters in plasma reactor through blower fan, and utilize in plasma reactor is big
Amount active particle carries out direct preliminary exposition removal to poisonous and harmful dusty gas, and complicated, to be insoluble in water macromole is had
Poison harmful substance is decomposed into simple small-molecule substance, and makes the pollutant in gas improve its hydrophilic；
2) gas after plasma reactor processes enters Pneumatic emulsifying tower, carries out gas-liquid mixed emulsifying with absorbent,
Pollutant in gas are by liquid phase adsorption separation, and gas is purified gas through dehydrator dehydrating demisting again, purify gas row
In atmospheric environment, waste water produced by mixing and emulsifying purification process is entered by the biological bacteria in tower in water pipe enters biological tower
Row decompose, water pollutant is degraded into harmless odorless material, through biological tower process after water through cyclic water tank again as gas
The absorbent of dynamic emulsification tower recycles, and also serves as the make-up water of biological tower spray liquid, it is achieved recycling of water simultaneously.
Compared with prior art, the invention has the beneficial effects as follows:
Poisonous and harmful in waste gas is polluted by a large amount of active particles during 1, the present invention utilizes corona plasma reactor
After thing carries out early stage process, complexity macromolecular substances is converted into simple compounds, water-fast poisonous and harmful substance is divided
Solve, form material soluble in water, process subsequently into Pneumatic emulsifying tower, make the pollutant in gas be absorbed by absorbent,
Pollutant quickly separate from gas.2, the present invention uses the Pneumatic emulsifying tower of high mass transfer efficiency, quickly by the dirt in gas
Dye thing transfers to liquid and by absorption and separation, and gas is purified, and purified gas is arranged outside dehydrating demisting.Increase pneumatic
Emulsification tower link is to improve the mass-transfer efficiency of gas-liquid, and absorbent is water, containing high-efficiency active biological flora in water, increases and passes
Matter effect.3, the biological tower provided is not passed through waste gas, exclusively for cultivating biological bacteria, provides a stability and high efficiency for biological bacteria
Nurturing an environment, do not affected by the factor such as change of processed EGT, pollutional load and component.Can fully allow life
Thing bacterium decompose digestion through plasma reactor process after toxic harmful exhaust gas and plasma catabolite, release because of etc.
Strong oxidizing property O that plasma reactor produces3Impact on biological bacteria activity.Analyze also from the mechanism of Biochemical method waste gas
Checking, the pollutant in waste gas are transferred to carry out at biological harmless in liquid through the absorbent absorption of Pneumatic emulsifying tower again
Reason, the process processing waste gas with standard biologic method is clearly distinguished from, at the situation ensureing that clean-up effect is consistent, the body of biological tower
Amass and do not affected by gas residence time, advantageously reduce the volume of biological tower.4, the present invention is helpful is poisonous and harmful
Gas realizes charged ionizing by plasma reactor after being processed, make the molecule activation of the pollutant in gas strengthen hydrophilic
Property, improve the isolation of purified efficiency of Pneumatic emulsifying tower, it is achieved master gas deep purifying, useless produced by high speed pneumatic emulsifying
Water conservancy biological method purification, non-secondary pollution produces.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representations；
In figure: 1-blower fan, 3-plasma reactor, 4-high voltage power supply, 5-biological tower, 6-Pneumatic emulsifying tower, 7-recirculated water
Case, 8-dehydration demister, 2-water pump.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, aobvious
So, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1, in the embodiment of the present invention, a kind of poisonous and harmful dusty gas controlled depth purifier, including etc. from
Daughter reactor 3, Pneumatic emulsifying tower 6, biological tower 5 and water circulation system, the gas outlet, upper end of plasma reactor 3
The air inlet of Pneumatic emulsifying tower 6, the lower section common recycle water tank of Pneumatic emulsifying tower 6 and biological tower 5 is connected by gas pipeline
7.Pneumatic emulsifying tower 6 is contained within dehydration demister.Water circulation system is that the water of cyclic water tank 7 passes through respectively through water pump 2
Return to cyclic water tank after Pneumatic emulsifying tower 6, biological tower 5, recycle.
Poisonous and harmful dusty gas is respectively by clean through dehydration demister 8 after plasma reactor 3, Pneumatic emulsifying tower 6
Change the outer row of dehydration.
The lower section of plasma reactor 3 is provided with air inlet, and air inlet passes through gas pipeline connecting fan 1.Plasma is anti-
Device 3 is answered to be connected with high voltage power supply 4.High voltage power supply 4 parameter of plasma is 5～50 kilovolts of average voltages and crest voltage,
Electric current direct current, exchange, high frequency or pulsed high voltage generator not less than 0.01 milliampere is powered.Arrange in Pneumatic emulsifying tower 6 and contain
The absorbent of biological flora, containing biological flora in biological tower 5, biological flora includes bacillus, bacteriophage and nitrification
Bacillus.
