CN206027426U - Biological deodorization system - Google Patents
Biological deodorization system Download PDFInfo
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- CN206027426U CN206027426U CN201620917363.6U CN201620917363U CN206027426U CN 206027426 U CN206027426 U CN 206027426U CN 201620917363 U CN201620917363 U CN 201620917363U CN 206027426 U CN206027426 U CN 206027426U
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- biological deodorizing
- water tank
- pipeline
- liquid level
- cyclic water
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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
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a biological deodorization system, include: biological deodorization equipment, biological deodorization equipment includes biological deodorization tower, spray pump, liquid pipeline unit, circulation tank and the control unit, the supreme humidification spray zone who divide into gas distribution water returning area, biofilm carrier district and install a plurality of nozzles is down followed to the biological deodorization tower, and liquid pipeline unit includes spray piping and return water pipe, each nozzle is connected to spray pump one end through the spray piping, and the spray pump other end is connected to circulation tank, and return water pipe one end is connected to gas distribution water returning area, the other end is connected to circulation tank, and the control unit is connected with the spray pump electricity. Through above -mentioned embodiment, can circulating intermittent type ground not carry out the humidification to the biological deodorization tower and spray, and can automize and go on regularly, the operation environmental protection is high -efficient.
Description
Technical field
This utility model is related to the technical field of foul waste gas process, more particularly to a kind of circulating intermittent shower biology is removed
Smelly system.
Background technology
Biological deodorizing is one of mainstream technology of current foul waste gas process field, with simple to operate, high treating effect,
Non-secondary pollution, it is easy to the advantage of maintenance.The know-why of biological deodorizing is to carry out biological drop using microorganism to foul waste gas
Solution process, makes polluter be converted into CO2、H2The odorless such as O and inorganic salt or low sordes matter.Due to micro- life of foul waste gas of degrading
The habitat of thing growth needs certain condition, therefore biological deodorizing system is carried out adding frequently with spray mode intermittently or serially
Wet shot drenches, and the ejecting liquid for humidifying spray has circulation and do not circulate two types.But existing biological deodorizing system is deposited
In following technical problem：
1) circulated sprinkling does not carry out the biological deodorizing system of disposable spray using fresh ejecting liquid, exists larger
Water consume and medicine consumption；
2) biological deodorizing system of circulated sprinkling lacks the regulatory mechanism to growth of microorganism environment, and biological deodorizing system is easy
There is metabolic waste accumulation, the situation that odor removal efficient declines；
3) biological deodorizing system of circulated sprinkling needs manually periodically to change ejecting liquid, and operation management is relatively multiple
It is miscellaneous.
Utility model content
This utility model provides a kind of biological deodorizing system for solving above-mentioned technical problem, being capable of circulating opposite off and on
Thing deodorizing tower carries out humidification spray, and can automatization regularly carry out, run environment-friendly high-efficiency.
For solving above-mentioned technical problem, this utility model provides a kind of biological deodorizing system, including：Biological deodorizing device；
The biological deodorizing device includes biological deodorizing tower, feeding spraying pump, fluid pipeline unit, cyclic water tank and control unit；Institute
State biological deodorizing tower to be divided into gas distribution backwater zone, biologic packing material area from bottom to up and the humidification spraying zone of multiple nozzles is installed,
The fluid pipeline unit includes spray piping and water return pipeline；Each nozzle is connected to the spray by the spray piping
Sprinkling pump one end, the feeding spraying pump other end are connected to the cyclic water tank, and described water return pipeline one end is connected to the cloth
Gas backwater zone, the other end are connected to the cyclic water tank, and described control unit is electrically connected with the feeding spraying pump.
Further, the biological deodorizing system includes collection and confinement of gases airduct, deodorization air exhauster and gas discharge airduct,
The collection and confinement of gases airduct is connected to the gas distribution backwater zone, the deodorization convulsion mechatronics institute through the deodorization air exhauster
State control unit and controlled by described control unit, the gas discharge airduct is at the top of the humidification spraying zone.
