CN208678796U - The bio-trickling filter of dioxin in a kind of removal flue gas - Google Patents
The bio-trickling filter of dioxin in a kind of removal flue gas Download PDFInfo
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- CN208678796U CN208678796U CN201820653687.2U CN201820653687U CN208678796U CN 208678796 U CN208678796 U CN 208678796U CN 201820653687 U CN201820653687 U CN 201820653687U CN 208678796 U CN208678796 U CN 208678796U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model discloses a kind of bio-trickling filter for removing dioxin in flue gas, including tower body, gas inlet is set on tower body side wall, exhanst gas outlet is arranged in top, in the tower body and it is located at below smoke inlet for circulating water pool, the first packing layer and the second packing layer are set gradually from the bottom to top above smoke inlet, setting is connected to the sprayer of circulating water pool by water circulating pump above second packing layer, at least a pair of horizontally disposed cathode electrode and anode electrode are equipped in second packing layer, cathode electrode is located at lower section under anode electrode in each pair of electrode, cathode electrode and the external constant-current supply of anode electrode.The utility model carries out fume treatment for distributing garbage incinerating system, has significant removal effect for dioxin.
Description
Technical field
The utility model belongs to fume treatment field, and spy is for cigarette caused by distributing residents in rural community burning facility
A kind of gas, and in particular to method and bio-trickling filter for removing dioxin in flue gas.
Background technique
With the raising of environmental requirement, the processing of residents in rural community has become the most important thing, but since rural area occupies
Residence dispersion, it is difficult to realize that rubbish focuses on.Therefore distributing garbage incinerating system is that rural garbage processing is existing optimal
Selection, but the flue gas of waste incineration generation becomes the main bottleneck of the technology.Dioxin is the master in flue gas of refuse burning
Pollutant is wanted, dioxin is often referred to the plane arene compounds that there is the chlorine more than one group of similar structure and physicochemical property to replace,
Belong to the oxygen-containing thrcylic aromatic hydrocarbon class compound of chloro.Dioxin has hypertoxicity and strong carcinogenicity, can be with severe jamming human endocrine
System.Furthermore dioxin has very excellent fat-soluble, easily accumulates in inside of human body especially fat deposit.Based on this, open
Send out a kind of processing flue gas in dioxin technology it is too impatient to wait.
Bulky refuse burns enterprise and uses 900 DEG C of dual firing chamber or more high-temperature process substantially at present, Technical investment energy consumption is big,
Technical requirements are high, are not particularly suited for distributing residents in rural community.It is de- that patent 201611109756.5 discloses a kind of dioxin
Except system, which includes that quenching column, Venturi scrubber and activated carbon adsorber remove dioxin jointly, which declares pair
There is high removal rate in dioxin, but its system only shifts pollutant, does not eliminate harm thoroughly；Patent
201710440123.0 disclose the removal methods and device of dioxin in a kind of high-temperature flue gas, which only passes through ultraviolet light pair
Dioxin is removed, and dioxin removal efficiency is bad.
Utility model content
The utility model provides a kind of method and bio-trickling filter for removing dioxin in flue gas, burns for distributing rubbish
It burns equipment and carries out fume treatment, there is significant removal effect for dioxin.
Gas inlet, top is arranged on tower body side wall in the bio-trickling filter of dioxin in a kind of removal flue gas, including tower body
Exhanst gas outlet is set, in the tower body and be located at be below smoke inlet circulating water pool, above smoke inlet from the bottom to top successively
First packing layer and the second packing layer are set, and setting is connected to being sprayed for circulating water pool by water circulating pump above the second packing layer
Device, the second packing layer is interior to be equipped at least a pair of horizontally disposed cathode electrode and anode electrode, cathode electrode position in each pair of electrode
Lower section, cathode electrode and the external constant-current supply of anode electrode under anode electrode.