A kind of poisonous and harmful dusty gas controlled depth purification method, comprises the following steps:
1) poisonous and harmful dusty gas carries out preliminary exposition removal in blower fan 1 enters plasma reactor 3, utilizes
A large amount of active particles in plasma reactor 3 can carry out direct preliminary exposition removal to toxic harmful exhaust gas pollutant,
Complicated, be insoluble in the waste gas substance decomposition of water, and macromole poisonous and harmful substance is converted into simple small-molecule substance simultaneously,
Improve its hydrophilic.
2) gas after plasma reactor 3 processes enters Pneumatic emulsifying tower 6, enters through the absorbent containing biological flora
Row mixing and emulsifying purifies, and the pollutant in gas are by absorbent absorption and separation；The gas purified through mixing and emulsifying removes through dehydration
It is discharged in air after mist；Waste water produced by mixing and emulsifying purification process enters biological tower 5 through water pipe, through biological flora
Decomposition, is digested to harmless nothing by the degraded of Pollutants in Wastewater such as plasma catabolite and other hazardous contaminant
Sordes matter, the water after biological flora biochemical treatment through cyclic water tank 7 again as Pneumatic emulsifying tower absorbent recycle,
Also can be as the make-up water of biological tower 5 spray liquid, it is achieved recycling of water, do not produce secondary pollution.
Plasma reactor 3 can use alternating current and direct current, high frequency or pulsed high voltage generator (i.e. high voltage power supply 4) power supply,
The streamer-discahrge argon-arc plasma field being reasonably distributed is set up in this plasma reactor 3.By applying enough on two arrays of electrodes
High voltage, forms highfield between electrode, and electric field intensity forms the ionization of gas high density at 15kV/cm～30kV/cm
High fluence optical plasma field, produces ion O, O of high concentration3, the free radical such as OH, methyl sulfide, containing ammonia (NH3), sulfuration
Hydrogen (H2S), methanthiol (CH3Etc. SH) complicated poisonous and hazardous pollutant are decomposed oxidation during streamer-discahrge, finally
The toxic harmful exhaust gas making complexity becomes simple compounds after plasma reactor 3 preliminary purification.
Plasma reactor 3 is efficient cracking and the primary process of oxidation toxic harmful exhaust gas process, is characterized in not office
It is limited to process certain several organic and inorganic substances, can the most effectively process all types of poisonous and harmfuls in complicated toxic harmful exhaust gas and divide
Son.Administer, as single plasma reactor 3, the problem that toxic and harmful is primarily present to have: when gas flow is bigger,
Conversion ratio is the highest；Pollutant may produce compound and synthetic reaction in plasma reactor again, produces new pollutant and makes
Become secondary pollution.
Because of plasma reactor 3 structural principle, exist in purification process and be easily generated a large amount of O3Etc. strong oxidizing property composition, with
Plasma-bioanalysis is as toxic harmful exhaust gas cleaning system, easily because of O3Etc. strong oxidizing property composition, biological flora is produced
Directly impact, so that the disposal ability of biological flora has undesirable effect, reduces and limits clean-up effect.Ozone pair
The impact of subsequent bio bacterium detergent power is mainly reflected in its strong oxidizing property, can destroy the cell wall of biological bacteria, thus drop
Low biological activity.
Pneumatic emulsifying tower 6: through plasma reactor 3 process after toxic harmful exhaust gas and plasma catabolite with one
Determine angle and accelerate into Pneumatic emulsifying tower 6 from container lower end, formed and rotate the turbulent airflow risen, and on Pneumatic emulsifying tower 6
Holding dirty solution to collide, waste gas high-speed rotary cuts stream solution, and solution is chopped into, gas-liquid mutual constant collision rotary-cut, liquid
Dripping pulverized more and more thin, gas-liquid is sufficiently mixed, and forms a stable gas-liquid emulsion layer.In emulsion process, emulsion
Layer progressive additive, upper aerodynamic force reaches balance with the gravity of emulsion, and emulsifying liquid layer continues to thicken the emulsifying ultimately formed
The emulsion that liquid is newly formed replaces, and moves the bottom of emulsification tower 6 with the trash flow air inlet being captured.Dirty containing poisonous and harmful
The waste gas of dye thing, has participated in mixing and emulsifying process, gas pollutant and absorption in emulsifying liquid layer in high speed pneumatic emulsification tower
Agent is fully contacted, and pollutant are purified by absorbent absorption and separation, gas.Due in emulsifying liquid layer, gas-to-liquid contact
The conventional wet type gas purification method of surface area ratio big several times to tens times, therefore unit liquid measure trapping and absorb poisonous and harmful
The efficiency of waste gas material significantly increases, and fluid volume significantly reduces.Removal can be sufficiently separated at plasma reactor 3
The hazardous contaminant in waste gas after reason and the catabolite of plasma, and release because plasma reactor 3 produces
Strong oxidizing property O3Impact on biological bacteria activity.