Further, the fluid pipeline unit includes moisturizing pipeline and drainage pipeline, and the moisturizing pipeline is located at described
Be connected at the top of cyclic water tank and with moisturizing pipe network, the drainage pipeline be located at the cyclic water tank bottom and with drainage pipeline networks phase
Even.
Further, electromagnetic valve, each electromagnetic valve point are respectively arranged with the moisturizing pipeline and the drainage pipeline
Do not electrically connect with described control unit.
Further, hand stop valve is respectively arranged with the moisturizing pipeline and the drainage pipeline.
Further, y-type filter is provided with the drainage pipeline.
Further, y-type filter is provided between the feeding spraying pump and the cyclic water tank.
Further, the box house of the cyclic water tank or outside are provided with for the pH to the ejecting liquid water quality
The pH value in-line meter that the change of value is monitored, the pH value in-line meter are electrically connected with described control unit.
Further, the cyclic water tank is provided with highest Liquid level point, middle Liquid level point and minimum liquid level control
Processed, the highest Liquid level point, the middle Liquid level point and the minimum liquid level control point are respectively arranged with one
Individual liquid level sensor, each liquid level sensor are electrically connected with described control unit respectively.
Further, the cyclic water tank cope level is less than the low journey of the biological deodorizing tower bottom.
Biological deodorizing system of the present utility model：By nozzle is arranged at biological deodorizing top of tower, nozzle is by spray
Pipeline Jing feeding spraying pumps are connected with cyclic water tank, and connect biological deodorizing tower bottom and recirculated water respectively using water return pipeline two ends
Case, and then a water circulation is built into, circulating humidification spray can be carried out to biological deodorizing tower using ejecting liquid off and on；
In addition, control unit is electrically connected with feeding spraying pump, can automatization humidification spray is carried out to biological deodorizing tower regularly,
Whole service process environment-friendly high-efficiency, can regulate and control long-term effectively to growth of microorganism environment in biological deodorizing tower.
Description of the drawings
Fig. 1 is the structural representation of this utility model biological deodorizing system.
Fig. 2 is the flow chart of this utility model biological deodorizing system control method.
Specific embodiment
This utility model is described in detail with embodiment below in conjunction with the accompanying drawings.
Refer to Fig. 1, circulating intermittent shower biological deodorizing system of the present utility model, including：Biological deodorizing device, gas
Body collects airduct 1, deodorization air exhauster 2 and gas discharge airduct 4.
The biological deodorizing device includes biological deodorizing tower 3, feeding spraying pump 5, fluid pipeline unit, cyclic water tank 6 and control
Unit processed 7, specifically, biological deodorizing tower 3 is divided into gas distribution backwater zone 31, biologic packing material area 32 from bottom to up and is provided with multiple
The humidification spraying zone 33 of nozzle 330, fluid pipeline unit include spray piping 8 and water return pipeline 9.Wherein, each nozzle 330 passes through
Spray piping 8 is connected to 5 one end of feeding spraying pump, and 5 other end of feeding spraying pump is connected to cyclic water tank 6, the connection of 9 one end of water return pipeline
Cyclic water tank 6 is connected to the gas distribution backwater zone 31, other end, control unit 7 is electrically connected with feeding spraying pump 5.
Further, collection and confinement of gases airduct 1 is connected to gas distribution backwater zone 31 through deodorization air exhauster 2, and deodorization air exhauster 2 is electric
Connect control unit 7 and controlled unit 7 is controlled, gas discharge airduct 4 is at the top of humidification spraying zone 33.
Further, fluid pipeline unit also includes moisturizing pipeline 10 and drainage pipeline 11, and moisturizing pipeline 10 is located at and follows
It is connected at the top of ring water tank 6 and with moisturizing pipe network, drainage pipeline 11 is located at 6 bottom of cyclic water tank and is connected with drainage pipeline networks.