Flue gas squeezes into drop filter tower by vortex fan, and recirculated water sprays down at the top of drop filter tower；In flue gas uphill process
Collided first with the first packing layer, major part volatile organic matter therein, nitrogen oxides, sulfur dioxide be transferred into filler and
Water phase is removed by microbial action；Flue gas continues to rise, and collides with the second packing layer, and the dioxin in flue gas is by the
Adsorbent absorption in two packing layers；At least a pair of horizontally disposed anode electrode and cathode electrode are equipped in second packing layer,
Cathode electrode and the external constant-current supply of anode electrode, wherein cathode electrode is located at below anode electrode in each pair of electrode, cathode electricity
Pole reduction consumption oxygen, builds the second packing layer inner cathode electrode anaerobic environment nearby, while stimulating cathode microbial reduction de-
Halogen ability, thus the dioxin contamination object in the second packing layer of removal；Purifying smoke is by discharge at the top of drop filter tower.
Preferably, the height of the drop filter tower is flue gas flow Q/ (300~600).
Preferably, the height of first packing layer is 0.5~1.5m, and the first packing layer is by polyurethane, haydite, organic
The packing layer that fiber, volcano be molten, one or more of ceramics are constituted.
Preferably, the height of second packing layer is 0.1~0.5m, and second packing layer is filling out for active carbon composition
The bed of material.
The material that filler needs large specific surface area, bio-compatibility good in first packing layer, preferably polyurethane, have haydite
Machine fiber, volcano be molten, one or more of ceramics.Consider to be more preferably that volcano is molten from price angle；Second packing layer
Middle filler must have electric conductivity, and have excellent adsorption capacity for dioxin.Filler is preferably activated carbon.
The biomembrane composition electrode of anode electrode and cathode electrode, active carbon and its surface is configured in the second packing layer
Between solid state resistance, it is preferable that the electrode is to being set as 1~5 pair.
It is further preferred that the spacing of cathode electrode and anode electrode is 0.3~0.5 meter in each pair of electrode；Adjacent electrode
Spacing between is 0.3~0.5 meter.Spacing is too short to will lead to adsorption layer deficiency, and spacing is too long to will increase the interior of electrolysis system
Energy consumption is hindered, excessive energy waste is caused.
Preferably, all cathode electrodes and anode electrode are tabular titanium net electrode, and titanium net hole is 4 mesh~20 mesh.
It is further preferred that titanium net hole is 10 mesh.
The handling principle of the utility model is as follows: flue gas enters drop filter tower from lower part, and the volatility in flue gas first is organic
Object and nitrogen oxides etc. are transferred into lower layer's filler and water phase, are removed by aerobic microbiological metabolism, since dioxin is
A kind of pollutant for being difficult to be dissolved in water body, therefore most of dioxin is still as flue gas rises, when flue gas enters upper layer
When active carbon filler, dioxin is easily by active carbon adsorption.
The first step of dioxin degradation is exactly dehalogenation, and the utility model will be with dehalogenation ability
The strains such as Dehalococcoides sp.Strain CBDB1 are added in active carbon filler, are disliked using this microorganism by two
English dehalogenation.In addition, electro-chemical systems are added in drop filter tower by the utility model, pass through the oxygen in cathodic process consumed cabin air
So that the environment of the more anaerobism of construction one, is suitble to micro-reduction dehalogenation, then cathode current has microorganism pierce simultaneously
Swash effect, ATP enzyme, the activity of antioxidase, dehydrogenase of enhancement microbiological, to accelerate the dehalogenation rate of microorganism.To protect
The residence time for demonstrate,proving flue gas is sufficient, and drop filter tower must possess enough height, preferably, drop filter tower height is flue gas flow Q/
(300~600m3/ h), height is too short to will lead to that drop filter tower sectional area is excessive but depth is insufficient, reduces touching for flue gas and filler
Probability to be hit, is also also easy to produce more reaction dead zone, height is too long to be will lead to reaction and takes up space excessive, space waste is caused,
The power that vortex fan need to be increased causes energy waste.
Cathode bioelectrochemistry is a kind of efficient dehalogenation technology, and cathode can accelerate halogenated hydrocarbons dehalogenation mistake at three aspects
Journey, 1) cathode reduction itself can largely consume oxygen, to build an anaerobism packing layer environment；2) cathodic reduction pair
Dioxin has reduction, Direct Electrochemistry dehalogenation；3) cathodic reduction can stimulate the enrichment of dehalogenation microorganism to increase.As
It is preferred that the voltage for being applied to two electrode of packing layer is 3~5V.