Biological tower 5: the pollutant of toxic harmful exhaust gas use biologic treating technique to be poisonous by the biochemical decomposition of biological flora
Pollutant in harmful exhaust and gas ions catabolite become the technology of harmless odorless material.The biological tower of the present invention is not passed through
Waste gas, the most directly processes the pollutant in waste gas, but as decomposing, purifying by Pneumatic emulsifying tower separate absorbent gaseous contaminant
Transfer to the hazardous contaminant in water, and cultivate reparation biological flora, toxic harmful exhaust gas process of carrying out a biological disposal upon: waste gas
In toxic organics and inorganic matter by Pneumatic emulsifying tower, transferred in water by separate absorbent, sent through cyclic water tank
Entering in biological tower, on the filling bed of material being evenly distributed in biological tower, aufwuch flora on inserts, water flows through packing layer
Time, water directly contacts biological flora surface with biological flora, and pollutant are captured by biological flora viable bacteria body；Through in biological bacteria
The internal compound transforming into harmless odorless；And from biological flora surface desorption, enter in water together with part biological flora,
Water is made to be purified recycling.General bioanalysis directly processes toxic harmful exhaust gas, there is waste gas and enters biomass tower, raw
The gas-liquid mass transfer efficiency of thing bacterium tower is low, there is commercial plant volume relatively big, and the gas purification time is slow, vulnerable to pollution load and
The impact of the change of component, unsteady drying and ambient temperature.And waste gas does not enter biological tower in the present invention, biological bacteria
The impact of activity not subject plasma reactor 3, and the water after biological flora biochemical treatment is made again through cyclic water tank 7
Absorbent for Pneumatic emulsifying tower recycles, it is possible to as the make-up water of biological tower 5 spray liquid, it is achieved recycling of water
Do not produce secondary pollution.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (8)
1. a poisonous and harmful dusty gas controlled depth purifier, it is characterised in that include plasma reactor, gas
Dynamic emulsification tower, biological tower and water circulation system, the gas outlet, upper end of plasma reactor connects pneumatic breast by gas pipeline
Change the air inlet of tower, the lower section common recycle water tank of Pneumatic emulsifying tower and biological tower；Pneumatic emulsifying tower is contained within dehydration demister；
Water circulation system is that the water of cyclic water tank returns to cyclic water tank after water pump is respectively by Pneumatic emulsifying tower, biological tower, circulation
Use.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 1, it is characterised in that plasma
The lower section of reactor according is provided with air inlet, and air inlet is sequentially connected with blower fan by gas pipeline.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 1, it is characterised in that plasma
Reactor according is connected with high voltage power supply.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 1, it is characterised in that pneumatic breast
Arranging the absorbent containing biological flora in changing tower, biological flora includes bacillus, bacteriophage and bacterium nitrobacter.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 4, it is characterised in that absorbent
For water or the water containing biological inoculum.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 1, it is characterised in that biological tower
Inside having biological flora to cultivate and repair packing layer, filler is made up of material of making pottery, biomass fiber, is distributed in tower.
Poisonous and harmful dusty gas controlled depth purifier the most according to claim 1, it is characterised in that biological tower
In be provided with biological flora, biological flora includes bacillus, bacteriophage and bacterium nitrobacter.
8. a poisonous and harmful dusty gas controlled depth purification method, it is characterised in that comprise the following steps:
1) poisonous and harmful dusty gas enters in plasma reactor through blower fan, and utilize in plasma reactor is big
Amount active particle carries out direct preliminary exposition removal to poisonous and harmful dusty gas, and complicated, to be insoluble in water macromole is had
Poison harmful substance is decomposed into simple small-molecule substance, and makes the pollutant in gas change into hydroaropic substance；
2) the waste gas entrance Pneumatic emulsifying tower after plasma reactor processes carries out gas-liquid mixed emulsifying, the dirt in gas
Dye thing is by liquid phase adsorption separation, and gas is purified gas through dehydrator dehydrating demisting again, purifies gas and is discharged to atmospheric environment；
Waste water produced by gas-liquid emulsifying purification process is decomposed by the biological bacteria in tower in water pipe enters biological tower, by dirty in water
Dye thing be degraded into harmless odorless material, through biological tower process after water through cyclic water tank again as the absorbent of Pneumatic emulsifying tower
Recycle, also serve as the make-up water of biological tower spray liquid, it is achieved recycling of water simultaneously.
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Application publication date: 20161012 |