In a specific embodiment, moisturizing pipeline 10 is provided with moisturizing electromagnetic valve 12, the moisturizing electromagnetic valve 12 and control
Unit 7 is electrically connected and is opened and closed under control of the control unit 7；Drain solenoid valve 13 also is provided with drainage pipeline 11, the draining electricity
Magnet valve 13 is equally electrically connected with control unit 7 and is opened and closed under control of the control unit 7.It is of course also possible to individually in filling pipe
Hand stop valve is set on road 10, and hand stop valve is set on drainage pipeline 11 individually.Preferably, can on moisturizing pipeline 10
Moisturizing electromagnetic valve 12 and hand stop valve be simultaneously set, and drain solenoid valve 13 and manually also can be set on drainage pipeline 11 simultaneously
Stop valve, so, in Practical Project, can be opened by corresponding hand stop valve in each electromagnetic valve failure or when changing manually
Stopped pipe road.
In other embodiments, it is also possible to install on spray piping 8 and water return pipeline 9 and electrically connect with control unit 7
Electromagnetic valve and/or hand stop valve opening and closing pipeline.
Biological deodorizing system of the present utility model：By nozzle 330 is arranged at the top of biological deodorizing tower 3, nozzle 330 leads to
Cross 8 Jing feeding spraying pumps 5 of spray piping to be connected with cyclic water tank 6, and connect biological deodorizing tower 3 respectively using 9 two ends of water return pipeline
Bottom and cyclic water tank 6, and then a water circulation is built into, can be circulating off and on using ejecting liquid to biological deodorizing tower
3 carry out humidification spray；In addition, control unit 7 is electrically connected with feeding spraying pump 5, can automatization regularly biology is removed
Smelly tower 3 carries out humidification spray, and whole service process environment-friendly high-efficiency can have for a long time to growth of microorganism environment in biological deodorizing tower 3
The regulation and control of effect ground.
When the biological deodorizing system works, the foul waste gas from odor source are trapped by collection and confinement of gases airduct 11 first,
Then pumping to biological deodorizing device via deodorization air exhauster 22 carries out biodegradation process, and final process gas up to standard is by gas
Body discharge airduct 44 is discharged.Specifically, foul waste gas enter gas distribution backwater zone 31 from 33 bottom of biological deodorizing tower, and fill out in biology
Material area 32 is degraded by microorganisms and is converted into CO2、H2The odorless such as O and inorganic salt or low sordes matter, period humidify spraying zone 33 to circulate
The spray mode of formula interval carries out humidification spray to biological packing area 32, to maintain humidity suitable in biologic packing material area 32, and
The nutrient substance rinsed needed for the metabolite or supplementary growth of microorganism of microbial degradation process generation.
6 cope level of cyclic water tank is less than 33 Bottom Altitude of biological deodorizing tower, is beneficial to ejecting liquid etc. and is back to circulation
Water tank 6, specifically, cyclic water tank 6 can be integrally buried or be installed in 33 bottom of biological deodorizing tower, when cyclic water tank 6 install in
During 33 bottom of biological deodorizing tower, the gas distribution backwater zone 31 of biological deodorizing tower 33 can be merged with cyclic water tank 6.
Ejecting liquid is stored with cyclic water tank 6, when biological deodorizing tower 33 starts circulating intermittent shower, feeding spraying pump 5
The nozzle 330 that spraying zone 33 is arranged will be humidified by spray piping 8 in ejecting liquid pressurized delivered to biological deodorizing tower 33, right
After biologic packing material area 32 carries out humidification spray and carry partial exfoliation microbial film, metabolite and using nutrient substance spray
Drench liquid to be fallen after rise to gas distribution backwater zone 31 under gravity, and cyclic water tank 6 is flow to certainly by water return pipeline 9.
In a specific embodiment, cyclic water tank 6 sets highest Liquid level point, middle Liquid level point and minimum liquid level
Control point, three Liquid level points are respectively arranged with a liquid level sensor 14 (Fig. 1 is only illustrated at), each liquid level sensor 14
Electrically connect with control unit 7 respectively.
In addition, cyclic water tank 6 is additionally provided with pH in-line meters 15, the pH value in-line meter 15 is for cyclic water tank 6
The change of the pH value of ejecting liquid water quality is monitored.
Liquid level sensor 14 and pH in-line meters 15 are with 4-20mA electric signal outputs, 6 liquid level of cyclic water tank and water pH value
Change can be converted into the signal of telecommunication and transmit to control unit 7.