Compared with prior art, the utility model has the following beneficial effects:
(1) utility model device carries out fume treatment for distributing garbage incinerating system, has for dioxin aobvious
The removal effect of work；
(2) the utility model occupied area it is small, without any manual maintenance, it is easy to operate, energy consumption it is lower；
(3) secondary pollution that the utility model generates is few, will not generate any secondary pollution.
Detailed description of the invention
Fig. 1 is utility model device structural schematic diagram.
1 constant-current supply, 2 vortex fan, 3 water circulating pump
4 first packing layer, 5 cathode electrode, 6 second packing layer
7 anode electrode, 8 sprayer, 9 tower body
Specific embodiment
As shown in Figure 1, a kind of bio-trickling filter, including tower body 9, smoke inlet is opened up on tower body side wall, smoke inlet connects
Connect vortex fan 2, exhanst gas outlet is located at the top of tower body, and in tower body and to be located at be circulating water pool below smoke inlet, in tower body and
Set gradually the first packing layer 4 and the second packing layer 6 from the bottom to top above smoke inlet, setting spray above the second packing layer
Day with fog 8, sprayer are connected to the circulating water pool of bottom in tower body by water circulating pump 3.
The filler of first packing layer is from polyurethane, haydite, organic fiber, volcano are molten, it is one or more to select in ceramics
Combination, the Fillers selection active carbon of the second packing layer.
At least a pair of (being arranged in present embodiment a pair of) electrode is set in the second packing layer, and electrode includes cathode electrode 5
With anode electrode 7, cathode electrode and anode electrode are horizontally disposed, are located on the second packing layer cross section, cathode electrode is located at
Below anode electrode, the spacing between cathode electrode and anode electrode is 0.3~0.5 meter, outside cathode electrode 5 and anode electrode 7
Connect constant-current supply 1.
The process for handling flue gas by the bio-trickling filter is as follows:
1) flue gas squeezes into drop filter tower by vortex fan；
2) in flue gas uphill process first with packing layer 1 collide, it is therein major part volatile organic matter, nitrogen oxides,
Sulfur dioxide is transferred into filler and water phase, is removed by microbial action；
3) flue gas continues to rise, and collides with packing layer 2, and dioxin is adsorbed by the adsorbent in packing layer 2 in flue gas；
4) the cathode electrode reduction consumption oxygen in packing layer 2, builds 2 lower anaerobic environment of packing layer, while can stimulate
Cathode microbial reductive dehalogenation ability, to remove the dioxin contamination object in packing layer 2.
Embodiment 1
It is 4m for a treating capacity3The distributing refuse treatment plant of/d, smoke yields are about 1500m3/ d,
The dioxin concentration of air inlet is about 1.5~6.0mg/m3。
It is cylindrical to drip filter tower shape, is highly 3 meters, diameter of section is 1.0 meters, and the first packing layer filler uses 8 lis of φ
The polyurethane filler of rice suspension ball package, polyurethane diameter are 2*2 centimetres, and packed height is 0.8 meter, and the second packing layer is activity
Charcoal, active carbon particle diameter are 0.5~1.0 meter, and packed height is 0.3 meter., the application voltage of electrode is in the second packing layer
4V。
After fume treatment auxiliary processing, exiting flue gas dioxin index such as table 1 reaches emission request.