Control unit 7 possesses plc data processing system, can be arranged by the plc data processing system in control unit 7 and be followed
In ring water tank 6, ejecting liquid changes the 33 intermittent shower time of pH value and biological deodorizing tower.
Plc data processing system in control unit 7 is according to each liquid level sensor 14 in cyclic water tank 6 and pH in-line meters
The numerical value of 15 transmission is compared with the artificial setting value of system, it is determined whether need to carry out more the ejecting liquid of cyclic water tank 6
Change or moisturizing, and realize circulating intermittent shower biological deodorizing system automatic operating.
In above-mentioned embodiment, control unit 7 can select electric autocontrol cabinet.
Y-type filter 161 is provided with drainage pipeline 11, is provided with the filtration of Y types between feeding spraying pump 5 and cyclic water tank 6
Device 162.Mechanical mill is caused to feeding spraying pump 5 and drain solenoid valve 13 with the debris for preventing 6 ejecting liquid entrained with of cyclic water tank
Damage or element blocking.
As shown in Fig. 2 Fig. 2 is the flow chart of the circulating intermittent shower biological deodorizing system control method of this utility model.
The control method specifically includes following steps：
Step S1, arranges 6 ejecting liquid of cyclic water tank by the plc data processing system in control unit 7 and changes pH value
And the intermittent shower time.
Step S2, is monitored to ejecting liquid water quality by pH in-line meters 15.
Step S3, judges whether the pH value of ejecting liquid water quality exceedes and changes pH value.When ejecting liquid pH is sprayed more than arranging
When drenching liquid replacing pH value, into step S4.When ejecting liquid pH is less than or equal to ejecting liquid replacing pH value is arranged, into step
Rapid S20.
Step S4, circulating intermittent shower biological deodorizing system enter normal mode.In the normal mode, deodorization air exhauster
2 open, and drain solenoid valve 13 is closed.
Whether step S5, judge 6 liquid level of cyclic water tank less than middle Liquid level point.Liquid level is by corresponding level sensing
Device 14 is obtained, and to avoid biological deodorizing system in the normal mode, occurs that backwater is choked water or water evaporation causes causing recirculated water
Situations such as 6 water shortage of case, evacuation of feeding spraying pump 5.If liquid level is less than middle Liquid level point, into step S6；No person, still
Normally can use, you can continue humidification spray.
Step S6, moisturizing electromagnetic valve 12 are opened and carry out moisturizing.
Step S7, judges whether 6 liquid level of cyclic water tank is recovered to highest order Liquid level point.If it is, entering step S8；
No person, proceeds step S6.
Step S8, moisturizing electromagnetic valve 12 are closed.Now, moisturizing terminates.
With the operation simultaneously of step S5, also step S9.
Whether step S9, judge 6 liquid level of cyclic water tank less than middle Liquid level point.If it is, entering step S10；It is no
Person, into step S15.
Step S10, circulating intermittent shower biological deodorizing system enter low liquid level protected mode.
Step S11, under low liquid level protected mode, feeding spraying pump 5 is closed.That is 3 circulating intermittent shower of biological deodorizing tower
Close.
Step S12, moisturizing electromagnetic valve 12 are opened.Now, pass through moisturizing pipeline from the fresh ejecting liquid of moisturizing pipe network
10 are supplemented to cyclic water tank 6.
Step S13, judges whether 6 liquid level of cyclic water tank is recovered to highest order Liquid level point.If it is, entering step
S14；No person, proceeds step S12.
Step S14, moisturizing electromagnetic valve 12 are closed.I.e. when 6 liquid level of cyclic water tank rises to highest Liquid level point, moisturizing
Electromagnetic valve 12 cuts out, system recovery to normal mode, in other words, reenters step S4.
Step S15, proceeds circulating intermittent shower.
Whether step S16, judge system operation time in setting spray time.If it is, entering step S17；It is no
Person, into step S19.
Step S17, feeding spraying pump start.
Step S18, biological deodorizing tower carry out humidification spray.That is ejecting liquid pressurized delivered is removed by sprinkling pump 5 to biology
Smelly tower 3 carries out humidification spray.
Step S19, feeding spraying pump are closed.After exceeding setting spray time, feeding spraying pump 5 is closed and enters next interval
Spray loop cycle, that is, reenter step S15.
Step S20, circulating intermittent shower biological deodorizing system enter more complementary modulus formula.Under replacing pattern, feeding spraying pump 5
And deodorization air exhauster 2 is closed.
Step S21, drain solenoid valve 13 are opened.Will 6 ejecting liquid of cyclic water tank sewage is drained into by drainage pipeline 11
Pipe network.
Step S22, judges whether 6 liquid level of cyclic water tank drops to minimum liquid level control point.If it is, entering step S23；
No person, into step S21.
Step S23, drain solenoid valve 13 are closed.
Step S24, moisturizing electromagnetic valve 12 are opened.Mended by moisturizing pipeline 10 from the fresh ejecting liquid of moisturizing pipe network
It is charged to cyclic water tank 6.
Step S25, judges whether 6 liquid level of cyclic water tank is recovered to highest Liquid level point.If it is, entering step S26；
No person, into step S24.
Step S26, moisturizing electromagnetic valve 12 are closed.Moisturizing electromagnetic valve 12 cuts out, and system recovery is reentered to normal mode
Step S3.
<Embodiment 1>
The foul waste gas with hydrogen sulfide as main component are processed in a sewage lifting pump station, in the present embodiment system circulation
It is pH value≤2.5 that 6 ejecting liquid of water tank changes the arranges value of pH value, ejecting liquid water quality is supervised by pH in-line meters 15
Survey, when ejecting liquid pH≤2.5, circulating intermittent shower biological deodorizing system enters more complementary modulus formula.
<Embodiment 2>
In foul waste gas of the extensive use of chemical fertilizer factory processes with ammonia as main component, system circulation water tank in the present embodiment
It is pH value≤6.5 that 6 ejecting liquids change the arranges value of pH value, ejecting liquid water quality is monitored by pH in-line meters 15,
When ejecting liquid pH≤6.5, circulating intermittent shower biological deodorizing system enters more complementary modulus formula.
In sum, by arranging and being existed by the moisturizing electromagnetic valve 12, drain solenoid valve 13, pH value that control unit 7 is controlled
The parts such as line instrument 15, liquid level sensor 16, can according to the pH value and liquid level of ejecting liquid in cyclic water tank 6 in real time,
Automatically and humidification spray is intelligently carried out to biological deodorizing tower 3, and carry out under proper condition supplementing ejecting liquid and replacing
Ejecting liquid.Which does not need manual intervention, and operation is simple, efficient, environmental protection.
Embodiment of the present utility model is these are only, the scope of the claims of the present utility model, every profit is not thereby limited
The equivalent structure made with this utility model description and accompanying drawing content or equivalent flow conversion, or directly or indirectly it is used in which
The technical field of his correlation, is included in scope of patent protection of the present utility model in the same manner.
Claims (10)
1. a kind of biological deodorizing system, it is characterised in that include：
Biological deodorizing device；
The biological deodorizing device includes that biological deodorizing tower, feeding spraying pump, fluid pipeline unit, cyclic water tank and control are single
Unit；
The biological deodorizing tower is divided into gas distribution backwater zone, biologic packing material area from bottom to up and is provided with the humidification spray of multiple nozzles
Area is drenched, the fluid pipeline unit includes spray piping and water return pipeline；
Each nozzle is connected to described feeding spraying pump one end by the spray piping, and the feeding spraying pump other end is connected to
The cyclic water tank, described water return pipeline one end are connected to the gas distribution backwater zone, the other end and are connected to the cyclic water tank, institute
State control unit to electrically connect with the feeding spraying pump.
2. biological deodorizing system according to claim 1, it is characterised in that：
The biological deodorizing system includes collection and confinement of gases airduct, deodorization air exhauster and gas discharge airduct, the collection and confinement of gases
Airduct is connected to the gas distribution backwater zone through the deodorization air exhauster, and the deodorization convulsion mechatronics described control unit is simultaneously
By described control unit control, the gas discharge airduct is at the top of the humidification spraying zone.