Table 1
| Minute (h) | Measured value (mg/m3) |
| 2 | 0.075 |
| 4 | 0.11 |
| 6 | 0.025 |
| 8 | 0.061 |
Embodiment 2
With the equipment of embodiment 1, voltage parameter is respectively modified as 3V and 5V, and result is as shown in table 2 below:
Table 2
| Voltage | Measured value (mg/m3) |
| 3V | 0.073 |
| 5V | 0.021 |
Embodiment 3
It is 2m for a treating capacity3The distributing refuse treatment plant of/d, smoke yields are about 800m3/ d, into
The dioxin concentration of gas is about 1.5~6.0mg/m3。
It is cylindrical to drip filter tower shape, is highly 2.5 meters, diameter of section is 0.8 meter, and the first packing layer filler uses φ 8
The polyurethane filler of centimetre suspension ball package, polyurethane diameter are 2*2 centimetres, and packed height is 0.6 meter, and the second packing layer is to live
Property charcoal, active carbon particle diameter be 0.5~1.0 meter, packed height be 0.2 meter., the application voltage of electrode is in the second packing layer
4V。
After fume treatment auxiliary processing, exiting flue gas dioxin index such as table 3 reaches emission request.
Table 3
| Minute (h) | Measured value (mg/m3) |
| 4 | 0.092 |
| 8 | 0.053 |
The foregoing is merely the specific implementation cases of the utility model patent, but the technical characteristic of the utility model patent is simultaneously
Not limited to this, in the field of the utility model, made changes or modifications all cover any those skilled in the relevant art
Among the scope of the patents of the utility model.
Claims (8)
1. the bio-trickling filter of dioxin in a kind of removal flue gas, gas inlet is arranged on tower body side wall in including tower body, top is set
Set exhanst gas outlet, which is characterized in that in the tower body and be located at below smoke inlet for circulating water pool, smoke inlet top under
It is supreme to set gradually the first packing layer and the second packing layer, it is arranged above the second packing layer and circulating water pool is connected to by water circulating pump
Sprayer, at least a pair of horizontally disposed cathode electrode and anode electrode, cathode in each pair of electrode are equipped in the second packing layer
Electrode is located at below anode electrode, cathode electrode and the external constant-current supply of anode electrode.
2. bio-trickling filter according to claim 1, which is characterized in that the height of the drop filter tower is flue gas flow Q/ (300
~600).
3. bio-trickling filter according to claim 1, which is characterized in that the height of first packing layer is 0.5~1.5m,
First packing layer be by polyurethane, the packing layer that haydite, organic fiber, volcano be molten, one or more of ceramics are constituted.
4. bio-trickling filter according to claim 1, which is characterized in that the height of second packing layer is 0.1~0.5m,
Second packing layer is the packing layer that active carbon is constituted.
5. bio-trickling filter according to claim 1, which is characterized in that the electrode is to being set as 1~5 pair.
6. bio-trickling filter according to claim 1, which is characterized in that in each pair of electrode between cathode electrode and anode electrode
Away from being 0.3~0.5 meter；Spacing between adjacent electrode pair is 0.3~0.5 meter.
7. bio-trickling filter according to claim 1, which is characterized in that all cathode electrodes and anode electrode are tabular
Titanium net electrode, titanium net hole are 4 mesh~20 mesh.
8. bio-trickling filter according to claim 7, which is characterized in that titanium net hole is 10 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653687.2U CN208678796U (en) | 2018-05-03 | 2018-05-03 | The bio-trickling filter of dioxin in a kind of removal flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653687.2U CN208678796U (en) | 2018-05-03 | 2018-05-03 | The bio-trickling filter of dioxin in a kind of removal flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN208678796U true CN208678796U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820653687.2U Active CN208678796U (en) | 2018-05-03 | 2018-05-03 | The bio-trickling filter of dioxin in a kind of removal flue gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543415A (en) * | 2018-05-03 | 2018-09-18 | 浙江利欧环保科技有限公司 | A kind of method and bio-trickling filter of removal dioxin in flue gas |
| CN110559841A (en) * | 2019-09-29 | 2019-12-13 | 天津大学 | Electrochemistry improved biological filter tower purification device and application thereof |
-
2018
- 2018-05-03 CN CN201820653687.2U patent/CN208678796U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543415A (en) * | 2018-05-03 | 2018-09-18 | 浙江利欧环保科技有限公司 | A kind of method and bio-trickling filter of removal dioxin in flue gas |
| CN110559841A (en) * | 2019-09-29 | 2019-12-13 | 天津大学 | Electrochemistry improved biological filter tower purification device and application thereof |
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