3. biological deodorizing system according to claim 1, it is characterised in that：
The fluid pipeline unit includes moisturizing pipeline and drainage pipeline, and the moisturizing pipeline is located at the top of the cyclic water tank simultaneously
It is connected with moisturizing pipe network, the drainage pipeline is located at the cyclic water tank bottom and is connected with drainage pipeline networks.
4. biological deodorizing system according to claim 3, it is characterised in that：
Electromagnetic valve is respectively arranged with the moisturizing pipeline and the drainage pipeline, and each electromagnetic valve is single with the control respectively
Unit's electrical connection.
5. biological deodorizing system according to claim 3, it is characterised in that：
Hand stop valve is respectively arranged with the moisturizing pipeline and the drainage pipeline.
6. biological deodorizing system according to claim 3, it is characterised in that：
Y-type filter is provided with the drainage pipeline.
7. biological deodorizing system according to claim 1, it is characterised in that：
Y-type filter is provided between the feeding spraying pump and the cyclic water tank.
8. biological deodorizing system according to claim 1, it is characterised in that：
The box house of the cyclic water tank or outside are provided with for carrying out to the change of the pH value of the ejecting liquid water quality
The pH value in-line meter of monitoring, the pH value in-line meter are electrically connected with described control unit.
9. biological deodorizing system according to claim 1, it is characterised in that：
The cyclic water tank is provided with highest Liquid level point, middle Liquid level point and minimum liquid level control point, the highest
Liquid level point, the middle Liquid level point and the minimum liquid level control point are respectively arranged with a liquid level sensor,
Each liquid level sensor is electrically connected with described control unit respectively.
10. biological deodorizing system according to claim 1, it is characterised in that：
The cyclic water tank cope level is less than the low journey of the biological deodorizing tower bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620917363.6U CN206027426U (en) | 2016-08-22 | 2016-08-22 | Biological deodorization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620917363.6U CN206027426U (en) | 2016-08-22 | 2016-08-22 | Biological deodorization system |
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| Publication Number | Publication Date |
|---|---|
| CN206027426U true CN206027426U (en) | 2017-03-22 |
Family
ID=58305669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620917363.6U Active CN206027426U (en) | 2016-08-22 | 2016-08-22 | Biological deodorization system |
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| CN (1) | CN206027426U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702109A (en) * | 2017-10-18 | 2018-02-16 | 杜鹏伟 | The off-gas cleaning equipment of incinerator |
| CN109876645A (en) * | 2019-03-31 | 2019-06-14 | 叶耀 | A kind of biological deodorizing device of the anti-depths anoxic corruption of the warm and humid profit of discontinuous |
| CN110327736A (en) * | 2019-05-14 | 2019-10-15 | 北京戴纳实验科技有限公司 | A kind of laboratory exhaust gas composite absorption adsorptive purifier |
| CN111346500A (en) * | 2020-03-12 | 2020-06-30 | 广东瑞境能源环保科技有限公司 | Novel ultrasonic biological deodorizer |
-
2016
- 2016-08-22 CN CN201620917363.6U patent/CN206027426U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702109A (en) * | 2017-10-18 | 2018-02-16 | 杜鹏伟 | The off-gas cleaning equipment of incinerator |
| CN107702109B (en) * | 2017-10-18 | 2019-05-21 | 江苏金秋环保科技有限公司 | The off-gas cleaning equipment of incinerator |
| CN109876645A (en) * | 2019-03-31 | 2019-06-14 | 叶耀 | A kind of biological deodorizing device of the anti-depths anoxic corruption of the warm and humid profit of discontinuous |
| CN110327736A (en) * | 2019-05-14 | 2019-10-15 | 北京戴纳实验科技有限公司 | A kind of laboratory exhaust gas composite absorption adsorptive purifier |
| CN111346500A (en) * | 2020-03-12 | 2020-06-30 | 广东瑞境能源环保科技有限公司 | Novel ultrasonic biological deodorizer |
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